According to one embodiment, a flat panel display includes a first mounting portion including a first input pad and a first output pad, a second mounting portion including a second input pad and a second output pad, a first common terminal and a second common terminal, which have a common potential, and a guard ring wiring which is formed in a manner to extend from the first common terminal, to pass between the first input pad and the first output pad of the first mounting portion, to pass between the second input pad and the second output pad of the second mounting portion, and to reach the second common terminal, the guard ring wiring including a first resistor element of a first resistance value and a second resistor element of a second resistance value which is higher than the first resistance value.