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公开(公告)号：US20250118272A1
公开(公告)日：2025-04-10
申请号：US18401326
申请日：2023-12-29
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.
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公开(公告)号：US20240257771A1
公开(公告)日：2024-08-01
申请号：US18139983
申请日：2023-04-27
Inventor： Xinhong CHEN , Yun ZHANG , Ling XU
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.
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公开(公告)号：US20230162650A1
公开(公告)日：2023-05-25
申请号：US17427160
申请日：2021-05-27
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.
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4.发明公开公开(公告)号：US20240046835A1
公开(公告)日：2024-02-08
申请号：US17600404
申请日：2021-08-25
Inventor： Yun ZHANG
IPC: G09G3/20
CPC classification number: G09G3/2003 , G09G2320/0233 , G09G2320/0242 , G09G2360/16 , G09G2320/0285
Abstract: The present application discloses a display device brightness compensation look-up table obtaining method. The method includes a parameter reading step, an initial grayscale brightness detection step, a compensation region brightness detection step, a compensation data obtaining step, and a compensation look-up table generation step. The above method solves a technical issue that conventional demura technologies cannot uniform brightness of the display panel to result in poor quality of the display panel.
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