Patent ID: 7518574

Claim:
A plasma display apparatus comprising: a scan electrode and a sustain electrode formed on a first substrate; an address electrode formed on a second substrate; a plurality of barrier ribs provided between the first and second substrate; a cell being defined by the scan, sustain and address electrodes; a panel capacitor; and an energy recovery circuit that charges the panel capacitor during a charging period, maintains the panel capacitor at a maximum potential during a clamping period and recovers power from the panel capacitor during a recovery period through an inductor, during the charging period, energy is stored in the inductor until the magnitude of the inductor current reaches a maximum value and the energy recovery circuit supplies the panel capacitor with a clamping voltage, wherein the clamping voltage is supplied to the panel capacitor after the current of the inductor reaches a maximum value but before the current of the inductor reaches zero, during the clamping period, the panel capacitor reaches and maintains the maximum potential before the current of the inductor reaches zero.