a display panel comprising at least one bending area bending with respect to a bending axis;

a frame supporting a rear surface of the display panel;

a plurality of guide parts fixed to a rear surface of the frame;

a plurality of fixing parts movably provided on the rear surface of the frame and selectively coupled to the plurality of guide parts; and

a controller connected to the fixing parts to control movements of the fixing parts, and the length of the controller is variable depending on a state of bending of the display panel,

wherein the bent display panel is prevented from being unbent when the plurality of fixing parts are coupled to the plurality of guide parts.