US 12,404,995 B2
Backlight module and display device
Juncheng Xiao, Shenzhen (CN); Yan Li, Shenzhen (CN); Bin Zhao, Shenzhen (CN); and Ji Li, Shenzhen (CN)
Assigned to TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Shenzhen (CN)
Appl. No. 17/290,068
Filed by TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Shenzhen (CN)
PCT Filed Mar. 15, 2021, PCT No. PCT/CN2021/080715
§ 371(c)(1), (2) Date Apr. 29, 2021,
PCT Pub. No. WO2022/170657, PCT Pub. Date Aug. 18, 2022.
Claims priority of application No. 202110185277.6 (CN), filed on Feb. 10, 2021.
Prior Publication US 2023/0139020 A1, May 4, 2023
Int. Cl. H01L 25/075 (2006.01); F21V 23/00 (2015.01); G09G 3/34 (2006.01); F21Y 115/10 (2016.01)
CPC F21V 23/005 (2013.01) [G09G 3/3426 (2013.01); H01L 25/0753 (2013.01); F21Y 2115/10 (2016.08); G09G 2300/0426 (2013.01); H05K 2201/10106 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A backlight module, comprising:
a substrate;
a metal layer disposed on the substrate, the metal layer comprising a plurality of signal lines and a plurality of first signal connection lines extending along a first direction, wherein the signal lines and the first signal connection lines are horizontally aligned with each other on a same plane on a front side of the substrate and on a same plane on a back side of the substrate; and
a plurality of light-emitting control structures disposed on the metal layer and arranged in a plurality of columns, wherein one of the signal lines is disposed on at least one side of each column of the light-emitting control structures, the light-emitting control structures in each column are connected to a corresponding one of the signal lines, and any two adjacent ones of the light-emitting control structures in each column of the light-emitting control structures are connected through one of the first signal connection lines,
wherein each of the light-emitting control structures comprises a controller and at least one light-emitting unit, each of the controllers in each column of the light-emitting control structures and the corresponding signal line are electrically connected to the corresponding at least one light-emitting unit, all the controllers in each column of the light-emitting control structures are directly electrically connected to each other through a same-layer electrical connection path established by one of the first signal connection lines across each column of the light-emitting control structures, and the controllers are arranged on a same side in each column of the light-emitting control structures,
wherein an orthographic projection of the signal lines does not overlap with an orthographic projection of the light-emitting control structures on the substrate.