PDP DRIVING APPARATUS AND PLASMA DISPLAY

• US 20090237000A1
• Filed: 11/10/2006
• Published: 09/24/2009
• Est. Priority Date: 11/22/2005
• Status: Abandoned Application

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Inoue, Manabu
• Application Number:
  US12/094,332
• Publication Number:
  US 20090237000A1
• Time in Patent Office: Days
• US Class Current: 315/291
• CPC Class Codes: G09G 2330/028 Generation of voltages supplied to electrode drivers in a matrix display other than LCD
• CPC Class Codes: G09G 3/2927 Details of initialising
• CPC Class Codes: G09G 3/293 for address discharge
• CPC Class Codes: G09G 3/294 for lighting or sustain discharge
• CPC Class Codes: G09G 3/296 Driving circuits for producing the waveforms applied to the driving electrodes
• CPC Class Codes: G09G 3/2965 using inductors for energy recovery

Abstract

A PDP driving apparatus drives a plasma display panel (PDP) having sustain electrodes, scan electrodes, and address electrodes. The PDP driving apparatus includes a high side switch element and a low side switch element, those electrically coupled in series. A specific pulse voltage is applied from a junction point of the high side switch element and the low side switch element to at least sustain electrodes, scan electrodes, or address electrodes of the plasma display panel. At least one of the high side switch element and the low side switch element is a bidirectional switch element.

Claims

1. A PDP driving apparatus for driving a plasma display panel having sustain electrodes, scan electrodes, and address electrodes, comprising a plurality of switch elements, wherein

at least one of the plurality of switch elements is a bidirectional switch element, and the bidirectional switch element is a device capable of allowing a current to flow through the bidirectional switch element in at least one direction when the bidirectional switch element is on, and preventing a current from flowing through the bidirectional switch element in both directions when the bidirectional switch element is off.

2. The PDP driving apparatus according to claim 1, wherein

the plurality of switch elements include a high side switch element, and a low side switch element, those electrically coupled in series,

a specific pulse voltage is applied from a junction point of the high side switch element and the low side switch element to at least one of scan electrodes, sustain electrodes, and address electrodes of the plasma display panel, and

at least one of the high side switch element and the low side switch element is a bidirectional switch element.

3. The PDP driving apparatus according to claim 2, further comprising

an inductor connected to the junction point, and

a recovery switch element operable to form, when the recovery switch element is in ON period, a path in which a resonance current due to the inductor and the plasma display panel flows,

wherein the recovery switch element is a bidirectional switch element.

4. The PDP driving apparatus according to claim 1, wherein the bidirectional switch element includes at least one of JFET, MESFET, reverse blocking IGBT, and bidirectional lateral MOSFET.

5. The PDP driving apparatus according to claim 1, wherein the bidirectional switch element is formed of wide band gap semiconductor which has wider band gap than silicon.

6. The PDP driving apparatus according to claim 5, wherein the wide band gap semiconductor contains at least one of silicon carbide, diamond, gallium nitride, molybdenum oxide and zinc oxide.

7. The PDP driving apparatus according to claim 1, further comprising a recovery circuit which is connected to the bidirectional switch element in parallel and includes a series circuit of a diode and a switch element.

8. The PDP driving apparatus according to claim 2, further comprising

an inductor connected to the junction point,

a recovery switch element operable to form, when the recovery switch element is in ON period, a path in which a resonance current due to the inductor and the plasma display panel flows, and

a clamp circuit operable to clamp a potential between the inductor and the recovery switch.

9. The PDP driving apparatus according to claim 8, further comprising a recovery circuit which is connected to the bidirectional switch element in parallel and includes a series circuit of a diode and a switch element,

wherein the clamp circuit includes a diode and the switch element included in the recovery circuit.

10. The PDP driving apparatus according to claim 1, wherein

the plurality of switch elements include a high side switch element, and a low side switch element, those electrically coupled in series,

a specific pulse voltage is applied from a junction point of the high side switch element and the low side switch element to at least one of scan electrodes, sustain electrodes, and address electrodes of the plasma display panel,

a separation switch element is provided between the junction point and the plasma display panel, and

the separation switch element is a bidirectional switch element.

11. The PDP driving apparatus according to claim 10, further comprising:

an inductor connected to the junction point; and

a recovery switch element operable to form, when the recovery switch element is in ON period, a path in which a resonance current due to the inductor and the plasma display panel flows,

wherein the recovery switch element is a bidirectional switch element.

12. The PDP driving apparatus according to claim 10, wherein the bidirectional switch element includes at least one of JFET, MSFET, reverse blocking IGBT, and bidirectional lateral MOSFET.

13. The PDP driving apparatus according to claim 10, wherein the bidirectional switch element is formed of wide band gap semiconductor which has wider band gap than silicon.

14. The PDP driving apparatus according to claim 13, wherein the wide band gap semiconductor contains at least one of silicon carbide, diamond, gallium nitride, molybdenum oxide and zinc oxide.

15. The PDP driving apparatus according to claim 10, wherein the separation switch is connected to a protection circuit in parallel.

16. The PDP driving apparatus according to claim 15, wherein the protection circuit is a constant voltage circuit.

17. The PDP driving apparatus according to claim 15, wherein the protection circuit includes a switch element.

18. The PDP driving apparatus according to claim 15, wherein the protection circuit includes a Zener diode.

19. The PDP driving apparatus according to claim 15, wherein the protection circuit includes a resistor.

20. The PDP driving apparatus according to claim 15, wherein the protection circuit includes a capacitor.

21. The PDP driving apparatus according to claim 1, further comprising:

an inductor electrically connected to at least sustain electrodes, scan electrodes, or address electrodes; and

a recovery switch element operable to form, when the recovery switch element is in ON period, a path in which a resonance current due to the inductor and the plasma display panel flows,

wherein the recovery switch element is a bidirectional switch element.

22. The PDP driving apparatus according to claim 21, wherein the bidirectional switch element includes at least one of JFET, MESFET, reverse blocking IGBT, and bidirectional lateral MOSFET.

23. The PDP driving apparatus according to claim 21, wherein the bidirectional switch element is formed of wide band gap semiconductor which has wider band gap than silicon.

24. The PDP driving apparatus according to claim 23, wherein the wide band gap semiconductor contains at least one of silicon carbide, diamond, gallium nitride, molybdenum oxide and zinc oxide.

25. The PDP driving apparatus according to claim 1, further comprising a high side ramp waveform generating section for generating a rising ramp waveform, wherein a start voltage of the rising ramp waveform of the high side ramp waveform generating section can be arbitrarily adjusted.

26. The PDP driving apparatus according to claim 25, wherein the high side ramp waveform generating section includes a Zener diode.

27. A plasma display comprising:

a plasma display panel having sustain electrodes, scan electrodes, and address electrodes; and

a PDP driving apparatus according to claim 1, operable to drive the plasma display panel.

28. A PDP driving apparatus for driving a plasma display panel operable to display an image with phosphor emitting a light by the discharge between electrodes, comprising an electrode driving section that applies a predetermined voltage to the electrodes, wherein the electrode driving section includes a bidirectional switch element.

29. The PDP driving apparatus according to claim 28, wherein the bidirectional switch element includes at least one of JFET, MESFET, reverse blocking IGBT, and bidirectional lateral MOSFET.

30. The PDP driving apparatus according to claim 28, wherein the bidirectional switch element is formed of wide band gap semiconductor which has wider band gap than silicon.

31. The PDP driving apparatus according to claim 30, wherein the wide band gap semiconductor contains at least one of silicon carbide, diamond, gallium nitride, molybdenum oxide and zinc oxide.

32. A plasma display comprising:

a plasma display panel operable to display an image with phosphor emitting a light by the discharge between electrodes; and

a PDP driving apparatus according to claim 28, operable to drive the plasma display panel.