BACKLIGHT BRIGHTNESS ADJUSTING METHOD AND DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE

摘要

The disclosure discloses a backlight brightness adjusting method and device and a liquid crystal display device. In the backlight brightness adjusting method, grayscale characteristic values of respective primary colors in an image to be displayed are obtained, that is, contributions of the respective primary colors to an overall grayscale are obtained, to thereby obtain the grayscale contributions of the respective primary colors in the image to be displayed respectively; a backlight value is determined by giving different coefficients to the grayscale characteristic values of the respective primary colors; and finally an output of a backlight driver is adjusted according to the backlight value to thereby adjust backlight brightness.

主权项

1. A backlight brightness adjusting method, applicable to a liquid crystal display device, the method comprising:
obtaining grayscale characteristic values of respective primary colors in an image to be displayed, wherein the grayscale characteristic values of the respective primary colors characterize contributions of grayscales of the respective primary colors to a grayscale of the image to be displayed; determining a backlight value according to the grayscale characteristic values of the respective primary colors, and coefficients corresponding to the respective primary colors; and adjusting backlight brightness according to the backlight value.