Exhibit 99.2 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with to the Quarterly Report of Universal Display Corporation (the "Company") on Form 10-Q for the quarter ended September 30, 2002 as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Sidney D. Rosenblatt, Executive Vice President, Chief Financial Officer, Treasurer and Secretary of the Company, hereby certify, based on my knowledge, pursuant to 18 U.S.C. ss. 1350, as adopted pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002, that: (1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and (2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company. March 27, 2003 /s/ Sidney D. Rosenblatt -------------------------------- Sidney D. Rosenblatt Executive Vice President, Chief Financial Officer, Treasurer and Secretary