As filed with the Securities and Exchange Commission on September 21, 2001

                                                   Registration No.333-
===============================================================================
                       SECURITIES AND EXCHANGE COMMISSION
                              Washington, DC 20549


                                    FORM S-3
                             REGISTRATION STATEMENT
                                      Under
                           THE SECURITIES ACT OF 1933

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

                          UNIVERSAL DISPLAY CORPORATION
             (Exact name of registrant as specified in its charter)


                                                                          
         Pennsylvania                           3575                            23-2372688
(State or other jurisdiction of     (Primary Standard Industrial   (I.R.S. Employer Identification No.)
incorporation or organization)           Classification No.)


                             375 Phillips Boulevard
                             Ewing, New Jersey 08618
                                 (609) 671-0980
    (Address, including zip code, and telephone number, including area code,
                  of registrant's principal executive offices)

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

                              SHERWIN I. SELIGSOHN
                Chief Executive Officer and Chairman of the Board
                          Universal Display Corporation
                             375 Phillips Boulevard
                             Ewing, New Jersey 08618
                                 (609) 671-0980

            (Name, address, including zip code, and telephone number,
                   including area code, of agent for service)

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

                        Copies of all communications to:

                            STEPHEN M. GOODMAN, ESQ.
                           Morgan, Lewis & Bockius LLP
                               1701 Market Street
                             Philadelphia, PA 19103
                                 (215) 963-5000

Approximate date of commencement of proposed sale to the public: As soon as
practicable after the effective date of this Registration Statement.

         If the only securities being registered on this Form are being offered
pursuant to dividend or interest reinvestment plans, please check the following
box. |_|
         If any of the securities being registered on this Form are to be
offered on a delayed or continuous basis pursuant to Rule 415 under the
Securities Act of 1933, other than securities offered only in connection with
dividend or interest reinvestment plans, check the following box. [X]
         If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. |_|
         If this Form is a post-effective amendment filed pursuant to Rule
462(c) under the Securities Act, check the following box and list the Securities
Act registration statement number of the earlier effective registration
statement for the same offering. |_|
         If delivery of the prospectus is expected to be made pursuant to Rule
434, please check the following box. |_|




---------------------------------------------------------------------------------------------------------------------
      Title of Each Class             Amount           Proposed Maximum        Proposed Maximum         Amount of
of Securities to be Registered   to be Registered     Offering Price Per      Aggregate Offering     Registration Fee
---------------------------------------------------------------------------------------------------------------------
                                                                                              
Common Stock, par value $0.01        2,580,338              $7.895                $20,371,768             $5,093
per share
---------------------------------------------------------------------------------------------------------------------


(1) Fee calculated in accordance with Rule 457(c) of the Securities Act of 1933,
as amended. Estimated solely for the purpose of calculating the registration fee
based on the average of the high and low prices per share of the Registrant's
common stock on September 17, 2001, as reported on the Nasdaq National Market.

The Registrant hereby amends this Registration Statement on such date or dates
as may be necessary to delay its effective date until the Registrant shall file
a further amendment which specifically states that this Registration Statement
shall thereafter become effective in accordance with Section 8(a) of the
Securities Act of 1933 or until the Registration Statement shall become
effective on such date as the Commission, acting pursuant to said Section 8(a),
may determine.


                 SUBJECT TO COMPLETION, DATED SEPTEMBER 21, 2001



PROSPECTUS

                                2,580,338 Shares

                          UNIVERSAL DISPLAY CORPORATION

                                  Common Stock



         The shareholders of Universal Display Corporation identified in this
prospectus under "Selling Shareholders," or their pledgees or assignees, are
offering up to 2,580,338 shares of our common stock for resale to the public.
The selling shareholders will be selling shares of common stock (a) that they
can acquire upon the conversion of preferred stock that they own or may acquire
from us in the future and (b) that they can acquire by exercising warrants that
they own or will acquire from us in the future.

         We will not receive any proceeds from the resale of shares of our
common stock by the selling shareholders. We are paying the expenses of this
offering.

         The primary market for our common stock is the Nasdaq National Market
System, where it trades under the symbol "PANL." Our common stock is also traded
on the Philadelphia Stock Exchange under the symbol "PNL." On September 18,
2001, the last reported sale price of our common stock on the Nasdaq National
Market was $8.25 per share.

         An investment in our common stock involves significant risks. You
should carefully consider the risk factors described on pages 5 to 12 before
investing in our common stock.

         These securities have not been approved by the Securities and Exchange
Commission or any state securities commission, nor have they determined if this
prospectus is accurate or complete. Any representation to the contrary is a
criminal offense.

         The information in this prospectus is not complete and may change. We
may not sell these securities until the registration statement filed with the
Securities and Exchange Commission is effective. This prospectus is not an offer
to sell these securities and it is not soliciting an offer to buy these
securities in any state where the offer or sale is not permitted.


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

                The date of this Prospectus is September 21, 2001


                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----
Cautionary Statement Concerning Forward-Looking Statements..................   1
Universal Display Corporation...............................................   2
Risk Factors................................................................   5
The Offering ...............................................................  12
Use of Proceeds.............................................................  13
Selling Shareholders........................................................  14
Plan of Distribution........................................................  15
About this Prospectus.......................................................  16
Where You Can Find More Information.........................................  17
Legal Opinion...............................................................  17
Experts.....................................................................  17




























                                       i


                              CAUTIONARY STATEMENT
                      CONCERNING FORWARD-LOOKING STATEMENTS

         This prospectus contains forward-looking statements that involve a
number of risks and uncertainties. For such statements, we claim the protection
of the safe harbor for forward-looking statements contained in the Private
Securities Litigation Reform Act of 1995. A number of factors could cause our
actual results, performance or achievements or those of the display technology
industry to be materially different from any future results, performance or
achievements expressed or implied by such forward-looking statements. These
factors include, but are not limited to:

         o  competition in the display technology industry in general and in our
            specific target markets;
         o  changes in prevailing interest rates and the availability of and
            terms of financing to fund the growth of our business;
         o  inflation;
         o  changes in costs of goods and services;
         o  economic conditions in general and in our specific target markets;
         o  changes in consumer preferences and tastes;
         o  demographic changes;
         o  changes in, or failure to comply with, federal, state, local or
            foreign government regulation;
         o  liability and other claims asserted against us;
         o  changes in our commercialization strategy;
         o  the ability to attract and retain qualified personnel;
         o  changes in our capital expenditure plans; and
         o  other factors referred to in this prospectus

         In addition, the forward-looking statements included in this prospectus
are not meant to predict future events or circumstances and may not be realized.
Forward-looking statements can be identified by, among other things, the use of
forward-looking terminology such as "believes," "expects," "may," "will,"
"should," "seek," "pro forma," "anticipates," "intends," or "potential" or the
negative of, or any other variations on, those terms or comparable terminology,
or by discussion of strategy or intentions. Given these uncertainties,
prospective investors are cautioned not to place undue reliance on these
forward-looking statements. We disclaim any obligation to update these factors
or to announce the results of any revisions to any of the forward-looking
statements contained in this prospectus publicly to reflect future events or
developments.





















                                       1


                          UNIVERSAL DISPLAY CORPORATION

         This is a summary of information appearing elsewhere in this
prospectus. This summary does not contain all of the information you should
consider before investing in our common stock. This summary is qualified in its
entirety by, and should be read in conjunction with, the more detailed
information and financial statements, including the notes to the financial
statements, appearing elsewhere in this prospectus or in our annual and
quarterly reports and other filings with the Securities and Exchange Commission.
References in this prospectus to "we," "us," "Company" and "our" refer to
Universal Display Corporation, together with its wholly-owned subsidiary, UDC,
Inc.

Our Company

         Universal Display Corporation is engaged in the research, development
and commercialization of organic light emitting diode, or OLED, technology for
use in flat panel displays, lasers and light generating devices. We expect the
initial market for our technology to be in the electronic flat panel display
industry. This industry includes such products as:

         o  cellular phone displays;
         o  portable personal digital assistants and Internet access-type
            devices;
         o  laptop computers; and
         o  television and computer monitors.

         Stanford Resources, Inc. estimated the size of the electronic display
market to be approximately $41 billion in 2000. The flat panel part of this
market was approximately $17 billion in 2000.

         We have the exclusive, perpetual, worldwide license to commercialize
all OLED technology, intellectual property and know-how developed by Princeton
University and the University of Southern California, subject to the terms of
our Sponsored Research Agreement and License Agreement with those universities.
To date, 47 patents have been issued in the United States. Approximately 75
patent applications (with corresponding foreign protection) have been filed, and
additional patents are being filed monthly. We have also obtained a license,
with rights to sublicense, to 70 US patents, approximately 4 US patent
applications, and additional foreign patents related to OLED technology owned by
Motorola, Inc.

Our OLED Technology

         Organic light emitting diodes are made of material containing a
carbon-based substance that has the capability to emit light when electric
current is passed through it. We, in collaboration with our research and
development partners, are working towards commercializing innovative OLED
technology, including the following six proprietary OLED technology platforms:

         o  TOLED(TM) Technology: Our transparent OLED can be used to create
            transparent displays for information displays on windshields,
            cockpit displays on aircraft and head mounted displays. Transparent
            organic light-emitting devices, or TOLEDs, can also be used in
            numerous portable electronic applications because of their bright
            colors, high contrast, low power requirements and top emission
            characteristics.

         o  SOLED(TM) Technology: Unlike traditional side-by-side display
            architecture, which places the red, green and blue picture elements,
            or pixels, horizontally next to each other, our stacked OLED stacks
            the red, green and blue pixels vertically on top of each other.
            Thus, to display green in the conventional architecture, you turn
            off the red and blue pixels, leaving spaces between each of the
            illuminated green pixels. With a stacked organic light emitting
            device, or SOLED, to display green, you turn off the red and blue
            sections of the stacked pixel component. The stacked architecture of
            the SOLED may increase the resolution of the display by a factor of
            three.

                                       2


         o  FOLED(TM) Technology: Unlike conventional displays, our flexible
            OLEDs can be built on flexible materials such as plastic. We believe
            that such displays will be lighter in weight and will have lower
            power requirements. The flexible organic light emitting device, or
            FOLED, also may provide the opportunity to apply low cost roll to
            roll (web processing) technologies to display fabrication, which can
            reduce the cost, and therefore expand the market, of electronic flat
            panel displays.

         o  Organic Laser Technology: We and our research partners are
            attempting to develop a fourth technology platform based upon the
            ability to fabricate an organic laser utilizing OLED technology. In
            the September 25, 1997 issue of the scientific journal Nature, our
            research partners announced what they believed to be the first
            evidence of lasing from vacuum deposited thin films of organic
            molecules. We believe this is a significant first step towards the
            realization of electrically pumped, solid-state lasers based on
            organic thin films.

         o  High Efficiency PHOLED(TM) Materials: A fifth technology platform
            respects the use of molecules that emit light through the process of
            phosphorescence. This class of molecules has the potential for
            higher efficiency, lower power and longer lifetimes than
            conventional OLED technology which involves the emission of light
            through the process of fluorescence. We and our research partners
            first announced this discovery in the September 10, 1999 issue of
            Nature.

         o  Organic Vapor Phase Deposition: A sixth technology platform involves
            the use of a carrier gas stream in a hot walled reactor at low
            vacuum to precisely deposit the thin layers of organic materials
            used in OLED displays. Conventional OLED fabrication equipment
            evaporates the organic molecules at high vacuum. We have entered
            into a Development and License Agreement with Aixtron AG, a German
            company that manufactures precision semiconductor production
            equipment for LEDs, to further develop, commercialize and produce
            manufacturing equipment for OLEDs based on this technology.

Our Research Partners

         Princeton and USC have been performing research on OLED technology for
many years, and have continued that research for us since 1994. The sponsored
research agreement between us and our research partners, which was originally
executed in 1994, was extended in 1997 for five additional years and is subject
to further extension by mutual agreement.

         Key members of our research team include Dr. Stephen Forrest at
Princeton and Dr. Mark R. Thomson at USC. There are approximately 20 researchers
at Princeton and USC who are engaged in OLED research. We also fund research in
OLEDs at the Massachusetts Institute of Technology (MIT) and the Chitose
Institute of Technology in Japan.

Our Commercialization Strategy

         Our approach to developing technology and penetrating the electronic
display market has four major components:

         o  We are continuing to fund our research partners under the current
            sponsored research agreement and to obtain the worldwide exclusive
            rights to all intellectual property invented in the project.

         o  We are working on the development of reliable commercial prototypes
            and the optimization of the fabrication processes. In 1999, we moved
            into an 11,000 square foot space near Princeton, New Jersey to serve
            as a pilot line facility and technology transfer center. In 2001, we
            leased an additional 10,000 square feet in our building, which we
            plan to start occupying in the fourth quarter of this year.

         o  We have entered into agreements with an equipment manufacturer,
            Aixtron AG; and an organic materials developer and supplier, PPG
            Industries, Inc., to further develop and commercialize our
            technology, and potentially obtain royalties from the sales of
            certain equipment and revenues from the sales of certain materials
            to OLED manufacturers.

                                       3


         o  We intend to license our proprietary OLED technology and enter into
            joint ventures and other strategic alliances with experienced
            manufacturers and users of display products for the volume
            manufacture, distribution and sale of products based upon this
            technology. We do not presently intend to become a volume
            manufacturer.

Our Development Partners

We have announced agreements with the following five companies:

o    Effective April 19, 2001, we entered into a Development and License
     Agreement with Luxell Technologies, Inc. Under the agreement, the parties
     will cooperate in the development of one or more high-contrast,
     high-efficiency OLED displays integrating our TOLED technology and Luxell's
     Black Layer(TM) technology. Pursuant to the terms of the agreement, Luxell
     has obtained a royalty-bearing license to our TOLED technology and high
     efficiency materials for use in Black Layer TOLED displays that may be
     manufactured, marketed or sold. We will be the licensor of the combined
     Black Layer TOLED technology, and the parties will share in the revenues
     from such licensing activities.

o    Effective April 17, 2001, we entered into a Joint Development Agreement
     with Sony Corporation to develop active matrix OLED display devices for use
     in large area monitor applications. By combining our proprietary
     electrophosphorescent materials with Sony's proprietary low temperature
     poly silicon active matrix OLED technology, the parties will seek to
     develop high power efficiency OLED displays.

o    Effective October 1, 2000, we entered into a Development and License
     Agreement with PPG Industries, Inc. (PPG) to leverage our OLED flat panel
     display technology with PPG's expertise in organic materials development
     and manufacturing. A team of PPG scientists and engineers will assist us in
     developing and commercializing our proprietary OLED system. Present
     staffing levels will provide the full time services of 7 PPG employees,
     plus managerial services. Based upon current staffing levels, we anticipate
     issuing to PPG approximately 114,000 shares of common stock annually for
     the period from January 1, 2001 through December 31, 2005. In addition, we
     anticipate issuing to PPG annually warrants to purchase up to an additional
     114,000 shares of our common stock over the period from January 1, 2001
     through December 31, 2005. The amount of equity to be obtained by PPG under
     the agreement is subject to adjustment under certain circumstances. PPG's
     services have an estimated value of approximately $11 million. PPG also has
     the right to request that we grant royalty bearing licenses to PPG for use
     of our OLED technology in certain applications.

     We also entered into a Supply Agreement with PPG whereby PPG will be the
     exclusive supplier of our proprietary materials through December 31, 2007.
     PPG will sell the materials to us, and we will resell them to OLED
     manufacturers.

o    Effective September 29, 2000, we entered into a License Agreement with
     Motorola, Inc., whereby we obtained the rights, with the right to
     sublicense, to 70 US patents, 4 pending US patents, and certain foreign
     patents of Motorola, Inc., related to OLEDs. Our agreement with Motorola
     also includes the opportunity to meet with their product development group,
     although there are no assurances that Motorola will purchase any products
     from the Company or its licensees, or use any of the Company's technology
     in their products. In connection with the rights granted to the Company
     under the agreement, we issued to Motorola 200,000 shares of common stock,
     300,000 shares of Series B Convertible Preferred Stock (each share
     convertible into one share of common stock, subject to adjustment under
     certain circumstances, and vesting 75,000 shares per year), and Warrants to
     purchase an additional 150,000 shares.

o    Effective July 19, 2000, we entered into a Development and License
     Agreement with Aixtron AG of Germany to further develop and commercialize
     manufacturing equipment for OLEDs based on our proprietary technology
     called Organic Vapor Phase Deposition (OVPD). Aixtron AG is a world leader
     in the production of manufacturing equipment for LEDs using MOCVD
     (Metal-organic chemical vapor deposition) technology. Under the agreement,

                                       4


     the Company and Aixtron will engage in a joint development program to
     commercialize OVPD equipment. Aixtron has the exclusive license to produce
     equipment based on this technology, and we will receive a royalty from the
     sale of the equipment.

Executive Offices

         Our executive offices are located at 375 Phillips Boulevard, Ewing, New
Jersey 08618. Our phone number is (609) 671-0980. Our web site can be found at
www.universaldisplay.com.

                                  RISK FACTORS

          An investment in our common stock involves a high degree of risk. In
addition to the other information contained in this prospectus, you should
carefully consider the following risk factors before making an investment
decision concerning our common stock. You should not purchase our common stock
if you cannot afford the loss of your entire investment.

We do not expect to be profitable in the foreseeable future, and may never be
profitable.

         Since inception, we have not generated any product revenues, and have
incurred significant losses, resulting in an accumulated deficit of
approximately $36.8 million, as of June 30, 2001. We expect to incur losses for
the foreseeable future and until such time, if ever, as we are able to achieve
sufficient levels of revenue from the commercial exploitation of the OLED
technology to support our operations. You should note, however, that:

         o  OLED technology may never become commercially viable;
         o  markets for flat panel displays utilizing the OLED technology may be
            limited; and
         o  we may never generate sufficient revenues from the commercial
            exploitation of the OLED technology to become profitable.

Additionally, even if we find commercially viable applications for our OLED
technology, we may never recover our research and development costs.

If we do not receive additional financing in the future, we will not be able
continue the research, development and commercialization of our OLED technology.

         Our capital requirements have been and will continue to be significant.
The completion of the research, development and commercialization of the OLED
technology for potential applications will require significant additional effort
and resources. Our cash on hand is not sufficient to meet all of our future
obligations. When we need additional funds, such funds may not be available on
commercially reasonable terms or at all. If we cannot obtain more money when we
need it, our business might fail. Additionally, if we attempt to raise money in
an offering of our common stock, the issuance of additional stock will dilute
our then existing shareholders.

If our OLED technology is not feasible for product applications, we may never
generate significant revenues.

         At this time, we are unable to determine the feasibility of our OLED
technology for the commercial viability of any potential applications. We must
make substantial advances in our research and development efforts in a number of
areas including:

         o  reliability;
         o  the development of more fully saturated colors for full color
            displays;
         o  integration with drive electronics; and
         o  issues related to scalability and cost effective fabrication
            technologies for product applications

                                       5


before products utilizing the OLED technology are manufactured and sold. The
development of an electrically pumped laser is also necessary before products
based on the organic laser research are manufactured and sold. Our efforts may
never demonstrate the feasibility of our OLED technology, particularly for use
in full color, large area, high resolution, high information content flat panel
display applications.

         Our research and development efforts remain subject to all of the risks
associated with the development of new products based on emerging and innovative
technologies, including, without limitation, unanticipated technical or other
problems and the possible insufficiency of the funds allocated to complete its
development. Technical problems may result in delays and cause us to incur
additional expenses that would increase our losses. If we cannot complete our
research and development of the OLED technology successfully, or if we
experience delays in completing our research and development of the OLED
technology for use in potential applications, particularly after the occurrence
of significant expenditures, our business may fail.

Even if our technology is technically feasible, it may not be accepted by the
market.

         The potential size, timing and viability of market opportunities
targeted by us are uncertain at this time. Market acceptance of the OLED
technology will depend, in part, upon such technology providing benefits
comparable to CRT and LCD technology (the current standard for display quality)
at an appropriate cost, and its adoption by consumers, neither of which have
been achieved. Many potential licensees of the OLED technology manufacture flat
panel displays utilizing competing technologies and may, therefore, be reluctant
to redesign their products or manufacturing processes to incorporate the OLED
technology. Potential licensees may never utilize the commercially viable OLED
technology.

If our research partners fail to make advances in their research, or if they
terminate their relationship with us, we might not succeed in commercializing
our OLED technology.

         Research and development of commercially viable applications for OLED
technology is dependent on the success of the research efforts of our research
partners conducted under our sponsored research agreement with them. We cannot
assure you that our research partners will make additional advances in the
research and development of the OLED technology.

         Although we fund the OLED technology research, the scope of and
technical aspects of the research as well as the resources and efforts directed
to such research is subject to the control of our research partners. Our
sponsored research agreement provides that if Dr. Forrest is unavailable to
continue to serve as a principal investigator, either because he is no longer
associated with Princeton or otherwise, and a successor acceptable to both us
and Princeton is not available, Princeton has the right to terminate the
sponsored research agreement. The 1997 sponsored research agreement, which
expires in July 2002, may not be extended. The termination or expiration of the
sponsored research agreement or the 1997 license agreement would materially and
adversely affect our ability to research, develop and commercialize our OLED
technology.

If we cannot form strategic licensing relationships with companies that
manufacture and use products that incorporate our OLED technology, our
commercialization strategy will fail.

         Our strategic plan depends upon the development of strategic licensing
relationships with high volume companies that will manufacture and use products
incorporating its OLED technology. We have not yet entered into any such
strategic relationships, although we have entered into:

         o  a Joint Product Development Agreement with Sony Corporation;
         o  a Development and License Agreement with Luxell Technologies Inc.;
            and
         o  a Development and Licensing Agreement with Aixtron AG to develop and
            commercialize a new type of production equipment for OLEDs based
            upon our proprietary technology.

Our agreement with Motorola also includes the opportunity to meet with their
product development group, although there are no assurances that Motorola will
purchase any products from us or our licensees. Our agreements with PPG provide
us with the capability to sell chemicals to our licensees. In December 1999, we

                                       6


moved into a new facility which includes a prototype pilot line and technology
transfer facility to accelerate the development and commercialization of our
technology, We cannot assure you that such a facility will allow us to enter
into such strategic relationships.

         Our prospects will be significantly affected by our ability to
sublicense the OLED technology and successfully develop strategic alliances with
third parties for incorporation of the OLED technology into flat panel displays
manufactured by others. Strategic alliances may require financial or other
commitments by us. We might not be able, for financial or other reasons, to
enter into strategic alliances on commercially acceptable terms, or at all.
Failure to do so would have a material adverse effect on us.

If we cannot protect our intellectual property rights, or if our technology
infringes the rights of others, our business will suffer.

         Our rights to the OLED technology are dependent on patents and other
intellectual property rights relating to the OLED technology that are licensed
to us by Princeton and USC. Forty-seven U.S. patents have already been issued,
approximately 75 additional patent applications are pending in the United States
and many corresponding international patent applications have been filed to
cover major industrial countries. However, there can be no assurance that
additional patents applied for will be obtained or that any such patents will
afford us commercially significant protection of our OLED technology, or will be
found valid if challenged. In connection with our license agreement with
Motorola, Inc., we have obtained a license to 70 additional OLED-related U.S.
patents, 4 patent applications, related foreign patents and applications, and
the right to sublicense this technology.

         The patent laws of other countries may differ from those of the United
States as to the patentability of the OLED technology and the degree of
protection afforded. Older companies and institutions may independently develop
equivalent or superior technologies and may obtain patent or similar rights with
respect thereto. There are a number of other companies and organizations that
have been issued patents and are filing additional patent applications relating
to OLED technology, including Eastman Kodak Corporation, which holds a number of
patents related to OLED technology. There can be no assurance that the exercise
of some aspects of our licensing rights respecting its OLED technology being
developed by Princeton and USC or those licensed from Motorola, Inc. will not
infringe on the patents of others, in which event we or our research partners
may be required to obtain a license, pay damages, modify their products or
method of operation or be prohibited from making, using, selling or offering to
sell some or all products incorporating our OLED technology. We also might not
have the financial or other resources necessary to enforce or defend a patent
infringement action, and the licensors of our licensed technology might not
enforce an action in a timely manner. If products incorporating our OLED
technology are found to infringe upon the patent or other intellectual property
rights of others, it could have a material adverse effect on us.

The federal government has rights to our OLED technology that might prevent us
from realizing its benefits.

         The United States government, through the Defense Advanced Research
Projects Agency, has provided funding to Princeton and us for research
activities related to certain aspects of its OLED technology. The federal
government could obtain rights to this technology, which would affect our rights
as follows:

         o  If all or certain aspects of the OLED technology develop from our
            funding to Princeton, and those aspects are deemed to fall within
            the planned and committed activities of DARPA's funding, the federal
            government, pursuant to federal law, could have certain rights
            relating to the OLED technology.

         o  If the federal government determines that we have not taken
            effective steps to achieve practical application of such technology
            in a field of use in a reasonable time, it may require us to grant
            licenses to other parties in any such field of use.

         o  The federal government could restrict our ability to market the OLED
            technology to the federal government for military and other
            applications.

                                       7


         o  The federal government's continued funding of ours and Princeton's
            research activities may also give it rights to aspects of the OLED
            technology developed in the future.

If so, we might not realize the benefits of that technology.

Because many of our competitors have better name-recognition, and greater
financial, technical, marketing and research capabilities than us, we may never
be able to compete successfully in the flat panel display industry.

         The flat panel display industry is characterized by intense
competition. The market is currently, and will likely continue to be, dominated
by products utilizing LCD technology. Numerous companies are making substantial
investments in, and conducting research to improve characteristics of, LCD
technology. Several other flat panel display technologies have been, or are
being, developed, including field emission, inorganic electroluminescence,
polymeric light emitting diode, gas plasma and vacuum fluorescent displays. In
addition, other companies are engaged in research and development activities
with respect to technology using OLEDs. Advances in LCD technology or any of
these developing technologies may overcome their limitations or become the
leading technology for flat panel displays, either of which could limit the
potential market for flat panel displays utilizing the Company's OLED
technology.

         Substantially all of these competitors have better name recognition and
greater financial, technical, marketing, personnel and research capabilities
than us. Our competitors may succeed in developing technologies and applications
that are more cost-effective or have fewer display limitations than our OLED
technology. We may never be able to compete successfully or develop commercial
applications for our OLED technology.

If we cannot keep our key employees or hire other talented persons as we grow,
our business might not succeed.

         Our performance is substantially dependent on the continued services of
senior management and other key personnel, and its ability to offer competitive
salaries and benefits to its employees. We do not have employment agreements
with any of our management or key personnel. Additionally, competition for
highly skilled technical, managerial and other personnel is intense. We might
not be able to attract, hire, train, retain and motivate the highly skilled
managers and employees we need to be successful. If we fail to attract and
retain the necessary technical and managerial personnel, we will suffer and
might fail.

We can issue shares of preferred stock that can adversely affect your rights as
a shareholder.

         Our articles of incorporation authorize us to issue up to 5,000,000
shares of preferred stock with designations, rights and preferences determined
from time-to-time by our board of directors. Accordingly, our board is
empowered, without shareholder approval, to issue preferred stock with dividend,
liquidation, conversion, voting or other rights superior to those of our common
shareholders. For example, an issuance of shares of preferred stock could:

         o  adversely affect the voting power of the common shareholders;
         o  make it more difficult for a third party to gain control of us;
         o  discourage bids for our common stock at a premium; or
         o  otherwise adversely affect the market price of the common stock.

Our board has designated and issued: (a) 200,000 shares of Series A Preferred
Stock, all of which are held by an entity controlled by Sherwin Seligsohn; (b)
300,000 shares of Series B Convertible Preferred Stock; and (c) 5,000 shares of
Series C Convertible Preferred Stock, all of which shares are convertible into
shares of our common stock in accordance with our articles of incorporation. In
addition, following the effective date of this Registration Statement, we intend
to designate 5,000 shares of preferred stock as Series D Convertible Preferred
Stock that will be convertible into shares of our common stock. See the risk
factor under the heading "This offering, as well as the issuance of other
publicly traded shares, could drive our stock price down" for more information
regarding the Series C and Series D Convertible Preferred Stock. We may issue
additional shares of our authorized preferred stock at any time in the future.

                                       8


The market price of our common stock might be highly volatile.

         The market price of our common stock might be highly volatile, as has
been the case with the securities of other emerging growth companies. Factors
such as:

         o  our operating results;
         o  announcements by us or our competitors of technological
            developments, new product applications or license arrangements; and
         o  other factors affecting the flat panel display industry generally
            may have a significant impact on the market price of our common
            stock.

In recent years, the stock market has experienced a high level of price and
volume volatility and market prices for the stock of many companies,
particularly small and emerging-growth companies.

If our shares are delisted, you might not be able to sell your investment in our
company.

         Our common stock is listed on the Nasdaq National Market System. To
continue to be listed on that market, however, we must maintain, with certain
exceptions, maintenance criteria, including:

         o  specified levels for total assets;
         o  market value of the public float;
         o  total capital and surplus; and
         o  a minimum bid price per share.

The failure to meet such maintenance criteria in the future may result in the
delisting of our common stock from the Nasdaq National Market System.
Thereafter, trading, if any, in our common stock would be conducted in the
non-Nasdaq over-the-counter market. As a result of such delisting, you could
find it more difficult to dispose of, or to obtain accurate quotations as to the
market value of, our common stock.

If our shares are delisted, trading in our common stock may become subject to
additional regulation that could further limit the liquidity of your investment.

         If our common stock were to become delisted from trading on Nasdaq and
the trading price of the common stock were to remain below $5.00 per share,
trading in the common stock would also be subject to the requirements of
additional rules under the Exchange Act. These rules require additional
disclosure by broker-dealers in connection with any trades involving any
non-Nasdaq equity security that has a market price of less than $5.00 per share,
subject to certain exceptions. Such rules require the delivery, prior to any
so-called penny stock transaction, of a disclosure schedule explaining the penny
stock market and the risks associated with it, and impose various sales practice
requirements on broker-dealers who sell penny stocks to persons other than
established customers and accredited investors. For these types of transactions,
the broker-dealer must make a special suitability determination for the
purchaser and have received the purchaser's written consent to the transaction
prior to sale. The broker-dealer also must disclose the commissions payable to
the broker-dealer, current bid and offer quotations for the penny stock and, if
the broker-dealer is the sole market-maker, the broker-dealer must disclose this
fact and the broker-dealer's presumed control over the market. Such information
must be provided to the customer orally or in writing prior to effecting the
transaction and in writing before or with the customer confirmation. Monthly
statements must be sent disclosing recent price information for the penny stock
held in the account and information on the limited market in penny stocks. The
additional burdens imposed upon broker-dealers by such requirements may
discourage broker-dealers from effecting transactions in our common stock, which
could severely limit the market liquidity of your investment.

                                       9


This offering, as well as the issuance of other publicly traded shares, could
drive our stock price down.

         On August 22, 2001, we completed a private placement transaction in
which we sold shares of our convertible preferred stock, three-year convertible
promissory notes and warrants to purchase shares of our common stock to two of
the selling shareholders, Pine Ridge Financial Inc. and Strong River
Investments, Inc. In addition, Pine Ridge and Strong River agreed to purchase
additional shares of convertible preferred stock from us. As part of that
transaction, we are currently registering for resale the shares issuable upon
the conversion of the preferred stock (including the preferred stock that we
have not yet sold) and the exercise of the warrants. Sales of substantial
amounts of common stock in the public market as a result of this offering could
reduce the market price of our common stock and make it more difficult for us
and our shareholders to sell our equity securities in the future. Following the
effectiveness of this Registration Statement, the 2,580,338 shares of common
stock offered by the selling shareholders will become freely salable in the
public market. This includes 452,660 shares that may be issuab1e upon the
conversion of outstanding shares of our Series C Convertible Preferred Stock,
452,660 shares that we estimate may be issuable upon the conversion of shares of
Series D Convertible Preferred Stock to be sold by us after the effectiveness of
this Registration Statement, 930,566 shares that may be issuable upon the
exercise of outstanding warrants, and an additional 744,452 shares that may be
issuable upon the conversion of the Series C Convertible Preferred Stock and
Series D Convertible Preferred Stock or the exercise of the warrants granted to
Pine Ridge and Strong River, if adjustments are made to the conversion or
exercise prices of such preferred stock or warrants. The number of shares
offered by the selling shareholders includes substantially more than the number
of shares to which they are currently eligible to receive upon the conversion of
the preferred stock and the exercise of the warrants. We are registering for
resale more shares than are currently issuable under the preferred stock and
warrants pursuant to contractual obligations with certain selling shareholders
and to ensure that a sufficient number of shares is registered in the event that
adjustments, if any, are made to the conversion or exercise prices of the
preferred stock or warrants. See "THE OFFERING" on page 12. Material terms of
the preferred stock and warrants are explained below.

         Series C Convertible Preferred Stock

         We issued 5,000 shares of our Series C Convertible Preferred Stock in
the private placement transaction completed on August 22, 2001. Holders of
Series C Stock are not entitled to voting rights except as otherwise required by
law. Each share of Series C Stock has an initial stated value of $1,000, which
increases by $4.16 for each month that such share is outstanding.

          The number of shares of our common stock issuable upon conversion of a
share of Series C Stock equals the quotient obtained by dividing the stated
value of one share of Series C Stock by the then-applicable conversion price
thereof. The initial conversion price of the Series C Stock is $12.70, which may
change in the future based on certain anti-dilution and other adjustments
explained below. Holders of the Series C Stock may convert their shares at any
time until August 21, 2004. All shares of Series C Stock will automatically
convert into shares of common stock on the third anniversary of the date of
issuance thereof, unless we are in default of a material provision of an
agreement entered into or security issued as part of the August 22, 2001 private
placement transaction, in which case the Series C Stockholder may require us to
repurchase the Series C Stock for an amount equal to its aggregate stated value.
The Series C Stock cannot be converted, however, to the extent that such
conversion would result in a Series C Stockholder owning, together with its
affiliates, more than 9.999% of our common stock then outstanding.

         Series D Convertible Preferred Stock

         If the conditions described below are met, on the 30th trading day
after this Registration Statement is declared effective by the SEC, Pine Ridge
and Strong River will purchase an aggregate of 5,000 shares of a new series of
our preferred stock, which will be called Series D Convertible Preferred Stock.
None of the conditions to the sale of the Series D Stock are within the control
of either Pine Ridge or Strong River.

         In the event, however, that any of the following conditions has not
been satisfied or waived by Pine Ridge or Strong River on or before the closing
date of the sale of the Series D Stock, then Pine Ridge and Strong River, as
applicable, will not be obligated to purchase any shares of Series D Stock:

                                       10


         o  No change of control of the Company shall have occurred since August
            22, 2001;
         o  If any shares of Series C Stock or convertible promissory notes sold
            in the August 22, 2001 private placement had been converted, or if
            any warrants granted to the investors in the August 22, 2001 private
            placement had been exercised, we must have timely delivered any
            shares of common stock issuable thereunder;
         o  We must have filed an amendment to our articles of incorporation
            designating the rights and preferences of the Series D Stock; and
         o  We will not need to obtain approval from our shareholders in order
            to issue the aggregate number of shares of common stock issuable
            upon the conversion of our Series C Stock, Series D Stock and
            convertible promissory notes and upon the exercise of the warrants
            that were issued and sold in the August 22, 2001 private placement.

         In addition, we have the right to choose not to sell the Series D Stock
if the average of the volume weighted average prices (the "VWAP") of our common
stock for the 18 trading days immediately prior to the 10th trading day after
the effective date of this Registration Statement is less than $12.00. Pine
Ridge and Strong River may elect to not purchase the Series D Stock if this
Registration Statement has not been declared effective by the SEC by December
12, 2001.

         The initial conversion price of the Series D Stock will equal the
average of the VWAP of our common stock for the 36 trading days commencing on
the 8th trading day prior to the effective date of this Registration Statement.
The initial conversion price of the Series D Stock may change in the future
based on certain anti-dilution and other adjustments explained below. Holders of
Series D Stock will not be entitled to voting rights except as otherwise
required by law. Each share of Series D Stock will have a stated value of
$1,000, which will increase by $4.16 for each month that such share is
outstanding. Holders of the Series D Stock may convert their shares at any time
until August 21, 2004. In addition, all shares of Series D Stock will
automatically convert into shares of common stock on the third anniversary of
the date of issuance thereof, unless we are in default of a material provision
of an agreement entered into or security issued as part of the August 22, 2001
private placement transaction, in which case the Series D Stockholder may
require us to repurchase the Series D Stock for an amount equal to its stated
value. The Series D Stock cannot be converted, however, to the extent that such
conversion would result in a Series D Stockholder owning, together with its
affiliates, more than 9.999% of our common stock then outstanding.

         Warrants

         o Warrants to purchase 744,452 shares of our common stock have an
exercise price of $15.24 per share, which may change in the future based on
certain anti-dilution and other adjustments explained below, and expire on
August 21, 2006. These warrants were granted as part of a private placement
transaction undertaken for capital raising purposes. Of these warrants, warrants
to purchase 157,480 shares of common stock are exercisable commencing on the
earlier of (x) the closing of the sale of the Series D Stock or (y) August 22,
2004. The remaining warrants to purchase 586,972 shares of common stock are
exercisable immediately. However, the warrants may not be exercised to the
extent that a holder thereof would then own, together with its affiliates, more
than 4.99% of our common stock then outstanding. A warrant holder may waive the
4.99% limitation on ownership by giving us 61 days' prior written notice. In no
event, however, can the warrants be exercised to the extent that Pine Ridge or
Strong River would then own, together with its respective affiliates, more than
9.999% of the shares of our common stock then outstanding.

         o Warrants to purchase 186,114 shares of our common stock have an
exercise price of $15.24 per share, which may change in the future based on
certain anti-dilution and other adjustments explained below, and expire on
August 21, 2008. These warrants were granted as placement agent fees.

         Adjustment Features of Conversion and Exercise Prices

         If we sell stock at a price per share that is below either the
then-applicable conversion price of the preferred stock or convertible notes, or
below the exercise price of the warrants issued in the August 22, 2001 private
placement transaction, then the conversion or exercise price, as applicable, of
these shares of preferred stock, notes and warrants may adjust downward. The
number of additional shares of common stock to which the holders of these

                                       11


securities would be entitled depends on the price at which we sell our stock. In
addition, if we require a holder of a convertible promissory note to convert
more than $1.5 million of the principal amount of its note, then the exercise
price of warrants to purchase 429,492 shares may be reduced to equal 110% of the
then-applicable conversion price of the relevant note. Finally, if we require
the conversion of the promissory notes, the conversion price of the notes will
be reduced to the lower of (x) the then-applicable conversion price or (y) an
amount equal to 87% of the average of the VWAP for the 12 consecutive trading
days ending on the last trading day immediately prior to the date on which such
conversion is effectuated (subject to a floor equal to the product of (A) .87
and (B) 90% of the VWAP on the date on which we notified the holder of our
election to require conversion of the notes). As a result of the foregoing, we
may be required to issue more shares of common stock upon the conversion and
exercise of the securities issued or issuable as part of the August 22, 2001
private placement transaction.

         If the price of our common stock decreased substantially and we sold
shares at a price lower than the conversion or exercise prices of the securities
issued or issuable as part of the August 22, 2001 private placement, the
issuance of a greater number of shares under those securities could have an
effect on the control of our company. However, these securities cannot be
converted or exercised to the extent that Pine Ridge or Strong River would then
own, together with its respective affiliates, more than 9.999% of the shares of
our common stock then outstanding.

         Although the sale of these additional shares to the public might
increase the liquidity of our shareholders' investments, the increase in the
number of shares available for public sale could drive the price of our common
stock down, thus reducing the value of your investment and perhaps hindering our
ability to raise additional funds in the future. In addition, to the extent
other restricted shares become freely salable, whether through an effective
registration statement or under Rule 144 of the Securities Act, or we issue
additional shares that might be or become freely salable, you could expect our
stock price to decrease.

If our stock price goes down, we may have to issue more shares than we
anticipate under the terms of a license and development agreement.

         Pursuant to the development and license agreement we entered into with
PPG Industries, Inc., we are required to issue to PPG, for the services they
expect to render to us during a particular calendar year during the term of the
agreement, shares of common stock based on the value of such services at the
beginning of the year. If, at the time of issuance, the price of our common
stock has declined materially since the date we executed the agreement with PPG,
we may be required to issue to PPG more shares of common stock than we initially
anticipated. This increase in the number of shares available for public sale
could cause people to sell our shares, including in short sales, which could
drive the price of our common stock down, thus reducing the value of your
investment and perhaps hindering our ability to raise additional funds in the
future. In addition, this increase in the number of shares outstanding would
further dilute our existing stockholders.

Our executive officers and directors own a large percentage of our voting stock
and could exert significant influence over matters requiring shareholder
approval after this offering, including takeover attempts.

         Our executive officers and directors, and their respective affiliates,
own as of September 17, 2001 approximately 12.3% of our outstanding common
stock. Moreover, Pine Ridge Financial Inc. and Strong River Investments, Inc.
assigned to management of the Company their rights to vote the shares of common
stock issuable upon the conversion of the preferred stock, notes and warrants
issued or to be issued to them in a August 22, 2001 private placement
transaction. Accordingly, these shareholders and members of management may, as a
practical matter, be able to exert significant influence over matters requiring
approval by our shareholders, including the election of directors and the
approval of mergers or other business combinations. This concentration could
also have the effect of delaying or preventing a change of control.

                                  THE OFFERING

         The 2,580,338 shares of our common stock being offered by the selling
shareholders. These shares consist of the following shares:

                                       12


         o  452,660 shares of common stock that may be issuable upon the
            conversion of the Series C Stock;
         o  452,660 shares of common stock that we estimate may be issuable upon
            the conversion of the Series D Stock;
         o  930,566 shares of common stock that may be issuable upon the
            exercise of outstanding warrants; and
         o  744,452 shares that may be issuable upon the conversion of the
            Series C Stock and Series D Stock or the exercise of warrants
            granted to Pine Ridge and Strong River, if adjustments are made to
            the conversion or exercise prices of such preferred stock or
            warrants.

         We previously issued the shares of Series C Stock and warrants in a
private placement transaction on August 22, 2001. Pursuant to the terms of the
private placement, if certain conditions are met, two of the selling
shareholders, Pine Ridge and Strong River, are obligated to purchase shares of
Series D Stock after the effective date of this Registration Statement.

         Of the 2,580,338 shares of our common stock being offered by the
selling shareholders, Pine Ridge and Strong River are offering an aggregate of
2,394,224 shares. The number of shares offered by Pine River and Strong River,
however, includes substantially more than the number of shares currently
issuable to Pine Ridge and Strong River upon: (a) the conversion of shares of
Series C Stock; (b) the conversion of shares of Series D Stock; and (c) the
exercise of the warrants. We are registering more than the number of shares
currently issuable under the Series C Stock, Series D Stock and warrants
pursuant to our contractual obligations with Pine Ridge and Strong River. Pine
Ridge and Strong River may receive more shares than they are currently entitled
to receive upon conversion of the Series C Stock and Series D Stock and upon
exercise of the warrants because the conversion price of the Series C Stock and
the Series D Stock and the exercise price of the warrants are subject to
anti-dilution and other adjustments. In addition, the number of shares issuable
upon conversion of the Series D Stock cannot be determined as of the date hereof
because the initial conversion price of the Series D Stock is based in part on
the VWAP of our common stock after the effective date of this Registration
Statement.

         The selling shareholders pursuant to this prospectus may sell the
shares of common stock offered for resale in a secondary offering. Under the
terms of the transactions described above, we are contractually required to
register all of the shares of common stock that are described above.


                                 USE OF PROCEEDS

         The selling shareholders will receive the proceeds from the resale of
the shares of common stock. We will not receive any proceeds from the resale of
the shares of common stock by the selling shareholders.


                                       13


                              SELLING SHAREHOLDERS

         The following table sets forth information regarding the beneficial
ownership of shares of common stock by the selling shareholders as of September
17, 2001, and the number of shares of common stock covered by this prospectus.
Beneficial ownership is determined in accordance with the rules of the SEC and
generally includes voting or investment power with respect to securities. The
shares of common stock issuable upon (i) conversion of preferred stock, (ii)
conversion of convertible notes, or (iii) exercise of warrants, currently
convertible or exercisable within 60 days after September 17, 2001, are deemed
outstanding and to be beneficially owned by the selling shareholders holding
such preferred stock, convertible notes or warrants. However, Pine Ridge
Financial, Inc. and Strong River Investments, Inc. are prohibited from using any
shares of preferred stock, convertible notes or warrants to acquire shares of
common stock to the extent that such acquisition would result in Pine Ridge
and/or Strong River, together with any of their respective affiliates,
beneficially owning in excess of 9.999% of our common stock outstanding after
such acquisition. Except as otherwise noted below, none of the selling
stockholders has held any position or office, or has had any other material
relationship with us or any of our affiliates within the past three years.

         The percentage of ownership for each selling shareholder disclosed in
this table is based on 17,047,080 shares of common stock outstanding as of
September 17, 2001, plus any common stock equivalents held by that holder. Both
the number of shares listed as being offered by the selling shareholders in the
table and the holders' respective percentages of share ownership after the
offering are based on the assumptions that all of the shares being offered are
sold pursuant to this offering, and that no other shares of common stock are
acquired or disposed of by the selling shareholders prior to the termination of
this offering. Because the selling shareholders may sell all, some or none of
their shares or may acquire or dispose of other shares of common stock, we
cannot estimate the aggregate number of shares that will be sold in this
offering or the number or percentage of shares of common stock that each selling
shareholder will own upon completion of this offering.



                                                    Beneficial Ownership Prior to                    Beneficial Ownership After
                                                          Resale of Shares                                Resale of Shares
                                                   --------------------------------                  --------------------------
                                                                                       Number of
                     Name of                         Number of                       Shares Being      Number of
               Selling Shareholder                     Shares          Percent          Offered          Shares        Percent
               -------------------                   ---------         -------       ------------      ---------       -------
                                                                                                          
Gerard Klauer Mattison & Co., Inc.                   186,114(1)         1.1%          186,114(1)              0          0.0%
Pine Ridge Financial Inc. (2)                      1,867,853(3)         9.9%        1,197,112(4,5)    1,308,430(9)       6.7%
Strong River Investments, Inc. (2)                 1,867,853(6)         9.9%        1,197,112(7,8)    1,308,430(9)       6.7%
                                                   ---------                        ---------
Totals                                                                              2,580,338


-------------
(1) Represents shares issuable upon the exercise of warrants.

(2) Pine Ridge and Strong River are deemed to be affiliates.

(3) Includes: (a) 452,660 shares that may be issuable upon the conversion of
    shares of Series C Stock (226,330 to each of Pine Ridge and Strong River);
    (b) 744,452 shares that may be issuable upon the exercise of warrants
    (372,226 to each of Pine Ridge and Strong River); (c) 1,073,730 shares that
    may be issuable upon the conversion of convertible promissory notes (536,865
    to each of Pine Ridge and Strong River); and (d) 452,660 shares that for the
    purposes of this table we estimate may be issuable upon the conversion of
    shares of Series D Stock (226,330 to each of Pine Ridge and Strong River).
    Also includes 234,700 shares owned by Strong River. However, Pine Ridge is
    not currently deemed to be the beneficial owner of all the shares described

                                       14


    above because it cannot convert its promissory notes or shares of Series C
    Stock or Series D Stock, nor may it exercise its warrants to the extent that
    it would then own, together with its affiliates, more than 9.999% of the
    shares of our common stock then outstanding.

(4) The number of shares offered by Pine Ridge includes substantially more than
    the number of shares currently issuable to Pine Ridge upon: (a) the
    conversion of shares of Series C Stock; (b) the conversion of shares of
    Series D Stock, on an estimated basis; and (c) the exercise of the warrants.
    We are registering more than the number of shares issuable under the Series
    C Stock, Series D Stock and warrants pursuant to our contractual obligations
    with Pine Ridge to ensure that a sufficient number of shares is registered
    for resale. Pine Ridge may receive more shares than it is currently entitled
    to receive upon conversion of the Series C Stock and Series D Stock and upon
    exercise of the warrants because the conversion price of the Series C Stock
    and the Series D Stock and the exercise price of the warrants are subject to
    anti-dilution and other adjustments. In addition, the number of shares
    issuable upon conversion of the Series D Stock cannot be determined as of
    the date hereof because the initial conversion price of the Series D Stock
    is based in part on the VWAP of our common stock after the effective date of
    this Registration Statement.

(5) Does not include any shares offered by Strong River.

(6) Includes: (a) 452,660 shares that may be issuable upon the conversion of
    shares of Series C Stock (226,330 to each of Pine Ridge and Strong River);
    (b) 744,452 shares that may be issuable upon the exercise of warrants
    (372,226 to each of Pine Ridge and Strong River); (c) 1,073,730 shares that
    may be issuable upon the conversion of convertible promissory notes (536,865
    to each of Pine Ridge and Strong River); and (d) 452,660 shares that for the
    purposes of this table we estimate may be issuable upon the conversion of
    shares of Series D Stock (226,330 to each of Pine Ridge and Strong River).
    Also includes 234,700 shares owned by Strong River. However, Strong River is
    not currently deemed to be the beneficial owner of all the shares described
    above because it cannot convert its promissory notes or shares of Series C
    Stock or Series D Stock, nor may it exercise its warrants to the extent that
    it would then own, together with its affiliates, more than 9.999% of the
    shares of our common stock then outstanding.

(7) The number of shares offered by Strong River includes substantially more
    than the number of shares currently issuable to Strong River upon: (a) the
    conversion of shares of Series C Stock; (b) the conversion of shares of
    Series D Stock, on an estimated basis; and (c) the exercise of the warrants.
    We are registering more than the number of shares issuable under the Series
    C Stock, Series D Stock and warrants pursuant to our contractual obligations
    with Strong River to ensure that a sufficient number of shares is registered
    for resale. Strong River may receive more shares than it is currently
    entitled to receive upon conversion of the Series C Stock and Series D Stock
    and upon exercise of the warrants because the conversion price of the Series
    C Stock and the Series D Stock and the exercise price of the warrants are
    subject to anti-dilution and other adjustments. In addition, the number of
    shares issuable upon conversion of the Series D Stock cannot be determined
    as of the date hereof because the initial conversion price of the Series D
    Stock is based in part on the VWAP of our common stock after the effective
    date of this Registration Statement.

(8) Does not include any shares offered by Pine Ridge.

(9) Includes (a) 1,073,730 shares that may be issuable upon the conversion of
    convertible promissory notes (536,865 to each of Pine Ridge and Strong
    River) and (b) 234,700 shares owned by Strong River.

                              PLAN OF DISTRIBUTION

         The selling shareholders and any of their pledgees, assignees and
successors-in-interest may, from time to time, sell any or all of their shares
of common stock on any stock exchange, market or trading facility on which the
shares are traded or in private transactions. These sales may be at fixed or
negotiated prices. The selling shareholders may use any one or more of the
following methods when selling shares:

                                       15


o        ordinary brokerage transactions and transactions in which the
         broker-dealer solicits purchasers;

o        block trades in which the broker-dealer will attempt to sell the shares
         as agent but may position and resell a portion of the block as
         principal to facilitate the transaction;

o        purchases by a broker-dealer as principal and resale by the
         broker-dealer for its account;

o        an exchange distribution in accordance with the rules of the applicable
         exchange;

o        privately negotiated transactions;

o        to cover short sales effected after the date hereof;

o        broker-dealers may agree with the selling shareholders to sell a
         specified number of such shares at a stipulated price per share; and

o        any combination of any of the above methods.

         The selling shareholders may also sell shares under Rule 144 under the
Securities Act of 1933, if available, rather than under this prospectus.

         The selling shareholders may also engage in short sales against the
box, puts and calls and other transactions in our securities or derivatives of
our securities and may sell or deliver shares in connection with these trades.
The selling shareholders may pledge their shares to their brokers under the
margin provisions of customer agreements. If a selling shareholder defaults on a
margin loan, the broker may, from time to time, offer and sell the pledged
shares.

         Broker-dealers engaged by the selling shareholders may arrange for
other brokers-dealers to participate in sales. Broker-dealers may receive
commissions or discounts from the selling shareholders (or, if any broker-dealer
acts as agent for the purchaser of shares, from the purchaser) in amounts to be
negotiated. The selling shareholders do not expect these commissions and
discounts to exceed what is customary in the types of transactions involved.

         The selling shareholders and any broker-dealers or agents that are
involved in selling the shares may be deemed to be "underwriters" within the
meaning of the Securities Act in connection with such sales. In such event, any
commissions received by such broker-dealers or agents and any profit on the
resale of the shares purchased by them may be deemed to be underwriting
commissions or discounts under the Securities Act.

         The selling shareholders will be subject to prospectus delivery
requirements of the Securities Act. We have informed the selling shareholders
that the anti-manipulative provisions of Regulation M promulgated under the
Securities Exchange Act of 1934 may apply to their sales in the market.

         We are required to pay all fees and expenses incident to the
registration of the shares, including fees and disbursements of counsel to the
selling shareholders, up to $25,000. We have agreed to indemnify the selling
shareholders against certain losses, claims, damages and liabilities, including
liabilities under the Securities Act. Brokerage commissions and similar selling
expenses, if any, attributable to the sale of shares by the selling shareholders
will be borne by the selling shareholders. The selling shareholders may agree to
indemnify brokers, dealers or agents that participate in sales by the selling
shareholders against certain losses, claims, damages and liabilities, including
liabilities under the Securities Act.

                              ABOUT THIS PROSPECTUS

         You should only rely on the information contained in this prospectus.
We have not authorized anyone to provide you with information different from
that contained in this prospectus. The information contained in this prospectus

                                       16


is accurate only as of the date of this prospectus, regardless of the time of
delivery of this prospectus or of any sale of common stock.

                       WHERE YOU CAN FIND MORE INFORMATION

         We file annual, quarterly and current reports, proxy statements and
other information with the Securities and Exchange Commission. You may read and
copy any reports, statements or other information we file at the SEC's public
reference rooms located at Judiciary Plaza, 450 Fifth Street, N.W., Washington,
D.C. 20549, Citicorp Center, 500 West Madison Street, Suite 1400, Chicago, IL
60661 and 7 World Trade Center, Suite 1300, New York, NY 10048. Please call the
SEC at 1-800-SEC-0330 for further information on the public reference rooms. Our
SEC filings are also available to the public from commercial document retrieval
services and at the web site maintained by the SEC at "http://www.sec.gov."

         We have filed a Registration Statement on Form S-3, of which this
prospectus forms a part, to register the resale of the shares with the SEC. As
allowed by SEC rules, this prospectus does not contain all the information you
can find in the Registration Statement or the exhibits to the Registration
Statement.

     The SEC allows us to "incorporate by reference" information into this
prospectus, which means that we can disclose important information to you by
referring you to another document filed separately with the SEC. The information
incorporated by reference is deemed to be part of this prospectus, except for
any information superseded by information in this prospectus. This prospectus
incorporates by reference the documents set forth below that we have previously
filed with the SEC. These documents contain important information about us, our
business and our finances.

         The documents that we are incorporating by reference are:

         X  Our Annual Report on Form 10-K for the year ended December 31, 2000;
         X  Our Quarterly Reports on Form 10-Q for the quarters ended March 31,
            2001 and June 30, 2001;
         X  Our Current Report on Form 8-K filed with the SEC on March 19, 2001,
            as amended on March 21, 2001;
         X  Our Current Report on Form 8-K filed with the SEC on September 6,
            2001; and
         X  The description of our common stock that is contained in our
            Registration Statement on Form SB-2 filed with the SEC on June 30,
            1999, as amended August 25, 1999.

         Any documents which we file pursuant to Sections 13(a), 13(c), 14 or
15(d) of the Exchange Act after the date of this prospectus but before the end
of any offering of securities made under this prospectus will also be considered
to be incorporated by reference.

         If you request, either orally or in writing, we will provide you with a
copy of any or all documents which are incorporated by reference. We will
provide such documents to you free of charge, but will not include any exhibits,
unless those exhibits are incorporated by reference into the document. You
should address written requests for documents to Sidney D. Rosenblatt, Executive
Vice President, Chief Financial Officer, Treasurer and Secretary, Universal
Display Corporation, 375 Phillips Boulevard, Ewing, New Jersey 08618.

                                  LEGAL OPINION

     Morgan, Lewis & Bockius LLP, Philadelphia, Pennsylvania, will pass on the
validity of the shares.

                                     EXPERTS

         The audited financial statements incorporated by reference in this
prospectus and elsewhere in this Registration Statement, to the extent and for
the periods indicated in their reports, have been audited by Arthur Andersen
LLP, independent public accountants, and are included herein in reliance upon
the authority of said firm as experts in giving said reports.

                                       17


===============================================================================












                                2,580,338 Shares



                          UNIVERSAL DISPLAY CORPORATION







                                  Common Stock



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

                                   PROSPECTUS

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









                                __________, 2001












===============================================================================


                                     PART II
                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14. Other Expenses of Issuance and Distribution

         The estimated expenses payable by the Registrant in connection
with the issuance and distribution of the securities being registered are as
follows:

         SEC Registration fee                       $ 5,093
         Transfer agent and registrar fees          $ 1,500
         Printing and engraving fees                $ 5,000
         Legal fees                                 $15,000
         Blue Sky fees and expenses                 $ 5,000
         Accounting fees                            $ 5,000
         Miscellaneous                              $ 5,000
                                                    -------
         Total                                      $41,593

The selling shareholders described in the prospectus included herewith will not
pay any of the expenses of this offering.

Item 15. Indemnification of Directors and Officers

         Chapter 17, Subchapter D of the Pennsylvania Business Corporation Law
of 1988, as amended (the "PBCL") contains provisions permitting indemnification
of officers and directors of a business corporation in Pennsylvania.

         Sections 1741 and 1742 of the PBCL provide that a business corporation
may indemnify directors and officers against liabilities and expenses they may
incur as such in connection with any threatened, pending or completed civil,
administrative or investigative proceeding, provided that the particular person
acted in good faith and in a manner he or she reasonably believed to be in, or
not opposed to, the best interests of the corporation, and, with respect to any
criminal proceeding, had no reasonable cause to believe his or her conduct was
unlawful. In general, the power to indemnify under these sections does not exist
in the case of actions against a director or officer by or in the right of the
corporation if the person otherwise entitled to indemnification shall have been
adjudged to be liable to the corporation unless it is judicially determined
that, despite the adjudication of liability but in view of all the circumstances
of the case, the person is fairly and reasonably entitled to indemnification for
specified expenses.

         Section 1743 of the PBCL provides that the corporation is required to
indemnify directors and officers against expenses they may incur in defending
actions against them in such capacities if they are successful on the merits or
otherwise in the defense of such actions.

         Section 1746 of the PBCL grants a corporation broad authority to
indemnify its directors and officers for liabilities and expenses incurred in
such capacity, except in circumstances where the act or failure to act giving
rise to the claim for indemnification is determined by a court to have
constituted willful misconduct or recklessness.

         Section 1747 of the PBCL permits a corporation to purchase and maintain
insurance on behalf of any person who is or was a director or officer of the
corporation, or is or was serving at the request of the corporation as a
representative of another corporation or other enterprise, against any liability
asserted against such person and incurred by him or her in any such capacity, or
arising out of his or her status as such, whether or not the corporation would
have the power to indemnify the person against such liability under Chapter 17
Subchapter D of the PBCL.

         The Registrant's Bylaws provide a right to indemnification to the full
extent permitted by law, for expenses (including attorney `s fees), damages,
punitive damages, judgments, penalties, fines and amounts paid in settlement,
actually and reasonably incurred by any director or officer whether or not the

                                      II-1


indemnified liability arises or arose from any threatened, pending or completed
proceeding by or in the right of the Registrant (a derivative action) by reason
of the fact that such director or officer is or was serving as a director,
officer, employee or agent of the Registrant or, at the request of the
Registrant, as a director, officer, partner, fiduciary or trustee of another
corporation, partnership, joint venture, trust, employee benefit plan or other
enterprise, unless the act or failure to act giving rise to the claim for
indemnification is financially determined by a court to have constituted willful
misconduct or recklessness. The Bylaws provide for the advancement of expenses
to an indemnified party upon receipt of an undertaking by the party to repay
those amounts if it is finally determined that the indemnified party is not
entitled to indemnification.

         The Registrant's Bylaws authorize the Registrant to take steps to
ensure that all persons entitled to indemnification are properly indemnified,
including, if the Board of Directors so determines, purchasing and maintaining
insurance.

Item 16. List of Exhibits

The exhibits filed as part of this Registration Statement are as follows:

Exhibit
Number            Description
-------           -----------

Exhibit Number                         Exhibit Title
--------------                         -------------

4.1            Statement of Designations, Preferences and Rights of Series C
               Convertible Preferred Stock (1)
4.2            Revised Form of Terms of Series D Convertible Preferred Stock (2)
4.3            Convertible Promissory Note dated as of August 22, 2001 payable
               to the order of Pine Ridge Financial Inc. (1)
4.4            Convertible Promissory Note dated as of August 22, 2001 payable
               to the order of Strong River Investments, Inc. (1)
4.5            Warrant of Pine Ridge Financial Inc. to Purchase 78,740 Shares of
               Common Stock dated as of August 22, 2001 (1)
4.6            Warrant of Pine Ridge Financial Inc. to Purchase 78,740 Shares of
               Common Stock dated as of August 22, 2001 (1)
4.7            Warrant of Pine Ridge Financial Inc. to Purchase 214,746 Shares
               of Common Stock dated as of August 22, 2001 (1)
4.8            Warrant of Strong River Investments, Inc. to Purchase 78,740
               Shares of Common Stock dated as of August 22, 2001 (1)
4.9            Warrant of Strong River Investments, Inc. to Purchase 78,740
               Shares of Common Stock dated as of August 22, 2001 (1)
4.10           Warrant of Strong River Investments, Inc. to Purchase 214,746
               Shares of Common Stock dated as of August 22, 2001 (1)
4.11           Warrant of Gerard Klauer Mattison & Co., Inc. to Purchase 186,114
               Shares of Common Stock dated as of August 22, 2001 (1)
5.1            Opinion of Morgan, Lewis & Bockius LLP (2)
10.1           Securities Purchase Agreement dated as of August 22, 2001 among
               the Company, Pine Ridge Financial Inc. and Strong River
               Investments, Inc. (1)
10.2           Registration Rights Agreement dated as of August 21, 2001 among
               the Company, Pine Ridge Financial Inc. and Strong River
               Investments, Inc. (1)
10.3           Voting Agreement dated as of August 21, 2001 among the Company,
               Pine Ridge Financial Inc. and Strong River Investments, Inc. (1)
10.4           Pledge Agreement dated as of August 22, 2001 by UDC, Inc. in
               favor of First Union National Bank (1)
10.5           Control Agreement dated as of August 22, 2001 among First Union
               National Bank, in its capacity as the issuer of two standby
               letters of credit, UDC, Inc. and First Union National Bank, in
               its capacity as custodian (1)


                                      II-2


Exhibit Number                         Exhibit Title
--------------                         -------------

10.6           Guaranty and Suretyship Agreement dated as of August 22, 2001
               made by the Company in favor of First Union National Bank (1)
10.7           Irrevocable Standby Letter of Credit issued by First Union
               National Bank in favor of Pine Ridge Financial Inc. (1)
10.8           Irrevocable Standby Letter of Credit issued by First Union
               National Bank in favor of Strong River Investments, Inc. (1)
10.9           First Amendment to Securities Purchase Agreement dated as of
               September 20, 2001 among the Company, Pine Ridge Financial Inc.
               and Strong River Investments, Inc.
23.1           Consent of Morgan, Lewis & Bockius LLP (included in its opinion
               filed as Exhibit 5.1 hereto) (2)
23.2           Consent of Arthur Andersen LLP (2)
24.1           Powers of Attorney (included as part of the signature page
               hereof)

               ------------
               1. Filed as an exhibit to the Registrant's Current Report on
Form 8-K filed on September 6, 2001 and incorporated herein by reference.

               2.  Filed herewith.


Item 17.          Undertakings

     (a) The undersigned registrant hereby undertakes:

     (1) To file, during any period in which offers or sales are being made, a
         post-effective amendment to this registration statement:

                  (i)  To include any prospectus required by section 10(a)(3)
         of the Securities Act of 1933 (the "Securities Act");

                  (ii) To reflect in the prospectus any facts or events arising
                  after the effective date of the registration statement (or the
                  most recent post-effective amendment thereof) which,
                  individually or in the aggregate, represent a fundamental
                  change in the information set forth in the registration
                  statement; notwithstanding the foregoing, any increase or
                  decrease in the volume of securities offered (if the total
                  dollar value of securities offered would not exceed that which
                  was registered) and any deviation from the low or high end of
                  the estimated maximum offering range may be reflected in the
                  form of prospectus filed with the Commission pursuant to Rule
                  424(b) if, in the aggregate, the changes in volume and price
                  represent no more than a 20% change in the maximum aggregate
                  offering price set forth in the "Calculation of Registration
                  Fee" table in the effective registration statement;

                  (iii) To include any material information with respect to the
                  plan of distribution not previously disclosed in the
                  registration statement or any material change to such
                  information in the registration statement;

                  provided, however, that paragraphs (1)(i) and (1)(ii) do not
         apply if the information required to be included in a post-effective
         amendment by those paragraphs is contained in periodic reports filed
         with or furnished to the Commission by the registrant pursuant to
         section 13 or section 15(d) of the Securities Exchange Act of 1934 that
         are incorporated by reference in the registration statement.

     (2) That, for the purpose of determining any liability under the Securities
         Act, each such post-effective amendment shall be deemed to be a new
         registration statement relating to the securities offered therein, and
         the offering of such securities at that time shall be deemed to be the
         initial bona fide offering thereof.

     (3) To remove from registration by means of a post-effective amendment any
         of the securities being registered which remain unsold at the
         termination of the offering.

                                      II-3


     (b) The undersigned registrant hereby undertakes that, for purposes of
         determining any liability under the Securities Act, each filing of the
         registrant's annual report pursuant to Section 13(a) or 15(d) of the
         Securities Exchange Act of 1934 that is incorporated by reference in
         the registration statement shall be deemed to be a new registration
         statement relating to the securities offered therein, and the offering
         of such securities at that time shall be deemed to be the initial bona
         fide offering thereof.

     (c) That, insofar as indemnification for liabilities arising under the
         Securities Act may be permitted to directors, officers and controlling
         persons of the registrant pursuant to the foregoing provisions, or
         otherwise, the registrant has been advised that in the opinion of the
         Securities and Exchange Commission such indemnification is against
         public policy as expressed in the Act and is, therefore, unenforceable.
         In the event that a claim for indemnification against such liabilities
         (other than the payment by the registrant of expenses incurred or paid
         by a director, officer or controlling person of the registrant in the
         successful defense of any action, suit or proceeding) is asserted by
         such director, officer or controlling person in connection with the
         securities being registered, the registrant will, unless in the opinion
         of its counsel the matter has been settled by controlling precedent,
         submit to a court of appropriate jurisdiction the question whether such
         indemnification by it is against public policy as expressed in the Act
         and will be governed by the final adjudication of such issue.


                                      II-4






                                   SIGNATURES

         Pursuant to the requirements of the Securities Act of 1933, the
registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-3 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in Ewing, New Jersey, on September 21, 2001.

                                      UNIVERSAL DISPLAY CORPORATION

                                      By: /s/ Steven V. Abramson
                                          ----------------------
                                          Steven V. Abramson
                                          President and Chief Operating Officer

         In accordance with the requirements of the Securities Act of 1933, as
amended, this Registration Statement has been signed by the following persons in
the capacities and on the dates indicated.

         Each person in so signing also makes, constitutes and appoints Steven
V. Abramson and Sidney D. Rosenblatt, and each of them acting alone, his or her
true and lawful attorney-in-fact, with full power of substitution, to execute
and cause to be filed with the Securities and Exchange Commission pursuant to
the requirements of the Securities Act of 1933, as amended, any and all
amendments and post-effective amendments to this Registration Statement, and
including any registration statement for the same offering that is to be
effective upon filing pursuant to Rule 462(b) under the Securities Act, with
exhibits thereto and other documents in connection therewith, and hereby
ratifies and confirms all that said attorney-in-fact or his or her substitute or
substitutes may do or cause to be done by virtue hereof.



           Signature                                 Title                             Date
           ---------                                 -----                             ----
                                                                         

/s/ Sherwin I. Seligsohn         Chief Executive Officer and Chairman of the   September 21, 2001
-----------------------------    Board (principal executive officer)
Sherwin I. Seligsohn


/s/ Steven V. Abramson           President, Chief Operating Officer and        September 21, 2001
-----------------------------    Director
Steven V. Abramson


/s/ Sidney D. Rosenblatt         Executive Vice President, Chief Financial     September 21, 2001
-----------------------------    Officer, Treasurer, Secretary and Director
Sidney D. Rosenblatt             (principal financial and accounting officer)


/s/ C. Keith Hartley             Director                                      September 21, 2001
-----------------------------
C. Keith Hartley


/s/ Elizabeth H. Gemmill         Director                                      September 21, 2001
-----------------------------
Elizabeth H. Gemmill


/s/ Lawrence Lacerte             Director                                      September 21, 2001
-----------------------------
Lawrence Lacerte

/s/ Leonard Becker               Director                                      September 21, 2001
-----------------------------
Leonard Becker



                                      II-5