A display device includes a display module including a first non-folding area, a second non-folding area, and a folding area disposed between the first and second non-folding areas, a first support plate disposed beneath the display module and including openings to overlap the folding area in a plan view, a second support plate disposed beneath the first support plate and including first and second sub-support plates respectively overlapping the first and second non-folding areas in a plan view, and a digitizer module disposed between the first support plate and the second support plate.