A display device includes a display module configured to display an image, and a flexible board in which a flat area and a bending area arranged in one direction in a plan view are defined, wherein at least a portion of the flat area is connected to the display module, and wherein the flexible board includes a base substrate connected to the display module, a cover member on the flat area, and covering a boundary at which the base substrate and the display module are connected to each other, and a blocking member on the flat area, and in contact with the cover member.