JPH10149764A - Manufacture of plasma display panel member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the process and lower the cost. SOLUTION: A multi-layered material 12 produced by orderly arranging three-types of phosphor layers 21, 22 and 23 emitting red-, green-, and blue-color luminescence, respectively, while sandwiching barrier material layers 20 between neighboring phosphor layers on a supporting film 11, cutting the multi-layered material 12 vertically to the layered direction while setting a barrier layer on the top to give a sheet-like material 13 stuck to the supporting film, and the sheet-like material 13 stuck to the supporting film is fired. Consequently, a plasma display panel member comprising a substrate, barriers, and phosphor bodies positioned between the substrate and a barrier and between neighboring barriers can be easily manufactured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a process for manufacturing a plasma display panel (PDP), and more particularly, to a PD as a back plate or a front plate constituting a PDP.
The present invention relates to a method for manufacturing a P member.

[0002]

2. Description of the Related Art In general, a PDP has a structure in which a pair of electrodes arranged regularly on two opposing glass substrates are provided, and a gas mainly composed of Ne, Xe or the like is sealed between the electrodes. Then, a voltage is applied between these electrodes,
By generating a discharge in a minute cell around the electrode, each cell emits light to perform display. In order to display information, regularly arranged cells are selectively caused to emit light. There are two types of PDPs, a direct current type (DC type) in which the electrodes are exposed to the discharge space, and an alternating current type (AC type) in which the electrodes are covered with an insulating layer. And a refresh driving method and a memory driving method.

FIG. 1 shows a configuration example of an AC type PDP. This figure shows the front plate and the rear plate separated from each other. As shown, two glass substrates 1 and 2 are arranged in parallel with each other and face each other, and both become the rear plate. The barriers 3 provided on the glass substrate 2 in parallel to each other are held at a constant interval. On the back side of the glass substrate 1 serving as the front plate, a composite electrode composed of a transparent electrode 4 and a bus electrode 5 serving as a metal electrode is formed parallel to each other, and a dielectric layer 6 is formed to cover the composite electrode. Further, a protective layer 7 (MgO layer) is formed thereon. On the front side of the glass substrate 2 serving as a back plate, address electrodes 8 are formed between the barriers 3 so as to be perpendicular to the composite electrode and parallel to each other.
Are formed, and a phosphor 10 is provided so as to cover the wall surface of the barrier 3 and the cell bottom surface. This AC type PDP
Is a surface discharge type, which has a structure in which an AC voltage is applied between composite electrodes on the front plate to discharge by an electric field leaking into space.
In this case, since the alternating current is applied, the direction of the electric field changes according to the frequency. Then, the phosphor 10 emits light by the ultraviolet light generated by the discharge, so that an observer can visually recognize the light transmitted through the front plate.

In the back plate of the PDP, an address electrode 8 is formed on a glass substrate 2, a dielectric layer 9 is formed so as to cover the address electrode 8, and a barrier 3 is formed. It is manufactured by filling the fluorescent material 10 into the substrate. As a method of forming an electrode, a method of forming a film of an electrode material on a substrate by a vacuum evaporation method, a sputtering method, a plating method, a thick film method, and the like, patterning the film by a photolithography method, and using a thick film paste A method of patterning by a screen printing method is known.
The dielectric layer 9 is applied by a screen printing method. The barrier is formed by overprinting by screen printing, a sandblast method, or the like, and the phosphor is selectively filled between the barriers by screen printing.

[0005]

By the way, in order to spread the PDP, it is necessary to lower the product price by increasing the productivity and manufacturing the PDP at low cost. However, as described above, even if one back plate is taken, the manufacturing process is complicated, and it is difficult to reduce the cost unless such a process is changed.

SUMMARY OF THE INVENTION The present invention has been made to meet the above-mentioned demands, and an object of the present invention is to provide a method of manufacturing a PDP member in which the steps are simplified and the cost is reduced in order to reduce the product price of the PDP. Specifically, the present invention provides a method for forming a barrier and a phosphor located therebetween on a substrate.

[0007]

In order to achieve the above object, a method of manufacturing a PDP member according to the present invention is characterized by including at least the following steps. (1) A multilayer laminate in which three kinds of phosphor material layers having emission colors of red, green, and blue, respectively, are laminated on a support film such that the phosphor material layers are regularly arranged with a barrier material layer interposed therebetween. The process of making. (2) A step in which a sheet having a shape obtained by cutting the multilayer laminate at a height of a barrier in a direction perpendicular to the lamination direction is attached to a substrate. (3) A step of firing the sheet-like material attached to the substrate.

[0008]

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

First, a barrier material paste and three kinds of phosphor material pastes having red, green and blue emission colors are prepared. Then, as shown in FIG. 2, a barrier material paste and a phosphor material paste are alternately coated on the support film 11 to produce a multilayer laminate 12. Alternatively, the barrier material layer and the phosphor material layer previously formed on another film may be sequentially transferred onto the support film 11 to be laminated. In this case, a red (R) phosphor material layer 21, a green (G) phosphor material layer 22, and a blue (B) phosphor material layer 23 are regularly arranged with the barrier material layer 20 interposed therebetween as shown in the figure. It is laminated so that it is in a state. The lamination may be started from any layer as long as they are arranged regularly in this way.

As described above, the layers may be laminated one by one by a coating method or a film transfer method. Another method is to laminate six layers on a film (barrier material layer / red phosphor material layer / barrier). Material layer / green phosphor material layer / barrier material layer / blue phosphor material layer) are prepared in advance by a coating method or a film transfer method, and the six layers are sequentially transferred onto the support film 11. A final multi-layered laminate may be produced by lamination.

The barrier material paste contains glass frit and resin as main components. The glass frit has a softening point of 350 to 650 ° C and a thermal expansion coefficient α ₈₀₀ of 60 to 10
Those having a ^{concentration of} 0 × 10 ⁻⁷ / ° C. are used. If the softening point of the glass frit exceeds 650 ° C., it is necessary to raise the firing temperature, and depending on the lamination object, it is not preferable because it is thermally deformed. It is not preferable because glass frit is fused and voids and the like are generated in the layer. If the coefficient of thermal expansion is out of the range of 60 to 100 × 10 ⁻⁷ / ° C., the PDP
In the case of (1), the difference from the coefficient of thermal expansion of the glass substrate is large, which causes distortion and the like, which is not preferable. Also, as an inorganic component,
2 inorganic powders and 2 inorganic pigments in addition to glass frit
A mixture of more than one species may be used.

The inorganic powder is an aggregate, and is added as needed. This inorganic powder prevents casting during firing,
It is intended to improve the denseness and has a softening point higher than that of the glass frit. For example, each of aluminum oxide, boron oxide, silica, titanium oxide, magnesium oxide, calcium oxide, strontium oxide, barium oxide, calcium carbonate, etc. Inorganic powder can be used, average particle size 0.1 ~
20 μm is used. The usage ratio of inorganic powder is
0-30 inorganic powders per 100 parts by weight of glass frit
It is recommended to use parts by weight.

The inorganic pigment is added as needed to reduce the reflection of external light from the PDP, for example, and to improve the contrast in practical use. , Co-Cr-Fe, Co-Mn
-Fe, Co-Fe-Mn-Al, Co-Ni-Cr-
Fe, Co-Ni-Mn-Cr-Fe, Co-Ni-A
l-Cr-Fe, Co-Mn-Al-Cr-Fe-Si
And the like. Examples of the fire-resistant white pigment include titanium oxide, aluminum oxide, silica, and calcium carbonate.

The resin is contained as a binder of an inorganic component and for the purpose of improving transferability. Examples of the resin include methyl acrylate, methyl methacrylate, ethyl acrylate, ethyl methacrylate, and n-
Propyl acrylate, n-propyl methacrylate,
Isopropyl acrylate, isopropyl methacrylate, sec-butyl acrylate, sec-butyl methacrylate, isobutyl acrylate, isobutyl methacrylate, tert-butyl acrylate, tert
-Butyl methacrylate, n-pentyl acrylate,
n-pentyl methacrylate, n-hexyl acrylate, n-hexyl methacrylate, 2-ethylhexyl acrylate, 2-ethylhexyl methacrylate, n
-Octyl acrylate, n-octyl methacrylate, n-decyl acrylate, n-decyl methacrylate, hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate, styrene, α-methylstyrene, N-vinyl-2-pyrrolidone, etc. And cellulose derivatives such as ethyl cellulose. Moreover, a water-soluble resin is also included. Examples of the water-soluble resin include polyvinyl alcohol, poly N-vinylpyrrolidone, hydroxyethyl cellulose, hydroxypropyl cellulose, methyl cellulose, carboxymethyl cellulose, casein and the like.

The barrier material is dissolved or dispersed in a solvent, applied as a paste, and dried. As the solvent, methanol,
Anones such as ethanol, isopropanol, acetone, methyl ethyl ketone, toluene, xylene and cyclohexanone, methylene chloride, 3-methoxybutyl acetate, ethylene glycol monoalkyl ethers, ethylene glycol alkyl ether acetates, diethylene glycol monoalkyl ethers, diethylene glycol monoalkyl Ether acetates, propylene glycol monoalkyl ethers, propylene glycol monoalkyl ether acetates, dipropylene glycol monoalkyl ethers, dipropylene glycol monoalkyl ether acetates, and terpenes such as α- or β-terpionaire. .
Further, a plasticizer, a dispersant, an antisettling agent, an antifoaming agent, a leveling agent, a thickener, and the like may be added to the barrier material paste as needed.

The phosphor material paste contains a phosphor and a resin as main components. The resin and the solvent for pasting are the same as for the barrier material paste. Alternatively, it is dissolved or dispersed in the same solvent as that of the barrier material paste, applied as a paste, and dried.

As the phosphor, an inorganic phosphor which emits light when excited by ultraviolet light is used. For example, when the emission color is red, Y ₂ O ₃ : Eu, Y ₂ SiO ₅ : Eu,
Y ₃ Al ₅ O ₁₂ : Eu, Zn ₃ (PO ₄ ) ₂ : Mn, Y
BO ₃ : Eu, (Y, Gd) BO ₃ : Eu, ScB
O ₃ : Eu, LuBO ₃ : Eu and the like are exemplified.

The emission color of green is Zn ₂ Si
O ₄ : Mn, BaAl ₁₂ O ₁₉ : Mn, SrAl ₁₃ O ₁₉ :
Mn, CaAl ₁₂ O ₁₉ : Mn, YBO ₃ : Tb, BaM
gAl ₁₄ O ₂₃ : Mn, LuBO ₃ : Tb, GdBO ₃ :
Tb, ScBO ₃ : Tb, Sr ₆ Si ₃ O ₃ Cl ₄ : E
u etc. are illustrated.

As a light emitting color of blue, Y ₂ SiO
₅ : Ce, CaWO ₄ : Pb, BaMgAl ₁₄ O ₂₃ : E
u etc. are illustrated.

Specifically, as the barrier material paste,
For example, a paste having the following composition A may be used. This paste may be applied with a comma coater, the application speed is 100 mm / s, and the gap is 300 to 100 μm.
(Depending on the width of the barrier). And drying after application is 1
What is necessary is just to carry out at 20 degreeC for 5 minutes.

<Composition A> Lead borosilicate glass 60% by weight Zirconia (ZrO ₂ ) 10% by weight Inorganic black pigment (Fe, Mn, Cr type) 10% by weight Ethyl cellulose 3% by weight Dimethyl phthalate 5% by weight Propylene glycol monoethyl 12% by weight of ether

As the phosphor material paste, for example, a paste having the following composition B may be used. The application of this paste may be performed with a comma coater. The application speed is 100 mm / s, and the gap is 300 to 100 μm (depending on the distance between barriers). And drying after application is 1
It may be performed at 20 ° C. for 10 minutes.

<Composition B> Phosphor 30% by weight Blue BaMg ₂ Al ₁₄ O ₂₃ : Eu Green Zn ₂ SiO ₄ : Mn Red Y ₂ O ₂ : Eu Ethyl cellulose 40% by weight Dimethyl phthalate 5% by weight Propylene glycol monoethyl ether 25% by weight

In order to obtain a desired multilayer laminate with the above-mentioned barrier material paste and phosphor material paste, for example,
Repeating the application and drying of each paste, barrier material layer and blue,
A set of laminates (six layers) of a repeating unit composed of green and red phosphor material layers is prepared, and the laminates are successively stacked on a support film by a thermocompression roll at 100 ° C. and 50 mm / s. Then, it is preferable to repeat the process until the number of layers reaches a specified value.

Next, the multi-layer laminate produced as described above is cut at the height of the barrier in a direction perpendicular to the lamination direction, and a sheet is adhered to the substrate. FIG. 3 shows the relationship between the multilayer laminate 12 and the sheet 13, and FIG. 4 shows a substrate 31 to which the sheet 13 is attached. As shown in FIG. 4, in order to attach the sheet-like material 13 to the substrate 31, the end face (the surface A in FIG. 3) of the multilayer laminate 12 that has been neatly cut and the substrate 31 are bonded together. The end face side of the multilayer laminate 12 has a predetermined width (a-
(a) It is good to cut in parallel with the substrate 31 so as to slice. Laser or water jet can be used for cutting.

Although not shown in the drawings, the substrate 31
If necessary, an underlayer may be formed with a glass paste or the like, or an electrode may be formed by a screen printing method or a photolithography method using a photosensitive material. May be provided.
The above-mentioned sheet material is stuck on such a substrate.

After the sheet 13 is attached to the substrate 31 as shown in FIG. 4, the sheet 13 is fired.
As a result of this firing step, as shown in FIG. 5, the resin component jumps from the barrier material layer, the barrier 32 binds to the substrate 31, and the organic components in the phosphor material layer are burned off and red and red, respectively.
Phosphors 33, 34, 35 having green and blue emission colors are bonded to the wall surface of the barrier 32 and the cell bottom surface.

[0028]

As described above, according to the present invention,
A multilayer laminate was prepared by alternately laminating the barrier material layers and the phosphor material layers, and a sheet-like material cut in a direction perpendicular to the lamination direction at the height of the barrier was attached to the substrate. Since the barrier and the phosphor can be formed in a simple process of setting the state and firing the sheet-like material attached to the substrate, the manufacturing process of the PDP member including these can be simplified and the cost can be reduced. it can.

[Brief description of the drawings]

FIG. 1 is a structural diagram showing an example of a configuration of an AC type plasma display panel in a state where a front plate and a back plate are separated from each other.

FIG. 2 is a sectional view showing a multilayer laminate.

FIG. 3 is an explanatory diagram showing a relationship between a multilayer laminate and a sheet-like material.

FIG. 4 is a cross-sectional view showing a substrate to which a sheet is attached.

FIG. 5 is a cross-sectional view showing the substrate after firing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front plate 2 Back plate 3 Barrier rib 4 Sustain electrode 5 Bus electrode 6 Dielectric layer 7 Protective layer (MgO layer) 8 Address electrode 9 Dielectric layer 10 Phosphor 11 Support film 12 Multilayer laminate 13 Sheet material 20 Barrier material Layers 21, 22, 23 Phosphor material layer 31 Substrate 32 Barrier 33, 34, 35 Phosphor

Claims (1)

[Claims] 1. A method of manufacturing a plasma display panel member, comprising at least the following steps. (1) A multilayer laminate in which three kinds of phosphor material layers having emission colors of red, green, and blue, respectively, are laminated on a support film such that the phosphor material layers are regularly arranged with a barrier material layer interposed therebetween. The process of making. (2) A step in which a sheet having a shape obtained by cutting the multilayer laminate at a height of a barrier in a direction perpendicular to the lamination direction is attached to a substrate. (3) A step of firing the sheet-like material attached to the substrate.