US 12,284,885 B2
Display substrate and display device capable of avoiding color cast
Tinghua Shang, Beijing (CN); Yi Zhang, Beijing (CN); Tingliang Liu, Beijing (CN); Shun Zhang, Beijing (CN); Huijuan Yang, Beijing (CN); and Yu Wang, Beijing (CN)
Assigned to CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Sichuan (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/427,114
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/CN2020/081155
§ 371(c)(1), (2) Date Jul. 30, 2021,
PCT Pub. No. WO2021/189305, PCT Pub. Date Sep. 30, 2021.
Prior Publication US 2022/0320244 A1, Oct. 6, 2022
Int. Cl. H10K 59/131 (2023.01); H10K 50/813 (2023.01); H10K 59/121 (2023.01); H10K 59/122 (2023.01)
CPC H10K 59/131 (2023.02) [H10K 50/813 (2023.02); H10K 59/1213 (2023.02); H10K 59/1216 (2023.02); H10K 59/122 (2023.02)] 19 Claims
OG exemplary drawing
 
1. A display substrate, comprising:
a base substrate;
a first conductive layer on the base substrate;
a first planarization layer at a side of the first conductive layer away from the base substrate;
a second conductive layer at a side of the first planarization layer away from the first conductive layer;
a second planarization layer at a side of the second conductive layer away from the first planarization layer; and
a plurality of light emitting element groups at a side of the first planarization layer away from the first conductive layer,
wherein the plurality of light emitting element groups are arranged along a first direction to form a plurality of light emitting element columns and along a second direction to form a plurality of light emitting element rows, and each of the plurality of light emitting element groups comprises a first light emitting element, a second light emitting element, a third light emitting element and a fourth light emitting element, the second light emitting element and the third light emitting element are arranged along the second direction to form a light emitting element pair, the first light emitting element, the light emitting element pair and the fourth light emitting element are arranged along the first direction,
the first light emitting element comprises a first anode, the second light emitting element comprises a second anode, the third light emitting element comprises a third anode, the fourth light emitting element comprises a fourth anode, the second conductive layer comprises a first connection electrode, a second connection electrode, a third connection electrode and a fourth connection electrode, the second planarization layer comprises a first via hole, a second via hole, a third via hole and a fourth via hole, the first anode is connected with the first connection electrode through the first via hole, the second anode is connected with the second connection electrode through the second via hole, the third anode is connected with the third connection electrode through the third via hole, and the fourth anode is connected with the fourth connection electrode through the fourth via hole,
a plurality of third via holes corresponding to one light emitting element row are approximately located on a first straight line extending along the first direction, and an orthographic projection of the fourth via hole closest to the first straight line on the base substrate is located at a side of the first straight line close to the fourth anode corresponding to the fourth via hole,
an orthographic projection of the first via hole closest to the first straight line on the base substrate is located at a side of the first straight line close to the first anode corresponding to the first via hole.