It is an object of the present invention to provide a display device that has a structure of an electrode where a residue of a transparent conductive film is not generated when a weak acid solution is used in etching, which is particularly appropriate for an electrode of a light-emitting element. The rear pillar reinforcement has a rear-side pillar-reinforcement ridge portion extending vertically. Fasteners, such as bolts, fasten together the overlapped joining sections in the front-and-rear direction, to thereby join together the left and right undercover members.