US 12,477,927 B2
Display substrate, manufacturing method thereof, and display apparatus
Jiayu He, Beijing (CN); Ce Ning, Beijing (CN); Zhengliang Li, Beijing (CN); Hehe Hu, Beijing (CN); Jie Huang, Beijing (CN); Nianqi Yao, Beijing (CN); Kun Zhao, Beijing (CN); Feifei Li, Beijing (CN); Liping Lei, Beijing (CN); and Qi Qi, Beijing (CN)
Assigned to Beijing BOE Technology Development Co., Ltd., Beijing (CN)
Appl. No. 17/795,243
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Sep. 30, 2021, PCT No. PCT/CN2021/122271
§ 371(c)(1), (2) Date Jul. 26, 2022,
PCT Pub. No. WO2023/050347, PCT Pub. Date Apr. 6, 2023.
Prior Publication US 2024/0188373 A1, Jun. 6, 2024
Int. Cl. H10K 59/65 (2023.01); H10K 59/12 (2023.01); H10K 59/121 (2023.01); H10K 59/80 (2023.01); H10K 71/00 (2023.01)
CPC H10K 59/65 (2023.02) [H10K 59/1201 (2023.02); H10K 59/1213 (2023.02); H10K 59/874 (2023.02); H10K 71/00 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A display substrate, comprising:
a substrate and a plurality of light emitting units and a plurality of light detection units located on the substrate, wherein at least one light emitting unit in the plurality of light emitting units comprises: a light emitting element and a pixel circuit connected to the light emitting element, at least one light detection unit in the plurality of light detection units comprises: an optical sensing element and a light emission detection circuit connected to the optical sensing element;
the optical sensing element is located on a side of the light emitting element close to the substrate; at least one inorganic hydrogen barrier layer is arranged on a side of the optical sensing element close to the substrate;
the light emitting element comprises a first light emitting region and a second light emitting region, the first light emitting region of the light emitting element emitting light from a side away from the substrate, and the second light emitting region of the light emitting element emitting light from a side close to the substrate; an orthographic projection of the second light emitting region of the light emitting element on the substrate is completely fallen within an orthographic projection of the first light emitting region on the substrate; and
an orthographic projection of at least one of the optical sensing elements on the substrate is at least partially overlapped with an orthographic projection of a second light emitting region of at least one of the light emitting elements on the substrate.