Patent ID: 7324100

Claim:
An energy recovery circuit for a plasma display panel having a plurality of address electrodes and pairs of scan electrodes and sustain electrodes intersecting the address electrodes and alternately disposed, and panel capacitors formed among the address electrodes, the scan electrodes and the sustain electrodes, the energy recovery circuit comprising: a first switching element coupled between a first power source supplying a first voltage and one end of a panel capacitor; a second switching element, one end of the second switching element being coupled to a contact of the first switching element and the panel capacitor; an inductor, one end of the inductor being coupled to one end of the panel capacitor; a first diode coupled between an other end of the inductor and the contact of the first switching element and the panel capacitor; a second diode coupled between a second power source supplying a second voltage and a contact of the second switching element and the inductor; and a third switching element coupled between the other end of the inductor and the second power source.