JP2001283735A - Plasma display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide, as to a plasma display device, a method for reducing a manufacturing cost by applying a two-electrode structure and for making a positioning easier between a substrate of a front side and a substrate of a back side. SOLUTION: This device is equipped with the following components: one side substrate and the other side substrate arranged to be facing each other, a stripe-like first electrode arranged on the one side substrate, a stripe-like second electrode arranged on the first electrode in a direction crossing with the first electrode through an insulating layer, a first and a second protruding portions respectively ejected from the first and the second electrodes for generating a phase discharge in the bit area made around the crossed portion of the first and the second electrodes, a barrier wall made to be overlapping horizontally with either the first or the second electrode on the other substrate, and a phosphor layer prepared in a ditch between the barrier walls.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display device, and more particularly, to an AC type plasma display device suitably used for a display device such as a personal computer, a workstation or a home television.

[0002]

2. Description of the Related Art In an AC type plasma display device, an electrode is covered with a dielectric layer or the like, and charges are accumulated on the dielectric layer to form wall charges to control discharge.
This is a device that displays an image by exciting a phosphor with ultraviolet rays generated by electric discharge.

As the AC type plasma display device, a plasma display device generally called a three-electrode surface discharge type will be described as an example. This plasma display device includes a front substrate and a rear substrate, and first and second display electrodes for performing surface discharge of light emitting display are provided on the inner surface of the front substrate in a horizontal direction. It is installed in parallel with. On the inner surface of the rear substrate, address electrodes (data electrodes) are provided so as to be orthogonal to the above-mentioned electrodes, and partition walls for partitioning the electrodes are arranged between the address electrodes.

At the time of display, an address electrode and a first electrode are used.
A discharge for an address for designating a cell to emit light is generated between the electrodes. Then, following the discharge, a surface discharge is generated between the first and second electrodes to maintain the light emission of the cell, thereby performing display light emission.

[0005]

However, the above-described plasma display device having a three-electrode structure has a problem that the manufacturing cost is increased due to the large number of electrodes.

The present invention has been made in view of such circumstances, and has as its object to provide a plasma display device in which the manufacturing cost is reduced by using a two-electrode structure for the electrodes.

[0007]

SUMMARY OF THE INVENTION The present invention is directed to one and the other substrates, a first stripe-shaped electrode disposed on one substrate, and an insulator disposed on the first electrode. A second electrode having a stripe shape arranged in a direction intersecting with the first electrode via a layer, and generating a surface discharge in a pixel region defined near an intersection of the first and second electrodes. First
And first and second protrusions respectively protruding from the second electrode, and a partition provided on the other substrate so as to overlap with one of the first and second electrodes in a plane. And a phosphor layer provided in a groove between the partition walls.

According to the present invention, the manufacturing cost can be reduced by adopting a two-electrode structure of the first electrode and the second electrode.

In the present invention, as the one and the other substrates, substrates such as glass, quartz, silicon and the like, and desired components such as electrodes, insulating films, dielectric layers, protective films, etc. are formed on these substrates. Substrate included. The substrate disposed on the front side needs to be transparent, but the substrate disposed on the rear side does not need to be transparent.

The materials and forming methods of the first electrode and the second electrode are not particularly limited, and any of the materials and forming methods known in the art can be applied. Examples of the material for these electrodes include transparent materials such as ITO, SnO ₂ , and ZnO, materials having a laminated structure of Cr / Cu / Cr,
For example, a metal material such as g can be used. As a method for forming the electrode, an evaporation method or a sputtering method can be applied.

As a material and a forming method of the insulator layer interposed between the first electrode and the second electrode, a material and a forming method known in the art can be applied. As a material for the insulator, for example, low-melting glass, ceramic, or the like can be used. The insulator layer can be formed, for example, by applying a paste-like material obtained by adding a binder to the above-described material by a screen printing method or the like and firing it.

The first and second protruding portions are protruded from the first and second electrodes, respectively, near the intersection of the first and second electrodes, and the first and second protruding portions are provided. Any shape can be used as long as surface discharge can be generated between it and its shape,
The form of connection with the electrode, the material, and the method of formation are not particularly limited. The shape may be any shape such as a rectangle, a triangle, a semicircle, a T-shape, and an inverted T-shape. The connection form with the electrode may be a form directly connected to the electrode, or a form connected to a branch electrode extending from the electrode. The material of the protrusion is preferably transparent when the first and second electrodes are provided on the front substrate, and the transparent material may be a material known in the art, such as IT.
O, SnO ₂ , ZnO and the like can be used. The protruding portion can be formed by applying the same forming method as the first and second electrodes. First protrusion and second
The area where the surface discharge is generated between the projections is a pixel area.

The partition wall is provided on the other substrate so as to overlap with one of the first and second electrodes in a plane. This is to prevent surface discharge at the intersection of the first and second electrodes, so that surface discharge is generated between the first protrusion and the second protrusion. The material and the forming method of the partition are not particularly limited, and a material and a forming method known in the art can be applied. As a material of the partition wall, for example, a low-melting glass powder, a low-melting glass paste made of a filler such as ceramic, a binder, and a solvent can be used. Examples of the method for forming the partition include a screen printing method and a sand blast method. Specifically, this partition wall is formed by printing the partition wall shape by screen printing using the above partition wall material and baking it, or by applying the above partition wall material to a substrate, drying it, and cutting it into a partition wall shape by sandblasting. It can be formed by firing.

The phosphor layer may be provided in the groove between the partition walls. The phosphor material used for this phosphor layer is
There is no particular limitation, and materials known in the art can be used. Further, as a method for forming the phosphor layer, a method known in the art can be applied. Specifically, for example, this phosphor layer, after applying a paste containing a known phosphor powder in a groove between the partition walls by a screen printing method or the like,
It can be formed by firing.

In the above-described plasma display device, the second electrode is closer to the discharge space than the first electrode. Therefore, in order to reliably generate the first discharge for display, the second electrode is required. It is desirable to use these electrodes for scanning.

Further, since the second electrode is closer to the discharge space than the first electrode, the surface discharge generated from the first projection toward the second projection and the surface discharge generated from the second projection are There is a possibility that the electric field formed in the discharge space differs from the surface discharge generated toward the first protrusion. Therefore, from that viewpoint, when a discharge for display is generated, the second
It is desirable to apply a higher voltage to the first electrode than to the first electrode.

[0017]

Embodiments of the present invention will be described below with reference to the drawings based on embodiments. Note that the present invention is not limited by this.

FIG. 1 is a perspective view showing one embodiment of the display panel of the plasma display device of the present invention. In this figure, a part of the panel is shown in an exploded manner. As shown in this figure, the display panel of the present plasma display device includes a front substrate 1 made of transparent glass or resin and a rear substrate 5 made of glass or resin.

On the inner surface of the substrate 1 on the front side, a plurality of first
Are arranged in parallel in the vertical direction, and the first electrode 7
A first discharge electrode portion 9 for generating a discharge protrudes from each cell. Then, the insulator layer 2 is formed thereon, and the plurality of second electrodes 6 are formed on the insulator layer 2.
Are arranged in parallel in a direction orthogonal to the first electrode 7, and a second discharge electrode portion 8 for generating discharge protrudes from the second electrode 6 for each cell.

The second electrode 6, which is also used as a scanning electrode, is mainly used as an electrode for generating a sustain (sustain) discharge for maintaining the light emission of the cell. Therefore, hereinafter, the second electrode 6 is referred to as a sustain electrode 6, and the second discharge electrode unit 8 is referred to as a sustain discharge electrode unit 8.

The first electrode 7 is also used as a sustain electrode, but is mainly used as an electrode (also called a data electrode) for generating an address discharge for designating a cell to emit light. Therefore, hereinafter, the first electrode 7 is referred to as an address electrode 7, and the first discharge electrode unit 9 is referred to as an address discharge electrode unit 9.

The sustain electrode 6 and the address electrode 7
It is formed using a material such as Ag or a laminated structure of Cr / Cu / Cr. The sustain discharge electrode portion 8 and the address discharge electrode portion 9 are made of a transparent material such as ITO or SnO ₂ .

A dielectric layer 3 and a protective film 4 made of MgO are formed on the sustain electrode 6 and the sustain discharge electrode portion 8. Hereinafter, the dielectric layer 3, the dielectric layer 3 and the protective film 4 are formed. May be simply referred to as a dielectric layer).

The insulator layer 2 and the dielectric layer 3 are substantially the same except that the name changes depending on the required function. The insulating layer 2 and the dielectric layer 3 are formed by applying a paste-like material obtained by adding a binder to an insulating material or a dielectric material such as low-melting glass or ceramic or the like and baking it.

On the other hand, a partition 10 for partitioning the discharge space into an elongated space along the address electrode 7 is provided on the inner surface of the rear substrate 5 so as to face the address electrode 7. In the elongated space partitioned by the partition 10,
The phosphor layer 11 is formed including the wall surface of the partition wall 10 and the upper surface of the rear substrate 5. The partition 10 is disposed at a position overlapping with the address electrode 7 in plan view, and the sustain discharge electrode portion 8 and the address discharge electrode portion 9 are formed by the partition 10 and the partition 1.
It is arranged to define a cell between zero and zero.

The front substrate 1 and the rear substrate 5 are aligned with the partition and the electrode as described above, and the periphery thereof is sealed. The discharge space surrounded by the partition 10 contains neon or xenon. Gas.

Although the insulator layer 2 is provided on the entire surface of the substrate 1 on the front side, it may be provided not on the entire surface but only at the intersection of the address electrode 7 and the sustain electrode 6. Further, the shapes of the sustain discharge electrode portion 8 and the address discharge electrode portion 9 are shown as strips, but this is merely an example and other shapes may be used. Further, the dielectric layer 3 may not be particularly required in some cases.

FIG. 2 is an explanatory view showing the arrangement of electrodes when the display panel shown in FIG. 1 is viewed in plan. As shown in this figure, the address electrode 7 is arranged so as to overlap the partition wall 10 in plan view, and the sustain discharge electrode portion 8 and the address discharge electrode portion 9 define a cell between the partition wall 10 and the partition wall 10. Are arranged as follows.

FIG. 3 is an explanatory view showing a section taken along line III-III of FIG. 2, and FIG. 4 is an explanatory view showing a section taken along line IV-IV of FIG. In these figures, one cell S is shown. The cells S are defined in the horizontal direction by the partition walls 10, but in the vertical direction, the cells S are connected by a discharge space.

FIG. 5 is an explanatory diagram showing a connection state between the electrodes of the display panel shown in FIG. 1 and the driving circuit. In this figure, 20 is a display panel, 21 is a sustain drive circuit for applying a voltage to the sustain electrode 6, and 22 is an address electrode 7
Is an address driving circuit that applies a voltage to the address driving circuit.

As shown in this figure, the sustain electrode 6 is connected to a sustain drive circuit 21 and the address electrode 7 is connected to an address drive circuit 22, and a voltage is applied by each circuit.

The sustain electrodes 6 and the address electrodes 7 are pulled out from one side of the front substrate 1 and connected to a sustain drive circuit 21 and an address drive circuit 22, respectively. In order to widen the electrode interval, these electrodes may be drawn out not only from one side of the panel but also from both sides in a skewered shape in view of the accuracy of attachment. In that case, the sustain drive circuit 21 and the address drive circuit 22 are also arranged on both sides of the panel.

FIG. 6 is an explanatory view showing a gradation display method of the present plasma display device. This figure shows a period for displaying one image. This period is usually 1
Although this is called a frame, one frame may be composed of a plurality of fields, so that this period will be described below as one field. The figure shows a typical method of gradation display. In order to obtain a good image quality by applying the method to an actual display panel, a voltage may be applied in finer intervals.

The method of gray scale display of the present plasma display device includes a well-known method commonly used in the art.
That is, the method used in the three-electrode surface discharge type plasma display device is applied. The only difference is that it is done with two electrodes.

In brief, one field f is
Weight 1: 2: 4: 8: 16: 32: 64: 128
8 subfields sf (with different periods)₁, s
f_Two, sf_Three, sf_Four, sf_Five, sf₆, sf₇, sf₈Composed of
You. Also, each subfield sf _nConfigure the screen
Wall charge on the dielectric layer (protective film) corresponding to all cells
Preparation period TR for uniform state (almost zero state), light emission
To form wall charges on the dielectric layer corresponding to the cell
During the storage period TA, the light emission of the cell having the wall charges is maintained.
It consists of a sustain period TS.

AC such as the present plasma display device
In the mold, a method of storing wall charges on a dielectric layer on an electrode defining a cell is used in order to specify a cell to emit light or to perform light emission display. The main part of accumulating the wall charges is on the dielectric layer on the sustain discharge electrode section 8 and on the dielectric layer on the address discharge electrode section 9, and a discharge is generated between these discharge electrode sections.

First, in the preparation period TR, a surface discharge (reset discharge) is generated between the sustain discharge electrode portions 8 and the address discharge electrode portions 9 of all the cells, and the wall charges of all the cells are reduced to a predetermined uniform. State (almost zero state). Then, in the address period TA, the sustain pulse is applied to the address electrode 7 in synchronization with the scan pulse by applying the scan pulse line-sequentially by using the sustain electrode 6 as the scan electrode, so that the sustain discharge of the cell to emit light is performed. A surface discharge (address discharge) is generated between the electrode section 8 and the address discharge electrode section 9 to form a wall charge in the selected cell. Then, in the sustain period TS, a surface discharge (display discharge) between the sustain discharge electrode portion 8 and the address discharge electrode portion 9 by a sustain pulse of a low voltage such that a discharge is generated only in the cell in which the wall charge is formed. ) Are alternately generated to maintain the light emission of the cell.

The length of the sustain period TS in the sub-field sf _n is different depending on the weight of the subfield sf _n, the sustain period TS, between the sustain electrode 6 and address electrodes 7, the sustain discharge Are applied in a weighted number. Therefore, by selecting the sub-fields sf _n light emission sustain number of times corresponding to the luminance, it is possible to express the gradation of an image to be displayed.

FIG. 6 shows an example in which subfields sf _n are arranged in ascending order of the number of sustain pulses.
The arrangement order of the subfields sf _n can be arbitrarily changed.

In the above description, an address discharge for generating a wall charge in a cell to emit light in the address period TA has been described. This is an example of a case where a so-called writing method is used to specify a cell to emit light. After all the cells are discharged to form wall charges in all the cells, address discharge is performed to erase the wall charges of the cells that do not want to emit light. You may make it.

FIGS. 7A and 7B show voltage waveforms applied to the sustain electrode and the address electrode in one subfield. Note that the figure shows an example of a waveform, and another waveform may be applied in order to obtain a good image quality by applying the waveform to an actual display panel.

FIG. 7A shows a voltage waveform applied to one sustain electrode 6, and FIG. 7B shows a voltage waveform applied to one address electrode 7.

In the preparation period TR, a reset pulse 41 having a voltage higher than the discharge start voltage is simultaneously applied to all the sustain electrodes 6. In the address period TA, a scan pulse 42 is sequentially applied to the sustain electrode 6, and an address pulse 43 for cell designation is applied to the address electrode 7 during that time. In the sustain period TS, the sustain pulse 44 having the same voltage waveform is alternately applied to the sustain electrode 6 and the address electrode 7. Note that the ground potential (GND) is a reference potential of the present plasma display device.

The voltage application during each period and the state of the associated wall charges will be described. In the preparation period TR, the reset pulse 41 applied to the sustain electrode 6 erases the wall charges accumulated on the dielectric layer of the cell emitting light in the previous subfield, and places all cells in a uniform wall charge state. (Approximately zero). When the reset pulse 41 is applied, a large discharge is generated between the sustain discharge electrode portion 8 and the address discharge electrode portion 9 at the rise of the reset pulse 41, and after a large amount of wall charges are formed, an electric field is generated by the large amount of wall charges. Then, the potential difference exceeds the discharge starting voltage, causing a so-called self-erasing discharge. Thereby, the wall charges on the dielectric layer and the phosphor layer near the electrodes are neutralized and erased in the space, and as a result, the charges in the cell become almost zero.

After the application of the reset pulse 41, the scan pulse 42 is applied to the sustain electrode 6 during the address period TA. When the address pulse 43 is applied to the address electrode 7 during this application, a write discharge (address discharge) for cell designation occurs in the cell corresponding to the intersection of the sustain electrode 6 and the address electrode 7. In the address period TA, a negative voltage with respect to the ground potential is applied to the sustain discharge electrode portion 8 and a positive voltage with respect to the ground potential is applied to the address discharge electrode portion 9. A positive wall charge on the dielectric layer near the electrode portion 8;
Negative wall charges are accumulated on the dielectric layer near the address discharge electrode section 9. This cell becomes a light emitting cell.

On the other hand, when the scan pulse 42 is applied to the sustain electrode 6, if the address electrode 7 is at the ground potential, no write discharge occurs, so that no wall charge is accumulated and the cell becomes a non-light emitting cell.

In the sustain period TS, when the first pulse of the sustain pulse 44 is applied to the sustain electrode 6, the effective voltage obtained by adding the potential difference formed by the wall charges accumulated by the discharge in the address period TA and the sustain voltage V1. A voltage difference occurs in the discharge space. If the sustain voltage V1 is set so that the effective voltage difference is equal to or higher than the discharge start voltage V2, the first discharge in the sustain period TS occurs. As an example, the sustain voltage V1 is set to 170 V and the discharge start voltage V
2 may be set to 220V.

However, in the display panel of the present plasma display device, the thickness of the dielectric layer on the electrodes differs between the sustain discharge electrode portion 8 and the address discharge electrode portion 9. That is, the distance between the sustain discharge electrode portion 8 and the discharge space is different from the distance between the address discharge electrode portion 9 and the discharge space.
Even if the same voltage is applied to each electrode, the electric field actually formed in the discharge space may be biased. Therefore,
By applying voltages of different values to the sustain electrode 6 and the address electrode 7, the operation margin is widened.

FIGS. 8A and 8B are explanatory diagrams showing voltage waveforms when different voltages are applied to the sustain electrode and the address electrode during the sustain period. FIG.
(A) shows a voltage waveform applied to the sustain electrode 6,
FIG. 8B shows a voltage waveform applied to the address electrode 7.

In the sustain period TS, the sustain electrode 6
Since the distance from the sustain discharge electrode portion 8 to the discharge space is relatively short, a pulse of a low voltage V3 is applied to the address electrode 7, and the distance from the address discharge electrode portion 9 to the discharge space is relatively long to the address electrode 7. Therefore, a pulse of a high voltage V4 is applied. That is, V3> V4. As a result, the operation margin can be increased, and the yield of the display panel can be improved.

In the above description, different voltages are applied to the sustain electrode and the address electrode. However, the material of the dielectric layer on the sustain discharge electrode section 8 and the material of the dielectric layer on the address discharge electrode section 9 are different. May be different. That is, the dielectric layer on the sustain discharge electrode portion 8 having a relatively short distance to the discharge space is formed of a material having a high dielectric constant, and the dielectric layer on the address discharge electrode portion 9 having a relatively long distance to the discharge space is formed. The layer may be formed of a material having a low dielectric constant. By making the material of the dielectric layer different in this way, the same voltage may be applied to both electrodes to obtain the same amount of discharge light emission.

In the above display panel, it is desirable that the partition 10 is formed of a transparent material. Thereby, visible light generated from the phosphor layer formed on the side surface of the partition wall 10 can be extracted through the partition wall 10, and a display panel with higher luminance and higher luminous efficiency can be obtained.

Next, another embodiment of the present invention will be described. FIG. 9 is a perspective view showing an example of a display panel in which a sustain electrode and an address electrode are formed on a rear substrate. In this figure, a part of the panel is shown in an exploded manner.

In this embodiment, as in the previous embodiment, a display panel is made of a transparent glass or resin front substrate 85.
It is composed of a substrate 81 on the back side made of glass or resin,
Contrary to the previous embodiment, electrodes are formed on the rear substrate 81, and partition walls and phosphor layers are formed on the front substrate 85.

That is, a plurality of address electrodes 87 are vertically arranged in parallel on the inner surface of the rear substrate 81, and an address discharge electrode portion 89 for generating a discharge from the address electrodes 87 is provided for each cell. It is projected to.
Then, an insulator layer 82 is formed thereon, and a plurality of sustain electrodes 86 are arranged on the insulator layer 82 in parallel in a direction orthogonal to the address electrodes 87, and discharge is generated from the sustain electrodes 86. Sustain discharge electrode portions 88 project for each cell.

On the sustain electrode 86 and the sustain discharge electrode portion 88, a dielectric layer 83 and a protective film 84 made of MgO are formed.

On the other hand, a partition wall 90 for partitioning the address electrodes 87 is provided on the inner side surface of the substrate 85 on the front side in parallel with the address electrodes 87. A phosphor layer 91 is formed on the wall surface of the partition wall 90 and the upper surface of the substrate 85 on the front side.
The partition wall 90 is arranged at a position overlapping the address electrode 87 in plan view, and the sustain discharge electrode section 88 and the address discharge electrode section 89 are arranged so as to define a cell between the partition wall 90 and the partition wall 90.

Address electrode 87, address discharge electrode section 8
9. Sustain electrode 86 and sustain discharge electrode section 88
Can all be formed of opaque materials. The partition wall 90 is desirably formed of a transparent material. It is preferable that the dielectric layer 83 be made of a material having a high reflectance with respect to ultraviolet rays. Similarly, the address electrode 8
7. It is preferable that the address discharge electrode portion 89, the sustain electrode 86, and the sustain discharge electrode portion 88 also be made of a material having a high reflectance with respect to ultraviolet rays. In driving for display, a driving method similar to that of the above embodiment is applied.

Although the insulator layer 82 is provided on the entire surface of the substrate 81 on the back side, it may be provided not on the entire surface but only at the intersection of the address electrode 87 and the sustain electrode 86.

In the above-described two embodiments, the sustain electrode of the address electrode and the sustain electrode is arranged at a position close to the discharge space. However, the arrangement may be reversed. In driving, a higher voltage may be applied to the electrode far from the discharge space.

As described above, the display panel has a two-electrode structure, and a voltage is applied to each electrode in accordance with the structure at the time of display, whereby a plasma display device can be manufactured with a simple structure. , High yield can be realized.

[0062]

According to the present invention, the cost can be reduced by reducing the number of electrodes.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a display panel of a plasma display device of the present invention.

FIG. 2 is an explanatory diagram showing an electrode arrangement in a state where the display panel of the embodiment is viewed in plan.

FIG. 3 is an explanatory view showing a section taken along line III-III of FIG. 2;

FIG. 4 is an explanatory diagram showing a cross section taken along line IV-IV of FIG. 2;

FIG. 5 is an explanatory diagram illustrating a connection state between an electrode of a display panel and a driving circuit according to the embodiment.

FIG. 6 is an explanatory diagram showing a method of gradation display of the plasma display device of the embodiment.

FIG. 7 is a waveform diagram showing voltage waveforms applied to a sustain electrode and an address electrode in one subfield in the plasma display device of the embodiment.

FIG. 8 is a waveform diagram showing voltage waveforms when different voltages are applied to the sustain electrode and the address electrode during the sustain period in the plasma display device of the example.

FIG. 9 is a perspective view showing an example of a display panel in which a sustain electrode and an address electrode are formed on a rear substrate.

[Explanation of symbols]

 Reference Signs List 1,81 Front substrate 2,82 Insulator layer 3,83 Dielectric layer 4,84 Protective film 5,85 Back substrate 6,86 Sustain electrode 7,87 Address electrode 8,88 Sustain discharge electrode part 9, 89 Address discharge electrode section 10, 90 Partition wall 11, 91 Phosphor layer 21 Sustain drive circuit 22 Address drive circuit

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kenichi Yamamoto 3-2-1 Sakado, Takatsu-ku, Kawasaki-shi, Kanagawa Prefecture Fujitsu Hitachi Plasma Display Limited In-house (72) Inventor Akihiko Kogami 3-chome Sakado, Takatsu-ku, Kawasaki-shi, Kanagawa No. 2 Fujitsu Hitachi Plasma Display Limited In-house F-term (reference) 5C040 FA01 FA04 GB04 GC02 GC05 GC06 MA14 MA22

Claims (3)

[Claims] A first electrode disposed on one of the substrates, a first electrode in a stripe shape disposed on the one substrate, and a first electrode disposed on the first electrode with an insulating layer interposed therebetween. A second electrode in the form of a stripe arranged in a direction intersecting the first and second electrodes; and a first and second electrode for generating a surface discharge in a pixel region defined near the intersection of the first and second electrodes. First and second projections respectively protruding from the first and second electrodes; and a partition provided on the other substrate so as to planarly overlap with one of the first and second electrodes. A plasma display device comprising: a phosphor layer provided in a groove. 2. The plasma display device according to claim 1, wherein the second electrode is used for scanning. 3. The plasma display apparatus according to claim 1, wherein a higher voltage is applied to the first electrode than to the second electrode when generating a discharge for display.