The utility model discloses a display device comprising a display screen and a back shell made of a non-metal material, wherein the back shell comprises assembly edges with a plurality of through holes and fasteners corresponding to the through holes; each fastener passes through the corresponding through hole and the back shell is assembled on a metal back plate of the display screen; in each through hole, a slide clearance is present between the side wall of the through hole and the outer wall of the fastener in the through hole along the extending direction of a connection line between the center of the through hole projection in the plane of the inner side surface of the assembly edges and the center of the back shell projection in the plane of the inner side surface of the assembly edges. When the display device is wholly heated or cooled, the assembly edge of the back shell expands or contracts along the direction of the internal stress through slide clearance, furthermore the internal stress of the back shell is released, and the expansion deformation of the back shell under internal stress or the deformation of the assembly edge is furthermore reduced, and the damage on the back shell due to internal stress is reduced.