According to one embodiment, a display device includes an insulating substrate including a first surface on which a plurality of pixels are disposed and a second surface on an opposite side to the first surface, a support substrate disposed on the second surface side of the insulating substrate and an adhesive layer located between the insulating substrate and the support substrate, and the display device includes a display area on which the plurality of pixels are arranged, and an end portion of the adhesive layer is located closer to the display area than an end portion of the insulating substrate.