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公开(公告)号：US20250061863A1
公开(公告)日：2025-02-20
申请号：US18509362
申请日：2023-11-15
Inventor： Yizhuo ZHAO
Abstract: Liquid crystal display devices and backlight driving methods thereof are provided. A backlight module of the liquid crystal display device includes a light-emitting unit, a calculation unit, a comparison unit, and a control unit. The calculation unit calculates a first preset backlight brightness value of a backlight partition according to a partition average brightness value and a partition maximum brightness value of a corresponding display partition under a current frame display image. The comparison unit compares a second preset backlight brightness value of the backlight partition under a previous frame display image and the first preset backlight brightness value, and outputs a comparison result. The control unit outputs a first brightness driving value of the backlight partition under the current frame display image according to the comparison result. The light-emitting unit emits light in the backlight partition according to first brightness driving value.
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Patent Agency Ranking
公开(公告)号：US20220327984A1
公开(公告)日：2022-10-13
申请号：US17435043
申请日：2020-12-28
Inventor： Yizhuo ZHAO , Yuhua CHANG , Bin ZHAO
IPC: G09G3/20
Abstract: The driving method provided by the present application includes: detecting a refresh frequency of a display device based on a plurality of predicted frames to obtain a change rule of the refresh frequency; obtaining a current refresh frequency of the display device and a corresponding frame number information; predicting an expected timing when the display device switches the refresh frequency next time and an expected frequency value after switching according to the change rule, the current refresh frequency, and the corresponding frame number information; and performing a gray-scale compensation on the display device according to the expected frequency value and the expected timing.
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公开(公告)号：US20240296772A1
公开(公告)日：2024-09-05
申请号：US17618554
申请日：2021-11-23
Applicant: Huizhou China Star Optoelectronics Display Co., Ltd. , TCL China Star Optoelectronics Technology Co., Ltd.
Inventor： Yoongu KIM , Yizhuo ZHAO , Yuhua CHANG
IPC: G09G3/20
CPC classification number: G09G3/2007 , G09G2320/0247 , G09G2320/0271 , G09G2320/0626 , G09G2320/0693
Abstract: A method and an apparatus for adjusting a brightness of a display are provided. The method includes: acquiring a gray scale number and a working frequency; determining a first gray scale compensation value of a preset calibration area using a preset gray scale compensation mapping table; determining a second gray scale compensation value of a non-preset calibration area according to the first gray scale compensation value; controlling, according to the first gray scale compensation value, the preset calibration area for displaying; and controlling, according to the second gray scale compensation value, the non-preset calibration area for displaying.
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公开(公告)号：US20240046840A1
公开(公告)日：2024-02-08
申请号：US17422986
申请日：2021-05-31
Inventor： Yizhuo ZHAO , Qiusheng HUANG , Yuhua CHANG , Bin ZHAO
IPC: G09G3/20
CPC classification number: G09G3/2018 , G09G2340/0435 , G09G2320/0247 , G09G2320/0673 , G09G2320/0233 , G09G2330/021 , G09G2320/0276
Abstract: A display device, a driving method thereof, and a display equipment are provided. The display device includes a driving module. The present disclosure allows a display panel to maintain a same brightness for image display when the display panel refreshes images at different refresh rates by allowing the refresh rates to correspond to gamma voltages and adjusting the gamma voltages to adjust a brightness of the display panel when a current refresh rate of the display panel changes. Serious flickers of the display device caused by the display device being switched at different refresh rates in a short time can be prevented.
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公开(公告)号：US20240265844A1
公开(公告)日：2024-08-08
申请号：US18305399
申请日：2023-04-24
Inventor： Yizhuo ZHAO
IPC: G09G3/20
CPC classification number: G09G3/2092 , G09G2320/0247 , G09G2320/0626 , G09G2340/0435
Abstract: A display panel, a control method thereof, and an electronic terminal are provided. The control method includes: determining whether a display frequency of the display panel is converted in each of x frames, wherein x is a positive integer greater than or equal to 2; and in response to determining that the display frequency of the display panel is converted in each of the x frames, changing a common voltage from a first voltage gradually to a second voltage in a plurality of frames, from at least a last frame in the x frames.
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公开(公告)号：US20230386378A1
公开(公告)日：2023-11-30
申请号：US17281620
申请日：2021-03-15
Inventor： Yizhuo ZHAO , Qiusheng HUANG , Yuhua CHANG , Bin ZHAO
IPC: G09G3/20
CPC classification number: G09G3/20 , G09G2320/0626 , G09G2320/0233 , G09G2320/0247
Abstract: The present application provides a luminance compensation method, a luminance compensation device, and a display device. Luminance compensation is performed on at least part of consecutive frames satisfying a condition of the luminance compensation, and the luminance compensation is not performed on the consecutive frames not satisfying the condition of the luminance compensation, thereby preventing a problem that the luminance compensation applied to a display device with free synchronization technology of traditional technology causing display of special images to deteriorate.
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