A plasma display. The plasma display comprises a first circuit board and a second circuit board disposed in a space formed by a base plate and a back cover thereof. The first circuit board is mounted on the base plate and bears a first electronic element, the second circuit board is mounted on the first circuit board and bears a second electronic element requiring heat dissipation different from the first electronic element. A thermal conductive device is disposed between the second electronic element and the back cover to dissipate heat from the second electronic element to the back cover. Thereby, the electronic elements requiring different heat dissipation are positioned in divided areas to enhance heat dissipation efficiency.