A back cover is disclosed. The back cover includes a plurality of unit plates connected to the rear surface of a display panel, and a connection unit for interconnecting the unit plates, the connection unit being deformed in order to withstand tensile or compressive stress due to thermal expansion of the display panel. A display device is also disclosed. The display device includes a display panel, a back cover coupled to the rear surface of the display panel, and an adhesive unit for attaching the back cover to the rear surface of the display panel in order to stably support the display panel.