US 12,131,710 B2
Backlight driving method and display device
Xinhong Chen, Guangdong (CN); Yun Zhang, Guangdong (CN); and Ling Xu, Guangdong (CN)
Assigned to TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Shenzhen (CN)
Filed by TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD., Guangdong (CN)
Filed on Apr. 27, 2023, as Appl. No. 18/139,983.
Claims priority of application No. 202310129322.5 (CN), filed on Jan. 31, 2023.
Prior Publication US 2024/0257771 A1, Aug. 1, 2024
Int. Cl. G09G 3/34 (2006.01); G09G 3/20 (2006.01)
CPC G09G 3/342 (2013.01) [G09G 3/2007 (2013.01); G09G 3/2092 (2013.01); G09G 2310/08 (2013.01); G09G 2320/0247 (2013.01); G09G 2340/16 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A backlight driving method, comprising:
determining a first duration of a first active pulse phase in a backlight driving signal corresponding to a target frame of a to-be displayed picture in a display panel, based on a target duty ratio and a first period corresponding to a target previous frame; wherein the target previous frame is a frame preceding the target frame, and the backlight driving signal is configured to drive a backlight of the display panel; and
determining a second duration based on a maximum period corresponding to a frame at a lowest refresh frequency of the display panel and the first period, to delay a start time of the first active pulse phase based on the second duration;
wherein determining the second duration based on the maximum period corresponding to the frame at the lowest refresh frequency of the display panel and the first period, to delay the start time of the first active pulse phase based on the second duration comprises:
determining the second duration based on a difference between the maximum period and the first period, to delay the start time of the first active pulse phase based on the second duration.