A display device includes a data IC including a plurality of dummy output pads, and a plurality of signal output pads that are positioned at both sides of the plurality of dummy output pads; a plurality of dummy data pads and a plurality of signal input data pads in a non-display region of an array substrate of a display panel, the plurality of dummy data pads corresponding to the plurality of dummy output pads, and the plurality of signal input data pads corresponding to the plurality of the signal output pads; and a plurality of data link lines in the non-display region, and connected between the plurality of signal input data pads and the plurality of data lines in a display region of the display panel.