Liquid crystal display
First Claim
Patent Images
1. A liquid crystal display device comprising:
- a pixel including at least four sub-pixels;
whereinthe sub-pixels include at least one sub-pixel belonging to a first group and at least one sub-pixel belonging to a second group, the sub-pixel of the second group being different from that of the first group; and
luminances of the sub-pixels are set such that if the colors represented by the pixel change from black into white while being kept achromatic, the first group of sub-pixel starts to increase in luminance first, and the second group of sub-pixel starts to increase in luminance when the luminance of the first group of sub-pixel reaches a predetermined value.
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Abstract
A liquid crystal display device includes a pixel defined by at least four sub-pixels. The sub-pixels include at least one sub-pixel belonging to a first group and at least one sub-pixel belonging to a second group, the sub-pixel of the second group being different from that of the first group. The luminances of the sub-pixels are set such that if the colors represented by the pixel change from black into white while being kept achromatic, the first group of sub-pixel starts to increase in luminance first, and the second group of sub-pixel starts to increase in luminance when the luminance of the first group of sub-pixel reaches a predetermined value.
19 Citations
22 Claims
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1. A liquid crystal display device comprising:
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a pixel including at least four sub-pixels;
whereinthe sub-pixels include at least one sub-pixel belonging to a first group and at least one sub-pixel belonging to a second group, the sub-pixel of the second group being different from that of the first group; and luminances of the sub-pixels are set such that if the colors represented by the pixel change from black into white while being kept achromatic, the first group of sub-pixel starts to increase in luminance first, and the second group of sub-pixel starts to increase in luminance when the luminance of the first group of sub-pixel reaches a predetermined value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A liquid crystal display device comprising:
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a pixel that represents a color by using at least four primary colors in an arbitrary combination at an arbitrary luminance;
whereinthe primary colors include at least one primary color belonging to a first group and at least one primary color belonging to a second group, the primary color of the second group being different from that of the first group; and luminances of the primary colors are set such that if the colors represented by the pixel change from black into white while being kept achromatic, the first group of primary color starts to increase in luminance first, and the second group of primary color starts to increase in luminance when the luminance of the first group of primary color reaches a predetermined value.
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21. A liquid crystal display device comprising:
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a pixel including at least four sub-pixels;
whereinthe sub-pixels include at least one sub-pixel belonging to a first group and at least one sub-pixel belonging to a second group, the sub-pixel of the second group being different from that of the first group; the sub-pixels represent a color including a chromatic component and an achromatic component; and luminances of the sub-pixels, which are associated with the achromatic component, are set such that if the achromatic component change from a minimum value into a maximum value, the first group of sub-pixel starts to increase in luminance first, and the second group of sub-pixel starts to increase in luminance when the luminance of the first group of sub-pixel reaches a predetermined value.
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22. A signal converter for generating a multi-primary-color signal, representing the luminances of multiple primary colors, based on a video signal for use in a multi-primary-color display panel that conducts a display operation in at least four primary colors, including at least one primary color belonging to a first group and at least one primary color belonging to a second group, the primary color of the second group being different from that of the first group, the signal converter comprising:
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a color component separating section arranged to separate a color specified by the video signal into an achromatic component and a chromatic component; an achromatic component converting section arranged to convert the achromatic component of the video signal into color components of the multiple primary colors; a chromatic component converting section arranged to convert the chromatic component of the video signal into color components of the multiple primary colors; and a synthesizing section arranged to synthesize together the color components of the multiple primary colors that have been converted by the achromatic and chromatic component converting sections, thereby generating the multi-primary-color signal;
whereinif the achromatic component changes from a minimum value to a maximum value, the achromatic component converting section starts to increase the luminance of the first group of primary colors first, and starts to increase the luminance of the second group of primary colors when the luminance of the first group of primary colors reaches a predetermined value.
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Specification