US 11,877,365 B2
LED backlight driving circuit, backlight module and liquid crystal display device
Kaifeng Zhou, Guangdong (CN)
Assigned to TCL China Star Optoelectronics Technology Co., Ltd., Shenzhen (CN)
Appl. No. 17/048,636
Filed by TCL China Star Optoelectronics Technology Co., Ltd., Guangdong (CN)
PCT Filed Aug. 10, 2020, PCT No. PCT/CN2020/108048
§ 371(c)(1), (2) Date Oct. 19, 2020,
PCT Pub. No. WO2022/007098, PCT Pub. Date Jan. 13, 2022.
Claims priority of application No. 202010647701.X (CN), filed on Jul. 7, 2020.
Prior Publication US 2023/0113456 A1, Apr. 13, 2023
Int. Cl. H05B 45/34 (2020.01); H05B 45/54 (2020.01); F21V 8/00 (2006.01)
CPC H05B 45/34 (2020.01) [G02B 6/0051 (2013.01); G02B 6/0053 (2013.01); G02B 6/0055 (2013.01); G02B 6/0073 (2013.01); H05B 45/54 (2020.01)] 19 Claims
OG exemplary drawing
 
1. A light-emitting diode (LED) backlight driving circuit, comprising M LED light-emitting unit groups connected in series, each of the LED light-emitting unit groups comprising N LED light-emitting units connected in parallel, where both N and M are an integer greater than 1,
wherein each of the LED light-emitting units is connected in series with at least a variable resistor with variable resistance for balancing a voltage difference.