Patent ID: 7915832
Filing Date: 2011-03-29
Classification: G09G

Abstract:
1. A plasma display panel drive circuit for driving a plasma display panel having a plurality of scan electrodes and sustain electrodes, comprising: a pulse voltage generator that includes a main switching element disposed on a high voltage side and a main switching element disposed on a low voltage side, and is operable to generate a pulse voltage by operating the main switching elements in accordance with an output voltage from a first power supply, and apply the pulse voltage to the plurality of scan electrodes and/or sustain electrodes of the plasma display panel; and a reset voltage generator operable to generate a reset voltage in accordance with an output voltage from a second power supply that outputs a voltage higher than the output voltage of the first power supply, and apply the reset voltage to the plasma display panel, wherein the pulse voltage generator includes a first diode operable to prevent the voltage output by the reset voltage generator from being applied in a reverse direction to the first power supply and a first switching element connected to the first diode in parallel, the first switching element includes a body diode, the first diode has a larger maximum rated value than the body diode of the first switching element, the high voltage side main switching element includes a body diode, and the first switching element is connected to the high voltage side main switching element such that a forward bias direction of the body diode of the first switching element is opposite to a forward bias direction of the body diode of the high voltage side main switching element.