A display device including: a display panel including first and second display areas; and a panel driver, second reference units in the second display area, each of the second reference units includes n first color light emitting elements and m second color light emitting elements, m is greater than n, the panel driver includes: an image analyzing part determining whether an image displayed in the second display area includes a pattern; and a data processing part rendering n first color image data corresponding to the n first color light emitting elements to generate first color compensation data and rendering m second color image data corresponding to the m second color light emitting elements in first or second rendering operations selected according to whether the image displayed in the second display area includes the first pattern to generate second color compensation data.