Patent ID: 7014319

Claim:
A projection type color display device comprising: a white light source; a light flux separating unit which separates a visible light flux emitted from the white light source into three primary colors of red, green and blue; image display elements corresponding to respective colors of light fluxes as split by said light flux separating unit, each said element including a matrix array of pixels and having unit which modulates optical intensity of the light flux depending on an amplitude of an image signal as input thereto; a photosynthetic unit for combining together the light fluxes of respective colors subjected to optical intensity modulation by said image display elements; and a projection lens for projecting image light thus combined by said photosynthetic unit in an enlarged form onto a screen, wherein during red image displaying, an image display element corresponding to red color is modulated by a red image signal while adding to a blue image signal a signal having an amplitude which is no greater than 3% of an amplitude of said red image signal to thereby modulate by the added signal an image display element corresponding to blue color.