Patent ID: 8279234

Claim:
A gamma data generation method of a display device, comprising: determining gamma data comprising red gamma data, green gamma data, and blue gamma data; determining a target luminance and a target color coordinate of a first reference gray; displaying an image on a display device based on a red input image signal, a green input image signal, and a blue input image signal for a first reference gray; measuring a first luminance and a first color coordinate from the image; determining whether a coordinate difference between the first color coordinate and the target color coordinate and a luminance difference between the first luminance and the target luminance are in an allowable error range or not; converting the first luminance and the first color coordinate to a first coordinate of a CIE XYZ coordinate system, and converting the target luminance and the target color coordinate to a target coordinate of the CIE XYZ coordinate system if the coordinate difference and the luminance difference are not in the allowable error range; and determining to change a red luminance, a green luminance, or a blue luminance of the image according to a comparison of the first coordinate of the CIE XYZ coordinate system with the target coordinate of the CIE XYZ coordinate system.