US 12,279,494 B2
Display substrate and manufacturing method therefor, and display device
Tinghua Shang, Beijing (CN); Haigang Qing, Beijing (CN); Lulu Yang, Beijing (CN); and Zhengwei Luo, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Appl. No. 17/769,332
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed May 13, 2021, PCT No. PCT/CN2021/093555
§ 371(c)(1), (2) Date Apr. 14, 2022,
PCT Pub. No. WO2022/001405, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 202010615474.2 (CN), filed on Jun. 29, 2020.
Prior Publication US 2024/0130175 A1, Apr. 18, 2024
Int. Cl. H01L 51/52 (2006.01); H01L 51/56 (2006.01); H10K 59/12 (2023.01); H10K 59/131 (2023.01); H10K 59/80 (2023.01)
CPC H10K 59/131 (2023.02) [H10K 59/1201 (2023.02); H10K 59/873 (2023.02)] 18 Claims
OG exemplary drawing
 
1. A display substrate, comprising:
a base substrate, comprising a display region, a bonding region located on a side of the display region, and a first peripheral region located between the display region and the bonding region; the display region comprising a plurality of display units;
a power supply line, at least partially arranged in the first peripheral region of the base substrate, and electrically connected to the display units;
an organic insulating layer, arranged on a side of the power supply line away from the base substrate, the organic insulating layer comprising, in the first peripheral region, at least two organic grooves and an isolation dam arranged between adjacent two organic grooves, the organic grooves penetrating the organic insulating layer; wherein there is an overlapping region between the power supply line and orthographic projections of the organic grooves on the base substrate; and
a metal protective structure, arranged on a side of the power supply line away from the base substrate, and covering at least one edge of the overlapping region of the power supply line that is intersected with a first direction, the first direction referring to an extension direction parallel to an edge on a side of the display region close to the first peripheral region, wherein:
the isolation dam comprises a first isolation dam and a second isolation dam, a distance between the first isolation dam and an edge on a side of the display region close to the first peripheral region is less than a distance between the second isolation dam and an edge on a side of the display region close to the first peripheral region;
the metal protective structure is disconnected in the first isolation dam, or the metal protective structure is disconnected in the second isolation dam, or the metal protective structure is disconnected in both the first isolation dam and the second isolation dam;
the power supply line comprises a first power supply line and a second power supply line; the first power supply line and orthographic projections of the organic grooves on the base substrate have a first overlapping region; and the second power supply line and the orthographic projections of the organic grooves on the base substrate have a second overlapping region;
the metal protective structure comprises: a first metal protective structure and a second metal protective structure;
the first metal protective structure covers at least one edge of the first overlapping region of the first power supply line that is intersected with the first direction; the second metal protective structure covers at least one edge of the second overlapping region of the second power supply line that is intersected with the first direction;
the first metal protective structure is disconnected in the first isolation dam, or is disconnected in the second isolation dam, or is disconnected in both the first isolation dam and the second isolation dam; and
the second metal protective structure is disconnected in the first isolation dam, or is disconnected in the second isolation dam, or is disconnected in both the first isolation dam and the second isolation dam.
 
16. A method for preparing a display substrate, comprising:
providing an base substrate, the base substrate comprising a display region, a bonding region located on a side of the display region, and a first peripheral region located between the display region and the bonding region;
forming a power supply line in the first peripheral region, the power supply line being electrically connected to a display unit of the display region; and
forming an organic insulating layer and a metal protective structure on a side of the power supply line away from the base substrate, wherein the organic insulating layer comprises, in the first peripheral region, at least two organic grooves and an isolation dam arranged between adjacent two organic grooves, the organic grooves penetrate the organic insulating layer, there is an overlapping region between the power supply line and orthographic projections of the organic grooves on the base substrate, and the metal protective structure covers at least one edge of the overlapping region of the power supply line that is intersected with a first direction, the first direction referring to an extension direction parallel to an edge on a side of the display region close to the first peripheral region,
wherein:
the isolation dam comprises a first isolation dam and a second isolation dam, a distance between the first isolation dam and an edge on a side of the display region close to the first peripheral region is less than a distance between the second isolation dam and an edge on a side of the display region close to the first peripheral region;
the metal protective structure is disconnected in the first isolation dam, or the metal protective structure is disconnected in the second isolation dam, or the metal protective structure is disconnected in both the first isolation dam and the second isolation dam;
the power supply line comprises a first power supply line and a second power supply line; the first power supply line and orthographic projections of the organic grooves on the base substrate have a first overlapping region; and the second power supply line and the orthographic projections of the organic grooves on the base substrate have a second overlapping region;
the metal protective structure comprises: a first metal protective structure and a second metal protective structure;
the first metal protective structure covers at least one edge of the first overlapping region of the first power supply line that is intersected with the first direction; the second metal protective structure covers at least one edge of the second overlapping region of the second power supply line that is intersected with the first direction;
the first metal protective structure is disconnected in the first isolation dam, or is disconnected in the second isolation dam, or is disconnected in both the first isolation dam and the second isolation dam; and
the second metal protective structure is disconnected in the first isolation dam, or is disconnected in the second isolation dam, or is disconnected in both the first isolation dam and the second isolation dam.