A display device includes a display panel including a front substrate and a back substrate, a plurality of first brackets attached to a non-display area of a back surface of the back substrate using an adhesive, a frame disposed in the rear of the display panel, an optical layer disposed between the frame and the display panel, a light guide plate disposed between the frame and the optical layer, a light source disposed on the side of the light guide plate, a second bracket disposed on the plurality of first brackets, and a connection frame including a first portion inserted into a hole or a groove of each of the plurality of first brackets and a second portion connected to the second bracket.