A display device includes a display panel including a first area including a pixel and at which the display panel is foldable, a second area on which a driver connected to the pixel is disposed, and a bending area between the first area and the second area and at which the display panel is bendable, a functional layer on the first area, and a protective layer on the bending area, a groove is defined in one surface of the protective layer, which does not face the display panel, and the groove is adjacent to the first area.