US 12,242,155 B2
Back plate and manufacturing method thereof, backlight module and display apparatus
Yaodong Wang, Beijing (CN); Yangli Zheng, Beijing (CN); Xiaoping Zhang, Beijing (CN); Luo Zhang, Beijing (CN); Quanzhou Liu, Beijing (CN); Fangyi Liu, Beijing (CN); and Jian Ren, Beijing (CN)
Assigned to Beijing BOE Display Technology Co., Ltd., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/926,191
Filed by Beijing BOE Display Technology Co., Ltd., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Nov. 30, 2021, PCT No. PCT/CN2021/134450
§ 371(c)(1), (2) Date Nov. 18, 2022,
PCT Pub. No. WO2023/097455, PCT Pub. Date Jun. 8, 2023.
Prior Publication US 2024/0219775 A1, Jul. 4, 2024
Int. Cl. G02F 1/13357 (2006.01)
CPC G02F 1/133608 (2013.01) 14 Claims
OG exemplary drawing
 
1. A backlight module, comprising a back plate,
wherein the back plate comprises:
a bottom wall;
a through hole in the bottom wall, wherein the through hole is provided with a hole wall protruding towards a side of the bottom wall, and the hole wall and the bottom wall are connected together and have a one-piece structure,
wherein materials of the bottom wall and the hole wall each comprise an aluminum alloy material,
wherein the back plate further comprises a side wall connected to the bottom wall, wherein the side wall and the bottom wall have a one-piece structure, and the side wall, the bottom wall and the hole wall define an accommodating space,
wherein the backlight module further comprises a backlight source, and at least a part of the backlight source is in the accommodating space,
wherein the side wall of the back plate has a first side surface, a second side surface and a top surface, the first side surface is opposite to the second side surface, the first side surface faces the accommodating space, and the top surface connects the first side surface and the second side surface together, and
the backlight module further comprises a housing, and the housing surrounds the backlight source and is in contact with the first side surface and the top surface of the side wall of the back plate,
wherein a glue injection hole is formed at a junction between the side wall and the bottom wall, a third groove is formed on a surface of the bottom wall close to the accommodating space, a part of the housing is filled in the third groove, and at least a part of the third groove is on a side of the glue injection hole in a thickness direction of the side wall.