There is provided a display device including a jig that is provided with an insertion port into which a tip portion of an eccentric driver having the tip portion on an axis different from a central axis of a grip is inserted, a substrate that is provided with a long hole into which the grip is inserted, the long hole being long and narrow, a position of the substrate relative to the jig being movable within a predetermined movable range by rotation of the eccentric driver, the tip portion and the grip of the eccentric driver being inserted, and a base position fixing unit that fixes the substrate to a predetermined base position within the movable range.