Patent ID: 7619243
Filing Date: 2009-11-17
Classification: H01L

Abstract:
1. A color organic electroluminescent display, comprising: a substrate; a plurality of cathode electrodes formed on the substrate and arranged as pixels; a first organic semiconductor layer having an electron-injection transporting property and disposed on the plurality of cathode electrodes; a plurality of mixed organic semiconductor layers respectively corresponding in position to the plurality of cathode electrodes, formed in the first organic, semiconductor layer, wherein upper surfaces of the plurality of mixed organic semiconductor layers are respectively exposed from the first organic semiconductor layer; a plurality of second organic semiconductor layers respectively corresponding in position to the plurality of mixed organic semiconductor layers, formed on the first organic semiconductor layer, wherein the plurality of second organic semiconductor layers are respectively positioned on the plurality of mixed organic semiconductor layers; and a common anode electrode formed over the plurality of second organic semiconductor layers and the first organic semiconductor layer, wherein the plurality of mixed organic semiconductor layers are respectively made of a mixture of organic light-emitting material constituting each of the corresponding second organic semiconductor layers and material constituting the first organic semiconductor layer, and wherein lower surfaces of the second organic semiconductor layer (