JP2000352934A - Plasma discharge device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plasma discharge device capable of efficiently radiating the heat which a plasma display panel 1 generates while making the best use of structural feature thereof. SOLUTION: This plasma discharge device is provided with a plasma display panel 1, a transparent substrate 2 which is separately disposed on the front surface of the plasma display panel 1 and a sealing part 3 which is formed by sealing the periphery of the plasma display panel 1 and the transparent substrate 2 with sealing material. Therein, coolant is enclosed into a coolant enclosing space 8 which is surrounded by the plasma display panel 1, the transparent substrate 2 and the sealing part 3, and a bracket 4 extending outward from the coolant enclosing space 8 is disposed. When the plasma display panel 1 is operated, the temperature on the front plate 1F of the plasma display panel 1 rises and thereon, even if the partial temperature difference is generated in the front plate 1F, the partial temperature difference is reduced owing to the convection of the coolant in the coolant enclosing space 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma discharge device, and more particularly, to a plasma discharge device having a heat radiating means for efficiently radiating heat generated when a plasma display panel operates.

[0002]

2. Description of the Related Art Generally, a plasma display panel is divided into a direct current (DC) type plasma display panel and an alternating current (AC) type plasma display panel according to the arrangement of address electrodes and display electrodes for driving each plasma discharge cell. And a hybrid plasma display panel in which a DC type and an AC type are combined.

[0003] Among them, the AC type plasma display panel has a memory function using wall charges of each plasma discharge cell. For example, the AC type plasma display panel includes a first glass substrate serving as a front plate and a back plate. A plurality of plasma discharge cells sealed with a discharge gas are formed between the first glass substrate and the second glass substrate, and a dielectric layer is formed on the surface of the first glass substrate on the side of the plasma discharge cells in association with each plasma discharge cell. And a display electrode and a first address electrode are disposed in parallel with each other, and a display electrode and a first address electrode are provided on the surface of the second glass substrate on the side of the plasma discharge cell in association with each plasma discharge cell. The second address electrodes are arranged so as to be orthogonal to.

In operation of the AC type plasma display panel, first, an address discharge, which is an initial discharge, is generated between the first address electrode and the second address electrode to charge the surface of the dielectric layer. Thereafter, by utilizing the charged electric charges, a plasma discharge is selectively generated between the display electrode and the first address electrode to perform a required image display.

Incidentally, the AC plasma display panel, the DC plasma display panel, and the hybrid plasma display panel each have a thin structure and can form a large display screen. It is. These plasma display panels generate a lot of heat by plasma discharge when displaying an image.

[0006]

In the known plasma display panel, since the front plate constitutes an image display surface, it is difficult to dispose an opaque member on the front plate side, and to maintain a thin structure. In addition, since a driving circuit for selectively driving each plasma discharge cell is arranged in close contact with the back plate side, it is extremely difficult to provide a heat radiation means for dissipating heat generated by the plasma discharge. Was.

[0007] The plasma display panel has
If there is no means for efficiently dissipating the heat generated by the plasma discharge, when forming a large display screen,
When the temperature difference between the parts of the plasma display panel increases, the temperature difference causes cracks in the front and back plates, or in the worst case, cracks. Not only does the luminous efficiency of the light body decrease, but also heat is generated due to an increase in the wiring resistance of each part, which increases the temperature of the plasma display panel and increases the total power consumption of the plasma display panel.

[0008] As described above, in the known plasma display panel, the front plate and the back plate are damaged by heat generated by the plasma discharge, and the life thereof is shortened.
There is a problem that luminous efficiency is reduced and power consumption is increased.

SUMMARY OF THE INVENTION The present invention solves such a problem, and an object of the present invention is to provide a plasma discharge device capable of efficiently radiating heat generated by a plasma display panel while taking advantage of its structural features. To provide.

[0010]

In order to achieve the above object, a plasma discharge apparatus according to the present invention comprises a plasma display panel, a transparent substrate spaced apart from a front surface of the plasma display panel, and a plasma display panel and a transparent substrate. It has a sealing portion whose periphery is sealed with a sealing material, and has means for charging a refrigerant in a refrigerant charging space surrounded by the plasma display panel, the transparent substrate, and the sealing portion.

According to the above-mentioned means, when the temperature of the front plate is partially increased by the heat generated by the plasma discharge during the operation of the plasma display panel, the plasma display panel is surrounded by the transparent substrate and the sealing portion. The refrigerant enclosed in the enclosed refrigerant space causes convection, which acts to equalize the temperature distribution on the front panel side of the plasma display panel and to eliminate the temperature difference between the parts of the plasma display panel. No cracking or cracking of the face plate or back plate.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In a preferred embodiment of the present invention, a plasma discharge device comprises a plasma display panel, a transparent substrate spaced apart from the front surface of the plasma display panel, and a sealing material for surrounding the plasma display panel and the transparent substrate. And a refrigerant sealed in a refrigerant sealed space surrounded by the plasma display panel, the transparent substrate, and the sealed part.

In a specific example of the embodiment of the present invention, in the plasma discharge device, the refrigerant is a mixed liquid of ethylene glycol and pure water, and the content ratio of ethylene glycol is 70%.
To 90% by weight.

In another first embodiment of the present invention,
In the plasma discharge device, a sealing portion holds a bracket extending from the inside of the coolant enclosing space to the outside.

In a specific example of another embodiment of the present invention, the bracket of the plasma discharge device is made of aluminum die-cast.

In another second embodiment of the present invention,
In the plasma discharge device, the bracket has a radiation fin provided outside.

In a preferred embodiment of these embodiments of the present invention, in the plasma discharge device, the transparent substrate is made of a glass substrate.

In another preferred embodiment of these embodiments of the present invention, in the plasma discharge device, the transparent substrate is made of the same glass substrate as the front glass substrate of the plasma display panel.

According to the embodiment of the present invention, refrigerant is enclosed by a plasma display panel, a transparent substrate disposed on the front side of the plasma display panel, and a sealing portion for sealing the periphery of the plasma display panel and the transparent substrate. The configuration is such that a refrigerant is sealed in the space. For this reason, even when the temperature of the front plate is partially higher than other parts due to heat generated by the plasma discharge during the operation of the plasma display panel, it is surrounded by the plasma display panel, the transparent substrate, and the sealing portion. The refrigerant enclosed in the enclosed refrigerant enclosure space causes convection, so that the temperature of each part of the front panel of the plasma display panel becomes uniform, and it works so that the temperature difference between the parts of the plasma display panel disappears. The temperature difference does not cause cracks or cracks in the front panel and the rear panel, and it is possible to avoid shortening the life of the plasma display panel.

In this case, according to another first embodiment of the present invention, the bracket extending to the outside from the refrigerant enclosing space surrounded by the plasma display panel, the transparent substrate, and the sealing portion is provided in the sealing portion. Is provided, it is possible to dissipate the heat of the refrigerant whose temperature has risen to the outside through the bracket, and the temperature of each part of the front plate of the plasma display panel is reduced and uniformized. As in the case of the embodiment, it works so as to eliminate the temperature difference between the parts of the plasma display panel, so that the heat dissipation and the reduction of the temperature difference cause the front plate and the back plate to crack or break more than the above-described embodiment. And the life of the plasma display panel can be prevented from being shortened.

According to another second embodiment of the present invention, a bracket extending to the outside from a refrigerant enclosing space surrounded by a plasma display panel, a transparent substrate, and a sealing portion is provided in the sealing portion. Since the heat radiation fins are provided on the outer side of the bracket, the heat of the refrigerant whose temperature has risen can be effectively radiated to the outside through the brackets and the heat radiation fins. Since the temperature of each part is further lowered and made uniform, and similarly to the above-described embodiments, the temperature difference between the parts of the plasma display panel works so as to be eliminated.
By dissipating much heat and reducing the temperature difference, the front panel and the rear panel are no longer cracked or cracked as compared with the other first embodiment described above, and the life of the plasma display panel is extended. Shortening can be avoided.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 are diagrams showing the structure of a first embodiment of the plasma discharge device according to the present invention.
Is an exploded perspective view, and FIG. 2 is a sectional view thereof.

1 and 2, 1 is a plasma display panel, 1F is a front plate, 1B is a back plate, 2 is a transparent substrate, 3 is a sealing material, 3U is an upper frame, 3D is a lower frame, 4 is a bracket, 4H is a coolant injection hole, 5 is an O-ring, 6 is a seal screw, 7 is a spacer, and 8 is a coolant enclosing space.

Then, the plasma display panel 1
Is composed of a front plate 1F made of a transparent glass substrate, a back plate 1B made of a glass substrate, and a number of plasma discharge cells (not shown) formed between the front plate 1F and the back plate 1B. . The transparent substrate 2 is made of a transparent glass substrate made of the same material as the front plate 1F of the plasma display panel 1, and is disposed in parallel with the front plate 1F of the plasma display panel 1 while being separated therefrom. The sealing material 3 is disposed between the front plate 1F and the transparent substrate 2, seals the peripheral edges of the front plate 1F and the transparent substrate 2, and forms the refrigerant enclosing space 8 together with the front plate 1F and the transparent substrate 2. so,
It consists of an upper frame 3U and a lower frame 3D. The upper frame 3U is arranged in contact with the transparent substrate 2, and the lower frame 3D is arranged in contact with the front plate 1F. The bracket 4 has a frame shape, is disposed between the upper frame 3U and the lower frame 3D, and forms a part of the sealing material 3 together with the upper frame 3U and the lower frame 3D. . The bracket 4 is provided on the side surface with two refrigerant injection holes 4H for connecting the refrigerant enclosure space 8 to the outside. The two coolant injection holes 4H are sealed by an O-ring 5 and a seal screw 6. When forming the upper frame 3U and the lower frame 3D, four spacers 7 are respectively embedded in the four corners thereof.

FIG. 3 is an explanatory view showing an example when manufacturing the plasma discharge device of the first embodiment.

The manufacturing process of the plasma discharge device of the first embodiment will be described below with reference to the explanatory view of FIG. 3 and the exploded perspective view of FIG.

First, in step S1, the front plate 1F and the transparent substrate 2 of the plasma display panel 1 are washed to remove foreign substances and dirt adhering to the front plate 1F and the transparent substrate 2.

Next, in step S2, the four corners of the front plate 1F of the plasma display panel 1 and the transparent substrate 2
In each of the four corners, a thickness of 0.6
mm spacer 7 is adhered, dried and fixed.

In step S3, the alumite-treated aluminum die-cast bracket 4 is degreased and cleaned, and then heated in air at a temperature of 120 to 150 ° C. for about 30 minutes to clean the surface.

Then, in step S4, a predetermined amount of silicone resin-based adhesive is annularly applied to both surfaces of the bracket 4.

Subsequently, in step S5, the plasma display panel 1, the bracket 4 thereon, and the transparent substrate 2 thereon are overlaid and fixed in that state.

Next, in step S6, these fixed members are heated at a temperature of 120 ° C. for about 40 minutes to heat and cure the silicone resin-based adhesive, and the upper frame 3U and the lower frame 3D are removed. Then, the refrigerant enclosure space 8 is formed.

On the other hand, in step S7, a refrigerant which is a mixed solution of ethylene glycol and pure water and has a composition in which the content ratio of ethylene glycol is in the range of 70 to 90% by weight is prepared. Vacuum degas in low pressure.

Next, in step S8, the refrigerant enclosing space 8 is evacuated through the refrigerant injection hole 4H provided in the bracket 4, and the refrigerant liquid defoamed from the refrigerant injection hole 4H is filled with the refrigerant so that no bubbles are generated. Inject into space 8.

Finally, in step S9, the coolant injection hole 4H is closed using the O-ring 5 and the seal screw 6, and the plasma discharge device of the first embodiment is completed.

As is well known, the plasma discharge device of the first embodiment having the above-described structure selectively drives each plasma discharge cell of the plasma display panel 1 so that a required image is displayed on the display surface. Is displayed.

Such a plasma display panel 1
In the operation state of 2, the temperature of the front panel 1F and the rear panel 1H of the plasma display panel 1 increases due to heat generated by the plasma discharge, and the front panel 1F may be partially higher than other portions. Also, the refrigerant sealed in the refrigerant sealed space 8 surrounded by the plasma display panel 1, the transparent substrate 2, and the sealing portion 3 causes convection by the heat of the front plate 1F, and the front plate 1F of the plasma display panel 1 The temperature of each part of the plasma display panel 1 is made uniform. As a result, not only the front panel 1F but also the rear panel 1H of the plasma display panel 1 works so as to eliminate the temperature difference of each part. In addition, by disposing the bracket 4 extending from the coolant enclosing space 8 to the outside, the heat of the coolant whose temperature has risen is radiated to the outside through the bracket 4, so that the temperature of the coolant also decreases.

As described above, according to the plasma discharge device of the first embodiment, the front plate 1 of the plasma display panel 1
F and the rear plate 1B can be reduced in temperature, and the temperature difference between the front plate 1F and the rear plate 1B can be reduced.
F and the back plate 1H are not cracked or broken, and the life of the plasma display panel 1 can be prevented from being shortened. In addition, by lowering the temperature of the plasma display panel 1, The luminous efficiency of the phosphor can be increased, and an increase in power consumption can be avoided.

FIG. 4 is a partial configuration diagram showing the configuration of a second embodiment of the plasma discharge device according to the present invention.

In FIG. 4, reference numeral 9 denotes a radiating fin, and the same components as those shown in FIGS. 1 and 2 are denoted by the same reference numerals.

The radiating fins 9 are provided with many comb-shaped radiating portions, and are provided in an outer region of the bracket 4.

The configuration of the second embodiment is the same as that of the first embodiment except for the configuration of the outer region of the bracket 4, so that further description of the configuration of the second embodiment is omitted. .

The operation of the second embodiment is similar to that of the radiation fins 9 described above.
The operation of the above-described first embodiment, except that the increase in the heat radiation efficiency from the device makes it possible to promote a decrease in the temperature of the refrigerant, that is, a decrease in the temperature of the plasma display panel 1. Is almost the same as
Further description of the operation of the embodiment will be omitted.

As described above, according to the plasma discharge device of the second embodiment, the front plate 1 of the plasma display panel 1
F and the temperature of the rear panel 1B can be reduced more than those of the first embodiment, and the temperature of the front panel 1F and the rear panel 1B can be reduced.
The front panel 1F and the rear panel 1H do not crack or break due to the temperature difference of B, so that the life of the plasma display panel 1 can be prevented from being shortened, and the temperature of the plasma display panel 1 can be prevented. The first
Since the phosphor is much lower than that of the embodiment, the luminous efficiency of the phosphor can be further increased, and an increase in power consumption can be avoided.

In each of the above embodiments, the sealing portion 3
In the above description, the example in which the bracket 4 extending from the inside of the refrigerant enclosing space 8 to the outside is provided has been described.
If the heat radiation effect of the refrigerant is somewhat sacrificed, it is not always necessary to provide the bracket 4, and even in this case, the same effect as that of the first embodiment can be achieved.

In each of the above embodiments, the applicable plasma display panel 1 may be any one of an AC plasma display panel, a DC plasma display panel, and a hybrid plasma display panel as long as it has a thin structure. There may be.

The plasma display panel 1
With the structure shown in FIG. 5 and FIG.
Each display cell includes two display electrodes and two address electrodes, and the two display electrodes are covered by a dielectric layer, and at least one address electrode is covered by a dielectric layer. Alternatively, a display discharge tube having a four-electrode structure may be used.

Here, FIG. 5 is an exploded perspective view showing a schematic configuration of such a display discharge tube having a four-electrode structure, and FIG.
FIG. 6 is a cross-sectional view illustrating a display cell portion of the display discharge tube having the four-electrode structure illustrated in FIG. 5. FIG. 6 shows the rear glass substrate rotated by 90 ° with respect to the front glass substrate for easy understanding of the configuration.

5 and 6, 51 is a transparent front glass substrate (first substrate), 52 is a rear glass substrate (second substrate), 53 and 54 are partition walls, and 55 is two display electrodes. , 55a are display electrode mother electrodes, 55b is a display electrode transparent electrode, 56 is a first address electrode, 57 is a second address electrode, 58 is a transparent dielectric layer, and 59 is a protective film (Mg).
O) and 510 are phosphors of three primary colors (R, G, B).

The front glass substrate 51 and the rear glass substrate 52 which are opposed to each other are sealed at their peripheral portions by frit glass, and a discharge region is formed between the opposing surfaces which are slightly separated from each other. Various electrodes 55, 56, and 57 are provided in the discharge region.
And the partition walls 53 and 54 are housed, and after evacuation, a discharge gas in which helium (He), neon (Ne), argon (Ar), or the like is mixed with xenon (Xe) is sealed. .

As shown in FIG. 5, the front glass substrate 5
1, a display electrode 55 and a first address electrode 56 are arranged in parallel with each other, a transparent dielectric layer 58 is formed on the display electrode 55 and the first address electrode 56, and a protective film 5 is formed thereon.
9 are formed, and a grid-like partition wall 54 is formed on the protective film 59. On the rear glass substrate 52, a second address electrode 57 is provided with a display electrode 55 and a first address electrode 56.
The stripe-shaped barrier ribs 53 are formed in the direction in which the second address electrode 57 extends, and three color (R, G, B) phosphors 510 are provided between the stripe-shaped barrier ribs 53 in the display cell. It is applied in order every time.

As shown in FIG. 6, the front glass substrate 5
1 and the back glass substrate 52 are composed of the electrodes 55 to 57 and the partition 5
The first address electrode 56 and the second address electrode 56 are arranged facing each other such that the surface on which the third, third, etc. are formed faces inward.
It crosses the address electrode 57. First
Display cells are formed at the intersections of the address electrodes 56 and the second address electrodes 57. In each of the display cells, a display cell is selected between the first address electrode 56 and the second address electrode 57. An address discharge (selection as a display pixel) is performed, and a main discharge is performed between the two display electrodes 55 to discharge the display cell (image display).

Further, in each of the above embodiments, the example using the bracket 4 made of aluminum die casting has been described. However, the bracket 4 according to the present invention is not limited to the one made of aluminum die casting. As long as the metal has good heat radiation, another metal may be used. In this case, the configuration of the bracket 4 is not limited to the configuration described in each of the above embodiments, but can be changed as appropriate.

In each of the above embodiments, the refrigerant is a mixture of ethylene glycol and pure water, and the content of ethylene glycol is in the range of 70 to 90% by weight. However, the refrigerant according to the present invention is not limited to the refrigerant having such a composition, and may be a refrigerant having another composition.

[0056]

As described above, according to the first and second aspects of the present invention, during operation of the plasma display panel, the temperature of the front plate is partially higher than that of other portions due to heat generated by plasma discharge. Even if the temperature rises, the refrigerant enclosed in the refrigerant enclosed space surrounded by the plasma display panel, the transparent substrate, and the sealing portion causes convection, and the temperature of each part of the front plate of the plasma display panel becomes uniform. As a result, the temperature difference between the parts of the plasma display panel is eliminated, so that the temperature difference does not cause cracks or breaks in the front panel and the rear panel, thereby shortening the life of the plasma display panel. And the luminous efficiency of the phosphor can be increased, and an increase in power consumption can be avoided.

According to the third and fourth aspects of the present invention, during operation of the plasma display panel, the heat of the refrigerant whose temperature has increased is radiated outside through the bracket, and the temperature of each part of the front plate of the plasma display panel is reduced. It works to reduce the temperature difference between the parts of the plasma display panel, so that the front panel and the rear panel are not cracked or broken further by heat dissipation and reduction of the temperature difference, It is possible to avoid shortening the life of the plasma display panel, increase the luminous efficiency of the phosphor, and avoid increasing power consumption.

Further, according to the invention described in claim 5,
During the operation of the plasma display panel, the heat of the coolant whose temperature has risen is effectively dissipated to the outside through the brackets and the radiation fins. Works to eliminate the temperature difference, so that more heat is dissipated and the temperature difference is reduced, so that the front panel and the rear panel are not further cracked or broken, and the life of the plasma display panel is shortened. This is effective in that the luminous efficiency of the phosphor can be increased and an increase in power consumption can be avoided.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a configuration of a first embodiment of a plasma discharge device according to the present invention.

FIG. 2 is a sectional view showing the configuration of a first embodiment of the plasma discharge device according to the present invention.

FIG. 3 is an explanatory view showing an example when manufacturing the plasma discharge device of the first embodiment.

FIG. 4 is a partial configuration diagram showing the configuration of a second embodiment of the plasma discharge device according to the present invention.

FIG. 5 is an exploded perspective view showing a schematic configuration of a display discharge tube used for a plasma display panel of the plasma discharge device of the present invention.

6 is a cross-sectional view illustrating a configuration of a display cell of the display discharge tube illustrated in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plasma display panel 1F Front plate 1B Back plate 2 Transparent substrate 3 Sealing material 3U Upper frame 3D Lower frame 4 Bracket 4H Refrigerant injection hole 5 O-ring 6 Seal screw 7 Spacer 8 Refrigerant filling space 9 Radiation fin 51 Front glass Substrate 52 Back glass substrate 53, 54 Partition wall 55 Display electrode 55a Mother electrode 55b Transparent electrode 56 First address electrode 57 Second address electrode 58 Dielectric layer 59 Protective film 510 Phosphor

────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] August 3, 1999 (1999.8.3)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0047

[Correction method] Change

[Correction contents]

In each of the above embodiments, the applicable plasma display panel 1 may be any one of an AC plasma display panel, a DC plasma display panel, and a hybrid plasma display panel as long as it has a thin structure. There may be. Further
In each of the above embodiments, the transparent substrate 2 is
Transparent glass constituting front panel 1F of display panel 1
Of the same material as the substrate
However, the transparent substrate 2 according to the present invention forms the front plate 1F.
Limited to materials of the same material as the transparent glass substrate
Instead, if it is transparent, it may be made of another material.
No.

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Yuichi Kijima 3300 Hayano, Mobara-shi, Chiba F-term in the Display Group, Hitachi, Ltd. (reference) 5C040 FA01 FA04 GB03 GB13 GB14 GB16 GC11 GH10 MA03 MA09 MA10 MA12 5C094 AA35 BA31 5G435 AA12 BB06 EE02 GG43

Claims (9)

[Claims] 1. A plasma display panel comprising: a plasma display panel; a transparent substrate spaced apart from a front surface of the plasma display panel; and a sealing portion sealing peripheral edges of the plasma display panel and the transparent substrate with a sealing material. A plasma discharge device, wherein a refrigerant is sealed in a refrigerant sealing space surrounded by a plasma display panel, the transparent substrate, and the sealing portion. 2. The refrigerant is a mixture of ethylene glycol and pure water, wherein the content of ethylene glycol is 70%.
2. The plasma discharge device according to claim 1, wherein the content is in the range of from about 90% by weight to about 90% by weight. 3. The plasma discharge device according to claim 1, wherein the sealing portion holds a bracket extending from the inside of the coolant enclosing space to the outside. 4. The plasma discharge device according to claim 3, wherein the bracket is made of aluminum die-cast. 5. The plasma discharge device according to claim 3, wherein the bracket has a radiation fin provided outside. 6. The plasma discharge device according to claim 1, wherein the transparent substrate is a glass substrate. 7. The plasma discharge apparatus according to claim 1, wherein the transparent substrate is the same glass substrate as a front glass substrate of a plasma display panel. 8. A display surface of the plasma display panel is constituted by a plurality of display cells, each of the plurality of display cells having two address electrodes for selecting a display cell and two display electrodes for performing a main discharge. The plasma discharge device according to claim 1, further comprising an electrode. 9. The plasma display panel includes a front glass substrate and a rear glass substrate which are arranged to face each other,
In the front glass substrate, the two display electrodes are arranged substantially parallel to each other on the side facing the rear glass substrate, and one of the two address electrodes is connected to the second electrode. The two display electrodes and the one address electrode are arranged in parallel with the display electrodes, and the two address electrodes are covered with a transparent dielectric layer, and a partition is provided on the transparent dielectric layer. The rear glass substrate is arranged on the side facing the front glass substrate so as to be substantially parallel to the other address electrode of the two address electrodes so as to intersect with the one address electrode. The plasma discharge device according to claim 8, wherein a stripe-shaped partition wall is provided in a direction in which the electrode extends.