公开(公告)号：US20250118272A1

公开(公告)日：2025-04-10

申请号：US18401326

申请日：2023-12-29

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

Inventor： Xinhong CHEN ,  Yun ZHANG ,  Ling XU ,  Wenli WANG ,  Lu LIU ,  Yuying WANG

IPC: G09G3/36

Abstract: The present disclosure discloses a liquid crystal display panel and a compensation method thereof. The compensation method firstly acquires a plurality of consecutive and alternating odd-numbered frame grayscale data and even-numbered frame grayscale data, then determines a minimum grayscale difference, and determines a gamma voltage difference corresponding to the grayscale difference according to a curve of a relation between grayscales and gamma voltages, followed by obtaining a correction value for a common voltage based on the gamma voltage difference. The flicker phenomena can be improved by adjusting the common voltage only once with the correction value.

公开(公告)号：US20250095533A1

公开(公告)日：2025-03-20

申请号：US18964427

申请日：2024-11-30

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

Inventor： Xinhong CHEN ,  Wenli WANG ,  Kaiyong YI ,  Xiaojian KANG

IPC: G09G3/20

Abstract: A brightness correcting method of a display panel and a brightness correcting device are disclosed. The method divides a displayed image of the display panel into a first area and a plurality of second areas disposed surrounding the first area. A brightness correction factor of each of the second areas is obtained according to a brightness of the first area and a brightness of each of the second areas. An optical compensation value is adjusted according to the brightness correction factor. The method corrects a brightness of the display panel to allow uniformity of overall brightness of the display panel to meet requirements.

公开(公告)号：US20250131890A1

公开(公告)日：2025-04-24

申请号：US17799661

申请日：2022-07-22

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

Inventor： Ling XU ,  Xinhong CHEN

IPC: G09G3/34 ,  G09G3/20

Abstract: The present application discloses a display compensation method and a liquid crystal display device. The display compensation method adjusts backlight brightness corresponding to backlight partitions by a backlight compensation table, therefore can roughly adjust a brightness difference of the display panel, and can also improve a contrast of a screen image, which advantages for guaranteeing grayscale transition continuity of a screen image; also, adjusting by a display compensation table adjusts grayscale data corresponding to the display partitions can achieve fine adjustment of the brightness difference of the display panel such that uniformity of the display brightness can be further increased.

公开(公告)号：US20250078715A1

公开(公告)日：2025-03-06

申请号：US18575204

申请日：2023-10-11

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

Inventor： Xinhong CHEN ,  Zhaopeng XU ,  Ling XU

IPC: G09G3/20

Abstract: The present disclosure provides a display compensation method for a display panel, a method for generating a compensation data table, and a display device. A first display luminance corresponding to a first to-be-compensated sub-pixel set and a second display luminance corresponding to a second to-be-compensated sub-pixel set are respectively compensated by corresponding compensation data tables in different viewing angles. A plurality of first compensation data tables corresponding to the first viewing angle and a plurality of second compensation data tables corresponding to the second viewing angle are used to compensate for the first to-be-compensated sub-pixel set and the second to-be-compensated sub-pixel sets adjacent with each other.

公开(公告)号：US20240257771A1

公开(公告)日：2024-08-01

申请号：US18139983

申请日：2023-04-27

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

Inventor： Xinhong CHEN ,  Yun ZHANG ,  Ling XU

IPC: G09G3/34 ,  G09G3/20

CPC classification number: G09G3/342 ,  G09G3/2007 ,  G09G3/2092 ,  G09G2310/08 ,  G09G2320/0247 ,  G09G2340/16

Abstract: A backlight driving method is provided. The method includes: 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.

公开(公告)号：US20230162650A1

公开(公告)日：2023-05-25

申请号：US17427160

申请日：2021-05-27

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

Inventor： Yun ZHANG ,  Xinhong CHEN

IPC: G09G3/20

CPC classification number: G09G3/2092 ,  G09G2320/0276 ,  G09G2320/0233

Abstract: A display panel driving method, a display device, and a driving device are provided. The method could determine an effective driving voltage value of a target pixel when the target display content is being displayed according to a standard gamma value, a standard driving voltage, and a driving voltage value of an interval endpoint and a corresponding mura removing parameter of a target driving voltage interval. A display panel is driven according to the effective driving voltage value of all the target pixels. This effectively alleviates the display inequality issue even if a common gamma value is applied.