Patent ID: 11917894
Assignee: GUANGZHOU NEW VISION OPTO-ELECTRONIC TECHNOLOGY CO., LTD.
Field: nan (nan)
Classification: CPC H | IPC H

Claim 0:
1. A method for preparing an organic electroluminescent device, wherein the organic electroluminescent device comprises a plurality of pixels, each pixel of the plurality of pixels comprises at least a red sub-pixel, a green sub-pixel and a blue sub-pixel, and the method for preparing the organic electroluminescent device comprises:
providing a substrate, wherein the substrate comprises a red sub-pixel preparation region corresponding to the red sub-pixel, a green sub-pixel preparation region corresponding to the green sub-pixel, and a blue sub-pixel preparation region corresponding to the blue sub-pixel;
forming a red light reflective electrode, a green light reflective electrode and a blue light reflective electrode on the substrate, the red light reflective electrode being located in the red sub-pixel preparation region, the green light reflective electrode being located in the green sub-pixel preparation region, and the blue light reflective electrode being located in the blue sub-pixel preparation region;
forming a transparent insulating layer on a surface of a side of the red light reflective electrode facing away from the substrate, wherein an area of the transparent insulating layer is smaller than an area of the red light reflective electrode;
forming a transparent conductive layer on a surface of a side of the transparent insulating layer facing away from the substrate, forming a transparent conductive layer on a surface of a side of the red light reflective electrode facing away from the substrate and not covered by the transparent insulating layer, and forming a transparent conductive layer on a surface of a side of the green light reflective electrode facing away from the substrate;
forming a pixel definition layer between adjacent sub-pixels;
forming an organic light-emitting structure on a surface of a side of the transparent conductive layer facing away from the substrate and a surface of a side of the blue light reflective electrode facing away from the substrate, wherein the organic light-emitting structure comprises at least an organic light-emitting layer;
forming a cathode on a surface of a side of the organic light-emitting structure facing away from the substrate; and
forming an encapsulation layer on a side of the cathode facing away from the substrate.