A plasma display device includes a chassis base supporting a plasma display panel. A printed circuit board having a plurality of scan integrated circuits is mounted on the chassis base. Lines of a first flexible printed circuit and of a second flexible printed circuit connect the scan electrodes to the scan integrated circuits. The lines of each of the first and second flexible printed circuits include a first outer line and a second outer line at respective sides of each of the first and second flexible printed circuits, at least one inner line between the first outer line and the second outer line, and at least one dummy line at an outer side of the first outer line. The second outer line of the first flexible printed circuit is connected to the dummy line of the second flexible printed circuit.