公开(公告)号：US20220319450A1

公开(公告)日：2022-10-06

申请号：US17251896

申请日：2020-11-19

Applicant: TCL China Star Optoelectronics Technology Co., Ltd.

Inventor： Yan LI ,  Yu WU ,  Xiong HU ,  Haoran LI ,  Tao HE ,  Guangxing XIAO

IPC: G09G3/34

Abstract: A display device and a controlling method thereof are provided. The display device includes a display panel, a backlight unit, and a time schedule controller. The display panel is configured to display images. Areas where afterimages of dynamic images occur are identified according to comparison results of dither values. Tailing phenomenon of the dynamic images may be relieved by transmitting backlight data without brightness to a second backlight sub-area corresponding to where the afterimages occur. Furthermore, because frequency multiplication is not applied, risks of display instability will not increase.

公开(公告)号：US20240029627A1

公开(公告)日：2024-01-25

申请号：US17419078

申请日：2021-05-21

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

Inventor： Haoran LI ,  Xiong HU

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2360/16 ,  G09G2320/0626

Abstract: The present application provides a driving method, a driving device, and a display terminal of a display panel. The display panel includes light emitting elements. The driving method includes: obtaining a grayscale data of a displayed image; determining a target current level from preset multiple current levels according to the grayscale data; determining a pulse width modulation signal according to the grayscale data; and driving the light emitting elements to emit light according to the target current level and the pulse width modulation signal.

公开(公告)号：US20240021137A1

公开(公告)日：2024-01-18

申请号：US17280258

申请日：2021-03-12

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

Inventor： Xiong HU ,  Yu WU ,  Guangxing XIAO

IPC: G09G3/20 ,  G09G3/34 ,  G09G3/32

CPC classification number: G09G3/2096 ,  G09G3/342 ,  G09G3/32 ,  G09G2320/045 ,  G09G2320/064

Abstract: A method of preventing a backlight module from overheating and a display device are provided. The method can prevent backlight partitions from having a long-time high-brightness operation and causing the backlight module to overheat by obtaining a driving current of each backlight partition in the backlight module, judging whether a brightness of each backlight partition in the backlight module exceeds a reference brightness, and adjusting the brightness of each backlight partition that exceeds the reference brightness to a target brightness.