A display device includes a display panel, a housing, a second electrode, and a driver. The display panel includes a substrate and a plurality of first electrodes arrayed in a display region of the substrate. The housing has at least a pair of walls facing each other in planar view and is provided with the display panel between the pair of walls. The second electrode is provided to the housing and positioned on the outer side than the display region in planar view and forms capacitance between the second electrode and the first electrodes. The driver supplies a drive signal to the second electrode.