A display apparatus including a display module that is deformable to be in a flat surface state or in a curved surface state. The display module includes a bottom chassis forming the display module, and the bottom chassis includes a rear panel forming a rear surface of the bottom chassis and one pair of side frames forming both side surfaces of the bottom chassis and allowing both side ends of the rear panel to be movably installed thereon, so that the rear panel is movable with respect to the side frames according to deformation of the display module, thereby enabling easy deformation of the display module.