Display device includes: a first terminal part configured by arranging a plurality of connectors on a substrate; and a second terminal part configured by arranging a plurality of connectors on the substrate. The first terminal part includes a first support tool. The first support tool is provided with openings through which connection cables can be attached respectively to the connectors, and also provided with a first and a second mounting piece to be mounted on a mounting part. The second terminal part includes a second support tool. The second support tool is provided with openings through which connection cables can be attached respectively to the connectors, and also provided with a first mounting piece to be mounted on the mounting part on which the first mounting piece of the first support tool is mounted, and with a second mounting piece to be mounted on another mounting part.