Patent ID: 7407716
Filing Date: 2008-08-05
Classification: H01L,H05B,Y10S,Y10T

Abstract:
1. An organic electroluminescent device, comprising: a first emissive layer capable of emitting light in a first spectrum; a second emissive layer disposed over said first emissive layer, said first emissive layer having a solubility characteristic insoluble to the material used in fabricating said second emissive layer, wherein said second emissive layer is capable of emitting light in a second spectrum; and a third emissive layer disposed over said second emissive layer, said second emissive layer having a solubility characteristic insoluble to the material used in fabricating said third emissive layer, wherein said third emissive layer is capable of emitting light in a third spectrum, wherein each of said first emissive layer, said second emissive layer and said third emissive layer includes at least one selected from the group consisting of a polymer, polymer blend, and co-polymer and wherein the at least one of a polymer, polymer blend and co-polymer of the first emissive layer does not dissolve or degrade in a solvent used in fabricating the second emissive layer and the at least one of the polymer, polymer blend and co-polymer of the second emissive layer does not dissolve or degrade in a solvent used in fabricating the third emissive layer.