US 12,439,779 B2
Display substrate and manufacturing method therefor, and display device
Wei Xia, Beijing (CN); Yanqiang Wang, Beijing (CN); Yuanzheng Guo, Beijing (CN); and Yongzhan Han, Beijing (CN)
Assigned to CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/925,855
Filed by CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Nov. 8, 2021, PCT No. PCT/CN2021/129394
§ 371(c)(1), (2) Date Nov. 17, 2022,
PCT Pub. No. WO2022/179178, PCT Pub. Date Sep. 1, 2022.
Claims priority of application No. 202110210135.0 (CN), filed on Feb. 24, 2021.
Prior Publication US 2023/0200151 A1, Jun. 22, 2023
Int. Cl. H10K 59/126 (2023.01); H10K 59/12 (2023.01); H10K 77/10 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/126 (2023.02) [H10K 59/1201 (2023.02); H10K 77/111 (2023.02); H10K 2102/311 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display substrate, comprising:
a flexible light-transmitting substrate; a side of the flexible light-transmitting substrate having a plurality of grooves;
a light-shielding layer disposed on the side of the flexible light-transmitting substrate;
wherein the light-shielding layer includes a plurality of light-shielding patterns, and a light-shielding pattern in the plurality of light-shielding patterns is located in a groove in the plurality of grooves; the light-shielding pattern includes a first sub-light-shielding pattern and a second sub-light-shielding pattern, the first sub-light-shielding pattern covers a side wall of the groove, and the second sub-light-shielding pattern covers a bottom surface of the groove; and
a plurality of sub-pixels disposed on a side of the light-shielding layer away from the flexible light-transmitting substrate; each sub-pixel including a pixel driving circuit and a light-emitting device;
wherein the pixel driving circuit includes a plurality of transistors, and an active layer of a transistor in the plurality of transistors is located in the groove; relative to the flexible light-transmitting substrate, a surface of the active layer proximate to the flexible light-transmitting substrate is lower than a surface of the first sub-light-shielding pattern away from the flexible light-transmitting substrate.