Backlight brightness compensation method and display device
A technology of backlight brightness and compensation method, used in static indicators, cathode ray tube indicators, instruments, etc., can solve the problems of image distortion, low backlight brightness, clipping, etc.
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Embodiment 1
[0078] Such as figure 1 As shown, the backlight brightness compensation method in this embodiment includes:
[0079] Receive and determine the original grayscale of each pixel according to the input image; specifically, confirm the original grayscale of the R\G\B three sub-pixels in each pixel and the corresponding pixel brightness according to the input image;
[0080] Determine the brightness of the backlight according to the input image; this embodiment is used in a display device with 0D backlight (global dimming backlight). It can provide uniform brightness, so it is necessary to determine a backlight brightness; the backlight outputs light according to the backlight brightness;
[0081] According to compensation factor f com performing linear compensation on the original gray scale to obtain the compensated gray scale of each pixel, and judging whether the compensated gray scale of each pixel is greater than the maximum gray scale of the display device,
[0082] If no...
Embodiment 2
[0118] Such as Figure 3-Figure 4 As shown, the display device of this embodiment includes a backlight and a display panel 2 located on the light emitting side of the backlight and including a pixel matrix, and also includes:
[0119] The video conversion unit 6 is used to receive the input image and determine the original gray scale of the pixel; receive the input image and convert it into the pixel brightness corresponding to each pixel in the pixel matrix and the original gray scale displayed; the video conversion unit 6 can be a video conversion circuit or an already integrated video converter;
[0120] The backlight brightness determination unit 4 is used to determine the backlight brightness according to the input image; in the specific determination process, the brightness of the backlight is controlled by adjusting the control value of the backlight brightness; the specific physical structure of the backlight brightness determination unit can be a specific logic A cir...
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