A display device includes a flexible display panel, a sealant, and a first reinforcing structure. The flexible display panel includes a lower substrate, an upper substrate, and a display medium layer disposed between the lower substrate and the upper substrate. Each of the lower substrate and the upper substrate has an edge region. A centerline of the flexible display panel is parallel to a short side of the flexible display panel. The sealant is disposed between the edge region of the lower substrate and the edge region of the upper substrate. The first reinforcing structure is disposed among the sealant, the edge region of the lower substrate, and the edge region of the upper substrate. The centerline of the flexible display panel passes through the first reinforcing structure, and the elastic modulus of the first reinforcing structure is greater than that of the sealant.