Plasma display apparatus

Abstract

A method of driving a plasma display apparatus is provided. In the method, a positive first pulse and a negative second pulse are alternatively supplied to a first electrode in a sustain period. A second electrode sustains a ground level in a second electrode while the positive first pulse is supplied to the first electrode. Then, the absolute voltage values of the positive first pulse and the negative second pulse are controlled to be different.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The implementation of this document will be described in detail with reference to the following drawings in which like numerals refer to like elements.

FIG. 1 is a schematic diagram illustrating a plasma display device according to an embodiment of the present invention;

FIG. 2 is a timing diagram illustrating a driving waveform supplied to a plasma display panel according to an embodiment of the present invention;

FIG. 3 is a timing diagram illustrating a driving pulse supplied to scan electrodes and sustain electrodes in a sustain period of FIG. 2 according to a first embodiment of the present invention;

FIG. 4 is a timing diagram illustrating a driving pulse supplied to scan electrodes and sustain electrodes in a sustain period of FIG. 2 according to the second embodiment of the present invention;

FIG. 5 is a timing diagram illustrating a driving pulse supplied to scan electrode and sustain electrodes in a sustain period of FIG. 2 according to the third embodiment of the present invention;

FIG. 6 is a schematic diagram illustrating a plasma display apparatus according to another embodiment of the present invention;

FIG. 7 is a timing diagram illustrating a driving waveform supplied to a plasma display panel according to another embodiment of the present invention;

FIG. 8 is a timing diagram illustrating a driving waveform supplied to a plasma display panel according to another embodiment of the present invention; and

FIG. 9 is a timing diagram illustrating a driving waveform supplied to a plasma display panel according to still another embodiment of the present invention.

Claims

1. A method of driving a plasma display apparatus by dividing one subfield into at least an address period and a sustain period, comprising: alternatively supplying a positive first pulse and a negative second pulse to a first electrode in a sustain period;sustaining a ground level at a second electrode while the positive first pulse is supplied to the first electrode; andcontrolling absolute voltage values of the positive first pulse and the negative second pulse to be different.

2. The method of claim 1, wherein, in the sustain period, the positive first pulse is supplied to the second electrode while the negative second pulse is supplied to the first electrode.

3. The method of claim 2, wherein the second electrode sustains a predetermined voltage for the address period.

4. The method of claim 2, wherein a third electrode sustains a ground level for the sustain period.

5. The method of claim 4, wherein the third electrode sustains a ground level while the negative second pulse is supplied to the first electrode.

6. The method of claim 2, wherein a second positive pulse is supplied to a third electrode while the positive first pulse is supplied to the first electrode.

7. The method of claim 1, wherein an absolute voltage value of the first pulse is greater than an absolute voltage value of the second pulse.

8. The method of claim 1, wherein a difference between absolute voltage values of the first and second pulses is substantially identical to a voltage of a data pulse supplied to a third electrode.

9. The method of claim 1, wherein a raising period of the positive first pulse is shorter than a raising period of the negative second pulse.

10. The method of claim 9, wherein the raising time of the first pulse is longer than about 300 ns and shorter than about 1 ms.

11. The method of claim 9, wherein a ratio of the arising time of the first pulse and a falling time of the second pulse is larger than about 1:1.2 and smaller than about 1:1.5.

12. The method of claim 1, wherein a bias period of the positive first pulse is shorter than a bias period of the negative second pulse.

13. The method of claim 12, wherein the bias period of the first pulse is longer than about 500 ns and shorter than about 2 ms.

14. The method of claim 12, wherein a ratio of the bias period of the first pulse and the bias period of the second pulse is larger than about 1:1.3 and smaller than about 1:1.8.

15. A method of driving a plasma display apparatus by dividing one subfield into at least an address period and a sustain period, comprising: alternatively supplying a first positive pulse and a second negative pulse having an absolute voltage value smaller than that of the first pulse in the sustain period;supplying the first positive pulse to a second electrode while the second pulse is supplied to the first electrode; andsupplying a second positive pulse to a third electrode while the first pulse is supplied to the first electrode.

16. The method of claim 15, wherein the second electrode sustains a predetermined voltage for the address period.

17. The method of claim 15, wherein a voltage of the first positive pulse supplied to the second electrode is smaller than a voltage of the second positive pulse supplied to the third electrode.

18. The method of claim 15, wherein the positive bias voltage is supplied to the third electrode in a reset period that is a period precedes the address period.

19. A method of driving a plasma display apparatus by dividing one subfield into at least an address period and a sustain period, comprising: alternatively supplying a positive first pulse and a negative second pulse having the same absolute voltage value to a first electrode in the sustain period; andsupplying a negative third pulse to a second electrode while the positive first pulse is supplied to the first electrode.

20. The method of claim 19, wherein the absolute voltage value of the third pulse is substantially identical to a voltage of a data pulse supplied to a third electrode in the address period.

21. The method of claim 20, wherein the third electrode sustains a ground level for the sustain period.

22. The method of claim 19, wherein the second electrode sustains a predetermined voltage for the address period.