Exhibit 32.1

                           CERTIFICATIONS REQUIRED BY
               RULE 13a-14(b)/15d-14(b) AND 18 U.S.C. SECTION 1350

In connection with the quarterly report of Universal Display Corporation (the
"Company") on Form 10-Q for the quarterly period ended September 30, 2003, as
filed with the Securities and Exchange Commission on the date hereof (the
"Report"), I, Sherwin I. Seligsohn, Chairman of the Board and Chief Executive
Officer of the Company, hereby certify, based on my knowledge, 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.


Date: November 10, 2003              By: /s/ Sherwin I. Seligsohn
                                        ------------------------------------
                                             Sherwin I. Seligsohn
                                             Chairman of the Board and
                                             Chief Executive Officer