Multi-Color Display Device and Driving Method Thereof
First Claim
1. A display device comprising:
- a plurality of pixels, wherein each pixel comprises a first color pixel, a second color pixel, a third color pixel, and a white color pixel;
a signal processor configured to generate a white color output image signal based on a first, a second, and a third color input image signal, generate a white color temperature correcting constant based on the white color output image signal, and generate first color, second color, and third color output image signals that correct the first, second, and third color input image signals based on the white color temperature correcting constant; and
a data driver configured to convert the output image signals to a plurality of data voltages and supply the data voltages to the respective plurality of pixels for displaying an image.
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Abstract
A display device and a driving method thereof are provided. The display device includes a plurality of pixels that displays a first color, a second color, a third color, and a white color; a signal processor that generates a white color output image signal based on three input image signals displaying the first to third colors, generates a white color temperature correcting constant based on the white color output image signal, and generates first color, second color, and third color output image signals that correct the first color, second color, and third color input image signals based on the white color temperature correcting constant; and a data driver that converts the output image signal to a data voltage and supplies the data voltage to the pixel to allow the pixel to display an image. Therefore, a color temperature of white light that four color pixels emit can be adjusted to a target color temperature by adjusting an image signal value related to the remaining three color pixels according to luminance of white light that a white pixel emits.
17 Citations
19 Claims
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1. A display device comprising:
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a plurality of pixels, wherein each pixel comprises a first color pixel, a second color pixel, a third color pixel, and a white color pixel; a signal processor configured to generate a white color output image signal based on a first, a second, and a third color input image signal, generate a white color temperature correcting constant based on the white color output image signal, and generate first color, second color, and third color output image signals that correct the first, second, and third color input image signals based on the white color temperature correcting constant; and a data driver configured to convert the output image signals to a plurality of data voltages and supply the data voltages to the respective plurality of pixels for displaying an image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A driving method of a display device, comprising:
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receiving three input image signals that represent each of three primary colors; generating three luminance signals and a white output image signal based on the three input image signals; generating three white color temperature constants based on the white output image signal; generating three corrected luminance signals by calculating each luminance signal with the white color temperature correcting constant; and generating three output image signals by performing de-gamma conversion of the three corrected luminance signals. - View Dependent Claims (18, 19)
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Specification