Patent ID: 8052497
Filing Date: 2011-11-08
Classification: C09K,H01L,H05B

Abstract:
1. A method of manufacturing an organic light emitting device, the method comprising: forming a first electrode on a substrate; forming on the first electrode an organic layer comprising an emissive layer and an electron transport layer; and forming a second electrode on the organic layer, wherein the emissive layer comprises: a red emissive layer, a green emissive layer, and a blue emissive layer, wherein the electron transport layer comprises: a first electron transport layer comprising at least one of a first layer on the red emissive layer and having substantially the same pattern as that of the red emissive layer, a second layer on the green emissive layer and having substantially the same pattern as that of the green emissive layer, and a third layer on the blue emissive layer and having substantially the same pattern as that of the blue emissive layer; and a second electron transport layer on the first electron transport layer as a common layer with respect to red, green, and blue sub-pixels, and wherein the forming the organic layer comprises: a) forming the emissive layer and the first electron transport layer, the forming the emissive layer and the first electron transport layer comprising at least one of forming the red emissive layer and then forming the first layer in a same first deposition chamber for forming the red emissive layer; forming the green emissive layer and then forming the second layer in a same second deposition chamber for forming the green emissive layer; or forming the blue emissive layer and then forming the third layer in a same third deposition chamber for forming the blue emissive layer, and b) forming the second electron transport layer in a fourth deposition chamber on the first electron transport layer as a common layer with respect to the red, green, and blue sub-pixels.