PLASMA DISPLAY PANEL HAVING LESS IMPEDANCE IN THE SINK DISCHARGE CURRENT PATH
A driving circuit for plasma display panel includes a panel capacitor having a first end and a second end, a first switch having a first end connected to a first end of the panel capacitor and a second end coupled to a positive voltage source, a second switch having a first end connected to the first end of the panel capacitor and a second end coupled to a negative voltage source, a third switch having a first end connected to the second end of the first switch and a second end, and a fourth switch having a first end connected to the second end of the second switch and a second end connected to the second end of the third switch. The PDP driving circuit has less impedance in the sink discharge current path.
1 . A plasma display panel comprising:
a panel capacitor having a first end and a second end;
a first switch having a first end coupled to a first end of the panel capacitor and a second end coupled to a voltage source;
a second switch having a first end coupled to the first end of the panel capacitor and a second end coupled to a negative voltage source;
a third switch having a first end coupled to the second end of the first switch and a second end; and
a fourth switch having a first end coupled to the second end of the second switch and a second end coupled to the second end of the third switch.
2 . The plasma display panel of claim 1 further comprising a diode having a first end coupled to the voltage source and a second end coupled to the second end of the second switch.
3 . The plasma display panel of claim 1 further comprising a fifth switch having a first end coupled to the second end of the second switch and a second end coupled to a negative voltage source.
4 . The plasma display panel of claim 3 further comprising:
a sixth switch having a first end coupled to a positive voltage source and a second end coupled to the second end of the third switch; and
a seventh switch having a first end coupled to ground and a second end coupled to the second end of the sixth switch.
5 . The plasma display panel of claim 4 further comprising:
an eighth switch coupled between the second end of the sixth switch and the second end of the fourth switch;
a ninth switch having a first end coupled to a positive voltage source and a second end coupled between the second end of the fourth switch and the second end of the eighth switch.
6 . The plasma display panel of claim 4 further comprising:
an eighth switch having a first end coupled to a positive voltage source and a second end coupled to the second end of the sixth switch.
7 . The plasma display panel of claim 1 wherein each of the first, second, third and fourth switch is a metal oxide semiconductor field effect transistor (MOSFET) with a body diode or an insulated gate bipolar transistor (IGBT) with a body diode.
8 . The plasma display panel of claim 1 wherein the third switch is a diode.
9 . The plasma display panel of claim 3 , 4 and 5 wherein each of the switches is a MOSFET with a body diode or an IGBT with a body diode.
10 . A plasma display panel comprising:
a panel capacitor having a first end and a second end;
a first switch having a first end coupled to a first end of the panel capacitor and a second end coupled to a positive voltage source;
a second switch having a first end coupled to the first end of the panel capacitor and a second end; and
a third switch having a first end coupled to the second end of the first switch and a second end coupled to the second end of the second switch.
11 . The plasma display panel of claim 10 further comprising a diode having a first end coupled to a positive voltage source and a second end coupled to the second end of the second switch.
12 . The plasma display panel of claim 11 further comprising:
a fourth switch having a first end coupled to a positive voltage source and a second end coupled to the second end of the third switch;
a fifth switch having a first end coupled to ground and a second end coupled to the second end of the fourth switch; and
a sixth switch having a first end coupled to a positive voltage source and a second end coupled to the second end of the fourth switch.
13 . The plasma display panel of claim 11 further comprising:
a fourth switch having a first end coupled to a positive voltage source and a second end coupled to the second end of the third switch;
a fifth switch having a first end coupled to the second end of the fourth switch and a second end;
a sixth switch having a first end coupled to a positive voltage source and a second end coupled to the second end of the fifth switch; and
a seventh switch having a first end coupled to ground and a second end coupled to the second end of the fifth switch.
14 . The plasma display panel of claim 11 further comprising:
a fourth switch having a first end coupled to the second end of the third switch and a second end coupled to the second end of the second switch;
a fifth switch having a first end coupled to a positive voltage source and a second end coupled between the second ends of the second switch and fourth switch;
a sixth switch having a first end coupled to a positive voltage source and a second end coupled to the first end of the fourth switch; and
a seventh switch having a first end coupled to ground and a second end coupled to the first end of the fourth switch.
15 . The plasma display panel of claim 10 wherein each of the first, second and third switch is a MOSFET with a body diode or an IGBT with a body diode.
16 . The plasma display panel of claim 10 wherein the third switch is a diode.
17 . The plasma display panel of claim 13 and 14 wherein each of the switches is a MOSFET with a body diode or an IGBT with a body diode.