JP2000206933A - Driving method for ac discharge type plasma display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable an AC discharge type plasma display panel to obtain a sufficient luminance by enabling the device to secure a long sustaing period even when a scanning pulse width is narrowed and the number of scanning lines is increased. SOLUTION: A converting period 4 making discharges generate in accordance with a wall charge quantity is provided between a scanning period 3 and a sustaining period 5 and the lighting and the non-lighting of a pixel are made to be changed over by the presence or absence of the occurence of discharges in the converting period, Thus, potential differences of writing discharge places can be made higher and, as a result, a scanning pulse width can be narrowed to the extent of the half of that in the conventional practice. Consequently, the time of the sustaining period can be made longer by that amount and the luminance of the plasma display panel is enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for driving an AC discharge type plasma display panel used for large-screen display.

[0002]

2. Description of the Related Art Generally, a plasma display panel (PDP) has many features such as being thin and capable of relatively easily displaying a large screen, having a wide viewing angle, and having a high response speed. For this reason, in recent years, it has been used as a flat display, such as a wall-mounted television or a public display board. The plasma display panel is operated in a DC discharge state (DC type) in which the electrodes are exposed to a discharge space (discharge gas) and operated in a DC discharge state depending on the operation method.
And an AC discharge type (AC) in which an electrode is covered with a dielectric layer and is not directly exposed to a discharge gas, and is operated in an AC discharge state.
Type).

[0003] Among them, a DC discharge type plasma display panel generates a discharge while a voltage is applied, and an AC discharge type plasma display panel sustains the discharge by inverting the polarity of the voltage. Further, there are AC discharge type plasma display panels in which the number of electrodes in one cell is two or three. Here, the structure and driving method of a conventional three-electrode AC discharge type plasma display panel will be described. FIG. 6 is a cross-sectional view of a cell showing such a conventional AC discharge type plasma display panel, in which the front substrate 20 and the rear substrate 21 which are the substrates facing each other, and the front substrate 20 and the rear substrate 21 respectively. It has a plurality of arranged scanning electrodes 22, common electrode 23 and data electrode 29, and forms a display cell in which these scanning electrode 22, common electrode 23 and data electrode 29 are arranged in a matrix at each intersection. ing.

Further, a glass substrate or the like is used as the front substrate 20, and the scanning electrodes 22 and the common electrodes 23 are provided at predetermined intervals so as to extend in the depth direction of the paper. The scanning electrode 22 and the common electrode 23
On top of this, a transparent dielectric layer 24 and a protective layer 25 made of MgO or the like for protecting the transparent dielectric layer 24 from discharge are formed so as to overlap. On the other hand, a glass substrate or the like is used as the back substrate 21, and the data electrodes 29 are provided so as to be orthogonal to the scanning electrodes 22 and the common electrodes 23.
Further, a white dielectric layer 28 and a phosphor layer 27 are provided on the data electrode 29 so as to sequentially overlap each other. A plurality of partition walls (not shown) are formed at a predetermined interval between the two glass substrates in parallel with the paper surface. These partitions serve to secure the discharge space 26 and to separate the pixels. A mixed gas of He, Ne, Xe, or the like is sealed in the discharge space 26 as a discharge gas.

A document describing such a structure is described in Society for Information Display 98 Digest, pp. 279-281, 1
May 998 (SID 98 DIGEST, p. 279)
-281, May, 1998). FIG.
1 shows a plan view of an electrode AC discharge type plasma display panel. Si of the scanning electrode 22 and Ci of the common electrode 23
(I = 1 to m) and Dj of the data electrode 29 (j = 1 to
A display cell 31 is formed at each intersection with n), and these are arranged in a matrix.

Next, a method of driving the three-electrode AC discharge type plasma display panel will be described. Here, a description will be given of a driving method based on a scan maintenance separation system (ADS system) in which a scanning period and a maintenance period, which are currently mainstream, are separated. FIG. 5 shows a driving waveform diagram of one subfield 1 (hereinafter abbreviated as SF) of the three-electrode AC discharge type plasma display panel. One subfield 1 is composed of three periods: a preliminary discharge period 2, a scan period 3, and a sustain period 5.

First, in the preliminary discharge period 2, a preliminary discharge pulse 14 is applied to the common electrodes 23 of C1 to Cn. This resets and initializes the difference in the state of wall charge formation at the last point in the last SF light emission state, and at the same time, forcibly discharges all pixels as cells, that is, puts all cells into an erased state, A priming effect for causing a subsequent write discharge at a low voltage can be realized. Therefore, the pre-discharge pulse 14 must discharge a higher voltage than a scan pulse and a sustain pulse, which will be described later, in order to discharge all the pixels. FIG. 5 shows the case where the preliminary discharge pulse 14 is one time. However, the sustain erase pulse for resetting the state of the previous SF is applied to the scan electrodes S1 to Sn.
And then apply a priming pulse that causes a priming effect to discharge all pixels.
In some cases, the pulse is applied while separating the two roles. At this time, the sustain erasing pulse is not limited to one time, and a different pulse may be applied plural times.

The priming effect is not always required for each SF, but there is also a driving method in which a priming pulse is applied only once for several SFs. Since the priming pulse causes all pixels to emit light regardless of display, the luminance during black display can be suppressed by reducing the number of times the priming pulse is applied. When using the preliminary discharge pulse 14 as shown in FIG.
In order to perform the priming operation for forcibly discharging all the pixels once every several SFs, the level of the pre-discharge pulse 14 may be lowered to perform only the role of reset. At this time, a different pulse can be applied a plurality of times instead of the preliminary discharge pulse 14 in order to surely perform the reset.

Next, a preliminary discharge erasing pulse 15 is applied. Thereby, the wall charges on the dielectric formed by the preliminary discharge are erased or controlled to an appropriate amount.
FIG. 5 shows the case where the pre-discharge erase pulse 15 is one time. However, the role of the scanning pulse and the sustain pulse is ensured, the in-plane variation of the light emission of all pixels is suppressed, and the influence of the display load fluctuation is obtained. In some cases, a plurality of pulses may be applied or other electrodes may be applied.

Next, in the scanning period 3, the scanning pulse 9 is sequentially applied to the scanning electrodes 22 of S1 to Sm. The data pulse 10 is applied to the data electrodes 29 of D1 to Dn in accordance with the display pattern in accordance with the scanning pulse 9. In the pixel to which the data pulse 10 is applied, a high voltage is applied between the scan electrode 22 and the data electrode 29, so that a write discharge occurs, and a large positive wall charge is formed on the scan electrode 22 side. Negative wall charges are formed on the data electrode 29 side. On the other hand, in a pixel to which the data pulse 10 is not applied,
Since the applied voltage is low, no discharge occurs and the state of the wall charge does not change. In this way, two types of wall charges can be created depending on the presence or absence of the data pulse 10.
Note that the hatching of the data pulse 10 means that the presence or absence of the data pulse 10 changes depending on the display data.

When the scanning pulse 9 has been applied to all the scanning electrodes 22 of S1 to Sn, the operation proceeds to the sustain period 5. In the sustain period 5, the sustain pulse 11 is applied to all the scan electrodes 22 of S1 to Sn.
And all the common electrodes 23 of C1 to Cn.
The voltage value of each sustain pulse 11 is set to a voltage at which discharge does not start with its own voltage. Therefore, since the wall charge is small in the pixel where no write discharge has occurred, no discharge occurs even if the sustain pulse is applied. On the other hand, in the pixel in which the write discharge has occurred, since a large positive wall charge exists on the scan electrode 22 side, the first positive sustain pulse applied to the scan electrode 22 (hereinafter, referred to as a first sustain pulse) includes:
The positive wall charges are superimposed, a voltage higher than the discharge starting voltage is applied to the discharge space, and a sustain discharge occurs. Due to this discharge, negative wall charges are accumulated on the scan electrode 22 side, and positive wall charges are accumulated on the common electrode 23 side. The next sustain pulse (hereinafter, referred to as a second sustain pulse) is applied to the common electrode 23 side, and the above-mentioned wall charges are superimposed, so that a sustain discharge is also generated here, and has a polarity opposite to the first sustain pulse. Wall charges are accumulated on the scan electrode 22 side and the common electrode 23 side.
Thereafter, the discharge is continuously generated according to the same principle.

That is, the potential difference due to the wall charges generated by the x-th sustain discharge is superimposed on the (x + 1) -th sustain pulse, so that the sustain discharge is maintained. The amount of light emission is determined by the number of times of sustain discharge. The sustain erasing period 2, the scanning period 3, and the sustain period 5 are collectively referred to as a subfield as described above, and one field which is a period for displaying image information of one screen is composed of the plurality of subfeeds. . The gradation display can be performed by changing the number of sustain pulses in each subfield and lighting or not lighting each subfield.

[0013]

However, in such a conventional method of driving a plasma display panel by the scan maintaining / separating method, the number of scanning pulses increases due to an increase in the number of scanning lines when applied to a high definition panel. If the period of one subfield 1 and the preliminary discharge period 2 are fixed, the sustain period 5 must be shortened accordingly, and as a result, the light emission period becomes longer. There has been a problem that the display screen becomes short and the luminance of the display screen decreases.

The present invention has been made to solve the above-mentioned problems, and an AC discharge type plasma display panel capable of securing a sufficiently long maintenance period even with an increase in scanning lines and thereby obtaining sufficient luminance. It is an object of the present invention to provide a driving method.

[0015]

In order to solve the above-mentioned problems, the present invention has proposed a driving method capable of performing a write discharge with a short scanning pulse width. That is, by increasing the voltage applied to the discharge location when applying a scan pulse for generating a write discharge in a line-sequential manner, the discharge period is shortened. Thereby, the scanning pulse width can be shortened.
Further, as a conversion period after the end of the scanning period, a period in which a discharge is generated in accordance with the amount of wall charges formed by writing is provided, and by setting the amount of wall charges to an appropriate amount, a case where a sustain discharge occurs, Lighting and non-lighting are distinguished when they do not occur.

According to another aspect of the present invention, there is provided a method of driving an AC discharge type plasma display panel, comprising the steps of: displaying a display signal on a dielectric layer on a plurality of electrodes forming pixels arranged in a matrix; A scan pulse for performing a write discharge for forming wall charges based on the scan pulse and a data pulse are sequentially applied to the respective electrodes; and the pixels are turned on based on the wall charges formed during the scan period. In a method for driving an AC discharge type plasma display panel having a sustain period for performing a sustain discharge for causing
The amount of wall charge formed by the write discharge is made different depending on the display signal, and a conversion period is provided between the scanning period and the sustain period to generate a discharge in accordance with the amount of wall charge. The method is characterized in that the pixel is switched between lighting and non-lighting depending on whether the pixel is generated or not. Preferably, the write discharge is generated in both a lit pixel and a non-lit pixel. As a result, the potential difference at the write discharge location becomes higher, the write discharge period can be shortened, and the scan pulse width can be reduced.

In addition, when the scanning pulse is applied, the potential difference between the respective electrodes that generate the write discharge is larger in the non-lighted pixel than in the lighted pixel, and during the conversion period,
The drive waveform can be simplified by preventing the non-lighting pixel from generating a discharge and the lighting pixel from generating a discharge at the same place as the writing discharge. Further, in the conversion period, by eliminating the potential difference between the electrodes at which discharge occurs during the conversion period, the wall charge of the non-lighted pixel can be made zero, and the pixel that does not generate the discharge during the sustain period Can take a large margin.

Preferably, a pulse having a polarity opposite to a potential difference generated between the row electrode and the column electrode by the scan pulse and the data pulse is applied to the row electrode and the column electrode, thereby generating the write discharge. A preliminary discharge having a polarity opposite to that of the write discharge is generated between the row electrode and the column electrode immediately before the scanning period, so that a wall charge having a polarity opposite to a wall charge formed at the time of the write discharge is generated. Can be formed.
Thereby, a higher voltage can be applied at the time of writing discharge, and the scanning pulse width can be further reduced.

Further, preferably, before the scanning pulse is applied to the row electrode to which the scanning pulse is applied, the scanning pulse has the same polarity as the scanning pulse and an absolute value smaller than the scanning pulse or the scanning pulse is applied. A second scanning bias voltage having an absolute value greater than the first scanning bias voltage after application of the scanning pulse, and an absolute value smaller than the scanning pulse voltage after the application of the scanning pulse. Erroneous discharge during the scanning period can be suppressed. Preferably, the scan electrode is divided into a plurality of scan line groups, and the timing of shifting from the scan period to the conversion period is different for each scan line group, thereby suppressing the peak current in the conversion period. Can be.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIG. FIG. 1 shows a driving waveform of a three-electrode AC discharge type plasma display using the scan sustaining separation method. The structure and cell structure of this three-electrode AC discharge type plasma display panel are the same as those shown in FIGS. First, in the preliminary discharge period 2, the sustain erasing pulse 6 is applied to the scan electrode 22. The sustain erasure pulse 6 is a positive round waveform that gradually increases the voltage. In addition, a triangular wave that linearly increases the voltage can be applied instead. The final voltage value of the sustain erase pulse 6 is, for example, 160 to 180V.
Next, the first wall charge forming pulse 7a is applied to the scan electrode 22, and thereafter, the second wall charge forming pulse 7b is applied. At this time, the first common bias pulse 8a and the second common bias pulse 8b are applied to the common electrode 23 at the same timing. Here, for example, the first voltage forming pulse 7a is −18.
0 V to -200 V, and the second voltage forming pulse 7b
Is about 100 V to 120 V, the first common bias pulse 8 a is −80 to −110 V, and the second common bias pulse 8 b is 80 to 110 V.

In the scanning period 3, the scanning electrode 2
2, a scanning bias pulse 12 of about 50 to 90 V is applied during the scanning period 3. The scanning pulse 9 is 170 V to 190
V, which are sequentially applied to S1 to Sn of the scanning electrode 22. The width of the scanning pulse 9 is set to 1.2 to 1.5 μsec. A data pulse 10 corresponding to a video signal is applied in synchronization with the scanning pulse 9. The potential of the data pulse is 80 to 90V. After all the scanning pulses 9 have been applied, the process proceeds to the conversion period 4. In the conversion period 4, all electrode potentials are equalized. Here, it is set to 0V. Further, in the sustain period 5, the sustain pulse (first sustain pulse) 11 at the beginning of the sustain period 5 is applied to the scan electrode 22, and the last sustain pulse (final sustain pulse) 11 is applied to the common electrode 23.
The voltage of the sustain pulse is set to 160V to 180V. Also,
During the sustain period 5, the data bias pulse 13 having a voltage of １ ／ of the sustain pulse 11 is applied to the data electrode 29.

Next, the operation will be described. First, the preliminary discharge period 2 will be described. When the previous SF is not lit, no discharge occurs after the wall charge becomes zero in the conversion period 4 of the previous SF, so the wall charge is also zero immediately before the application of the sustain erase pulse 6. . Therefore,
No discharge occurs when the sustain erasure pulse 6 is applied. on the other hand,
If the previous SF was lit, when the last sustain pulse was applied,
Since a positive wall charge is formed on the scan electrode 22 and a negative wall charge is formed on the common electrode 23, a weak discharge is generated as the voltage is increased by the application of the sustaining erase pulse 6, and the scan electrode 22 is gradually reduced.
And the wall charges on the common electrode 23 become smaller, and the wall charges become zero at the end of the pulse.

Subsequently, a counter discharge is generated between the scan electrode 22 and the data electrode 29 by applying the first wall charge forming pulse 7a. At this time, since the first common bias pulse 8a is applied to the common electrode 23, the scan electrode 22
No surface discharge occurs between the common electrode 23 and the common electrode 23. As a result, positive wall charges are formed on the scan electrodes 22, and negative wall charges are formed on the data electrodes 29. Further, the second wall charge forming pulse 7b is applied to the scan electrode 22, and the wall charges having the opposite polarity to the first wall charge forming pulse 7a and having a small charge amount are formed.

Next, the operation proceeds to the scanning period 3. Scan period 3
The scanning pulse 9 is applied to the scanning electrodes 22 of S1 to Sn line-sequentially in the same manner as in the prior art. At this time, since a negative wall charge is formed on the scan electrode 22 and a positive wall charge is formed on the data electrode 29, a voltage higher than the applied pulse voltage is applied to the discharge space 26. At this time, a counter discharge is generated between the scan electrode 22 and the data electrode 29 irrespective of the presence or absence of the data pulse 10 to the data electrode 29. Moreover, since the wall charge voltage is superimposed and the write discharge is generated at a high voltage, the formation delay time from the application of the pulse to the generation of the discharge can be shortened, and the pulse width is set to 1.2 to 1. It can be set to 5 μsec. The amount of wall charges generated by the discharge depends on the presence or absence of the data pulse 10, and by applying the data pulse 10,
Larger wall charges are formed. In the driving method according to the present invention, the data pulse is applied to the non-lighted pixels, and is not applied to the lighted pixels. The formed wall charge is the scanning electrode 2
2 is positive, and the data electrode 29 is negative. Further, the scanning bias pulse 12 is provided so that a counter discharge is not generated by the formed wall charges.

After the end of the scanning period 3, the process proceeds to the conversion period 4. In the conversion period 4, all electrode potentials are set to zero. In the case of a non-lighted pixel, the data pulse 10
Is applied and a large wall charge is formed, so that a counter discharge occurs in the conversion period 4 and the wall charge disappears.
As a result, even if the sustain pulse 11 is applied in the sustain period 5, no sustain discharge occurs and the light is not turned on. On the other hand, in the case of the lighting pixel, since the data pulse 10 is not applied at the time of the write discharge, the amount of wall charges formed is small, and no discharge occurs in the conversion period 4. Therefore, the wall charges formed during the write discharge remain as they are, and a sustain discharge is generated by the sustain pulse 11 of the sustain period 5 to light up. In the sustain period 5, by applying the data bias pulse 13,
The potential of the data electrode 29 is positioned in the middle of the sustain pulse 11, and the data electrode 29 is moved by the movement of charged particles by an electric field.
The upper wall charge can be made zero.

As described above, conventionally, 2.5 to 3 μsec
In the present invention, the required scanning pulse width is changed from 1.2 to 1.
It can be halved to 5 μsec. As a result, even if the number of scanning lines is twice as large as that in the related art, the time of the scanning period 3 is the same, and the sustaining period 5 does not need to be reduced, and the luminance does not decrease.

Next, a second embodiment of the present invention will be described with reference to FIG. The panel structure and the cell structure are the same as in the first embodiment. Here, it is the same as the first embodiment except that the scanning bias pulse 12 in the scanning period 3 is different before and after the application of the scanning pulse 9. Before the application of the scanning pulse 9, negative wall charges are formed on the scanning electrode 22, and after the application, positive wall charges are formed. Therefore, by changing the voltage of the first scanning bias pulse 12a and the voltage of the second scanning bias pulse 12b, erroneous discharge hardly occurs in either case.
Here, the first scanning bias pulse 12a is set to, for example, -20.
V, and the second scanning bias pulse 12b is set to -80, for example.
V. This can be applied not only to this embodiment but also to other embodiments of the present invention.

A third embodiment of the present invention will be described with reference to FIG. The panel structure and the cell structure are the same as in the first embodiment. Here, the sustain pulse 11 of the sustain period 5 is, for example, a bipolar pulse of +80 V and -80 V, the data bias pulse 13 is eliminated, and the data electrode 2
9 is the same as the first embodiment except that the potential is zero.

A fourth embodiment of the present invention will be described in detail with reference to FIG. The panel structure and the cell structure are the same as in the first embodiment. In FIG. 4, a scanning period 3, a conversion period 4, and a sustain period 5 are the same as those in the first embodiment. In the first embodiment, the preliminary discharge period 2
The first common bias pulse 8a is eliminated, and the data bias pulse 14 having the same voltage as the data pulse is applied to the data electrode 29 at the same timing. Other pulses are the same as in the first embodiment. As a result, the voltage applied to the common electrode 23 can be made only positive.

In the above embodiments, the conversion period 4
Is the same for all the scanning electrodes 22. However, at the same timing, a large amount of current flows in the entire panel at that timing. Although not shown, the scan electrode 22 is divided into several groups (groups of scan lines), and the timing of transition to the conversion period 4 is shifted by several μsec to suppress the peak current value. it can.

[0031]

As described above, according to the present invention, a conversion period for generating a discharge in accordance with the wall charge amount is provided between the scanning period and the sustain period, and the conversion period is determined by whether or not a discharge is generated during the conversion period. Since the switching between the lighting and non-lighting of the pixel is performed, the potential difference at the write discharge location can be further increased, whereby the scan pulse width can be reduced to about 1/2 of the conventional one, and 1SF The time of the middle scanning period can be reduced. As a result, the duration of the sustain period can be lengthened accordingly, and the luminance can be increased. In addition, although the number of scanning lines is about 480 in the related art, even if the number is about the same as that of an HDTV, the driving can be performed without shortening the sustain period, and the driving can be performed without lowering the luminance.

[Brief description of the drawings]

FIG. 1 is a waveform diagram showing a driving waveform of one subfield according to a first embodiment of the present invention.

FIG. 2 is a waveform diagram showing a driving waveform of one subfield according to a second embodiment of the present invention.

FIG. 3 is a waveform diagram showing a driving waveform of one subfield according to a third embodiment of the present invention.

FIG. 4 is a waveform chart showing driving waveforms of one subfield according to a fourth embodiment of the present invention.

FIG. 5 is a waveform diagram showing a driving waveform of one subfield in a conventional three-electrode AC discharge type plasma display panel.

FIG. 6 is a cross-sectional view showing a cell structure of a conventional three-electrode AC discharge type plasma display panel.

FIG. 7 is a plan view showing an electrode arrangement of a conventional three-electrode AC discharge type plasma display panel.

[Explanation of symbols]

 2 Pre-discharge period 3 Scan period 4 Conversion period 5 Sustain period 6 Sustain erase pulse 9 Scan pulse 10 Data pulse 12 Scan bias pulse 20 Front substrate (substrate) 21 Back substrate (substrate) 22 Scan electrode (row electrode) 23 Common electrode ( Row electrode) 29 data electrode (column electrode)

Claims (12)

[Claims] A scanning pulse and a data pulse for performing a writing discharge for forming wall charges based on a display signal on a dielectric layer on a plurality of electrodes forming pixels arranged in a matrix; A method for driving an AC discharge type plasma display panel, comprising: a scanning period to be sequentially applied to each of the electrodes; and a sustaining period for performing a sustaining discharge for lighting the pixel based on the wall charges formed in the scanning period. A conversion period for generating a discharge in accordance with the wall charge amount is provided between the scanning period and the sustain period, wherein a conversion period is provided between the scanning period and the sustain period. Depending on the occurrence of discharge,
A method of driving an AC discharge type plasma display panel, characterized by switching between lighting and non-lighting of the pixel. 2. The driving method for an AC discharge type plasma display panel according to claim 1, wherein the write discharge occurs in both a lit pixel and a non-lit pixel. 3. The non-lighted pixel has a larger potential difference between a non-lighted pixel and a lighted pixel than a lighted pixel, wherein the potential difference between the electrodes that generates the write discharge when the scanning pulse is applied.
3. The method for driving an AC discharge type plasma display panel according to item 1. 4. The AC discharge type plasma display according to claim 1, wherein in the conversion period, a non-lighted pixel generates a discharge and a lighted pixel does not generate a discharge. Panel driving method. 5. The AC discharge type plasma display according to claim 1, wherein the discharge generated during the conversion period is generated between the same electrodes as the place where the write discharge has occurred. Panel driving method. 6. The method of driving an AC discharge type plasma display panel according to claim 1, wherein in the conversion period, there is no potential difference between electrodes at which discharge occurs during the conversion period. 7. A plurality of row electrodes are arranged on one of two substrates, and a column electrode is arranged on the other substrate so as to be orthogonal to the row electrodes. The AC discharge type plasma display panel according to any one of claims 1 to 6, wherein a scan pulse is applied to the row electrodes and a data pulse is applied to the column electrodes so as to occur between. Drive method. 8. The row electrodes are composed of two types, a scan electrode for applying the scan pulse and a common electrode for performing the sustain discharge between the scan electrodes during the sustain period, and are arranged in a matrix. The AC according to any one of claims 1 to 7, wherein the pixel is a three-electrode type plasma display panel including the scanning electrode, the pixel electrode, and the data electrode serving as the column electrode. A method for driving a discharge type plasma display panel. 9. A preliminary discharge having a polarity opposite to that of the write discharge is generated immediately before the scanning period between the row electrode and the column electrode where the write discharge occurs. 9. The method for driving an AC discharge type plasma display panel according to any one of 1 to 8. 10. The preliminary discharge is generated by applying a pulse having a polarity opposite to a potential difference generated between the row electrode and the column electrode by the scan pulse and the data pulse to the row electrode and the column electrode. The method for driving an AC discharge type plasma display panel according to claim 9, wherein: 11. The scan electrode according to claim 1, wherein the scan electrode is applied to the row electrode before the scan pulse is applied during the scan period, and has the same polarity as the scan pulse and an absolute value smaller than the scan pulse or a polarity opposite to the scan pulse. And applying a second scanning bias voltage having an absolute value larger than the first scanning bias voltage and a smaller absolute value than the scanning pulse voltage after applying the scanning pulse. The method for driving an AC discharge type plasma display according to any one of claims 1 to 10, wherein: 12. The scanning line group according to claim 1, wherein the scanning electrodes are divided into a plurality of scanning line groups, and a timing of transition from the scanning period to the conversion period is different for each scanning line group. A driving method for an AC discharge type plasma display according to any one of the above.