Patent ID: 6806655
Filing Date: 2004-10-19
Classification: G09G

Abstract:
An apparatus for driving a plasma display panel having a plurality of scan electrodes and common electrodes arranged in pairs, and a panel capacitor formed between each scan electrode and common electrode, the apparatus comprising:a sustain part including a first swich and a second switch that are each coupled in series between a first voltage and a second voltage, and a third switch and a fourth switch that are each coupled in series between the first voltage and the second voltage, a coupling node of the first switch and a coupling node of the second switch being each coupled to one end of the panel capacitor, a coupling node of the third switch and a coupling node of the fourth switch being each coupled to the other end of the panel capacitor, the sustain part maintaining a voltage of the one end of the panel capacitor and a voltage of the other end of the panel capacitor at the first voltage or the second voltage; and a charging/discharging part including an inductor with one inductor end coupled to the coupling node of the first switch and the coupling node of the second switch through a first path and to the coupling node of the third switch and the coupling node of the fourth switch through a second path, and an external capacitor coupled between the other end of the inductor and the second voltage through a third path and a fourth path, the charging/discharging part charging the voltage of one end of the panel capacitor and the voltage of the other end thereof with the first voltage or discharging the voltage of the one end of the panel capacitor and the voltage of the other end of the panel capacitor to the second voltage.