Driver circuit for plasma display panels
First Claim
1. A driver circuit comprising:
- a first switch having a first end coupled to a first voltage source;
a second switch having a first end coupled to an X side of an equivalent capacitor and a second end coupled to ground;
a third switch having a first end coupled to a Y side of the equivalent capacitor and a second end coupled to ground; and
an energy recovery circuit comprising;
a first unit, having a first end coupled to the X side of an equivalent capacitor and a second end coupled to a second end of the first switch, for passing current of charging and/or discharging the equivalent capacitor from the X side;
a second unit, having a first end coupled to the Y side of the equivalent capacitor and a second end coupled to the second end of the first switch, for passing current of charging and/or discharging the equivalent capacitor from the Y side; and
a third unit coupled to the second end of the first switch and ground, the third unit comprising;
a capacitor for charging and/or discharging the equivalent capacitor from the X side and/or the Y side; and
a fourth switch coupled to the capacitor in series.
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Accused Products
Abstract
A driver circuit for plasma display panels is provided. The claimed driver circuit includes three 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 an equivalent capacitor and to a first switch, 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 and to the first switch, for passing current of charging and/or discharging the equivalent capacitor from the Y side; and a third unit coupled to the first switch and ground. The third unit includes a capacitor for charging and/or discharging the equivalent capacitor from the X side and/or the Y side, and a fourth switch coupled to the capacitor in series.
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Citations
18 Claims
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1. A driver circuit comprising:
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a first switch having a first end coupled to a first voltage source; a second switch having a first end coupled to an X side of an equivalent capacitor and a second end coupled to ground; a third switch having a first end coupled to a Y side of the equivalent capacitor and a second end coupled to ground; and an energy recovery circuit comprising; a first unit, having a first end coupled to the X side of an equivalent capacitor and a second end coupled to a second end of the first switch, for passing current of charging and/or discharging the equivalent capacitor from the X side; a second unit, having a first end coupled to the Y side of the equivalent capacitor and a second end coupled to the second end of the first switch, for passing current of charging and/or discharging the equivalent capacitor from the Y side; and a third unit coupled to the second end of the first switch and ground, the third unit comprising; a capacitor for charging and/or discharging the equivalent capacitor from the X side and/or the Y side; and a fourth switch coupled to the capacitor in series. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A driver circuit comprising:
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a first switch having a first end coupled to a first voltage source; a second switch having a first end coupled to an X side of an equivalent capacitor and a second end coupled to a second voltage source; a third switch having a first end coupled to a Y side of the equivalent capacitor and a second end coupled to a third voltage source; and an energy recovery circuit comprising; a first unit, having a first end coupled to the X side of an equivalent capacitor and a second end coupled to a second end of the first switch, for passing current of charging and/or discharging the equivalent capacitor from the X side; a second unit, having a first end coupled to the Y side of the equivalent capacitor and a second end coupled to the second end of the first switch, for passing current of charging and/or discharging the equivalent capacitor from the Y side; and a third unit, for passing charging and/or discharging current of the equivalent capacitor from the X side and/or the Y side, coupled to the second end of the first switch and ground, the third unit comprising a fourth switch. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
the second unit comprises; a second inductor; and a sixth switch, for passing current toward the Y side of the equivalent capacitor, coupled to the second inductor in series; wherein the fourth switch of the third unit is for passing current from the X side and/or the Y side of the equivalent capacitor.
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12. The driver circuit of claim 11 wherein the inductances of the first inductor and the second inductor are different.
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13. The driver circuit of claim 11 wherein the inductances of the first inductor and the second inductor are the same.
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14. The driver circuit of claim 10 wherein the first unit comprises:
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a first inductor; and a fifth switch, for passing current from and toward the X side of the equivalent capacitor, coupled to the first inductor in series; and the second unit comprises; a second inductor; and a sixth switch, for passing current from and toward the Y side of the equivalent capacitor, coupled to the second inductor in series; wherein the fourth switch of the third unit is for passing current from and toward the X side and/or the Y side of the equivalent capacitor.
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15. The driver circuit of claim 14 wherein the inductances of the first inductor and the second inductor are different.
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16. The driver circuit of claim 14 wherein the inductances of the first inductor and the second inductor are the same.
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17. The driver circuit of claim 10 wherein the first unit comprises a fifth switch for passing current toward the X side of the equivalent capacitor;
- the second unit comprises a sixth switch for passing current toward the Y side of the equivalent capacitor; and
the third unit further comprises an inductor coupled to the fourth switch and the capacitor in series;
in which the fourth switch of the third unit is for passing current from the X side and/or the Y side of the equivalent capacitor.
- the second unit comprises a sixth switch for passing current toward the Y side of the equivalent capacitor; and
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18. The driver circuit of claim 10 wherein the first unit comprises a fifth switch for passing current from and toward the X side of the equivalent capacitor;
- the second unit comprises a sixth switch for passing current from and toward the Y side of the equivalent capacitor; and
the third unit further comprises an inductor coupled to the fourth switch and the capacitor in series;
in which the fourth switch of the third unit is for passing current from and toward the X side and/or the Y side of the equivalent capacitor.
- the second unit comprises a sixth switch for passing current from and toward the Y side of the equivalent capacitor; and
Specification