US 12,072,576 B2
Backlight module and display device
Weiheng Yang, Guangdong (CN); Gang Liu, Guangdong (CN); and Wei Wang, Guangdong (CN)
Assigned to TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
Appl. No. 17/622,774
Filed by TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
PCT Filed Dec. 17, 2021, PCT No. PCT/CN2021/139290
§ 371(c)(1), (2) Date Dec. 24, 2021,
PCT Pub. No. WO2023/103051, PCT Pub. Date Jun. 15, 2023.
Claims priority of application No. 202111509965.X (CN), filed on Dec. 10, 2021.
Prior Publication US 2024/0036397 A1, Feb. 1, 2024
Int. Cl. G02F 1/13357 (2006.01); G02F 1/1335 (2006.01)
CPC G02F 1/133606 (2013.01) [G02F 1/133603 (2013.01); G02F 1/133607 (2021.01)] 16 Claims
OG exemplary drawing
 
1. A backlight module, comprising:
a plurality of light-emitting units, disposed at intervals with one another, wherein a slit is between two adjacent light-emitting units;
an optical film, disposed at a side of the light-emitting unit; and
a concentrating structure, disposed at a side of the optical film close to the light-emitting unit and arranged in an area opposite to the slit, wherein the concentrating structure comprises a plurality of protrusions, wherein the size of the plurality of protrusions is different from one another.