A display device includes a display panel, a support frame including a plurality of straight portions located at two adjacent outer side surfaces of the display panel and having a substantially equal cross-section and a curved portion connecting the plurality of straight portions and having a curvature, a plurality of protrusion frames each extending from a straight portion of the plurality of straight portions of the support frame toward an inner portion of the display panel, and a mold portion overlapping the plurality of protrusion frames to be joined with the plurality of protrusion frames and being located along an inner surface of the curved portion of the support frame.