US 12,174,410 B2
Backlight module and display device
Bin Zhao, Guangdong (CN); Juncheng Xiao, Guangdong (CN); and Junling Liu, Guangdong (CN)
Assigned to TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
Appl. No. 17/758,168
Filed by TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed Jun. 24, 2022, PCT No. PCT/CN2022/101232
§ 371(c)(1), (2) Date Jun. 29, 2022,
PCT Pub. No. WO2023/236266, PCT Pub. Date Dec. 14, 2023.
Claims priority of application No. 202210643137.3 (CN), filed on Jun. 8, 2022.
Prior Publication US 2024/0192429 A1, Jun. 13, 2024
Int. Cl. F21V 8/00 (2006.01); G02F 1/13357 (2006.01); G02F 1/1368 (2006.01); G02F 1/137 (2006.01)
CPC G02B 6/005 (2013.01) [G02B 6/0068 (2013.01); G02F 1/133621 (2013.01); G02F 1/1368 (2013.01); G02F 1/137 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A backlight module, comprising:
a light guide plate, having a light-emitting surface divided into light-emitting units arranged in a plurality rows, and each of the light-emitting units comprising light emitting parts arranged in a plurality sub-rows;
a light strip, arranged at a lateral side of the light guide plate, comprising a plurality of light source groups respectively corresponding to the light-emitting units, each of the light source groups comprising a plurality of light sources respectively corresponding to the light emitting parts;
a backlight plate, arranged on the light-emitting surface of the light guide plate, and provided with a plurality of transparent hole units arranged in an array, wherein each of the light-emitting units corresponds to one row of the transparent hole units; and
a shutter layer, arranged on the backlight plate, provided with a plurality of shutter units corresponding to the transparent hole units, respectively,
wherein the light emitted by each of the light sources is transmitted through the light guide plate and then emitted from a corresponding one of the light emitting parts without changing the color, and each of the shutter units is configured to control whether light emitted from the light emitting parts and passing through the transparent hole units passes through the shutter layer.