Patent ID: 9048461
Filing Date: 2015-06-02
Classification: H01L

Abstract:
1. A method of manufacturing an Organic Light Emitting Diode (OLED) pixel, wherein the OLED pixel at least comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, wherein the method of manufacturing the OLED pixel comprises: forming an anode on a substrate; forming a pixel definition layer on the substrate, wherein the pixel definition layer comprises: coating a first long-chain fatty acid ester layer on the pixel spacing area, the second sub-pixel area, and the third sub-pixel area; coating a first light emitting layer on the first sub-pixel area and on the first long-chain fatty acid ester layer; ashing the substrate, and removing the first long-chain fatty acid ester layer to form a first light emitting pattern; coating a second long-chain fatty acid ester layer on the pixel spacing area, the first light emitting pattern, and the third sub-pixel area; coating a second light emitting layer on the second sub-pixel area and the second long-chain fatty acid ester layer; ashing the substrate, and removing the second long-chain fatty acid ester layer to form a second light emitting pattern; coating a third long-chain fatty acid ester layer on the pixel spacing area, the first light emitting pattern, and the second light emitting pattern; coating a third light emitting layer on the third sub-pixel area and the third long-chain fatty acid ester layer; ashing the substrate, and removing the third long-chain fatty acid ester layer to form a third light emitting pattern; and forming a cathode.