公开(公告)号：US11545072B2

公开(公告)日：2023-01-03

申请号：US17600152

申请日：2021-06-21

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

Inventor： Jinfeng Liu ,  Qingsheng Lan

IPC: G09G3/20

Abstract: A driving device of a display panel and a display device are provided. A source driver expands display data of a low-resolution image to be displayed in a first working mode, and cooperates with the source driver to receive and processes display data of a high-resolution display image in a second working mode, which makes the driving device of the display panel has good compatibility.

公开(公告)号：US11817032B1

公开(公告)日：2023-11-14

申请号：US18193883

申请日：2023-03-31

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

Inventor： Weifeng Chen ,  Qingsheng Lan

IPC: G09G3/20

CPC classification number: G09G3/2074 ,  G09G2300/0814 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/08

Abstract: The present invention discloses a display device and a display method. A voltage adjustment circuit is configured to compare whether a difference between absolute values of a first data voltage signal and a second data voltage signal at a preset moment exceeds a set threshold range and output a control signal to a voltage adjustment circuit when the difference exceeds the set threshold range. Thus, a first data latch and update signal of a first source driver chip is adjusted by the voltage adjustment circuit, or a second data latch and update signal of a second source driver chip is adjusted, so that the first data voltage signal and the second data voltage signal are respectively output to a first data line and a second data line at a same time.

公开(公告)号：US11721301B1

公开(公告)日：2023-08-08

申请号：US17897333

申请日：2022-08-29

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

Inventor： Qingsheng Lan ,  Youngil Ban

IPC: G09G3/20 ,  G09G3/36

CPC classification number: G09G3/3688 ,  G09G2310/0291 ,  G09G2310/08

Abstract: A charging compensation device includes: a timing control module configured to send a display data and a current row number information of a display panel; a driving module electrically connected to the timing control module, configured to divide the display data into at least two charging intervals according to a received row number information, and configured to determine a plurality of charging currents according to the at least two charging intervals, wherein each of the charging intervals corresponds to the display data of multiple rows of the pixel units, and distances between the pixel units corresponding to each of the charging intervals and the driving module are different; and an output module electrically connected to the driving module and configured to charge the display panel according to the plurality of charging currents.

公开(公告)号：US11978408B2

公开(公告)日：2024-05-07

申请号：US16960556

申请日：2020-06-05

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

Inventor： Fuyi Wang ,  Fengcheng Xu ,  Qingsheng Lan ,  Jinfeng Liu

IPC: G09G3/34 ,  G09G3/20 ,  G09G3/36

CPC classification number: G09G3/342 ,  G09G3/2022 ,  G09G3/36 ,  G09G2320/064

Abstract: A backlight unit, a control method thereof, and a liquid crystal display device are provided. The control method includes following steps: obtaining backlight data corresponding to each of the partitions, the backlight data including multiple bits of data; dividing a frame of a lighting process of each light-emitting unit of the partitions into a plurality of sub-fields having different durations, wherein each of the sub-fields corresponds to one of the bits of data; and outputting the sub-fields having different durations corresponding to each of the partitions in a preset order.

公开(公告)号：US11776493B2

公开(公告)日：2023-10-03

申请号：US16960557

申请日：2020-05-14

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

Inventor： Qingsheng Lan ,  Fuyi Wang

IPC: G09G3/34 ,  G09G3/36

CPC classification number: G09G3/3426 ,  G09G3/36 ,  G09G2300/0819 ,  G09G2310/08 ,  G09G2320/0233

Abstract: A backlight module and a display device are provided. The backlight module includes a backlight and a driving circuit for driving the backlight. In the driving circuit corresponding to at least one backlight unit in the backlight, a data signal input module is configured for inputting a first data signal to a first point during a detection stage, and inputting a compensated second data signal to the first point according to a threshold voltage detected by a detection module during a display stage. The present invention improves uniformity of light emission of the backlight module.