US 12,089,446 B2
Display substrate, manufacturing method thereof and display device
Yuhan Qian, Beijing (CN); Libin Liu, Beijing (CN); Jiangnan Lu, Beijing (CN); Mei Li, Beijing (CN); Shiming Shi, Beijing (CN); and Jie Zhang, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/599,007
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Feb. 25, 2021, PCT No. PCT/CN2021/077846
§ 371(c)(1), (2) Date Sep. 28, 2021,
PCT Pub. No. WO2021/170031, PCT Pub. Date Sep. 2, 2021.
Claims priority of application No. 202010127027.2 (CN), filed on Feb. 28, 2020.
Prior Publication US 2022/0181419 A1, Jun. 9, 2022
Int. Cl. H01L 29/08 (2006.01); H10K 50/15 (2023.01); H10K 50/16 (2023.01); H10K 50/17 (2023.01); H10K 59/121 (2023.01); H10K 59/131 (2023.01); H10K 71/00 (2023.01); H10K 59/12 (2023.01)
CPC H10K 59/1213 (2023.02) [H10K 50/15 (2023.02); H10K 50/16 (2023.02); H10K 50/171 (2023.02); H10K 59/1216 (2023.02); H10K 59/131 (2023.02); H10K 71/00 (2023.02); H10K 59/1201 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A display substrate having a plurality of pixel regions spaced apart from each other, the display substrate comprising:
a base substrate;
a light-emitting unit in each pixel region and comprising a first electrode, an organic light-emitting layer, and a second electrode, which are sequentially disposed in a direction away from the base substrate;
an auxiliary conductive layer between the light-emitting unit and the base substrate in a vertical direction;
a pixel circuit in each pixel region and comprising a driving transistor configured to supply a driving current to the light-emitting unit,
wherein the auxiliary conductive layer is on a side of the pixel circuit away from the base substrate, each of the second electrode has a portion extending out of the pixel region and coupling to the auxiliary conductive layer through a via hole not overlapping the pixel region, the auxiliary conductive layer is insulated and spaced apart from the first electrode and has a mesh or chain shape in a plan view, and a material of the auxiliary conductive layer is the same as a material of each of the first electrode and the second electrode of the driving transistor,
wherein second electrodes of the light-emitting units are coupled to be a single piece to form a second electrode layer, and a portion of the second electrode layer outside the pixel region is coupled to the auxiliary conductive layer through the via hole.