JPH1196926A - Plasma display panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the substrate from being deformed even when external air pressure is extremely low compared to the gas pressure in the plasma display, by providing a mechanism pressing the first substrate or the second substrate from the outside toward the inside of a panel. SOLUTION: A front substrate fixing plate 13 and a rear substrate fixing plate 14 are provided respectively on the front face of a front substrate 1, and on the rear face of a rear substrate 2. The front substrate fixing plate 13 has an area which entirely covers the part surrounded by sealing glasses 3 which are arranged on all sides of the substrates, and the rear substrate fixing plate 14 has a perforated hole in the position of a prominence of the rear substrate. Both the fixing plates 13, 14 are glued respectively to the front substrate 1 and the rear substrate 2 by an adhesive applied to whole area of both the substrates, then both the fixing plates 13, 14 are pinched from the top and the bottom by fixing jigs 6 on the circumference of the plates. Here, the fixing jigs 6 prevent deformation of the front substrate 1 or the rear substrate 2 more certainly. Then, both the fixing plates 13, 14 are used together in order to fix more certainly.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat-type plasma display panel used for a display device of an information terminal device or a personal computer, or an image display device of a television.

[0002]

2. Description of the Related Art In recent years, a plasma display panel (hereinafter referred to as a PDP), which has attracted attention as a large and thin display device or an image display device, generally has a configuration as shown in FIG. It is.
FIG. 5A is a perspective view, and FIG. 5B is a side view of the same.

In FIG. 5, a band-like electrode group 56 is formed on a front substrate 1, and the electrode group 56 is covered with a dielectric glass insulating film 57 made of lead glass or the like. Back substrate 2
A band-shaped electrode group 58 and a partition 4 are disposed on the upper side, and the front substrate 1 and the rear substrate 2 are combined so that the respective electrode groups are orthogonal to each other.

The partition 4 is adhered to the rear substrate 2 and is in contact with the front substrate 1. Usually 10 by partition 4
The front substrate 1 and the rear substrate 2 face each other in parallel at an interval of about 0 to 200 microns, and four sides are sealed with sealing glass 3. After the sealing, the discharge gas is introduced through the exhaust pipe 5, and after the introduction, the exhaust pipe 5 is sealed. The sealing glass 3 blocks inflow of gas into the inside or outflow of gas to the outside.

When a voltage is selectively applied between the electrode group 56 on the front substrate 1 and the electrode group 58 on the rear substrate 2, light emission by gas discharge is obtained at the intersection of the selected electrodes. Since the discharge occurs in the space separated by the front substrate 1, the rear substrate 2, and the partition 4, light emission does not diffuse. That is, the partition 4 has the purpose of defining the distance between the front substrate 1 and the rear substrate 2 and the purpose of performing high-resolution display.

Further, when performing color display, a phosphor is applied to a peripheral portion of a discharge space which is blocked by a partition. The phosphor is converted by converting ultraviolet light generated by the discharge into visible light, so that the three primary colors red, blue,
By using green phosphors and appropriately adjusting the emission intensity of each of them, color display becomes possible.

As a discharge gas, in the case of a single color display, a mixed gas mainly composed of neon, which emits light in the visible region at the time of discharge, and in the case of a color display, the emission of light during discharge is in an ultraviolet region. A mixed gas centered on xenon is selected. The gas pressure assumes the use of PDP under atmospheric pressure,
Usually, the pressure inside the substrate is reduced to 3 with respect to the external pressure.
It is set in a range from about 00 Torr to about 500 Torr.

[0008]

However, when used in a place where the atmospheric pressure is significantly lower than 760 Torr, such as in outer space, the pressure difference between the gas inside the PDP and the external pressure becomes large, and the difference in the gas pressure causes the gas to be applied to the substrate. As a result, the distance between the front substrate 1 and the partition 4 is partially widened, and the discharge also spreads to the adjacent portion separated by the partition, thereby causing erroneous discharge of the adjacent portion and thereby the display resolution. Is reduced.

Further, when the glass is severely deformed, a tensile stress is generated in the sealing glass 3, causing a problem of damage to the plasma display panel such as gas leakage due to damage of the sealing glass 3. If the glass deformation is more severe,
Destruction of the front substrate 1 or the rear substrate 2 occurs.

[0010] These problems similarly occur in the case of a PDP in which gas is sealed at a pressure higher than normal pressure, even when used under atmospheric pressure. That is, until now
If the gas pressure inside the DP is extremely small relative to the gas pressure inside the DP, it is impossible to use it.
Add restrictions on P gas and places of use,
There were significant limitations on how to use it.

An object of the present invention is to provide a PDP in which the substrate is not deformed even when the outside air pressure is significantly smaller than the gas pressure inside the PDP.

[0012]

According to a first aspect of the present invention, a first substrate having electrodes on at least one side and a second substrate are arranged with a partition wall interposed therebetween.
A PDP in which a discharge gas is sealed, comprising a plasma display panel having a mechanism for pressing the first substrate or the second substrate from outside to the inside of the panel.

A second configuration for achieving the above object is as follows.
In the first configuration, the pressing mechanism is a flat plate, and the flat plate makes surface contact with most of an area including a central portion of at least one of the first substrate and the second substrate.

A third configuration for achieving the above object is as follows.
In the first configuration, the pressing mechanism is a flat plate, and the flat plate is surface-bonded over a large area including a central portion of at least one of the first substrate and the second substrate.

A fourth configuration for achieving the above object is as follows.
In the first configuration, the pressing mechanism is a rod-shaped flat plate,
The rod-shaped flat plate is in surface contact with most of at least one side of at least one of the first substrate and the second substrate.

A fifth configuration for achieving the above object is as follows.
In the first configuration, the pressing mechanism is a rod-shaped flat plate,
The rod-shaped flat plate is surface-adhered to at least one side of at least one of the first substrate and the second substrate.

A sixth configuration for achieving the above object is as follows.
In the first configuration, the pressing mechanism is a combination of a liquid and a flat plate, and the flat plate adheres to all peripheral portions of at least one of the first substrate and the second substrate. Characterized by being filled with the liquid.

A seventh configuration for achieving the above object is as follows.
In the first configuration, the pressing mechanism is a combination of a first flat plate, a second flat plate, and a gas, and the flat plate is adhered to at least any one of the peripheral portions of the first substrate or the second substrate, and the plasma is applied. When the gas pressure in the display panel is Pa, the gas pressure between the plasma display panel and the first flat plate is Pb, and the gas pressure between the first flat plate and the second flat plate is Pc, Pa>Pb> Pc.

[0019]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The first invention is based on the fact that a mechanism provided in a PDP for pressing from the outside to the inside of a panel is used when an internal stress is generated due to an extremely small external pressure relative to the internal discharge gas pressure. However, it has the effect of suppressing deformation of the substrate and preventing damage to the plasma display panel such as erroneous discharge due to an increase in the distance between the substrate and the partition walls and gas leakage due to damage to the gas shut-off portion.

According to a second aspect of the present invention, in the first aspect, the pressing mechanism from the outside suppresses the deformation of the substrate and prevents the PDP from being damaged such as a gas leak due to the damage of the gas shut-off portion. The flat plate that has been brought into surface contact has the effect of preventing the broken substrate fragments from scattering when the PDP is broken.

According to a third aspect of the present invention, in the first aspect, the pressing mechanism from the outside suppresses the deformation of the substrate, prevents the PDP from being damaged such as a gas leak due to the damage of the gas shut-off portion, and also provides the substrate with a pressing force. The flat plate that has been surface-bonded has an action of preventing the broken substrate fragments from scattering when the PDP is broken.

According to a fourth aspect of the present invention, in the second or third aspect, the contact or adhesion of the flat plate to the substrate prevents the fragments from being scattered when the PDP is damaged. Has an effect of preventing a deviation between the flat plate and the substrate and more reliably preventing scattering.

According to the fifth and sixth aspects of the present invention, in the fourth aspect, the fixing between the peripheral portion of the flat plate and the peripheral portion of the substrate prevents the deviation between the flat plate and the substrate, and further ensures the prevention of scattering. In addition, the use of a mechanism or an adhesive for sandwiching the flat plate from the outside for fixing to the peripheral portion has an effect of more reliably preventing the flat plate from being displaced from the substrate.

According to a seventh aspect of the present invention, in the second or third aspect, in addition to the fact that the contact or adhesion of the flat plate to the substrate prevents the fragments from being scattered when the PDP is damaged, an elastic body is used for the flat plate. It has a high uniformity and has a stronger external pressing action.

According to an eighth aspect, in the seventh aspect, in addition to the flat plate of the elastic body which compresses the substrate with high uniformity and strong pressure, the elastic body having a higher elastic modulus at the center portion than at the peripheral portion. Has an action of locally suppressing the deformation of the central portion where the expansion due to the internal gas is greatest.

According to a ninth aspect, in the eighth aspect, the elastic body having a locally high elastic modulus at the center portion locally presses and holds the central portion of the PDP, and also detects a local change in the elastic modulus. The realization of the thickness of the body, that is, the use of an elastic body having a thick central portion has an effect of realizing a simple and reliable local pressure change.

According to a tenth aspect, in the seventh aspect, in addition to the fact that the flat plate of the elastic body compresses the substrate with high uniformity and strong pressure, the use of a resin for the elastic body provides higher processing accuracy. Has the effect that a flat plate suitable for a large area can be obtained.

According to an eleventh aspect, in the tenth aspect,
In addition to the flat plate made of resin, high processing accuracy and easy large area are possible, the flat plate made of metal-containing resin realizes PDP with higher strength and durability and shields electromagnetic waves. Has an action.

A twelfth invention is directed to the eleventh invention,
A flat plate made of a resin containing a metal has high strength, durability and an electron shielding effect, and a flat plate made of a resin containing a thin metal has an action of further increasing the amount of transmitted light.

According to a thirteenth aspect, in the twelfth aspect,
In addition to increasing the amount of transmitted light by a flat plate made of a resin containing a thin metal, it is possible to dispose a thin wire between pixels.
Since the pixel is not blocked by the thin line, it has the effect of further increasing the amount of transmitted light.

According to a fourteenth aspect, in the twelfth aspect,
In addition to increasing the amount of transmitted light, a flat plate made of a resin containing a thin metal has a function of preventing reflection of external light when no light is emitted, in addition to a flat plate made of a resin containing a thin metal wire of black or a color close thereto. .

According to a fifteenth aspect, in the tenth aspect,
In addition to the fact that a flat plate made of resin enables high processing accuracy and easy enlargement, a flat plate made of resin having a transmittance of 50% or more increases the amount of transmitted light, particularly when it is arranged on a display side substrate. Having.

According to a sixteenth aspect, in the fifteenth aspect,
A resin flat plate having a transmittance of 50% or more increases the amount of transmitted light, and a flat plate made of an acrylic resin has an effect of being inexpensive and easy to form.

According to a seventeenth aspect, in the fifteenth aspect,
A resin flat plate having a transmittance of 50% or more increases the amount of transmitted light, and a flat plate made of a polycarbonate resin has an effect of realizing a PDP having excellent optical characteristics.

According to an eighteenth aspect, in the fifteenth aspect,
A resin flat plate having a transmittance of 50% or more not only increases the amount of transmitted light, but also has a function that the flat plate made of a polyester resin is easily formed into a film shape, so that handling is easy.

In a nineteenth aspect based on the first aspect, the pressing mechanism from the outside suppresses the deformation of the substrate and prevents the PDP from being damaged such as a gas leak due to the damage of the gas blocking portion. The pressing by the rod-shaped flat plate which is brought into linear contact with the periphery has a function of performing the pressing without greatly affecting the display area.

According to a twentieth aspect, in the first aspect, the pressing mechanism from the outside suppresses deformation of the substrate, prevents damage to the PDP such as gas leakage due to damage to the gas shut-off portion, and also enhances the substrate. The pressing by the rod-shaped flat plate that is linearly adhered to the periphery has an effect of performing the pressing with a minimum effect on the display area.

According to a twenty-first aspect, in the nineteenth or twentieth aspect, the contact or adhesion of the rod-shaped flat plate to the periphery of the substrate performs pressing with a minimum effect on the display area of the PDP, and also connects with each other. The rod-shaped flat plate has a function of more strongly pressing the substrate.

According to a twenty-second aspect, in the nineteenth or twentieth aspect, the contact or adhesion of the rod-shaped flat plate to the periphery of the substrate performs pressing so as to minimize the influence on the display area of the PDP. The rod-shaped flat plate having the function of pressing the substrate more firmly.

According to a twenty-third aspect, in the first aspect, the pressing mechanism from the outside suppresses the deformation of the substrate, prevents the PDP from being damaged such as a gas leak due to the damage of the gas shut-off portion, and furthermore, the substrate is prevented from being damaged. The pressing by filling the liquid between the substrate and the flat plate having the periphery bonded thereto has an effect of performing stronger and more uniform pressing.

According to a twenty-fourth aspect, in the first aspect, the pressing mechanism from the outside suppresses the deformation of the substrate, prevents damage to the PDP such as gas leakage due to damage to the gas shut-off portion, and also prevents the substrate from being damaged. A first flat plate and a second flat plate with their perimeters bonded,
A gas is filled between them, and the pressure is Pa, the gas pressure in the plasma display panel is Pb, the pressure of the gas between the plasma display panel and the first flat plate is Pb, and the pressure is between the first flat plate and the second flat plate. When the pressure of the gas is Pc, the pressure obtained by satisfying Pa>Pb> Pc has an effect of realizing a stronger and more uniform pressure.

According to a twenty-fifth aspect, the first, second, third, first
In the ninth, twentieth, twenty-third, or twenty-fourth invention, the external pressing mechanism suppresses deformation of the substrate, prevents damage to the PDP such as gas leakage due to damage to the gas shut-off portion, and in addition to 1 atm or more. PDP with high luminous efficiency
Has the effect of realizing

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First Embodiment) FIG. 1 is a side sectional view showing one configuration of a PDP to which the present invention is applied. In FIG. 1, a front substrate fixing flat plate 13 and a rear substrate fixing flat plate 14 unique to the present invention are provided on the front side of the front substrate 1 and the rear side of the rear substrate 2.

The front substrate fixing flat plate 13 and the rear substrate fixing flat plate 14 are both made of acrylic resin, and the front substrate fixing flat plate 13 adhered to the front substrate 1 is a portion surrounded by the sealing glass 3 on four sides, that is, enclosed. An area completely covering the portion where the gas and the front substrate 1 are in contact with each other and having a film thickness of 2.0 mm was used. The flat plate 14 for fixing the rear substrate adhered to the rear substrate 2 is exactly the same as the flat plate 13 for fixing the front substrate except that a through hole is provided at a position having a projection on the rear substrate such as the exhaust pipe 15. Both the front substrate fixing flat plate 13 and the rear substrate fixing flat plate 14 are bonded to the front substrate 1 and the rear substrate 2 by an adhesive applied to the entire surface of the substrate. The periphery of the flat plate was sandwiched between the front substrate fixing flat plate 13 and the rear substrate fixing flat plate 14 by the fixing jig 6 from above and below.

This PDP has a gas of 4000 Torr inside.
and discharge light emission was observed at 1 atm. However, the distance between the front substrate 1 and the partition wall 4 did not change as compared with a normal gas pressure of 400 Torr or less. Not observed. In addition, when 5000 Torr was sealed, the substrate was broken, but no glass fragments were scattered to the front side, and all were in a state of being bonded to the acrylic resin.

The material of the rear substrate fixing flat plate 14 to be adhered to the rear substrate does not need to be transparent. For example, a 1 mm-thick aluminum flat plate has the same effect.

In the case of using the flat plate adhered to the front substrate, a transparent resin having an average transmittance in the visible region of about 40% or more is desirable. In particular, in addition to acrylic resins, polyester resins such as polyethylene terephthalate are weather-resistant and can be reduced in weight by film processing.
desirable.

The fixing jig 6 for sandwiching the peripheral portion of the flat plate between the front substrate fixing plate 13 and the rear substrate fixing plate 14 from above and below is not always necessary, but prevents the front substrate 1 or the rear substrate 2 from being deformed. It can be performed more reliably.

In this embodiment, both the front substrate fixing plate 13 and the rear substrate fixing plate 14 are used for more secure fixing. For example, even if only the front substrate fixing plate is used, Almost the same effect was obtained. Further, a flat plate 13 for fixing the front substrate and a flat plate 14 for fixing the rear substrate
Both adhered to the front substrate 1 and the rear substrate 2, respectively, but almost the same effect was obtained by simple contact instead of adhesion.

(Second Embodiment) FIGS. 2A and 2B
1 is a side sectional view and a front view showing one configuration of a PDP to which the present invention is applied. The PDP shown in FIG. 2 is provided with a front substrate fixing rod-shaped flat plate 23 and a rear substrate fixing rod-shaped flat plate 24 unique to the present invention on the front side of the front substrate 1 and the rear side of the rear substrate 2.

Each of the front substrate fixing rod-shaped flat plate 23 and the rear substrate fixing rod-shaped flat plate 24 has a thickness of 1 mm and a width of 20 mm.
Of the front substrate 1 and the rear substrate 2 and adhered to a portion covering the sealing glass 3. Further, four front substrate fixing rod-shaped flat plates 23 on four sides on the front substrate 1 are bonded to each other, and four rear substrate fixing rod-shaped flat plates 24 on four sides on the rear substrate 2 are also bonded to each other. I have.

Further, the surface of the front substrate surrounded by the four front substrate fixing rod-shaped flat plates 23 is covered with a 400-mesh stainless steel screen 27, and the stainless screen 27 is covered by the front substrate fixing rod-shaped flat plates 23. Fixed.

This PDP has 4000 Torr of gas inside.
and discharge light emission was observed at 1 atm. However, the distance between the front substrate 1 and the partition wall 4 did not change as compared with a normal gas pressure of 400 Torr or less. Not observed. In addition, when 5000 Torr was sealed, the substrate was destroyed, but no scattering of substrate fragments was observed on the front side.
Captured by

In this embodiment, four rod-shaped flat plates 23 for fixing the front substrate are used.
Almost the same effect can be obtained by the rod-shaped flat plate.

The fixing jig 6 for sandwiching the peripheral portion of the flat plate 23 from the upper and lower sides of the bar-shaped flat plate 23 for fixing the front substrate and the flat plate 24 for fixing the rear substrate from above and below is not necessarily required. Can be performed more reliably.

The screen is preferably made of stainless steel, but may be replaced with another metal. Further, the pitch of the screen and the pitch of the partition walls 4 are matched with each other so that the screen does not block the pixel portion, so that the aperture ratio can be substantially increased.

(Third Embodiment) FIG. 3 is a side sectional view showing a configuration example of a PDP to which the present invention is applied. FIG.
In the PDP, a front substrate fixing flat plate 33 unique to the present invention is provided on the front side of the front substrate 1, and a liquid layer 36 is provided between the front substrate 1 and the front substrate fixing flat plate 33.

The flat plate 33 for fixing the front substrate is made of a polycarbonate resin having a thickness of 2 mm, and is bonded to the front substrate 1 on all sides. Pure water is filled between the front substrate 1 and the front substrate fixing plate 33.

This PDP has a gas of 1000 Torr inside.
and discharge light emission was observed at 0.2 atm. However, the distance between the front substrate 1 and the partition wall 4 was not changed from that observed at a normal gas pressure of 400 Torr or less at 1 atm. No abnormality due to discharge or gas leakage was observed.

In this embodiment, the flat plate for fixing the front substrate is used by directly bonding it to the substrate 1, but it is also possible to bond the four sides at intervals with an adhesive or the like and provide the liquid layer 36 between them. .

Although pure water is used in the present embodiment, any type of liquid can be used as long as it is transparent and does not affect the front substrate fixing plate 33 or the front substrate 1.

If this liquid is colored, it can also serve as a color filter for improving the contrast of an image. Further, by providing the liquid with another shielding effect, various shielding filters can be used. You can also double.

(Fourth Embodiment) FIG. 4 is a structural sectional view showing one configuration of a PDP to which the present invention is applied. The PDP shown in FIG. 4 includes a first flat plate 43, a second flat plate 45, a substrate 1 and a first flat plate 4 unique to the present invention on the front side of the front substrate 1.
3 between the first gas layer 47, the first flat plate 43 and the second flat plate 45.
A second gas layer 48 is provided therebetween.

Each of the first flat plate 43 and the second flat plate 45 was made of an acrylic resin having a thickness of 2.0 mm. Adhesive layers 49 were provided on four sides of front substrate 1 to form first gas layer 47, and first flat plate 43 was adhered. Further, adhesive layers 49 are provided on four sides of the first flat plate to form a second gas layer 48, and the second flat plate 4 is formed.
5 were adhered. The height of both the first gas layer 47 and the second gas layer 48 was 500 microns. In the peripheral portion of the flat plate, the second flat plate 45 and the back substrate 2 were sandwiched by the fixing jig 6 from above and below.

A gas pressure of 4000 Torr is sealed in the PDP, a gas pressure in the first gas layer is set to 2000 Torr, and a gas pressure in the first gas layer is set to 2000 Torr.
The gas pressure in the gas layer was set to 1000 Torr, and discharge light emission was observed at 1 atm. However, the distance between the front substrate 1 and the partition wall 4 did not change from the case of the normal gas pressure of 400 Torr or less. No abnormalities such as gas leaks were observed. In addition, when 5000 Torr was sealed, the substrate was destroyed, but no scattering of glass fragments was observed on the front side, and neither the first flat plate 43 nor the second flat plate 45 was damaged at all.

In this embodiment, the fixing jig 6 for sandwiching the second flat plate 45 and the rear substrate 2 from above and below is used at the periphery of the flat plate in order to perform the fixing more securely, but this is not always necessary. .

Although the flat plates 43 and 45 are bonded using the adhesive layer 49, the flat plates may be bonded directly to the front substrate 1, for example, as described in the third embodiment.

[0069]

As described above, according to the present invention, by providing a mechanism for pressing the substrate inward, the substrate can be deformed even when the external air pressure is significantly smaller than the gas pressure inside the PDP. It is possible to provide a PDP with no PDP.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a main part of a PDP according to a first embodiment of the present invention.

FIG. 2A is a side sectional view illustrating a schematic configuration of a main part of a PDP according to a second embodiment of the present invention. FIG. 2B is a front view illustrating a schematic configuration of a main part of the PDP according to the second embodiment of the present invention.

FIG. 3 is a schematic configuration diagram of a main part of a PDP according to a third embodiment of the present invention.

FIG. 4 is a schematic configuration diagram of a main part of a PDP according to a fourth embodiment of the present invention.

5A is a perspective view illustrating a schematic configuration of a conventional PDP, and FIG. 5B is a side view illustrating a schematic configuration of a conventional PDP.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 front substrate 2 rear substrate 3 sealing glass 4 partition wall 5 exhaust pipe 6 fixing jig 13 front substrate fixing flat plate 14 rear substrate fixing flat plate 23 front substrate fixing rod flat plate 24 rear substrate fixing rod flat plate

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Hiroyoshi Tanaka 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Kinzo Nonomura 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd.

Claims (25)

[Claims] 1. A plasma display panel having a first substrate and a second substrate, each having an electrode on at least one side thereof, sandwiching a partition and enclosing a discharge gas in the first substrate or the second substrate. A plasma display panel comprising a mechanism for pressing two substrates inward from the outside of the panel. 2. The device according to claim 1, wherein the pressing mechanism is a flat plate, and the flat plate is in surface contact with most of the area including the central portion of at least one of the first substrate and the second substrate. Plasma display panel. 3. The pressing mechanism is a flat plate, and the flat plate is surface-bonded over a large area including a central portion of at least one of the first substrate and the second substrate. Plasma display panel. 4. The plasma display panel according to claim 2, further comprising a mechanism for fixing a peripheral portion of the flat plate and a peripheral portion of at least one of the first substrate and the second substrate. 5. The plasma display panel according to claim 4, wherein the fixing method utilizes pressing by a fixing jig having a mechanism for sandwiching the flat plate from the outside. 6. The plasma display panel according to claim 4, wherein the fixing method uses adhesion between the flat plate and the first substrate or the second substrate. 7. The plasma display panel according to claim 2, wherein the flat plate is an elastic body. 8. The plasma display panel according to claim 7, wherein an elastic modulus of the elastic body is higher in a central portion of the panel than in a peripheral portion of the panel. 9. The plasma display panel according to claim 7, wherein the thickness of the elastic body is greater at the center of the panel than at the periphery of the panel. 10. The plasma display panel according to claim 7, wherein the elastic body is a resin. 11. The plasma display panel according to claim 10, wherein the elastic body is a resin containing a metal. 12. The plasma display panel according to claim 11, wherein the metal is a thin wire. 13. The plasma display panel according to claim 12, wherein a thin line-shaped metal is arranged between the pixels. 14. The plasma display panel according to claim 12, wherein the fine line-shaped metal is black or nearly black. 15. A resin having an average transmittance in the visible light region of 40.
11. The plasma display panel according to claim 10, wherein the resin is not less than 10% by weight. 16. The plasma display panel according to claim 15, wherein the resin is an acrylic resin. 17. The plasma display panel according to claim 15, wherein the resin is a polycarbonate resin. 18. The plasma display panel according to claim 15, wherein the resin is a polyester resin. 19. The mechanism according to claim 1, wherein the pressing mechanism is a rod-shaped flat plate, and the rod-shaped flat plate makes a surface contact with at least one side of at least one of the first substrate and the second substrate. Plasma display panel. 20. The device according to claim 1, wherein the pressing mechanism is a rod-shaped flat plate, and the rod-shaped flat plate is surface-bonded to at least one side of at least one of the first substrate and the second substrate. Plasma display panel. 21. The flat plate according to claim 19, wherein said flat plate is composed of two or more flat bars.
Or the plasma display panel according to claim 20. 22. The plasma display panel according to claim 19, wherein the bar-shaped flat plates are composed of two or more, and the bar-shaped flat plates are connected to each other by a thin metal wire. 23. A mechanism for pressing is a combination of a liquid and a flat plate, wherein the flat plate is bonded to at least one of the peripheral portions of at least one of the first substrate and the second substrate, and a gap is provided between the flat plate and the substrate. 2. The plasma display panel according to claim 1, wherein the panel is filled with the liquid. 24. A mechanism for pressing is a combination of a first flat plate, a second flat plate and a gas, and said flat plate is bonded to at least one of the peripheral portions of at least one of the first substrate and the second substrate. Set the gas pressure in the panel to P
a, when the gas pressure between the plasma display panel and the first flat plate is Pb, and the gas pressure between the first flat plate and the second flat plate is Pc, Pa>Pb> Pc is satisfied. The plasma display panel according to claim 1, wherein 25. The discharge gas according to claim 1, wherein the pressure of the discharge gas is 1 atm or more. Plasma display panel.