Patent ID: 7522172

Claim:
A display device comprising: an RGB-RGBX conversion circuit that converts RGB signals fed thereto into RGBX signals, where X represents a predetermined color other than R, G, and B; a display panel that displays an image based on the RGBX signals obtained from the RGB-RGBX conversion circuit, the display panel being composed of a plurality of dots each composed of four unit pixels that are an R pixel, a G pixel, a B pixel, and an X pixel; a defect position specifier that specifies, if a unit pixel is found defective, a position of the defective pixel on the display panel; the RGB-RGBX conversion circuit having a conversion rate controller that controls a conversion rate at which, when the RGB signals are converted into the RGBX signals, the RGB signals are converted into an X signal according to the position specified by the defect position specifier; the conversion rate controller makes the conversion rate for at least one unit pixel adjacent to the defective pixel different from a standard conversion rate set for the entire display panel.