A display device includes a display panel including gate lines and data lines, the gate lines and the data lines intersecting, and pixels defined at the intersections of the gate lines and data lines, a gate driver to sequentially output a gate driving signal to the gate lines, a data driver to sequentially output a data signal to channels, a switching controller to electrically connect one of the channels with two or more of the data lines, the switching controller including a switch for each of the channels, wherein the two or more data lines are adjacent, one is directly connected to the channel and the other is connected to the channel through the switch, and a timing controller to provide a selection signal to the switch which controls the connection between the other of the two or more data lines and the channel.