KR100332058B1 - Method Of Driving Plasma Display Panel In High Speed And Apparatus Thereof - Google Patents

Abstract

The present invention relates to a high speed driving method and apparatus for making a plasma display panel suitable for high speed driving.

The present invention applies the same voltage to the auxiliary discharge cell positioned between two adjacent scan lines and the previous scan line included in the two scan lines, thereby scanning the previous scan line and simultaneously discharging the auxiliary discharge cell to generate the next scan. The space charge required for the line is generated in the auxiliary discharge cell, and a scan pulse for supplying the next scan line is supplied. The space discharge generated in the auxiliary discharge cell and the scan pulse cause an address discharge in the next scan line.

According to the present invention, it is possible to reduce the time required for address discharge by reducing the width of the data pulse and the scan pulse required for the address discharge of the next scan line to 1 μs or less.

Description

Method and device for driving plasma display panel {Method Of Driving Plasma Display Panel In High Speed And Apparatus Thereof}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for driving a plasma display panel, and more particularly, to a high speed driving method and apparatus for making a plasma display panel suitable for high speed driving.

Recently, a plasma display panel (hereinafter referred to as a 'PDP'), which is easy to manufacture a large panel, has attracted attention as a flat panel display device. As a PDP, a three-electrode AC surface discharge type PDP having three electrodes and driven by an alternating voltage is typical.

Referring to FIG. 1, a discharge cell of a three-electrode alternating surface discharge type PDP is formed on a scan / sustain electrode 12Y and a common sustain electrode 12Z formed on an upper substrate 10, and a lower substrate 18. An address electrode 20X is provided. The upper dielectric layer 14 and the passivation layer 16 are stacked on the upper substrate 10 having the scan / sustain electrode 12Y and the common sustain electrode 12Z side by side. In the upper dielectric layer 14, wall charges generated during plasma discharge are accumulated. The protective layer 16 prevents damage to the upper dielectric layer 14 due to sputtering generated during plasma discharge and increases emission efficiency of secondary electrons. As the protective film 16, magnesium oxide (MgO) is usually used. The lower dielectric layer 22 and the partition wall 24 are formed on the lower substrate 18 on which the address electrode 20X is formed, and the phosphor layer 26 is coated on the surfaces of the lower dielectric layer 22 and the partition wall 24. The address electrode 20X is formed in the direction crossing the scan / sustain electrode 12Y and the common sustain electrode 12Z. The partition wall 24 is formed in parallel with the address electrode 20 to prevent the ultraviolet rays and the visible light generated by the discharge from leaking to the adjacent discharge cells. The phosphor layer 26 is excited by ultraviolet rays generated during plasma discharge to generate visible light of any one of red, green, and blue. Inert gas for gas discharge is injected into the discharge space provided between the upper and lower plates and the partition wall.

Referring to FIG. 2, a driving apparatus of a three-electrode alternating surface discharge type PDP includes m / n discharge cells 1 having scan / sustain electrode lines Y1 to Ym, common sustain electrode lines Z1 to Zm, and A PDP 30 arranged in a matrix so as to be connected to the address electrode lines X1 to Xn, a scan / sustain driver 32 for driving the scan / sustain electrode lines Y1 to Ym, and a common sustain; Common sustain driver 34 for driving electrode lines Z1 to Zm, odd-numbered address electrode lines X1, X3, ..., Xn-3, Xn-1 and even-numbered address electrode lines X2. First and second address drivers 36A and 36B for dividing and driving .X4, ..., Xm-2, Xm are provided. The scan / sustain driver 32 sequentially supplies scan pulses and sustain pulses to the scan / sustain electrode lines Y1 to Ym so that the discharge cells 1 are sequentially scanned in line units and m × n. The discharge in each of the four discharge cells 1 is continued. The common sustain driver 34 supplies sustain pulses to all of the common sustain electrode lines Z1 to Zn. The first and second address drivers 36A and 36B supply image data to the address electrode lines X1 through Xm in synchronization with the scan pulse. The first address driver 36A supplies image data to the odd-numbered address electrode lines X1, X3, ..., Xn-3, Xn-1, while the second address driver 36B is the even-numbered address electrode line. Image data is supplied to the fields X2, X4, ..., Xn-2, Xn.

The three-electrode alternating surface discharge type PDP is driven by dividing one frame into several subfields having different emission counts in order to form an image gray level. Each subfield is further divided into a reset period for uniformly generating discharge, an address period for selecting a discharge cell, and a sustain period for implementing gray levels according to the number of discharges. For example, when a picture is to be displayed in 256 gray levels, a frame period (16.67 ms) corresponding to 1/60 second is divided into eight subfields SF1 to SF8. In addition, each of the eight subfields SF1 to SF8 is divided into an address period and a sustain period. Here, the reset period and the address period of each subfield are the same for each subfield, while the sustain period is 2 ⁿ (n = 0,1,2,3,4,5,6,7) in each subfield. Is increased. As described above, since the sustain period is changed in each subfield, gray levels of an image can be realized. As a result, the remaining reset period and the address period except the sustain period can be regarded as auxiliary discharges irrelevant to the actual gray scale implementation. However, since the sustain period is reduced by the time occupied by the reset period and the address period in driving the PDP, there is a problem in that it cannot cope with high resolution properly. For example, in the case of single scan of 480 scan lines, the required address period within one frame is 480 scan lines × 1 scan time × 8 subfields, and if the scan time is 3 μs, a total of 11.52 ms is required. If you include the period, it takes 13ms or more. Therefore, the time that can be allocated to the sustain period within one frame is absolutely short of 16.67ms-13ms. In order to allocate more of these insufficient sustain periods, the injection time should be reduced. If the scan time is reduced to 1 μs, even if 10 subfields are allocated to 1024 scan lines, the address time can be sufficiently reduced to about 10 ms, so that a relatively large amount of time can be devoted to the sustain period.

The driving method of the PDP includes a selective writing method and a selective erasing method which is advantageous in reducing an address period according to whether the discharge cell 1 to which the writing pulse WP is supplied emits light. In both of the selective writing method and the selective erasing method, the factors influencing the discharge are internal elements existing inside the discharge cell by external discharge such as wall charge, space charge and meta-stable particles and applied externally. Voltage. The discharge is generated when the sum of the aforementioned internal element and external applied voltage becomes equal to or greater than the discharge start voltage of the discharge cell. Therefore, when the external applied voltage is the same, it is advantageous that a large amount of wall charge or space charge exist in the discharge cell in order to easily cause discharge.

The selective write method supplies a reset pulse having a very high voltage level in the reset period to all the discharge cells in order to make all the discharge cells 1 the same discharge condition before supplying the data pulse and the scan pulse at the same time. This will cause a reset discharge. At this time, the decay time of the space charge generated in the discharge cells does not exceed 30-40 μs, as experimentally found, and thus does not contribute significantly to the address discharge. Therefore, in the selective write method, the address discharge does not occur uniformly within a short time, and as shown in FIG. 3, it occurs in a long time up to 3 μs at the time of 500 ns from the rising edge of the data pulse and the scan pulse.

In contrast, in the selective erasing method, writing discharge is caused to the discharge cells of all scan lines before generating the address discharge. Therefore, since a large amount of wall charges are accumulated in the discharge cell, address discharge can occur even by a short address pulse. In practice, in the selective erasing method, the data pulse and the scan pulse for generating the address discharge are only 1 mu s as shown in FIG. However, the selective erasing method has a disadvantage in that light emission occurs for the discharge cells of the entire scan lines before the address period of every subfield, so that light emission occurs several times even in the non-display period. This has been pointed out as a cause of suppressing the contrast by increasing the black level of the image.

On the other hand, as a way to reduce the address time in the selective write method without significantly lowering the contrast, as shown in FIG. 5, the wall charge may be accumulated as much as desired in the reset period using a slow ramp waveform. When the slow ramp waveform is applied to the discharge cells, wall charges can be accumulated in the discharge cells by continuously generating minute discharges without causing large discharges involving light emission in the discharge cells. By adjusting the slope of the slow ramp waveform, the wall charges can be arbitrarily adjusted by the amount necessary for the address discharge. However, the method of applying the slow ramp waveform before the address period is difficult to arbitrarily adjust the amount of wall charges, and the reset period is lengthened by the slow ramp waveform.

Accordingly, an object of the present invention is to provide a high speed driving method of a PDP that is suitable for high speed driving by reducing the time required for address discharge.

Another object of the present invention is to provide a PDP and a driving device thereof suitable for high speed driving.

It is still another object of the present invention to provide a PDP and a driving device thereof to prevent contrast inhibition due to discharge occurring in a non-display period.

1 is a perspective view showing a discharge cell structure of a conventional three-electrode AC surface discharge type plasma display panel.

FIG. 2 is a diagram illustrating a plasma display panel in which discharge cells illustrated in FIG. 1 are arranged in a matrix form, and a driving unit thereof;

3 is a waveform diagram showing a data pulse and a scan pulse in a conventional selective writing method.

4 is a waveform diagram illustrating data pulses and scan pulses in a conventional selective erasing scheme.

5 is a waveform diagram illustrating a slow ramp signal applied in a conventional selective writing method.

6 is a plan view showing a plasma display panel according to an embodiment of the present invention.

7 is a driving waveform diagram of a plasma display panel according to an embodiment of the present invention;

8 is a waveform diagram showing in detail the data pulse and the scan pulse shown in FIG.

<Description of Symbols for Main Parts of Drawings>

10: upper substrate 12Y: scanning / sustaining electrode

12Z: common sustain electrode 14,22: dielectric layer

16: protective film 18: lower substrate

20X: address electrode 24: partition wall

26 phosphor 30 PDP

32: scan / sustain driver 34: common sustain driver

36A, 36B: address driver 51: auxiliary discharge cell

52: black matrix

In order to achieve the above objects, the high-speed driving method of the PDP according to the present invention applies the auxiliary discharge cell located between two adjacent scan lines and the previous scan line by applying the same voltage to the previous scan line included in the two scan lines. And generating a discharge in the secondary discharge cell at the same time as generating the secondary discharge cell, supplying a scan pulse for scanning the next scan line, and generating a discharge in the secondary discharge cell. Generating an address discharge in the next scan line using the space charge and the scan pulse. A PDP according to the present invention is located between two adjacent scan lines and is used to scan a previous scan line included in two scan lines. To generate the space charge required for the next scan line and to supply the secondary discharge cell to the next scan line. And. The auxiliary discharge cells are discharged at the same time as the scanning of the previous scan lines by applying a voltage at the time of injection of the previous scan line is characterized in that for generating a space charge.

The high speed driving device of the PDP according to the present invention is an auxiliary discharge cell positioned between the previous scan line and the next scan line, and the auxiliary discharge simultaneously with the scanning of the previous scan line by applying a voltage to the auxiliary discharge cell during the scan of the previous scan line. Secondary discharge cell driving means for discharging the cells to generate the space charges required for the next scan line at the time of scanning the previous scan line and to supply the space charges to the next scan line.

Other objects and features of the present invention in addition to the above objects will become apparent from the description of the embodiments with reference to the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described with reference to FIGS. 6 to 8.

Referring to FIG. 6, a PDP according to the present invention, in which auxiliary discharge cells 51 are disposed between discharge cells 1, is illustrated. A black matrix 52 is formed on the upper substrate 10 to absorb visible light on the auxiliary discharge cells 51. Each of the auxiliary discharge cells 51 causes a discharge by generating a discharge at the scan time of the previous scan line, and supplies the space charge generated by the discharge to the next scan line. This auxiliary discharge cells 51, each of the scan / sustain electrode lines _{(Y N-1, Y N} ) an auxiliary scanning electrode lines _{(AY N, AY N + 1} ), the common sustain electrode lines (Z) connected to the A common auxiliary electrode line AZ disposed between the first auxiliary electrode lines A Y _N and A Y _{N + 1} is provided at an intersection of the common auxiliary electrode lines AZ and the address electrode lines Xi and Xi + 1. When the scan lines are scanned from top to bottom, the Nth auxiliary scan electrode line AY _{N is} connected to the N-1st scan / sustain electrode line Y _N-1 . In contrast, when the scan lines are scanned from the bottom up, the N-th auxiliary scan electrode line AY _{N is} connected to the N-th scan / sustain electrode line Y _N. That is, the auxiliary scan electrode lines AY _N and AY _{N + 1} are connected to the scan / sustain electrode lines Y _N-1 or Y _N included in the previous scan line in the scanning order. The auxiliary scan electrode lines AY _N and AY _{N + 1} may be connected to the scan / sustain electrode lines Y _N-1 or Y _N in the PDP or in the driving circuit. The common auxiliary electrode lines AZ are connected in parallel to supply the same signal. Hereinafter, the scanning order will be described assuming that the scanning from the top to the bottom. Visible light generated by the discharge of the auxiliary discharge cells 51 is blocked by the black matrix 52. The discharge cells 1 on which an image is displayed are provided at the intersections of the scan / sustain electrode lines Y _N-1 and Y _N , the common sustain electrode line Z and the address electrode lines Xi and Xi + 1. do.

FIG. 7 is a driving waveform diagram illustrating a high speed driving method according to the present invention, and will be described with reference to the PDP shown in FIG. 6.

6 and 7, the stabilization pulse (STP) and the scan pulse (-SCP _N are common to the N-1 th scan / sustain electrode line (Y _N-1 ) and the N th auxiliary scan electrode line (AY _N ). _-1 ) and the sustain pulse (SUSP) are sequentially supplied. The reset pulse RSTP is supplied to the common auxiliary electrode line AZ.

First, when the reset pulse RSTP is supplied to the common auxiliary electrode line AZ at a point in the reset period, the scan pulse is applied to all the scan lines by the voltage difference between the common auxiliary electrode line AZ and the auxiliary scan electrode line AY _N. The auxiliary discharge cells 51 included therein are reset discharged. At this time, the common sustain electrode line Z is supplied with a pulse signal having a voltage level approximately equal to that of the sustain pulse. The pulse signal is discharged between the common sustain electrode line Z and the common auxiliary electrode line AZ during reset discharge by reducing the difference between the voltage level on the common sustain electrode line Z and the voltage level on the common auxiliary electrode line AZ. It prevents this from happening. In the present invention, since the space charge required for scanning is supplied from the auxiliary discharge cell 51 included in the previous scanning line, a reset discharge is formed between the scan / sustain electrode lines Y _N-1 and Y _N and the common sustain electrode line Z. There is no need to cause it. At this time, the generated visible light is blocked by the black matrix 52. As a result, it is possible to fundamentally prevent a decrease in contrast due to light emission due to a reset discharge occurring between the conventional scan / sustain electrode line Y and the common sustain electrode line. Subsequently, at time b, the stabilization pulse STP is supplied to the scan / sustain electrode lines Y _N-1 and Y _N and the auxiliary scan electrode line AY _N. The stabilization pulse STP causes an equal amount of wall charge or electric field to be formed in the auxiliary discharge cells 51 by discharge. At time c, a positive ramp wave RAMP is supplied to the scan / sustain electrode lines Y _N-1 and Y _N and the auxiliary scan electrode line AY _N , and a negative electrode is supplied to the common auxiliary electrode line AZ. Ramp wave (-RAMP) is supplied. The ramp waves RAMP and -RAMP accumulate a certain amount of wall charges and space charges in the auxiliary discharge cells 51 so that a discharge can easily occur between the auxiliary scan electrode line A Y _N and the common auxiliary electrode line AZ. do.

At time d of the address period, the N-1 th scan / sustain electrode line (Y _N-1 ) and the N th sub scan electrode line (AY _N ) have a negative scan pulse (−) so as to be synchronized with the data pulse (D). SCP _N-1 ) is supplied. Then, the discharge cells 1 included in the N−1 th scan line are selected by the address discharge generated according to the data pulse D and the scan pulse (−SCP _N-1 ). At this time, the address discharge is the discharge of the auxiliary discharge cells 51 included in the N-2 th scan line, that is, between the N-1 th auxiliary scan electrode line A Y _N-1 and the common auxiliary electrode line AZ. The internal wall voltage caused by the space charge supplied by the discharge and the voltage difference between the data pulse D and the scan pulse (-SCP _N-1 ) are added. At the same time, all of the auxiliary discharge cells 51 included in the N−1 th scan line are the N th auxiliary scan electrode line Y _N and the common auxiliary electrode line AZ regardless of the address discharge of the discharge cells 1. The discharge occurs due to the voltage difference between The space charge generated by the discharge of the auxiliary discharge cells 51 included in the N−1 th scan line is supplied to the next scan line, that is, the discharge cells 1 of the N th scan line. At time e, a negative scan pulse (-SCP _N ) is supplied to the _Nth scan / sustain electrode line Y _N. Then, the discharge cells 1 included in the N-th scan line are selected by the address discharge generated according to the data pulse D and the scan pulse (-SCP _N ). At this time, the address discharge is generated by the internal wall voltage and the data pulse (D) and the scan pulse (-SCP _N ) by the space charge supplied by the discharge of the auxiliary discharge cells 51 included in the N-th scan line. This is caused by the addition of a voltage difference. At the same time, all of the auxiliary discharge cells 51 included in the Nth scan line are the N + 1th auxiliary scan electrode line Y _{N + 1} and the common auxiliary electrode line regardless of the address discharge of the discharge cells ₁ . The discharge is caused by the voltage difference between AZ. At this time, the space charge generated by the auxiliary discharge of the auxiliary discharge cells 51 included in the Nth scan line is supplied to the discharge cells 1 of the next scan line, that is, the N + 1th scan line. On the other hand, during the address period, the common auxiliary electrode line AZ is applied with a positive DC voltage having a predetermined voltage level so that the auxiliary discharge cells 51 included in the scan line can be auxiliary discharged regardless of the address discharge. scan electrode line voltage between (AY _X) scan pulse (-SCP _X) when the auxiliary supply the scan electrode line (AY _X) and the common auxiliary electrode line (AZ) to the car to have a voltage difference more than a discharge start voltage. In addition, a positive DC voltage of a predetermined voltage level is also supplied to the common sustain electrode line Z so that address discharge can be stably generated. During the address period, the scan pulse (-SCP) supplied to each scan / sustain electrode line (Y) and the auxiliary scan electrode line (AY) has a pulse width of 1 mu s or less. As such, the pulse width of the scan pulse (-SCP) may be set to 1 μs or less by supplying the space charge supplied by the auxiliary discharge of the previous scan line into the discharge cells of the scan line currently being scanned. In other words, if there is no space charge supplied by the secondary discharge of the previous scan line, the address discharge is severely shaken (unstable discharge). Therefore, the pulse width of the scan pulse (-SCP) must be large enough, but the secondary discharge of the previous scan line is sufficient. If the space charge is sufficiently supplied, the address discharge can stably occur, so that the pulse width of the scan pulse (-SCP) can be shortened. When the address discharge is stable, the discharge starts stably at about 200 ns from the falling edge (or rising edge) of the scan pulse (-SCP), so that the pore width of the scan pulse (-SCP) can be set to a narrow width of 1 μs or less. In the address period, the visible light generated by the auxiliary discharge occurring in the auxiliary discharge cells 51 is blocked by the black matrix 52.

In the sustain period, the sustain pulse SUP is not supplied to the common auxiliary electrode line Z, and the base voltage GND is maintained. At the point f, the sustain pulse SSUS is supplied to the scan / sustain electrode lines Y _N-1 and Y _N and the common sustain electrode line Z. Then, no discharge occurs in the common auxiliary electrode line Z and the auxiliary scan electrode line AY, whereas the scan / sustain electrode line Y and the common sustain electrode line included in the discharge cells 1 selected by the address discharge are generated. At (Z), the wall voltage due to the address discharge and the voltage difference due to the sustain pulse (SUSP) are added to cause the discharge. At time g, a narrow erase pulse EP is applied to the common sustain electrode line Z to erase the sustain discharge to turn off the discharge cells 1 that are turned on.

On the other hand, since the pulse width of the scan pulse (-SCP) supplied to the auxiliary scan electrode line (AY) is set to 1 μs or less, the auxiliary discharge occurring between the auxiliary scan electrode line (AY) and the common auxiliary electrode line (AZ) within 1 μs. You have to get up. To this end, since the common auxiliary electrode AZ is not driven by an integrated circuit (IC) but can be driven by only a switch element, a sufficiently high voltage can be supplied to facilitate auxiliary discharge. In addition, since the wall charges and the space charges are accumulated in the auxiliary discharge cells 51 due to the reset discharge during the reset period, the auxiliary scan electrode lines (-SCP) also have scan pulses (-SCP) having a pulse width within 1 μs as shown in FIG. The auxiliary discharge may be stably generated between AY) and the common auxiliary electrode line AZ.

As described above, the driving method of the PDP according to the present invention supplies the space charge generated by the discharge generated in the previous scan line to the next scan line so that the width of the data pulse and the scan pulse required for the address discharge of the next scan line is 1 μs. By reducing the following, the time required for address discharge can be reduced. Accordingly, the driving method of the PDP according to the present invention can secure the sustain time as the address time decreases, thereby making it suitable for high speed driving and effectively coping with the high resolution. The PDP and its driving apparatus according to the present invention can reduce the time required for address discharge of the next scan line by providing a discharge cell for displaying an image on each scan line and an auxiliary discharge cell for supplying space charge to the next scan line. It is suitable for high speed driving. Still another object of the present invention is to form a black matrix on the auxiliary discharge cell to block visible light generated when the auxiliary discharge cell is discharged, thereby preventing contrast inhibition due to discharge occurring in the non-display period.

Those skilled in the art will appreciate that various changes and modifications can be made without departing from the technical spirit of the present invention. Therefore, the technical scope of the present invention should not be limited to the contents described in the detailed description of the specification but should be defined by the claims.

Claims (13)

A driving method of a plasma display panel including discharge cells for displaying an image by discharge and having a plurality of scanning lines scanned in an arbitrary scanning order. By applying the same voltage to the auxiliary discharge cell positioned between two adjacent scan lines and the previous scan line included in the two scan lines, the previous scan line is scanned, and at the same time, a discharge is generated in the auxiliary discharge cell to generate the next scan. Generating space charges required for a line in the auxiliary discharge cell; Supplying a scan pulse for scanning the next scan line; And generating an address discharge in the next scan line by using the space charge generated in the auxiliary discharge cell and the scan pulse. The method of claim 1, The scan pulse has a pulse width of less than 1μs high speed driving method of the plasma display panel. The method of claim 1, A reset period for initializing the scan lines by causing discharge of the auxiliary discharge cells included in all scan lines prior to the address discharge; A sustain period for sustain discharge of the discharge cells selected by the address discharge; And erasing the sustain discharge during the sustain period. The method of claim 3, wherein And a ramp signal is supplied to electrodes in the auxiliary discharge cells during the reset period. A plasma display panel comprising a plurality of scanning lines which include discharge cells for displaying an image by discharge and are scanned in an arbitrary scanning order. And a secondary discharge cell for generating space charges required for the next scan line and supplying the next scan line when the previous scan line included in the two scan lines is located between two adjacent scan lines. And the auxiliary discharge cell is discharged at the same time as scanning of the previous scan line to generate the space charge by applying a voltage at the time of scanning the previous scan line. The method of claim 5, The auxiliary discharge cell includes an auxiliary scan electrode supplied with a scan pulse for scanning the previous scan line; And a common auxiliary electrode for discharging the auxiliary scanning electrode. The method of claim 6, And the common auxiliary electrode is connected to each of the scan lines in parallel. The method of claim 7, wherein And the auxiliary scan electrode and the common auxiliary electrode are formed on the same plane to perform surface discharge to generate space charges required for the next scan line. The method of claim 6, And wherein the auxiliary discharge cell is provided with a visible light blocking layer for blocking visible light generated by a discharge generated between the auxiliary scan electrode and the common auxiliary electrode. A plasma display panel comprising a plurality of scanning lines which include discharge cells for displaying an image by discharge and are scanned in an arbitrary scanning order. An auxiliary discharge cell located between the previous scan line and the next scan line, By applying a voltage to the auxiliary discharge cell during the scan of the previous scan line, the auxiliary discharge cell is discharged at the same time as the scan of the previous scan line to generate the space charge required for the next scan line during the scan of the previous scan line. And an auxiliary discharge cell driving means for supplying the space charge to the next scan line. The method of claim 10, The auxiliary discharge cell driving means includes: an auxiliary scan electrode driver for supplying a scan pulse having a small pulse width to the auxiliary scan electrode included in the auxiliary discharge cell together with the scan / sustain electrode included in the discharge cell; And a common auxiliary electrode driver for driving common auxiliary electrodes connected in parallel to the scan lines adjacent to the auxiliary scan electrode. The method of claim 11, The common auxiliary electrode driver may include the auxiliary scan electrode and the common auxiliary electrode at a DC voltage and a sustain period of a predetermined voltage level having a reset pulse for initializing a full screen on the common auxiliary electrodes, a voltage difference dischargeable with respect to the scan pulse. A high speed driving device of a plasma display panel, characterized in that the base voltage is sequentially supplied to prevent discharge between the electrodes. delete