Patent ID: 6909225

Claim:
A gas discharge display device that reproduces a color of each pixel of a color image by controlling light emission quantities of three kinds of cells having different light emission colors, the device comprising: a discharge gas sealed in the three kinds of cells; a first fluorescent material in a first of the three kinds of cells emitting a red light; a second fluorescent material in a second of the three kinds of cells emitting a green light; a third fluorescent material in a third of the three kinds of cells emitting a blue light; a filter located at a front side of the three kinds of cells; and a first mixed color of the respective light emissions of the first fluorescent material, the second fluorescent material and the third fluorescent material, when reproducing a white color, being a color defined by first chromaticity coordinates in which a deviation from a blackbody locus is generated in a chromaticity diagram and a second mixed color of the first mixed color and a light emission color of the discharge gas, when reproducing a white color, being a color defined by second chromaticity coordinates in which a deviation from the blackbody locus is generated in the chromaticity diagram, wherein the filter converts the second mixed color into a color having a higher color temperature than the second mixed color, defined by third chromaticity coordinates that are closer to the blackbody locus than the second chromaticity coordinates of the second mixed color and in which a negative deviation from the blackbody locus is generated.