According to an aspect, a display device includes a display unit, a parallax adjuster that includes a plurality of unit areas, a controller that detects positions of a right eye and a left eye of a user, determines a pixel display of pixels of a right eye image and a left eye image, and sets a light transmission state to the unit areas in accordance with the positions of the right eye and the left eye and the pixel display; a plurality of conductors that are provided corresponding to the respective unit areas and each of which applies a signal to set the light transmission state of the unit area to the corresponding unit area; and a coupling unit that electrically couples the conductors together, the coupling unit providing a certain resistance value between the conductors.