Patent ID: 7477212
Filing Date: 2009-01-13
Classification: G09G

Abstract:
1. An apparatus for driving a plasma display panel (PDP), the PDP including a plurality of X electrodes and a plurality of Y electrodes arranged parallel to each other and a plurality of Address electrodes arranged to cross with the plurality of X electrodes and the plurality of Y electrodes to define discharge cells, comprising: a sustain pulse applying unit including a first voltage applying unit to output a first voltage to one X electrode of the plurality of X electrodes and a ground voltage applying unit to output a ground voltage to the X electrode; a second voltage applying unit to output a second voltage to the X electrode; a frequency lowering unit coupled between the X electrode and a ground terminal, the frequency lowering unit to lower a resonance frequency caused by parasitic capacitance and inductance components of the sustain pulse applying unit and the second voltage applying unit; and an energy recovery unit coupled with the X electrode, the energy recovery unit to transfer charges to the PDP or to store charges from the PDP, wherein the frequency lowering unit also lowers a resonance frequency caused by parasitic capacitance and inductance components of the energy recovery unit, wherein the energy recovery unit comprises: wherein the energy recovery switching unit comprises: a first switching device having a first terminal coupled with the energy storage unit, and a second terminal coupled with the inductor; and a second switching device having a first terminal coupled with the energy storage unit, and a second terminal coupled with the inductor, whereby the first switching device is turned on to store the charges from the PDP in the energy storage unit, and the second switching device is turned on to transfer the charges stored in the energy storage unit to the PDP.