1. A display device comprising: a plurality of pixel patterns configured to display an image, wherein each of the plurality of pixel patterns is repetitively arranged in row and column directions, wherein each pixel pattern includes: a plurality of primary pixels, wherein each primary pixel is composed of two primary color sub-pixels configured to provide two primary colors of three primary colors, wherein the three primary colors comprise red, green and blue; a plurality of first complex pixels, wherein each first complex pixel is composed of one primary color sub-pixel configured to provide a remaining primary color of the three primary colors and a first non-primary color sub-pixel configured to provide a first color selected from non-primary colors, wherein the non-primary colors are different from the three primary colors; and a plurality of second complex pixels, wherein each complex pixel is composed of one primary color sub-pixel configured to provide the remaining primary color and a second non-primary color sub-pixel configured to provide a second color selected from the non-primary colors.