Patent ID: 7430022

Claim:
A color display device for displaying a color image, comprising: a display panel provided with a plurality of picture elements, at least two selectable light sources having different predetermined radiance spectra, each of said spectra having a plurality of peaks at different desired wavelengths, a color selection means which in combination with the selectable light sources is able to produce primary colors on the display panel, control means arranged to select alternately one of the selectable lightsources during a first and second period respectively and to provide a portion of the picture elements with image information corresponding to the primary color obtainable with the selected light source, wherein the color selection means comprises a filter arrangement comprising a number of lines, each line comprising consecutive triplets of a blue-cyan filter, a white filter and a green-red filter, wherein the blue-cyan filter has a pass band for the blue-cyan portion of the spectrum of the radiation, the white filter has a pass band for the visible portion of the spectrum of the radiation and the green-red filter has a pass band for the green-red portion of the spectrum of the radiation.