JPH08115674A - Color gas-discharge display panel and its forming method - Google Patents

Abstract

PURPOSE: To provide a color gas-discharge display panel in which disconnection and short circuits are unlikely to occur and which has electrodes capable of reducing wiring resistance. CONSTITUTION: A dielectric layer 20 having a plurality of parallel grooves 18 is provided on a back glass substrate 10 constituting a back plate, and anodes 22 and alloyed wires serving as auxiliary anodes 24 are fitted into the grooves 18. As the alloyed wires, 42-6 alloyed wires (42wt.% Ni-6wt% Cr-52wt.% Fe) 75μm thick and 10μm wide and having substantially the same coefficient of expansion as the back glass substrate are used.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a DC type color gas discharge display panel, and more particularly to the structure of its rear substrate and its forming method.

[0002]

2. Description of the Related Art An example of a conventional DC type color gas discharge display panel (hereinafter also abbreviated as DC-PDP) is disclosed in a literature:
"Communication Techniques, EID93-122, pp.61-66"
It is described in. The DC-PDP described in this document is
It is of a reflection type and has an alloy wire cathode on the front plate, while an anode and an auxiliary anode for color display are provided on the back plate.

For the cathode, an alloy wire is usually used as an electrode material, but conventionally, the anode and the auxiliary anode have been formed by screen printing. This is because it is easy to use the screen printing method to form the components having a complicated pattern such as the electrodes on the side of the back plate, the partition walls and the phosphors. Furthermore, conventionally, the anode or the like is formed by an alloy wire. In that case, it was difficult to fix the alloy wire on the glass substrate.

[0004]

However, DC-
In the case of high definition PDP, if the wiring electrodes of the anode and the auxiliary anode are formed by using the conventional screen printing,
The narrower the line width of the wiring electrode, the more likely it is that the Ni paste or the like will be dripped or blurred. As a result, there is a problem that disconnection or short circuit of the wiring electrode is likely to occur.

Further, when the screen size of the DC-PDP is increased, there is a problem that the wiring resistance of the wiring electrode increases. In order to reduce the wiring resistance, the sectional area of the wiring electrode may be increased. However, in a DC-PDP that requires high definition, it is difficult to increase the width of the wiring electrode, so the thickness of the wiring electrode must be increased. On the other hand, it was also difficult to increase the thickness of the electrode for the following reasons.

Conventionally, when a Ni paste or the like is screen-printed as a wiring electrode, it is necessary to stack many paste layers in order to increase the thickness of the electrode. However, when the paste layers are stacked, the width becomes wider toward the lower side of the paste layers, and the skirt becomes wider in the cross section. For this reason, it is difficult to increase the thickness of the electrode because the skirt is not allowed to be widened particularly when the definition is increased. Therefore, it is difficult to increase the cross-sectional area of the electrode. As a result, the wiring resistance increases, and there is a problem in that the emission intensity of the panel varies between the portion near the drive circuit and the portion far from the drive circuit.

For this reason, it has been desired to realize a color gas discharge display panel having electrodes which are less likely to cause disconnection or short circuit and have a reduced wiring resistance.

[0008]

According to the color gas discharge display panel of the first invention of the present application, a plurality of parallel to each other are formed on the back glass substrate which constitutes the back plate of the DC type color gas discharge display panel. Comprising a dielectric layer having a groove
It is characterized by comprising an anode and an auxiliary anode which are fitted in the groove and are constituted by a base material made of an alloy wire having an expansion coefficient substantially the same as that of the rear glass substrate.

According to the method of forming a color gas discharge display panel of the second invention of the present application, in forming a DC type color gas discharge display panel having a back plate having a plurality of display cells, a rear glass substrate is formed. A step of forming a dielectric layer on which a plurality of parallel grooves are formed, and a base material made of an alloy wire having an expansion coefficient substantially the same as that of the rear glass substrate The steps of fitting the configured anode and auxiliary anode respectively, and to fix the anode and auxiliary anode on the entire surface of the dielectric layer in which the anode and auxiliary anode are fitted, complete the process at a temperature below the softening point of the rear glass substrate. After applying a dielectric paste layer made of a material to be melted, baking the dielectric paste layer to form an alloy wire fixing layer, and removing at least a part of the alloy wire fixing layer. It allows to expose at least a portion of the auxiliary anode, and characterized in that it comprises a step of exposing at least a portion of the anode per the display cell.

In the method of forming a color gas discharge display panel according to the second aspect of the invention, preferably, when the alloy wire fixing layer is removed, the alloy wire fixing layer is left at least on a part of the anode.

[0011]

According to the gas discharge display panel and the method for forming the same according to the first and second aspects of the present application, alloy wires are used for the base bodies of the anode and the auxiliary anode. Therefore, D
Even if the C-PDP is made finer, it is possible to suppress the occurrence of disconnection or short circuit of the wiring electrode due to dripping or blurring of Ni paste or the like during screen printing.

Further, as the alloy wire, one having a rectangular cross section can be easily obtained. Therefore, the thickness of the wiring electrode can be increased without widening the width. As a result, since the resistance of the wiring electrode can be reduced, it is possible to suppress the occurrence of variations in emission intensity even if the DC-PDP has a large screen.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The first embodiment of the present application with reference to the drawings
Also, examples of the color gas discharge display panel of the second invention and the method for forming the same will be described together. It should be noted that the drawings to be referred to merely schematically show the sizes, shapes, and arrangement relationships of the respective constituent components to the extent that these inventions can be understood. Therefore, these inventions are not limited to the illustrated examples.

<First Embodiment> FIG. 1A is a plan view of an essential part of a back plate of a color gas discharge display panel according to a first embodiment of the present invention. FIG. 1B shows X- of FIG.
It is sectional drawing in the cut end along X. In FIG. 1C,
FIG. 2 is a cross-sectional view taken along the line Y-Y in FIG. Note that FIG. 1A is not a cross-sectional view, but is illustrated by hatching a part thereof for easy understanding of the drawing.

In the portion indicated by S in FIG. 1 (A),
The dielectric layer, the anode, and the auxiliary anode are illustrated with the phosphor and the partition wall removed.

In this embodiment, a dielectric layer 20 having a plurality of mutually parallel grooves 18 is provided on a rear glass substrate 10 which constitutes a rear plate.

An anode 22 and an auxiliary anode 24 are fitted in the groove 18. The anode 22 and the auxiliary anode 24 are formed of a base material made of an alloy wire having an expansion coefficient substantially the same as that of the rear glass substrate 10. Here, as the alloy wire, 42-6 alloy wire (42 wt% Ni-6 wt% Cr-52 wt% F
e) is used. Here, an alloy wire having a thickness of 75 μm and a width W of 100 μm is used for the anode and the auxiliary anode, the interval L ₁ between the adjacent anodes 22 is 220 μm, and the interval L ₂ between the adjacent anode 22 and the auxiliary anode 24 is set. 140 μm
And

Further, one anode 22 is arranged on each side of one auxiliary anode 24, and a wiring electrode group consisting of one auxiliary anode 24 and two anodes is formed. The display screens are arranged side by side.

Further, a grid-shaped partition wall 44 is formed on each part of the dielectric layer 20, the anode 22 and the auxiliary anode 24.
The display cells 30 are defined on the anode 22 by the partition walls 44. Also, each display cell 3
0 on the partition wall 44 and the dielectric layer 20.
Is provided, and the anode 22 is exposed at the center of each display cell 30. Further, an auxiliary discharge cell 48 is defined on the auxiliary anode 24.

Further, in this embodiment, the alloy wire fixing layer is inserted in the gap around the alloy wire in the groove 18. This alloy wire fixing layer portion (not shown) enables the alloy wire to be firmly fixed to the rear glass substrate. Further, in this embodiment, the alloy wire fixing layer 28a having the same plane pattern as the partition wall 44 is interposed between the partition wall 44 and the dielectric layer 20 and the anode 22. Therefore, the anode 22 can be more firmly fixed on the rear glass substrate 10 by the alloy wire fixing layer 28a.

Next, the structure of the front substrate, which is bonded to face the rear substrate, will be described.

FIG. 2A is a plan view of a main portion of the front plate of the color gas discharge display panel of the first embodiment of the present invention. 2B is a cross-sectional view taken along the line MM in FIG. 2A. 2C is the same as FIG. 2A.
FIG. 7 is a cross-sectional view taken along the line NN of FIG. Note that, although FIG. 2A is not a cross-sectional view, a part thereof is hatched to facilitate understanding of the drawing.

The front plate of this embodiment has a cathode 62 of an alloy wire on a front glass substrate 50. And
The display cell 30 and the auxiliary discharge cell 4 including the cathode 62
It has a partition wall 60 that defines the partition 8.

Grooves (notched portions) 62 and 64 for fitting the alloy wire to be the cathode 52 are fitted in the partition wall 60.
Is provided. Specifically, a groove 62 for fitting an alloy wire is formed in a partition wall 62 portion that partitions adjacent display cells 30. The width of the groove 62 is 100 μm, which is the same as the width of the alloy wire. Further, a groove 64 for fitting the alloy wire and providing priming slits 68 on both sides of the alloy wire is formed in the partition wall 44 parting the display cell 30 and the auxiliary discharge cell 48. The width of the groove 64 is 150 μm, which is the sum of the width of the alloy wire and the width of the priming slit 68. For this reason, a gap of 25 μm is formed on each side of the alloy wire for the priming slit. The priming slit 68 serves as a path for charged particles supplied from the auxiliary discharge cells 48 to the display cells 30 when pulse memory driving is performed.

When the front plate and the back plate are attached to each other, the cathode 62, the anode 22 and the auxiliary anode 2 are attached.
4 and 4 are attached to each other so as to extend in a direction perpendicular to each other.

<Second Embodiment> FIGS. 3A to 3D are sectional process drawings for explaining the present embodiment. This cross section corresponds to the cross section of the back plate taken along the line ZZ shown in FIG. In addition, (A) to (D) of FIG.
FIG. 4B is a sectional process diagram following FIG. In addition, FIGS. 5A to 5D are cross-sectional process diagrams subsequent to FIG. 4D. Further, FIGS. 6A and 6B are sectional process drawings following FIG. 5D.

According to the method of forming a color gas discharge display panel of the second invention of this application, in constructing a DC type color gas discharge display panel having a back plate having a plurality of display cells, first, a glass is used. A dielectric layer having a plurality of parallel grooves is formed on a substrate.

In this embodiment, first, a dielectric paste layer 12 forming a dielectric layer is formed on the entire surface of the glass substrate 10. For the dielectric paste, GLP made by Sumitomo Metal Mining Co., Ltd.
-16062 (trade name) is used. Further, in forming the dielectric paste layer 12, the dielectric paste is screen-printed at a thickness of 15 to 20 μm at a time, and after printing 1
After drying at a temperature of 50 ° C. for 10 minutes, the process of overlapping and printing the dielectric paste again is repeated 4 to 5 times. The thickness of the dielectric paste layer 12 is approximately the same as the thickness of the alloy wire used later. In this embodiment, since the alloy wire having a thickness of 75 μm is used, the thickness of the dielectric paste layer 12 is also set to 75 μm ((A) of FIG. 3).

Next, in order to form a plurality of parallel grooves on the dielectric paste layer 12, a sandblast resistant layer pattern 16 having an opening 14 in the groove portion is formed. Upon formation, dry film resist ORDYL BF-403 (trade name) manufactured by Tokyo Ohka is used. This pattern has a width of 100 at the portion where the groove is formed.
The openings 14 of μm are provided at a pitch of 270 μm ((B) of FIG. 3).

Then, the sandblast resistant layer pattern 16
Sandblasting through the opening 14
The portion of the dielectric paste layer 12 exposed at the is cut.
Here, a PD-1 type fine shot blasting apparatus manufactured by Alps Engineering was used as the sandblasting machine, and SiC # 1000 (1000th) was used as the polishing agent ((C) of FIG. 3).

After cutting, the sandblast resistant layer pattern 16
Is peeled off and the cut dielectric paste layer 16 is fired at a temperature of 580 ° C. (peak holding time of 10 minutes) to form a dielectric layer 20 having a groove 18 for fitting an alloy wire ( FIG. 3D).

Next, the rear glass substrate 10 is placed in the groove 18.
22 and auxiliary anode 24 constituted by a base material made of an alloy wire having a coefficient of expansion substantially equal to that of
Fit in each. Here, a 42-6 alloy wire (42 wt% Ni-6 wt% Cr-52 wt% Fe) is used as the anode 22 and the auxiliary anode 24 as they are. As the 42-6 alloy wire, a sheet-shaped 42-6 alloy having a thickness of about 50 μm to 100 μm processed into a blind shape by etching is used. Therefore, the alloy wire has a rectangular cross section. When processing the alloy wire, it is possible to form an alloy wire having a width substantially the same as the thickness of the sheet. For example, if an alloy sheet having a thickness of 75 μm is used, it can be processed into a blind shape having a width of 75 μm and a space of 80 μm. Here, the alloy has a thickness of 75 μm and a width of 100 μm ((A) of FIG. 4).

Further, this 42-6 alloy wire is excellent in sand blast resistance and alkali resistance. As in this embodiment, after the alloy wire is fitted in the groove, it is peeled off or developed by sand blast or an alkaline solution. It is suitable for use in a manufacturing method having a step of performing.

The cross-sectional shape of the 42-6 alloy wire is rectangular, and when the cross-sectional area is 75 μm × 100 μm,
The resistance value of the 42-6 alloy wire is about 1.25 Ω / cm. On the other hand, the wiring electrode formed by the conventional screen printing has a so-called Mt. Therefore, even when the width of the bottom surface of the wiring electrode is 120 μm, the height is 25 μm and the width of the upper surface is narrowed to 20 to 30 μm. In this case, the resistance value of the wiring electrode is about 7.5 Ω / cm. In the screen printing method, it is difficult to increase the thickness of the wiring electrode without widening the width of the wiring electrode, and thus it is difficult to reduce the resistance value. In this respect, when alloy wire is used,
Since the thickness can be easily increased, the wiring resistance can be reduced.

By the way, the 42-6 alloy is an alloy developed as a material having a coefficient of thermal expansion substantially the same as that of the glass substrate, but there is a slight difference in the contraction during cooling after overheating. As a result, in the back substrate, tension is generated at the interface between the 42-6 alloy wire and the back glass substrate,
The 6-alloy wire may be separated from the rear glass substrate. Therefore, it is necessary to firmly fix the 42-6 alloy wire to the rear glass substrate.

Therefore, in this embodiment, the anode 2 is formed on the entire surface of the dielectric layer 20 in which the anode 22 and the auxiliary anode 24 are fitted.
In order to firmly fix 2 and the auxiliary anode 24, a dielectric paste made of a material that completely melts at a temperature equal to or lower than the softening point of the rear glass substrate 10 is applied, and then this dielectric paste (not shown) is applied at 580 ° C. Temperature (peak retention time 10
And the alloy wire fixing layer 28 is formed. In this example, an i-9811 dielectric paste (trade name) manufactured by Sumitomo Metal Mining Co., Ltd. is used as the dielectric paste.

At a temperature of 580 ° C., this dielectric paste completely melts and completely covers the surface of the alloy wire, and further, the gap between the alloy wire and the dielectric layer or the rear glass substrate is formed in the groove 18. Get in. The alloy wire can be firmly fixed to the groove 18 by the alloy wire fixing layer portion (not shown) made of the dielectric paste that has entered the gap ((B) of FIG. 4).

Next, at least a part of the alloy wire fixing layer 28 is removed by a sandblast method to expose the auxiliary anode 24 and a part of the anode 22 which is the central part of the display cell 30 for each display cell 30. To expose. Further, here, the alloy wire fixing layer 28a is left in the same plane pattern as the partition wall formed in the subsequent step. As a result, the alloy wire fixing layer 28a is partially left on a part of the anode 22, and the anode 22 can be fixed more firmly ((C) of FIG. 4).

Thereafter, the back plate is formed by the same steps as the conventionally known steps.

First, a portion of the anode 22 which is an exposed portion of each display cell 30 is covered with a protective film pattern 32 of a dry film resist. Here, as a dry film resist, NEF150 (trade name) manufactured by Nippon Synthetic Chemical Industry is used.
After forming a resist film on the entire surface of the back plate by using, exposure and development are performed to form a desired pattern (FIG. 4).
(D)).

The cross section of the alloy wire is rectangular as described above. On the other hand, the cross section of the wiring electrode formed by the conventional screen printing method was a so-called Mt. On the other hand, since the wiring electrode of the alloy wire has a flatter upper surface than the conventional one, the contact area with the protective film pattern can be widened when the line width is the same. Therefore, if the alloy wire is used, peeling of the protective film pattern can be suppressed more than before.

Next, the dielectric paste layer 34 is formed on the entire surface of the flat plate. In forming the dielectric paste layer 34, a black dielectric paste GLP16 manufactured by Sumitomo Metal Mining Co., Ltd.
Printing and drying by the conventionally known screen printing method using 062 (trade name) (at a temperature of 150 ° C. for 10 minutes)
This is repeated to form the dielectric paste layer 34 ((A) of FIG. 5).

Next, a sandblast resistant layer pattern 36 is formed on the dielectric paste layer 34. The plane pattern of the sandblast resistant layer pattern 36 is the same as the plane pattern of the partition wall shown in FIG. 1 ((B) of FIG. 5).

Next, this sandblast resistant layer pattern 3
This dielectric paste layer 34 is cut by sandblasting via 6 until the protective film pattern 32 is exposed, and the dielectric paste layer other than the partition wall portion is removed. Then, it is dried at a temperature of 150 ° C. for 10 minutes to form the partition paste pattern 38. still,
In order to form a high definition color PDP, it is necessary to make the width of the partition thin. Individual display cells 30 due to high definition
When the area of each display cell 30 is reduced, it is necessary to increase the area of each display cell 30 to form a light emitting portion, that is, a phosphor, in order to prevent a decrease in the brightness of each display cell 30. For that purpose, it is necessary to reduce the thickness of the partition wall defining each display cell 30 as much as possible. Therefore, in this embodiment, the width d of the partition paste pattern 38 serving as a partition is
Is 60 μm ((C) of FIG. 5).

Next, the display cell 30 defined by the partition paste pattern 38 is filled with the phosphor paste 40. In this example, as the phosphor paste 40, a mixture of phosphor powder and a resin vehicle was used. The phosphor powder includes red phosphor KX-504A (trade name) and blue phosphor KX-501A manufactured by Kasei Optonix.
(Commercial name) and green phosphor P1G1 (commercial name) are used for individual display cells, and for the resin vehicle,
Screen oil # 6009 (trade name) manufactured by Okuno Seiyaku is used ((D) in FIG. 5).

Next, the phosphor paste 40 is dried at a temperature of 150 ° C. for 10 minutes to evaporate the solvent component contained in the phosphor paste 40. As a result, the phosphor paste layer 42 is formed on the bottom surface of the display cell 30 including the ears and the film pattern 32 and on the wall surface of the sidewall paste pattern 38 ((A) of FIG. 6).

Next, the back plate having the phosphor paste layer 42 formed thereon is dipped in a resist stripping solution (60 ° C.) made by Tokyo Ohka for 1 minute. By this immersion, the protective film pattern 32 on the anode 22 swells and is peeled off together with the phosphor paste layer 42 portion on the protective film pattern 32. As a result, the anode 22 is exposed at the center of each display cell 30. In addition, the sandblast resistant layer pattern 36 on the partition paste pattern 38 is also peeled off by this immersion. After the immersion, the back plate is washed with water and dried at a temperature of 150 ° C. for 10 minutes, and then 510
The partition 44 and the phosphor 46 are formed by baking the partition paste pattern 38 and the phosphor paste layer 42 at a temperature of C (peak holding time of 10 minutes). As a result, the back plate of the color gas discharge display panel is formed ((B) of FIG. 6).

Next, for reference, a method of forming the front plate will be briefly described.

FIGS. 7A to 7C are sectional process drawings for explaining the method for forming the front plate in this embodiment.
This cross section corresponds to the cross section of the back plate taken along the line N-N shown in FIG. In addition, FIG.
FIG. 7C is a sectional process diagram following FIG. 7C.

In this embodiment, the front plate is formed by a conventionally known method.

First, in order to protect the front glass substrate 50 by sandblasting so as not to become frosted glass, the opening portion of the display cell 30 (the portion where the front glass substrate is exposed) is formed.
The protective film pattern 52 is formed on the portion to be formed. To form the protective film pattern 52, a dry film resist ORDYL BF-403 (trade name) manufactured by Tokyo Ohka Co., Ltd. is used to perform exposure and development by a conventionally known method ((A) of FIG. 7).

Next, a dielectric layer is formed on the entire surface of the front glass substrate 50 on which the protective film pattern 52 is formed. In forming the dielectric paste layer 54, a black dielectric paste GLP16061 (trade name) manufactured by Sumitomo Metal Mining Co., Ltd. was used, and printing and drying (10 minutes at a temperature of 150 ° C.) by a conventionally known screen printing method were repeated. Film thickness 80
A μm dielectric paste layer 54 is formed (FIG. 7B).

Next, a sandblast resistant layer pattern 56 is formed on the dielectric paste layer 54. The plane pattern of the sandblast resistant layer pattern 56 is the same as the plane pattern of the partition wall shown in FIG. 2 ((C) of FIG. 7).

Next, this sandblast resistant layer pattern 5
The dielectric paste layer 54 is sandblasted through 6 until the protective film pattern 52 is exposed to form a partition paste pattern 58 ((A) of FIG. 8).

Next, the sandblast resistant layer pattern 56 and the protective film pattern 52 are removed using an organic resist stripping solution. Then, after drying at a temperature of 150 ° C. for 10 minutes, the partition paste pattern 58 is fired to form the partition 6
0 is formed ((B) of FIG. 8).

Grooves (notched portions) 64 and 66 for fitting an alloy wire to be the cathode 62 are fitted in the partition wall 60.
Is provided. Specifically, a partition wall 60 for partitioning adjacent display cells 30 is provided with a groove 64 for fitting an alloy wire. The width of the groove 64 is 100 μm, which is the same as the width of the alloy wire. In addition, a groove 66 for fitting an alloy wire and providing a priming slit 68 on both sides of the alloy wire is formed in a partition wall 60 portion partitioning the display cell 30 and the auxiliary discharge cell 48. This groove 6
The width of 6 is the width of the alloy wire and the priming slit 68.
The total width is 150 μm. Therefore, a gap of 25 μm for each priming slit 68 is formed on each side of the alloy wire. This priming slit 68
Serves as a path for charged particles supplied from the auxiliary discharge cells 48 to the display cells 30 when the pulse memory driving is performed.

Next, the cathode 6 is placed in the grooves 62 and 64 of the front plate.
42-6 alloy wire as 2 (width 100 μm, thickness 7
5 μm). As a result, a front plate similar to the front plate shown in FIG. 2 is completed ((C) of FIG. 8). Note that FIG.
(C) shows a cathode 62 that is visible on the other side of the cut, although it is not a cross section along the cut of M-M.

Hereinafter, the front plate and the back plate are laminated so that the cathode and the anode face each other so as to intersect each other, and the discharge gas is sealed by a well-known process to form a color gas discharge display panel. .

Further, in the method of the present invention, by using the alloy wire for the anode and the auxiliary anode, it is possible to suppress the occurrence of disconnection or short circuit even when the definition is increased.

Further, in the method of the present invention, by using alloy wires for all the wiring electrodes, the thickness of the cathode and the anode can be increased to increase the cross-sectional area and reduce the wiring resistance. So a large screen color PD
Suitable for P.

In the above-mentioned embodiments, these inventions are described as examples in which a specific material is used and they are formed under specific conditions. However, many modifications and variations can be made to these inventions. For example, in each of the above-described examples, the 42-6 alloy wire was used as the base material of the anode and the auxiliary anode, but in these inventions, for example, Fe-Ni having substantially the same expansion coefficient as the back glass substrate is used. You may use an alloy wire or a Fe-Ni-Co alloy wire.

In each of the above-mentioned embodiments, the alloy wire fixing layer on the auxiliary anode is removed, but in these inventions, the alloy wire fixing layer may be partially left on the auxiliary anode. . As a result, the auxiliary anode can be more firmly fixed on the glass substrate.

Further, in each of the above-mentioned embodiments, the base material of the alloy wire is used as it is for the wiring electrodes such as the cathode and the anode, but in these inventions, gold (A
u) Plating or nickel (Ni) may be applied. A
By plating a metal having good conductivity such as u, the wiring resistance of the wiring electrode can be further reduced.

If the rear plate is divided into a plurality of units in the direction in which the anode extends, when a defect occurs, only the defective unit needs to be replaced, so that the yield of the rear plate can be improved. it can. Further, by dividing the unit into units, it is possible to reduce the cost as compared with the case where a single large-area back plate is formed.

[0065]

According to the gas discharge display panel and the method of forming the same of the first and second aspects of the present application, alloy wires are used for the base bodies of the anode and the auxiliary anode. Therefore, even if the DC-PDP is made finer, it is possible to suppress the occurrence of disconnection or short circuit of the wiring electrode due to dripping or blurring of Ni paste or the like during screen printing.

Further, as the alloy wire, one having a rectangular cross section can be easily obtained. Therefore, the thickness of the wiring electrode can be increased without widening the width. As a result, since the resistance of the wiring electrode can be reduced, it is possible to suppress the occurrence of variations in emission intensity even if the DC-PDP has a large screen.

[Brief description of drawings]

FIG. 1A is a plan view of an essential part of a back plate of a color gas discharge display panel according to a first embodiment of the present invention. (B)
[Fig. 4] is a sectional view taken along a line XX in (A).
(C) is a sectional view taken along the line YY of (A).

FIG. 2A is a plan view of relevant parts of a front plate of the color gas discharge display panel of the first embodiment. (B) is a sectional view taken along the line MM of (A). (C) is
It is sectional drawing in the cut edge along NN of (A).

3A to 3D are cross-sectional process diagrams of a back plate used for explaining the second embodiment.

4A to 4D are cross-sectional process diagrams following FIG. 3D.

5A to 5D are cross-sectional process diagrams following FIG. 4D.

6 (A) and (B) follow FIG. 5 (D),
It is a section process drawing.

7A to 7C are cross-sectional process diagrams of the front plate used for describing the second embodiment.

8A to 8C are sectional process drawings following FIG. 7C.

[Explanation of symbols]

 10: Back glass substrate 12: Dielectric paste layer 14: Opening 16: Sandblast resistant layer pattern 18: Groove 20: Dielectric layer 22: Anode 24: Auxiliary anode 28, 28a: Alloy wire fixing layer 30: Display cell 32: Protective film pattern 34: Dielectric paste layer 36: Sandblast resistant layer pattern 38: Partition paste pattern 40: Phosphor paste 42: Phosphor paste layer 44: Partition 46: Phosphor 48: Auxiliary discharge cell 50: Front glass substrate 52: Protective film pattern 54: Dielectric paste layer 56: Sandblast resistant layer pattern 58: Partition paste pattern 60: Partition 62: Cathode 64: Groove 66: Groove 68: Priming slit

Claims (3)

[Claims] 1. A back glass substrate constituting a back plate of a DC type color gas discharge display panel, comprising a dielectric layer having a plurality of grooves parallel to each other, the back glass substrate being fitted into the grooves. A color gas discharge display panel, comprising: an anode and an auxiliary anode which are constituted by a base material made of an alloy wire having an expansion coefficient substantially equal to that of the expansion coefficient. 2. In forming a DC type color gas discharge display panel having a back plate having a plurality of display cells, a dielectric layer having a plurality of mutually parallel grooves is formed on a back glass substrate. And a step of fitting an anode and an auxiliary anode, each of which is made of an alloy wire having an expansion coefficient substantially the same as that of the rear glass substrate, into the groove, and the anode and the auxiliary electrode. In order to fix the anode and the auxiliary anode on the entire surface of the dielectric layer in which the anode is fitted,
Applying a dielectric paste layer made of a material that completely melts at a temperature equal to or lower than the softening point of the back glass substrate, and then firing the dielectric paste layer to form an alloy wire fixed layer; and the alloy wire fixed layer Forming at least a part of the auxiliary anode to expose at least a part of the auxiliary anode and exposing at least a part of the anode for each display cell. Method. 3. The method for forming a color gas discharge display panel according to claim 2, wherein when the alloy wire fixing layer is removed, the alloy wire fixing layer is left on at least a part of the anode. Method for forming a color gas discharge display panel.