US 12,295,077 B2
Intelligent adjustment method and system for LED backlight drive, device and storage medium
Xi Tu, Shenzhen (CN); Chenglong Zhang, Shenzhen (CN); and Junjie Zheng, Shenzhen (CN)
Assigned to HYASIC INCORPORATION, Cupertino, CA (US)
Filed by HYASIC INCORPORATION, Cupertino, CA (US)
Filed on Jun. 7, 2023, as Appl. No. 18/206,636.
Claims priority of application No. 202210367425.0 (CN), filed on Apr. 8, 2022.
Prior Publication US 2023/0328859 A1, Oct. 12, 2023
Int. Cl. H05B 45/30 (2020.01); H05B 45/325 (2020.01); H05B 45/355 (2020.01); H05B 45/48 (2020.01)
CPC H05B 45/355 (2020.01) [H05B 45/325 (2020.01); H05B 45/48 (2020.01)] 14 Claims
OG exemplary drawing
 
1. An intelligent adjustment method for an LED backlight drive used for performing intelligent adjustment on the drive of an LED module, wherein the LED module comprises multiple LED substrings; an anode of each LED substring is connected to a power supply, a cathode of each LED substring is respectively connected to a corresponding channel of an LED drive circuit, and each LED substring comprises a plurality of LED units connected in series; wherein the method comprises:
acquiring optimized channel current on each of other LED substring branches other than a non-maximum conduction branch;
calculating, according to the optimized channel current, a number of cycles of a conducting PWM of each LED substring branch in one frame of a frame synchronizing signal as a number of cycles of an optimized conducting PWM; and
adjusting a channel current of each LED substring branch to be a corresponding optimized channel current, and adjusting the number of cycles of conducting PWM of each LED substring branch to be the number of cycles of the optimized conducting PWM.