US 12,345,392 B2
Backlight module, display module and display apparatus
Ran Tao, Beijing (CN); Haifeng Xu, Beijing (CN); Xiaojun Wu, Beijing (CN); and Xiaochun Shi, Beijing (CN)
Assigned to Hefei Xinsheng Optoelectronics Technology Co., Ltd., Anhui (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 18/029,229
Filed by Hefei Xinsheng Optoelectronics Technology Co., Ltd., Anhui (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Apr. 29, 2022, PCT No. PCT/CN2022/090275
§ 371(c)(1), (2) Date Mar. 29, 2023,
PCT Pub. No. WO2023/206362, PCT Pub. Date Nov. 2, 2023.
Prior Publication US 2024/0360985 A1, Oct. 31, 2024
Int. Cl. F21V 17/10 (2006.01)
CPC F21V 17/10 (2013.01) 17 Claims
OG exemplary drawing
 
1. A backlight module, comprising a backlight assembly, a back plate and a middle frame, wherein the back plate comprises a back plate main body and back plate sides, the back plate main body is arranged on a side away from a light outgoing surface of the backlight assembly, and the back plate sides are arranged around the backlight assembly; and the middle frame comprises a middle frame main body on a side of the back plate sides close to the backlight assembly; and
the middle frame further comprises first middle frame sides, each of which is connected to the middle frame main body and on a side of a corresponding back plate side close to the backlight assembly; at least one first clamping portion is arranged on a surface of each first middle frame side opposite to a corresponding back plate side; at least one second clamping portion is on a surface of each back plate side opposite to a corresponding first middle frame side, and each first clamping portion is clamped with a corresponding second clamping portion;
wherein the backlight module further comprises a first limiting structure on the first middle frame side, and a second limiting structure on the back plate side corresponding to the first middle frame side, wherein the first limiting structure and the second limiting structure cooperate with each other, to limit relative positions between the first middle frame side and the back plate side;
wherein a surface of the back plate side facing a same direction as the light outgoing surface of the backlight assembly is a first surface;
the first limiting structure comprises a bending portion, which is bent toward the back plate side relative to the first middle frame side; the bending portion is stacked on the first surface, and is staggered from the first clamping portion in an extending direction of the first middle frame side; and a through hole is formed in the bending portion; and
the second limiting structure comprises a third limiting protrusion portion on the first surface, and the third limiting protrusion portion is in the through hole.