JP2003098995A - Method of driving plasma display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display a high-quality video by adjusting the charge amount in a gas immediately before sustaining discharge, and also adjusting the intensity of writing discharge. SOLUTION: In a scanning line to be written last, the voltage to be applied across a sustaining electrode and a scanning electrode is arranged to be reduced (21 in Fig. 3). Thus, the wall charge amounts can be adjusted by reducing the charge amounts accumulated on the wall surface of a cell so as to offset a potential difference between the scanning side electrode and the sustaining side electrode after write discharge. Then, a video can be displayed in high quality by uniformalizing the wall charges of the cell at the time of finishing an address period.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel driving method for displaying a high quality image on a plasma display panel.

[0002]

2. Description of the Related Art At present, a plasma display panel is drawing attention as a flat display device, and a plasma display driving method for displaying an image with high image quality is under development. FIG. 9 shows the connection between the plasma display panel and the data side drive unit, the scan side drive unit and the sustain side drive unit in the case of the dual scan drive system in which the data electrodes are divided and arranged on the upper portion 38 and the lower portion 39 of the plasma display panel. It is a figure.

An upper data side driving section 34 is connected to a plurality of data side electrodes 30 arranged on the upper part of the plasma display panel, and the data side electrodes 31 are formed on the lower part of the panel.
The lower data side drive unit 35 is connected to the plurality of data side electrodes 31 arranged in the vertical direction, and the number n intersects vertically (n is an even number).
The scan side drive unit 36 is connected to the scan side electrode 32, and the sustain side drive unit 37 is connected to the n sustain side electrodes 33 arranged in parallel to the scan side electrode 32.

FIG. 8 is a schematic view of a cell structure of an AC discharge type plasma display panel. Front plate 4 as shown in FIG.
The scan side electrode 32 and the sustain side electrode 3 are on the surface of 0.
3, the dielectric 41 and the protective film 42 are arranged, the rear plate 4
A data side electrode 31, a dielectric 45, a cell partition 43 and a phosphor 46 are arranged on the surface of No. 4. A gas 47 for emitting and discharging light is enclosed in the space inside the cell.

In the plasma display panel, a method of expressing gradation by dividing an image of one frame into a plurality of subfields (hereinafter, referred to as "SF") is used. In the AC discharge type, 1S.V. is generally used to control the discharge of gas in the cell. F. Is further divided into four periods. The four periods will be described with reference to FIG.

FIG. 7 shows 1S. F. 2 is a driving waveform of a conventional AC discharge type plasma display. In the setup period 1, wall charges are uniformly accumulated in all cells in the plasma display panel to facilitate discharge. In the address period 2, the writing discharge of the cells to be turned on is performed. In the sustain period 3, the cells written in the address period 2 are lit and the lit state is maintained. In the erase period 4, the cell charge is stopped by erasing the wall charges. In the figure, 5 is the final scan pulse, 6 is the first sustain pulse, 7 is the sustain-side electrode applied voltage waveform, 8 is the first and nth lines from the top of the plasma display panel having n (n is an even number) scan lines.
/ 2 + 1th scan-side electrode applied voltage waveform, 9 is the second and n / 2 + 2th scan-side electrode applied voltage waveform from the same panel upper part, 10 is the n / 2th and nth scan-side electrode applied from the same panel upper part It shows the voltage waveform.

The four periods will be described in detail with reference to FIG. Here, the cell in the lower part of the plasma display panel will be described as an example, but the same can be said for the upper part of the panel. FIG. 10 is a cell cross-sectional view for explaining the discharge inside the cell. In the setup period 1, a voltage higher than that applied to the data side electrode 31 and the sustain side electrode 33 is applied to the scan side electrode 32, and the gas in the cell 4
7 is discharged (a in the figure). The charges generated thereby are accumulated on the wall surface of the cell so as to cancel out the potential difference between the data side electrode 31, the scan side electrode 32, and the sustain side electrode 33, so that the protective film surface 51 near the scan side electrode 32 is negatively charged. Electric charges are accumulated as wall charges, and positive charges are accumulated as wall charges on the phosphor layer surface 50 near the data side electrode 31 and the protective film surface 52 near the sustain side electrode 33. Due to this wall charge, a wall potential V1 is generated between the scan side electrode and the data side electrode, and a wall potential V2 is generated between the scan side electrode and the sustain side electrode (b in the figure).

In the address period 2, when the cell is turned on, a voltage lower than that applied to the data side electrode 31 and the sustain side electrode 33 is applied to the scan side electrode 32, that is, the wall potential is applied between the scan side electrode and the data electrode. V
A voltage is applied in the same direction as 1 and a voltage is applied between the scan-side electrode and the sustain-side electrode in the same direction as the wall potential V2 to cause write discharge (c in the figure). Thereby, the phosphor layer surface 50 and the protective layer surface 52
Negative charges are accumulated on the surface of the protective layer 51 near the scan-side electrode 32, and positive charges are accumulated as wall charges on the surface 51 of the protective layer (d in the figure). As a result, a wall potential V3 is generated between the sustain-scan side electrodes (e in the figure).

In the sustain period 3, the scan side electrode 32
By applying a voltage higher than that of the sustain side electrode 33, that is, by applying a voltage in the same direction as the wall potential V3 between the sustain side electrode and the scan side electrode, sustain discharge is generated (f and g in the figure). ). As a result, cell lighting can be started. Then, by applying a pulse such that the polarities are alternately switched between the sustain side electrode and the scan side electrode, it is possible to intermittently emit pulsed light.

[0010]

By the way, although there was no problem in lighting a plasma display panel with a large cell pitch, when lighting a high-definition plasma display panel with a fine cell pitch, the upper and lower parts of the panel and the vicinity of the center Lighting failure occurs in the cell. Especially, the lighting failure near the center of the panel is a serious problem for the display device. The problem will be described below.

The lighting failure varies depending on the cell size of the plasma display panel, driving conditions, etc.
It can be classified into two. The first lighting failure is that a lighting failure occurs in the shape of a band in the lower part of the panel upper part 38 and the panel lower part 39 in FIG. 9 (hereinafter, referred to as "band-shaped lighting failure"). When the present inventors searched for the cause of this,
Excessive discharge occurs during the initial application of pulses during the sustain period, which causes abnormal wall charges and does not sustain the sustain discharge.Furthermore, excessive discharge is caused by the gas in the cell being excited by the write discharge. However, it has been found that this is caused by applying a sustain pulse.

The second lighting obstacle is the upper panel 38 in FIG.
In addition, a bright line is generated under the panel lower part 39 (hereinafter, referred to as "over-discharge lighting failure"). This occurs because the wall charges of the lowermost cells of the panel upper part 38 and the panel lower part 39 are accumulated more than the wall charges of the cells above the panel upper part 38 and the panel lower part 39. This will be described in detail with reference to FIG. FIG. 11 is a schematic view of a panel in the center of the plasma display panel. Upper data side electrode 30, lower data side electrode 31, scan side electrode 3
2, it is the figure which looked at the sustain side electrode 33 and the cell partition 43 from the panel surface plate of the same panel. Since write discharge is sequentially performed according to the address direction in the figure, a write discharge is generated in a cell and then a write operation is performed in a cell below the same cell, so that some of the charge during the write discharge is sequentially transferred to the lower cell. To do. However, in the cell in the final scanning line of the upper panel in the drawing, after the writing discharge, the writing is not performed in the cell below the same cell, so that the surplus charges after the writing discharge are accumulated as the wall charges. As a result, the wall potential V3 in FIG. 10 is increased and a lower voltage than that of other cells is applied between the sustain electrode and the scan electrode to generate sustain discharge, which appears as a bright line on the display image.

The third lighting failure is the upper panel portion 38 in FIG.
The probability of writing failure is higher in the cells above the panel lower portion 39 than in other cells, and lighting failure occurs in the vicinity of the panel center (hereinafter referred to as "writing failure lighting failure"). In the cells above the panel upper part 38 and the panel lower part 39, since discharge is generated at the very beginning of the address period, the excited gas is small, so that write discharge is less likely to occur and the probability of write failure is higher than other cells. That is the cause.

The present invention has been made in order to overcome the above-mentioned conventional problems, and displays a high-quality image by adjusting the charge amount in the gas immediately before the sustain discharge and the write discharge intensity. It is an object of the present invention to provide a driving method of a plasma display panel for performing the above.

[0015]

[Means for Solving the Problems] In order to solve the above problems, the following method was used. In order to suppress the band-shaped lighting failure, which is the first lighting failure, a period for extinguishing charges in the gas in the cell is provided between the final scanning pulse and the first sustain pulse.

In order to suppress a second lighting failure, that is, an over-discharge lighting failure, the sustain electrode applied voltage is reduced when the final scan pulse is applied as compared with when other scan pulses are applied. Alternatively, when the final scanning pulse is applied, the pulse width of the final scanning pulse is shortened as compared with when other scanning pulses are applied. In order to suppress the writing failure lighting failure which is the third lighting failure, the sustain electrode applied voltage is increased when writing cells in the first scan line on the panel upper part and the panel lower part than when writing other cells.

By using these methods, it is possible to stably discharge in the cell and display a high quality image.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) FIG. 1 shows a driving method of a plasma display panel by a dual scan system according to Embodiment 1 of the present invention. In the figure, as in FIG. 7, 1 is a setup period, 2 is an address period, 3 is a sustain period, 4 is an erase period, 5 is a final scan pulse, 6 is a first sustain pulse, and 7 is a sustain-side electrode applied voltage waveform. , 8 is the first and n from the top of the plasma display panel having n (n is an even number) scanning lines.
/ 2 + 1th scan-side electrode applied voltage waveform, 9 is the second and n / 2 + 2th scan-side electrode applied voltage waveform from the same panel upper part, 10 is the n / 2th and nth scan-side electrode applied from the same panel upper part Represents voltage waveform, 2
0 represents the time from the final scan pulse to the first sustain pulse. In FIG. 1, in the voltage waveform, the upper part of the drawing shows a high potential and the lower part of the drawing shows a low potential. The cell in which the wall charges are actually formed in the address period is a cell formed by intersecting the data side electrode to which the write signal pulse is applied and the scan side electrode to which the scan pulse is applied.

Here, the cause of the first lighting trouble will be described. The first pulse, which is the first pulse in the sustain period, is generated when the gas in which the charge generated by the write discharge is sealed in the cell is in the excited state. When the sustain pulse 6 is applied, excessive sustain discharge occurs and wall charges are excessively accumulated. After that, when the first sustain pulse falls, the wall charges are discharged to generate a discharge, and the discharge is weakened when the next sustain pulse is applied, and the sustain discharge cannot be continued. Therefore, band-shaped lighting failure occurs.

Therefore, in the present embodiment, in order to avoid the influence of the writing discharge which is the cause of the first lighting failure, after applying the final scanning pulse 5, the excited state of the gas generated by the writing discharge is applied. After the time has reached a stable state, that is, after time 20 has passed, the first
The sustain pulse 6 is applied to suppress an excessive sustain discharge. Here, time 20 corresponds to FIG.
The time from the trailing edge 5a of the final scanning pulse 5 to the leading edge 6a of the first sustain pulse 6 as shown in FIG.

This time 20 may be a time longer than at least the time from the excited state to the stable state of the gas, but if it is too long, the sustain period 3 is shortened and applied. Since the number of sustain pulses must be reduced and the brightness will decrease,
It is desirable that the sustain period is compressed so that the luminance does not decrease.

The time required for the gas in the cell to transition from the excited state to the stable state depends on the type and composition of the gas, but the time 20 from the final scan pulse 5 to the first sustain pulse 6 should be 20 μs to 80 μs. The inventors have experimentally confirmed that the band-shaped lighting failure can be prevented by. The period during which the gas changes from the excited state to the stable state can be measured as follows.

Measurement is carried out by applying a pulse as shown in FIG. 2 to each of the scan side electrode, the sustain side electrode and the data side electrode. That is, by alternately applying the pulse P1 to the scan / sustain side electrodes for the period of T1, the gas in the cell is discharged and the panel is turned on. Then, after a period of T2, a pulse (erase pulse) P2 having a time width narrower than that of the pulse P1 is applied to the data side electrode. At that time, discharge occurs, but T2 is gradually lengthened, and T2 at which discharge does not occur is measured. This utilizes the fact that if the gas in the cell is in an excited state, discharge is generated by the erase pulse P2, but if the gas is in a stable state, discharge is not generated. The period T2 determined in this way is a period in which the gas transitions from the excited state to the stable state.

It is considered that, conventionally, the period from the application of the final scan pulse 5 to the application of the first sustain pulse was about 10 μs. A second embodiment and a third embodiment described below are driving methods of a plasma display panel, which were devised to eliminate the above-mentioned second lighting trouble. In other words, this is an example of a method for eliminating the over-discharge lighting failure by preventing excess charges from accumulating in the final line on the panel upper part and the panel lower part.

The second lighting failure, the over-discharge lighting failure, is
The cells in the n / 2th and nth scan lines are generated because more wall charges are accumulated than in the other scan lines.
This is because the writing is started from the first and n / 2 + 1th scanning lines, and writing is sequentially performed up to the n / 2th and nth scanning lines, so that the n / 2th and nth writings are performed last. The scan lines are formed by the accumulation of excess charges after wall discharge as wall charges.

In order to prevent excess charges from accumulating in the final line on the upper part of the panel and the final line on the lower part of the panel, it is specifically carried out as in the following second and third embodiments. (Embodiment 2) FIG. 3 shows a method of driving a plasma display panel according to Embodiment 2 of the present invention. In the figure, the same numbers as those in FIG. 1 represent the same elements. In FIG. 3, reference numeral 21 indicates that the sustain electrode applied voltage is lowered when the final scan pulse is applied to the scan side electrode.

As described above, n is the last data to be written.
In the / 2nd and nth scanning lines, excess charges after the write discharge are accumulated as wall charges. Therefore, if the voltage is applied under the same conditions as the other scan lines, the sustain discharge starts at a voltage lower than that of other cells during the sustain period. Therefore,
In the present embodiment, in order to suppress the over-discharge lighting failure which is the second lighting failure, the voltage applied between the sustain electrode and the scan electrode is lowered in the scan line to be written last, as indicated by 21 in FIG. . As a result, the wall charge amount can be adjusted by reducing the charge amount accumulated on the wall surface of the cell so as to cancel the potential difference between the scan side electrode and the sustain side electrode after the write discharge. And
The wall charges of the cells at the end of the address period can be made uniform, and an image can be displayed with high quality. (Embodiment 3) FIG. 4 shows a method of driving a plasma display panel according to Embodiment 3 of the present invention. In FIG. 4, the same numbers as those in FIG. 1 represent the same elements. . In FIG. 4, 22 indicates the width of the final scanning pulse.

In order to suppress the second lighting failure, that is, the over-discharge lighting failure, the final scan pulse width 22 in FIG. 4 is made shorter than the other scan pulses so that the charge in the gas moves to the wall surface of the cell. The amount of wall charge is adjusted by suppressing the accumulation of electric charges. As a result, the wall charges of the cells at the end of the address period can be made uniform and an image can be displayed with high quality. (Embodiment 4) FIG. 5 shows a method of driving a plasma display panel according to Embodiment 4 of the present invention. In the figure, the same numbers as those in FIG. 1 represent the same elements. . In FIG. 5, reference numeral 23 indicates that the sustain electrode applied voltage is increased when the first scan pulse is applied to the scan side electrode.

The cause of the write failure, which is the third lighting failure, is the probability that a write discharge occurs in other cells because the gas is not in the excited state in the cells in the first and n / 2 + 1th scanning lines. It is lower than. In order to suppress the write failure lighting failure, which is the third lighting failure, a high voltage is applied between the sustain electrode and the scan electrode to increase the voltage applied to the gas in the cell, as indicated by 23 in FIG. As a result, the discharge of the same gas can be promoted, and the probability of writing discharge can be increased. Therefore, defective writing can be reduced, non-lighted cells in the upper and central portions of the plasma display panel can be reduced, and a high-quality image can be displayed. Here, an example of a circuit that controls each electrode driving unit so as to have the above voltage waveform will be described.

FIG. 6 is a diagram showing the configuration of the circuit.
The timing control unit 60 adjusts the waveform. The timing controller 60 includes a clock generator 61, an address period controller 62, and a sustain period controller 63. The clock generator 61 is a circuit that generates a clock pulse that serves as a timing reference when controlling the voltage waveform applied to each electrode based on the horizontal and vertical synchronization signals separated from the video signal. The control unit 62 controls the waveform of the scan pulse in the address period, the application timing, and the write signal pulse generation timing, and the sustain period control unit 63 controls the waveform of the sustain pulse in the sustain period and the application timing.

The address period control unit 62 is composed of a counter unit 62a and a control signal generation unit 62b, and the sustain period control unit 63 is composed of a counter unit 63a and a control signal generation unit 63b. Counter section 62
Reference characters a and 63a count the clock pulses generated by the clock generator 61. Note that the counter units 62a, 6
The count value at 3a is 1S. When F ends, it is reset.

The control signal generator 62b includes a counter 6
Based on the count value of 2a and the subfield information read from the frame memory 65, a timing signal for generating a write signal pulse to be applied to the data-side electrode is generated, and the upper data-side drive unit 34 and the lower data-side drive unit 35 are generated. Output. In addition to the generation of the control signal, the scan side drive unit 36 and the sustain side drive unit 37 are instructed to apply a pulse of a predetermined voltage. Here, the subfield information is information indicating which subfield is turned on or off in order to display a corresponding gradation value in each pixel. The input video signal is converted into subfield information generated for each pixel by the A / D converter 64 and the subfield division controller 65, and then temporarily stored in the frame memory 66, and then the control signal generator 62b.
Read by.

The control signal generator 63b includes a counter 6
A control signal for controlling the potential of the voltage applied to the scan side electrode, the potential of the scan pulse applied to the sustain side electrode, and the timing is generated according to the count value of 3a, and the scan side drive unit 36 and the sustain side drive unit are generated. Output to 37. More specifically, first, the clock generator 6
A clock pulse is generated at 1 and is counted by the counter unit 62a, and when the count value corresponds to one line (row direction), the subfield information is read from the frame memory 66 and written to one line.

In parallel with this, the counter units 62a, 6
The clock pulses are counted by 3a, and the control units 62 and 63 generate control signals according to the count values. That is, in the case of the first embodiment, the sustain period control unit 6
The control signal generator 6 applies a sustain pulse to the scan / sustain side electrode when the count value of the counter 63a reaches a predetermined value K1.
The control signal generated in 3b is output to each electrode driving unit to issue an instruction to that effect. Here, the count value K1 is the first
A value that takes into consideration the period in which the above-mentioned gas transitions to a stable state from the time when writing to each line is completed so that the band-shaped lighting failure that is the Is set to.

Next, in the case of the second embodiment, if the count value of the counter section 62a reaches a predetermined value K2, the address period control section 62 will write in the next line. Outputs a signal generated by the control signal generating unit 62b to the sustain side electrode driving unit so as to lower the potential applied to the sustain side electrode and issues an instruction to that effect. Here, the count value K2 is (final line-
1) It is set to a value at which writing to the first line is completed. Therefore, it is possible to prevent the wall charges formed by writing to the final line from becoming excessive, so that it is possible to eliminate the over-discharge lighting failure which is the second lighting failure.

Further, in the case of the third embodiment, the count value of the counter portion 62a is a predetermined value K2.
If so, the address period control unit 62 issues an instruction to the sustain side electrode drive unit so as to narrow the width of the pulse applied to the sustain side electrode when writing to the next line. This avoids excess wall charge created by writing to the last line, so the second
It is possible to eliminate the over-discharging lighting failure, which is the lighting failure of.

Further, in the case of the fourth embodiment, when the count value of the counter section 62a reaches a predetermined value K3, the address period control section 62 temporarily sets the potential applied to the scan side electrode. The control signal generator 62b outputs a control signal generated by the control signal generator 62b to the scan-side electrode driver to instruct the fact. Here, the count value K3 is set to a value at the time when writing is started on the first line of each of the panel upper portion and the panel lower portion in the two-split screen. Therefore, writing failures are reduced when writing to the first line.

Although the present invention has described the lighting troubles at the upper end, the lower end and the center of the plasma display panel when the data side electrodes are divided into upper and lower parts,
Even when the single scan method in which the data-side electrode is driven without division is used, the same lighting failure occurs at the upper and lower ends of the panel. It goes without saying that the occurrence of a lighting failure can be suppressed by using the above method.

[0039]

As described above, the driving method of the plasma display panel according to the present invention has the following effects. That is, by providing a period between the final scan pulse and the first sustain pulse for extinguishing the charges in the gas in the cell, it is possible to prevent the sustain discharge from stopping and prevent the band-shaped lighting failure. In addition, when the final scan pulse is applied, the sustain electrode applied voltage is reduced as compared to when other scan pulses are applied, or when the final scan pulse is applied, the pulse width of the final scan pulse is shortened as compared with when other scan pulses are applied, so that after the write discharge. The wall charges of the cells can be made uniform within the panel, and the over-discharge lighting failure can be suppressed. Furthermore, the voltage applied to the sustain electrode at the time of writing the cell in the uppermost scan line (the first line of each of the upper and lower parts of the screen divided into two in the case of the dual scan system) is higher than that at the time of writing to the other cells. By increasing the number, write discharge can be promoted and write failure lighting failure can be prevented.

In this way, since the lighting trouble can be eliminated,
High quality images can be realized on a high definition panel with a fine cell pitch. In particular, it has a remarkable effect in displaying a high-quality image on the dual scan plasma display panel.

[Brief description of drawings]

FIG. 1 is a diagram showing a driving method of a plasma display panel according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a method for measuring a period during which a gas transitions from an excited state to a stable state.

FIG. 3 is a diagram showing a driving method of a plasma display panel according to a second embodiment of the present invention.

FIG. 4 is a diagram showing a driving method of a plasma display panel according to a third embodiment of the present invention.

FIG. 5 is a diagram showing a driving method of a plasma display panel according to a fourth embodiment of the present invention.

FIG. 6 is a diagram showing a configuration of a timing control unit according to the exemplary embodiment of the present invention.

FIG. 7 is a diagram showing an example of a driving method of a conventional plasma display panel.

FIG. 8 is a diagram showing an example of a structure of a plasma display panel.

FIG. 9 is a diagram showing a connection between a plasma display panel, a data side driving unit, a scan side driving unit, and a sustain side driving unit according to the related art and the embodiment.

FIG. 10 is a diagram for explaining discharge in a cell.

FIG. 11 is a diagram for explaining writing discharge of cells in the central portion of the plasma display panel.

[Explanation of symbols]

1 Setup period 2 Address period 3 Sustain period 4 Erase period 5 Final scan pulse 6 First sustain pulse 7 Sustain side electrode applied voltage waveform 8 1st and n / 2th scan side electrode applied voltage waveform 9 2nd and n / 2 + 1 Second scan-side electrode applied voltage waveform 10 n / 2-1 and n-th scan-side electrode applied voltage waveform 20 Time from the last scan pulse to the first sustain pulse 60 Timing control unit 61 Clock generation unit 62 Address period control unit 62a Counter section 62b Control signal generation section 63 Sustain period control section 63a Counter section 63b Control signal generation section

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Katsumi Adachi             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. (72) Inventor Isao Kawahara             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F-term (reference) 5C080 AA05 BB05 DD07 DD09 EE29                       FF12 HH04 HH05 JJ02 JJ04                       JJ06

Claims (6)

[Claims] 1. A plurality of column electrodes, a plurality of first row electrodes arranged so as to intersect with the column electrodes, and the first electrode.
In a plasma display panel having a plurality of second row electrodes arranged in parallel with the second row electrodes, a sequential scanning pulse is applied to the first row electrodes and a first voltage is applied to the second row electrodes. A driving method for displaying an image on a plasma display panel by alternately repeating an address period for selecting lighting or extinguishing of a cell by applying a write pulse to the column electrode according to video data together with a sustain period for maintaining lighting. A method of driving a plasma display panel, wherein a second voltage lower than the first voltage is applied to the second row electrode when the final scanning pulse is applied to the first row electrode. 2. The plurality of column electrodes are a plurality of first column electrodes arranged in a first region of the plasma display panel and a plurality of second column electrodes arranged in a second region of the plasma display panel. The driving method of the plasma display panel according to claim 1, wherein the plasma display panel is driven by a dual scan method. 3. A plurality of column electrodes, a plurality of first row electrodes arranged to intersect the column electrodes, and the first electrode.
In a plasma display panel having a plurality of second row electrodes arranged in parallel with the second row electrodes, a sequential scanning pulse is applied to the first row electrodes and a first voltage is applied to the second row electrodes. A driving method for displaying an image on a plasma display panel by alternately repeating an address period for selecting lighting or extinguishing of a cell by applying a write pulse to the column electrode according to video data together with a sustain period for maintaining lighting. A method of driving a plasma display panel, wherein the pulse width of the final scanning pulse is shortened as compared with other scanning pulses. 4. The plurality of column electrodes are a plurality of first column electrodes arranged in a first region and a plurality of second column electrodes arranged in a second region of the plasma display panel. The method for driving a plasma display panel according to claim 3, wherein the plasma display panel is driven by a dual scan method. 5. A plurality of column electrodes, a plurality of first row electrodes arranged so as to intersect with the column electrodes, and the first electrode.
In a plasma display panel having a plurality of second row electrodes arranged in parallel with the second row electrodes, a sequential scanning pulse is applied to the first row electrodes and a first voltage is applied to the second row electrodes. A driving method for displaying an image on a plasma display panel by alternately repeating an address period for selecting lighting or extinguishing of a cell by applying a write pulse to the column electrode according to video data together with a sustain period for maintaining lighting. A third voltage higher than the first voltage is applied to the second row electrode when the first scan pulse in the address period is applied to the first row electrode.
A method for driving a plasma display panel, characterized in that the voltage of (1) is applied. 6. The plurality of column electrodes are a plurality of first column electrodes arranged in a first region and a plurality of second column electrodes arranged in a second region of the plasma display panel. The method of driving a plasma display panel according to claim 5, wherein the plasma display panel is driven by a dual scan method.