A display device and a driving method of the display device are disclosed. The display device includes a display panel including a plurality of pixels, wherein each of the pixels is composed of three sub-pixels among a first color sub-pixel, a second color sub-pixel, a third color sub-pixel, and a fourth color sub-pixel, an image processing unit configured to change a color combination on a time axis in at least one of the pixels, and render sub-pixel data of an input image in the color combination, and a display panel driving circuit configured to write data received from the image processing unit to the pixels.