Display panel brightness adjustment method and display panel brightness adjustment system
A display panel and brightness adjustment technology, applied in static indicators, instruments, etc., can solve the problem that the brightness uniformity of the OLED display panel is difficult to reach the preset value, and achieve the effect of fast and accurate adjustment
Active Publication Date: 2021-01-01
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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- Application Information
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Problems solved by technology
[0005] At present, there are certain requirements for the display brightness uniformity of the display panel. For example, the display brightness of each area of the OLED display panel is affected by the light-emitting (EL) material, the uniformity of the backplane, the aging of the TFT, and the threshold voltage (Vth) drift of the driving TFT, etc. Factors, in the actual production process, the display brightness uniformity of the OLED display panel is difficult to reach the preset value
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[0035] In order to further illustrate the technical means adopted by the present invention and its effects, the following describes in detail in conjunction with preferred embodiments of the present invention and accompanying drawings.
[0036] see figure 1 and figure 2 , the present invention provides a method for adjusting brightness of a display panel, comprising the following steps:
[0037] Step S1, divide the display panel into M*N display areas, set M and N as positive integers, and obtain the theoretical gray scale of each display area according to the preset gamma curve and the expected brightness value of each display area value;
[0038] Step S2, drive the display panel according to the theoretical grayscale value of each display area to obtain the actual brightness value of each display area;
[0039]Step S3. Determine whether the actual brightness value of each display area meets the preset brightness uniformity requirement; when the actual brightness value of...
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The invention provides a display panel brightness adjusting method and a display panel brightness adjusting system. The method comprises steps of driving the display panel through the theoretical grayscale value of each display area so as to obtain an actual brightness value of each display area; when the actual brightness value of each display area does not meet the preset brightness uniformityrequirement, obtaining a compensation gray scale value of each display area according to a difference value between the expected brightness value and the actual brightness value of each display area to drive the display panel and obtaining the latest actual brightness value of each display area; if the latest actual brightness value of each display area does not meet the preset brightness uniformity requirement, repeatedly obtaining a compensation gray scale value through the difference value between the expected brightness value and the latest actual brightness value to drive the display panel, and obtaining the latest actual brightness value of each display area until the latest actual brightness value of each display area reaches a preset brightness uniformity requirement, thereby rapidly adjusting the brightness uniformity of the display panel.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a display panel brightness adjustment method and a display panel brightness adjustment system. Background technique [0002] Thin Film Transistor (TFT) is the main driving element in current Liquid Crystal Display (LCD) and Active Matrix Organic Light-Emitting Diode (AMOLED). It is related to the display performance of the flat panel display device. [0003] Most of the liquid crystal displays currently on the market are backlight liquid crystal displays, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is to pour liquid crystal molecules between the thin film transistor array substrate (ThinFilm Transistor Array Substrate, TFT Array Substrate) and the color filter (ColorFilter, CF) substrate, and apply pixel voltage on the two substrates respectively. and the common voltage, through the electric fie...
Claims
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IPC IPC(8): G09G3/3208G09G3/34G09G3/36
CPCG09G3/3208G09G3/3406G09G3/3607G09G2320/0613G09G2320/0626
Inventor 陈小龙
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD