Patent ID: 7417369

Claim:
An organic electroluminescent device (OELD), comprising: a substrate; a transparent anode disposed on the substrate; a transparent cathode disposed opposite the transparent anode; an organic light emitting layer interposed between the transparent anode and the transparent cathode; a first light transmissive optical compensation layer interposed between the transparent anode and the substrate; and a second light transmissive optical compensation layer disposed on the transparent cathode, wherein at least one of the first light transmissive optical compensation layer and the second light transmissive optical compensation layer comprises WO 3 , Ta 2 O 3 , V 2 O 5 , CeO 2 , Nb 2 O 5 , Gd 2 O 3 , Cr 2 O 3 , NiO, Bi 2 O 3 , SmO, Nd 2 O 5 or combinations thereof.