JP2734405B2 - Plasma display panel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an AC (alternating current) surface discharge type plasma display panel used for an information display terminal, a flat panel television, and the like. The present invention relates to an AC surface discharge type plasma display panel to be realized.

[0002]

2. Description of the Related Art A color plasma display panel is
This is a display that performs a display operation by exciting visible light by exciting a phosphor with ultraviolet light generated by gas discharge. Among them, AC type is DC in terms of luminance, luminous efficiency and life.
It is said to be superior to the mold.

FIG. 10 is a sectional view of a conventional reflective AC surface discharge plasma display panel.

Referring to FIG. 10, a glass front substrate 80 is provided.
Then, a transparent electrode 81 is formed. A plurality of transparent electrodes 81 are formed in a strip shape in a direction perpendicular to the paper surface of FIG. 10, and two are formed per discharge cell. Between the transparent electrodes 81 adjacent to each other, a pulsed AC voltage of usually several tens kHz to several hundreds kHz is applied to obtain a display discharge. The material usually used for the transparent electrode 81 is a tin oxide or ITO (Indium-Tin-Oxide) film, but the sheet resistance is usually as high as several tens Ω / □. Therefore, especially in a large-sized panel or a high-definition panel, the electrode resistance becomes several tens of kΩ, and the applied voltage pulse does not sufficiently rise and driving becomes difficult.

Therefore, a bus electrode 82, usually made of a thick metal film, is formed on the transparent electrode 81 to reduce the resistance value of the electrode. Then, the bus electrode 82 (and the exposed surface of the transparent electrode 81 and the front substrate 80) is covered with a transparent insulating layer 83 usually made of a thick film of low melting point lead glass.

A black partition 85 is formed on the transparent insulating layer 83. The black partition 85 is usually formed by thick film printing or the like. As a material, a thick film paste containing a black pigment is used to improve the contrast of the screen.

Then, a protective layer 84 is formed so as to cover the transparent insulating layer 83 and the black partition 85. The protective layer 84 is formed of, for example, a thin film of MgO (e.g., vapor deposition or sputtering) or a thick film (e.g., printing or spraying).

On the other hand, a data electrode 88 for writing display data is formed on the rear substrate 90 by a metal thick film or a thin film, and this is covered with a white insulating layer 87 made of a low-melting-point lead glass and a thick-film paste to which a white pigment is added. I do. The white insulating layer 87 functions as a reflection layer that reflects light emitted from the discharge cells to the front substrate 80.

The data electrode 88 is arranged orthogonal to the transparent electrode 81. A white partition 86 is formed on the data electrode 88 via a white insulating layer 87 by a normal thick film printing or the like, and a phosphor 89 corresponding to the emission color of each discharge cell is applied to a portion to become each discharge cell. The phosphor 89 is also formed on the side surface of the white partition 86 to increase the phosphor application area.

The above-mentioned black partition 85 formed on the front substrate 80 and the white partition 86 formed on the rear substrate 90 are adhered and hermetically sealed to form a gas capable of discharging inside.
For example, a mixed gas of He, Ne, and Xe is sealed at about 500 torr.

When a pulsed AC voltage is applied between adjacent transparent electrodes 81 (in FIG. 10, the transparent electrodes 81 are arranged in a direction perpendicular to the plane of the paper), gas discharge (surface discharge) occurs, Plasma is generated in the gas space 91. The phosphor 89 is excited by the generated ultraviolet light to generate visible light, and display light is obtained through the front substrate 80.

Adjacent transparent electrodes 81 for generating surface discharge
Are composed of scan electrodes and sustain electrodes.

In actual panel driving, a sustain pulse is applied to the transparent electrode 81 which is a surface discharge electrode. When a discharge is generated, a voltage is applied between the scanning electrode (one of a pair of adjacent transparent electrodes 81) and the data electrode 88 to generate an opposing discharge. Is maintained in.

FIG. 9 is a plan view of a front substrate of the above-described conventional plasma display panel. FIG. 10 is a diagram showing a cross section along the line AA ′ of FIG.

Referring to FIG. 9, barrier ribs 70 (corresponding to black barrier ribs 85 in FIG. 10) formed on the front substrate are formed in a lattice shape to define each discharge cell.

In FIG. 9, the white partition 86 in FIG. 10 is not shown because it is hidden by the partition (black partition) 70. The bus electrode 82 and the transparent insulating layer 8 shown in FIG.
3 and the protective layer 84 are omitted.

As shown in FIG. 9, a scanning electrode 71 and a sustaining electrode 72 corresponding to the adjacent transparent electrode 81 in FIG. 10 have a predetermined interval (ie, a surface discharge gap 73), for example, 90 μm.
They are arranged in parallel with each other at intervals of about m, and are arranged so as to enter two (in pairs) into one discharge cell defined by the black partition walls. A sustain discharge is generated between the adjacent transparent electrodes (scanning electrode 71 and sustain electrode 72).

[0018]

In an AC surface discharge type plasma display, since a discharge current flows in a very short time, a peak of the discharge current is large and a panel drive circuit capable of flowing a large current is required. It was required, and this was a major obstacle to cost reduction.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is possible to suppress only the discharge current value, that is, the peak current value of the discharge current without substantially changing the luminance, thereby reducing the cost of the drive circuit. It is an object of the present invention to provide a plasma display panel that achieves the above.

[0020]

In order to achieve the above object, the present invention relates to an AC surface discharge type plasma display panel, wherein at least one surface discharge electrode of a surface discharge electrode pair is divided into a plurality of lines in the longitudinal direction. And at least discharge
The plurality of surface discharge cells divided in a cell area.
The poles are within the display area of the plasma display panel.
They are connected to each other by connecting parts formed in
Is divided in the discharge cell region.
Corresponding to the plurality of surface discharge electrodes.
A plasma display panel comprising:

In the present invention, preferably, the connection portion overlaps at least a partition wall defining a discharge cell and formed in a direction orthogonal to the surface discharge electrode.

In the present invention, it is preferable that the surface discharge electrode and the connection part are transparent electrodes, and the bus electrode is a divided surface farthest from the surface discharge gap among a plurality of divided surface discharge electrodes. It is characterized in that it is formed on a discharge electrode.

Further, in the present invention, preferably,
The width of the divided surface discharge electrode on the side close to the surface discharge gap of the plurality of divided surface discharge electrodes does not exceed the width of the divided surface discharge electrode on the side far from the surface discharge gap. .

Further, in the present invention, the gap between the plurality of divided surface discharge electrodes is set to a predetermined range (preferably 30).
μm to 200 μm).

In the present invention, preferably,
The gap between the divided surface discharge electrodes on the side far from the surface discharge gap of the plurality of divided surface discharge electrodes does not exceed the gap between the divided surface discharge electrodes on the side closer to the surface discharge gap. And

In the present invention, preferably, the connection portion is formed so as to protrude into the discharge cell with a predetermined size (5 μm to 60 μm) from the partition wall.

Further, in the present invention, preferably,
The discharge cell is formed in a rectangular shape having a long side in a direction perpendicular to the surface discharge electrode.

[0028]

With the above arrangement, according to the plasma display panel of the present invention, it is possible to divide a light emission discharge current into a photo discharge current having a plurality of peaks. For this reason, only the peak current value can be reduced without substantially changing the discharge current value, that is, the panel luminance. Therefore,
According to the present invention, it is possible to reduce the current capacity required for the drive circuit and achieve a significant cost reduction.

[0029]

Next, an embodiment of the present invention will be described with reference to the drawings.

[0030]

Embodiment 1 FIG. 1 is a plan view for explaining one embodiment of the present invention. Referring to FIG. 1, the panel structure of the present embodiment has almost the same structure as that of the conventional example shown in FIG. 9, but is different from the conventional example in the shape of the surface discharge electrode. That is, as shown in FIG. 1, in the present embodiment, the scanning electrode 2 and the sustaining electrode 3 are both divided into two in parallel with the longitudinal direction of the electrode, and the two divided electrodes are connected to the connection part 4. Connected.

As a result, in this embodiment, openings 5 are formed in the scanning electrode 2 and the sustaining electrode 3, respectively. The connection part 4 is formed at a predetermined position in the display area of the plasma display panel, and is formed, for example, so as to overlap a portion of the partition wall 1 defining a discharge cell, which is orthogonal to the scan electrode 2 and the sustain electrode 3. At this time, the connection portion 4 is formed so as not to protrude from the partition wall 1.

Then, both the scan electrode 2 and the sustain electrode 3
It consists of two electrodes completely separated in the discharge cell.

Further, the bus electrode 7 is formed on the divided surface discharge electrode on the side farther away from the surface discharge gap 6 which is a gap between the scan electrode 2 and the sustain electrode 3. That is, the bus electrode is divided into the scanning electrode 2 and the sustain electrode 3
Of these, the scanning electrode 2 and the sustaining electrode 3 are arranged on the surface discharge electrode that is not the surface discharge electrode facing the surface discharge gap 6 (farther from the surface discharge gap 6).

As a specific example of the electrode dimensions, assuming that the cell pitch is 1.05 mm in length and 0.35 mm in width, the surface discharge gap 6 is 90 μm, the width of each of the divided surface discharge electrodes is 130 μm, and the divided surface discharge electrode is 130 μm. 120μ gap between discharge electrodes
m, and the width of the connection part 4 is 50 μm.

Referring to FIG. 2, the difference between the discharge current of the conventional plasma display panel and the discharge current of the plasma display panel according to this embodiment will be described below. In FIG. 2, the horizontal axis represents the elapsed time (in nanoseconds) from the peak of the displacement current, and the vertical axis represents the current value (milliA).

FIG. 2A is a diagram showing a discharge current waveform of a conventional example. As shown in FIG. 2A, a pulse current is applied to the surface discharge electrode, and at the same time, a displacement current 20 for charging the capacitance of the panel flows. After a lapse of a little time from this, the discharge current 21 for light emission flows. Here, the slight time is the sum of the statistical delay time of discharge and the formation delay time.

FIG. 2B is a diagram showing a discharge current waveform according to one embodiment of the present invention. As shown in FIG. 2B, after a lapse of the same time as the conventional example from the displacement current 22, a discharge current 23 of the first light emission flows. This is caused by the discharge of the electrode (hereinafter referred to as “inside electrode”) on the side closer to the surface discharge gap 6 among the two divided surface discharge electrodes.

The charged particles generated by this discharge drift in the discharge cell, and the priming effect causes an electrode farther from the surface discharge gap 6 of the surface discharge electrode (hereinafter referred to as "outer electrode") to start discharging. This is the emission current 24 for light emission.

In the structure of the conventional example, these two light emission discharge currents are flowing simultaneously as the light emission discharge current 21. In this embodiment, it is possible to separate them into almost two. That is, as shown in FIG. 2B, in this embodiment, the peak value of the light emission discharge current (the light emission discharge current 2
The peak value of No. 3 is substantially less than 200 mA), which is much lower than that of the conventional example (in the conventional example of FIG. 2A, the peak value of the discharge current 21 of light emission is about two hundred and several tens mA).

In this embodiment, it is also very important that the bus electrode 7 is formed on the outer electrode.
That is, when all of the surface discharge electrodes are formed of, for example, a metal thin film, the inner electrode has a stronger electric field, so the discharge current of the first light emission by the inner electrode becomes too strong, and the effect of separating the discharge current is reduced. .

On the other hand, in the case of the transparent electrode in which the bus electrode is formed on the outer electrode 7 as in the present embodiment, a current is supplied to the inner electrode through the connection portion 4 formed of the transparent electrode. The sheet resistance of the transparent electrode is 50
If Ω / □, 120 Ω in the above example.

Therefore, in this embodiment, the discharge of the inner electrode is current-limited by the connection portion 4, and the effect of discharge current separation is enhanced.

In FIG. 1, the connection portions 4 are formed for each partition wall 1 between the discharge cells, but they need not always be formed in this manner, and may be formed at any intervals. Then, by reducing the number of the connection portions 4, the effect of the current limitation on the discharge of the inner electrode is further enhanced. In addition, the effect of the current limitation is increased by reducing the width of the connection portion 4 and increasing the resistance.

In this embodiment, the openings 5 are formed in both the scanning electrodes 2 and the sustain electrodes 3. However, even if the openings are formed only in one of the scan electrodes 2 (for example, only the sustain electrodes 3), a desired shape can be obtained. The effect can be obtained.

[0045]

Second Embodiment A second embodiment of the present invention will be described below.
In this embodiment, in order to further enhance the effect of the first embodiment, the width of the divided surface discharge electrode is changed between the inner electrode and the outer electrode. FIG. 3 is a plan view for explaining the configuration of the second embodiment of the present invention.

Referring to FIG. 3, scanning electrode 31 and sustaining electrode 32 are divided in the longitudinal direction, and the widths of the divided inner and outer electrodes are changed as shown in FIG. The electrode width is reduced and the electrode width of the outer electrode is increased.

This configuration is because the inner electrode, where a strong discharge is likely to occur, is narrowed to suppress the current in order to more efficiently disperse the discharge current of light emission.

FIG. 4A shows a discharge current waveform of the electrode structure according to the first embodiment shown in FIG.
FIG. 4B is a diagram showing a discharge current waveform of the electrode structure according to the embodiment shown in FIG.

In this embodiment, since the areas of the inner electrodes of the scanning electrode 31 and the sustain electrode 32 are small (see FIG. 3), as shown in FIG. The discharge current 44 is weakened, and the discharge current 45 of the subsequent light emission is accordingly increased. As a result, the total current amount hardly changes, that is, without changing the luminance, and the peak current value is reduced to about half or less of the first embodiment (the peak value of the discharge current 44 is set to about 100 mA). Could be reduced.

In order to efficiently disperse the emission current of light emission, it is preferable that the divided current peaks are separated from each other by about 50 nsec or more in view of the current waveform. For this purpose, it is necessary to set the gap between the divided surface discharge electrodes to an optimum value.

FIG. 5 shows the gap between the divided surface discharge electrodes,
9 shows the relationship between the delay of the current peak and the minimum sustain voltage. Here, the “current peak delay” is the time difference between the peak of the discharge current of the first light emission and the peak of the discharge current of the second light emission. In FIG. 5, the solid line shows the relationship between the current peak delay and the gap between the divided surface discharge electrodes, and the broken line shows the relationship between the minimum sustaining voltage and the gap between the divided surface discharge electrodes.

As shown in FIG. 5, when the gap between the divided surface discharge electrodes is less than 30 μm, the discharge is hardly divided into two, and the effect of reducing the peak current is not recognized.

On the other hand, when the gap between the divided surface discharge electrodes is 30 μm or more, the current peak is clearly separated,
As the gap increases, the separation of the discharge current increases in proportion to this.

The relationship between the minimum sustaining voltage at this time and the gap between the divided surface discharge electrodes (broken line) shows that the gap between the divided surface discharge electrodes exceeds 30 μm and a large change occurs after the discharge is separated. Is not shown. However, if the gap between the divided surface discharge electrodes exceeds 200 μm, it becomes difficult to rapidly maintain the discharge of the outer electrode. When the delay of the current peak exceeds 200 μm of the surface discharge electrode in which the gap is divided, the delay also sharply increases like the minimum sustain voltage.

As described above, the optimum gap between the divided surface discharge electrodes ranges from 30 μm where the current is clearly separated to 200 μm just before the sustain voltage of the outer electrode starts to rise sharply.

[0056]

Third Embodiment A third embodiment of the present invention for dispersing a discharge current efficiently will be described below. FIG. 6 is a plan view for explaining a third embodiment of the present invention.

Referring to FIG. 6, in the present embodiment, each of the surface discharge electrodes consisting of scan electrode 51 and sustain electrode 52 is divided into three, and the thickness (width) of each is set as described above. The width is gradually increased from the inside to the outside of the discharge gap 55.

At this time, it is more preferable that the gap between the three divided surface discharge electrodes is changed as follows. That is,
The gap on the side close to the surface discharge gap 55 is widened, and the gap between the divided surface discharge electrodes is reduced as the distance from the surface discharge gap 55 increases.

Since the discharge is strong near the surface discharge gap 55, a sufficient gap is provided to separate the discharge current.

On the other hand, the outer gap is made narrow to prevent the minimum sustaining voltage from rising.

An example of the dimensions of each electrode is as follows. In the above-described discharge cell pitch (1.05 mm in height and 0.35 mm in width), the width of the three divided surface discharge electrodes corresponds to the surface discharge gap 5.
In order from the 5th side, the gaps between the surface discharge electrodes divided into 30 μm, 70 μm, 100 μm and the three divided surface discharge electrodes are similarly 120 μm, 60 μm.
m.

[0062]

Embodiment 4 A fourth embodiment of the present invention will be described below.
In all of the first to third embodiments, the surface discharge electrodes are completely separated in the discharge cells. That is, in each of the above embodiments, since the electrodes are separated, the discharge current is also separated, and the current peak can be suppressed.However, if the gap is too wide, it becomes difficult to maintain the discharge of the outer electrode. And the minimum sustaining voltage may be increased.

In order to prevent this, the fourth embodiment of the present invention is such that the divided surface discharge electrodes are connected in the discharge cells to the extent that the characteristics of the separated electrodes are not impaired. is there.

The fourth embodiment of the present invention will be described with reference to FIG. As shown in FIG. 7, in the present embodiment, unlike the above embodiments, the connection portion 63 slightly protrudes from the partition wall 60 toward the discharge cells in the longitudinal direction of the surface discharge electrode.

The protruding connecting portion 63 (“protruding portion 6
7)), the discharge spreads from the inner electrode to the outer electrode, so that it is possible to prevent the minimum sustain voltage of the outer electrode from increasing. However, this protruding part 6
Careful attention must be paid to the dimensions of 7.

FIG. 8 shows the dimensions of the portion where the connecting portion 63 protrudes from the partition wall 60, the delay of the current peak (the time difference between the first light emission discharge current peak and the later light emission discharge current peak), and the minimum sustain voltage in this embodiment. This shows the relationship. The solid line in FIG. 8 shows the relationship between the delay of the current peak and the size of the protruding portion 67, and the broken line shows the relationship between the minimum sustaining voltage and the size of the protruding portion.

Referring to FIG. 8, there is almost no effect when protrusion 67 has a dimension of 5 μm or less. If it exceeds 5 μm, it can be seen that the minimum sustain voltage decreases, and the discharge spreads from the inner electrode to the outer electrode through the protruding portion 67.

Accordingly, the delay of the current peak also gradually decreases. If it exceeds 60 μm, the discharge spreads quickly and the effect of dividing the electrodes is lost (there is no delay of the current peak). That is, the peak of the discharge current does not split, and the effect of reducing the peak current is lost. Therefore, the optimal value of the size of the protruding portion 67 is from 5 μm to 60 μm.

In the above description of the embodiment, the discharge cells are all rectangular in the direction perpendicular to the surface discharge electrodes. However, the present invention is not limited to such discharge cells. It can be applied to discharge cells of various shapes such as a circle, a square, and a hexagon. However, in order to obtain the effects described in the above embodiment in the best mode,
It is preferable to use a rectangular-shaped discharge cell that can sufficiently secure a gap between the divided surface discharge electrodes. As described above, the present invention has been described with reference to the above embodiments. However, the present invention is not limited to the above embodiments, but includes various embodiments according to the principle of the present invention.

[0070]

As described above, according to the plasma display panel of the present invention, the discharge current of light emission can be separated into a plurality of peaks. As a result, according to the present invention, the peak current can be greatly reduced to 以下 or less. Therefore, according to the present invention, the current capacity required for the driving circuit of the plasma display panel can be greatly reduced, and the cost can be significantly reduced. According to a preferred aspect of the present invention, the discharge current can be more efficiently dispersed and the minimum maintenance voltage can be set to be optimal. Further, even when the connecting portion connecting the plurality of divided surface discharge electrodes is configured to protrude toward the discharge cell side by a predetermined dimension, the optimization of the minimum sustain voltage can be achieved while dispersing the peak of the discharge current.

[Brief description of the drawings]

FIG. 1 is a plan view for explaining a first embodiment of the present invention.

FIG. 2A is a waveform diagram showing a current waveform of a conventional example. FIG. 3B is a waveform chart showing a current waveform according to the first embodiment of the present invention.

FIG. 3 is a plan view for explaining a second embodiment of the present invention.

FIG. 4A is a waveform diagram showing a current waveform according to the first embodiment of the present invention. (B) is a waveform chart showing a current waveform of the second example of the present invention.

FIG. 5 is a graph showing a relationship between a gap between divided surface discharge electrodes, a current peak delay, and a minimum sustain voltage in the second embodiment of the present invention.

FIG. 6 is a plan view for explaining a third embodiment of the present invention.

FIG. 7 is a plan view for explaining a fourth embodiment of the present invention.

FIG. 8 is a graph showing the relationship between the size of the protruding portion and the current peak delay and the minimum sustain voltage in the fourth embodiment of the present invention.

FIG. 9 is a plan view illustrating a conventional plasma display panel.

FIG. 10 shows a conventional plasma display panel (FIG. 9).
FIG. 3 is a view showing a cross section (along line AA ′ of FIG. 3).

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Partition 2 Scanning electrode 3 Sustain electrode 4 Connection part 5 Opening 6 Surface discharge gap 7 Bus electrode 8 Discharge cell 20 Displacement current 21 Discharge discharge current 22 Displacement current 23 Discharge current 24 Discharge current 24 Discharge current 30 Discharge 30 Partition 31 Scan electrode Reference Signs List 32 sustain electrode 33 connecting part 34 opening 35 surface discharge gap 36 discharge cell 37 bus electrode 40 displacement current 41 emission discharge current 42 emission discharge current 43 displacement current 44 emission discharge current 45 emission discharge current 50 partition 51 scanning electrode 52 Sustain electrode 53 Connection part 54 Opening 55 Surface discharge gap 56 Discharge cell 57 Bus electrode 60 Partition 61 Scan electrode 62 Sustain electrode 63 Connection part 64 Opening 65 Surface discharge gap 66 Discharge cell 67 Protruding part 70 Partition 71 Maintain scan electrode 72 Electrode 73 Surface discharge cell 74 Discharge cell 80 Front Substrate 81 Transparent electrode 82 Bus electrode 83 Transparent insulating layer 84 Protective layer 85 Black partition 86 White partition 87 White insulating layer 88 Data electrode 89 Phosphor 90 Back substrate 91 Discharge gas space

Claims (11)

(57) [Claims] 1. An AC surface discharge type plasma display panel, wherein at least one surface discharge electrode of the surface discharge electrode pair is divided into a plurality of lines in a longitudinal direction, and is divided at least in a discharge cell region.
Multiple surface discharge electrodes are connected to a plasma display panel
In the display area of the
And the discharge current of the light emission is divided within the discharge cell region.
Corresponding to the plurality of surface discharge electrodes.
Having a click, and wherein the plasma display panel. 2. The method of claim 1, wherein said connection defines a discharge cell.
And a partition wall formed in a direction orthogonal to the surface discharge electrode
2. The plasma display panel according to claim 1, wherein the plasma display panels overlap each other . 3. The method according to claim 1, wherein the connecting portion is narrower than a width of the partition wall.
3. The semiconductor device according to claim 2, wherein the discharge cells are formed outside the discharge cells.
The plasma display panel as described in the above. 4. The semiconductor device according to claim 1 , wherein both the surface discharge electrode and the connection portion are transparent.
Formed from bright electrodes, and the bus electrode was divided into the plurality
The position of the surface discharge electrode farthest from the surface discharge gap
2. The plasma display panel according to claim 1 , wherein said plasma display panel is formed on said surface discharge electrode . 5. The plurality of divided surface discharge electrodes
The width of the surface discharge electrode located on the side near the surface discharge gap is
The width of the surface discharge electrode located far from the surface discharge gap
2. The plasma display panel according to claim 1, wherein the value does not exceed . 6. The space between said plurality of divided surface discharge electrodes is
Is a between 30μm to 200μm and wherein Rukoto
The plasma display panel according to claim 1 . 7. The plurality of divided surface discharge electrodes
Between surface discharge electrodes located far from the surface discharge gap
A surface discharge in which the distance is closer to the surface discharge gap
2. The plasma display panel according to claim 1, wherein a distance between the electrodes is not exceeded . 8. The connection portion is separated from the partition wall by a predetermined dimension.
It is formed so that it protrudes into the electric cell.
The plasma display panel according to claim 2, wherein 9. The semiconductor device according to claim 1 , wherein said connecting portion has a predetermined size of 5 μm.
that it was formed to protrude from the
9. The plasma display panel according to claim 8, wherein: 10. The discharge cell according to claim 1, wherein the discharge cell is located
Formed into a rectangular shape with long sides
The plasma display panel according to claim 1, wherein: 11. Each of the plurality of divided surface discharge electrodes
The pole width is far from the surface discharge electrode closer to the surface discharge gap
And gradually increasing the distance between the plurality of divided surface discharge electrodes,
Gradiently narrow from the side closer to the discharge gap to the side farther
The plasma display panel according to claim 1, wherein: