Flat panel display and display device

Abstract

A flat panel display includes a discharge space filled with discharge gas and a plurality of electrodes for generating discharge in the discharge space. Ferroelectric powder is disposed between the electrodes and the discharge space so that the ferroelectric powder contacts the discharge space.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic diagram of a cell having a two-electrode structure.

FIG. 2 is a diagram showing wall voltage transfer characteristics.

FIG. 3 is a diagram showing P(V) hysteresis characteristics of a ferroelectric.

FIG. 4 is a diagram showing a structure of a display device according to one embodiment of the present invention.

FIG. 5 is an exploded perspective view showing a cell structure of a plasma display panel according to one embodiment of the present invention.

FIG. 6 is a diagram showing a Vt closed curve in a cell of a three-electrode structure.

FIG. 7 is a diagram showing a ferroelectric inversional (inverted) curve in the structure including a ferroelectric disposed on the back side of a discharge space.

FIGS. 8A and 8B are diagrams showing a relationship between the Vt closed curve shown in FIG. 6 and the ferroelectric inversional curve shown in FIG. 7.

FIG. 9 is a diagram of drive voltage waveforms showing a general drive sequence of a sub frame.

FIG. 10 is a diagram showing the ferroelectric inversional curve in the structure including a ferroelectric disposed on the front side of the discharge space.

FIG. 11 is a diagram showing a relationship between the Vt closed curve shown in FIG. 6 and the ferroelectric inversional curve shown in FIG. 10.

Claims

1. A flat panel display comprising a discharge space filled with discharge gas and a plurality of electrodes for generating discharge in the discharge space, wherein ferroelectric powder is disposed between the electrodes and the discharge space so that the ferroelectric powder contacts the discharge space.

2. The flat panel display according to claim 1, wherein coercive electric field intensity of the ferroelectric is lower than or equal to 50 kV/cm.

3. The flat panel display according to claim 2, further comprising a fluorescent material layer for emitting light due to discharge in the discharge space, wherein the ferroelectric powder is mixed in the fluorescent material layer.

4. The flat panel display according to claim 3, wherein a mixing ratio of the ferroelectric powder is within a range from 0.1 ppm to 10% by weight.

5. The flat panel display according to claim 2, further comprising an insulator layer for covering the electrodes, wherein the ferroelectric powder is mixed in the insulator layer.

6. The flat panel display according to claim 5, wherein a mixing ratio of the ferroelectric powder is within a range from 0.1 ppm to 10% by volume.

7. A plasma display panel comprising: a pair of first and second substrates facing each other;a discharge space that is formed between the substrates and filled with discharge gas;row electrodes arranged on the first substrate;column electrodes arranged on the second substrate; andfluorescent material layers that are arranged on the second substrate and emit light due to discharge in the discharge space, whereinferroelectric powder having coercive electric field intensity lower than or equal to 10 kV/cm is mixed in the fluorescent material layer at a mixing ratio within a range from 0.1 ppm to 10% by weight.

8. A display device comprising a flat panel display and a driving circuit for driving the flat panel display, wherein the flat panel display includes a discharge space filled with discharge gas, a plurality of electrodes for generating discharge in the discharge space, and ferroelectric powder disposed between the electrodes and the discharge space, the ferroelectric powder contacting the discharge space, andthe driving circuit generates an electric field for generating polarization inversion of the ferroelectric without generating discharge.

9. The display device according to claim 8, wherein coercive electric field intensity of the ferroelectric is lower than or equal to 50 kV/cm.

10. A display device comprising a plasma display panel and a driving circuit for driving the plasma display panel, wherein the plasma display panel includes first and second substrates facing each other, a discharge space that is formed between the substrates and filled with discharge gas, first and second row electrodes arranged on the first substrate, an insulator layer for covering the first and the second row electrodes, column electrodes arranged on the second substrate, and fluorescent material layers that are arranged on the second substrate and in which ferroelectric powder having coercive electric field intensity lower than or equal to 10 kV/cm is mixed at a mixing ratio within a range from 0.1 ppm to 10% by weight,the driving circuit applies sustain pulse to the first and the second row electrodes for generating display discharge during a display period after an address period, andin the address period, the driving circuit applies a scan pulse for a row selection to each of the second row electrodes and applies an address pulse for a column selection to the column electrode in accordance with display data, and before the application of the scan pulse to each of the second row electrodes, the driving circuit applies a pulse having a polarity opposite to a polarity of the scan pulse for generating polarization inversion of the ferroelectric without generating discharge.