Patent ID: 7382338

Claim:
A driver circuit comprising: a first switch having a first end coupled to a first voltage source and a second end coupled to an X side of an equivalent capacitor of a plasma display panel; a second switch having a first end coupled to a second voltage source and a second end coupled to a Y side of the equivalent capacitor of the plasma display panel; a third switch having a first end coupled to the second end of the first switch and a second end coupled to a third voltage source; a fourth switch having a first end coupled to the second end of the second switch and a second end coupled to a fourth voltage source; and an energy recovery circuit comprising: a first unit, coupled to the X side of the equivalent capacitor and coupled to ground, for passing current of charging and/or discharging the equivalent capacitor from the X side and/or Y side, the first unit comprising: a fifth switch for passing current toward the X side of the equivalent capacitor; a sixth switch for passing current from the X side of the equivalent capacitor; and an inductor; wherein the fifth switch, the sixth switch and the inductor are coupled in series; and a second unit, coupled to the Y side of the equivalent capacitor and coupled to the first unit, for passing current of charging and/or discharging the equivalent capacitor from the Y side.