Execution Copy






                                2,500,000 Shares

                          UNIVERSAL DISPLAY CORPORATION


                             Shares of Common Stock
                                ($.01 par value)

                             underwriting agreement

                                                                  March 17, 2004


SG COWEN SECURITIES CORPORATION
NEEDHAM & COMPANY, INC.
HARRIS NESBITT CORP.
   As Representatives of the several Underwriters
c/o SG Cowen Securities Corporation
1221 Avenue of the Americas
New York, New York 10020

Dear Sirs:

1. Introductory. UNIVERSAL DISPLAY CORPORATION, a Pennsylvania corporation (the
"Company") proposes to sell, pursuant to the terms of this Agreement, to the
several underwriters named in Schedule A hereto (the "Underwriters," or, each,
an "Underwriter"), an aggregate of 2,500,000 shares of Common Stock, $.01 par
value (the "Common Stock"), of the Company. The aggregate of 2,500,000 shares so
proposed to be sold is hereinafter referred to as the "Firm Stock." The Company
also proposes to sell to the Underwriters, upon the terms and conditions set
forth in Section 3 hereof, up to an additional 375,000 shares of Common Stock
(the "Optional Stock"). The Firm Stock and the Optional Stock are hereinafter
collectively referred to as the "Stock." SG Cowen Securities Corporation ("SG
Cowen"), Needham & Company, Inc. and Harris Nesbitt Corp. are acting as
representatives of the several Underwriters and in such capacity are hereinafter
referred to as the "Representatives." Certain terms used herein are defined in
Section 14 hereof.

2. REPRESENTATIONS AND WARRANTIES OF THE COMPANY AND ITS SUBSIDIARY. The Company
and its subsidiary represent and warrant to, and agree with, the several
Underwriters that:

         (a) The Company has prepared and filed, in accordance with the
         provisions of the Securities Act of 1933, as amended (the "Securities
         Act"), and the rules and regulations promulgated thereunder (the "Rules
         and Regulations"), with the Securities and Exchange Commission (the
         "Commission") a registration statement on Form S-3 (File No. 333-88950)
         under the Securities Act (the "First Registration Statement") in
         respect of $50,000,000 of Common Stock, preferred stock, warrants and
         depositary shares, including the Stock. The First Registration
         Statement has been declared by the Commission to be effective under the
         Securities Act. The Company has also prepared and filed with the
         Commission, in accordance with the provisions of the Securities Act, a
         registration statement on Form S-3 (File No. 333-112077) under the



         Securities Act (the "Second Registration Statement") in respect of
         $50,000,000 of Common Stock, preferred stock, warrants and depositary
         shares, including the Stock. Amendments to the Second Registration
         Statement have been similarly prepared and filed with the Commission.
         The Second Registration Statement, as so amended, has been declared by
         the Commission to be effective under the Securities Act. Pursuant to
         Rule 429 under the Securities Act, the Second Registration Statement
         constitutes a post-effective amendment to the First Registration
         Statement and includes a combined prospectus relating to any offering
         of securities of the Company under both the First Registration
         Statement and the Second Registration Statement. The First Registration
         Statement, at the time it became effective and as supplemented or
         amended, or deemed to have been amended pursuant to Rule 429 under the
         Securities Act prior to the execution of this Agreement, and the Second
         Registration Statement, at the time it became effective and as
         supplemented or amended prior to the execution of this Agreement, in
         each case including (i) all financial schedules and exhibits thereto
         and (ii) all documents incorporated by reference or deemed to be
         incorporated by reference therein, are hereinafter referred to
         individually as a "Registration Statement" and collectively as the
         "Registration Statements." Except for documents incorporated by
         reference therein, the Preliminary Supplement (as defined below) and
         the Final Supplement (as defined below), no other document relating to
         the Second Registration Statement or document incorporated by reference
         therein has been filed with the Commission since effectiveness. No stop
         order suspending the effectiveness of any Registration Statement or any
         post-effective amendment thereto, if any, has been issued and no
         proceeding for that purpose has been initiated or, to the Company's
         knowledge, threatened by the Commission. The term "Base Prospectus" as
         used in this Agreement means the information contained in the
         prospectus contained in the Second Registration Statement at the time
         such part of the Second Registration Statement became effective. The
         term "Preliminary Supplement" as used in this Agreement means the
         preliminary prospectus supplement to the Base Prospectus filed with the
         Commission pursuant to Rule 424(b) of the Rules and Regulations. The
         term "Final Supplement" as used in this Agreement means the final
         prospectus supplement to the Base Prospectus relating to the sale of
         the Stock, in the form filed pursuant to Rule 424(b) under the
         Securities Act. The Final Supplement together with the Base Prospectus,
         is hereinafter collectively referred to as the "Prospectus". Any
         reference herein to any Preliminary Supplement or the Prospectus shall
         be deemed to refer to and include the documents incorporated by
         reference therein pursuant to Item 12 of Form S-3 under the Securities
         Act, as of the date of such Preliminary Supplement or Prospectus, as
         the case may be. Any reference to any amendment or supplement to any
         Preliminary Supplement or the Prospectus shall be deemed to refer to
         and include any documents filed after the date of such Preliminary
         Supplement or Prospectus, as the case may be, under the Securities
         Exchange Act of 1934, as amended (the "Exchange Act"), and incorporated
         by reference in such Preliminary Supplement or Prospectus, as the case
         may be; and any reference to any amendment to any Registration
         Statement shall be deemed to refer to and include any annual report of
         the Company filed pursuant to Section 13(a) or 15(d) of the Exchange
         Act after the effective date of such Registration Statement that is
         incorporated by reference in such Registration Statement. No document
         has been or will be prepared or distributed in reliance on Rule 434
         under the Securities Act. No order preventing or suspending the use of
         any Preliminary Supplement has been issued by the Commission.

                                       2


         (b) Each Registration Statement conforms (and the Prospectus and any
         amendments or supplements to the Registration Statements or the
         Prospectus, when they become effective or are filed with the
         Commission, as the case may be, will conform) in all material respects
         to the requirements of the Securities Act and the Rules and Regulations
         and do not and will not, as of the applicable effective date (as to the
         Registration Statements and any amendments thereto) and as of the
         applicable filing date (as to the Prospectus and any amendment or
         supplement thereto) contain any untrue statement of a material fact or
         omit to state any material fact required to be stated therein or
         necessary to make the statements therein (in the case of the
         Prospectus, in light of the circumstances under which they were made)
         not misleading; provided, however, that the foregoing representations
         and warranties shall not apply to information contained in or omitted
         from any Registration Statement or the Prospectus or any such amendment
         or supplement thereto in reliance upon, and in conformity with, written
         information furnished to the Company through the Representatives by or
         on behalf of any Underwriter specifically for inclusion therein, which
         information the parties hereto agree is limited to the Underwriter's
         Information (as defined in Section 16).

         (c) The documents incorporated by reference in the Registration
         Statements and the Prospectus, at the time they became effective or
         were filed with the Commission, as the case may be, conformed in all
         material respects to the requirements of the Securities Act or the
         Exchange Act, as applicable, and the rules and regulations of the
         Commission thereunder, and none of such documents when they were filed
         with the Commission contained any untrue statement of a material fact
         or omitted to state any material fact required to be stated therein or
         necessary to make the statements therein, in light of the circumstances
         under which they were made, not misleading; and any further documents
         so filed and incorporated by reference in the Prospectus, at the time
         such documents are filed with Commission, will conform in all material
         respects to the requirements of the Securities Act or the Exchange Act,
         as applicable, and the applicable rules and regulations of the
         Commission thereunder and will not contain any untrue statement of a
         material fact or omit to state any material fact required to be stated
         therein or necessary to make the statements therein, in light of the
         circumstances under which they were made, not misleading.

         (d) The Company and its subsidiary have been duly organized and are
         validly existing as corporations or other legal entities in good
         standing (or the equivalent thereof, if any) under the laws of their
         respective jurisdictions of incorporation, are duly qualified to do
         business and are in good standing (or the equivalent thereof, if any)
         as foreign corporations in each jurisdiction in which their respective
         ownership or lease of property or the conduct of their respective
         businesses requires such qualification, and have all power and
         authority necessary to own or hold their respective properties and to
         conduct the businesses in which they are engaged, except where the
         failure to be so qualified and in good standing or have such power or
         authority would not have, singularly or in the aggregate, a "Material
         Adverse Effect." Material Adverse Effect means an event or condition
         which would have a material adverse effect on the condition (financial
         or otherwise), results of operations, business, properties or prospects
         of the Company and its subsidiary taken as a whole. The Company owns or
         controls, directly or indirectly, only the following corporations,
         partnerships, limited liability partnerships, limited liability
         companies, associations or other entities: UDC, Inc.

         (e) The Stock to be issued and sold by the Company to the Underwriters
         hereunder has been duly and validly authorized and, when issued and


                                       3


         delivered against payment therefor as provided herein, will be duly and
         validly issued, fully paid and non-assessable and free of any
         preemptive or similar rights (except those that have been waived by the
         holder thereof) and will conform to the description thereof contained
         in the Prospectus.

         (f) The Company has an authorized capitalization as set forth in the
         Prospectus, all of the issued and outstanding shares of capital stock
         of the Company have been duly and validly authorized and issued, are
         fully paid and non-assessable, have been issued in compliance with
         Federal and state securities laws and conform to the description
         thereof contained in the Prospectus. None of the outstanding shares of
         Common Stock was issued in violation of any preemptive rights, rights
         of first refusal or other similar rights to subscribe for or purchase
         securities of the Company (except those that have been waived by the
         holder thereof). There are no authorized or outstanding options,
         warrants, preemptive rights, rights of first refusal or other rights to
         purchase, or equity or debt securities convertible into or exchangeable
         or exercisable for, any capital stock of the Company or any of its
         subsidiaries other than those set forth in the Prospectus. The
         description of the Company's stock option, stock bonus and other stock
         plans or arrangements, and the options or other rights granted
         thereunder, as described in the Prospectus accurately and fairly
         presents the information required to be shown with respect to such
         plans, arrangements, options and rights.

         (g) All the outstanding shares of capital stock of the subsidiary of
         the Company have been duly authorized and validly issued, are fully
         paid and non-assessable and, except to the extent set forth in the
         Prospectus, are owned directly by the Company, free and clear of any
         claim, lien, encumbrance, security interest, restriction upon voting or
         transfer or any other claim of any third party.

         (h) The Company has the full right, power and authority to enter into
         this Agreement and to perform and to discharge its obligations
         hereunder and this Agreement has been duly authorized, executed and
         delivered by the Company, and constitutes a valid and binding
         obligation of the Company enforceable in accordance with its terms,
         except as enforceability may be limited to bankruptcy, insolvency,
         reorganization, moratorium or similar laws affecting creditors' rights
         generally, and by general principles, and except to the extent that the
         indemnification and contribution provisions of Section 7 hereof may be
         limited by federal or state securities laws and public policy
         considerations in respect thereof.

         (i) The execution, delivery and performance of this Agreement by the
         Company and the consummation of the transactions contemplated hereby
         will not conflict with or result in a breach or violation of any of the
         terms or provisions of, or constitute a default under, any indenture,
         mortgage, deed of trust, loan agreement or other agreement or
         instrument to which the Company or its subsidiary is a party or by
         which the Company or its subsidiary is bound or to which any of the
         property or assets of the Company or its subsidiary is subject, except
         for such breach, violation or default which would not reasonably be
         likely to have a Material Adverse Effect, nor will such actions result
         in any violation of the provisions of the charter or by-laws of the
         Company or its subsidiary or any material violation of any statute,
         law, rule or regulation or any judgment, order or decree of any court
         or governmental agency or body having jurisdiction over the Company or
         its subsidiary or any of their properties or assets.

         (j) There is no franchise, lease, contract, or agreement or other
         document of a character required by the Securities Act or the Rules and


                                       4


         Regulations to be described in the Prospectus, or to be filed as an
         exhibit to any Registration Statement, which is not described or filed
         as required; and all statements summarizing any such franchises,
         contracts, leases, instruments or other documents or legal matters
         contained in the Registration Statements are accurate and complete in
         all material respects. Other than as described in the Prospectus, no
         such franchise, lease, contract or agreement has been suspended or
         terminated for convenience or default by the Company or any of the
         other parties thereto, and the Company has not received notice or any
         other knowledge of any such pending or threatened suspension or
         termination, except for such pending or threatened suspensions or
         terminations that would not reasonably be expected to, singularly or in
         the aggregate, have a Material Adverse Effect.

         (k) All existing minute books of the Company and its subsidiary,
         including all existing records of all meetings and actions of the board
         of directors (including, Audit and Compensation Committees) and
         stockholders of the Company through the date of the latest meeting and
         action (collectively, the "Corporate Records") have been made available
         to the Underwriters and counsel for the Underwriters. All such
         Corporate Records are complete and accurately reflect, in all material
         respects, all transactions referred to in such Corporate Records. There
         are no material transactions, agreements or other actions that have
         been consummated by the Company that are not properly approved and/or
         recorded in the Corporate Records.

         (l) No consent, approval, authorization, filing with or order of or
         registration with, any court or governmental agency or body is required
         in connection with the transactions contemplated herein, except such as
         have been obtained or made under the Securities Act or the Exchange
         Act, the rules of the Nasdaq National Market (the "Nasdaq"), the rules
         of the Philadelphia Stock Exchange, and by the Corporate Financing
         Department of the National Association of Securities Dealers, Inc. (the
         "NASD"), and such as may be required under the securities, or blue sky,
         laws of any jurisdiction in connection with the purchase and
         distribution of the Stock by the Underwriters in the manner
         contemplated herein and in the Prospectus.

         (m) Except as described in the Prospectus, no person or entity has the
         right to require registration of shares of Common Stock or other
         securities of the Company because of the filing or effectiveness of any
         Registration Statement or otherwise, except for persons and entities
         who have expressly waived such right or who have been given timely and
         proper notice and have failed to exercise such right within the time or
         times required under the terms and conditions of such right, and except
         as described in the Prospectus and pursuant to the terms of warrants to
         purchase Common Stock issued to SG Cowen in connection with its acting
         as placement agent in the Company's August 2003 registered direct
         offering, the Company is not required under the terms and conditions of
         any existing agreement to which the Company is a party or otherwise
         bound to file any registration statement for the registration of any
         securities of any person or register any such securities pursuant to
         any other registration statement filed by the Company under the
         Securities Act for a period of at least 180 days after the date hereof.
         Each director and executive officer of the Company and each stockholder
         of the Company listed on Schedule B hereto has delivered to the
         Representatives an enforceable written lock-up agreement in the form
         attached to this Agreement as Exhibit I.

         (n) The consolidated financial statements with the related notes and
         schedules thereto, included or incorporated by reference in the
         Registration Statements and Prospectus present fairly the financial


                                       5


         condition, results of operations and cash flows of the Company as of
         the dates and for the periods indicated, comply as to form with the
         applicable accounting requirements of the Securities Act and have been
         prepared in conformity with accounting principles generally accepted in
         the United States of America, consistently applied throughout the
         periods involved. The summary and selected financial data included in
         the Prospectus present fairly the information shown therein as at the
         respective dates and for the respective periods specified and have been
         presented on a basis consistent with the consolidated financial
         statements set forth in the Prospectus and other financial information
         except for the absence of footnotes and normal year-end adjustments for
         unaudited consolidated financial statements. The consolidated financial
         statements, together with the related notes and schedules, included or
         incorporated by reference in the Prospectus comply in all material
         respects with the Securities Act and the Rules and Regulations
         thereunder. No other financial statements or supporting schedules or
         exhibits are required by the Securities Act or the Rules and
         Regulations thereunder to be included or incorporated by reference in
         the Prospectus.

         (o) Except as set forth in the Prospectus, there is no legal or
         governmental proceeding pending to which the Company or its subsidiary
         is a party or of which any property or assets of the Company or its
         subsidiary is the subject which is required to be described in any
         Registration Statement or the Prospectus and is not described therein,
         or which, singularly or in the aggregate, if determined adversely to
         the Company or its subsidiary would be likely to have a Material
         Adverse Effect or would prevent or adversely affect the ability of the
         Company to perform its obligations under this Agreement; and to the
         Company's knowledge, no such proceedings are threatened or contemplated
         by governmental authorities and no such proceedings with a reasonable
         probability of assertion have been or threatened by others.

         (p) The Company and its subsidiary have good and marketable title in
         fee simple to, or have valid rights to lease or otherwise use, all
         items of real or personal property which are material to the business
         of the Company and its subsidiary taken as a whole, in each case, free
         and clear of all liens, encumbrances, claims and defects that would be
         likely to result in a Material Adverse Effect.

         (q) Neither the Company nor its subsidiary is (i) in violation of any
         provision of its charter or bylaws, (ii) is in default in any respect,
         and no event has occurred which, with notice or lapse of time or both,
         would constitute such a default, in the due performance or observance
         of any term, covenant, or condition contained in any indenture,
         contract, lease, mortgage, deed of trust, note agreement, loan
         agreement or other agreement, obligation, condition, covenant or
         instrument to which it is a party or by which it is bound or to which
         any of its property or assets is subject, or (iii) is in violation in
         any respect of any statute, law, rule, regulation, ordinance, judgment,
         order or decree of any court, regulatory body, administrative agency,
         governmental body, arbitrator or other authority having jurisdiction
         over the Company, its subsidiary or any of its properties, as
         applicable except, with respect to clauses (ii) and (iii), any
         violations or defaults which, singularly or in the aggregate, would not
         have a Material Adverse Effect or which are disclosed in the
         Prospectus.

         (r) Except as described in the Prospectus, the contracts described in
         the Company's periodic reports on Form 10-K and 10-Q, and its current
         reports on Form 8-K as filed by the Company with the Commission or
         incorporated by reference therein that are material to the Company are
         in full force and effect on the date hereof (except as to such
         contracts that may have expired by their own terms), and neither the


                                       6


         Company nor, to the Company's knowledge, any other party to such
         contracts is in breach of or default under any of such contracts which
         would have a Material Adverse Effect.

         (s) No labor problem or dispute with the employees of the Company
         exists or, to the Company's knowledge, is threatened or imminent, which
         would be likely to have a Material Adverse Effect. The Company is not
         aware that any key employee or significant group of employees of the
         Company or any subsidiary plans to terminate employment with the
         Company or any such subsidiary.


         (t) Each of the Company and its subsidiary has fulfilled its
         obligations, if any, under the minimum funding standards of Section 302
         of the United States Employee Retirement Income Security Act of 1974
         ("ERISA") and the regulations and published interpretations thereunder
         with respect to each "plan" (as defined in Section 3(3) of ERISA and
         such regulations and published interpretations) in which employees of
         the Company and its subsidiary are eligible to participate and each
         such plan is in compliance in all material respects with the presently
         applicable provisions of ERISA and such regulations and published
         interpretations. No "prohibited transaction" (as defined in Section 406
         of ERISA, or Section 4975 of the Internal Revenue Code of 1986, as
         amended from time to time (the "Code")) has occurred with respect to
         any employee benefit plan which would be likely to have a Material
         Adverse Effect. Neither the Company nor its subsidiary has incurred any
         unpaid liability to the Pension Benefit Guaranty Corporation (other
         than for the payment of premiums in the ordinary course) or to any such
         plan under Title IV of ERISA. Each "pension plan" (as defined in ERISA)
         for which the Company would have any liability that is intended to be
         qualified under Section 401(a) of the Code is so qualified in all
         material respects and nothing has occurred, whether by action or by
         failure to act, which could cause the loss of such qualification.

         (u) The Company and its subsidiary are insured by insurers of
         recognized financial responsibility against such losses and risks and
         in such amounts as the Company reasonably believes are prudent and
         customary in the businesses in which they are engaged; all policies of
         insurance and fidelity or surety bonds insuring the Company and its
         subsidiary and their businesses, assets, employees, officers and
         directors are in full force and effect; the Company and its subsidiary
         are in compliance with the terms of such policies and instruments in
         all material respects; and there are no claims by the Company or its
         subsidiary under any such policy or instrument as to which any
         insurance company is denying liability or defending under a reservation
         of rights clause; neither the Company nor its subsidiary has been
         refused any insurance coverage sought or applied for; and neither the
         Company nor its subsidiary has any reason to believe that it will not
         be able to renew its existing insurance coverage as and when such
         coverage expires or to obtain similar coverage from similar insurers as
         may be necessary to continue its business at a cost that would not have
         a Material Adverse Effect, except as set forth in the Prospectus.

         (v) Each of the Company and its subsidiary has made all filings,
         applications and submissions required by, and possesses all approvals,
         licenses, certificates, certifications, notifications, orders, permits
         and other authorizations required to be issued by, the appropriate
         federal, state or foreign regulatory authorities in order for the
         Company and its subsidiary to conduct their businesses (collectively,
         "Permits"), except for such Permits which the failure to obtain would


                                       7


         not have a Material Adverse Effect, and is in compliance in all
         material respects with the terms and conditions of all such Permits;
         all of such Permits held by the Company and its subsidiary are valid
         and in full force and effect; there is no pending or, to the Company's
         knowledge, threatened action, suit, claim or proceeding which may cause
         any such Permit to be limited, revoked, cancelled, suspended, modified
         or not renewed and neither the Company nor its subsidiary has received
         any notice of proceedings relating to the limitation, revocation,
         cancellation, suspension, modification or non-renewal of any such
         Permit which, singly or in the aggregate, if the subject of an
         unfavorable decision, ruling or finding, would have a Material Adverse
         Effect, whether or not arising from transactions in the ordinary course
         of business, except as set forth in or contemplated by the Prospectus.

         (w) KPMG LLP, who have audited certain consolidated financial
         statements of the Company and delivered their report with respect to
         the audited consolidated financial statements and schedules included in
         the Prospectus or the Registration Statements or incorporated by
         reference therein, are and during the periods covered by their reports,
         were independent public accountants with respect to the Company within
         the meaning of the Securities Act and the Rules and Regulations.

         (x) The Company and its subsidiary have filed all foreign, federal,
         state and local tax returns that are required to be filed or have
         requested extensions thereof (except in any case in which the failure
         so to file would not have a Material Adverse Effect, except as set
         forth in the Prospectus) and has paid all taxes required to be paid by
         it and any other assessment, fine or penalty levied against it, to the
         extent that any of the foregoing is due and payable, except for any
         such assessment, fine or penalty that is currently being contested in
         good faith or as would not have a Material Adverse Effect, except as
         set forth in the Prospectus.

         (y) The Company is in compliance in all material respects with all
         applicable provisions of the Sarbanes-Oxley Act of 2002 and all rules
         and regulations promulgated thereunder or implementing the provisions
         thereof (the "Sarbanes-Oxley Act") that are then in effect and is
         taking all reasonable actions required to ensure that it will be in
         compliance, in all material respects, with other applicable provisions
         of the Sarbanes-Oxley Act not currently in effect in accordance with
         the time periods for compliance as provided therein.

         (z) The Company and its subsidiary maintain a system of internal
         accounting controls that the Company reasonably believes are sufficient
         to provide reasonable assurances that (i) transactions are executed in
         accordance with management's general or specific authorizations; (ii)
         transactions are recorded as necessary to permit preparation of
         financial statements in conformity with accounting principles generally
         accepted in the United States of America and to maintain accountability
         of assets; (iii) access to assets is permitted only in accordance with
         management's general or specific authorization; and (iv) the recorded
         accountability for assets is compared with the existing assets at
         reasonable intervals and appropriate action is taken with respect to
         any differences.

         (aa) Neither the Company nor its subsidiary nor any of their officers,
         directors or, to the Company's knowledge, any of their affiliates (as
         such term is defined in Rule 405 under the Securities Act) has taken,
         directly or indirectly, any action designed or intended to stabilize or
         manipulate the price of any security of the Company, or which caused or
         resulted in, stabilization or manipulation of the price of any security
         of the Company.

                                       8


         (bb) Each of the Company and its subsidiary (i) is in compliance in all
         material respects with any and all applicable foreign, federal, state
         and local laws and regulations relating to the protection of human
         health and safety, the environment or hazardous or toxic substances or
         wastes, pollutants or contaminants ("Environmental Laws"), (ii) has
         received and is in compliance in all material respects with all
         permits, licenses or other approvals required of it under applicable
         Environmental Laws to conduct its business and (iii) has not received
         notice of any actual or potential liability for the investigation or
         remediation of any disposal or release of hazardous or toxic substances
         or wastes, pollutants or contaminants, except where such non-compliance
         with Environmental Laws, failure to receive required permits, licenses
         or other approvals, or liability would not, individually or in the
         aggregate, have a Material Adverse Effect, whether or not arising from
         transactions in the ordinary course of business, except as set forth in
         or contemplated by the Prospectus. The Company has not been named as a
         "potentially responsible party" under the Comprehensive Environmental
         Response, Compensation, and Liability Act of 1980, as amended.

         (cc) To the extent appropriate in the ordinary course of its business,
         the Company periodically reviews the effect of Environmental Laws on
         the business, operations and properties of the Company and its
         subsidiary, in the course of which it identifies and evaluates
         associated costs and liabilities (including, without limitation, any
         capital or operating expenditures required for clean-up, closure of
         properties or compliance with Environmental Laws, or any permit,
         license or approval, any related constraints on operating activities
         and any potential liabilities to third parties). On the basis of such
         review, the Company has reasonably concluded that such associated costs
         and liabilities would not, singly or in the aggregate, have a Material
         Adverse Effect, whether or not arising from transactions in the
         ordinary course of business, except as set forth in or contemplated by
         the Prospectus.

         (dd) The Company and its subsidiary own, possess, license or have other
         rights to use all foreign and domestic patents, patent applications,
         trade and service marks, trade and service mark registrations, trade
         names, copyrights, licenses, inventions, trade secrets, technology,
         Internet domain names, know-how and other intellectual property
         (collectively, the "Intellectual Property") material to the conduct of
         the Company's business as now conducted or as proposed in the
         Prospectus to be conducted. Except as set forth in the Prospectus, (a)
         there are no rights of third parties to any such Intellectual Property;
         (b) to the Company's knowledge, there is no infringement by third
         parties of any such Intellectual Property; (c) there is no pending
         action, suit, proceeding or claim by others challenging the Company's
         and its subsidiary's rights in or to any such Intellectual Property, to
         the Company's knowledge, no such claims which, singularly or in the
         aggregate, if determined adversely to the Company or its subsidiary
         would be likely to have a Material Adverse Effect or would prevent or
         adversely affect the ability of the Company to perform its obligations
         under this Agreement, and which have a reasonable probability of
         assertion, have been threatened by others, and the Company is unaware
         of any facts which would form a reasonable basis for any such claim,
         except, in the case of patents and trademarks, for such facts as have
         been disclosed to the appropriate patent or trademark offices; (d)
         there is no pending action, suit, proceeding or claim by others
         challenging the validity or scope of any such Intellectual Property
         and, to the Company's knowledge, no such claims which, singularly or in
         the aggregate, if determined adversely to the Company or its subsidiary
         would be likely to have a Material Adverse Effect or would prevent or
         adversely affect the ability of the Company to perform its obligations
         under this Agreement, and which have a reasonable probability of


                                       9


         assertion, have been threatened by others; (e) there is no pending or,
         to the Company's knowledge, threatened action, suit, proceeding or
         claim by others that the Company and/or its subsidiary infringe or
         otherwise violate any patent, trademark, copyright, trade secret or
         other proprietary rights of others, and the Company is unaware of any
         other fact which would form a reasonable basis for any such claim; (f)
         to the Company's knowledge, there is no third-party U.S. patent or
         published U.S. patent application which contains claims for which an
         Interference Proceeding could be commenced against any patent or patent
         application described in the Prospectus as being owned by or licensed
         to the Company which proceeding, if determined adversely to the Company
         or its subsidiary, would be likely to have a Material Adverse Effect or
         would prevent or adversely affect the ability of the Company to perform
         its obligations under this Agreement; and (g) the Company and its
         subsidiary have taken all steps reasonably determined by the Company to
         be necessary to perfect its ownership of the Intellectual Property.

         (ee) The Company has established and administers compliance practices
         applicable to the Company, to assist the Company and the directors,
         officers and employees of the Company in complying with applicable
         regulatory guidelines (which, for the purposes of this Section 2(ee),
         shall not be deemed to include the guidelines of the Commission).

         (ff) Neither the Company nor its subsidiary has failed to file with the
         applicable regulatory authorities any material required filing,
         declaration, listing, registration, report or submission; all such
         filings, declarations, listings, registrations, reports or submissions
         were in compliance in all material respects with applicable laws when
         filed and no deficiencies have been asserted by any applicable
         regulatory authority (which, for the purposes of this Section 2(ff),
         shall not be deemed to include the Commission) with respect to any such
         filings, declarations, listings, registrations, reports or submissions.

         (gg) No relationship, direct or indirect, exists between or among the
         Company on the one hand and the directors, officers, stockholders,
         customers or suppliers of the Company on the other hand which is
         required to be described in the Prospectus and which is not so
         described.

         (hh) Neither the Company nor its subsidiary is or, after giving effect
         to the offering and sale of the Stock and the application of the
         proceeds thereof as described in the Prospectus, will become an
         "investment company" as defined in the Investment Company Act of 1940,
         as amended and the rules and regulations of the Commission thereunder.

         (ii) The Company meets the pre-1992 eligibility requirements for the
         use of a Registration Statement on Form S-3 in connection with the
         offering contemplated thereby and hereby (the pre-1992 eligibility
         requirements for the use of the Registration Statement on Form S-3
         include (i) having a non-affiliate, public common equity float of at
         least $150 million or a non-affiliate, public common equity float of at
         least $100 million and annual trading volume of at least three million
         shares and (ii) having been subject to the Exchange Act reporting
         requirements for a period of 36 months).

         (jj) Neither the Company nor its subsidiary is a party to any contract,
         agreement or understanding with any person (other than this Agreement)
         that would give rise to a valid claim against the Company or the
         Underwriters for a brokerage commission, finder's fee or like payment
         in connection with the offering and sale of the Stock.

                                       10


         (kk) Neither the Company nor its subsidiary has sustained, since the
         date of the latest audited consolidated financial statements included
         in the Prospectus, or the Registration Statements, or incorporated by
         reference therein, any material loss or interference with its business
         from fire, explosion, flood, terrorist act or other calamity, whether
         or not covered by insurance, or from any labor dispute or court or
         governmental action, order or decree, otherwise than as set forth in or
         contemplated by the Prospectus; and, since such date, there has not
         been any change in the capital stock or long-term debt of the Company
         or any Material Adverse Effect, or any development involving a
         prospective Material Adverse Effect, otherwise than as set forth or
         contemplated by the Prospectus.

         (ll) The Stock is duly listed, and admitted and authorized for trading,
         subject to official notice of issuance and evidence of satisfactory
         distribution, on Nasdaq.

         (mm) Neither the Company nor its subsidiary nor, to the best of the
         Company's knowledge, any employee or agent of the Company or its
         subsidiary, has made any contribution or other payment to any official
         of, or candidate for, any federal, state or foreign office in violation
         of any law or of the character required to be disclosed in the
         Prospectus.

         (nn) Each of the Company, and to the Company's knowledge, its directors
         and officers has not distributed and will not distribute prior to the
         later of (i) the First Closing Date, or the final Option Closing Date,
         and (ii) completion of the distribution of the Stock, any offering
         material in connection with the offering and sale of the Stock other
         than any Preliminary Supplement, the Registration Statements, the
         Prospectus and other materials, if any, permitted by the Securities
         Act.

         (oo) The Company has taken all necessary actions to ensure that, upon
         and at all times after Nasdaq shall have approved the Stock for
         inclusion, it will be in compliance in all material respects with all
         applicable corporate governance requirements set forth in the Nasdaq
         Marketplace Rules that are then in effect and is taking all reasonable
         actions required to ensure that it will be in compliance, in all
         material respects, with other applicable corporate governance
         requirements set forth in the Nasdaq Marketplace Rules not currently in
         effect in accordance with the time periods for compliance as provided
         therein.

         (pp) There are no outstanding loans, advances (except normal advances
         for business expense in the ordinary course of business) or guarantees
         or indebtedness by the Company to or for the benefit of any of the
         officers or directors of the Company, except as disclosed in the
         Prospectus.

         Any certificate signed by any officer of the Company and delivered to
the Representatives or counsel for the Underwriters in connection with the
offering of the Stock shall be deemed a representation and warranty by the
Company and its subsidiary, as to the matters covered thereby, to each
Underwriter.

3. PURCHASE, SALE AND DELIVERY OF OFFERED STOCK. On the basis of the
representations, warranties and agreements contained herein, but subject to the
terms and conditions herein set forth, the Company agrees, to sell to each
Underwriter, and each Underwriter agrees, severally and not jointly, to purchase
from the Company that number of shares of Firm Stock (rounded up or down, as
determined by SG Cowen in its discretion, in order to avoid fractions) set forth
opposite the name of such Underwriter in Schedule A hereto.

                                       11


         The purchase price per share to be paid by the Underwriters to the
Company for the Stock will be $11.28 per share (the "Purchase Price").

         The Company will deliver the Firm Stock to the Representatives for the
respective accounts of the several Underwriters (in uncertificated form or in
the form of definitive certificates, issued in such names and in such
denominations as the Representatives may direct by notice in writing to the
Company given at or prior to 12:00 Noon, New York time, on the second full
Business Day preceding the First Closing Date (as defined below)) against
payment of the aggregate Purchase Price therefor by wire transfer to an account
at a bank designated by the Company, payable to the order of the Company. Time
shall be of the essence for the obligations of all parties, and delivery at the
time and place specified pursuant to this Agreement is a further condition of
the obligations of each Underwriter hereunder. The time and date of the delivery
and closing shall be at 10:00 A.M., New York time, on March 23, 2004, in
accordance with Rule 15c6-1 of the Exchange Act. The time and date of such
payment and delivery are herein referred to as the "First Closing Date." The
First Closing Date and the location of delivery of, and the form of payment for,
the Firm Stock may be varied by agreement among the Company and SG Cowen.

         The Company shall make the certificates for the Stock, if any,
available to the Representatives for examination on behalf of the Underwriters
in New York, New York at least twenty four (24) hours prior to the First Closing
Date.

         For the purpose of covering any over-allotments in connection with the
distribution and sale of the Firm Stock as contemplated by the Prospectus, the
Underwriters may purchase all or less than all of the Optional Stock. The price
per share to be paid for the Optional Stock shall be the Purchase Price. The
Company agrees to sell to the Underwriters the number of shares of Optional
Stock specified in the written notice by SG Cowen described below and the
Underwriters agree, severally and not jointly to purchase such shares of
Optional Stock. Such shares of Optional Stock shall be purchased from the
Company for the account of each Underwriter in the same proportion as the number
of shares of Firm Stock set forth opposite such Underwriter's name bears to the
total number of shares of Firm Stock (subject to adjustment by SG Cowen to
eliminate fractions). The option granted hereby may be exercised as to all or
any part of the Optional Stock at any time, and from time to time, not more than
thirty (30) days subsequent to the date of this Agreement. No Optional Stock
shall be sold and delivered unless the Firm Stock previously has been, or
simultaneously is, sold and delivered to and purchased by the Underwriters in
accordance with this Agreement. The right to purchase the Optional Stock or any
portion thereof may be surrendered and terminated at any time upon notice by SG
Cowen to the Company.

         The option granted hereby may be exercised by written notice being
given to the Company by SG Cowen setting forth the number of shares of the
Optional Stock to be purchased by the Underwriters and the date and time for
delivery of and payment for the Optional Stock. Each date and time for delivery
of and payment for the Optional Stock (which may be the First Closing Date, but
not earlier) is herein called the "Option Closing Date" and shall in no event be
earlier than two (2) Business Days nor later than five (5) Business Days after
written notice is given (each Option Closing Date and the First Closing Date are
herein called the "Closing Dates").

         The Company will deliver the Optional Stock to the Underwriters (in
uncertificated form or in the form of definitive certificates, issued in such
names and in such denominations as the Representatives may direct by notice in


                                       12


writing to the Company given at or prior to 12:00 Noon, New York time, on the
second full Business Day preceding each Option Closing Date) against payment of
the aggregate Purchase Price therefor in federal (same day) funds by certified
or official bank check or checks or wire transfer to an account at a bank
designated by the Company payable to the order of the Company. Time shall be of
the essence for the obligations of all parties, and delivery at the time and
place specified pursuant to this Agreement is a further condition of the
obligations of each Underwriter hereunder. Each Option Closing Date and the
location of delivery of, and the form of payment for, the Optional Stock may be
varied by agreement between the Company and SG Cowen.

         The several Underwriters propose to offer the Stock for sale upon the
terms and conditions set forth in the Prospectus.

4. FURTHER AGREEMENTS OF THE COMPANY AND THE UNDERWRITERS. The Company and the
several Underwriters agree that:

         (a) The Company will (i) prepare the Prospectus in a form approved by
         the Representatives and file such Prospectus pursuant to Rule 424(b)
         under the Securities Act not later than the second Business Day
         following the execution and delivery of this Agreement; (ii) make no
         further amendment or supplement prior to the Closing Date to any
         Registration Statement or to the Prospectus to which the
         Representatives shall reasonably object by notice to the Company after
         a reasonable period of time; (iii) for so long as the delivery of a
         prospectus is required in connection with the offering or sale of the
         Stock, advise the Representatives, promptly after it receives notice
         thereof, of the time when any amendment to any Registration Statement
         has been filed or becomes effective or any supplement to the Prospectus
         or any amended Prospectus has been filed and furnish the
         Representatives with copies thereof; (iv) use its best commercially
         practicable efforts to file promptly all reports and any definitive
         proxy or information statements required to be filed by the Company
         with the Commission pursuant to Section 13(a), 13(c), 14 or 15(d) of
         the Exchange Act subsequent to the date of the Final Supplement and for
         so long as the delivery of a prospectus is required in connection with
         the offering or sale of the Stock; (v) for so long as the delivery of a
         prospectus is required in connection with the offering or sale of the
         Stock, advise the Representatives, promptly after it receives notice
         thereof, (1) of any request by the Commission to amend any Registration
         Statement or to amend or supplement the Prospectus or for additional
         information relating thereto, (2) of the issuance by the Commission of
         any stop order suspending the effectiveness of any Registration
         Statement or any post-effective amendment thereto or any order directed
         at any document incorporated by reference or any amendment or
         supplement thereto or any order preventing or suspending the use of the
         Prospectus or any amendment or supplement thereto, (3) of the
         suspension of the qualification of the Stock for offering or sale in
         any jurisdiction, (4) of the institution or threatening of any
         proceeding for any such purpose, or (5) of any request by the
         Commission for the amending or supplementing of any Registration
         Statement or the Prospectus or for additional information relating
         thereto; and, (vi) in the event of the issuance of any stop order or of
         any order preventing or suspending the use of any Preliminary
         Supplement or the Prospectus or suspending any such qualification,
         promptly to use its best commercially practicable efforts to obtain the
         withdrawal of such order.

         (b) If at any time prior to the expiration of nine months after the
         effective date of the Second Registration Statement when a prospectus
         relating to the Stock is required to be delivered, any event occurs as
         a result of which the Prospectus as then amended or supplemented would


                                       13


         include any untrue statement of a material fact, or omit to state any
         material fact necessary to make the statements therein, in light of the
         circumstances under which they were made, not misleading, or if it is
         necessary at any time when a prospectus relating to the Stock is
         required to be delivered, to amend the Prospectus or to file under the
         Exchange Act any document incorporated by reference in the Prospectus
         to comply with the Securities Act or the Exchange Act, the Company will
         promptly notify the Representatives thereof and upon their reasonable
         request will prepare an amended or supplemented Prospectus or make an
         appropriate filing pursuant to Section 13 or 14 of the Exchange Act
         which will correct such statement or omission or effect such
         compliance. The Company will furnish without charge to each Underwriter
         and to any dealer in securities as many copies as the Representatives
         may from time to time reasonably request of such amended or
         supplemented Prospectus; and in case any Underwriter is required to
         deliver a prospectus relating to the Stock nine months or more after
         the effective date of any Registration Statement, the Company upon the
         request of the Representatives and at the expense of such Underwriter
         will prepare promptly an amended or supplemented Prospectus as may be
         necessary to permit compliance with the requirements of Section
         10(a)(3) of the Securities Act.

         (c) The Company will make available promptly upon request to each of
         the Representatives and to counsel for the Underwriters one signed copy
         of each of the Registration Statements as originally filed with the
         Commission, and each amendment thereto filed with the Commission,
         including all consents and exhibits filed therewith.

         (d) The Company will deliver promptly to the Representatives in New
         York City such number of the following documents as the Representatives
         shall reasonably request: (i) conformed copies of the Registration
         Statements, each as originally filed with the Commission and each
         amendment thereto (in each case excluding exhibits), (ii) each
         Preliminary Supplement, (iii) the Prospectus (not later than 10:00
         A.M., New York time, on the second Business Day following the execution
         and delivery of this Agreement) and any amended or supplemented
         Prospectus (not later than 10:00 A.M., New York City time, on the
         Business Day following the date of such amendment or supplement) and
         (iv) any document incorporated by reference in the Prospectus
         (excluding exhibits thereto). Except as contemplated by Section 4(b),
         the Company will pay the expenses of printing or other production of
         all documents relating to the offering.

         (e) To make generally available to its stockholders as soon as
         practicable, but in any event not later than eighteen months after the
         effective date of a Registration Statement (as defined in Rule 158(c)
         under the Securities Act), an earnings statement of the Company (which
         need not be audited) complying with Section 11(a) of the Securities Act
         and the Rules and Regulations (including at the option of the Company,
         Rule 158).

         (f) The Company will promptly take from time to time such actions as
         the Representatives may reasonably request to qualify the Stock for
         offering and sale under the securities, or blue sky, laws of such
         jurisdictions as the Representatives may designate and to continue such
         qualifications in effect for so long as required for the distribution
         of the Stock and will pay the fee, if any, of the NASD in connection
         with its review of the offering; provided that the Company shall not be
         obligated to qualify as a foreign corporation in any jurisdiction in
         which it is not so qualified, submit to taxation in any such
         jurisdiction or file a general consent to service of process in any
         such jurisdiction.

                                       14


         (g) During the period of two years from the date hereof, the Company
         will deliver to the Representatives and, upon request, to each of the
         other Underwriters, (i) as soon as they are available, copies of all
         reports or other communications furnished to stockholders and (ii) as
         soon as they are available, copies of any reports and financial
         statements furnished or filed by the Company with the Commission
         pursuant to the Exchange Act or any national securities exchange or
         automatic quotation system on which the Stock is listed or quoted;
         provided that such reports, communications or financial statements are
         not available to the Representatives on the website of the Commission.

         (h) The Company will not directly or indirectly offer, sell, assign,
         transfer, pledge, contract to sell, or otherwise dispose of any shares
         of Common Stock or securities convertible into or exercisable or
         exchangeable for Common Stock for a period of 90 days from the date of
         the Final Supplement without the prior written consent of SG Cowen,
         other than the Company's sale of the Stock hereunder and the issuance
         of shares pursuant to qualified stock option plans and currently
         outstanding options, warrants or rights, provided, however, that if (i)
         the Company issues an earnings release or material news or a material
         event relating to the Company occurs during the last 17 days of such 90
         day period, or (ii) prior to the expiration of such 90 day period, the
         Company announces that it will release earnings results during the
         16-day period beginning on the last day of such 90 day period, the
         restrictions imposed by this Agreement shall continue to apply until
         the expiration of the 18-day period beginning on the issuance of the
         earnings release or the occurrence of the material news or material
         event. The Company will cause each of its executive officers and
         directors and those stockholders listed in Schedule B hereto to furnish
         to the Representatives, prior to the First Closing Date, a letter,
         substantially in the form of Exhibit I hereto, pursuant to which each
         such person shall agree not to directly or indirectly offer, sell,
         assign, transfer, pledge, contract to sell, or otherwise dispose of any
         shares of Common Stock or securities convertible into or exercisable or
         exchangeable for Common Stock for a period of 90 days from the date of
         the Final Supplement, without the prior written consent of SG Cowen.

         (i) The Company will supply the Representatives with copies of all
         correspondence to and from, and all documents issued to and by, the
         Commission in connection with the registration of the Stock under the
         Securities Act.

         (j) Prior to each of the Closing Dates, the Company will furnish to the
         Representatives, as soon as they have been prepared, copies of any
         unaudited interim consolidated financial statements of the Company for
         any periods subsequent to the periods covered by the consolidated
         financial statements appearing or incorporated by reference in the
         Registration Statements or the Prospectus.

         (k) Prior to the First Closing Date, the Company will not issue any
         press release or other communication directly or indirectly or hold any
         press conference with respect to the Company, its condition, financial
         or otherwise, or earnings, business affairs or business prospects
         (except for routine marketing communications in the ordinary course of
         business and consistent with the past practices of the Company and of
         which the Representatives are notified), without the prior written
         consent of the Representatives, unless in the judgment of the Company
         and its counsel, and after notification to the Representatives, such
         press release or communication is required by law or any rule or
         regulation of the Commission or Nasdaq.

                                       15


         (l) In connection with the offering of the Stock, until SG Cowen shall
         have notified the Company of the completion of the resale of the Stock,
         the Company will not, and will cause its affiliated purchasers (as
         defined in Regulation M under the Exchange Act) not to, either alone or
         with one or more other persons, bid for or purchase, for any account in
         which it or any of its affiliated purchasers has a beneficial interest,
         any Stock, or attempt to induce any person to purchase any Stock; and
         not to, and to cause its affiliated purchasers not to, make bids or
         purchase for the purpose of creating actual, or apparent, active
         trading in or of raising the price of the Stock.

         (m) Unless required by applicable law or any rule or regulation of the
         Commission or Nasdaq, the Company will not take any action prior to the
         First Closing Date which would require the Prospectus to be amended or
         supplemented pursuant to Section 4(b).

         (n) The Company will apply the net proceeds from the sale of the Stock
         as set forth in the Prospectus under the heading "Use of Proceeds."

         (o) Until such time as a prospectus relating to the Stock is no longer
         required to be delivered, the Company shall comply in all material
         respects with all applicable provisions of the Sarbanes-Oxley Act, in
         effect from time to time.

         (p) The Company will engage and maintain, at its expense, a registrar
         and transfer agent for the Stock.

5. PAYMENT OF EXPENSES. The Company agrees with the Underwriters to pay (a) the
costs incident to the authorization, issuance, sale, preparation and delivery of
the Stock and any taxes payable in that connection; (b) the costs incident to
the Registration of the Stock under the Securities Act; (c) the costs incident
to the preparation, printing and distribution of the Registration Statements,
Preliminary Supplement and Prospectus and any amendments and exhibits thereto or
any document incorporated by reference therein, the costs of printing,
reproducing and distributing, the "Agreement Among Underwriters" between the
Representatives and the Underwriters, the Master Selected Dealers' Agreement,
the Underwriters' Questionnaire and this Agreement by mail, telex or other means
of communication; (d) the fees and expenses (including related reasonable fees
and actual out-of-pocket expenses of counsel for the Underwriters) incurred in
connection with filings, if any, made with the NASD; (e) any applicable listing
or other fees; (f) the fees and expenses of qualifying the Stock under the
securities laws of the several jurisdictions as provided in Section 4(f) and of
preparing, printing and distributing Blue Sky Memoranda and Legal Investment
Surveys (including related reasonable fees and actual out-of-pocket expenses of
counsel to the Underwriters); (g) all fees and expenses of the registrar and
transfer agent of the Stock; and (h) all other costs and expenses incident to
the performance of the obligations of the Company under this Agreement
(including, without limitation, the fees and expenses of the Company's counsel
and the Company's independent accountants); provided that, except as otherwise
provided in this Section 5 and in Section 9, the Underwriters shall pay their
own costs and expenses, including the fees and expenses of their counsel, any
transfer taxes on the Stock which they may sell and the expenses of advertising
any offering of the Stock made by the Underwriters.

6. CONDITIONS TO THE OBLIGATIONS OF THE UNDERWRITERS. The respective obligations
of the several Underwriters hereunder are subject to the accuracy, when made and
on each of the Closing Dates, of the representations and warranties of the
Company and its subsidiary contained herein, to the accuracy of the statements
of the Company and its subsidiary made in any certificates pursuant to the


                                       16


provisions hereof, to the performance by the Company and its subsidiary in all
material respects to the extent not otherwise qualified by materiality, and in
all respects to the extent qualified by materiality, of their obligations
hereunder, and to each of the following additional terms and conditions:


         (a) No stop order suspending the effectiveness of any Registration
         Statement shall have been issued and no proceedings for that purpose
         shall have been initiated or threatened by the Commission, and any
         request for additional information on the part of the Commission (to be
         included in any Registration Statement or the Prospectus or otherwise)
         shall have been complied with to the reasonable satisfaction of the
         Representatives. The Prospectus shall have been timely filed with the
         Commission in accordance with Section 4(a).


         (b) None of the Underwriters shall have discovered and disclosed to the
         Company on or prior to the Closing Date that any Registration Statement
         or the Prospectus or any amendment or supplement thereto contains an
         untrue statement of a fact which, in the opinion of counsel for the
         Underwriters, is material or omits to state any fact which, in the
         opinion of such counsel, is material and is required to be stated
         therein or is necessary to make the statements therein not misleading.

         (c) All corporate proceedings and other legal matters incident to the
         authorization, form and validity of each of this Agreement, the Stock,
         the Registration Statements and the Prospectus and all other legal
         matters relating to this Agreement and the transactions contemplated
         hereby shall be reasonably satisfactory in all material respects to
         counsel for the Underwriters and the Company shall have furnished to
         such counsel all documents and information that they may reasonably
         request to enable them to pass upon such matters.

         (d) Morgan, Lewis & Bockius LLP shall have furnished to the
         Representatives, such counsel's written opinion, as counsel for the
         Company, addressed to the Underwriters and dated such Closing Date in
         form and substance reasonably satisfactory to the Representatives, to
         the effect that:

                           (i) the Company and its subsidiary are validly
                  existing as corporations in good standing or subsisting, as
                  the case may be, under the laws of their respective
                  jurisdictions of incorporation, are duly qualified to do
                  business and are in good standing as foreign corporations in
                  the respective jurisdictions listed on Schedule C hereto, and
                  have all power and authority necessary to own or hold their
                  respective properties and to conduct the businesses in which
                  they are engaged as described in the Prospectus, except where
                  the failure to so qualify or have such power or authority
                  would not have, singularly or in the aggregate, a Material
                  Adverse Effect;

                           (ii) the Company has the authorized capitalization as
                  set forth in the Prospectus, and the Stock when issued and
                  delivered to and paid for by the Underwriters as contemplated
                  by this Agreement, will be duly and validly authorized and
                  issued, fully paid and non-assessable and will conform to the
                  description thereof contained in the Prospectus;

                                       17


                           (iii) to the knowledge of such counsel, all the
                  outstanding shares of capital stock of the subsidiary of the
                  Company are, except to the extent set forth in the Prospectus,
                  owned directly by the Company, free and clear of any claim,
                  lien, encumbrance, security interest, restriction upon voting
                  or transfer or any other claim of any third party;

                           (iv) other than such rights as have been waived by
                  the holders thereof, there are no preemptive or other rights
                  to subscribe for or to purchase, nor any restriction upon the
                  voting or transfer of, any shares of the Stock pursuant to the
                  Company's charter or by-laws or any agreement or other
                  instrument known to such counsel;

                           (v) this Agreement has been duly authorized, executed
                  and delivered by the Company;

                           (vi) the execution, delivery and performance of this
                  Agreement by the Company and the consummation by the Company
                  of the transactions contemplated hereby will not conflict in
                  any material respect with or result in a material breach or
                  violation of any of the terms or provisions of, or constitute
                  a default under, any indenture, mortgage, deed of trust, loan
                  agreement or other agreement or instrument filed as an exhibit
                  to any Registration Statement or to any of the documents
                  incorporated by reference therein to which the Company or its
                  subsidiary is a party or by which the Company or its
                  subsidiary is bound or to which any of the property or assets
                  of the Company or its subsidiary is subject, nor will such
                  actions result in any violation of the provisions of the
                  charter or by-laws of the Company or its subsidiary or any
                  statute, law, rule or regulation or, to the knowledge of such
                  counsel, any judgment, order or decree of any court or
                  governmental agency or body having jurisdiction over the
                  Company or its subsidiary or any of their properties or
                  assets;

                           (vii) each Registration Statement was declared
                  effective under the Securities Act as of the date and time
                  specified in such opinion, the Final Supplement was filed with
                  the Commission pursuant to the subparagraph of Rule 424(b) of
                  the Rules and Regulations specified in such opinion on the
                  date specified therein and no stop order suspending the
                  effectiveness of any Registration Statement has been issued
                  and, to the knowledge of such counsel, no proceeding for that
                  purpose is pending or threatened by the Commission;

                           (viii) except for the registration of the Stock under
                  the Securities Act and such consents, approvals,
                  authorizations, registrations or qualifications as may be
                  required under the Exchange Act and applicable state
                  securities laws in connection with the purchase and
                  distribution of the Stock, no consent, approval, authorization
                  or order of, or filing or registration with, any such court or
                  governmental agency or body is required for the execution,
                  delivery and performance of this Agreement by the Company and
                  the consummation by the Company of the transactions
                  contemplated hereby;

                           (ix) to such counsel's knowledge no person or entity
                  has the right to require registration of shares of Common
                  Stock or other securities of the Company because of the filing
                  or effectiveness of any Registration Statement, the completion
                  of the offering or otherwise, except for persons and entities
                  who have expressly waived such right or who have been given


                                       18


                  proper notice and have failed to exercise such right within
                  the time or times required under the terms and conditions of
                  such right;

                           (x) the statements in the Prospectus (other than the
                  financial statements and related schedules and other financial
                  and statistical data contained or incorporated by reference
                  therein, as to which such counsel need express no opinion)
                  under the headings "Our Company," "Risk Factors," "Securities
                  Offered by this Prospectus" and "Plan of Distribution,
                  Description of Preferred Stock and Description of Warranties,"
                  Item 15 of Part II of each of the Registration Statements, and
                  in the Company's Annual Report on Form 10-K for the year ended
                  December 31, 2003 under Item 1, "Business," to the extent that
                  they constitute summaries of matters of law or regulation or
                  legal conclusions, have been reviewed by such counsel and
                  fairly present the matters described therein in all material
                  respects;

                           (xi) to such counsel's knowledge and other than as
                  set forth in the Prospectus or as otherwise disclosed to the
                  Representatives, there are no legal or governmental
                  proceedings pending to which the Company or its subsidiary is
                  a party or of which any property or asset of the Company or
                  its subsidiary is the subject which, singularly or in the
                  aggregate, if determined adversely to the Company or its
                  subsidiary, would prevent or adversely affect the ability of
                  the Company to perform its obligations under this Agreement;
                  and, to such counsel's knowledge, no such proceedings are
                  threatened or contemplated by governmental authorities or
                  threatened by others;

                           (xii) The descriptions of the following contracts of
                  the Company (other than the financial statements and related
                  schedules and other financial and statistical data contained
                  therein, as to which such counsel need express no opinion)
                  contained in the Prospectus or the Registration Statements or
                  in the documents incorporated by reference therein are
                  accurate in all material respects and fairly present the
                  information shown: (i) the 1997 Sponsored Research Agreement
                  between the Company and Princeton University, as amended, (ii)
                  the 1997 Amended License Agreement between the Company,
                  Princeton University and the University of Southern
                  California, as amended, (iii) the License Agreement between
                  the Company and Motorola, Inc., dated as of September 29,
                  2000, (iv) the Development and License Agreement, dated as of
                  October 1, 2000, by and between PPG Industries, Inc. and the
                  Company, as amended, and the related Supply Agreement between
                  PPG Industries, Inc. and the Company, also dated October 1,
                  2000 (v) the Development and License Agreement, dated as of
                  July 19, 2000, between Aixtron AG and the Company, (vi) the
                  Securities Purchase Agreement, dated as of August 22, 2001,
                  among the Company, Pine Ridge Financial Inc. and Strong River
                  Investments, Inc., as amended and (vii) the Voting Agreement,
                  dated as of August 22, 2002, among the Company, Pine Ridge
                  Financial Inc. and Strong River Investments, Inc., as amended.

                           (xiii) each of the Registration Statements, as of its
                  effective date, the Base Prospectus, as of its date and the
                  Final Supplement, as of its date, and any further amendments
                  or supplements thereto, as of their respective dates, made by
                  the Company prior to the First Closing Date (other than the


                                       19


                  financial statements and related schedules and other financial
                  and statistical data contained or incorporated by reference
                  therein, as to which such counsel need express no opinion)
                  complied as to form in all material respects with the
                  requirements of the Securities Act and the Rules and
                  Regulations, and the documents incorporated by reference in
                  the Prospectus and any further amendment or supplement to any
                  such incorporated document made by the Company prior to the
                  First Closing Date (other than the financial statements and
                  related schedules and other financial and statistical data
                  contained or incorporated by reference therein, as to which
                  such counsel need express no opinion), when they became
                  effective or were filed with the Commission, as the case may
                  be, complied as to form in all material respects with the
                  requirements of the Securities Act or the Exchange Act, as
                  applicable, and the rules and regulations of the Commission
                  thereunder; and

                           (xiv) neither the Company nor its subsidiary is, or
                  after giving effect to the offering and sale of the Stock and
                  the application of the proceeds thereof as described in the
                  Prospectus, will be, an "investment company" as defined in the
                  Investment Company Act of 1940, as amended.

                  Such counsel shall also have furnished to the Representatives
         a written statement, addressed to the Underwriters and dated such
         Closing Date, in form and substance reasonably satisfactory to the
         Representatives, to the effect that (x) such counsel has acted as
         counsel to the Company in connection with the preparation of the
         Registration Statements and the Prospectus, (y) such counsel
         participated in conferences with officers and other representatives of
         the Company and the auditors of the Company in connection with the
         preparation of the Registration Statements and the Prospectus, and
         conferences with the Representatives and their counsel, and the
         auditors, officers and other representatives of the Company, in
         connection with the preparation of the Prospectus and (z) although such
         counsel need not pass upon or assume any responsibility for the
         accuracy, completeness or fairness of the statements included in the
         Registration Statements or the Prospectus (and such counsel may rely as
         to materiality to a large extent upon discussions with and
         representations and opinions of the officers and other representatives
         of the Company) no facts have come to the attention of such counsel to
         cause such counsel to believe that the Registration Statements, as of
         their respective effective dates, contained any untrue statement of a
         material fact or omitted to state any material fact required to be
         stated therein or necessary in order to make the statements therein not
         misleading, or that the Prospectus as of the date of the Final
         Supplement and the date of such written statement, contained or contain
         any untrue statement of a material fact or omitted or omits to state
         any material fact required to be stated therein or necessary in order
         to make the statements therein, in light of the circumstances under
         which they were made, not misleading; it being understood that such
         counsel need express no opinion as to the financial statements and
         related schedules, or other financial or statistical data derived
         therefrom contained or incorporated by reference in the Registration
         Statements or the Prospectus.

         (e) The Representatives shall have received from Kenyon & Kenyon,
         patent counsel for the Company such counsel's written opinion,
         addressed to the Underwriters and dated as of the First Closing Date,
         in form and substance attached hereto as Schedule E.

         (f) The Representatives shall have received from Brown Raysman
         Millstein Felder & Steiner LLP, counsel for the Underwriters, such


                                       20


         opinion or opinions, dated such Closing Date and addressed to the
         Representatives, with respect to such matters as the Underwriters may
         reasonably require, and the Company shall have furnished to such
         counsel such documents as they reasonably request for enabling them to
         pass upon such matters.

         (g) The Company shall have furnished to the Representatives a
         certificate, dated such Closing Date, executed by (1) its Chairman of
         the Board, its President or an Executive Vice President and (2) its
         Chief Financial Officer stating that (i) such officers have carefully
         examined the Registration Statements and the Prospectus and, in their
         opinion, each Registration Statement as of its effective date and the
         Prospectus, as of the date of the Final Supplement, did not include any
         untrue statement of a material fact and did not omit to state a
         material fact required to be stated therein or necessary to make the
         statements therein (in the case of the Prospectus, in light of the
         circumstances in which such statements were made) not misleading, (ii)
         since the effective date of the First Registration Statement no event
         has occurred which should have been set forth in a supplement or
         amendment to a Registration Statement or the Prospectus which has not
         been so set forth or incorporated by reference in a Registration
         Statement, (iii) to their knowledge after reasonable investigation, as
         of the Closing Date, the representations and warranties of the Company
         and its subsidiary in this Agreement are true and correct and the
         Company and its subsidiary have complied with all agreements and
         satisfied all conditions on its part to be performed or satisfied
         hereunder at or prior to the Closing Date, and (iv) subsequent to the
         date of the most recent financial statements included or incorporated
         by reference in the Prospectus, there has been no material adverse
         change in the financial position or results of operation of the Company
         and its subsidiary, or any change, or any development including a
         prospective change, in or affecting the condition (financial or
         otherwise), results of operations, business or prospects of the Company
         and its subsidiary taken as a whole, except as set forth in the
         Prospectus.

         (h) At the time of the execution of this Agreement, the Representatives
         shall have received from KPMG LLP a letter, addressed to the
         Underwriters and dated such date, in form and substance reasonably
         satisfactory to the Representatives (i) confirming that they are
         independent certified public accountants with respect to the Company
         within the meaning of the Securities Act and the Rules and Regulations
         and (ii) stating the conclusions and findings of such firm with respect
         to the consolidated financial statements and certain financial
         information contained or incorporated by reference in the Prospectus.

         (i) On the Closing Date, the Representatives shall have received a
         letter (the "bring-down letter") from KPMG LLP addressed to the
         Underwriters and dated the Closing Date confirming, as of the date of
         the bring-down letter (or, with respect to matters involving changes or
         developments since the respective dates as of which specified financial
         information is given in the Prospectus as of a date not more than three
         Business Days prior to the date of the bring-down letter), the
         conclusions and findings of such firm with respect to the financial
         information and other matters covered by its letter delivered to the
         Representatives concurrently with the execution of this Agreement
         pursuant to Section 6(h).

         (j) (i) Neither the Company nor its subsidiary shall have sustained
         since the date of the latest audited consolidated financial statements
         included or incorporated by reference in the Prospectus any loss or
         interference with its business from fire, explosion, flood, terrorist
         act or other calamity, whether or not covered by insurance, or from any


                                       21


         labor dispute or court or governmental action, order or decree,
         otherwise than as set forth in or contemplated by the Prospectus, and
         (ii) since such date there shall not have been any change in the
         capital stock (except any changes relating to the granting or exercise
         of stock options or equity awards pursuant to the Company's 1995 Stock
         Option Plan as amended) or long-term debt of the Company or its
         subsidiary or any change, or any development involving a prospective
         change, in or affecting the business, general affairs, management,
         financial position, stockholders' equity, results of operations or
         prospects of the Company and its subsidiary, otherwise than as set
         forth in or contemplated by the Prospectus, the effect of which, in any
         such case described in clause (i) or (ii), is, in the judgment of the
         Representatives, so material and adverse as to make it impracticable or
         inadvisable to proceed with the sale or delivery of the Stock on the
         terms and in the manner contemplated by the Prospectus.

         (k) The Stock shall have been listed and admitted and authorized for
         trading on Nasdaq, and satisfactory evidence of such actions shall have
         been provided to the Representatives.

         (l) The Company shall have furnished to the Representatives a letter
         substantially in the form of Exhibit I hereto from each executive
         officer and director of the Company and each stockholder listed on
         Schedule B hereto.

         (m) Subsequent to the execution and delivery of this Agreement, there
         shall not have occurred any of the following: (i) trading in securities
         generally on the New York Stock Exchange, Nasdaq, the American Stock
         Exchange or in the over-the-counter market, or trading in any
         securities of the Company on any exchange or in the over-the-counter
         market, shall have been suspended or minimum or maximum prices or
         maximum ranges for prices shall have been established on any such
         exchange or such market by the Commission, by such exchange or by any
         other regulatory body or governmental authority having jurisdiction,
         (ii) a banking moratorium shall have been declared by Federal or state
         authorities or a material disruption has occurred in commercial banking
         or securities settlement or clearance services in the United States,
         (iii) the United States shall have become engaged in hostilities in
         which it is not currently engaged, or the subject of an act of
         terrorism, or there shall have been an escalation in existing
         hostilities involving the United States or there shall have been a
         declaration of a national emergency or war by the United States or (iv)
         there shall have occurred such a material adverse change in general
         economic, political or financial conditions (or the effect of
         international conditions on the financial markets in the United States
         shall be such) as to make it, in the sole judgment of the
         Representatives, impracticable or inadvisable to proceed with the sale
         or delivery of the Stock on the terms and in the manner contemplated by
         the Prospectus.

         (n) No action shall have been taken and no statute, rule, regulation or
         order shall have been enacted, adopted or issued by any governmental
         agency or body which would, as of the Closing Date, prevent the
         issuance or sale of the Stock or be likely to result in a Material
         Adverse Effect; and no injunction, restraining order or order of any
         other nature by any federal or state court of competent jurisdiction
         shall have been issued as of the Closing Date which would prevent the
         issuance or sale of the Stock or be likely to result in a Material
         Adverse Effect.

         (o) Prior to the Closing Date, the Company shall have furnished to the
         Representatives such further information, certificates of public
         officials and documents as the Representatives may reasonably request.

                                       22


         All opinions, letters, evidence and certificates mentioned above or
elsewhere in this Agreement shall be deemed to be in compliance with the
provisions hereof only if they are in form and substance reasonably satisfactory
to counsel for the Underwriters.

7.       INDEMNIFICATION AND CONTRIBUTION.

         (a) The Company shall indemnify and hold harmless each Underwriter, its
         officers, employees, representatives and agents and each person, if
         any, who controls any Underwriter within the meaning of the Securities
         Act (collectively the "Underwriter Indemnified Parties" and each an
         "Underwriter Indemnified Party") against any loss, claim, damage or
         liability, joint or several, or any action in respect thereof, to which
         that Underwriter Indemnified Party may become subject, under the
         Securities Act or otherwise, insofar as such loss, claim, damage,
         liability or action arises out of or is based upon (i) any untrue
         statement or alleged untrue statement of a material fact contained in
         the Preliminary Supplement, any Registration Statement or the
         Prospectus or in any amendment or supplement thereto or (ii) the
         omission or alleged omission to state in any Preliminary Supplement,
         any Registration Statement or the Prospectus or in any amendment or
         supplement thereto a material fact required to be stated therein or
         necessary to make the statements therein not misleading and shall
         reimburse each Underwriter Indemnified Party promptly upon demand for
         any legal or other expenses reasonably incurred by that Underwriter
         Indemnified Party in connection with investigating or preparing to
         defend or defending against or appearing as a third party witness in
         connection with any such loss, claim, damage, liability or action as
         such expenses are incurred; provided, however, that the Company shall
         not be liable in any such case to the extent that any such loss, claim,
         damage, liability or action arises out of or is based upon an untrue
         statement or alleged untrue statement in or omission or alleged
         omission from the Preliminary Supplement, any Registration Statement or
         the Prospectus or any such amendment or supplement in reliance upon and
         in conformity with written information furnished to the Company through
         the Representatives by or on behalf of any Underwriter specifically for
         use therein, which information the parties hereto agree is limited to
         the Underwriter's Information (as defined in Section 16). This
         indemnity agreement is not exclusive and will be in addition to any
         liability, which the Company might otherwise have and shall not limit
         any rights or remedies which may otherwise be available at law or in
         equity to each Underwriter Indemnified Party.

         (b) Each Underwriter, severally and not jointly, shall indemnify and
         hold harmless the Company its officers, employees, representatives and
         agents, each of its directors and each person, if any, who controls the
         Company within the meaning of the Securities Act (collectively the
         "Company Indemnified Parties" and each a "Company Indemnified Party")
         against any loss, claim, damage or liability, joint or several, or any
         action in respect thereof, to which the Company Indemnified Parties may
         become subject, under the Securities Act or otherwise, insofar as such
         loss, claim, damage, liability or action arises out of or is based upon
         (i) any untrue statement or alleged untrue statement of a material fact
         contained in the Preliminary Supplement, any Registration Statement or
         the Prospectus or in any amendment or supplement thereto or (ii) the
         omission or alleged omission to state therein a material fact required
         to be stated therein or necessary to make the statements therein not
         misleading, but with respect to each of clause (i) and clause (ii) only
         to the extent that the untrue statement or alleged untrue statement or
         omission or alleged omission was made in reliance upon and in


                                       23


         conformity with written information furnished to the Company through
         the Representatives by or on behalf of that Underwriter specifically
         for use therein, and shall reimburse the Company Indemnified Parties
         promptly upon demand for any legal or other expenses reasonably
         incurred by such parties in connection with investigating or preparing
         to defend or defending against or appearing as third party witness in
         connection with any such loss, claim, damage, liability or action as
         such expenses are incurred; provided that the parties hereto hereby
         agree that such written information provided by the Underwriters
         consists solely of the Underwriter's Information. This indemnity
         agreement is not exclusive and will be in addition to any liability,
         which the Underwriters might otherwise have and shall not limit any
         rights or remedies which may otherwise be available at law or in equity
         to the Company Indemnified Parties.

         (c) Promptly after receipt by an indemnified party under this Section 7
         of notice of any claim or the commencement of any action, the
         indemnified party shall, if a claim in respect thereof is to be made
         against the indemnifying party under this Section 7, notify the
         indemnifying party in writing of the claim or the commencement of that
         action; provided, however, that the failure to notify the indemnifying
         party shall not relieve it from any liability which it may have under
         this Section 7 except to the extent it has been materially prejudiced
         by such failure; and, provided, further, that the failure to notify the
         indemnifying party shall not relieve it from any liability which it may
         have to an indemnified party otherwise than under this Section 7. If
         any such claim or action shall be brought against an indemnified party,
         and it shall notify the indemnifying party thereof, the indemnifying
         party shall be entitled to participate therein and, to the extent that
         it wishes, jointly with any other similarly notified indemnifying
         party, to assume the defense thereof with counsel reasonably
         satisfactory to the indemnified party. After notice from the
         indemnifying party to the indemnified party of its election to assume
         the defense of such claim or action, the indemnifying party shall not
         be liable to the indemnified party under this Section 7 for any legal
         or other expenses subsequently incurred by the indemnified party in
         connection with the defense thereof other than reasonable costs of
         investigation; provided, however, that any indemnified party shall have
         the right to employ separate counsel in any such action and to
         participate in the defense thereof but the fees and expenses of such
         counsel shall be at the expense of such indemnified party unless (i)
         the employment thereof has been specifically authorized by the
         indemnifying party in writing, (ii) such indemnified party shall have
         been advised by such counsel that there may be one or more legal
         defenses available to it which are different from or additional to
         those available to the indemnifying party and in the reasonable
         judgment of such counsel it is advisable for such indemnified party to
         employ separate counsel or (iii) the indemnifying party has failed to
         assume the defense of such action in a reasonably prompt manner and
         employ counsel reasonably satisfactory to the indemnified party, in
         which case, if such indemnified party notifies the indemnifying party
         in writing that it elects to employ separate counsel at the expense of
         the indemnifying party, the indemnifying party shall not have the right
         to assume the defense of such action on behalf of such indemnified
         party, it being understood, however, that the indemnifying party shall
         not, in connection with any one such action or separate but
         substantially similar or related actions in the same jurisdiction
         arising out of the same general allegations or circumstances, be liable
         for the reasonable fees and expenses of more than one separate firm of
         attorneys at any time for all such indemnified parties, which firm
         shall be designated in writing by SG Cowen if the indemnified parties
         under this Section 7 consist of any Underwriter Indemnified Party, or
         by the Company if the indemnified parties under this Section 7 consist
         of any Company Indemnified Parties. Each indemnified party, as a
         condition of the indemnity agreements contained in Sections 7(a) and
         7(b) shall use all reasonable efforts to cooperate with the
         indemnifying party in the defense of any such action or claim. Subject
         to the provisions of Section 7(d) below, no indemnifying party shall be


                                       24


         liable for any settlement, compromise or the consent to the entry of
         judgment in connection with any such action effected without its
         written consent (which consent shall not be unreasonably withheld), but
         if settled with its written consent or if there be a final judgment for
         the plaintiff in any such action, the indemnifying party agrees to
         indemnify and hold harmless any indemnified party from and against any
         loss or liability by reason of such settlement or judgment.

         (d) If at any time an indemnified party shall have requested that an
         indemnifying party reimburse the indemnified party for reasonable fees
         and actual out-of-pocket expenses of counsel to which the indemnified
         party is entitled to be reimbursed pursuant to Section 7(c) above, such
         indemnifying party agrees that it shall be liable for any settlement of
         the nature contemplated by this Section 7 effected without its written
         consent if (i) such settlement is entered into more than 45 days after
         receipt by such indemnifying party of the request for reimbursement,
         (ii) such indemnifying party shall have received notice of the terms of
         such settlement at least 30 days prior to such settlement being entered
         into and (iii) such indemnifying party shall not have reimbursed such
         indemnified party in accordance with such request for reimbursement for
         fees and expenses of counsel prior to the date of such settlement.

         (e) If the indemnification provided for in this Section 7 is
         unavailable or insufficient to hold harmless an indemnified party under
         Section 7(a) or 7(b), then each indemnifying party shall, in lieu of
         indemnifying such indemnified party, contribute to the amount paid or
         payable by such indemnified party as a result of such loss, claim,
         damage or liability, or action in respect thereof, (i) in such
         proportion as shall be appropriate to reflect the relative benefits
         received by the Company on the one hand and the Underwriters on the
         other, from the offering of the Stock or (ii) if the allocation
         provided by clause (i) above is not permitted by applicable law, in
         such proportion as is appropriate to reflect not only the relative
         benefits referred to in clause (i) above but also the relative fault of
         the Company on the one hand and the Underwriters on the other, with
         respect to the statements or omissions which resulted in such loss,
         claim, damage or liability, or action in respect thereof, as well as
         any other relevant equitable considerations. The relative benefits
         received by the Company on the one hand and the Underwriters on the
         other, with respect to such offering shall be deemed to be in the same
         proportion as the total net proceeds from the offering of the Stock
         purchased under this Agreement (before deducting expenses) received by
         the Company bears to the total underwriting discounts and commissions
         received by the Underwriters with respect to the Stock purchased under
         this Agreement, in each case as set forth in the table on the cover
         page of the Prospectus. The relative fault shall be determined by
         reference to, among other things, whether the untrue or alleged untrue
         statement of a material fact or the omission or alleged omission to
         state a material fact relates to information supplied by the Company on
         the one hand or the Underwriters on the other, as the case may be, the
         intent of the parties and their relative knowledge, access to
         information and opportunity to correct or prevent such untrue statement
         or omission; provided that the parties hereto agree that the written
         information furnished to the Company through the Representatives by or
         on behalf of the Underwriters for use in any Preliminary Supplement,
         any Registration Statement or the Prospectus consists solely of the
         Underwriter's Information. The Company and the Underwriters agree that
         it would not be just and equitable if contributions pursuant to this
         Section 7(e) were to be determined by pro rata allocation (even if the
         Underwriters were treated as one entity for such purpose) or by any
         other method of allocation which does not take into account the
         equitable considerations referred to herein. The amount paid or payable
         by an indemnified party as a result of the loss, claim, damage or
         liability, or action in respect thereof, referred to above in this
         Section 7(e) shall be deemed to include, for purposes of this Section
         7(e), any legal or other expenses reasonably incurred by such


                                       25


         indemnified party in connection with investigating or defending any
         such action or claim. Notwithstanding the provisions of this Section
         7(e), no Underwriter shall be required to contribute any amount in
         excess of the amount by which the total price at which the Stock
         underwritten by it and distributed to the public were offered to the
         public less the amount of any damages which such Underwriter has
         otherwise paid or become liable to pay by reason of any untrue or
         alleged untrue statement or omission or alleged omission. No person
         guilty of fraudulent misrepresentation (within the meaning of Section
         11(f) of the Securities Act) shall be entitled to contribution from any
         person who was not guilty of such fraudulent misrepresentation.

         The Underwriters' obligations to contribute as provided in Sections
7(e) are several in proportion to their respective underwriting obligations and
not joint.

8. TERMINATION. The obligations of the Underwriters hereunder may be terminated
by SG Cowen, in its absolute discretion by notice given to and received by the
Company prior to delivery of and payment for the Firm Stock if, prior to that
time, any of the events described in Sections 6(j) or 6(m) have occurred or if
the Underwriters shall decline to purchase the Stock for any reason permitted
under this Agreement.

9. REIMBURSEMENT OF UNDERWRITERS' EXPENSES. If (a) this Agreement shall have
been terminated pursuant to Section 8 or 10, (b) the Company shall fail to
tender the Stock for delivery to the Underwriters for any reason not permitted
under this Agreement, or (c) the Underwriters shall decline to purchase the
Stock for any reason permitted under this Agreement, then the Company shall
reimburse the Underwriters for the reasonable fees and expenses of their counsel
and for such other out-of-pocket expenses as shall have been reasonably incurred
by them in connection with this Agreement and the proposed purchase of the Stock
and, upon demand, the Company shall pay the full amount thereof to SG Cowen. If
this Agreement is terminated pursuant to Section 10 by reason of the default of
one or more Underwriters and the subsequent failure to make arrangements for the
purchase of the shares as to which such default has occurred, the Company shall
not be obligated to reimburse any defaulting Underwriter on account of those
expenses described in this Section 9.

10. SUBSTITUTION OF UNDERWRITERS. If any Underwriter or Underwriters shall
default in its or their obligations to purchase shares of Stock hereunder and
the aggregate number of shares which such defaulting Underwriter or Underwriters
agreed but failed to purchase does not exceed ten percent (10%) of the total
number of shares underwritten, the other Underwriters shall be obligated
severally, in proportion to their respective commitments hereunder, to purchase
the shares which such defaulting Underwriter or Underwriters agreed but failed
to purchase. If any Underwriter or Underwriters shall so default and the
aggregate number of shares with respect to which such default or defaults occur
is more than ten percent (10%) of the total number of shares underwritten and
arrangements satisfactory to the Representatives and the Company for the
purchase of such shares by other persons are not made within forty-eight (48)
hours after such default, this Agreement shall terminate.

         If the remaining Underwriters or substituted Underwriters are required
hereby or agree to take up all or part of the shares of Stock of a defaulting
Underwriter or Underwriters as provided in this Section 10, (i) the Company
shall have the right to postpone the Closing Dates for a period of not more than
five (5) full Business Days in order that the Company may effect whatever
changes may thereby be made necessary in the Registration Statements or the


                                       26


Prospectus, or in any other documents or arrangements, and the Company agrees
promptly to file any amendments to the Registration Statements or supplements to
the Prospectus which may thereby be made necessary, and (ii) the respective
numbers of shares to be purchased by the remaining Underwriters or substituted
Underwriters shall be taken as the basis of their underwriting obligation for
all purposes of this Agreement. Nothing herein contained shall relieve any
defaulting Underwriter of its liability to the Company or the other Underwriters
for damages occasioned by its default hereunder. Any termination of this
Agreement pursuant to this Section 10 shall be without liability on the part of
any non-defaulting Underwriter or the Company, except expenses to be paid
pursuant to Section 5 and except the provisions of Section 7 shall not terminate
and shall remain in effect.

11. SUCCESSORS; PERSONS ENTITLED TO BENEFIT OF AGREEMENT. This Agreement shall
inure to the benefit of and be binding upon the several Underwriters and the
Company and their respective successors. Nothing expressed or mentioned in this
Agreement is intended or shall be construed to give any person other than the
persons mentioned in the preceding sentence any legal or equitable right, remedy
or claim under or in respect of this Agreement, or any provisions herein
contained, this Agreement and all conditions and provisions hereof being
intended to be and being for the sole and exclusive benefit of such persons and
for the benefit of no other person; except that the representations, warranties,
covenants, agreements and indemnities of the Company and its subsidiary
contained in this Agreement shall also be for the benefit of the Underwriter
Indemnified Parties, and the indemnities of the several Underwriters shall also
be for the benefit of the Company Indemnified Parties. It is understood that the
Underwriter's responsibility to the Company is solely contractual in nature and
the Underwriters do not owe the Company, or any other party, any fiduciary duty
as a result of this Agreement.

12. SURVIVAL OF INDEMNITIES, REPRESENTATIONS, WARRANTIES, ETC. The respective
indemnities, covenants, agreements, representations, warranties and other
statements of the Company, its subsidiary and the several Underwriters, as set
forth in this Agreement or made by them respectively, pursuant to this
Agreement, shall remain in full force and effect, regardless of any
investigation made by or on behalf of any Underwriter, the Company or any person
controlling any of them and shall survive delivery of and payment for the Stock.

13. NOTICES. All statements, requests, notices and agreements hereunder shall be
in writing, and:

         (a) if to the Underwriters, shall be delivered or sent by mail, telex
         or facsimile transmission to SG Cowen Securities Corporation, 1221
         Avenue of the Americas, New York, New York 10020, Attention: Veronica
         Iuliano, Esq. (Fax: 212-278-7995), with a copy to: Brown Raysman
         Millstein Felder & Steiner LLP, 900 Third Avenue, New York, New York
         10022, Attention: Stuart Bressman, Esq. (Fax: 212-895-2900).

         (b) if to the Company shall be delivered or sent by mail, telex or
         facsimile transmission to Universal Display Corporation, 375 Phillips
         Boulevard., Ewing, New Jersey 08618, Attention: Scott Bovino (Fax:
         609-671-0995), with a copy to: Morgan, Lewis & Bockius LLP, 1701 Market
         Street, Philadelphia, Pennsylvania 19103, Attention: Richard A. Silfen,
         Esq. (Fax: 215-963-5001).

14. DEFINITIONS OF CERTAIN TERMS. The terms which follow, when used in this
Agreement, shall have the meanings indicated.

                                       27


                  "Business Day" shall mean any day other than a Saturday, a
         Sunday, a legal holiday, a day on which banking institutions or trust
         companies are authorized or obligated by law to close in New York City
         or any day on which the New York Stock Exchange, Inc. is not open for
         trading.

                  "Interference Proceeding" shall have the meaning set forth
         in 35 U.S.C.ss.135.

                  "Rule 424" and "Rule 430A" refer to such rules under the
         Securities Act.

                  "To the Company's knowledge" shall mean that which the
         officers listed on Schedule D attached hereto or directors of the
         Company know or should have known using the exercise of reasonable due
         diligence in the course of performing their duties on behalf of the
         Company.

         For purposes of Section 2(d) of this Agreement, the term "prospects"
shall mean the prospects of the Company described in the Registration Statements
or the Prospectus.

15. GOVERNING LAW. This Agreement shall be governed by and construed in
accordance with the laws of the State of New York.

16. UNDERWRITERS' INFORMATION. The parties hereto acknowledge and agree that,
for all purposes of this Agreement, the Underwriters' Information consists
solely of the following information in the Prospectus: (i) last paragraph on the
front cover page concerning the terms of the offering by the Underwriters; and
(ii) the statements concerning the Underwriters contained in the third, ninth,
tenth and eleventh paragraphs (relating to stabilization) under the heading
"Underwriting".

17. AUTHORITY OF THE REPRESENTATIVES. In connection with this Agreement, the
Representatives will act for and on behalf of the several Underwriters, and any
action taken under this Agreement by the Representatives, will be binding on all
the Underwriters .

18. PARTIAL UNENFORCEABILITY. The invalidity or unenforceability of any Section,
paragraph or provision of this Agreement shall not affect the validity or
enforceability of any other Section, paragraph or provision hereof. If any
Section, paragraph or provision of this Agreement is for any reason determined
to be invalid or unenforceable, there shall be deemed to be made such minor
changes (and only such minor changes) as are necessary to make it valid and
enforceable.

19. GENERAL. This Agreement constitutes the entire agreement of the parties to
this Agreement and supersedes all prior written or oral and all contemporaneous
oral agreements, understandings and negotiations with respect to the subject
matter hereof. In this Agreement, the masculine, feminine and neuter genders and
the singular and the plural include one another. The section headings in this
Agreement are for the convenience of the parties only and will not affect the
construction or interpretation of this Agreement. This Agreement may be amended
or modified, and the observance of any term of this Agreement may be waived,
only by a writing signed by the Company and the Representatives.

20. COUNTERPARTS. This Agreement may be signed in any number of counterparts,
each of which shall be an original, with the same effect as if the signatures
thereto and hereto were upon the same instrument.


                                       28



         If the foregoing is in accordance with your understanding of the
agreement between and among the Company and the several Underwriters, kindly
indicate your acceptance in the space provided for that purpose below.

                                  Very truly yours,


                                  UNIVERSAL DISPLAY CORPORATION

                                  By: /s/ Sidney D. Rosenblatt
                                     ------------------------------------------
                                       Name:  Sidney D. Rosenblatt
                                       Title: Executive Vice President,
                                              Chief Financial Officer,
                                              Secretary and Treasurer



Accepted as of
the date first above written:

SG COWEN SECURITIES CORPORATION
NEEDHAM & COMPANY, INC.
HARRIS NESBITT CORP.
     Acting on their own behalf
     and as Representatives of
     several Underwriters
     referred to in the
     foregoing Agreement.

By: SG COWEN SECURITIES CORPORATION


     /s/ Graham A. Powis
By:  ----------------------------------
     Name:  Graham A. Powis
     Title: Managing Director






                                   SCHEDULE A

                                               Number               Number of
                                              of Firm                Optional
                                               Shares                 Shares
                                               to be                  to be
                                             Purchased              Purchased

SG Cowen Securities Corporation              1,500,000               225,000
                                             ---------               -------

Needham & Company, Inc.                       875,000                131,250
                                             ---------               -------

Harris Nesbitt Corp.                          125,000                 18,750
                                             ---------               -------

Total                                        2,500,000               375,000
                                             =========               =======







                                   SCHEDULE B

                   Shareholders Subject to Lock-up Agreements


Lori Rubenstein (1)
Scott Seligsohn (1)
Clifford D. Schlesinger (2)
PPG Industries, Inc.


- --------------

(1)    In their individual capacities and in their capacities as trustees of
       certain trusts

(2)    Solely in his capacity as trustee of certain trusts






                                   SCHEDULE C

                                  Jurisdictions

Universal Display Corporation
- -----------------------------

Domicile:  Pennsylvania

Foreign Qualification:  New Jersey



UDC, Inc.
- ---------

Domicile:  New Jersey

Foreign Qualification:  Idaho, Pennsylvania






                                   SCHEDULE D

                                    Officers


Name                          Title
- ----                          -----
Sherwin I. Seligsohn          Chairman of the Board and Chief Executive Officer
Steven V. Abramson            President and Chief Operating Officer
Sidney D. Rosenblatt          Executive Vice President, Chief Financial
                              Officer, Secretary and Treasurer
Julie J. Brown                Vice President and Chief Technical Officer
Scott C. Bovino               Vice President and General Counsel
Ronald J. Campbell            Vice President, Intellectual Property
Michael Hack                  Vice President, Strategic Product Development
Janice K. Mahon               Vice President, Technology Commercialization








                                   SCHEDULE E


                               Form of IP Opinion







                                    EXHIBIT I

                                Lock-Up Agreement

                                                              ____________, 2004
SG Cowen Securities Corporation
Needham & Company, Inc.
Harris Nesbitt Corp.
   As Representatives of the
   several Underwriters
c/o SG Cowen Securities Corporation
1221 Avenue of the Americas
New York, New York  10020

         Re:   Universal Display Corporation - Public Offering of Common Stock

Dear Sirs:

         In order to induce SG Cowen Securities Corporation ("SG Cowen"),
Needham & Company, Inc. and Harris Nesbitt Corp. (together with SG Cowen, the
"Represenatatives") to enter in to a certain underwriting agreement (the
"Underwriting Agreement") with Universal Display Corporation, a Pennsylvania
corporation (the "Company"), with respect to the public offering of shares (the
"Offering") of the Company's Common Stock, par value $.01 per share ("Common
Stock"), the undersigned hereby agrees that for a period of 90 days following
the date of the final prospectus (the "Final Prospectus") filed by the Company
with the Securities and Exchange Commission in connection with such public
offering, the undersigned will not, without the prior written consent of SG
Cowen, directly or indirectly, (i) offer, sell, assign, transfer, pledge,
contract to sell, or otherwise dispose of, any shares of Common Stock
(including, without limitation, Common Stock which may be deemed to be
beneficially owned by the undersigned in accordance with the rules and
regulations promulgated under the Securities Act of 1933 (the "Securities Act")
and the Securities Exchange Act of 1934, as the same may be amended or
supplemented from time to time (such shares, the "Beneficially Owned Shares"))
or securities convertible into or exercisable or exchangeable for Common Stock,
(ii) enter into any swap, hedge or similar agreement or arrangement that
transfers in whole or in part, the economic risk of ownership of the
Beneficially Owned Shares or securities convertible into or exercisable or
exchangeable in Common Stock or (iii) engage in any short selling of the Common
Stock. Notwithstanding the foregoing, nothing contained herein will be deemed to
restrict or prohibit the transfer of shares of Common Stock, Beneficially Owned
Shares or securities convertible into or exercisable or exchangable for shares
of Common Stock (i) as a bona fide gift, provided the recipient thereof agrees
in writing to be bound by the terms thereof or (ii) as a distribution to
partners, retired partners or the estates of such partners or retired partners
or shareholders of the undersigned, provided that the distributees thereof agree
in writing to be bound by the terms hereof.

         If (i) the Company issues an earnings release or material news or a
material event relating to the Company occurs during the last 17 days of the
lock-up period, or (ii) prior to the expiration of the lock-up period, the
Company announces that it will release earnings results during the 16-day period
beginning on the last day of the lock-up period, the restrictions imposed by
this Agreement shall continue to apply until the expiration of the 18-day period
beginning on the issuance of the earnings release or the occurrence of the
material news or material event.


         Anything contained herein to the contrary notwithstanding, any person
to whom shares of Common Stock or Beneficially Owned Shares are transferred from
the undersigned from and after the date hereof shall be bound by the terms of
this Agreement.

         In addition, the undersigned hereby waives, from the date hereof until
the expiration of the 90 day period following the date of the Final Prospectus,
any and all rights, if any, to request or demand registration pursuant to the
Securities Act of any shares of Common Stock that are registered in the name of
the undersigned or that are Beneficially Owned Shares. In order to enable the
aforesaid covenants to be enforced, the undersigned hereby consents to the
placing of legends and/or stop-transfer orders with the transfer agent of the
Common Stock with respect to any shares of Common Stock or Beneficially Owned
Shares.









SIGNATURE BLOCK FOR A NATURAL PERSON
- ------------------------------------


- ------------------------------------------

Name:
     -------------------------------------
                Please Print


Date:
     -------------------



SIGNATURE BLOCK FOR A CORPORATION, PARTNERSHIP, TRUST OR OTHER ENTITY
- ---------------------------------------------------------------------


Name of corporation, partnership, trust or other entity, including type of
entity and jurisdiction of organization:

- -------------------------------------------

- -------------------------------------------
                Please Print



By:
   ----------------------------------------

Name:
     --------------------------------------
                 Please Print
Title:
      -------------------------------------
                 Please Print

Date:
     -------------------






                      [Signature Page to Lock-Up Agreement]