A display panel includes a plurality of unit pixels, where each of the unit pixels has a hexagonal-shape and includes: a first sub-pixel configured to emit a first color light, where the first sub-pixel has a rhombus-shape; a second sub-pixel configured to emit a second color light, where the second sub-pixel has the rhombus-shape; and a third sub-pixel configured to emit a third color light, where the third sub-pixel has the rhombus-shape, where first sub-pixels, second sub-pixels or third sub-pixels of neighboring unit pixels in a same row are arranged to adjoin each other.