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US 10,706,794 B2Granted
Adjustment method and device for gamma circuit
AssigneeBoe Technology Group Co., Ltd.
InventorWenxiu Zhu
Life of this patent
Estimating the term…
Abstract
The present disclosure relates to an adjustment method and device for a gamma circuit. In the gamma correction of the present disclosure, the brightness of the sub-pixel of each color in the white light is determined according to the brightness and color coordinates of the white light and the color coordinates of the sub-pixel of each color, the correspondence relationship between the brightness of the sub-pixel of each color in the white light and the voltage values of the sub-pixel is established, the target value of the voltage of the sub-pixel of each color is found from the correspondence relationship according to the brightness of the sub-pixel of each color in the white light corresponding to any grayscale, and then the voltages of red, green and blue sub-pixels are adjusted to the target values.
Claims8
An adjustment method for a gamma circuit, comprising:
- determining a brightness and color coordinates of a white light corresponding to voltage values of a sub-pixel set comprising a red sub-pixel, a green sub-pixel and a blue sub-pixel;
- for a sub-pixel of each color in the sub-pixel set, determining color coordinates of the sub-pixel of the color corresponding to different voltage values of the sub-pixel of the color;
- according to the determined brightness and the determined color coordinate of the white light and the determined color coordinates of the sub-pixel of each color, determining a correspondence relationship between the brightness of the sub-pixel of each color in the white light and the voltage value of the sub-pixel of each color;
- for any grayscale, according to the brightness of the white light corresponding to the grayscale, determining the brightness of the sub-pixel of each color in the white light corresponding to the grayscale;
- and
- according to the determined correspondence relationship between the brightness of the sub-pixel of each color in the white light and the voltage values of the sub-pixel of each color, determining a target voltage value of the sub-pixel of each color corresponding to the brightness of the sub-pixel of each color in the white light which corresponds to the grayscale,
- wherein for any grayscale, according to the brightness of the white light corresponding to the grayscale, the step of determining the brightness of the sub-pixel of each color in the white light corresponding to the grayscale, comprises:
- for any grayscale, determining the brightness of white light corresponding to the gray scale;
- according to the brightness of white light corresponding to the grayscale, pre-set color coordinates of the grayscale, and the color coordinate coefficients of the sub-pixel of each color corresponding to the grayscale, determining the brightness of the sub-pixel of each color in the white light corresponding to the grayscale by performing a matrix multiplication calculation.
6 more elements
An adjustment device for a gamma circuit, comprising:
- at least one processing unit and at least one storage unit, wherein the storage unit has program codes stored therein, which when executed by the processing unit, cause the processing unit to perform:
- determining a brightness and color coordinates of a white light corresponding to voltage values of a sub-pixel set comprising a red sub-pixel, a green sub-pixel and a blue sub-pixel;
- for a sub-pixel of each color in the sub-pixel set, determining color coordinates of the sub-pixel of the color corresponding to different voltage values of the sub-pixel of the color;
- according to the determined brightness and the color coordinate of the white light and the determined color coordinates of the sub-pixel of each color, determining a correspondence relationship between the brightness of the sub-pixel of each color in the white light and the voltage value of the sub-pixel of each color;
- for any grayscale, according to the brightness of the white light corresponding to the grayscale, determining the brightness of the sub-pixel of each color in the white light corresponding to the grayscale;
- and
- according to the determined correspondence relationship between the brightness of the sub-pixel of each color in the white light and the voltage values of the sub-pixel of each color, determining a target voltage value of the sub-pixel of each color corresponding to the brightness of the sub-pixel of each color in the white light which corresponds to the grayscale,
- when determining the brightness of the sub-pixel of each color in the white light corresponding to the grayscale for any grayscale according to the brightness of the white light corresponding to the grayscale, determining the brightness of white light corresponding to the grayscale;
- according to the brightness of white light corresponding to the grayscale, pre-set color coordinates of the grayscale, and the color coordinate coefficients of the sub-pixel of each color corresponding to the grayscale, determining the brightness of the sub-pixel of each color in the white light corresponding to the grayscale by performing a matrix multiplication calculation.
6 more elements
Dependencies are inferred from the claim text.