Patent ID: 8134582
Filing Date: 2012-03-13
Classification: G02F

Abstract:
1. A color display apparatus of the type wherein a unit pixel is constituted by a plurality of subpixels including three first subpixels and three second subpixels, each of the first subpixels having a color filter of a color selected from three colors of yellow, magenta, and cyan, and each of the second subpixels having a color filter of a second color selected from three colors of red, green, and blue, so as to generate a display state of the pixel by an additive color mixture of the first subpixels and the second subpixels, and a medium for changing an optical property depending on a voltage applied thereto, said color display apparatus comprising: means for applying a voltage to each of the three first subpixels for changing the optical property of the medium within a brightness change range in which light passing through the medium is changed in brightness and a hue change range in which the light passing through the medium assumes chromatic color and a hue of the chromatic color is changed; and means for applying a voltage, to the three second subpixels, for changing the optical property of the medium within a brightness change range in which the light passing through the medium is changed in brightness, wherein the optical property of the medium in the first subpixels is changed without using gradation colors and the optical property of the medium in the second subpixels is changed continuously; wherein the first subpixel having the yellow color filter displays black, yellow, red and green, wherein the first subpixel having the magenta color filter displays black, magenta, red and blue, and wherein the first subpixel having the cyan color filter displays black, cyan, green and blue.