Patent ID: 7598932

Claim:
A plasma display apparatus, comprising: a Plasma Display Panel (PDP); an energy storage part for recovering energy from the PDP; and an energy supply and recovery controller that forms a current path so that the energy storage part can be charged or discharged, wherein the energy supply and recovery controller comprises a bias circuit part for fixing a reference bias voltage between a gate terminal and a source terminal of a switching element to a negative voltage, wherein the bias circuit part comprises a first bias circuit that forms a positive bias voltage and a second bias circuit that forms a negative bias voltage, and wherein the first bias circuit comprises a first resistor and a first Zener diode which are connected in parallel between the gate terminal of the switching element and one end of the second bias circuit, and the second bias circuit comprises a second resistor and a second Zener diode, which are connected in parallel between the source terminal of the switching element and one end of the first bias circuit.