A display device includes: a fold portion; and connection wires electrically connecting a terminal to a wire in a display region. In the fold portion, an inorganic-insulating-film first slit provided to an inorganic insulating film and a film-layer first slit provided to a film layer extend in a direction to intersect with an edge of a frame region. The display device includes: either an inorganic-insulating-film second slit intersecting with the inorganic-insulating-film first slit; or a film-layer second slit intersecting with the film-layer first slit. Either the inorganic-insulating-film second slit or the film-layer second slit is provided between pluralities of the connection wires adjacent to each other.