Energy recovering apparatus and method for plasma display panel
AssigneeLG Electronics Inc.
InventorJoong Seo Park
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Abstract
An energy recovering apparatus and method for a plasma display panel wherein a charge time of the plasma display panel can be shortened with the aid of a compulsory resonance to thereby improve a discharge characteristic. In the apparatus, a first path charges an inductor using energy from a source capacitor. A second path is separated from the source capacitor to supply energy of the inductor to the plasma display panel.
Claims22
An energy recovering apparatus of a plasma display panel, comprising:
- a first path for charging an inductor using energy from a source capacitor;
- and
- a second path, being separated from the source capacitor, for supplying energy of the inductor to the plasma display panel, wherein the first path includes:
- a first switching device connected between a second terminal of the source capacitor connected to a ground voltage source and a first terminal of the inductor;
- and
- a second switching device connected between a second terminal of the inductor and the ground voltage source, wherein the first and second switching devices keep a turned-on state during a period when energy from the source capacitor is charged in the inductor through the first path, and shut off the first path in a state in which energy has been charged in the inductor to thereby derive an inverse voltage into the inductor.
An energy recovering method for a plasma display panel, comprising:
- (A) charging energy from a source capacitor into an inductor using a first path by enabling a first switch coupled between the source capacitor and the inductor and by enabling a second switch coupled between the inductor and a prescribed potential;
- and
- (B) applying energy of the inductor to the panel using a second path that is separated from the source capacitor by disabling the first switch coupled between the source capacitor and the inductor and by disabling the second switch coupled between the inductor and the prescribed potential.
An energy recovering apparatus for a plasma display panel having a panel capacitance, comprising:
- a first node for coupling to the panel capacitance;
- a second node for coupling to a prescribed potential;
- an inductor coupled to the first node and the second node;
- a first switching circuit coupled to the second node;
- a capacitor coupled to the first switching circuit and the prescribed potential;
- and
- a second switching circuit coupled to the first node and to the prescribed potential, wherein
- during a first prescribed period of time, the first and second switching circuits allow transfer of energy between the capacitor and the inductor through a first electrically conductive path, and
- during a second prescribed period of time, the first and second switching circuits allow transfer of energy stored in the inductor to the first node through a second electrically conductive path which excludes the capacitor.
Dependencies are inferred from the claim text.