A display device includes a display panel including a folding region and a non-folding region which is adjacent to the folding region along a first direction, a first plate facing the display panel, a second plate facing the non-folding region of the display panel with the first plate therebetween, the second plate including a first sub-plate and a second sub-plate spaced apart from each other along the first direction, at the folding region, and each of the first sub-plate and the second sub-plate including an outer edge, and an adhesive layer protruded from the second plate, in a direction away from the first plate. The adhesive layer includes a first sub-adhesive layer extended along the outer edge of the first sub-plate, and a second sub-adhesive layer extended along the outer edge of the second sub-plate.