MULTIPLE PRIMARY COLOR LIQUID CRYSTAL DISPLAY DEVICE AND SIGNAL CONVERSION CIRCUIT
First Claim
1. A multiprimary liquid crystal display device comprising a pixel defined by a plurality of subpixels, the multiprimary liquid crystal display device performing multicolor display by using four or more primary colors to be displayed by the plurality of subpixels, wherein,the plurality of subpixels include first and second red subpixels for displaying red, a green subpixel for displaying green, a blue subpixel for displaying blue, and a cyan subpixel for displaying cyan;
- andwhen a color having a hue within a predetermined first range is displayed by the pixel, a gray scale level of the first red subpixel and a gray scale level of the second red subpixel differ from each other, andwhen a color having a hue within a second range which is different from the first range is displayed by the pixel, the gray scale level of the first red subpixel and the gray scale level of the second red subpixel are equal.
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Abstract
The viewing angle characteristics of a multiprimary liquid crystal display device in which a plurality of red subpixels are provided in each pixel are improved.
A multiprimary liquid crystal display device according to the present invention includes a pixel defined by a plurality of subpixels, and performs multicolor display by using four or more primary colors to be displayed by the plurality of subpixels. The plurality of subpixels of the multiprimary liquid crystal display device according to the present invention include first and second red subpixels R1 and R2 for displaying red, a green subpixel G for displaying green, a blue subpixel B for displaying blue, and a cyan subpixel C for displaying cyan. When a color having a hue which is within a predetermined first range is displayed by the pixel, the gray scale level of the first red subpixel R1 and the gray scale level of the second red subpixel R2 differ from each other. When a color having a hue which is within a second range different from the first range is displayed by the pixel, the gray scale level of the first red subpixel R1 and the gray scale level of the second red subpixel R2 are equal.
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Citations
21 Claims
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1. A multiprimary liquid crystal display device comprising a pixel defined by a plurality of subpixels, the multiprimary liquid crystal display device performing multicolor display by using four or more primary colors to be displayed by the plurality of subpixels, wherein,
the plurality of subpixels include first and second red subpixels for displaying red, a green subpixel for displaying green, a blue subpixel for displaying blue, and a cyan subpixel for displaying cyan; - and
when a color having a hue within a predetermined first range is displayed by the pixel, a gray scale level of the first red subpixel and a gray scale level of the second red subpixel differ from each other, and when a color having a hue within a second range which is different from the first range is displayed by the pixel, the gray scale level of the first red subpixel and the gray scale level of the second red subpixel are equal. - View Dependent Claims (2, 4, 5, 6, 7, 8)
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3. A multiprimary liquid crystal display device comprising a pixel defined by a plurality of subpixels, the multiprimary liquid crystal display device performing multicolor display by using four or more primary colors to be displayed by the plurality of subpixels, wherein,
the plurality of subpixels include first and second red subpixels for displaying red, a green subpixel for displaying green, a blue subpixel for displaying blue, and a yellow subpixel for displaying yellow; - and
when a color having a hue within a predetermined first range is displayed by the pixel, a gray scale level of the first red subpixel and a gray scale level of the second red subpixel differ from each other, and when a color having a hue within a second range which is different from the first range is displayed by the pixel, the gray scale level of the first red subpixel and the gray scale level of the second red subpixel are equal. - View Dependent Claims (14, 15, 16, 17, 18)
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9. A signal conversion circuit for use in a multiprimary liquid crystal display device having a pixel defined by a plurality of subpixels including first and second red subpixels for displaying red, a green subpixel for displaying green, a blue subpixel for displaying blue, and a cyan subpixel for displaying cyan, the multiprimary liquid crystal display device performing multicolor display by using four or more primary colors to be displayed by the plurality of subpixels, the signal conversion circuit comprising:
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a multiprimary signal generation circuit for receiving an input video signal corresponding to three primaries and generating a multiprimary signal corresponding to four or more primary colors; and a red subpixel independent driving circuit for, depending on a hue of a color represented by the input video signal, determining the gray scale level of the first red subpixel and the gray scale level of the second red subpixel from a red component contained in the multiprimary signal. - View Dependent Claims (11, 12, 13)
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10. A signal conversion circuit for use in a multiprimary liquid crystal display device having a pixel defined by a plurality of subpixels including first and second red subpixels for displaying red, a green subpixel for displaying green, a blue subpixel for displaying blue, and a yellow subpixel for displaying yellow, the multiprimary liquid crystal display device performing multicolor display by using four or more primary colors to be displayed by the plurality of subpixels, the signal conversion circuit comprising:
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a multiprimary signal generation circuit for receiving an input video signal corresponding to three primaries and generating a multiprimary signal corresponding to four or more primary colors; and a red subpixel independent driving circuit for, depending on a hue of a color represented by the input video signal, determining the gray scale level of the first red subpixel and the gray scale level of the second red subpixel from a red component contained in the multiprimary signal. - View Dependent Claims (19, 20, 21)
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Specification