A display device includes a display panel having a curved area and a substantially flat area, a guide unit including a curved area and a first area, and a casing unit. The first area of the display panel extends from a first end of the curved area of the display panel. The curved area of the guide unit supports the curved area of the display panel. The first area of the guide unit supports the first area of the display panel. The casing unit covers at least a portion of the curved area of the display panel.