Plasma display apparatus and method of driving plasma display panel

Abstract

A plasma display apparatus and a method of driving a plasma display panel are disclosed. The plasma display apparatus includes a plasma display panel including a first electrode and a second electrode, and an integrated sustain driver. The integrated sustain driver supplies a sustain signal of a positive polarity and a sustain signal of a negative polarity to the first electrode during a sustain period. Two light emissions occur during at least one period of a supply period of the sustain signal of the positive polarity or a supply period of the sustain signal of the negative polarity.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

The accompany drawings, which are included to provide a further understanding of the invention and are incorporated on and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.

FIG. 1 schematically illustrates a plasma display apparatus according to one embodiment;

FIG. 2 illustrates one example of a plasma display panel;

FIG. 3 illustrates one example of a method of driving a plasma display panel;

FIG. 4 illustrates an integrated sustain driver;

FIG. 5 illustrates one example of a method of driving the integrated sustain driver of FIG. 4; and

FIGS. 6 a to 6m illustrate operations of the integrated sustain driver of FIG. 4 in accordance with the driving method of FIG. 5.

Claims

1. A plasma display apparatus comprising: a plasma display panel including a first electrode and a second electrode; andan integrated sustain driver that supplies a sustain signal of a positive polarity and a sustain signal of a negative polarity to the first electrode during a sustain period, wherein two light emissions occur during at least one period of a supply period of the sustain signal of the positive polarity or a supply period of the sustain signal of the negative polarity.

2. The plasma display apparatus of claim 1, wherein the integrated sustain driver includes an inductor unit for generating mutual inductance.

3. The plasma display apparatus of claim 1, wherein the integrated sustain driver generates a first light emission in the plasma display panel by resonance generated between the inductor unit and the plasma display panel, and the integrated sustain driver generates a second light emission in the plasma display panel using a positive sustain voltage supplied from a positive sustain voltage source or a negative sustain voltage supplied from a negative sustain voltage source.

4. The plasma display apparatus of claim 3, wherein a luminance level of the second light emission is more than a luminance level of the first light emission.

5. A plasma display apparatus comprising: a plasma display panel including a first electrode and a second electrode;a positive sustain controller that supplies a positive sustain voltage supplied from a positive sustain voltage source to the first electrode during a sustain period;a negative sustain controller that supplies a negative sustain voltage supplied from a negative sustain voltage source to the first electrode during the sustain period;an inductor unit that generates resonance with a plasma display panel and generates mutual inductance;a resonance controller that control the generation of the resonance;a reverse blocking unit that is electrically connected between the inductor unit and the resonance controller and prevents the flowing of an inverse current; anda bypass unit that forms a path of a current generated by the mutual inductance.

6. The plasma display apparatus of claim 5, wherein the inductor unit includes a first inductor that generates resonance to change a voltage of the first electrode from a negative voltage level to a positive voltage level, anda second inductor that generates resonance to change the voltage of the first electrode from a positive voltage level to a negative voltage level.

7. The plasma display apparatus of claim 6, wherein inductance of the first inductor is equal to inductance of the second inductor.

8. The plasma display apparatus of claim 6, wherein the resonance controller includes a first resonance switch that controls the generation of resonance for changing the voltage of the first electrode from a negative voltage level to a positive voltage level, anda second resonance switch that controls the generation of resonance for changing the voltage of the first electrode from a positive voltage level to a negative voltage level.

9. The plasma display apparatus of claim 8, wherein a first light emission occurs in the plasma display panel during a period where the first resonance switch or the second resonance switch is turned on.

10. The plasma display apparatus of claim 8, wherein the positive sustain controller includes a positive sustain switch, the negative sustain controller includes a negative sustain switch, andat least one of the positive sustain switch or the negative sustain switch is turned on after the passage of a predetermine period of time from a turn-off time point of the first resonance switch and the second resonance switch.

11. The plasma display apparatus of claim 10, wherein the predetermine period of time ranges from 100 ns to 500 ns.

12. The plasma display apparatus of claim 10, wherein a second light emission occurs in the plasma display panel during a period where at least one of the positive sustain switch or the negative sustain switch is turned on.

13. The plasma display apparatus of claim 8, wherein the reverse blocking unit includes a first reverse blocking diode that prevents an inverse current between the first inductor and the first resonance switch, anda second reverse blocking diode that prevents an inverse current between the second inductor and the second resonance switch.

14. The plasma display apparatus of claim 6, wherein the bypass unit includes a first bypass diode that forms a path of a current generated by an induction voltage of the first inductor induced by the mutual inductance, anda second bypass diode that forms a path of a current generated by an induction voltage of the second inductor induced by the mutual inductance.

15. A method of driving a plasma display panel including a first electrode and a second electrode, the method comprising: maintaining a voltage of the first electrode at a negative sustain voltage;gradually rising the voltage of the first electrode from the negative sustain voltage to a positive sustain voltage;gradually falling the voltage of the first electrode from the positive sustain voltage to a first voltage, that is lower than the positive sustain voltage and is higher than the ground level voltage;rising the voltage of the first electrode from the first voltage to the positive sustain voltage;maintaining the voltage of the first electrode at the positive sustain voltage;gradually falling the voltage of the first electrode from the positive sustain voltage to the negative sustain voltage;gradually rising the voltage of the first electrode from the negative sustain voltage to a second voltage, that is higher than the negative sustain voltage and is lower than the ground level voltage; andfalling the voltage of the first electrode from the second voltage to the negative sustain voltage.

16. The method of claim 15, wherein a first light emission occurs in the plasma display panel through at least one of the gradual rising of the voltage of the first electrode from the negative sustain voltage to the positive sustain voltage, or the gradual falling of the voltage of the first electrode from the positive sustain voltage to the negative sustain voltage.

17. The method of claim 16, wherein a second light emission occurs in the plasma display panel through at least one of the rising of the voltage of the first electrode from the first voltage to the positive sustain voltage, or the falling of the voltage of the first electrode from the second voltage to the negative sustain voltage.

18. The method of claim 17, wherein a luminance level of the second light emission is more than a luminance level of the first light emission.