Patent ID: 7812529

Claim:
A white organic light emitting device comprising: an anode disposed on a substrate; a first emissive layer disposed on the anode and having a first sub-emissive layer and a second sub-emissive layer stacked thereon; a second emissive layer disposed on the first emissive layer and having a third sub-emissive layer and a fourth sub-emissive layer that are stacked; a first intermediate layer supplying electrons to the first emissive layer and a second intermediate layer supplying holes to the second emissive layer, wherein the first and second intermediate layers are formed between the first emissive layer and the second emissive layer; and a cathode formed on the second emissive layer, wherein two layers of the first sub-emissive layer, the second sub-emissive layer, the third sub-emissive layer and the fourth sub-emissive layer emit a light having a blue color, and a color of a first light emitted from the first emissive layer is different from a color of a second light emitted from the second emissive layer.