BACKLIGHT BRIGHTNESS ADJUSTING METHOD AND DEVICE, AND LIQUID CRYSTAL DISPLAY DEVICE
First Claim
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.
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Abstract
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.
24 Citations
20 Claims
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1. A backlight brightness adjusting method, applicable to a liquid crystal display device, the method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A backlight brightness adjusting device, applicable to a liquid crystal display device, the backlight brightness adjusting device comprising:
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a memory; and one or more processors, wherein the memory stores one or more computer readable program codes, and the one or more processors are configured to execute the one or more computer readable program codes to perform; 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. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A liquid crystal display device, comprising a backlight brightness adjusting device comprising:
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a memory; and one or more processors, wherein the memory stores one or more computer readable program codes, and the one or more processors are configured to execute the one or more computer readable program codes to perform; 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. - View Dependent Claims (18, 19, 20)
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Specification