JP3387356B2 - Gas discharge display panel and method of manufacturing the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas discharge display panel such as a plasma display panel and a method for manufacturing the same, and more particularly to a method for forming barrier ribs in the gas discharge display panel.

[0002]

2. Description of the Related Art Conventionally, as a method of forming barrier ribs in a gas discharge display panel such as a plasma display panel, a glass paste is pattern-printed on a substrate by screen printing and baked, and such a step is repeated to obtain a predetermined height Had formed barrier ribs. However,
With such a method, it is difficult to deal with the high definition and the large screen of the display panel because the accuracy of the pattern width and the pitch deviation of the pattern are large.

Therefore, as a barrier rib forming method for solving these problems, for example, there is a sandblast method described in Japanese Patent Laid-Open No. 6-36683. The sandblast method will be described with reference to the process chart of FIG. In the figure, 1 is a substrate, 2 is a barrier rib material, 5 is an abrasive material, 12 is a sandblast resistant material, 13 is a mask, and 14 is a barrier rib. First, a barrier rib material 2 made of glass paste or the like having a predetermined thickness is formed on the substrate 1 almost all over the surface,
A mask material 12 having sandblast resistance is formed on the entire surface. As the mask material, a polymer material having a cushioning property that absorbs the collision of the abrasive 5 during the blasting process is used. This mask material 12 is patterned using a photolithography technique to form a mask 13. Sandblasting is performed by spraying the abrasive 5 onto the substrate using the mask 13, and the barrier rib 2 is cut to form the pattern of the barrier rib 14. Finally, the mask 13 is removed and firing is performed to complete the barrier rib 14.

[0004]

The conventional method of forming barrier ribs is as described above, and when the barrier ribs are formed by the sandblast method, there is a problem that the process becomes complicated as compared with the conventional stacking of pattern printing. there were.
That is, in the case of stacking of pattern printing, the barrier ribs are completed by printing and firing, but in the case of the sandblasting method, full surface printing and formation of sandblast resistant material, pattern formation of sandblast resistant material, sandblasting, removal of sandblast resistant material, firing Was needed.

The present invention has been made to solve the above-mentioned problems, and by reducing the complicated steps in the sandblast method, it is possible to realize high definition and a large screen, and it is easy to manufacture. Gas discharge display panel.

[0006]

A gas discharge display panel according to a first structure of the present invention is a gas discharge display panel having a predetermined pattern on a substrate and having barrier ribs forming a discharge space, wherein an inorganic powder is used. A first barrier rib material, which is used as a base body and has a predetermined thickness and which can be removed by sandblasting, is formed on the first barrier rib material with a predetermined thickness. The additive that imparts the property is added , and
Having a softening point lower than that of the barrier rib material of
The sandblasting-resistant mask formed by patterning into a predetermined shape by removing unnecessary portions of the barrier rib material by laser processing is sandblasted, and the first pattern left in the same pattern as the sandblasting-resistant mask. The barrier rib is formed by firing the barrier rib material and the sandblast resistant mask.

[0007]

[0008]

[0009]

[0010]

A gas discharge display panel according to a second structure of the present invention is a gas discharge display panel having a predetermined pattern on a substrate and having barrier ribs forming a discharge space. A barrier rib material that is formed with a predetermined thickness and that can be removed by sandblasting, is sandblasted using a sandblasting-resistant mask formed by laser-annealing the upper surface of the barrier rib material with a predetermined thickness and pattern. The barrier rib material left in the same pattern as that of the mask and the barrier rib formed by firing the sandblast resistant mask.

In the method of manufacturing a gas discharge display panel according to the first method of the present invention, in forming the barrier ribs of the gas discharge display panel, the first barrier rib material which is made of inorganic powder and is removable by sandblasting is used. Step of forming a predetermined thickness on the substrate, the inorganic powder as a base,
A second barrier rib material, to which an additive imparting sandblast resistance is added, is formed on the first barrier rib material to have a predetermined thickness.
And the unnecessary portion of the second barrier rib material.
It is removed by laser processing and patterned into a predetermined shape
Forming a sandblasting-resistant mask by the first step
Of the barrier rib material, the first barrier left step sandblasting, and the resistance to sandblast mask the same pattern by using the sandblast resistance mask
And the rib material is obtained by a step of forming a <br/> the barrier ribs by sintering and the sandblast resistance mask.

In the method of manufacturing a gas discharge display panel according to the second method of the present invention, when forming the barrier rib of the gas discharge display panel, a barrier rib material which is made of inorganic powder and is removable by sandblasting is formed on the substrate. Forming a predetermined thickness, forming a sandblasting-resistant mask by laser annealing the upper surface of the barrier rib material with a predetermined thickness and pattern, and sandblasting the barrier rib material using the sandblasting-resistant mask , And the barrier rib material left in the same pattern as the sandblast resistant mask, and the sun resistant material.
Those having a step of forming the barrier ribs by sintering and Doburasuto mask.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1 . The first embodiment of the present invention will be described with reference to FIG. Figure 1
In, 1 is the substrate, 2 is removed by sandblasting
A first barrier rib material made of a possible material , 9 is a second barrier rib material having sandblast resistance, 10 is a mask, and 11 is a barrier rib.

First, as shown in FIG. 1A, a first barrier rib material 2 having a predetermined film thickness is formed on the entire surface of a substrate 1,
The second barrier rib material 9 is formed on the entire surface. Here, as an example, a glass substrate such as soda lime glass is used as the substrate 1, a paste based on an inorganic powder such as glass or ceramic is used as the first barrier rib material 2, and a film thickness of about 150 to 200 μm is used. Print on the entire surface. As the second barrier rib material 9, a glass paste in which a material such as a resin having sandblast resistance is added to the same glass paste as the first barrier rib material 2 is used, and the entire thickness is about 10 to 20 μm. Print. As an additive to be added to the glass paste for obtaining sandblast resistance, a rubber resin or the like is preferable, and the addition ratio is preferably 5 to 20% of the solid content. The film thickness of the first barrier rib material 2 is about 150 to 200 μm, and when the entire surface printing is performed repeatedly, the last printing step of overcoating may be the step of forming the second barrier rib material 9.

[0016] Next, as shown in FIG. 1 (b), patterning the unnecessary portion of the second barrier rib member 9 in the shape of to Tokoro <br/> constant removed by laser processing to form a mask 10. As described above, the second barrier rib material 9 is made of the same material as the first barrier rib material 2 as a base, and by adding a predetermined amount of material such as resin to this, sandblast resistance can be enhanced, The formed mask 10 functions as a sandblast resistant mask during sandblasting.

[0017] Next, as shown in FIG. 1 (c), the mask 1
Sandblasting is performed in which the abrasive 5 is sprayed onto the substrate through 0, and the first barrier rib material 2 is cut to form the barrier rib 11. Barrier ribs 11 formed in this manner, as shown in FIG. 1 (d), a first barrier rib member is formed in two parts of the second barrier rib material, the portion of the second barrier rib material Additives such as resin disappear due to the firing process, and the same substrate as the barrier rib material remains, so that the two parts are made of substantially the same constituent material. Therefore, it is not necessary to remove the second barrier rib material that functions as a mask unlike the conventional mask 13, and it is possible to leave the second barrier rib material as a material for forming the barrier rib 11 and reduce the manufacturing process.

Embodiment 2 . Embodiment 2 of the present invention will be described. In each of the above-described embodiments, as a method for uniformly forming the first barrier rib material 2 on the entire surface, it is preferable to form a film over the entire surface by a screen printing method and repeat this to perform laminated printing.
By changing the viscosity and composition ratio of the glass paste or changing the size of the mesh of the screen plate, a film thickness of 10 to 30 microns can be printed by one printing. Printing is performed several times according to the desired film thickness, and the first barrier rib material 2
Stack up. The formation of the second barrier rib material 9 is performed similarly to the formation of the first barrier rib material 2.

Third Embodiment The third embodiment of the present invention will be described. In each of the above-described embodiments, a method for uniformly forming the first barrier rib material 2 on the entire surface is, for example, 100 to 100 by a roll coating method.
A 200-micron thick film may be collectively formed. The roll coating method is a method in which a glass paste is poured into two rolls separated by a constant interval, and a paste having a film thickness regulated by the interval between the rolls is transferred onto a substrate. The number of steps is reduced as compared with the laminated printing of the screen printing method.

Fourth Embodiment A fourth embodiment of the present invention will be described. In each of the above embodiments, a white pigment is used for the first barrier rib material 2,
By adding the black pigment to the second barrier rib material 9, the barrier rib main body is white and the barrier rib 11 having only the uppermost surface black is formed. As a result, the emission brightness of the phosphor is improved, and a gas discharge display panel having a high contrast ratio can be obtained.

In the above embodiment, the white barrier rib 11 may be formed by adding a white pigment to both the first barrier rib material 2 and the second barrier rib material 9. As a result, the emission brightness of the phosphor is improved.

Fifth Embodiment Embodiment 5 of the present invention will be described. In each of the above embodiments, for example, when the softening point of the glass frit used for the first barrier rib material 2 is 550 ° C. and the softening point of the glass frit used for the second barrier rib material 9 is 530 ° C., 550 ° C. When the barrier rib material is fired at 0 ° C., the first barrier rib material is less melted by firing and can retain its shape, but the second barrier rib material loses its shape due to melting by firing. Since the second barrier rib material has a smaller film thickness than the first barrier rib material, the shape of the entire barrier rib does not collapse, but the shape of the upper portion of the barrier rib is rounded.
Such a rounded shape causes damage to the barrier rib and the protective film because there is no protrusion on the barrier rib when a protective film such as an MgO film formed on an opposing glass substrate is joined to form a panel. It becomes difficult and advantageous. As described above, by selecting the softening point of the glass frit used for the second barrier rib material, the shape of the upper part of the barrier rib can be controlled.

Sixth Embodiment The sixth embodiment of the present invention will be described with reference to FIG. Figure 2
In the figure, 15 is a partially sintered region, 16 is a laser beam, and 17 is a barrier rib.

[0024] First, as shown in FIG. 2 (a), is formed on the entire surface of the barrier rib material 2 of a predetermined thickness on the substrate 1. Here, as an example, a glass substrate such as soda lime glass is used as the substrate 1, and a paste based on an inorganic powder such as glass or ceramic is used as the barrier rib material 2.
Printing is performed on the entire surface to a film thickness of about 150 to 200 μm.

Next, as shown in FIG. 2 (b), the laser beam 16 is irradiated on a predetermined region of the barrier rib material 2 top to fit the barrier rib pattern, the barrier rib material 2 a predetermined thickness of the irradiated portion (10 (About 20 μm) to selectively anneal and partially sinter. Since this partially sintered region 15 is hard, it has sandblast resistance and functions as a sandblast resistance mask during sandblasting. Note that the degree of sintering does not have to be perfect, as long as sandblast resistance is obtained.

Next, as shown in FIG. 2 (c), the barrier rib material in the sintered region 15 is used as a sandblasting-resistant mask for sandblasting the abrasive 5 onto the substrate, and the unsintered barrier rib material is subjected to sandblasting. 2 cut, Figure 2
Barrier ribs 17 are formed as shown in FIG. Thus barrier rib 17 formed, as shown in FIG. 2 (d), are formed of two parts barrier rib material 2 and partial sintering to have barrier rib material 15 which is not partial sintering, The two parts will be composed of substantially the same materials of construction. Therefore, the barrier rib material 1 that functions as a mask
It is not necessary to remove 5 unlike the conventional mask 13, and the barrier rib 17 can be left as a material that constitutes the barrier rib 17, and the number of manufacturing steps can be reduced. Further, unlike the first embodiment, it is not necessary to form the second barrier rib material separately from the first barrier rib material, and the number of manufacturing steps can be reduced. In the present embodiment, a black pigment is added to the upper surface of the formed barrier rib 17 to form a black barrier rib only on the uppermost surface, and a gas discharge display panel having a high contrast ratio is obtained. You may do it.

[0027]

As described above, according to the first configuration of the present invention, in the gas discharge display panel having the predetermined pattern on the substrate and the barrier rib forming the discharge space,
A first barrier rib material, which is formed on the substrate with a predetermined thickness and is removable by sandblasting, is formed on the first barrier rib material with a predetermined thickness by using the inorganic powder as a base. Is added as an additive to provide sandblast resistance , and the softness of the first barrier rib material is increased.
Sandblasting is performed using a sandblasting-resistant mask formed by patterning into a predetermined shape by removing unnecessary portions of the second barrier rib material having a softening point lower than the softening point by laser processing, and this sandblasting-resistant mask Since it has a barrier rib formed by firing the first barrier rib material and the sandblast resistant mask left in the same pattern as the above, it is possible to achieve high definition and a large screen, and a gas that is easy to manufacture. A discharge display panel can be realized. The softening point of the second barrier rib material is the same as that of the first barrier rib material.
Since it is lower than the softening point of the rear rib material, the barrier
You can change the shape of the upper part of the
A discharge display panel can be created.

[0028]

[0029]

[0030]

[0031]

According to the second aspect of the present invention, in the gas discharge display panel having the predetermined pattern on the substrate and the barrier rib forming the discharge space, the inorganic powder is used as the base and the substrate is formed on the substrate. The barrier rib material formed with a predetermined thickness and removable by sandblasting is sandblasted using a sandblasting-resistant mask formed by laser annealing the upper surface of the barrier rib material with a predetermined thickness and pattern, and the sandblasting resistance is improved. Since the barrier rib material left in the same pattern as the mask and the barrier rib formed by baking the sandblast resistant mask, high definition and large screen are possible,
In addition, a gas discharge display panel that is easy to manufacture can be realized.

Further, according to the method of manufacturing the gas discharge display panel of the first method of the present invention, in forming the barrier rib of the gas discharge display panel, the first powder which is made of the inorganic powder as a base and can be removed by sandblasting is used. A step of forming a barrier rib material with a predetermined thickness on a substrate, a second barrier rib material having an inorganic powder as a base and an additive for imparting sandblast resistance added thereto, and having a predetermined thickness on the first barrier rib material. Of forming the second barrier rib material
Unnecessary parts are removed by laser processing and patterned into a predetermined shape.
To form a sandblast resistant mask
Degree, the first barrier rib member, and the first barrier rib material left step and the sandblast resistance mask the same pattern to sandblasting using the sandblast resistance mask, the sandblast resistance mask
Since the method includes the step of firing and to form the barrier ribs, the number of manufacturing steps can be reduced, and a gas discharge display panel with high accuracy and easy manufacturing can be realized.

Further, according to the method of manufacturing the gas discharge display panel of the second method of the present invention, in forming the barrier rib of the gas discharge display panel, the barrier rib material which is made of the inorganic powder and is removable by sandblasting is used. A step of forming a sandblast-resistant mask by laser annealing the upper surface of the barrier rib material with a predetermined thickness and pattern on the substrate, a step of forming the barrier rib material on the substrate with a predetermined thickness, and a step of forming the barrier rib material with the sandblast-resistant mask. Sandblasting with the sandblasting step, and the barrier rib material left in the same pattern as the sandblast resistant mask ,
Since the method includes the step of forming the barrier rib by firing the sandblast resistant mask , the number of manufacturing steps can be further reduced, and a gas discharge display panel with high accuracy and easy manufacturing can be realized.

[Brief description of drawings]

FIG. 1 is a process diagram showing a method of forming barrier ribs of a gas discharge display panel according to Embodiment 1 of the present invention.

FIG. 2 is a process drawing showing a method of forming barrier ribs of a gas discharge display panel according to Embodiment 6 of the present invention.

FIG. 3 Barrier rib formation of a conventional gas discharge display panel
It is process drawing which shows a method.

[Explanation of symbols]

1 Substrate, 2 First Barrier Rib Material, 9 Second Barrier Rib Material 10, 13 Mask, 5 Abrasive Material, 11, 14,
17 Barrier rib, 12 Sandblast resistant material, 15
Partially sintered area, 16 laser light.

Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) H01J 9/02 H01J 11/02

Claims (4)

(57) [Claims] 1. A gas discharge display panel having a predetermined pattern on a substrate and having barrier ribs for forming a discharge space, wherein the inorganic powder is used as a base and is formed to have a predetermined thickness on the substrate and removed by sandblasting. A possible first barrier rib material is formed with a predetermined thickness on the first barrier rib material, and an additive that imparts sandblast resistance to the inorganic powder as a base is added to the first barrier rib material.
Sandblasting using a sandblasting-resistant mask formed by patterning into a predetermined shape by removing unnecessary portions of the second barrier rib material having a softening point lower than the softening point of the material by laser processing. Discharge display panel having barrier ribs formed by firing the first barrier rib material and the sandblast resistant mask that are left in the same pattern as the protective mask. 2. A gas discharge display panel having a predetermined pattern on a substrate and having barrier ribs for forming a discharge space, wherein inorganic powder is used as a substrate, and the substrate is formed to have a predetermined thickness and removed by sandblasting. The possible barrier rib material is sandblasted using a sandblast resistant mask formed by laser annealing the upper surface of the barrier rib material with a predetermined thickness and pattern, and the barrier rib material left in the same pattern as the sandblast resistant mask. And a barrier rib formed by firing the sandblast resistant mask. 3. A step of forming a first barrier rib material having a predetermined thickness on a substrate by using an inorganic powder as a base in forming a barrier rib of a gas discharge display panel, the inorganic powder being a base material. A step of forming a second barrier rib material having a predetermined thickness on the first barrier rib material, which is a base material and to which an additive imparting sandblast resistance is added, by laser processing an unnecessary portion of the second barrier rib material; Removing and patterning into a predetermined shape to form a sandblast resistant mask, sandblasting the first barrier rib material using the sandblast resistant mask, and leaving the same pattern as the sandblast resistant mask. The barrier ribs are formed by firing the first barrier rib material and the sandblast resistant mask that have been formed. A method of manufacturing a gas discharge display panel, comprising steps. 4. When forming barrier ribs of a gas discharge display panel, a step of forming a barrier rib material, which is made of an inorganic powder and is removable by sandblasting, with a predetermined thickness on a substrate, and the upper surface of the barrier rib material is predetermined. A step of forming a sandblast resistant mask by laser annealing with a thickness and a pattern, the step of sandblasting the barrier rib material using the sandblast resistant mask, and the step of leaving the same pattern as the sandblast resistant mask. A method of manufacturing a gas discharge display panel, comprising a step of firing a barrier rib material and the sandblast resistant mask to form the barrier rib.