A display device includes a display panel, a first support member, a second support member, a first heat dissipation member, and a first coating film. The display panel has a foldable area. The first support member is disposed on a lower surface of the display panel and includes a stretchable portion overlapping the foldable area. The second support member is disposed on a lower surface of the first support member and includes a first support plate and a second support plate spaced apart from each other. The first heat dissipation member is disposed between the first support member and the second support member and includes a first heat dissipation layer and a second heat dissipation layer spaced apart from each other. The first coating film is disposed between the first support member and the first heat dissipation member and includes carbon nanotube.