JP2005281385A - Method for producing inorganic powder-containing paste and the resultant inorganic powder-containing paste, and method for producing display panel member using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an inorganic powder-containing paste based on an organic vehicle containing foreign matter little, dispersed homogeneously even if the resin content of the vehicle is high. <P>SOLUTION: A method for producing the inorganic powder-containing paste comprising inorganic powder, organic solvents and a binder resin is provided, comprising (A) the step of preparing the organic vehicle by dissolving the binder resin in two or more organic solvents with different boiling points, (B) the step of filtering the organic vehicle, (C) the step of evaporating the organic solvents in the organic vehicle and (D) the step of dispersing the inorganic powder in the organic vehicle. The inorganic powder-containing paste thus obtained is provided. Further, a method for producing display panels using the above paste is also provided. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a method for producing an inorganic powder-containing paste, in particular, an organic vehicle for use in an inorganic powder-containing paste, an inorganic powder-containing paste using an organic vehicle produced by the production method, and a plasma display using the same. The present invention also relates to a method for manufacturing a member for a display panel such as a plasma address liquid crystal display.

  Thick film paste has long been developed as a traditional industry trap, but has been applied to the electronics industry due to product reproducibility and high productivity printing technology. A thick film paste is generally made into a paste by dispersing a powdered inorganic substance in a vehicle made of a resin and a solvent. Examples of the paste containing inorganic powder include conductor paste for wiring and electrodes, resistor paste for forming a resistor, capacitor paste for producing a capacitor, glass paste for covering and protecting an element and insulating a wiring junction and so on. In addition, as an inorganic powder-containing paste used in a plasma display panel (hereinafter, also abbreviated as PDP), a conductive paste for electrode formation, a glass paste for forming dielectric layers and barrier ribs, and a phosphor powder are dispersed. Phosphor paste, and black paste used for forming black stripes on the front plate.

  These inorganic powder-containing pastes have so far been formed into a film by screen printing. However, in producing a display panel member such as a PDP, it is necessary to form a thick film with a large area. In screen printing, printing must be repeated many times to obtain a desired film thickness, which is very inefficient. Therefore, a doctor blade method or a slit die coater method has been proposed as a method for forming a thick film by a single coating.

  The inorganic powder-containing paste used in this method of forming a thick film by one application is required to have a performance different from that of screen printing paste. For example, in screen printing, even if there is a coating film defect, it is overcoated so that it is difficult to cause a coating film defect. It is necessary to refine the filtration. Further, in order to form a thick film at one time, it is necessary to increase the resin concentration in the vehicle.

  Conventionally, as a method for producing a vehicle for inorganic powder-containing paste, the viscosity is adjusted by dissolving polymers such as ethyl cellulose, nitrocellulose, polyvinyl alcohol, and polyvinyl butyral in organic solvents such as diethylene glycol monobutyl ether acetate and terpineol. Is used (see, for example, Patent Document 1).

However, when the resin concentration in the organic vehicle is high, the resin is not sufficiently dissolved and the incompletely dissolved product increases, or the viscosity is high. There was a problem that the manufacturing cost was high.
JP-A-6-325618

  Therefore, in view of the above problems, an object of the present invention is to produce an organic vehicle by dissolving a binder resin with two or more organic solvents having different boiling points, and a part of the organic vehicle after filtration without impairing the properties as a paste. It is to provide a method for producing an inorganic powder-containing paste that can improve the filtration characteristics, an inorganic powder-containing paste produced by the method, and a method for producing a display panel member using the same. .

In order to solve the above problems, a method for producing an inorganic powder-containing paste according to the present invention is a method for producing an inorganic powder-containing paste comprising an inorganic powder, an organic solvent, and a binder resin, and includes the following (A) to (D): These steps are sequentially performed.
(A) A step of producing an organic vehicle by dissolving a binder resin with two or more organic solvents having different boiling points (B) A step of filtering the organic vehicle (C) A step of volatilizing a part of the organic solvent in the organic vehicle (D) Dispersing the inorganic powder in the organic vehicle

  Moreover, the inorganic powder containing paste which concerns on this invention consists of what was manufactured by such a method.

  Furthermore, the manufacturing method of the member for display panels which concerns on this invention is a manufacturing method of the member for display panels including the process by which an inorganic powder containing paste is apply | coated at least on a board | substrate, Comprising: An inorganic powder containing paste is as above-mentioned. It consists of a method characterized by being a paste containing inorganic powder.

  ADVANTAGE OF THE INVENTION According to this invention, when manufacturing an inorganic powder containing paste, even if the resin content density | concentration in a vehicle is high, it can melt | dissolve uniformly and can provide the method which can manufacture an organic vehicle with few foreign materials at low cost. Furthermore, since the inorganic powder containing paste with few foreign substances can be obtained, the method of manufacturing the member for plasma display panels with a high yield can be provided.

Hereinafter, the present invention will be described in detail together with preferred embodiments.
The inorganic powder-containing paste of the present invention comprises an inorganic powder, an organic vehicle, and an organic solvent and additive component for adjusting the viscosity. The content of the inorganic powder is preferably 35 to 95% by weight, and more preferably 40 to 90% by weight because the shrinkage ratio during firing is small and the shape change due to firing is small. Examples of the inorganic powder in the paste include glass powder, metal powder, refractory filler, and phosphor powder.

The glass powder is preferably a thermal expansion coefficient of 50 to 400 ° C. is ^{50 × 10 -7 ~100 × 10 -7} . Moreover, it is required as a partition wall for electrical insulation, strength, coefficient of thermal expansion, denseness of insulating layer, etc. by blending silicon oxide in glass in the range of 3 to 60% by weight and boron oxide in the range of 5 to 50% by weight. Improved electrical, mechanical and thermal properties. The glass powder in the present invention is preferably mainly composed of a low-melting glass powder. The glass transition temperature of the low melting glass powder is preferably 430 to 500 ° C., and the glass softening point is preferably 470 to 620 ° C. When the glass transition temperature and the glass softening point are within such ranges, the distortion of the substrate is small during firing, and a dense partition layer can be obtained. The particle diameter of the glass powder is selected in consideration of the line width and height of the partition wall to be produced. The center diameter of the volume-based distribution is 1 to 6 μm, the maximum particle size is 30 μm or less, the specific surface area is 1.5 to It is preferably 4 cm ² / g.

  As metal powder, what contains at least 1 sort (s) chosen from the group of Ag, Au, Pd, Ni, Cu, Al, and Pt can be used. These can be used independently, in an alloy state, or in a mixed powder state. As the particle diameter of the metal powder, the center diameter of the volume-based distribution is preferably 0.7 to 6 μm. More preferably, it is 1.3-4 micrometers. When the particle diameter is in this range, a fine fine pattern can be formed.

As the metal oxide powder, a material containing at least one selected from Al ₂ O ₃ , Cu ₂ O, Ag ₂ O, Au ₂ O, and FeO can be used. These can be used independently, in an alloy state, or in a mixed powder state. As the particle diameter of the metal powder, the center diameter of the volume-based distribution is preferably 0.7 to 6 μm. More preferably, it is 1.3-4 micrometers. When the particle diameter is in this range, a fine fine pattern can be formed.

  The refractory filler is preferably added to stabilize the shape during firing. As the refractory filler, those that do not soften at a firing temperature of about 500 to 650 ° C. can be widely used, and high melting point glass and ceramic powders such as alumina, magnesia, calcia, cordierite, silica, mullite, zircon, zirconia are exemplified. it can. In order to reduce external light reflection of the PDP and increase the practical contrast, when the partition walls are dark, Co-Cr-Fe, Co-Mn-Fe, Co-Fe-Mn are used as refractory black pigments. -Al, Co-Ni-Cr-Fe, Co-Ni-Mn-Cr-Fe, Co-Ni-Al-Cr-Fe, Co-Mn-AL-Cr-Fe-Si pigments may be used. . On the other hand, when whitening the partition for the purpose of effectively guiding the light emission of the phosphor to the front surface of the panel, titania or the like may be used as a fire-resistant white pigment.

As the phosphor powder, for example, in red, Y ₂ O ₃ : Eu, YVO ₄ : Eu, (Y, Gd) BO ₃ : Eu, Y ₂ O ₃ S: Eu, γ-Zn ₃ (PO ₄ ) ₂ : Mn, (ZnCd) S: Ag + In ₂ O _{3 and the} like. In green, Zn ₂ GeO ₂ : M, BaAl ₁₂ O ₁₉ : Mn, Zn ₂ SiO ₄ : Mn, LaPO ₄ : Tb, ZnS: Cu, Al, ZnS: Au, Cu, Al, (ZnCd) S: Cu, Al, Zn ₂ SiO ₄ : Mn, As, Y ₃ Al ₅ O ₁₂ : Ce, CeMgAl ₁₁ O ₁₉ : Tb, Gd ₂ O ₂ S: Tb, Y ₃ Al ₅ O ₁₂ : Tb, ZnO: Zn, etc. It is done. In blue, Sr ₅ (PO ₄ ) ₃ Cl: Eu, BaMgAl ₁₄ O ₂₃ : Eu, BaMgAl ₁₆ O ₂₇ : Eu, BaMg ₂ Al ₁₄ O ₂₄ : Eu, ZnS: Ag + red pigment, Y ₂ SiO ₃ : Ce, etc. Is mentioned.

  The organic vehicle in the present invention is obtained by dissolving a binder resin in an organic solvent, and a known one can be used. However, the binder resin is oxidized or / and decomposed or / and vaporized at the time of firing, and the carbide is contained in the inorganic substance. Preferably, it does not remain. Specifically, cellulose resins such as ethyl cellulose, methyl cellulose, nitrocellulose, cellulose acetate, cellulose propionate, cellulose butyrate, hydroxypropyl cellulose, or methyl (meth) acrylate, ethyl (meta ) A polymer such as acrylate, normal butyl (meth) acrylate, isobutyl (meth) acrylate, isopropyl (meth) acrylate, 2-ethylmethyl (meth) acrylate, 2-hydroxylethyl (meth) acrylate or Acrylic resin comprising a polymer, poly -α- methyl sulfone, polyvinyl alcohol, polybutene, and the like. When the binder resin is photosensitive, it can be obtained by polymerization or copolymerization of components selected from compounds having a carbon-carbon double bond. In that case, by copolymerizing unsaturated acid such as acrylic acid, methacrylic acid, itaconic acid, crotonic acid, maleic acid, fumaric acid, vinyl acetic acid or unsaturated carboxylic acid such as these acid anhydrides, The developability with an alkaline aqueous solution can be improved.

  In the organic vehicle of the present invention, it is important to use two or more organic solvents having different boiling points when the binder resin is dissolved in the organic solvent. If the binder resin concentration in the organic vehicle is increased in order to form a thick paste containing inorganic powder, the binder resin will be insufficiently dissolved, resulting in an incompletely dissolved solution and high viscosity. When using, there is a problem that the filtration time is long and the production cost is high. Therefore, in the present invention, a low-boiling point solvent is added in addition to the binder resin dissolving solvent, the amount of the solvent is increased to improve the solubility, and the viscosity is lowered to shorten the filtration time. After filtration, the low boiling point solvent is volatilized to produce an organic vehicle having the desired amount and viscosity of the organic solvent.

  The boiling point difference of the organic solvent is preferably 30 ° C. or higher, more preferably 50 ° C. or higher. By using an organic solvent having a boiling point difference of 30 ° C. or more, it is easy to volatilize a low boiling point organic solvent after filtration. When the boiling point difference is less than 30 ° C., the low boiling point organic solvent remains, and the target organic solvent amount and viscosity It may be difficult to obtain an organic vehicle having

  The low-boiling organic solvent preferably has a boiling point in the range of 100 to 180 ° C, more preferably in the range of 100 to 160 ° C. When the boiling point of the low-boiling organic solvent is in the range of 100 to 180 ° C., the low-boiling organic solvent is easily volatilized after filtration, and the time for volatilizing the low-boiling organic solvent is further shortened.

Two or more organic solvents having a difference in boiling point preferably have a solubility parameter in the range of 8.5 to 9.5. More preferably, it exists in the range of 8.7-9.4. When the solubility parameter is in the range of 8.5 to 9.5, the solubility of the binder resin can be improved. When an organic solvent having a solubility parameter outside this range is used, the solubility of the binder resin may not be improved even if the amount of the organic solvent is increased. Furthermore, even when an organic solvent having good solubility is combined, the binder resin may be precipitated when the low boiling point organic solvent is volatilized after filtration. By using an organic solvent having a solubility parameter in the range of 8.5 to 9.5, a good organic vehicle can be obtained even if the low-boiling organic solvent is volatilized after filtration. The solubility parameter (SP) can be determined using the following Hidebrand equation.
SP = K (γ / Vm ^1/3 ) ^0.43
K: constant, Vm: molecular capacity, γ: surface tension The surface tension can be determined by the maximum bubble pressure method using the following equation (1).
γ = 1/2 gR (ρ1h1-ρh)
ρ1: Manometer liquid density h: Manometer height difference g: Gravitational constant ρ1h1: Value measured by pressure gauge ρ: Measurement solvent density h: Capillary tip-to-liquid surface distance R: Capillary radius

  Specific organic solvents include diethylene glycol monobutyl ether acetate, ethylene glycol monobutyl ether acetate, diethylene glycol monobutyl ether, triethylene glycol monobutyl ether, ethylene glycol mono-2-ethylhexyl ether, diethylene glycol mono-2-ethylhexyl ether, 2-ethyl- 1,3-hexanediol, terpineol, propylene glycol methyl ether, dipropylene glycol methyl ether, tripropylene glycol methyl ether, propylene glycol-n-propyl ether, dipropylene glycol-n-propyl ether, propylene glycol-n-butyl ether, Propylene glycol methyl ether acetate, propylene Glycol diacetate, propylene glycol phenyl ether, 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 2,2,4-trimethyl-1,3-pentanediol diisobutyrate, dipropylene glycol- n-butyl ether, tripropylene glycol-n-butyl ether, dipropylene glycol dimethyl ether and the like and isopropyl alcohol, n-propyl alcohol, sec-butyl alcohol, isobutyl alcohol, 3-pentanol, n-butyl alcohol, sec-butyl alcohol, isoamyl Alcohol, methyl amyl alcohol, n-amyl alcohol, methyl n-butyl ether, 1,4-dioxane, diethyl cellosolve, n-butyl ether, isopropyl acetate, n-acetate Pill, isobutyl acetate, n-butyl acetate, diethyl carbonate, isoamyl acetate, methyl cellosolve acetate, methyl amyl acetate, ethyl lactate, propylene glycol methyl ether, propylene glycol propyl ether, 2-hydroxy-4-methyl-2-pentanone, 2- A combination of methyl-1-butanol, 3-methyl-2-butanol and the like can be mentioned.

  The organic vehicle can be dissolved by using a known heated stirring dissolver or the like, but the stirrer preferably has an explosion-proof structure. The dissolution conditions vary depending on the binder resin and organic solvent used, but are usually performed at a temperature of 25 to 150 ° C. for about 1 to 72 hours.

  Although the density | concentration of the binder resin in an organic vehicle is chosen by the applicability | paintability and coating film thickness of an inorganic powder containing paste, it is the range of 5 to 50 weight% normally.

  In two or more organic solvents having a difference in boiling point, the ratio of the high-boiling organic solvent (A) to the low-boiling organic solvent (B) may be within the range of A / B = 80/20 to 20/80. More preferably, it is the range of A / B = 70 / 30-30 / 70. When the ratio of A / B is within this range, the solubility of the organic vehicle can be improved and the undissolved material is reduced. Moreover, filterability can be improved and the low boiling point organic solvent after filtration can be volatilized easily.

  The organic vehicle is then filtered. Since filtration is performed in order to separate undissolved binder resin and mixed foreign matters, a membrane separation method such as a normal filter paper or a filter is sufficient. The membrane separation method also saves energy because substances are separated mainly by pressure. Specifically, for example, a cartridge filter is set in a filter holder, and the organic vehicle is pushed out by applying a pressure of about 0.01 to 1.0 Pa.

  A known filter can be used for filtration. For example, an element filter obtained by molding pleated media with polypropylene or stainless steel can be preferably used. Moreover, the filtration time can be shortened by using a filter having a large effective filtration area.

  It is preferable to use a filter with a pore size as small as possible, because the filtration accuracy is improved, a paste is formed, and defects during paste application can be suppressed. The filter pore size is preferably 5 μm or less, more preferably 2 μm or less.

  After filtration, the low-boiling solvent in the organic vehicle is volatilized to finish the organic vehicle with the desired viscosity. As a method for evaporating the low boiling point solvent, a known concentrating device or the like can be used. For example, using a rotary evaporator or the like, the rotation speed, bath temperature, vapor temperature, vacuum degree, etc. are adjusted according to the organic solvent. Further, it is preferable to combine a concentrator with a vacuum control unit, a vapor sensor, or the like because an operation suitable for the use conditions can be performed while suppressing the sudden boiling of the organic solvent.

  Examples of the additive component in the present invention include a photosensitive monomer, a photopolymerization initiator, a sensitizer, an ultraviolet absorber, a polymerization inhibitor, a plasticizer, an antioxidant, an antifoaming agent, and a thixotropic agent.

  As the photosensitive monomer, a compound having an active carbon-carbon unsaturated double bond is often used. As the functional group, monofunctional and polyfunctional compounds having a vinyl group, an allyl group, an acrylate group, a methacrylate group, or an acrylamide group can be applied. Specifically, 2- (2-ethoxyethoxy) ethyl acrylate, 1,3-butanediol diacrylate, pentaerythritol triacrylate, ditrimethylolpropane tetraacrylate, cyclohexyl methacrylate, ethylene glycol dimethacrylate, trimethylolpropane trimethacrylate And glycidyl methacrylate.

  Known and commonly used photopolymerization initiators, sensitizers, ultraviolet absorbers, polymerization inhibitors, plasticizers, antioxidants, antifoaming agents, thixotropic agents and the like can be used.

  The inorganic powder-containing paste of the present invention is prepared by preparing various components so as to have a predetermined composition, and then pre-dispersing with a mixer such as a planetary mixer, and homogeneously preparing with a dispersing and kneading means with a disperser such as a three-roller. To do.

  Next, an example in which an inorganic powder-containing paste using an organic vehicle produced by the method for producing an organic vehicle used for the inorganic powder-containing paste of the present invention is applied to a display panel member will be described.

  A stripe-shaped electrode is formed on a substrate by a photolithography method using a photosensitive silver paste as a writing electrode, and a dielectric paste is applied to the substrate, followed by firing at 500 to 600 ° C. to form a dielectric layer. Form.

  Furthermore, using a photosensitive glass paste on the dielectric layer, after pattern formation by a photolithography method, baking is performed at 500 to 600 ° C. for 10 to 60 minutes to form stripe-shaped pattern partition walls.

  The phosphor paste is formed on the barrier ribs thus formed. The method of forming the phosphor is not particularly limited, and examples thereof include a screen printing method, a method of discharging the phosphor paste from the die, and a photosensitive paste method. After the phosphor paste is applied and dried, for example, it is baked at 500 ° C. for 30 minutes to form phosphor layers on the side and bottom portions of the partition walls.

  Hereinafter, the present invention will be specifically described by way of examples. However, the present invention is not limited to this. The concentration (%) in the examples is% by weight.

Examples 1-5, Comparative Example 1
First, an organic vehicle was produced. 200 g of ethyl cellulose (manufactured by Hercules, grade: T-10) and the organic solvent shown in Table 1 were charged into a flask and dissolved at 60 ° C. for 4 hours. The viscosity of the obtained organic vehicle is shown in Table 1. Subsequently, a cartridge filter (manufactured by Advantech Toyo Co., Ltd., type: MCP-JX-C10S, particle capture rate:> 99% (1 μm)) is set in a filter holder (manufactured by Advantech Toyo Co., Ltd.), and a pressure of 0.1 MPa Filtered through. The filtration time is shown in Table 1.

  The filtered organic vehicle was charged into a rotary evaporator (manufactured by Yamato Kagaku Co., Ltd., model RE500), and the low boiling organic solvent was removed. The operating conditions of the rotary evaporator were 80 rpm and 150 ° C. The viscosity of the obtained organic vehicle is shown in Table 1. Next, a phosphor paste was produced using the obtained organic vehicle. 800 g of red phosphor powder (manufactured by Kasei Optonix, KX-504A), 800 g of the obtained organic vehicle, and 400 g of terpineol were mixed and pre-kneaded using a planetary mixer (manufactured by Tokushu Kika Kogyo Co., Ltd.). Time), the mixture was kneaded using three rollers to obtain a phosphor red paste.

  Similarly, a green phosphor paste and a blue phosphor paste were prepared. The green phosphor paste is 800 g of green phosphor powder (KX-506A, manufactured by Kasei Optonics), 800 g of the obtained organic vehicle, and 600 g of terpineol, and 800 g of blue phosphor powder (KX-501A, Kasei Optonics). And 800 g of the obtained organic vehicle and 700 g of terpineol.

  Next, a back plate of an AC (alternating current) type plasma display panel was formed using a 50-inch glass substrate (PD-200; manufactured by Asahi Glass Co., Ltd.).

  A striped electrode having a pitch of 140 μm, a line width of 60 μm, and a thickness of 4 μm after firing is formed on a substrate by photolithography using a photosensitive silver paste (manufactured by Toray Industries, Inc.) using a collected and treated inorganic powder as a writing electrode. Formed. There was no problem with pattern formation at this time. A dielectric paste (manufactured by Toray Industries, Inc.) was applied to this substrate and then baked at 550 ° C. to form a dielectric layer having a thickness of 10 μm.

  Further, after pattern formation by a photolithographic method using a photosensitive partition paste (manufactured by Toray Industries, Inc.), baking was performed at 570 ° C. for 15 minutes to form a striped partition pattern having a pitch of 140 μm, a line width of 20 μm, and a height of 100 μm. .

  Each color phosphor paste obtained on the barrier ribs thus formed was applied to the phosphor paste using a device (manufactured by Toray Industries, Inc.) that discharges the phosphor paste from the die, and baked (500 ° C., 30 minutes). Thus, a phosphor layer was formed on the side and bottom of the partition wall. The application state of the phosphor paste is shown in Table 1.

  Next, the front plate was produced by the following steps. First, ITO was formed on the same glass substrate as the back plate by sputtering, and then resist was applied, and a transparent electrode (manufactured by Toray Industries Inc.) having a thickness of 0.1 μm and a line width of 200 μm was formed by exposure / development processing and etching processing . Further, a bus electrode having a thickness of 10 μm after firing was formed by photolithography using a photosensitive silver paste (manufactured by Toray Industries, Inc.) made of black silver powder. Electrodes with a pitch of 140 μm and a line width of 60 μm were prepared.

  Furthermore, 20 μm of a transparent dielectric paste was applied on the electrode-formed front plate, and baked by holding at 430 ° C. for 20 minutes. Next, an MgO film having a thickness of 0.5 μm was formed by using an electron beam vapor deposition device so as to uniformly coat the formed transparent electrode, black electrode, and dielectric layer, thereby completing the front plate. The obtained front glass substrate was bonded and sealed to the rear glass substrate, and then a discharge gas was sealed, and a driving circuit was joined to produce a plasma display (PDP). Table 1 shows the result of observing the display by applying a voltage to this panel.

  The applicability of the phosphor paste using the organic vehicle obtained in Examples 1 to 3 was good. When the display was observed by applying a voltage to the PDP panel, the display state was good.

  In the organic vehicle obtained in Example 4, the binder resin was partially deposited after the low boiling point solvent was volatilized. After producing the phosphor paste using this, the phosphor layer was formed by an apparatus for discharging the phosphor paste from the die, but clogging occurred in a part of the die. When the phosphor layer was formed by repeating washing and coating of the die, the phosphor layer could be formed on the side and bottom of the partition wall without any problem. When the display was observed by applying a voltage to the PDP panel, the display state was good.

  In the organic vehicle obtained in Example 5, a large amount of the low boiling point solvent remained even after the low boiling point solvent was volatilized. Therefore, the viscosity of the obtained phosphor paste was lowered, and the phosphor layer on the side face of the partition wall was formed thin. It was. When the display was observed by applying a voltage to the PDP panel, the display state was good.

  In Comparative Example 1, an organic vehicle was produced without using a low boiling point solvent. This was filtered in the same manner as in Examples 1 to 5. However, when 100 g was filtered, the filter was clogged and filtration could not be performed. An attempt was made to produce a phosphor paste by preparing a phosphor paste without filtering the organic vehicle, but when applying the phosphor paste, the phosphor paste was clogged in the die, and the PDP could not be produced. In addition, the clogging of the die could not be resolved even after repeated washing and application of the die.

Claims (9)

A method for producing an inorganic powder-containing paste comprising an inorganic powder, an organic solvent, and a binder resin, wherein the following steps (A) to (D) are sequentially performed.
(A) A step of producing an organic vehicle by dissolving a binder resin with two or more organic solvents having different boiling points (B) A step of filtering the organic vehicle (C) A step of volatilizing a part of the organic solvent in the organic vehicle (D) Dispersing the inorganic powder in the organic vehicle   The inorganic powder according to claim 1, wherein the difference in boiling point between the organic solvent having the lowest boiling point and the organic solvent having the second lowest boiling point among the two or more organic solvents having different boiling points is 30 ° C or higher. Manufacturing method of containing paste.   The method for producing an inorganic powder-containing paste according to claim 1 or 2, wherein a boiling point of an organic solvent having the lowest boiling point is in a range of 100 to 180 ° C among two or more organic solvents having different boiling points. .   The method for producing an inorganic powder-containing paste according to any one of claims 1 to 3, wherein the solubility parameter of two or more organic solvents having different boiling points is in the range of 8.5 to 9.5.   The inorganic powder containing paste manufactured by the manufacturing method of the inorganic powder containing paste in any one of Claims 1-4.   The inorganic powder-containing paste according to claim 5, wherein the inorganic powder is at least one powder selected from glass, a refractory filler, a phosphor, a metal, or a metal oxide.   The inorganic powder-containing paste according to claim 5 or 6, comprising a photosensitive organic component.   The inorganic powder-containing paste according to any one of claims 5 to 7, which is used for forming a display electrode, dielectric, barrier rib, phosphor, and black stripe.   It is a manufacturing method of the member for display panels including the process by which an inorganic powder containing paste is apply | coated at least on a board | substrate, Comprising: An inorganic powder containing paste is an inorganic powder containing paste in any one of Claims 5-8. A method for producing a member for a display panel.