A display device including a display panel, a polarization unit that includes a first polarization part overlapping the display panel on a plane and a second polarization part extending from the first polarization part and having an outer surface protruding outward from an outer surface of the display panel, and covers the display panel on a plane, an adhesive layer that includes a first adhesive part disposed between the first polarization part and the display panel and a second adhesive part overlapping the second polarization part and is directly disposed on a lower surface of the polarization unit, an adhesive protection member directly disposed on a lower surface of the second adhesive part, a light shielding pattern directly disposed on the polarization unit, and a coated window directly disposed on the polarization unit and the light shielding pattern and including a resin material cured by laser irradiation.