Display device and data compensating method thereof

A data compensating method of a display device, the method comprising:

• determining a color temperature at each position of a light guide plate using a thermal conductivity of the light guide plate that transmits light from a light source to a liquid crystal display panel and a color temperature at a reference position of the light guide plate;
• determining a color temperature compensation value at one or more positions of the light guide plate using a difference in color temperature between the reference position and each of the one or more positions;
• and
• correcting at least one of an R gain value or a B gain value of image data displayed in at least one of the plurality of pixels based at least in part on the color temperature compensation value;
• wherein the at least one of the R gain value or the B gain value is differently corrected according to a distance of each of the one or more positions of light guide plate spaced apart from the light source.

A display device, comprising:

• a liquid crystal display panel that includes a plurality of pixels;
• a light guide plate that includes a plurality of positions and that transmits light from a light source to the liquid crystal display panel, the light guide plate having a thermal conductivity and a reference position;
• a color temperature compensation unit configured to determine a color temperature at one or more positions of the light guide plate using the thermal conductivity of the light guide plate and a color temperature at the reference position of the light guide plate, and determine a color temperature compensation value at each of the one or more positions of the light guide plate based at least in part on the color temperature;
• and
• a timing controller configured to correct at least one of an R gain value and a B gain value of image data displayed in at least one of the plurality of pixels based at least in part on the color temperature compensation value;
• and
• wherein the color temperature compensation unit determines the color temperature compensation value to increase the R gain value and the B gain value in an area of the light guide plate where the color temperature is higher than the reference position, and the color temperature compensation unit calculates the color temperature compensation value to decrease the R gain value in an area of the light guide plate where the color temperature is lower than the reference position.