A display device includes a substrate including a bending area between a first region and a second region and configured to be bent at the bending area, a display portion above the substrate in the first region, a protective film below the substrate and including a protective film base and an adhesive layer, wherein the protective film base has an opening corresponding to the bending area or the protective film base corresponds to at least a portion of the first region, and wherein the adhesive layer is between the substrate and the protective film base and forms an integral body above the first region, the bending area, and the second region, and at least a portion of the adhesive layer that corresponds to the bending area has a hardness different from that of at least a portion of the adhesive layer corresponding to the first region.