Patent ID: 9174938
Filing Date: 2015-11-03
Classification: B82Y,C07D,C09B,H01L

Abstract:
1. An organic electroluminescence device comprising: an anode, a cathode an emitting layer comprising an organic compound, which is between the anode and the cathode, two or more layers arranged in a hole injection and transport region which is between the anode and the emitting layer, and one or more layers arranged in an electron injection and transport region which is between the emitting layer and the cathode, wherein a layer in the hole injection and transport region, which is in contact with the emitting layer, comprises an aromatic amine derivative that has one carbazole skeleton, one of the layers other than the layer in contact with the emitting layer in the hole injection and transport region comprises an acceptor material that is an organic compound having a cyano group, and a layer in the electron injection and transport region comprises a benzimidazole derivative represented by the following formula (4): wherein Ar Ar L R R