Display device and driving method thereof
AssigneeLG Display Co., Ltd.
InventorMin Cheol Kim
Life of this patent
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Abstract
A display device includes a timing controller for calculating an average luminance for each subpixel with respect to an input image, calculating afterimage influence for each subpixel for determining a possibility of causing afterimage for each subpixel position on the basis of the average luminance, and deriving a compensation gain for each subpixel on the basis of the afterimage influence for each subpixel to provide the input image as a compensated image, a data driver for outputting a data voltage on the basis of the compensated image output from the timing controller, and a display panel for displaying an image on the basis of the data voltage.
Claims7
A display device, comprising:
- a timing controller for calculating an average luminance for each subpixel with respect to an input image, calculating afterimage influence for each subpixel for determining a possibility of causing afterimage for each subpixel position on the basis of the average luminance, and deriving a compensation gain for each subpixel on the basis of the afterimage influence for each subpixel to provide the input image as a compensated image;
- a data driver for outputting a data voltage on the basis of the compensated image output from the timing controller;
- and
- a display panel for displaying an image on the basis of the data voltage,
- wherein the timing controller is configured to provide the input image as the compensated image by weighting the compensation gain for each subpixel on the basis of a normalized luminance to derive a total gain corresponding to gains for positions of all pixels included in the input image, and commonly applying the total gain to all the pixels.
A method of driving a display device, comprising:
- calculating an average luminance for each subpixel with respect to an input image;
- calculating afterimage influence for each subpixel for determining a possibility of causing afterimage for each subpixel position on the basis of the average luminance;
- providing the input image as a compensated image by deriving and applying a compensation gain for each subpixel on the basis of the afterimage influence for each subpixel;
- and
- displaying an image on the basis of the compensated image,
- wherein the providing of the input image as a compensated image comprises weighting the compensation gain for each subpixel on the basis of a normalized luminance to derive a total gain corresponding to gains for positions of all pixels included in the input image, and commonly applying the total gain to all the pixels.
Dependencies are inferred from the claim text.