JPH11149274A - Plasma display panel and driving method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To restrain the peak value of discharge current with brightness hardly changed, and reduce the cost of a drive circuit and defective display, by impressing a pulse, which rises preceding a pulse impressed on a first or a second electrode and falls quickly after completion of discharge generated by the impressed pulse, to a specific electrode. SOLUTION: A pulse rising from OV a little preceding respective maintenance pulses and after the lapse of about 1 μs, falling to OV again is impressed on a set W of first row electrodes. By setting voltage after rising of discharge accelerating pulse to be a sufficiently small value than discharge starting voltage between the row electrode W and a line electrode, in a cell to which wall charge is not written in adress term, namely in a cell in which maintenance discharge is not performed, discharge between the row electrode W and the line electrode is not generated. Further because the wall change accumulated since falling of the discharge accelerating pulse is utilized, the voltage value after rising of the discharge accelerating pulse can be restrained to be low.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an AC plasma display panel, and more particularly to a surface discharge AC plasma display panel and a method of driving the same.

[0002]

2. Description of the Related Art FIG. 9 is a partial perspective view showing a conventional surface discharge AC type plasma display panel. As shown, the surface discharge AC type plasma display panel 100 is configured as follows. Front glass substrate 102 as a display surface
The first row electrode 104 (X1 to Xn) and the second row electrode 1 are arranged on the front glass substrate 102 so as to form a pair with each other.
05 (Y1 to Yn) are formed, and these row electrodes 104,
A dielectric layer 106 is coated on 105, and an MgO (magnesium oxide) 107 is further coated thereon. Third column electrodes 108 (W1 to Wn) are formed on the rear glass substrate 103 so as to be orthogonal to the row electrodes 104 and 105, and the discharge space is filled with a gas mainly composed of a rare gas. Have been. Further, a phosphor layer 109 that emits red, green, and blue light by ultraviolet rays generated from discharge is provided on the column electrode 108. The intersections of the row electrodes 104 and 105, which are paired with each other, and the column electrodes 108 which are orthogonal to each other are separated by partition walls 110, and three sets of red, green and blue constitute one pixel.

Next, the operation will be described. Since the first row electrode 104 and the second row electrode 105 for performing a discharge for display are covered with the dielectric layer 106, once a discharge occurs between the electrodes, the charged particles generated in the discharge space are not applied. It moves in the direction of the electric field and accumulates on the dielectric layer 106. These accumulated charged particles are called wall charges. Since the electric field formed by the wall charges has the opposite polarity to the applied electric field, the discharge disappears as the wall charges grow. After the discharge is extinguished, when an electric field whose polarity is inverted to that of the previous discharge is applied, the voltage formed by the wall charges and the applied voltage are superimposed, so the discharge starts with a smaller applied voltage than the previous discharge I do. Thereafter, the discharge can be maintained by the applied voltage having the small absolute value and the polarity is alternately inverted. Such a function is called a memory effect. A discharge sustained at a low applied voltage using the memory effect is called a sustain discharge, and a voltage pulse applied to the first row electrode 104 and the second row electrode 105 every half cycle is called a sustain pulse. The sustain discharge continues as long as the wall charges are not extinguished. The operation of extinguishing the wall charges is called erasing, while forming the wall charges on the dielectric layer 106 first is called writing.

FIG. 10 is a configuration diagram of one frame in the case of performing a gradation display of a conventional plasma display panel disclosed in, for example, JP-A-7-150218. One frame is a time for displaying one picture on the screen.
In the figure, a display line is a line in the row direction composed of first and second row electrodes of an AC plasma display panel, and the horizontal direction in the figure is a time axis. One frame is divided into a plurality of subfields, gradation control is performed, and each subfield is composed of a reset period in which erasing is performed, an address period in which writing is performed, and a sustain discharge period for performing display light emission. .

FIG. 11 shows one of the conventional plasma display panels disclosed in, for example, JP-A-7-150218.
FIG. 7 is a voltage waveform diagram showing a driving method in a subfield.
In this conventional example, the first row electrodes X are commonly connected on the entire panel, and a common voltage is applied to all the row electrodes X. On the other hand, the second row electrode Y and the column electrode W
Can apply an individual voltage to each line.
The voltage waveforms shown in the figure are column electrodes Wj, first row electrodes
X, the applied voltage waveform of the second row electrodes Y ₁ , Y ₂ ,..., Y _n .

First, the reset period is a period in which all the cells of the AC type plasma display panel are brought into the same state. In this period, the first row electrode X is connected between the first row electrode X and the second row electrode Y. , A full write pulse P _p (priming pulse) set to be equal to or higher than the discharge start voltage is applied (a in the figure). As a result, all the cells are discharged, wall charges of opposite polarities are accumulated in each of the XY electrodes, and the discharge ends. Next, on the entire surface write pulse P _p is completed at the time of drawing b, and the applied voltage of the first row electrode X is eliminated, the voltage due to accumulated wall charge causes discharge between X-Y electrodes since to be sufficiently larger voltage value of the entire writing pulse P _p is set, it is possible to re-occur X-Y discharge, charged particles generated by the discharge neutralizes the wall charges, to erase all the cells .

The address period is a period for controlling the presence or absence of wall charges in each cell by selecting an arbitrary cell on the screen in a matrix with row electrodes and column electrodes. In the address period sequentially to the second row electrodes Y ₁ to Y _n, a negative scan pulse P _Sa is scanned applied. On the other hand, the column electrodes W positive address pulse P _a arbitrary cell is applied to a matrix selected according to the image data, it is generated discharge between only Y: W electrodes selected cell. At this time, since the sub-scanning voltage is applied to the commonly connected first row electrodes X, a discharge between the X and Y electrodes occurs, and the first row electrodes X and the second row electrodes X are connected to each other.
The wall charges are accumulated in the row electrodes Y.

After the scanning of all the second row electrodes Y _{1 to} Y _n is completed, a sustain discharge period continues. In this period, a positive sustain pulse is alternately applied to all the first row electrodes X and all the second row electrodes Y alternately, and only the cells that have accumulated the wall charges during the address period emit light due to the sustain discharge. I do. Emission luminance per subfield is determined by the number of sustain pulses P _s.

In the above driving method, in the sustain discharge period in which all cells are driven by a common pulse and the reset period, the timing at which discharge occurs is temporally concentrated, and a spike-like discharge current with a very high peak flows. . Due to the high peak discharge current, the PDP drive circuit requires a large current capacity.

In Japanese Patent Application Laid-Open No. 6-4039, a drive circuit for a row electrode is divided into blocks, and the phase of a sustain pulse in each block is shifted to disperse the time at which a sustain discharge occurs, thereby increasing the peak of the discharge current. Has been suppressed.

[0011]

In the conventional driving method, during the sustain discharge period in which all the cells are driven by a common pulse and the reset period, the timing at which the discharge occurs is temporally concentrated and the peak is extremely low. Since a high spike-like discharge current flows, a drive circuit having a large current capacity is required, which increases the manufacturing cost.

Further, the electrode has a constant resistance value for reasons of the manufacturing method, and when an excessive discharge current flows,
A voltage drop not negligible in driving occurred in the electrodes, and it was impossible to apply a uniform voltage in the panel. This voltage drop is one of the causes of display failure.

On the other hand, when the discharge current is dispersed by changing the phase of the sustain pulse to suppress the peak of the current, the current capacity of the power supply is reduced, but the discharge current within the same row electrode is reduced. Since the same discharge current flows when the sustain pulse phase is changed, the voltage drop in the electrode due to the discharge current cannot be reduced.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and it is possible to reduce the cost of a driving circuit by suppressing the peak value of a discharge current without substantially changing luminance. Another object of the present invention is to provide a plasma display panel with less display defects and a driving method thereof.

[0015]

A plasma display panel according to a first configuration of the present invention is covered with a dielectric,
A plurality of pairs of a first electrode and a second electrode arranged in close proximity and in parallel, and a plurality of third electrodes arranged so as to form a cell orthogonal to the first electrode and the second electrode. And a plurality of pulse trains having the same polarity alternately applied to the first electrode and the second electrode, wherein the pulse is alternately applied to the first electrode and the second electrode. During a period in which a display discharge or an erase discharge is performed, a certain set of the third electrodes rises prior to a pulse applied to the first or second electrode, and Alternatively, a pulse that falls immediately after the end of the discharge generated by the pulse applied to the second electrode is applied.

The plasma display panel according to the second configuration of the present invention is the plasma display panel according to the first configuration, in which the third pulse to which the pulse is applied is applied.
In the method of selecting a set of electrodes, a plurality of different sets of third electrodes are selected for each time in units of a cycle of a pulse for performing a display discharge alternately applied to the first or second electrode. The number of pulses for performing the display discharge included in the selected period of each of the third electrode sets within the unit period for expressing the gradation is made uniform in all the cells.

A driving method of a plasma display panel according to a third configuration of the present invention is characterized in that a plurality of pairs of a first electrode and a second electrode, which are covered with a dielectric and are arranged in close proximity to each other, A plurality of third electrodes arranged to form a cell orthogonal to the first electrode and the second electrode;
In a plasma display panel for performing display by gas discharge excitation between a first electrode and a second electrode, a plurality of pulse trains having the same polarity are alternately applied to the first electrode and the second electrode, and the display discharge is performed. Or during the erase discharge period,
For a certain set of the third electrodes, the pulse rises prior to the pulse applied to the first or second electrode, and the discharge generated by the pulse applied to the first or second electrode. A pulse that falls immediately after the end is applied.

A method for driving a plasma display panel according to a fourth configuration of the present invention is directed to a method for selecting the third set of electrodes to which the pulse is applied in the method for driving a plasma display panel according to the third configuration. ,
A plurality of different sets of third electrodes are selected for each unit of time of a cycle of a pulse for performing a display discharge alternately applied to the first or second electrode, and are used in a unit period for expressing a gradation. In the above, the number of pulses for performing the display discharge included in the selected period of each third electrode set is made uniform in all cells.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1. Embodiments of the present invention will be described below. FIG. 1 shows Embodiment 1 of the present invention.
1 is a sectional view of a cell of a surface discharge AC type plasma display panel to which a driving method of a plasma display panel is applied. As shown, the cell 1 of the surface discharge AC type plasma display panel is configured as follows. A front glass substrate 2 and a rear glass substrate 3, which are display surfaces, are opposed to each other across a discharge space, and the first row electrode 4 (X) and the second row electrode A row electrode 5 (Y) is formed, a dielectric layer 6 is formed on the row electrodes 4 and 5, and further a MgO (magnesium oxide)
7 are coated. A third glass substrate 3 is provided on the rear glass substrate 3 so as to form cells at right angles to the row electrodes 4 and 5.
Are formed, and a phosphor layer 9 emitting red, green, and blue light is provided on the column electrode 8 in a stripe shape. Here, the third column electrodes 8 each include at least two electrode sets W and W ′. The grouping of the column electrodes 8 may be, for example, W for even-numbered column electrodes and W ′ for odd-numbered column electrodes,
It may be divided into three or more sets. The discharge cells are separated by partition walls 10 that maintain a discharge space, and are filled with a discharge gas mainly composed of a rare gas.

FIG. 2 is a voltage waveform (timing chart) showing a part of the sustain discharge period in the method of driving the plasma display panel according to the first embodiment of the present invention.
In the figure, voltage waveforms are voltage waveforms applied to a row electrode X, a row electrode Y, a first column electrode set W, and a second column electrode set W ′ in order from the top. The figure shows a sustain discharge period starting from a sustain pulse applied to the row electrode X. First
A pulse which rises from 0V slightly before each sustain pulse, and falls to 0V again after about 1 μs is applied to the set W of column electrodes. This is called a discharge promotion pulse. At this time, a constant voltage is applied to the second set of column electrodes W ′ in a range that does not cause a discharge due to the sustain pulse applied to the row electrodes X and Y during the sustain discharge period in the unselected cells.

The voltage applied to the second column electrode set W 'is not limited to applying a constant voltage, but may be connected between the constant potential and the column electrode via a high resistance.

FIG. 3 is a view for explaining Embodiment 1 of the present invention. In sustain discharge of a plasma display panel, discharge current waveforms when a constant voltage is applied to a column electrode and when a discharge promoting pulse is applied 6 is a graph of an experimental result showing the following. In the figure, a dotted line shows a discharge current waveform by a conventional driving method in which a constant voltage is applied to all the column electrodes during the sustain discharge period. The solid line indicates the discharge current waveform when the column electrode is divided into two sets, a discharge promoting pulse is applied to one set of column electrodes W, and a constant voltage is applied to the other set of column electrodes W ′. It is. The origin of time is the application time of the sustain discharge pulse.

As shown in the figure, after applying the sustain pulse,
First, a charging current flows to the capacitive load of the panel. When attention is paid to the discharge current that subsequently flows, for example, in the illustrated example, the abundance ratio of the column electrodes W and W ′ is 1: 1 in some of the column electrodes.
It has been found that the peak of the discharge current can be reduced to about 70% by applying the discharge promotion pulse as compared with the conventional driving.

The function of the discharge promoting pulse applied to the column electrode W will be described. FIG. 4 is a diagram for explaining the principle of the present invention, and is a graph of experimental results showing a discharge current waveform when a constant voltage is applied to a column electrode and when a discharge promoting pulse is applied during sustain discharge of a plasma display panel. It is. The discharge current when a discharge promotion pulse is applied to all column electrodes and the discharge current when a constant voltage is applied to all column electrodes are shown. When the discharge promotion pulse is applied, the discharge delay is small, all the cells are discharged uniformly, and a discharge current with a fast peak time flows.

The principle will be described. The sustain discharge generated between the row electrodes forms charged particles, and they exist for a few μs even after the discharge ends, while they attenuate. Sustain discharge occurs,
In a cell having a column electrode W to which a discharge promotion pulse is applied, when the column electrode W is changed to 0 V, space charges remaining in the space move due to a change in an electric field, and a discharge promotion pulse is applied to the column electrode W. Excessive positive charge is accumulated as compared with the case where no charge is applied.

In the subsequent sustain discharge,
The sustain discharge of the conventional example is realized by the discharge between the row electrodes, but by applying the discharge promoting pulse slightly preceding the sustain pulse to the column electrode W, the row electrode which became the cathode in the previous sustain discharge is applied. A discharge occurs between the column electrodes W, and the discharge triggers a sustain discharge between the row electrodes XY, and the sustain discharge is realized as a discharge with a small discharge delay.

At this time, the voltage after the rise of the discharge promotion pulse is set to a value sufficiently smaller than the discharge start voltage between the column electrode W and the row electrode, and the cell in which the wall charge has not been written during the address period, that is, the sustained cell is maintained. No discharge occurs between the column electrode W and the row electrode in a cell in which no discharge is performed. In addition, since the wall charge accumulated after the fall of the discharge promotion pulse is used, the voltage value after the rise of the discharge promotion pulse can be suppressed low, and only the cell that has performed the sustain discharge selectively has the column electrode W. And a discharge between the row electrodes occurs.

On the other hand, in the cell having the column electrode W 'to which the discharge promoting pulse is not applied, the sustain discharge is performed only between the row electrodes XY, so that the sustain discharge has a longer discharge delay than the discharge realized by the discharge promoting pulse. Becomes

As described above, the current flowing through the row electrode XY is a combined current of the discharge current flowing through each of the cell having the column electrode W and the cell having the column electrode W ′. By combining the discharge currents, the discharge current with a reduced current peak is realized as a whole.

The effect of reducing the discharge current peak is more remarkable as the discharge delay of the sustain discharge of the cell to which the discharge acceleration pulse is not applied is larger. Therefore, in order to make full use of the above effect, the voltage value of the sustain pulse must be reduced. It is desirable to use a low voltage as long as it is equal to or higher than the minimum sustain voltage, or to set the drive frequency of the sustain pulse to a low frequency as long as it does not hinder driving.

FIG. 5 is a diagram for explaining the principle of the present invention, and is a graph of an experimental result for explaining the accumulation of charged particles in the column electrodes during the sustain discharge of the plasma display panel. FIG. 4 is a diagram showing movements of mobile charges q _Y and q _W on a row electrode and a column electrode in a plurality of cells. As can be seen from FIG.
The sustain discharge ends within μs, and the charge on the column electrode moves significantly for 4 μs from the rise of the sustain pulse.
Therefore, in order to sufficiently store the charge, it is desirable that the fall of the discharge promoting pulse falls immediately after the end of the sustain discharge.

Generally, the end of the sustain discharge depends on the voltage value and frequency of the sustain pulse. However, at the sustain pulse frequency (about 100 kHz) used in the conventional PDP, the fall time of the discharge promoting pulse depends on the sustain pulse. It is sufficient that the discharge time is 1 μs from the rising edge, except for the fact that at the start of the sustain discharge, the discharge delay of the sustain discharge becomes large due to the shortage of discharge spark particles, so that the discharge is performed at the first time of the sustain discharge. When the acceleration pulse is applied, it is desirable to make the time from the initial application of the sustain pulse to the fall of the discharge acceleration pulse sufficiently long.

In addition, the rise of the discharge promoting pulse is subject to the following restrictions because the discharge delay of the sustain discharge needs to be sufficiently reduced. It is necessary that the discharge between the column electrode W and the row electrode caused by the rise of the discharge acceleration pulse occurs sufficiently prior to the sustain discharge. On the other hand, an excessively fast discharge between the column electrode W and the row electrode causes the transfer of electric charge between the column electrode W and the row electrode, thereby reducing the wall charge on the row electrode required for the sustain discharge. Therefore, it is necessary to generate seed particles sufficient to promote discharge and to generate a sustain discharge within a range in which unnecessary movement of wall charges does not occur.
It is desirable to apply the discharge acceleration pulse ahead of 200 ns.

Second Embodiment FIG. 6 is a voltage waveform (timing chart) showing a part of a sustain discharge period in a method of driving a plasma display panel according to a second embodiment of the present invention. In the figure, voltage waveforms are voltage waveforms applied to a row electrode X, a row electrode Y, a first column electrode set W, and a second column electrode set W ′ in order from the top. The figure shows a part of the sustain discharge period. The discharge promoting pulse shown in the first embodiment is alternately applied to the first pair of column electrodes W during the period I and to the second pair of column electrodes W ′ during the period II every sustain pulse. You. When viewed throughout the sustain discharge period,
The number of sustain pulses during the period in which the discharge promoting pulse is applied is set to be the same for the two sets of column electrodes W and W ′.

The reason will be described. The cell to which the discharge promoting pulse is applied has a higher light emission luminance than the cell to which the discharge promoting pulse is not applied because the discharge between the column electrode W and the row electrode is applied in the sustain discharge. For this reason, when the discharge promotion pulse is applied to only one of the column electrodes, the display luminance becomes uneven. Therefore, by dispersing the column electrodes to which the pulse is applied with time, it is possible to prevent uneven display luminance.

Embodiment 3 FIG. 7 shows a voltage waveform (timing chart) in a sustain discharge period showing a driving method of a plasma display panel according to Embodiment 3 of the present invention.
In the figure, the voltage waveform is a voltage waveform applied to the row electrode X, the row electrode Y, the first column electrode set W, and the second column electrode set W ′ in order from the top. The figure shows a part of the sustain discharge period. The discharge promoting pulse shown in the first embodiment is alternately applied to the first pair of column electrodes W in the period I and to the second pair of column electrodes W ′ in the period II every two periods of the sustain pulse. You. When viewed through the sustain discharge period, the number of sustain pulses in the period in which the discharge promoting pulse is applied is set to be the same for the two sets of column electrodes W and W ′.

In this embodiment, the sustain pulse period of 2
Although time control of application of the discharge promotion pulse is performed in units of times, during the sustain discharge period in a single subfield, the discharge promotion pulse is applied in units of the sustain pulse period, and the sustaining pulse is applied. If the number of pulses is the same in all cells, the discharge promotion pulse application period may be arranged in any manner. For example, the effects of the present invention can be obtained also in the voltage waveform in the sustain period as shown in FIG.

[0038]

According to the plasma display panel of the first configuration of the present invention, a plurality of pairs of a first electrode and a second electrode which are covered with a dielectric and are arranged in parallel in close proximity to each other; A plurality of third electrodes arranged so as to form cells at right angles to the first electrode and the second electrode, and a gas discharge excitation between the first electrode and the second electrode. In a plasma display panel for performing display, a plurality of pulse trains having the same polarity are alternately applied to the first electrode and the second electrode, and during a period in which a display discharge or an erasing discharge is performed, a certain set of the third electrode is applied. The electrode rises prior to the pulse applied to the first or second electrode;
Since the pulse that falls immediately after the end of the discharge generated by the pulse applied to the first or second electrode is applied, the peak value of the discharge current can be suppressed, and the load on the drive circuit can be reduced. And a plasma display panel with few display defects can be obtained.

According to the plasma display panel of the second configuration of the present invention, the method of selecting the third set of electrodes to which the pulse is applied in the plasma display panel of the first configuration is described. A plurality of different sets of third electrodes are selected for each time in units of a cycle of a pulse for performing a display discharge alternately applied to the first or second electrode, and each of the sets is selected within a unit period for expressing a gray scale. Since the number of pulses for performing the display discharge included in the selected period of the third set of electrodes is made uniform in all cells, light emission in each subfield of all selected cells is suppressed while suppressing the peak value of the discharge current. It is possible to minimize variations in brightness, reduce the load on the drive circuit, and achieve a plasma display panel with less display defects and no uneven brightness. It is.

According to the plasma display panel driving method of the third configuration of the present invention, the plasma display panel is covered with a dielectric,
A plurality of pairs of a first electrode and a second electrode arranged in close proximity and in parallel, and a plurality of third electrodes arranged so as to form a cell orthogonal to the first electrode and the second electrode. And a plurality of pulse trains having the same polarity alternately applied to the first electrode and the second electrode, wherein the pulse is alternately applied to the first electrode and the second electrode. During a period in which a display discharge or an erase discharge is performed, a certain set of the third electrodes rises prior to a pulse applied to the first or second electrode, and Alternatively, since a pulse that falls immediately after the end of the discharge generated by the pulse applied to the second electrode is applied, the peak value of the discharge current can be suppressed, and the load on the drive circuit can be reduced. , And few display defects Plasma display panel can be obtained.

According to the plasma display panel driving method of the fourth configuration of the present invention, in the plasma display panel driving method of the third configuration, the third electrode set to which the pulse is applied is used. With respect to the selection method, a plurality of different sets of third electrodes are selected for each time in units of a cycle of a pulse for performing a display discharge alternately applied to the first or second electrode to express a gray scale. In the unit period, the number of pulses for performing the display discharge included in the selected period of each set of the third electrodes is made uniform in all the cells, so that all the selected cells can be controlled while suppressing the peak value of the discharge current. The variation of the light emission luminance in each subfield can be minimized, the load on the drive circuit can be reduced, and the plasma with few display defects and no luminance unevenness Spray panel can be obtained.

[Brief description of the drawings]

FIG. 1 is a diagram showing a cross section of a cell of a surface discharge AC type plasma display panel to which a method of driving a plasma display panel according to an embodiment of the present invention is applied.

FIG. 2 is a voltage waveform (timing chart) showing a part of a sustain discharge period in the method of driving a plasma display panel according to the first embodiment of the present invention.

FIG. 3 is a diagram illustrating the operation of the present invention.

FIG. 4 is a diagram illustrating the principle of the present invention.

FIG. 5 is a diagram illustrating the principle of the present invention.

FIG. 6 is a voltage waveform (timing chart) showing a part of a sustain discharge period in the method of driving a plasma display panel according to the second embodiment of the present invention.

FIG. 7 is a voltage waveform (timing chart) showing a part of a sustain discharge period in a method of driving a plasma display panel according to Embodiment 3 of the present invention.

FIG. 8 is a voltage waveform (timing chart) showing a part of a sustain discharge period in a method of driving a plasma display panel according to Embodiment 3 of the present invention.

FIG. 9 is a partial perspective view showing a conventional surface discharge type plasma display panel.

FIG. 10 is a configuration diagram of one frame when performing a gradation display method of a conventional plasma display panel.

FIG. 11 is a voltage waveform (timing chart) showing a driving method in one subfield of a conventional plasma display panel.

[Description of Signs] 1 Cell of plasma display panel, 2 Front glass substrate, 3 Back glass substrate, 4 First row electrode X electrode), 5 Second row electrode (Y electrode), 6 Dielectric layer, 7
MgO (magnesium oxide), 8 columns electrodes (W electrodes), 9 phosphor layer, 10 partition wall, 100 the plasma display panel, P _p priming pulse (entire surface write pulse), P _a address pulse, P _Sa scan pulse, PS sustain pulse , P _ac discharge acceleration pulse.

Claims (4)

[Claims] A plurality of pairs of a first electrode and a second electrode which are covered with a dielectric material and are disposed in parallel and close to each other;
A plurality of third electrodes arranged so as to form a cell at right angles to the first electrode and the second electrode, and display is performed by gas discharge excitation between the first electrode and the second electrode. In the plasma display panel, a plurality of pulse trains having the same polarity are alternately applied to the first electrode and the second electrode,
During a period in which a display discharge or an erasing discharge is performed, a certain set of the third electrodes rises prior to a pulse applied to the first or second electrode, and the first or second A plasma display panel, wherein a pulse that falls immediately after the end of discharge generated by a pulse applied to an electrode is applied. 2. The method according to claim 1, wherein the display discharge applied to the first or second electrode is alternately applied to the first or second electrode. A plurality of different third electrode sets are selected for each time in units of the period of the pulse to be performed, and are included in the selected period of each of the third electrode sets within the unit period for expressing the gradation. A plasma display panel wherein the number of pulses for performing the display discharge is made uniform in all cells. 3. A plurality of pairs of a first electrode and a second electrode, which are covered with a dielectric and are arranged in close proximity and parallel to each other,
A plurality of third electrodes arranged so as to form a cell at right angles to the first electrode and the second electrode, and display is performed by gas discharge excitation between the first electrode and the second electrode. In the plasma display panel, a plurality of pulse trains having the same polarity are alternately applied to the first electrode and the second electrode,
During a period in which a display discharge or an erasing discharge is performed, a certain set of the third electrodes rises prior to a pulse applied to the first or second electrode, and the first or second A method for driving a plasma display panel, comprising applying a pulse that falls immediately after the end of discharge generated by a pulse applied to an electrode. 4. The method of selecting a third set of electrodes to which the pulse is applied in the method of driving a plasma display panel according to claim 3 is applied alternately to the first or second electrode. A plurality of different third electrode sets are selected for each time in units of a pulse period for performing a display discharge, and each of the third electrode sets is selected in a unit period for expressing gradation. Wherein the number of pulses for performing the display discharge is uniform in all cells.