PLASMA DISPLAY APPARATUS AND DRIVING METHOD THEREOF

Abstract

A plasma display apparatus and a driving method thereof are provided. The plasma display apparatus and a driving method thereof represent an image by a combination of a plurality of subfields, supply a first pulse to the first electrode in a negative polarity direction before a reset period for initializing in at least one of the plurality of subfields, supply a second pulse to the second electrode in an opposite polarity direction of the first pulse while the first pulse is supplied to the first electrode, and do not supply a sustain pulse to at least one of the first electrode and the second electrode in a sustain period after the reset period.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be described in detail with reference to the following drawings in which like numerals refer to like elements.

FIG. 1 is a diagram illustrating a configuration of a plasma display apparatus according to the present invention;

FIGS. 2A and 2B are views illustrating an example of a structure of a plasma display panel that is comprised in the plasma display apparatus according to the present invention;

FIG. 3 is a diagram illustrating a frame for representing gray level of an image in the plasma display apparatus according to the present invention;

FIGS. 4A and 4B are diagrams illustrating an example of an operation of a driver of the plasma display apparatus according to the present invention;

FIG. 5 is a diagram illustrating another example of an operation of the driver of the plasma display apparatus according to the present invention;

FIG. 6 is a diagram illustrating a method of setting a low gray level subfield within a frame; and

FIGS. 7 to 9 diagrams illustrating other examples of a driving pulse that is applied to a scan electrode and a sustain electrode in a sustain period of FIG. 4A.

Claims

1. A plasma display apparatus comprising: a plasma display panel comprising a first electrode and a second electrode; anda driver for supplying a first pulse to the first electrode in a negative polarity direction before a reset period in at least one of a plurality of subfields for representing an image, supplying a second pulse to the second electrode in an opposite polarity direction of the first pulse while the first pulse is supplied to the first electrode, and supplying a sustain pulse to only one electrode of the first electrode and the second electrode in a sustain period after the reset period.

2. The plasma display apparatus of claim 1, wherein at least one of the plurality of subfields is a first subfield in one frame.

3. The plasma display apparatus of claim 1, wherein at least one of the plurality of subfields is a low gray level subfield.

4. The plasma display apparatus of claim 2, wherein the first subfield is a subfield having a lowest gray level weight among the plurality of subfields.

5. The plasma display apparatus of claim 1, wherein a voltage of the second pulse is substantially equal to that of the sustain pulse.

6. The plasma display apparatus of claim 1, wherein a positive polarity bias voltage is supplied to the second electrode at approximately a start time point of an address period after the reset period.

7. The plasma display apparatus of claim 1, wherein a lowest voltage of the first pulse is equal to or higher than a lowest voltage of a scan pulse that is supplied to the first electrode in an address period after the reset period.

8. A plasma display apparatus comprising: a plasma display panel comprising a first electrode and a second electrode; anda driver for supplying a first pulse to the first electrode in a negative polarity direction before a reset period in at least one of a plurality of subfields for representing an image, supplying a second pulse to the second electrode in an opposite polarity direction of the first pulse while the first pulse is supplied to the first electrode, and supplying a voltage that is lower than a voltage of a sustain pulse to one electrode of the first electrode and the second electrode in a sustain period after the reset period.

9. The plasma display apparatus of claim 8, wherein a voltage that is lower than the voltage of the sustain pulse is a voltage of a ground level.

10. The plasma display apparatus of claim 8, wherein at least one of the plurality of subfields is a low gray level subfield having a low brightness weight.

11. The plasma display apparatus of claim 10, wherein the low gray level subfield is at least one of subfields from a subfield having a lowest brightness weight to a fifth subfield in the increasing order of a brightness weight among the plurality of subfields.

12. The plasma display apparatus of claim 10, wherein the low gray level subfield is a subfield having a lowest brightness weight among the plurality of subfields.

13. The plasma display apparatus of claim 8, wherein a voltage of the second pulse is substantially equal to that of the sustain pulse.

14. The plasma display apparatus of claim 8, wherein a positive polarity bias voltage is supplied to the second electrode at approximately a start time point of an address period after the reset period.

15. The plasma display apparatus of claim 8, wherein a lowest voltage of the first pulse is equal to or higher than that of a scan pulse that is supplied to the first electrode in an address period after the reset period.

16. A method of driving a plasma display apparatus for representing an image by a combination of a plurality of subfields, the method comprising: supplying a first pulse to the first electrode in a negative polarity direction before a reset period for initializing in at least one of the plurality of subfields;supplying a second pulse to the second electrode in an opposite polarity direction of the first pulse while the first pulse is supplied to the first electrode; andnot supplying a sustain pulse to at least one of the first electrode and the second electrode in a sustain period after the reset period.