US 12,114,531 B2
Display substrate and display device with long-term light emission stability
Yi Qu, Beijing (CN); Tinghua Shang, Beijing (CN); Lulu Yang, Beijing (CN); Huijun Li, Beijing (CN); Meng Zhang, Beijing (CN); Xin Zhang, Beijing (CN); Xiaofeng Jiang, Beijing (CN); Jie Dai, Beijing (CN); Lu Bai, Beijing (CN); Yupeng He, Beijing (CN); and Hao Zhang, Beijing (CN)
Assigned to CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/427,969
Filed by CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Mar. 25, 2020, PCT No. PCT/CN2020/081221
§ 371(c)(1), (2) Date Aug. 3, 2021,
PCT Pub. No. WO2021/189329, PCT Pub. Date Sep. 30, 2021.
Prior Publication US 2022/0320214 A1, Oct. 6, 2022
Int. Cl. H10K 59/121 (2023.01); H10K 59/122 (2023.01); H10K 59/131 (2023.01)
CPC H10K 59/1213 (2023.02) [H10K 59/1216 (2023.02); H10K 59/122 (2023.02); H10K 59/131 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display substrate, comprising:
a base substrate;
a pixel circuit layer, located on the base substrate and comprising a plurality of pixel driving circuits; and
an anode layer, located at a side of the pixel circuit layer away from the base substrate and comprising a plurality of anodes,
wherein the plurality of pixel driving circuits are electrically connected with the plurality of anodes in one-to-one correspondence, each of the plurality of pixel driving circuits comprises a compensating thin film transistor and a driving thin film transistor, a source electrode of the compensating thin film transistor is connected with a drain electrode of the driving thin film transistor, and a drain electrode of the compensating thin film transistor is connected with a gate electrode of the driving thin film transistor; and
the plurality of pixel driving circuits comprise a first pixel driving circuit and a second pixel driving circuit which are adjacently arranged, and an orthographic projection of a channel region of the compensating thin film transistor in the first pixel driving circuit on the base substrate and an orthographic projection of a channel region of the compensating thin film transistor in the second pixel driving circuit on the base substrate both overlap with an orthographic projection of the anode corresponding to the first pixel driving circuit on the base substrate.