公开(公告)号：US11790825B2

公开(公告)日：2023-10-17

申请号：US17295481

申请日：2021-04-20

Applicant: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Xiong Hu ,  Yu Wu ,  Haoran Li

IPC: G09G3/34 ,  H05B45/46 ,  H04N9/31 ,  G09G3/20

CPC classification number: G09G3/2018 ,  G09G3/3406 ,  G09G2320/0233 ,  G09G2320/064 ,  G09G2320/066 ,  G09G2320/0633 ,  G09G2330/021

Abstract: A backlight brightness control method, a backlight brightness control device, and a display equipment are provided. By using a constant current integrated circuit to input constant current to backlight sources in backlight partitions, uniformity of backlight brightness is allowed to be improved. By determining a target peak current inputted to the backlight sources in the backlight partitions according to a grayscale level of partition images, not only can the backlight brightness required by a high grayscale level be ensured, but fine adjustment of the backlight brightness under a low grayscale level can also be ensured.