BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings, in which like reference numerals designate similar components throughout the figures, and in which:
FIG. 1 illustrates sustain pulse waveforms (Vs1, Vs2) applied to sustain electrodes (X1 electrodes, X2 electrodes, Y1 electrodes and Y2 electrodes) during a sustain period of a plasma display device in accordance with Embodiment 1 of the present invention, a waveform of a difference (Vs1−Vs2), and a waveform of light emission intensity;
FIG. 2 illustrates an arrangement of electrodes within an ac three-electrode surface-discharge type PDP in accordance with Embodiment 1 of the present invention, a basic configuration of a driving circuit thereof, and light emissions generated by discharges;
FIG. 3(
a) is a plan view of straight ribs and electrodes used in the ac three-electrode surface-discharge type PDP of Embodiment 1, viewed from a direction corresponding to a direction D3 depicted in FIG. 10;
FIG. 3(
b) is a plan view of the straight ribs only, used in the ac three-electrode surface-discharge type PDP of Embodiment 1, viewed from the direction corresponding to the direction D3 depicted in FIG. 10;
FIG. 4(
a) is a plan view of a box rib and electrodes used in an ac three-electrode surface-discharge type PDP of an example of Embodiment 1, viewed from the direction corresponding to the direction D3 depicted in FIG. 10;
FIG. 4(
b) is a plan view of the box rib only, used in the ac three-electrode surface-discharge type PDP of the example of Embodiment 1, viewed from the direction corresponding to the direction D3 depicted in FIG. 10;
FIG. 5 illustrates an arrangement of electrodes within a panel of an ac three-electrode surface-discharge type PDP in accordance with Embodiment 2 of the present invention, a basic configuration of a driving circuit thereof, and discharges;
FIG. 6(
a) is a plan view of straight ribs and electrodes used in an ac three-electrode surface-discharge type PDP of Embodiment 2, viewed from the direction corresponding to the direction D3 depicted in FIG. 10;
FIG. 6(
b) is a plan view of the straight ribs only, used in the ac three-electrode surface-discharge type PDP of Embodiment 2, viewed from the direction corresponding to the direction D3 depicted in FIG. 10;
FIG. 7 illustrates sustain pulse waveforms (Vsx, Vsy) applied to sustain electrodes (X electrodes and Y electrodes) during a sustain period of the plasma display device in accordance with Embodiment 2 of the present invention, a waveform of a difference (Vsx−Vsy), and a waveform of light emission intensity during one sustain repetition period Tf;
FIG. 8 illustrates an arrangement of electrodes within a panel of an ac two-electrode vertical-discharge type PDP in accordance with Embodiment 3 of the present invention, a basic configuration of a driving circuit thereof, and discharges;
FIG. 9 is a perspective view of ribs and electrodes of the ac two-electrode vertical-discharge type PDP of Embodiment 3;
FIG. 10 is an exploded perspective view of an example of a conventional ac three-electrode surface-discharge type PDP;
FIG. 11 is a cross-sectional view of a plasma display panel shown in FIG. 10 viewed in a direction of an arrow D1;
FIG. 12 is a cross-sectional view of the plasma display panel shown in FIG. 10 viewed in a direction of an arrow D2;
FIG. 13 is a block diagram illustrating a basic configuration of a conventional plasma display device;
FIG. 14(
a) is a time chart illustrating a driving voltage during one TV field required for displaying one picture on the PDP shown in FIG. 10;
FIG. 14(
b) illustrates waveforms of voltages applied to an A electrode 59, an X electrode 64 and a Y electrode 65 during the address period 80 shown in FIG. 14(a);
FIG. 14(
c) illustrates sustain pulse voltages applied to the X and Y electrodes, which are the sustain electrodes, all at the same time, and a voltage applied to the address electrodes, during the sustain period 81 shown in FIG. 14(a);
FIG. 15(
a) is a plan view of box rib and electrodes used in the ac three-electrode surface-discharge type PDP of Embodiment 2, viewed from the direction corresponding to the direction D3 depicted in FIG. 10;
FIG. 15(
b) is a plan view of the box rib only, used in the ac three-electrode surface-discharge type PDP of Embodiment 2, viewed from the direction corresponding to the direction D3 depicted in FIG. 10;
FIG. 16 is a graph showing a relationship between luminous efficacy and a partial pressure of Xe and a relationship between a discharge-space voltage and the partial pressure of Xe;
FIG. 17 is a graph showing a sustain pulse repetition period, and a stable-discharge region versus Vp;
FIG. 18 is a graph showing discharge stability and a pre-discharge-voltage Vp dependency of luminous efficacy for a case where the two-step discharge driving waveform shown in FIG. 1 was employed as a sustain waveform;
FIG. 19 is a graph showing discharge stability and a pre-discharge-voltage Vp dependency of luminous efficacy for a case where the two-step discharge driving waveform shown in FIG. 1 was employed as a sustain waveform;
FIG. 20 is a graph showing discharge stability and a pre-discharge-voltage Vp dependency of luminous efficacy for a case where the two-step discharge driving waveform shown in FIG. 1 was employed as a sustain waveform; and
FIG. 21 is a graph showing discharge stability and a pre-discharge-voltage Vp dependency of luminous efficacy for a case where the two-step discharge driving waveform shown in FIG. 1 was employed as a sustain waveform.
Patent Application
20070229399
