A display apparatus includes a display panel and a display driver. The display panel has a first pixel structure. The display driver is configured to receive input image data including first data, and generate a driving signal for driving the display panel based on conversion data. The display driver includes a converter configured to convert the first data into the conversion data. The conversion data include conversion data in N rows and M columns. Each of (2K−1)-th column conversion data include first color conversion data representing a first color and second color conversion data representing a second color. Each of 2K-th column conversion data include third color conversion data representing a third color and fourth color conversion data representing the second color. N, M and K are positive integers.