US 12,436,638 B2
Display substrate and display device
Youchun Chen, Beijing (CN); Dan Guo, Beijing (CN); Shuo Li, Beijing (CN); Hongcheng Gao, Beijing (CN); Jiandong Bao, Beijing (CN); Jiwei Wang, Beijing (CN); Sheng Guo, Beijing (CN); Peng Hou, Beijing (CN); and Yue Liu, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Chengdu (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/800,045
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Chengdu (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Nov. 4, 2021, PCT No. PCT/CN2021/128698
§ 371(c)(1), (2) Date Aug. 16, 2022,
PCT Pub. No. WO2022/242048, PCT Pub. Date Nov. 24, 2022.
Claims priority of application No. PCT/CN2021/094676 (WO), filed on May 19, 2021; and application No. 202110726472.5 (CN), filed on Jun. 29, 2021.
Prior Publication US 2024/0179989 A1, May 30, 2024
Int. Cl. H10K 59/35 (2023.01); G06F 3/041 (2006.01); G06F 3/044 (2006.01); G06F 3/047 (2006.01); H10K 59/122 (2023.01); H10K 59/131 (2023.01); H10K 59/65 (2023.01); H10K 59/80 (2023.01)
CPC G06F 3/04164 (2019.05) [G06F 3/0445 (2019.05); G06F 3/047 (2013.01); H10K 59/122 (2023.02); H10K 59/352 (2023.02); H10K 59/353 (2023.02); H10K 59/873 (2023.02); H10K 59/8792 (2023.02); H10K 59/131 (2023.02); H10K 59/65 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A display substrate, having a plurality of sub-pixels arranged in an array, and comprising a base substrate, a driving circuit layer on the base substrate, a pixel definition layer and a light-emitting device layer on a side of the driving circuit layer away from the base substrate, and a black matrix layer on a side of the light-emitting device layer away from the base substrate,
wherein each of the plurality of sub-pixels comprises a pixel driving circuit in the driving circuit layer and a light-emitting device in the light-emitting device layer, and the pixel driving circuit is configured to drive the light-emitting device;
the pixel definition layer comprises a plurality of sub-pixel openings, the light-emitting device comprises a first electrode layer, a light-emitting material layer, and a second electrode layer that are sequentially stacked in a direction away from the base substrate, the pixel definition layer is on a side of the first electrode layer away from the base substrate, and the plurality of sub-pixel openings respectively expose first electrode layers of light-emitting devices of the plurality of sub-pixels;
the black matrix layer includes a plurality of first light-transmitting openings respectively exposing the light-emitting devices of the plurality of sub-pixels in a direction perpendicular to a surface of the base substrate, and at least one of the plurality of first light-transmitting openings has an arc-shaped edge; and
in the direction perpendicular to the surface of the base substrate, at least part of the plurality of sub-pixel openings are in one-to-one correspondence with and at least partially overlapped with the plurality of first light-transmitting openings;
the first electrode layer comprises a main body portion and a connection portion, the connection portion is configured to be electrically connected to the pixel driving circuit, and at least part of the main body portion is exposed by the sub-pixel opening; and in a direction parallel to the surface of the base substrate, a plane shape of the main body portion is at least partially same as a plane shape of the sub-pixel opening.