Patent ID: 7268757

Claim:
A color liquid crystal display (LCD) device for displaying a color image using at least four different primary colors, the device comprising: an array of liquid crystal (LC) elements; driving circuitry adapted to receive an input corresponding to said color image and to selectively activate the LC elements of said LC array to produce and attenuation pattern corresponding to gray-level representation of said color image; and a back illumination source to generate light; and an array of color sub-pixel filter elements to filter the light generated by said back illumination source, said array of color sub-pixel filter elements is juxtaposed and in registry with said an array of LC elements such that each color sub-pixel filter elements is in registry with one of said LC elements, wherein at least some pixels of said color image are reproduced using four or more of said at least four colors and wherein the color gamut of the LCD device is wider than the color gamut of a standard RGB display, wherein said at least four colors comprise at least five colors and wherein said at least four types of color sub-pixel filter elements comprise at least five types of color sub-pixel filter elements, which transmit light of said at least five colors respectively.