Patent ID: 8053975
Filing Date: 2011-11-08
Classification: H01L

Abstract:
1. An organic light emitting device comprising: a substrate; a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, the organic layer comprising a hole injection layer and an emissive layer, the emissive layer comprising a red emissive layer, a green emissive layer, and a blue emissive layer, wherein the organic layer further comprises an auxiliary layer selected from the group consisting of: the organic light emitting device further comprising a hole transport layer directly contacting the red emissive layer and the green emissive layer, wherein the auxiliary layer comprises a material having a hole mobility of about 1.5 to about 2 times that of 4,4′-bis [N-(1-napthyl)-N-phenylamino]biphenyl (NPB) and is different from a material of the hole injection layer.