A display device having an uneven electrode enhances display quality by improving the emission efficiency of the vertically polarized light. The method for fabricating a display device includes forming a thin film transistor on a base substrate, forming a first electrode connected to the thin film transistor, forming a block copolymer layer on the first electrode, patterning the block copolymer layer and forming a uneven first electrode having a plurality of electrode grooves by etching the first electrode exposed by the block copolymer pattern, and forming a light emitting layer on the uneven first electrode.