US 11,910,641 B2
Electroluminescent display substrate and display device
Youngyik Ko, Beijing (CN); Weiyun Huang, Beijing (CN); Chao Zeng, Beijing (CN); and Yizhen Huang, Beijing (CN)
Assigned to CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/309,474
Filed by CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Chengdu (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Aug. 14, 2020, PCT No. PCT/CN2020/109286
§ 371(c)(1), (2) Date May 28, 2021,
PCT Pub. No. WO2021/077873, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 201911009276.5 (CN), filed on Oct. 22, 2019.
Prior Publication US 2022/0029137 A1, Jan. 27, 2022
Int. Cl. H01L 51/50 (2006.01); H10K 50/86 (2023.01); G06F 3/044 (2006.01); G06F 3/041 (2006.01); H10K 59/40 (2023.01); H10K 71/00 (2023.01); H10K 50/844 (2023.01); H10K 59/12 (2023.01); H10K 77/10 (2023.01)
CPC H10K 50/86 (2023.02) [G06F 3/0412 (2013.01); G06F 3/0445 (2019.05); H10K 59/40 (2023.02); H10K 71/00 (2023.02); H10K 50/844 (2023.02); H10K 59/1201 (2023.02); H10K 77/10 (2023.02)] 19 Claims
OG exemplary drawing
 
1. An electroluminescent display substrate, comprising:
a base substrate;
a display light-emitting element arranged on the base substrate, wherein the display light-emitting element comprises a light-emitting layer for emitting light;
an encapsulation structure arranged on the base substrate and covering the display light-emitting element;
a light-shielding structure arranged on a side of the encapsulation structure away from the base substrate; and
an opening at least passing through the encapsulation structure,
wherein an orthographic projection of the light-shielding structure on the base substrate is located between an orthographic projection of the light-emitting layer of the display light-emitting element on the base substrate and an orthographic projection of the opening on the base substrate, and
wherein the light-shielding structure comprises a first light-shielding portion and a second light-shielding portion that extend continuously, the base substrate comprises a first surface close to the display light-emitting element and the light-shielding structure, a vertical distance between the first light-shielding portion and the first surface of the base substrate is greater than a vertical distance between the light-emitting layer of the display light-emitting element and the first surface of the base substrate, and a vertical distance between at least a part of the second light-shielding portion and the first surface of the base substrate is less than the vertical distance between the light-emitting layer of the display light-emitting element and the first surface of the base substrate.