	US 12,232,406 B2
	Method of manufacturing OLED display panel, display panel and display device
Jie Li, Beijing (CN); and Zuo Chen, Beijing (CN)
Assigned to Chongqing BOE Display Technology Co., Ltd., Chongqing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/771,903
Filed by Chongqing BOE Display Technology Co., Ltd., Chongqing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Jun. 15, 2021, PCT No. PCT/CN2021/099930 § 371(c)(1), (2) Date Apr. 26, 2022, PCT Pub. No. WO2021/254297, PCT Pub. Date Dec. 23, 2021.
Claims priority of application No. 202010543462.3 (CN), filed on Jun. 15, 2020.
Prior Publication US 2022/0376218 A1, Nov. 24, 2022
Int. Cl. H10K 71/00 (2023.01); H10K 50/86 (2023.01)

CPC H10K 71/00 (2023.02) [H10K 50/865 (2023.02)]

14 Claims

1. A method of manufacturing an OLED display panel, comprising:

providing a backplane, wherein a light-emitting layer is provided on the backplane, and an encapsulation layer is provided on the light-emitting layer;

forming an organic layer on a side of the encapsulation layer away from the light-emitting layer using an organic material;

patterning the organic layer to form, on the encapsulation layer, a first region covered by the organic layer and a second region not covered by the organic layer;

etching the organic layer in the first region to form a plurality of pits on a surface of the organic layer away from the encapsulation layer;

filling the plurality of pits with a metal to form a black mask layer;

forming a color film layer in the second region;

and forming a planar layer covering the color film layer and the black mask layer.