Multi-primary color display device
First Claim
1. A multi-primary color display device comprising:
- a multi-primary color display panel including a pixel that is defined by a plurality of sub pixels including a red sub pixel, a green sub pixel, a blue sub pixel, and a yellow sub pixel; and
a signal converting circuit converting a three-primary color image signal corresponding to three primary colors into a multi-primary color image signal corresponding to four or more primary colors,in a case where a three-primary color image signal representing at least an achromatic color of a half tone is input, the signal converting circuit performs a signal conversion such that variations in luminance levels of the plurality of sub pixels are equalized;
in a case where a three-primary color image signal representing an achromatic color of a 128/255 gray scale is input, the signal converting circuit performs a signal conversion such that a root mean square value of differences between an average luminance level of the plurality of sub pixels and luminance levels of the plurality of sub pixels is 0.023 or less; and
the signal converting circuit includes independent gamma processing circuitry that independently performs a gamma processing for each of the plurality of sub pixels.
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Accused Products
Abstract
A multi-primary color display device (100) includes: a multi-primary color display panel (10) including a pixel that is defined by a plurality of sub pixels including a red sub pixel (R), a green sub pixel (G), a blue sub pixel (B), and a yellow sub pixel (Ye); and a signal converting circuit (20) converting a three-primary color image signal corresponding to three primary colors into a multi-primary color image signal corresponding to four or more primary colors. The signal converting circuit (20), in a case where a three-primary color image signal representing at least an achromatic color of a half tone is input, performs a signal conversion such that variations in luminance levels of the plurality of sub pixels are equalized.
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Citations
12 Claims
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1. A multi-primary color display device comprising:
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a multi-primary color display panel including a pixel that is defined by a plurality of sub pixels including a red sub pixel, a green sub pixel, a blue sub pixel, and a yellow sub pixel; and a signal converting circuit converting a three-primary color image signal corresponding to three primary colors into a multi-primary color image signal corresponding to four or more primary colors, in a case where a three-primary color image signal representing at least an achromatic color of a half tone is input, the signal converting circuit performs a signal conversion such that variations in luminance levels of the plurality of sub pixels are equalized; in a case where a three-primary color image signal representing an achromatic color of a 128/255 gray scale is input, the signal converting circuit performs a signal conversion such that a root mean square value of differences between an average luminance level of the plurality of sub pixels and luminance levels of the plurality of sub pixels is 0.023 or less; and the signal converting circuit includes independent gamma processing circuitry that independently performs a gamma processing for each of the plurality of sub pixels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification