US 12,219,819 B2
Display substrate, manufacturing method thereof, and display apparatus
Xing Fan, Beijing (CN); Shantao Chen, Beijing (CN); Xin Li, Beijing (CN); Hao Gao, Beijing (CN); Cheng Han, Beijing (CN); and Yansong Li, Beijing (CN)
Assigned to BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/633,219
Filed by BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Apr. 26, 2021, PCT No. PCT/CN2021/090012
§ 371(c)(1), (2) Date Feb. 7, 2022,
PCT Pub. No. WO2022/226737, PCT Pub. Date Nov. 3, 2022.
Prior Publication US 2023/0363208 A1, Nov. 9, 2023
Int. Cl. H10K 59/122 (2023.01); H10K 59/12 (2023.01); H10K 59/80 (2023.01); H10K 102/00 (2023.01)
CPC H10K 59/122 (2023.02) [H10K 59/1201 (2023.02); H10K 59/873 (2023.02); H10K 2102/351 (2023.02)] 16 Claims
OG exemplary drawing
 
1. A display substrate, comprising:
a first electrode layer, a pixel define layer, an organic light-emitting layer, a second electrode layer and a first encapsulation layer which are sequentially disposed away from an base substrate;
wherein:
the pixel define layer comprises a plurality of openings, at least one of which exposes the first electrode layer;
the pixel define layer comprises a first climbing part and a second climbing part close to the edge of at least one opening, a distance from a surface of the second climbing part away from the base substrate to the base substrate is greater than a distance from a surface of the first climbing part away from the base substrate to the base substrate, and a slope angle of the first climbing part is different from a slope angle of the second climbing part;
the first encapsulation layer comprises a first encapsulation climbing part and a second encapsulation climbing part, a distance from a surface of the second encapsulation climbing part away from the base substrate to the base substrate is greater than a distance from a surface of the first encapsulation climbing part away from the base substrate to the base substrate, and a slope angle of the first encapsulation climbing part is different from a slope angle of the second encapsulation climbing part;
the slope angle is an included angle between a tangent of the climbing part and a plane parallel to the base substrate;
the first climbing part comprises at least one first step;
the first step comprises a first flat part and a first slope, and the first flat part is connected between the first slope and the second climbing part; and
a thickness of the first encapsulation layer is about 600 nanometers to 3 microns; in a direction perpendicular to the base substrate, a distance from a surface of the first flat part away from the base substrate to the first electrode layer is greater than or equal to 200 nanometers.