SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C.  20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(D) OF THE

SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported):  December 20, 2010 (December 17, 2010)

Universal Display Corporation

(Exact Name of Registrant Specified in Charter)

Pennsylvania	1-12031	23-2372688
(State or other jurisdiction of	(Commission File Number)	(I.R.S. Employer Identification No.)
incorporation or organization)

375 Phillips Boulevard
Ewing, NJ	08618
(Address of Principal Executive Offices)	(Zip Code)

Registrant’s telephone number, including area code:    (609) 671-0980

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2 below):

           Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

           Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

           Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

           Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 1.01 Entry into a Material Definitive Agreement.

On December 17, 2010, the Registrant and Samsung Mobile Display Co., Ltd. (“SMD”) entered into Amendment No. 4 to their OLED Patent License Agreement dated as of April 19, 2005, as previously amended (the “Agreement”).  Amendment No. 4 extends the term of the Agreement for an additional period of three months, through March 31, 2011.  All other terms of the Agreement, as previously amended, remain the same.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

UNIVERSAL DISPLAY CORPORATION

Dated: December 20, 2010	By:            / s/ Sidney D. Rosenblatt
	Sidney D. Rosenblatt
	Executive Vice President, Chief Financial Officer, Treasurer and Secretary