JP2002140987A - Plasma display panel and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plasma display panel having no blue degradation and high discharge stability. SOLUTION: A low melting point glass as a sealing seal material is heated to a temperature not higher than softening point, and then gas in the panel is substituted with dry gas.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plasma display panel (PDP) using gas discharge light emission for use in a color television receiver or display for displaying characters or images, and a method of manufacturing the same.

[0002]

2. Description of the Related Art A conventional plasma display panel will be described below with reference to the drawings. FIG. 5 is a cross-sectional view schematically showing an AC type (AC type) plasma display panel.

In FIG. 5, reference numeral 41 denotes a front glass substrate, on which a display electrode 42 is formed. Further, the display electrode 42 is provided on the dielectric glass layer 4.
3 and a magnesium oxide (MgO) dielectric protection layer 44.

Reference numeral 45 denotes a rear glass substrate. On the rear glass substrate 45, address electrodes 46, partition walls 47, and phosphor layers (50 to 52) are provided.
Reference numeral 9 denotes a discharge space for filling a discharge gas. The phosphor layer has red 50, green 51, and blue 52 for color display.
Are arranged in order. Each of the phosphor layers (50 to 52) emits and emits light by vacuum ultraviolet rays (wavelength: 147 nm) having a short wavelength generated by discharge.

The following materials are generally used as the phosphors constituting the phosphor layers 50 to 52.

"Blue phosphor": BaMgAl ₁₀ O ₁₇ : E
u “Green phosphor”: Zn ₂ SiO ₄ : Mn or BaAl ₁₂
O _19: Mn "red phosphor": Y ₂ O _3: Eu or (YxGd1-
x) BO ₃ : Eu Each color phosphor can be produced as follows.

Blue phosphor (BaMgAl ₁₀ O ₁₇ : Eu)
First, barium carbonate (BaCO ₃ ), magnesium carbonate (MgCO ₃ ), aluminum oxide (α-Al ₂ O ₃ )
Is blended so that the atomic ratio of Ba, Mg, and Al is 1: 1: 1: 10. Next, a predetermined amount of europium oxide (Eu ₂ O ₃ ) is added to the mixture.

Then, an appropriate amount of flux (AlF_Two, B
aCl_Two) Together with a ball mill, and
At 650 ° C. for a predetermined time (for example, 0.5 hour), in a reducing atmosphere
Ki (H _Two, N_TwoIt is obtained by firing in the middle).

The red phosphor (Y ₂ O ₃ : Eu) is composed of yttrium hydroxide Y ₂ (OH) ₃ and boric acid (H ₃ BO ₃ ) as raw materials.
And Y and B in an atomic ratio of 1: 1. next,
A predetermined amount of europium oxide (Eu ₂
O ₃ ) is added, mixed with a suitable amount of flux in a ball mill, and fired in air at 1200 ° C. to 1450 ° C. for a predetermined time (for example, 1 hour).

The green phosphor (Zn ₂ SiO ₄ : Mn) is prepared by mixing zinc oxide (ZnO) and silicon oxide (SiO ₂ ) as raw materials so that the atomic ratio of Zn and Si is 2: 1. Next, a predetermined amount of manganese oxide (Mn ₂ O ₃ ) was added to the mixture, and the mixture was mixed by a ball mill.
C. for a predetermined time (for example, 0.5 hour).

[0011] The phosphor particles produced by the above method are crushed and sieved to obtain a phosphor material having a predetermined particle size distribution.

Hereinafter, a conventional PDP manufacturing method will be described.

An address electrode made of silver is formed on a rear glass substrate, and a visible light reflecting layer made of dielectric glass and a glass partition are formed on the address electrode at a predetermined pitch.

A phosphor layer is formed by disposing a phosphor paste of each color including a red phosphor, a green phosphor, and a blue phosphor in each space sandwiched by these partition walls, and after forming, a phosphor layer is formed at 500 ° C. The phosphor layer is baked to a degree to remove resin components and the like in the paste (phosphor baking step).

After firing the phosphor, a low-melting glass paste is applied around the back plate as a sealing material for sealing with the front plate,
In order to remove the resin component and the like in the low melting point glass paste, it is calcined at about 350 ° C. (low melting point glass paste calcining step).

Thereafter, the front plate on which the display electrode, the dielectric glass layer and the protective layer are sequentially formed, and the rear plate are arranged so that the display electrode and the address electrode are orthogonal to each other with the partition wall interposed therebetween, and fired at about 450 ° C. The surroundings are sealed with low melting point glass (sealing step).

Thereafter, the inside of the panel is evacuated while being heated to about 350 ° C. (evacuation step), and after completion, a discharge gas is introduced at a predetermined pressure.

[0018]

In the conventional method of manufacturing a plasma display panel, there are several steps that require substrate heating as described above.

However, in these heating steps, there is a problem that the phosphor used is thermally deteriorated, and particularly in the sealing step, the blue phosphor is greatly deteriorated. This is BaMgAl ₁₀ O ₁₇ used as a blue phosphor:
It is considered that Eu is thermally degraded in the sealing step, causing a decrease in emission intensity and a decrease in emission chromaticity.

Further, the impurity gas such as H ₂ O and CO ₂ remaining inside panel to the exhaust process, if it can not sufficiently exhausted by the exhaust process, there is a problem that deteriorates the discharge characteristics.

In order to solve this problem, a drying gas is introduced into the panel during sealing to prevent blue deterioration (Japanese Patent Application No. 11-168995), and an impurity gas remaining in the panel before the exhaust process is removed. A method of reducing sealing exhaust is considered (Japanese Patent Application No. 4-33837).

However, in these methods, before the panel is completely sealed, an air flow is formed in the gap between the sealing sealing materials in order to introduce gas into the inside of the panel. A hole remained without being sealed, causing a sealing error, and the sealing process was unstable.

In view of such problems, the present invention can seal a panel in a stable process, hardly causes thermal degradation of the phosphor, and reduces impurity gas in the steps up to the exhaust step. By doing so, it is an object to provide a plasma display panel which operates with relatively high luminous efficiency, has a high color temperature, and has good color reproducibility.

[0024]

In order to achieve the above object, a method of manufacturing a plasma display panel according to the present invention is characterized in that a phosphor layer is formed on at least one side and a sealing material layer is formed on at least one side. In a state where the face plate and the back plate are overlapped so that an internal space is formed between the two substrates, while flowing a dry gas into the internal space, the sealing is performed at a temperature (softening point) or higher at which the sealing sealing material is softened. In the method for manufacturing a plasma display panel including a sealing step of sealing by maintaining the sealing temperature, the drying gas is started to flow into the internal space after the temperature becomes equal to or higher than the softening point of the sealing material. And

Further, a front plate and a back plate each having a phosphor layer formed on at least one side and a sealing material layer formed on at least one side are overlapped so that an internal space is formed between the two substrates. Then, while alternately repeating the operation of filling the internal space with the dry gas and the operation of discharging the gas from the internal space, the sealing is performed by maintaining the sealing temperature at or above the softening temperature of the sealing material. In the method for manufacturing a plasma display panel including the attaching step, an operation of filling the internal space with a dry gas and an operation of discharging the gas from the internal space are alternately performed after the temperature of the sealing seal material is equal to or higher than the softening point. It is characterized by starting repeatedly.

In the above structure, when heating to the sealing peak temperature, a drying gas is supplied to the internal space,
It is preferable that the charging operation and the gas discharging operation from the internal space be started alternately and repeatedly.

According to the fourteenth aspect, a front substrate and a rear substrate, each having a phosphor formed on at least one substrate and a sealing member formed on at least one substrate, are provided between the two substrates. In a method for manufacturing a display panel, the method further comprises a sealing step of sealing while flowing a cleaning gas into the internal space in a state of being overlapped so as to form a space, wherein the softening point of the sealing member is Flowing the cleaning gas into the internal space at a temperature lower than the temperature, and near the softening point temperature of the sealing member,
The flow of the cleaning gas is stopped.

Preferably, after the sealing member is softened and the panel is hermetically sealed, the cleaning gas is started to flow into the internal space again.

[0029]

(Embodiment) A method of manufacturing a plasma display panel according to an embodiment of the present invention will be described below. FIG. 3 is a sectional view schematically showing an AC surface discharge type plasma display panel according to one embodiment of the present invention. Although only one cell is shown in FIG. 3, a PDP is configured by arranging a large number of cells that emit red, green, and blue light.

This PDP comprises a display electrode 22, a dielectric glass layer 23, and a protective layer (MgO) 2 on a front glass substrate 21.
4 and a back plate on which an address electrode 26, a visible light reflection layer 27, a partition wall 28 and a phosphor layer 29 are disposed on a back glass substrate 25, and formed between the front plate and the back plate. A discharge gas is sealed in a discharge space to be discharged.

As the composition of the phosphor material constituting the phosphor layer, those generally used for the phosphor layer of PDP can be used. Specific examples thereof include “blue phosphor”: BaMgAl ₁₀ O ₁₇ : Eu “green phosphor”: Zn ₂ SiO ₄ : Mn “red phosphor”: (Y, Gd) BO ₃ : Eu. .

The sealing step in the present embodiment for eliminating the influence of impurity gas containing water vapor released from each member (particularly MgO) in a stable process at the time of sealing will be described below.

(First Embodiment of the Present Invention) Hereinafter, a method for manufacturing a plasma display panel according to the first embodiment of the present invention will be described.

FIG. 1 shows a temperature profile in the sealing step of the present embodiment. FIG. 2 shows a panel in which a front plate 1 and a back plate 2 are bonded to each other before sealing, and an apparatus configuration.
A sealing material 3 for sealing is provided between the front plate 1 and the back plate 2, and the back plate 2 is connected to the first glass tube 5 connected to the exhaust device 4 and the first glass tube 5 connected to the dry gas introducing device 6. Two glass tubes 7 are formed. The first and second glass tubes are also provided with a sealing material 3 for sealing, and are fixed by a leaf spring (not shown). In this embodiment, a low-melting glass is used as a sealing material for sealing.

The panel was sealed by heating in a heating furnace 8 with the temperature profile shown in FIG.

In this sealing step, after the glass is heated to a temperature equal to or higher than the softening point of the low-melting glass as the sealing material for sealing at the time of raising the temperature, the inside of the panel is evacuated through the first glass tube, and The introduction of the drying gas through the glass tube was started. In this step, the gas released from the front panel 1 and the rear panel 2 is replaced with a dry gas. As a result, water vapor is not trapped in a narrow discharge space as in the conventional sealing process, so that deterioration of the blue phosphor during sealing can be suppressed, and residual impurity gas can be reduced. In addition, by heating to a temperature equal to or higher than the softening point of the low-melting glass, the panel is completely sealed, and the glass tube is completely bonded, and then a dry gas is passed through the panel, whereby the sealing is performed stably. Was.

(Second Embodiment of the Present Invention) Hereinafter, a method of manufacturing a plasma display panel according to a second embodiment of the present invention will be described.

FIG. 6 shows a temperature profile in the sealing step of the present embodiment. FIG. 7 shows a panel in which the front plate 1 and the back plate 2 are bonded to each other before sealing, and a device configuration.
A sealing material 3 for sealing is provided between the front plate 1 and the back plate 2, and a glass tube 7 connected to a dry gas introducing device 6 through a valve 9 is formed on the back plate 2. The glass tube 7 is also provided with a sealing material 3 for sealing, and a leaf spring (not shown)
It is fixed at. In this embodiment, a low-melting glass is used as a sealing material for sealing.

This panel was sealed by heating in a heating furnace 8 to a temperature not lower than the softening point of the low-melting glass according to the temperature profile of FIG.

In this sealing step, the valve 9 is opened,
When the temperature of the panel is raised by the drying gas introduction device 6, the glass tube 7
, A dry gas is introduced into the panel. At a temperature lower than the softening point temperature of the sealing member 3, the sealing member 3 is not softened. Therefore, there are many gaps between the substrate and the gas introduced from the gap and the substrate into the panel. The released impurity gas is discharged.

However, when the introduction of the dry gas is continued, a gas flow is formed in the gap of the sealing material 3 for sealing.
That portion remains as a hole without being sealed to the end, causing a sealing error, and the sealing process becomes unstable. Therefore, the valve 9 is closed near the softening point temperature of the sealing material 3 to stop the introduction of the dry gas.

Since gas is released from the substrate even at a temperature lower than the softening point of the sealing member 3, the gas released from the substrate at a temperature lower than the softening point is discharged to the outside of the panel by flowing a dry gas between the two substrates. Effect is obtained. Moreover, by doing in this way, when the sealing member 3 for sealing is softened, the sealing of the peripheral part outside a panel can be performed stably.

Further, according to the temperature profile shown in FIG. 8 and the panel and device configuration shown in FIG. 9,
Another embodiment of the present invention will be described.

In this sealing step, the valve 9 is opened,
The drying gas is introduced into the panel by the drying gas introduction device 6 through the second glass tube 7 when the panel is heated. Below the softening point temperature of the sealing member 3, since the sealing member 3 is not softened, there are many gaps with the substrate, and the gas introduced from the gap and the temperature below the softening point. The impurity gas released into the panel from the substrate is discharged.

Thereafter, the valve 9 is closed near the softening point temperature of the sealing material 3 to stop the introduction of the dry gas, and the sealing material 3 is heated to the softening point temperature or higher.
Seals the outer periphery of the panel to maintain airtightness inside the panel.

Further, after the inside of the panel was kept airtight, the valve 10 was opened and the exhaust of the panel was started through the first glass tube 5 and the introduction of the dry gas was started through the second glass tube 7. . In this step, the gas released from the front panel 1 and the rear panel 2 at a temperature equal to or higher than the softening point of the sealing member 3 is replaced with a dry gas. As a result, water vapor is not confined in a narrow discharge space as in the conventional sealing process, and it is possible to suppress the deterioration of the blue phosphor during the sealing. Can be obtained. In addition, since the gas flow is stopped near the softening point temperature of the low melting point glass to provide a panel sealing period, the panel is completely sealed, and after the glass tube is completely adhered, the dry gas is supplied into the panel. , The sealing was performed stably.

As the water vapor partial pressure of the drying gas, the lower the water vapor partial pressure is, the more the deterioration of the blue phosphor is suppressed. However, as compared with the conventional sealing process, it is 10 Torr (1.33 kP).
a) A remarkable effect appeared from the vicinity.

In addition, BaM which is often used in PDPs
gAl ₁₀ O ₁₇ : Eu, Zn ₂ SiO ₄ : Mn or (Y, G
d) When an oxide-based phosphor such as BO ₃ : Eu is heated in an oxygen-free atmosphere, some oxygen vacancies are formed and the luminous efficiency may be reduced.

Therefore, it is desirable that the dry gas used in the sealing process contains at least oxygen.

Further, if the temperature at which the gas is discharged and the drying gas is introduced is started from the peak sealing temperature, the defective sealing can be further suppressed.

As a gas introducing method, in addition to the present embodiment, a relief valve is provided between the first glass tube and the exhaust device, and a dry gas is introduced from the second glass tube and the gas is introduced from the relief valve. The same effect can be obtained by discharging.

Further, the same effect was obtained by providing only one of the first and second glass tubes and repeating the discharge of gas and the introduction of dry gas from the glass tube. However, also in this case, it is necessary to heat the low-melting glass to a temperature equal to or higher than the softening point of the low-melting glass to completely dry the panel after the panel is completely sealed and the glass tube is completely bonded.

Further, by continuing the panel exhaust step while keeping the panel sealed in these sealing steps at a high temperature, the exhaust step was completed efficiently.

Further, when the PDP is driven, as shown in FIG.
And the scanning electrode 101 of the cell to be turned on.
After applying an address discharge between the display electrodes 101a and 101b and applying a pulse voltage between the display electrodes 101a and 101b, a sustain discharge is performed. Then, the cell emits ultraviolet light in accordance with the discharge, and is converted into visible light by the phosphor layer.
An image is displayed by lighting the cell in this manner.

[0055]

EXAMPLES In order to verify the effects of the present invention, a PDP was manufactured based on the above embodiment and compared with a conventional PDP. The panels are 42 "(inch) in size.

The panel of this example used a glass frit having a softening point of 390 ° C. as a sealing material. Dry gas introduction into the panel was started from room temperature, and the panel was heated to 390 ° C. while flowing the dry gas into the panel. Dry gas flow rate is 1s
Lm. When the panel temperature reached 390 ° C., the introduction of the dry gas was stopped, and the panel was heated to 450 ° C., which was the peak sealing temperature. At the same time as the panel temperature reaches 450 ° C., the keeping of the sealing peak temperature is started, and at the same time, the gas discharge from the inside of the panel is started and the introduction of the dry gas into the panel is restarted. At this time, the flow rate of the dry gas was set to 100 sccm.

Note that dry air was used as the dry gas.

The PDP according to the comparative example is a panel sealed without flowing a dry gas into the panel as in the conventional sealing step.

In each of the above PDPs, the sealing step had a temperature profile in which a peak temperature of 450 ° C. was maintained for 10 minutes. The panel configuration is the same, and the phosphor film thickness is 3
0 μm, the discharge gas is Ne (95%)-Xe (5%)
Enclosed at 00 Torr (66.5 kPa).

In the panel evacuation step, which is the next step of the sealing step, the time required for the inside of the panel to reach a predetermined degree of vacuum of 5 × 10 ^-5 Pa is about 1 time as compared with the panel formed by the conventional sealing step. / 3, and the effect of shortening the lead time in the process was confirmed.

The emission characteristics evaluated by lighting the panel include the emission intensity (luminance divided by chromaticity coordinate y) when only blue is lit, chromaticity coordinate y, peak wavelength of emission spectrum, and blue light. Color temperature of white display when red, green and green are all turned on under the same power condition (no color temperature correction)
Was measured.

As a result of the panel comparison, in the panel of this example, the blue light emission intensity increased by 30% as compared with the comparative example, and the chromaticity coordinate y of blue was also reduced to 0.06 (the comparative example was 0.0%).
9). Along with that, the white color temperature also increased to 11000K (Comparative Example 5800K). Furthermore, impurities in the panel were eliminated during sealing, and the discharge characteristics and uniformity in the panel were improved.

Although not shown in the examples, as for the partial pressure of water vapor of the dry air flowing through the sealing device, the light emission characteristics improved as the partial pressure of water vapor decreased.

In the above embodiment, the surface discharge type PDP is exemplified. However, the present invention can be applied to all PDPs requiring a heat step for sealing, such as a facing discharge type PDP.

[0065]

As described above, according to the present invention, it is possible to suppress the deterioration of the luminous characteristics of the phosphor generated in the conventional sealing step in a stable process, and as a result, the luminous intensity and the luminous efficiency are increased. Thus, a plasma display panel having a wide color reproduction range can be realized.

[Brief description of the drawings]

FIG. 1 is a view showing a sealing step according to a first embodiment of the present invention.

FIG. 2 is a view showing a panel in which a front plate and a back plate are bonded to each other before sealing according to the first embodiment of the present invention, and a device configuration;

FIG. 3 is a schematic sectional view of an AC surface discharge type plasma display panel according to the present embodiment.

FIG. 4 shows a PDP in which a driving circuit is connected to the PDP of the present embodiment.
Diagram showing DP display device

FIG. 5 is a schematic sectional view of a conventional AC surface discharge type plasma display panel.

FIG. 6 is a view showing a sealing step according to a second embodiment of the present invention.

FIG. 7 is a diagram showing a panel and a device configuration in which a front plate and a back plate before sealing are attached to each other according to a second embodiment of the present invention.

FIG. 8 is a view showing a sealing step according to another embodiment of the second embodiment of the present invention.

FIG. 9 is a diagram showing a panel and a device configuration in which a front plate and a back plate before sealing are bonded to each other according to another embodiment of the second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front plate 2 Back plate 3 Sealing sealing material 4 Exhaust device 5 First glass tube 6 Dry gas introduction device 7 Second glass tube 8 Heating furnace 9, 10 Valve

Continued on the front page (72) Inventor Yoshiki Sasaki 1006 Kazuma Kadoma, Osaka Pref.Matsushita Electric Industrial Co., Ltd. Inventor Yoshio Watanabe 1006 Kazuma Kazuma, Kadoma City, Osaka Prefecture Inside Matsushita Electric Industrial Co., Ltd. 1006 Oaza Kadoma Matsushita Electric Industrial Co., Ltd.

Claims (26)

[Claims] 1. A state in which a front plate and a back plate, each having a phosphor layer formed on at least one side and a sealing material layer formed on at least one side, are overlapped so that an internal space is formed between the two substrates. A method of manufacturing a plasma display panel comprising a sealing step of sealing by maintaining a sealing temperature equal to or higher than a temperature at which the sealing seal material softens (softening point) while flowing a dry gas into the internal space. A method for manufacturing a plasma display panel, wherein a drying gas is started to flow into the internal space after the temperature of the sealing seal material has reached a softening point or higher. 2. The method for manufacturing a plasma display panel according to claim 1, wherein a drying gas is started to flow into the internal space when heating to a sealing peak temperature. 3. A state in which a front plate and a back plate each having a phosphor layer formed on at least one side and a sealing material layer formed on at least one side are overlapped so that an internal space is formed between the two substrates. Then, while alternately repeating the operation of filling the internal space with the dry gas and the operation of discharging the gas from the internal space, the sealing is performed by maintaining the sealing temperature at or above the softening temperature of the sealing material. In the method for manufacturing a plasma display panel including a mounting step, after the temperature of the sealing seal material is equal to or higher than the softening point, an operation of filling the internal space with a dry gas and an operation of discharging the gas from the internal space are alternately performed. A method for manufacturing a plasma display panel, wherein the method is repeatedly started. 4. The plasma according to claim 3, wherein an operation of filling the internal space with a dry gas and an operation of discharging the gas from the internal space are alternately started when heating to the sealing peak temperature. Display panel manufacturing method. 5. The method according to claim 1, further comprising, after the sealing step, an exhaust step of exhausting gas in an internal space between the two substrates while keeping the sealed substrates at an exhaust temperature higher than room temperature. A method for manufacturing a plasma display panel according to any one of claims 1 to 4. 6. The panel according to claim 1, wherein gas is introduced into or exhausted from the inside of the panel through a glass tube provided on the front panel or the rear panel.
The method for manufacturing a plasma display panel according to any one of the above. 7. The method for manufacturing a plasma display panel according to claim 6, wherein the glass tube is simultaneously adhered to the front plate and the back plate at the time of sealing with a sealing material for sealing. 8. The glass tube is fixed to the front plate or the back plate by a fixing jig, and is adhered simultaneously with the sealing of the front plate and the back plate by a sealing material. A manufacturing method of the plasma display panel according to the above. 9. The method for manufacturing a plasma display panel according to claim 1, wherein the dry gas contains at least oxygen. 10. The method according to claim 9, wherein the drying gas comprises dry air. 11. The partial pressure of water vapor of the drying gas is 133 Pa.
(1 Torr) or less.
11. The method for manufacturing a plasma display panel according to any one of items 10. 12. A plasma display panel in which an electrode and phosphor layers of a plurality of colors are arranged between a pair of parallelly arranged plates, and a gas medium is sealed,
A plasma display panel manufactured by the manufacturing method according to claim 1. 13. A plasma display panel display device comprising a plasma display panel and a driving circuit for driving the plasma display panel, wherein the plasma display panel is the plasma display panel according to claim 12. Plasma display panel display device. 14. A front substrate and a rear substrate each having a phosphor formed on at least one substrate and a sealing member formed on at least one substrate, so that an internal space is formed between the two substrates. A method for manufacturing a plasma display panel, comprising a sealing step of sealing while flowing a cleaning gas into the internal space in the combined state, wherein in the sealing step, a temperature is lower than a softening point temperature of the sealing member. And flowing the cleaning gas to the internal space and stopping the flow of the cleaning gas near the softening point temperature of the sealing member. 15. The manufacturing of the plasma display panel according to claim 14, wherein after the sealing member is softened and the panel is hermetically sealed, the cleaning gas starts flowing into the internal space again. Method. 16. The method according to claim 1, wherein the cleaning gas starts flowing into the internal space again from the sealing peak temperature.
5. The method for manufacturing a plasma display panel according to item 4. 17. The method according to claim 17, further comprising, after the sealing step, an exhausting step of exhausting gas in an internal space between the two substrates while keeping the sealed substrates at an exhaust temperature higher than room temperature. 17. The method for manufacturing a plasma display panel according to any one of 14 to 16. 18. The panel according to claim 14, wherein gas is introduced into the panel or gas is exhausted from the panel through a glass tube provided on the front panel or the rear panel.
18. The method for manufacturing a plasma display panel according to any one of items 17 to 17. 19. The glass tube is sealed by a sealing material for sealing.
The method according to claim 18, wherein the front panel and the rear panel are simultaneously bonded at the time of sealing. 20. The glass tube is fixed to the front plate or the rear plate by a fixing jig, and is adhered simultaneously with the sealing of the front plate and the rear plate by a sealing material. A manufacturing method of the plasma display panel according to the above. 21. The method according to claim 14, wherein the cleaning gas is a dry gas. 22. The method of manufacturing a plasma display panel according to claim 14, wherein the cleaning gas contains at least oxygen. 23. The method according to claim 22, wherein the cleaning gas comprises dry air. 24. The cleaning gas having a water vapor partial pressure of 133 P
a (1 Torr) or less.
24. The method for manufacturing a plasma display panel according to any one of 4 to 23. 25. A plasma display panel in which an electrode and phosphor layers of a plurality of colors are disposed between a pair of parallelly disposed plates, and a gas medium is sealed therein.
A plasma display panel manufactured by the manufacturing method according to any one of claims 14 to 24. 26. A plasma display panel display device comprising a plasma display panel and a driving circuit for driving the plasma display panel, wherein the plasma display panel is the plasma display panel according to claim 25. Plasma display panel display device.