Patent ID: 6264805
Filing Date: 2001-07-24
Classification: C09K,H01L

Abstract:
A method of fabricating a multicolor light emitting device (LED) structure that is substantially transparent when de-energized, comprising the steps of:forming a first transparent conductive layer upon a transparent substrate;depositing a substantially transparent first hole transporting layer upon said first transparent conductive layer;depositing a substantially transparent first organic emission layer upon said first hole transporting layer to provide a first emission color;depositing via vapor deposition a substantially transparent first electron transporting layer upon said first organic emission layer;depositing via sputtering a second transparent conductive layer upon said first electron transporting layer, said second transparent conductive layer adapted to receive a first bias potential;depositing a substantially transparent second hole transporting layer upon said second transparent conductive layer;depositing a substantially transparent second organic emission layer upon said second hole transporting layer to provide a second emission color;depositing via vapor deposition a substantially transparent second electron transporting layer upon said second organic emission layer; anddepositing via sputtering a third transparent conductive layer upon said second electron transporting layer, said third transparent conductive layer adapted to receive a second bias potential.