US 12,256,581 B2
Light-emitting substrate, backlight source and display device
Zhichao Yang, Beijing (CN); Jian Wang, Beijing (CN); Yong Zhang, Beijing (CN); Xianglei Qin, Beijing (CN); Jian Lin, Beijing (CN); Limin Zhang, Beijing (CN); Zepeng Sun, Beijing (CN); Liangzhen Tang, Beijing (CN); Zhilong Duan, Beijing (CN); Honggui Jin, Beijing (CN); Yashuai An, Beijing (CN); and Lingfang Nie, Beijing (CN)
Assigned to BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/627,311
Filed by Beijing BOE Optoelectronics Technology Co., Ltd., Beijing (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
PCT Filed Mar. 17, 2021, PCT No. PCT/CN2021/081324
§ 371(c)(1), (2) Date Jan. 14, 2022,
PCT Pub. No. WO2021/190378, PCT Pub. Date Sep. 30, 2021.
Claims priority of application No. 202020380907.6 (CN), filed on Mar. 24, 2020.
Prior Publication US 2022/0263000 A1, Aug. 18, 2022
Int. Cl. H01L 33/62 (2010.01); G02F 1/13357 (2006.01); H01L 25/075 (2006.01); H10H 20/857 (2025.01)
CPC H10H 20/857 (2025.01) [G02F 1/133603 (2013.01); H01L 25/0753 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A light-emitting substrate, comprising:
a base substrate having a first surface and a second surface which are opposite, and comprising a light-emitting area and a bonding area located on a side of the light-emitting area;
a light-emitting unit disposed on the first surface of the base substrate and located in the light-emitting area, and comprising a plurality of light-emitting elements which are connected together; and
transmission lines disposed on the base substrate; wherein
at least a part of at least one transmission line is located on the second surface of the base substrate; and
two ends of the light-emitting unit are respectively connected to the bonding area through different transmission lines,
wherein the base substrate has a plurality of side surfaces which are connected between the first surface and the second surface, and at least one transmission line comprises a third transmission part, a fourth transmission part, and a fifth transmission part which are connected in sequence;
the third transmission part is located on the first surface of the base substrate, and two ends of the third transmission part are respectively connected to the light-emitting unit and the fourth transmission part;
the fourth transmission part is located on the side surface of the base substrate; and
one end of the fifth transmission part is connected to the fourth transmission part, another end of the fifth transmission part extends to the bonding area, and at least a part of the fifth transmission part is located on the second surface of the base substrate.