Patent ID: 6841949
Filing Date: 2005-01-11
Classification: H01L

Abstract:
1. A method of making a light emitting device, comprising: forming an array of OLEDsincluding a first and a second set; electrically connecting the first set of OLEDs which emit light of a first color to a power source; electrically connecting the second set of OLEDs which emit light of a different second color to the same power source; and forming a layer of scattering medium over the array of OLEDs; the method further comprising mounting the array of individual OLEDs on a common substrate; wherein the step of forming the array of OLEDs comprising forming each OLED and forming the array of OLEDs, and wherein the step of forming each OLED comprises: forming a transparent electrode over a first substrate; forming a polymer or molecular organic light emitting layer over the transparent electrode; forming a metal electrode over the organic light emitting layer; forming a sealing member above the metal electrode; removing a portion of the organic light emitting layer above the transparent electrode to expose a first portion of a top surface of the transparent electrode; forming a first metal device contact over the sealing member, which contacts the first portion of the top surface of the transparent electrode; forming a second metal device contact over the sealing member, which contacts a top surface of the metal electrode; and wherein the step of forming the array comprises: forming an adhesive layer over the mounting substrate; attaching each OLED over the adhesive layer; forming electrical contacts through the mounting substrate and the adhesive layer which contact the first and second device contacts; and forming the layer of scattering medium over the first substrate.