A display device comprising: a display panel to display an image; an optical film over the display panel and comprising at least one phase retarder and a polarizer; a first adhesive layer between the display panel and the optical film and contacting a first surface (200S1) of the optical film; and a second adhesive layer on the optical film and contacting a second surface (200S2) of the optical film opposite the first surface (200S1), wherein the first adhesive layer and the second adhesive layer contact each other, and at least one of the first adhesive layer and the second adhesive layer comprises a respective protrusion region (PR, PR 310, PR 320) protruding toward the outside of the optical film and covering an end of the optical film, and wherein the at least one phase retarder comprises a 1/4 wavelength phase retarder and a pressure sensitive adhesive or an adhesive (241, 241', 242, 242') is between the 1/4 wavelength phase retarder and the polarizer; characterized in that the at least one phase retarder further comprises a 1/2 wavelength phase retarder sequentially with the 1/4 wavelength phase retarder and over the display panel, and a pressure sensitive adhesive or an adhesive (241, 243) is between the 1/4 wavelength phase retarder and the 1/2 wavelength phase retarder and between the 1/2 wavelength phase retarder and the polarizer, wherein the 1/4 wavelength phase retarder and the 1/2 wavelength phase retarder are coated-type phase retarders, wherein the 1/4 wavelength phase retarder includes a reactive liquid crystal, and wherein the reactive liquid crystal is a discotic liquid crystal or a nematic liquid crystal. a display panel to display an image; an optical film over the display panel and comprising at least one phase retarder and a polarizer; a first adhesive layer between the display panel and the optical film and contacting a first surface (200S1) of the optical film; and a second adhesive layer on the optical film and contacting a second surface (200S2) of the optical film opposite the first surface (200S1), wherein the first adhesive layer and the second adhesive layer contact each other, and at least one of the first adhesive layer and the second adhesive layer comprises a respective protrusion region (PR, PR 310, PR 320) protruding toward the outside of the optical film and covering an end of the optical film, and wherein the at least one phase retarder comprises a 1/4 wavelength phase retarder and a pressure sensitive adhesive or an adhesive (241, 241', 242, 242') is between the 1/4 wavelength phase retarder and the polarizer; characterized in that the at least one phase retarder further comprises a 1/2 wavelength phase retarder sequentially with the 1/4 wavelength phase retarder and over the display panel, and a pressure sensitive adhesive or an adhesive (241, 243) is between the 1/4 wavelength phase retarder and the 1/2 wavelength phase retarder and between the 1/2 wavelength phase retarder and the polarizer, wherein the 1/4 wavelength phase retarder and the 1/2 wavelength phase retarder are coated-type phase retarders, wherein the 1/4 wavelength phase retarder includes a reactive liquid crystal, and wherein the reactive liquid crystal is a discotic liquid crystal or a nematic liquid crystal.