A display device including a housing including sidewalls and mounting surfaces at upper ends of the sidewalls; a display panel housed in the housing; and a cover window on the display panel, wherein the cover window includes an upper surface that faces outwardly in a direction in which light is emitted, a lower surface opposite to the upper surface, the lower surface being narrower than the upper surface, and side surfaces that slope inwardly from ends of the upper surface to ends of the lower surface, the side surfaces being at least partially bent, and wherein the side surfaces of the cover window are mounted on the mounting surfaces of the housing.