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AMENDMENT #6

to the

OLED PATENT LICENSE AGREEMENT

(originally effective as of April 19, 2005)

by and between

Samsung Mobile Display Co., Ltd., as successor to Samsung SDI Co., Ltd. (“SMD”)

and

Universal Display Corporation (“UDC”)

This Amendment #6 shall amend and modify, to the extent of any inconsistency,
the provisions of the above-referenced OLED Patent License Agreement, as
previously amended (the “Agreement”).  The effective date of this Amendment #6
is July 1, 2011.

1.  
The Extension Period referred to in paragraph 1 of Amendment #2 to the Agreement
is hereby extended for three (3) additional months, through September 30, 2011.

2.  
Except as set forth herein, all other terms and conditions of the Agreement, as
previously amended, shall remain in full force and effect.

IN WITNESS WHEREOF, the parties by their duly authorized representatives have
agreed to this Amendment #6:

Samsung Mobile Display Co., Ltd.
   
Universal Display Corporation
           
By:
           /s/ Ki Kim                      
   
By:
           /s/ Sidney D. Rosenblatt                                           
           
Name:
           Ki Kim                      
   
Name:
           Sidney D. Rosenblatt                                           
           
Title:
           Sr. Counsel / Director
   
Title:
           CFO           
           
Date:
           June 30, 2011                                
   
Date:
           June 28, 2011                                

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