A plasma display device prevents interconnect wiring from breaking due to thermal deformation, and is thus suitable for high definition. The plasma display device includes a chassis base, a plasma display panel disposed in front of the chassis base to display an image, a circuit board disposed in back of the chassis base for driving the plasma display panel, and interconnect wiring connecting the circuit board to the plasma display panel. The plasma display device has a structure in which a ratio of a distance between an end of the circuit board and a curve apex of the interconnect wiring to a distance between a front end and a back end of the interconnect wiring is at least 0.25. As a result, the interconnect wiring is prevented from breaking due to thermal expansion of the plasma display panel and the chassis base.