Patent ID: 7893946

Claim:
A color temperature calibration method for calibrating the color temperature of a display device according to a set of target chromaticity coordinate values, the color temperature calibration method comprising: utilizing a colorimeter for measuring colors displayed by a plurality of display cells of the display device to generate at least a set of measurement chromaticity coordinate values; and adjusting at least a first gain value of the display device according to the set of target chromaticity coordinate values, the set of measurement chromaticity coordinate values, a color angle of the set of measurement chromaticity coordinate values, and a second gain value and a third gain value of the display device; wherein the first gain value corresponds to the color of a first color channel of the display device, and the second gain value and the third gain value respectively correspond to a second color channel and a third color channel of the display device; and the first color channel is one of the red color channel, green color channel and blue color channel; wherein the first gain value of the display device is adjusted by calculating a difference between the color angle of the set of measurement chromaticity coordinate values and a color angle of the set of target chromaticity coordinate values.