A display device includes a substrate including a peripheral area with an integrated circuit chip disposed therein. A first pad portion, overlaps the integrated circuit chip, and includes a plurality of first dummy terminals, and a plurality of first connecting terminals electrically connected to the integrated circuit chip. The plurality of first dummy terminals is not electrically connected to the integrated circuit chip. A second pad portion, disposed in the peripheral area, includes a plurality of second connecting terminals electrically connected to a printed circuit board. A plurality of first connecting wires electrically connect each of the plurality of first connecting terminals to one or more of the plurality of second connecting terminals. At least one of the plurality of first connecting terminals is disposed between the plurality of first dummy terminals. The plurality of first connecting wires is not electrically connected to the plurality of first dummy terminals.