A display device includes a display module including a folding area, a plate which is under the display module and includes a bending portion corresponding to the folding area and a plurality of openings defined in the bending portion, a first plate and a second plate portion extending from opposing sides of the bending portion, a support layer which is under the bending portion and includes a first support member and a second support member spaced apart from each other, and a cushion layer including a first cushion member corresponding to the first plate portion and a second cushion member corresponding to the second plate portion. Each of the first support member and the second support member has a modulus greater than a modulus of each of the first cushion member and the second cushion member.