US 12,265,298 B2
Backlight module and display device
Guangkun Liu, Hubei (CN); and Fancheng Liu, Hubei (CN)
Assigned to WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Hubei (CN)
Appl. No. 17/758,971
Filed by WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Hubei (CN)
PCT Filed Jun. 30, 2022, PCT No. PCT/CN2022/102610
§ 371(c)(1), (2) Date Jul. 17, 2022,
PCT Pub. No. WO2023/236283, PCT Pub. Date Dec. 14, 2023.
Claims priority of application No. 202210642027.5 (CN), filed on Jun. 7, 2022.
Prior Publication US 2024/0176186 A1, May 30, 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 1/133612 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A backlight module, comprising a light-emitting substrate, wherein the light-emitting substrate comprises:
a substrate;
an array layer disposed on the substrate and comprising a plurality of photosensitive units and switch units; and
a plurality of light-emitting chips disposed on a side of the array layer away from the substrate and staggered from the photosensitive units, wherein the light-emitting chips are electrically connected to at least one of the switch units;
wherein the photosensitive units are configured to sense light of a first wavelength, and the light-emitting substrate further comprises: a selective light transmission layer disposed on the side of the array layer away from the substrate and between the light-emitting chips, wherein the selective light transmission layer overlaps the photosensitive unit, allows for transmission of light of a second wavelength, and blocks light other than the light of the second wavelength, wherein the second wavelength is in a band corresponding to the first wavelength.