Display device having white balance adjusting module and white balance adjusting method thereof

A white balance adjusting method of a display device, comprising:

• measuring a stimulus value of each of gray scales of each of pixels of a panel, wherein the pixels comprises a red pixel, a green pixel, and a blue pixel;
• finding out reversal gray scale values of the red pixel, the green pixel, and the blue pixel of each of coordinate systems in a standard chromaticity system;
• defining a highest voltage of each of the pixels at a maximum of the stimulus value;
• re-defining a white highest voltage using a first white balance pixel look-up table according to the highest voltage of each of the pixels;
• defining a target value for a white balance color pixel degree adjustment according to the white highest voltage and a corresponding white chromaticity;
• using a root-mean-square minimum error method to calculate to obtain red pixel, green pixel, and blue pixel look-up tables of each of the gray scales corresponding to an adjusted white to serve as an adjusted second white balance pixel look-up table to keep a white brightness gamma value to be equal to 2.2;
• and
• acquiring an adjusted second white balance pixel look-up table to complete a white balance adjustment of the display device.

A display device, comprising:

• a white balance adjusting module, wherein the white balance adjusting module comprises:
• a stimulus value measuring unit for measuring a stimulus value of each of gray scales of each of pixels of the panel;
• a white highest voltage defining unit for defining a highest voltage of each of the pixels at a maximum of the stimulus value and re-defining a white highest voltage using a first white balance pixel look-up table according to the highest voltage of each of the pixels;
• and
• a white balance adjusting unit for defining a target value for the white balance color pixel degree adjustment according to the white highest voltage and a corresponding white chromaticity, and acquiring an adjusted second white balance pixel look-up table to complete a white balance adjustment of the display device.