US 11,982,901 B2
Backlight module and display device thereof
Yuanzhi Xie, Huizhou (CN); and Chao Liu, Huizhou (CN)
Assigned to HUIZHOU CHINA STAR OPTOELECTRONICS DISPLAY CO., LTD., Huizhou (CN)
Appl. No. 17/771,920
Filed by HUIZHOU CHINA STAR OPTOELECTRONICS DISPLAY CO., LTD., Huizhou (CN)
PCT Filed Apr. 13, 2022, PCT No. PCT/CN2022/086655
§ 371(c)(1), (2) Date Apr. 26, 2022,
PCT Pub. No. WO2023/184582, PCT Pub. Date Oct. 5, 2023.
Claims priority of application No. 202210349744.9 (CN), filed on Apr. 2, 2022.
Prior Publication US 2023/0314871 A1, Oct. 5, 2023
Int. Cl. G02F 1/13357 (2006.01); F21V 8/00 (2006.01)
CPC G02F 1/133603 (2013.01) [G02B 6/0025 (2013.01); G02F 1/133606 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A backlight module, comprising:
a base;
a light emission assembly comprising a plurality of light emission units disposed on a first side of the base; and
a light guide plate disposed on the first side of the base;
wherein the light guide plate comprises a plurality of first light diffusing portions, and each of the first light diffusing portions accommodates at least one of the light emission units to diffuse light emitted from the light emission units;
wherein a first side of the light guide plate facing the base is bonded to the base;
wherein the first light diffusing portions comprises a plurality of first recesses defined in the first side of the light guide plate, each of the first recesses at least corresponds to one of the light emission units to accommodate the corresponding one of the light emission units, wherein a first light diffusing surface is disposed on a side of each of the first recesses facing a corresponding one of the light emission units, and the first light diffusing surface is disposed at an interval from a corresponding one of the light emission units;
wherein the first light diffusing portion further comprises second recesses defined in a second side of the light guide plate opposite to the first side, the second recesses are defined to correspond to the first recesses, and an inner wall of the second recess is defined as a second light diffusing surface.