US 12,487,488 B2
Backlight module and display device including the same
Fu Li, Hubei (CN); and Yan Cheng, Hubei (CN)
Assigned to WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Hubei (CN)
Appl. No. 18/247,635
Filed by WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Hubei (CN)
PCT Filed Mar. 24, 2023, PCT No. PCT/CN2023/083896
§ 371(c)(1), (2) Date Jan. 14, 2025,
PCT Pub. No. WO2024/178762, PCT Pub. Date Sep. 6, 2024.
Claims priority of application No. 202310188115.7 (CN), filed on Feb. 28, 2023.
Prior Publication US 2025/0143059 A1, May 1, 2025
Int. Cl. G02F 1/13357 (2006.01); G02F 1/1335 (2006.01); H10H 29/24 (2025.01); H10H 29/855 (2025.01)
CPC G02F 1/133603 (2013.01) [G02F 1/133607 (2021.01); H10H 29/24 (2025.01); H10H 29/855 (2025.01)] 14 Claims
OG exemplary drawing
 
1. A backlight module, comprising:
a substrate;
a light source assembly, disposed on the substrate, and comprising a plurality of light-emitting chips disposed at intervals; and
a light guide plate, disposed on the light source assembly;
wherein a surface of the light guide plate facing the substrate is provided with a plurality of grooves where one of the light-emitting chips is correspondingly disposed; a bottom of each of the grooves is provided with a plurality of first concave parts disposed at intervals, and each of the first concave parts is defined with an arc surface recessed towards a direction away from the substrate; a side wall of each of the grooves is provided with a plurality of second concave parts disposed at intervals, and each of the second concave parts is defined with an arc surface recessed towards a direction away from a corresponding one of the light-emitting chips;
wherein a reflective layer is disposed between the substrate and the light guide plate between adjacent light-emitting chips; a surface of the light guide plate opposite to the reflective layer is provided with a plurality of protrusion parts disposed at intervals, and each of the protrusion parts is defined with an arc surface protruded towards a direction facing the substrate.