Driver circuit for plasma display panels
AssigneeChunghwa Picture Tubes, Ltd.
InventorBi-Hsien Chen
Life of this patent
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Abstract
A driver circuit for plasma display panels is provided. The driver circuit includes four switches and an energy recovery circuit coupled to an equivalent capacitor of a plasma display panel. The present energy recovery circuit includes a first unit, coupled to the X side of the equivalent capacitor, for passing current of charging and/or discharging the equivalent capacitor from the X side; a second unit, coupled to the Y side of the equivalent capacitor, for passing current of charging and/or discharging the equivalent capacitor from the Y side; and a third unit coupled to the first unit, the second unit and ground, the third unit comprising a capacitor, capable of charging and/or discharging the equivalent capacitor from the X side and/or the Y side.
Claims23
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 ground;
- a fourth switch having a first end coupled to the second end of the second switch and a second end coupled to ground;
- and
- an energy recovery circuit comprising:
- a first unit, coupled to the X side of the equivalent capacitor, for passing current of charging and/or discharging the equivalent capacitor from the X side;
- a second unit, coupled to the Y side of the equivalent capacitor, for passing current of charging and/or discharging the equivalent capacitor from the Y side;
- and
- a third unit coupled to the first unit, the second unit and ground, the third unit comprising a capacitor, capable of charging and/or discharging the equivalent capacitor from the X side and/or the Y side.
Dependencies are inferred from the claim text.