A patterned retarder type display device includes a display panel having a plurality of unit pixel lines disposed in column direction, each unit pixel line including N (N is a natural number) pixel lines, a patterned retarder film disposed on the outer surface of the display panel and including unit patterned retarders corresponding to each of the unit pixel lines, and a black strip disposed between two unit patterned retarders on the outer surface of the display panel. The display device may provide an excellent 3D viewing angle, and the brightness dropdown caused by the black strip can be reduced.