WO2009116182A1 - 感光性樹脂組成物、感光性エレメント、レジストパターンの形成方法及びプリント配線板の製造方法 - Google Patents
感光性樹脂組成物、感光性エレメント、レジストパターンの形成方法及びプリント配線板の製造方法 Download PDFInfo
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- WO2009116182A1 WO2009116182A1 PCT/JP2008/060619 JP2008060619W WO2009116182A1 WO 2009116182 A1 WO2009116182 A1 WO 2009116182A1 JP 2008060619 W JP2008060619 W JP 2008060619W WO 2009116182 A1 WO2009116182 A1 WO 2009116182A1
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/032—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders
- G03F7/033—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders the binders being polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1806—C6-(meth)acrylate, e.g. (cyclo)hexyl (meth)acrylate or phenyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1811—C10or C11-(Meth)acrylate, e.g. isodecyl (meth)acrylate, isobornyl (meth)acrylate or 2-naphthyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1812—C12-(meth)acrylate, e.g. lauryl (meth)acrylate
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0045—Photosensitive materials with organic non-macromolecular light-sensitive compounds not otherwise provided for, e.g. dissolution inhibitors
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/028—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with photosensitivity-increasing substances, e.g. photoinitiators
- G03F7/031—Organic compounds not covered by group G03F7/029
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/02—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding
- H05K3/06—Apparatus or processes for manufacturing printed circuits in which the conductive material is applied to the surface of the insulating support and is thereafter removed from such areas of the surface which are not intended for current conducting or shielding the conductive material being removed chemically or electrolytically, e.g. by photo-etch process
- H05K3/061—Etching masks
- H05K3/064—Photoresists
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
Definitions
- the present invention relates to a photosensitive resin composition, a photosensitive element, a resist pattern forming method, and a printed wiring board manufacturing method.
- photosensitive resin composition layer In the field of manufacturing printed wiring boards, as a resist material used for etching or plating, a photosensitive resin composition or a layer containing the photosensitive resin composition (hereinafter referred to as “photosensitive resin composition layer”).
- a photosensitive element (laminate) having a structure in which is formed on a support film and a protective film is disposed on the photosensitive resin composition layer is widely used.
- a printed wiring board is manufactured by using the above photosensitive element, for example, by the following procedure. That is, first, the photosensitive resin composition layer of the photosensitive element is laminated on a circuit forming substrate such as a copper-clad laminate. At this time, the surface opposite to the surface of the photosensitive resin composition layer in contact with the support film (hereinafter referred to as the “lower surface” of the photosensitive resin composition layer) (hereinafter referred to as “the upper surface of the photosensitive resin composition layer”). ”) Is in close contact with the surface of the circuit forming substrate on which the circuit is formed. Therefore, when the protective film is arrange
- the photosensitive resin composition layer is pattern-exposed through a mask film or the like.
- the support film is peeled off at any timing before or after exposure.
- the unexposed part of the photosensitive resin composition layer is dissolved or dispersed and removed with a developer.
- an etching process or a plating process is performed to form a pattern, and finally the cured portion is peeled and removed.
- the etching process is a method in which the cured resist is peeled off after the metal surface of the circuit forming substrate not covered with the cured resist formed after development is removed by etching.
- the plating process is a metal that has been coated with copper and solder after the plating process such as copper and solder is performed on the metal surface of the circuit forming substrate that is not covered with the cured resist formed after development. This is a method of etching a surface.
- DLP Digital Light Processing
- the photosensitive resin composition is excellent in resolution, resist stripping property and adhesion. If the photosensitive resin composition can provide a resist pattern with excellent resolution and adhesion, it is possible to sufficiently reduce short circuits and disconnections between circuits. In addition, if the photosensitive resin composition can form a resist with excellent peeling characteristics, the resist patterning efficiency is improved by shortening the resist peeling time, and the size of the resist peeling pieces By reducing, the resist peeling residue is reduced and the yield of circuit formation is improved.
- the present invention has been made in view of the above circumstances, and a photosensitive resin composition and a photosensitive element that form a resist pattern that sufficiently satisfies all of sensitivity, resolution, and adhesiveness as compared with the prior art, and those It is an object of the present invention to provide a method for forming a used resist pattern and a method for producing a printed wiring board.
- the present invention that achieves the above object comprises (A) 10 to 65 parts by mass of a divalent group represented by the following general formula (I) and 5 to 55 divalent groups represented by the following general formula (II). 100 parts by weight of a binder polymer having 15 parts by weight and 15 to 50 parts by weight of a divalent group represented by the following general formula (III), (B) a photopolymerizable compound, and (C) a photopolymerization initiator.
- a photosensitive resin composition is provided.
- R 1 , R 3 and R 5 each independently represent a hydrogen atom or a methyl group
- R 2 represents an alkyl group having 1 to 3 carbon atoms, carbon
- An alkoxy group, a hydroxyl group, an amino group or a halogen atom represented by formulas 1 to 3 is shown.
- R 4 represents an alicyclic hydrocarbon group which may have a substituent, an aromatic hydrocarbon group which may have a substituent, or a heterocyclic group which may have a substituent.
- m represents an integer of 0 to 5. When m is 2 to 5, a plurality of R 2 may be the same as or different from each other.
- the photosensitive resin composition of the present invention is configured by combining the above-mentioned specific components, so that it has sufficient sensitivity in comparison with conventional methods even in the formation of a resist pattern by a direct drawing exposure method.
- a resist pattern can be formed with sufficient resolution and adhesion.
- the present inventors consider that by using a binder polymer having a specific group such as the component (A), the above-described sensitivity, resolution, and adhesiveness are more effective than those in the past. ing.
- the above-mentioned photosensitive resin composition of the present invention has sufficient peeling characteristics of a resist pattern formed therefrom. Therefore, when the photosensitive resin composition of the present invention is used in forming a resist pattern or a printed wiring board, the process can be shortened and the product yield can be improved.
- R 4 is preferably a monovalent group represented by the following general formula (IV), and further improves the sensitivity, resolution, and adhesion of the photosensitive resin composition. can do.
- R 6 represents a hydroxyl group, an alkyl group having 1 to 12 carbon atoms, or a hydroxyalkyl group having 1 to 12 carbon atoms.
- n represents an integer of 0 to 5, and when n is 2 to 5, a plurality of R 6 may be the same as or different from each other.
- R 4 is a monovalent compound represented by the following general formulas (V), (VI), (VII) and (VIII) (hereinafter referred to as “(V) to (VIII)”). It is preferably at least one group selected from the group consisting of groups. Thereby, the sensitivity of the photosensitive resin composition, the resolution, and adhesiveness can be improved further.
- R 7 , R 8 and R 9 each independently represent a hydroxyl group, an alkyl group having 1 to 12 carbon atoms or a hydroxyalkyl group having 1 to 12 carbon atoms.
- j represents an integer of 0 to 4
- k and p represent integers of 0 to 9, and when j, k or p is 2 or more, a plurality of R 7 , R 8 or R 9 may be the same or different from each other. Also good.
- the photopolymerization initiator preferably contains a hexaarylbiimidazole derivative.
- the photosensitive resin composition according to the present invention preferably further contains (D) a sensitizing dye.
- the photosensitive resin composition according to the present invention preferably further contains (E) an amine compound. Thereby, the sensitivity of the photosensitive resin composition can be further increased.
- the present invention provides a photosensitive element comprising a support film and a photosensitive resin composition layer containing the above-described photosensitive resin composition formed on the support film. According to this photosensitive element, since the photosensitive resin composition layer containing the photosensitive resin composition is provided, sufficient sensitivity, resolution and adhesion can be obtained even when a resist pattern is formed by a direct drawing exposure method. Can be done.
- the present invention provides a laminating step of laminating a photosensitive resin composition layer containing the photosensitive resin composition on a circuit-forming substrate, and exposing a predetermined portion of the photosensitive resin composition layer with actinic rays.
- a resist pattern forming method comprising: an exposure step of photocuring the substrate; and a developing step of removing a portion other than the exposed portion of the photosensitive resin composition layer from the circuit forming substrate on which the photosensitive resin composition layer is laminated. .
- the direct drawing exposure method having a short exposure time is sufficient.
- a resist pattern can be formed with resolution and adhesion.
- the present invention provides a method for manufacturing a printed wiring board including a step of forming a conductor pattern by etching or plating a circuit forming substrate on which a resist pattern is formed by the above-described resist pattern forming method. According to this method for forming a printed wiring board, since a circuit forming substrate on which a resist pattern is formed by the above resist pattern forming method is used, high-density wiring can be formed, and disconnection and short circuit are sufficiently suppressed. Printed wiring boards can be manufactured.
- the present invention it is possible to provide a photosensitive resin composition that forms a resist pattern that sufficiently satisfies all of sensitivity, resolution, and adhesiveness as compared with the prior art.
- the photosensitive resin composition of the present invention comprises (A) a divalent group represented by the above general formula (I) (hereinafter also referred to as “structural unit”) and a structure represented by the above general formula (II). It is the photosensitive resin composition containing the binder polymer which has a unit and the structural unit represented by the said general formula (III), (B) photopolymerizable compound, and (C) photoinitiator.
- the binder polymer as component (A) is a structural unit based on styrene or a derivative thereof represented by the above general formula (I), a structural unit based on a (meth) acrylic acid ester represented by the above general formula (II), And a structural unit based on (meth) acrylic acid represented by the general formula (III).
- the sensitivity of the photosensitive resin composition is improved, and the resolution of the photosensitive resin composition layer using the photosensitive resin composition as a constituent material, as well as the adhesion to the circuit-forming substrate and the release characteristics are improved. be able to.
- R ⁇ 1 > shows a hydrogen atom or a methyl group.
- R 2 represents an alkyl group having 1 to 3 carbon atoms, an alkoxy group having 1 to 3 carbon atoms, a hydroxyl group, an amino group, or a halogen atom.
- m represents an integer of 0 to 5.
- the structural unit represented by the general formula (I) is obtained from styrene which is a polymerizable monomer or a derivative thereof.
- styrene derivative include methylstyrene, ethylstyrene, hydroxystyrene, butoxystyrene, chlorostyrene, bromostyrene, and aminostyrene.
- R 3 represents a hydrogen atom or a methyl group.
- R 4 represents an alicyclic hydrocarbon group which may have a substituent, an aromatic hydrocarbon group which may have a substituent, or a heterocyclic group which may have a substituent. Indicates.
- Examples of the alicyclic hydrocarbon group include a group having one cyclic hydrocarbon group such as a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, and a cycloheptyl group, or a derivative thereof, a dicyclopentanyl group, and a dicyclopentenyl group. , Groups having two or more cyclic hydrocarbons such as an adamantyl group and isobornyl group or derivatives thereof.
- aromatic hydrocarbon group examples include a group having an aromatic ring such as a phenyl group, a biphenyl group, a triphenylmethyl group, a naphthyl group, an anthracenyl group, a tetracenyl group, a phenanthrenyl group, and a pyrenyl group, or derivatives thereof. It is done.
- heterocyclic group examples include a group having an aliphatic heterocyclic ring such as tetrahydropyranyl group, piperidinyl group, piperazinyl group, morpholinyl group or derivatives thereof, pyranyl group, pyridinyl group, pyrimidinyl group, furanyl group, thienyl.
- a group having an aromatic heterocycle such as a group, a pyrazole group, a pyrrole group, an imidazole group, an oxazole group or a thiazole group, or a derivative thereof.
- R 4 may have an alicyclic hydrocarbon group which may have a substituent or an aliphatic which may have a substituent. It is preferably a heterocyclic group.
- R 4 is more preferably a group represented by the above general formula (IV).
- R 6 represents a hydroxyl group, an alkyl group having 1 to 12 carbon atoms, or a hydroxyalkyl group having 1 to 12 carbon atoms.
- n represents an integer of 0 to 5, and when n is 2 to 5, a plurality of R 6 may be the same as or different from each other.
- R 6 is preferably a hydroxyl group, an alkyl group having 1 to 5 carbon atoms, or a hydroxyalkyl group having 1 to 5 carbon atoms, and having 1 to 3 carbon atoms.
- An alkyl group or a hydroxyalkyl group having 1 to 3 carbon atoms is more preferable, and a hydroxyl group, a methyl group or a hydroxymethyl group is further preferable.
- N is preferably 0 to 3, more preferably 0 to 2.
- R 4 when R 4 is a group represented by the general formula (IV), the structural unit is obtained from cyclohexyl (meth) acrylate which is a polymerizable monomer or a derivative thereof.
- (meth) acrylic acid cyclohexyl derivatives include (meth) acrylic acid methyl cyclohexyl, (meth) acrylic acid dimethyl cyclohexyl, (meth) acrylic acid trimethyl cyclohexyl, (meth) acrylic acid hydroxycyclohexyl, (meth) acrylic acid. Mention may be made of methylhydroxycyclohexyl.
- R 4 is selected from the group consisting of monovalent groups represented by the above general formulas (V) to (VIII), respectively. It is preferable that it is at least one kind of group.
- R 7 , R 8 or R 9 each independently represents a hydroxyl group, an alkyl group having 1 to 12 carbon atoms or a hydroxyalkyl group having 1 to 12 carbon atoms.
- Show. j represents an integer of 0 to 4
- k and p represent integers of 0 to 9.
- a plurality of R 7 , R 8, or R 9 may be the same as or different from each other.
- R 7 , R 8 or R 9 is preferably a hydroxyl group, an alkyl group having 1 to 5 carbon atoms or a hydroxyalkyl group having 1 to 5 carbon atoms.
- the alkyl group having 1 to 3 carbon atoms or the hydroxyalkyl group having 1 to 3 carbon atoms is more preferable, and a hydroxyl group, a methyl group, or a hydroxymethyl group is further preferable.
- J is preferably 0-2.
- k and p are preferably from 0 to 5, and more preferably from 0 to 2.
- R 4 when R 4 is a group represented by the general formula (V), the structural unit is obtained from tetrahydropyranyl (meth) acrylate or a derivative thereof which is a polymerizable monomer. It is done.
- R 4 is a group represented by the general formula (VI)
- the structural unit is obtained from adamantyl (meth) acrylate or a derivative thereof which is a polymerizable monomer.
- R 4 when R 4 is a group represented by the above general formula (VII), the structural unit is obtained from dicyclopentanyl (meth) acrylate or a derivative thereof which is a polymerizable monomer.
- R 4 is a group represented by the above general formula (VIII), the structural unit is obtained from isobornyl (meth) acrylate which is a polymerizable monomer.
- R 4 is particularly preferably a monovalent group represented by the general formula (IV).
- R 5 represents a hydrogen atom or a methyl group, and specifically a structural unit based on acrylic acid or methacrylic acid.
- the content ratio of the structural unit represented by the general formula (I) in the component (A) is 10 to 65 parts by mass and 15 to 55 parts by mass with respect to 100 parts by mass of the total amount of the component (A). It is preferably 20 to 50 parts by mass, and more preferably 25 to 45 parts by mass. Thereby, the adhesiveness and peeling characteristics of the resist pattern become more excellent. If the content is less than 10 parts by mass, the adhesion tends to be insufficient, and if it exceeds 65 parts by mass, the peeling characteristics tend to be lowered.
- the content ratio of the structural unit represented by the general formula (II) in the component (A) is 5 to 55 parts by mass and 10 to 50 parts by mass with respect to 100 parts by mass of the total amount of the component (A). It is preferably 15 to 45 parts by mass, more preferably 20 to 40 parts by mass. Thereby, the adhesiveness and peeling characteristics of the resist pattern become more excellent. If the content is less than 5 parts by mass, the adhesion tends to be insufficient, and if it exceeds 55 parts by mass, the peeling properties tend to be lowered.
- the content ratio of the structural unit represented by the general formula (III) in the component (A) is 15 to 50 parts by mass and 20 to 45 parts by mass with respect to 100 parts by mass of the total amount of the component (A). It is preferably 25 to 40 parts by mass, more preferably 27 to 35 parts by mass. Thereby, the peeling characteristics and developability of the resist pattern are further improved.
- the content ratio is less than 15 parts by mass, the peeling piece tends to be large or the peeling time tends to be long as the alkali solubility of the resist pattern is lowered.
- this content rate exceeds 50 mass parts, it exists in the tendency for the resolution to become inadequate.
- the structural unit represented by the general formula (III) is obtained from (meth) acrylic acid which is a polymerizable monomer.
- the “styrene derivative” refers to a compound in which a hydrogen atom in a phenyl group of styrene is substituted with a substituent (an organic group such as an alkyl group, a hydroxyl group, or a halogen atom).
- a substituent an organic group such as an alkyl group, a hydroxyl group, or a halogen atom.
- (meth) acrylic acid cyclohexyl derivative” means that a hydrogen atom in a cyclohexyl group of cyclohexyl (meth) acrylate is a substituent (an alkyl group having 1 to 12 carbon atoms and a hydroxyalkyl group having 1 to 12 carbon atoms). Refers to the substituted one.
- one type of binder polymer may be used alone, or two or more types of binder polymers may be used in any combination.
- a binder polymer in the case of using two or more types in combination, for example, two or more types of binder polymers comprising different copolymerization components (including different repeating units as constituent components), two or more types of binders having different weight average molecular weights Examples thereof include polymers and two or more types of binder polymers having different degrees of dispersion.
- a polymer having a multimode molecular weight distribution described in JP-A No. 11-327137 can also be used.
- the weight average molecular weight (Mw) and number average molecular weight (Mn) of the binder polymer can be measured by gel permeation chromatography (GPC) (converted by a calibration curve using standard polystyrene).
- the Mw of the binder polymer is preferably 5000 to 300,000, more preferably 10,000 to 150,000, and particularly preferably 20,000 to 80,000.
- Mw is less than 5000, the developer resistance tends to decrease, and when it exceeds 300,000, the development time tends to be long.
- the dispersion degree (Mw / Mn) of (A) the binder polymer is preferably 1.0 to 3.0, and more preferably 1.0 to 2.0. When the degree of dispersion exceeds 3.0, the adhesion and resolution tend to decrease.
- the binder polymer according to the present invention can be produced, for example, by radical polymerization of the above polymerizable monomer.
- the (A) binder polymer may contain structural units other than the structural units represented by the general formulas (I) to (III).
- examples of the polymerizable monomer that gives structural units other than the structural units represented by the general formulas (I) to (III) include acrylamide such as diacetone acrylamide, acrylonitrile, vinyl n-butyl ether, and the like.
- Examples of the (meth) acrylic acid alkyl ester include compounds represented by the following general formula (IX), and compounds in which the alkyl group of these compounds is substituted with a hydroxyl group, an epoxy group, a halogen atom, or the like.
- CH 2 C (R 10 ) -COOR 11 (IX)
- R 10 represents a hydrogen atom or a methyl group
- R 11 represents an alkyl group having 1 to 12 carbon atoms.
- the alkyl group having 1 to 12 carbon atoms represented by R 11 include, for example, methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, An undecyl group, a dodecyl group, and these structural isomers are mentioned.
- Examples of the polymerizable monomer represented by the general formula (IX) include (meth) acrylic acid methyl ester, (meth) acrylic acid ethyl ester, (meth) acrylic acid propyl ester, and (meth) acrylic acid butyl.
- Ester (meth) acrylic acid pentyl ester, (meth) acrylic acid hexyl ester, (meth) acrylic acid heptyl ester, (meth) acrylic acid octyl ester, (meth) acrylic acid 2-ethylhexyl ester, (meth) acrylic acid nonyl
- esters (meth) acrylic acid decyl esters, (meth) acrylic acid undecyl esters, and (meth) acrylic acid dodecyl esters. These polymerizable monomers can be used alone or in combination of two or more.
- the content ratio of the structural unit other than the structural units represented by the general formulas (I) to (III) in the component (A) is not particularly limited as long as the object of the present invention can be achieved.
- the content is preferably 0 to 40 parts by mass, more preferably 0 to 20 parts by mass, and 0 to 10 parts by mass with respect to 100 parts by mass of the total amount of component (A). Is particularly preferred.
- the binder polymer in the present invention is preferably composed of one or more kinds of polymers having a carboxyl group from the viewpoint of developability when alkali development is performed using an alkaline solution.
- Such a (A) binder polymer can be produced, for example, by radical polymerization of a polymerizable monomer having a carboxyl group and another polymerizable monomer.
- the acid value of the binder polymer is preferably 30 to 220 mgKOH / g, more preferably 50 to 200 mgKOH / g, and still more preferably 80 to 180 mgKOH / g.
- the acid value is less than 30 mgKOH / g, the development time tends to be long, and when it exceeds 220 mgKOH / g, the developer resistance of the photocured resist tends to be lowered.
- the binder polymer may have a photosensitive characteristic group in its molecule, if necessary.
- the blending amount of component (A) in the photosensitive resin composition of the present invention is preferably 30 to 70 parts by weight, and 35 to 65 parts per 100 parts by weight of the total amount of component (A) and component (B). More preferably, it is 40 parts by mass, and still more preferably 40-60 parts by mass. If this amount is less than 30 parts by mass, it tends to be difficult to obtain a good shape of the resist pattern, and if it exceeds 70 parts by mass, it tends to be difficult to obtain good sensitivity and resolution.
- a component can be used individually by 1 type or in combination of 2 or more types.
- the photosensitive resin composition of the present invention may be used in combination with a resin other than the component (A) as long as the object of the present invention can be achieved.
- resins include acrylic resins, styrene resins, epoxy resins, amide resins, amide epoxy resins, alkyd resins, and phenol resins. Of these, acrylic resins are preferred from the standpoint of alkali developability. Moreover, these resin can be used individually by 1 type or in combination of 2 or more types.
- the photopolymerizable compound as the component (B) includes, for example, a compound obtained by reacting a polyhydric alcohol with an ⁇ , ⁇ -unsaturated carboxylic acid, a bisphenol A (meth) acrylate compound, a glycidyl group-containing compound with ⁇ , Compounds obtained by reacting ⁇ -unsaturated carboxylic acids, urethane monomers such as (meth) acrylate compounds having a urethane bond in the molecule, nonylphenoxypolyethyleneoxyacrylate, phthalic acid compounds, (meth) acrylic acid alkyl esters Can be mentioned. These compounds can be used individually by 1 type or in combination of 2 or more types.
- Examples of the compound obtained by reacting the polyhydric alcohol with an ⁇ , ⁇ -unsaturated carboxylic acid include, for example, polyethylene glycol di (meth) acrylate having 2 to 14 ethylene groups, and 2 to 2 propylene groups. 14, polypropylene glycol di (meth) acrylate, polyethylene / polypropylene glycol di (meth) acrylate having 2 to 14 ethylene groups and 2 to 14 propylene groups, trimethylolpropane di (meth) acrylate, Trimethylolpropane tri (meth) acrylate, EO-modified trimethylolpropane tri (meth) acrylate, PO-modified trimethylolpropane tri (meth) acrylate, EO, PO-modified trimethylolpropane tri (meth) acrylate, tetramethylolmethanetri (me ) Acrylate, tetramethylolmethane tetra (meth) acrylate, dipentaery
- EO indicates ethylene oxide
- PO represents propylene oxide
- the PO-modified compound has a propylene oxide group block structure.
- Examples of the bisphenol A (meth) acrylate compound include 2,2-bis (4-((meth) acryloxypolyethoxy) phenyl) propane, 2,2-bis (4-((meth) acryloxypoly). Propoxy) phenyl) propane, 2,2-bis (4-((meth) acryloxypolybutoxy) phenyl) propane, 2,2-bis (4-((meth) acryloxypolyethoxypolypropoxy) phenyl) propane, etc. Is mentioned.
- Examples of the 2,2-bis (4-((meth) acryloxypolyethoxy) phenyl) propane include 2,2-bis (4-((meth) acryloxydiethoxy) phenyl) propane, 2,2 -Bis (4-((meth) acryloxytriethoxy) phenyl) propane, 2,2-bis (4-((meth) acryloxytetraethoxy) phenyl) propane, 2,2-bis (4-((meta ) Acryloxypentaethoxy) phenyl) propane, 2,2-bis (4-((meth) acryloxyhexaethoxy) phenyl) propane, 2,2-bis (4-((meth) acryloxyheptaethoxy) phenyl) Propane, 2,2-bis (4-((meth) acryloxyoctaethoxy) phenyl) propane, 2,2-bis (4-((meth) acryloxy nanoe) Xyl) phenyl) propane, 2,2-bis (4-(
- 2,2-bis (4- (methacryloxypentaethoxy) phenyl) propane is commercially available as BPE-500 (trade name, manufactured by Shin-Nakamura Chemical Co., Ltd.) or FA-321M (trade name, manufactured by Hitachi Chemical Co., Ltd.).
- the 2,2-bis (4- (methacryloxypentadecaethoxy) phenyl) propane is commercially available as BPE-1300 (trade name, manufactured by Shin-Nakamura Chemical Co., Ltd.).
- the number of ethylene oxide groups in one molecule of the 2,2-bis (4-((meth) acryloxypolyethoxy) phenyl) propane is preferably 4 to 20, and more preferably 8 to 15. preferable. These compounds can be used individually by 1 type or in combination of 2 or more types.
- Examples of the (meth) acrylate compound having a urethane bond in the molecule include, for example, a (meth) acryl monomer having a hydroxyl group at the ⁇ -position and a diisocyanate compound (isophorone diisocyanate, 2,6-toluene diisocyanate, 2,4-toluene diisocyanate). , 1,6-hexamethylene diisocyanate, etc.), tris ((meth) acryloxytetraethylene glycol isocyanate) hexamethylene isocyanurate, EO-modified urethane di (meth) acrylate, EO, PO-modified urethane di (meth) acrylate Is mentioned.
- Examples of the EO-modified urethane di (meth) acrylate include UA-11 (trade name, manufactured by Shin-Nakamura Chemical Co., Ltd.).
- Examples of the EO, PO-modified urethane di (meth) acrylate include UA-13 (trade name, manufactured by Shin-Nakamura Chemical Co., Ltd.). These compounds can be used individually by 1 type or in combination of 2 or more types.
- nonylphenoxypolyethyleneoxyacrylate examples include nonylphenoxytetraethyleneoxyacrylate, nonylphenoxypentaethyleneoxyacrylate, nonylphenoxyhexaethyleneoxyacrylate, nonylphenoxyheptaethyleneoxyacrylate, nonylphenoxyoctaethyleneoxyacrylate, nonylphenoxynonaethylene Examples include oxyacrylate, nonylphenoxydecaethyleneoxyacrylate, and nonylphenoxyundecaethyleneoxyacrylate. These compounds can be used individually by 1 type or in combination of 2 or more types.
- phthalic acid compounds examples include ⁇ -chloro- ⁇ -hydroxypropyl- ⁇ ′-(meth) acryloyloxyethyl-o-phthalate, ⁇ -hydroxyalkyl- ⁇ ′-(meth) acryloloxyalkyl-o. -Phthalates.
- phthalic acid compounds are commercially available, for example, FA-MECH (manufactured by Hitachi Chemical Co., Ltd., trade name). These compounds can be used individually by 1 type or in combination of 2 or more types.
- the component (B) of the present invention preferably contains a bisphenol A (meth) acrylate compound or a (meth) acrylate compound having a urethane bond in the molecule from the viewpoint of plating resistance and adhesion. Moreover, it is preferable that a bisphenol A type (meth) acrylate compound is included from a viewpoint which can improve a sensitivity and a resolution.
- the component (B) of the present invention contains polyalkylene glycol di (meth) acrylate having both an ethylene glycol chain and a propylene glycol chain in the molecule from the viewpoint of improving the flexibility of the cured film.
- This (meth) acrylate is not particularly limited as long as it has both an ethylene glycol chain and a propylene glycol chain (n-propylene glycol chain or isopropylene glycol chain) as alkylene glycol chains in the molecule.
- the (meth) acrylate further comprises an n-butylene glycol chain, an isobutylene glycol chain, an n-pentylene glycol chain, a hexylene glycol chain, and an alkylene glycol chain having about 4 to 6 carbon atoms which is a structural isomer thereof. You may have.
- the plurality of ethylene glycol chains and propylene glycol chains do not need to be continuously present in blocks, but may be present randomly.
- the secondary carbon of the propylene group may be bonded to an oxygen atom, or the primary carbon may be bonded to an oxygen atom.
- polyalkylene glycol di (meth) acrylates having both an ethylene glycol chain and a propylene glycol chain in the molecule are represented by, for example, the following general formulas (X), (XI) and (XII). The compound which is made is mentioned.
- R 12 , R 13 , R 14 , R 15 , R 16 and R 17 are each independently a hydrogen atom or an alkyl having 1 to 3 carbon atoms. Indicates a group.
- EO represents an ethylene glycol chain
- PO represents a propylene glycol chain.
- m1 to m4 and n1 to n4 each independently represent an integer of 1 to 30. These compounds can be used individually by 1 type or in combination of 2 or more types.
- Examples of the alkyl group having 1 to 3 carbon atoms in the general formulas (X), (XI), and (XII) include a methyl group, an ethyl group, an n-propyl group, and an i-propyl group.
- the total number (m1 + m2, m3, and m4) of ethylene glycol chain repeats in the general formulas (X), (XI), and (XII) is an integer of 1 to 30 and an integer of 1 to 10, respectively. It is preferably an integer of 4 to 9, more preferably an integer of 5 to 8. If the number of repetitions exceeds 30, the tent reliability and the resist shape tend to deteriorate.
- the total number of repeating propylene glycol chains (n1, n2 + n3, and n4) in the general formulas (X), (XI), and (XII) is an integer of 1 to 30 and an integer of 5 to 20, respectively. It is preferably an integer of 8 to 16, more preferably an integer of 10 to 14. If the number of repetitions exceeds 30, the resolution tends to deteriorate and sludge tends to occur.
- the component (B) is composed of two kinds of compounds having two photopolymerizable bonds in one molecule and one kind having one photopolymerizable bond in one molecule among the above-mentioned photopolymerizable compounds. It is particularly preferred to use in combination with a compound.
- the component (B) is a (meth) acrylate compound
- the blending amount of the photopolymerizable compound as the component (B) is preferably 30 to 70 parts by mass, and 35 to 65 parts by mass with respect to 100 parts by mass as the total of the components (A) and (B). More preferred is 40 to 60 parts by mass. If the amount is less than 30 parts by mass, good sensitivity and resolution tend not to be obtained, and if it exceeds 70 parts by mass, a good shape tends not to be obtained.
- a component can be used individually by 1 type or in combination of 2 or more types.
- Examples of the photopolymerization initiator (C) include 4,4′-bis (diethylamino) benzophenone, benzophenone, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl) -butanone-1,2 -Aromatic ketones such as methyl-1- [4- (methylthio) phenyl] -2-morpholino-propanone-1, quinones such as alkylanthraquinones, benzoin ether compounds such as benzoin alkyl ether, benzoins such as benzoin and alkylbenzoin Compounds, benzyl derivatives such as benzyldimethyl ketal, 2- (o-chlorophenyl) -4,5-diphenylimidazole dimer, 2- (o-chlorophenyl) -4,5-di (methoxyphenyl) imidazole dimer, 2- (o-fluorophenyl) -4,5-diphenyl 2,
- the substituents of the aryl groups of the two 2,4,5-triarylimidazoles may be the same and may give the target compound.
- Asymmetric compounds may be provided.
- the photopolymerization initiator is preferably a hexaarylbiimidazole derivative which is a 2,4,5-triarylimidazole dimer from the viewpoint of adhesion and sensitivity. These photopolymerization initiators are used alone or in combination of two or more.
- the blending amount of the photopolymerization initiator as the component (C) is preferably 0.1 to 10 parts by mass with respect to 100 parts by mass of the total amount of the components (A) and (B).
- the amount is more preferably part by mass, and particularly preferably 3.5 to 5 parts by mass. If the amount is less than 0.1 parts by mass, good sensitivity and resolution tend to be difficult to obtain, and if it exceeds 10 parts by mass, there is a tendency that a resist pattern having a desired shape cannot be obtained.
- the photoinitiator which is a component is used individually by 1 type or in combination of 2 or more types.
- the photosensitive resin composition of the present invention preferably contains (D) a sensitizing dye and / or (E) an amine compound in addition to the components (A) to (C) described above.
- the sensitizing dye which is the component (D) in the present invention can effectively use the absorption wavelength of actinic rays used for exposure, and is preferably a compound having a maximum absorption wavelength of 370 to 420 nm.
- a sensitizing dye by using such a sensitizing dye, it becomes possible to have a sufficiently high sensitivity to the exposure light of the direct drawing exposure method.
- the maximum absorption wavelength of the sensitizing dye is less than 370 nm, the sensitivity to direct drawing exposure light tends to decrease, and when it exceeds 420 nm, the stability tends to decrease even in a yellow light environment.
- the sensitizing dye examples include pyrazolines, anthracenes, coumarins, xanthones, oxazoles, benzoxazoles, thiazoles, benzothiazoles, triazoles, stilbenes, triazines, thiophenes, and naphthalimides. Can be mentioned.
- the sensitizing dye preferably contains anthracene from the viewpoint of improving the resolution, adhesion and sensitivity.
- the blending amount of the sensitizing dye is preferably 0.01 to 10 parts by mass and more preferably 0.05 to 5 parts by mass with respect to 100 parts by mass of the total amount of the components (A) and (B).
- the amount is preferably 0.1 to 2 parts by mass. If the blending amount is less than 0.01 parts by mass, good sensitivity and resolution tend not to be obtained, and if it exceeds 10 parts by mass, a resist pattern having a good shape as desired tends not to be obtained.
- the sensitizing dye which is a component is used individually by 1 type or in combination of 2 or more types.
- the amine compound as the component (E) is not particularly limited as long as it has an amino group in the molecule and can increase the sensitivity of the photosensitive resin composition. Specific examples thereof include bis [4- (dimethylamino) phenyl] methane, bis [4- (diethylamino) phenyl] methane, and leucocrystal violet.
- the compounding amount of the amine compound is preferably 0.01 to 10 parts by mass and more preferably 0.05 to 5 parts by mass with respect to 100 parts by mass of the total amount of the components (A) and (B).
- the amount is preferably 0.1 to 2 parts by mass. If the blending amount is less than 0.01 parts by mass, good sensitivity tends not to be obtained, and if it exceeds 10 parts by mass, the component (E) tends to precipitate as foreign matter after film formation.
- the amine compound which is (E) component is used individually by 1 type or in combination of 2 or more types.
- the photosensitive resin composition of the present invention includes a photopolymerizable compound (such as an oxetane compound) having at least one cationically polymerizable cyclic ether group in the molecule, a cationic polymerization initiator, malachite green, and the like.
- Photochromic agents such as dyes, tribromophenyl sulfone and leuco crystal violet, thermochromic inhibitors, plasticizers such as p-toluenesulfonamide, pigments, fillers, antifoaming agents, flame retardants, stabilizers, adhesion promoters , A leveling agent, a peeling accelerator, an antioxidant, a fragrance, an imaging agent, and a thermal crosslinking agent.
- These components can be contained in an amount of about 0.01 to 20 parts by mass per 100 parts by mass of the total amount of the components (A) and (B). These may be used alone or in combination of two or more.
- the photosensitive resin composition of the present invention is dissolved in a solvent such as methanol, ethanol, acetone, methyl ethyl ketone, methyl cellosolve, ethyl cellosolve, toluene, N, N-dimethylformamide, propylene glycol monomethyl ether, or a mixed solvent thereof.
- a solvent such as methanol, ethanol, acetone, methyl ethyl ketone, methyl cellosolve, ethyl cellosolve, toluene, N, N-dimethylformamide, propylene glycol monomethyl ether, or a mixed solvent thereof.
- a solution having a solid content of about 30 to 60% by mass may be used.
- This solution can be used as a coating solution for forming the photosensitive resin composition layer of the photosensitive element.
- the coating solution is applied as a liquid resist on the surface of a metal plate, dried, and then coated with a protective film. It may be used.
- the material of the metal plate include copper, copper-based alloys, iron-based alloys such as nickel, chromium, iron, and stainless steel, preferably copper, copper-based alloys, and iron-based alloys.
- FIG. 1 is a schematic cross-sectional view showing a preferred embodiment of the photosensitive element of the present invention.
- a photosensitive element 1 shown in FIG. 1 includes a support film 2, a photosensitive resin composition layer 3 containing the photosensitive resin composition formed on the support film 2, and a photosensitive resin composition layer 3. It is comprised with the protective film 4 laminated
- a polymer film having heat resistance and solvent resistance such as polyethylene terephthalate, polypropylene, polyethylene, and polyester can be used.
- examples of commercially available products include polypropylene films such as Alphan MA-410, E-200C (above, trade name) manufactured by Oji Paper Co., Ltd., Shin-Etsu Film Co., Ltd., and PS series (eg, trade name: PS-25 manufactured by Teijin Limited).
- Polyethylene terephthalate film such as, but not limited to.
- the support film 2 preferably has a thickness of 1 to 100 ⁇ m, more preferably 5 to 25 ⁇ m. If the thickness is less than 1 ⁇ m, the support film tends to be broken when the support film is peeled off before development, and if it exceeds 100 ⁇ m, the resolution tends to decrease.
- the support film 2 is used by laminating one side as a support for the photosensitive resin composition layer and the other as a protective film for the photosensitive resin composition layer on both sides of the photosensitive resin composition layer. Also good.
- the photosensitive resin composition layer 3 is prepared by dissolving the photosensitive resin composition in a solvent as described above to obtain a solution (coating solution) having a solid content of about 30 to 60% by mass, and then applying this solution onto the support film 2. It is preferable to form it by applying to and drying.
- the coating can be performed by a known method using, for example, a roll coater, comma coater, gravure coater, air knife coater, die coater, bar coater or the like. Drying can be performed at 70 to 150 ° C. for about 5 to 30 minutes.
- the amount of the residual organic solvent in the photosensitive resin composition shall be 2 mass% or less from the point which prevents the spreading
- the thickness of the photosensitive resin composition layer 3 varies depending on the use of the photosensitive element, but is preferably 1 to 100 ⁇ m, more preferably 1 to 50 ⁇ m after drying. If the thickness is less than 1 ⁇ m, it tends to be difficult to apply industrially, and if it exceeds 100 ⁇ m, the effect of the present invention is reduced, and the adhesive force and resolution tend to be reduced.
- the photosensitive resin composition layer 3 preferably has a transmittance of 5 to 75%, more preferably 7 to 60%, and particularly preferably 10 to 40% with respect to light having a wavelength of 365 nm or 405 nm. . If the transmittance is less than 5%, the adhesion tends to be inferior, and if it exceeds 75%, the resolution tends to be inferior.
- the transmittance can be measured with a UV spectrometer, and examples of the UV spectrometer include a 228A type W beam spectrophotometer (trade name) manufactured by Hitachi, Ltd.
- the protective film 4 preferably has a smaller adhesive force between the photosensitive resin composition layer 3 and the protective film 4 than the adhesive force between the photosensitive resin composition layer 3 and the support film 2, and has a low fish. Eye films are preferred. "Fish eye” means that when a material is melted by heat, kneaded, extruded, biaxially stretched, casting method, etc., foreign materials, undissolved materials, oxidized degradation products, etc. It is taken in.
- a polymer film having heat resistance and solvent resistance such as polyethylene terephthalate, polypropylene, polyethylene, and polyester can be used.
- examples of commercially available products include polypropylene films such as Alphan MA-410, E-200C (above, trade name) manufactured by Oji Paper Co., Ltd., Shin-Etsu Film Co., Ltd., and PS series (eg, trade name: PS-25 manufactured by Teijin Limited).
- Polyethylene terephthalate film such as), but is not limited thereto.
- the protective film 4 preferably has a thickness of 1 to 100 ⁇ m, more preferably 5 to 50 ⁇ m, still more preferably 5 to 30 ⁇ m, and particularly preferably 15 to 30 ⁇ m. If the thickness is less than 1 ⁇ m, the protective film tends to be broken during lamination, and if it exceeds 100 ⁇ m, the cost tends to be inferior.
- the photosensitive element 1 of the present invention may further have an intermediate layer such as a cushion layer, an adhesive layer, a light absorption layer, or a gas barrier layer.
- the obtained photosensitive element 1 can be wound up and stored in a sheet form or a roll around a core.
- An end face separator is preferably installed on the end face of the roll-shaped photosensitive element roll from the viewpoint of end face protection, and a moisture-proof end face separator is preferably installed from the viewpoint of edge fusion resistance.
- the winding core include plastics such as polyethylene resin, polypropylene resin, polystyrene resin, polyvinyl chloride resin, ABS resin (acrylonitrile-butadiene-styrene copolymer).
- the method for forming a resist pattern according to the present invention comprises a lamination step of laminating the photosensitive resin composition layer containing the photosensitive resin composition on a circuit forming substrate, and an active portion of the photosensitive resin composition layer. It includes at least an exposure step of irradiating light to photocure the exposed portion and a developing step of removing the photosensitive resin composition in a portion other than the exposed portion from the circuit forming substrate.
- the “circuit forming substrate” refers to a substrate including an insulating layer and a conductor layer formed on the insulating layer. Further, the circuit forming substrate may be multilayered and may have wiring formed therein, and may have a small-diameter through hole.
- the following method is mentioned as a lamination
- the protective film is gradually peeled from the photosensitive resin composition layer, and at the same time, the portion of the surface of the photosensitive resin composition layer that is gradually exposed is brought into close contact with the surface of the circuit forming substrate on which the circuit is formed. .
- the photosensitive resin composition layer and / or the circuit forming substrate is preferably heated to 70 to 130 ° C., and the pressure bonding pressure is about 0.1 to 1.0 MPa (1 to 10 kgf / cm 2). it is preferably about 2), but not particularly limited to these conditions. Further, if the photosensitive resin composition layer is heated to 70 to 130 ° C. as described above, it is not necessary to pre-heat the circuit forming substrate in advance, but in order to further improve the laminating property, the circuit forming substrate is not necessary. It is also possible to perform a pre-heat treatment.
- a method for forming an exposed portion in the exposure process there is a method (mask exposure method) in which an active ray is irradiated onto an image through a negative or positive mask pattern called an artwork.
- the support film present on the photosensitive resin composition layer transmits actinic rays
- the support film can be irradiated with actinic rays
- the support film is light-shielding, the support film After removing the light
- the photosensitive resin composition layer is irradiated with actinic rays.
- a method of irradiating actinic rays in an image form by a direct drawing exposure method such as a laser direct drawing exposure method or a DLP (Digital Light Processing) exposure method may be employed.
- the active light source examples include known light sources such as carbon arc lamps, mercury vapor arc lamps, high pressure mercury lamps, xenon lamps, gas lasers such as argon lasers, solid state lasers such as YAG lasers, ultraviolet rays such as semiconductor lasers, and visible light. That effectively radiate are used.
- known light sources such as carbon arc lamps, mercury vapor arc lamps, high pressure mercury lamps, xenon lamps, gas lasers such as argon lasers, solid state lasers such as YAG lasers, ultraviolet rays such as semiconductor lasers, and visible light. That effectively radiate are used.
- a method for removing portions other than the exposed portion in the development process first, when a support film is present on the photosensitive resin composition layer, the support film is removed, and then wet development, dry development, etc. And a method of developing by removing portions other than the exposed portion. Thereby, a resist pattern is formed.
- a developer corresponding to a photosensitive resin composition such as an alkaline aqueous solution, an aqueous developer, an organic solvent developer, or the like is used, for example, a dip method, a battle method, a spray method, or a rocking immersion.
- Development is performed by a known method such as brushing or scraping.
- the phenomenon method the high pressure spray method is most suitable for improving the resolution.
- an alkaline aqueous solution or the like that is safe and stable and has good operability is used.
- the base of the alkaline aqueous solution include alkali hydroxides such as lithium, sodium, or potassium hydroxide, alkali carbonates such as lithium, sodium, potassium, or ammonium carbonate or bicarbonate, potassium phosphate, and phosphoric acid.
- Alkali metal phosphates such as sodium, alkali metal pyrophosphates such as sodium pyrophosphate and potassium pyrophosphate, and borax are used.
- the alkaline aqueous solution used for development includes a dilute solution of 0.1 to 5% by mass of sodium carbonate, a dilute solution of 0.1 to 5% by mass of potassium carbonate, and a dilute solution of 0.1 to 5% by mass of sodium hydroxide.
- a dilute solution of 0.1-5% by weight sodium tetraborate (borax) is preferred.
- the pH of the alkaline aqueous solution is preferably in the range of 9 to 11, and the temperature is adjusted in accordance with the developability of the photosensitive resin composition layer.
- a surfactant, an antifoaming agent, a small amount of an organic solvent for promoting development, and the like may be added.
- aqueous developer examples include a developer composed of water or an alkaline aqueous solution and one or more organic solvents.
- a base of the alkaline aqueous solution in addition to the substances mentioned above, for example, sodium metasilicate, tetramethylammonium hydroxide, ethanolamine, ethylenediamine, diethylenetriamine, 2-amino-2-hydroxymethyl-1, 3-propanediol 1,3-diaminopropanol-2, morpholine.
- the pH of the developer is preferably as low as possible within a range where the resist can be sufficiently developed, preferably pH 8 to 12, more preferably pH 9 to 10.
- organic solvent examples include acetone, ethyl acetate, alkoxyethanol having an alkoxy group having 1 to 4 carbon atoms, ethyl alcohol, isopropyl alcohol, butyl alcohol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, and diethylene glycol monobutyl ether. . These are used singly or in combination of two or more.
- concentration of the organic solvent is usually preferably 2 to 90% by mass, and the temperature can be adjusted according to the developability. Further, a small amount of a surfactant, an antifoaming agent or the like can be added to the aqueous developer.
- organic solvent developer using the organic solvent alone examples include 1,1,1-trichloroethane, N-methylpyrrolidone, N, N-dimethylformamide, cyclohexanone, methyl isobutyl ketone, and ⁇ -butyrolactone. .
- Water is preferably added to these organic solvent developers in the range of 1 to 20% by mass in order to prevent ignition.
- the resist pattern may be further cured by heating at about 60 to 250 ° C. or exposure at about 0.2 to 10 J / cm 2 as necessary.
- the method for producing a printed wiring board of the present invention is a method of forming a conductor pattern by etching or plating a circuit forming substrate on which a resist pattern is formed by the resist pattern forming method of the present invention.
- Etching and plating of the circuit forming substrate are performed on the conductor layer of the circuit forming substrate using the formed resist pattern as a mask.
- the etching solution for performing etching include cupric chloride solution, ferric chloride solution, alkaline etching solution, and hydrogen peroxide etching solution. In these, it is preferable to use a ferric chloride solution from a point with a favorable etch factor.
- the plating method used for plating is, for example, copper plating such as copper sulfate plating or copper pyrophosphate plating, solder plating such as high-throw solder plating, Watt bath (nickel sulfate-nickel chloride) plating, nickel sulfamate, etc.
- Gold plating such as nickel plating, hard gold plating, and soft gold plating can be used.
- the resist pattern can be peeled off with a stronger alkaline aqueous solution than the alkaline aqueous solution used for development, for example.
- a stronger alkaline aqueous solution for example, a 1 to 10% by mass sodium hydroxide aqueous solution and a 1 to 10% by mass potassium hydroxide aqueous solution are used.
- the peeling method include an immersion method and a spray method, and the immersion method and the spray method may be used alone or in combination. Thus, a printed wiring board is obtained.
- the solution a was added dropwise to a prepared mixture of methyl cellosolve and toluene having a mass ratio of 3: 2 in advance over 4 hours, and then kept at 80 ° C. for 2 hours while stirring. Further, a solution in which 1.0 g of azobisisobutyronitrile was dissolved in 250 g of a mixture of methyl cellosolve and toluene having a mass ratio of 3: 2 was dropped over 10 minutes. The solution after dropping was kept at 80 ° C. for 3 hours with stirring, and then heated to 90 ° C. over 30 minutes. The mixture was kept at 90 ° C. for 2 hours and then cooled to obtain a binder polymer (A-1).
- the binder polymer (A-1) had a nonvolatile content (solid content) of 46% by mass and a weight average molecular weight of 40000.
- the weight average molecular weight was measured by a gel permeation chromatography method and was derived by conversion using a standard polystyrene calibration curve. The GPC conditions are shown below.
- Hitachi L-6000 (Hitachi, trade name) Column: Gelpack GL-R420 + Gelpack GL-R430 + Gelpack GL-R440 (3 in total) (above, manufactured by Hitachi Chemical Co., Ltd., trade name) Eluent: Tetrahydrofuran Measurement temperature: 40 ° C Flow rate: 2.05 mL / min Detector: Hitachi L-3300 type RI (manufactured by Hitachi, trade name)
- binder polymers (A-2) to (A-6) were synthesized by the same method as the synthesis method of the binder polymer (A-1) described above so as to have the composition shown in Table 1 below.
- solution b a solution prepared by mixing 150 g of methacrylic acid, 175 g of tetrahydropyranyl methacrylate and 175 g of styrene and 9.0 g of azobisisobutyronitrile as a comonomer was prepared. .
- the solution b was added dropwise to a preliminarily prepared blend of propylene glycol monomethyl ether and toluene having a mass ratio of 3: 2 over 4 hours, and then kept at 80 ° C. with stirring for 2 hours.
- the nonvolatile content (solid content) of the binder polymer (A-7) was 47.8% by mass, and the weight average molecular weight was 41,000.
- binder polymers (A-8) to (A-12) were synthesized by the same method as the synthesis method of the binder polymer (A-7) described above so as to have the composition shown in Table 2 below.
- B-1 2,2-bis (4- (methacryloxypentaethoxy) phenyl) propane (manufactured by Hitachi Chemical Co., Ltd., trade name: FA-321M)
- B-3 ⁇ -Chloro- ⁇ -hydroxypropyl- ⁇ -methacryloyloxyethyl-o-phthalate (manufactured by Hitachi Chemical Co., Ltd., trade name “FA-MECH”)
- a brush equivalent to # 600 was applied to the copper surface of a copper-clad laminate (made by Hitachi Chemical Co., Ltd., trade name: MCL-E-67), which is a glass epoxy material in which copper foil (thickness 35 mm) was laminated on both sides. Polishing was performed using a polishing machine (manufactured by Sankeisha), washed with water, and then dried with an air flow to obtain a copper-clad laminate (substrate). Then, after heating the copper-clad laminate to 80 ° C., each photosensitive resin composition layer is placed on the surface of the copper-clad laminate while removing the protective film of each photosensitive element on the copper-clad laminate. Lamination was performed at 120 ° C. under a pressure of 4 kgf / cm 2 so as to adhere to each other, and a test piece was produced.
- the support film has a density region of 0.00 to 2.00, a density step of 0.05, and a tablet size of 20 mm ⁇ 187 mm.
- a photo tool having a 41-step tablet having a size of 3 mm ⁇ 12 mm for each step was brought into close contact.
- DE-1AH trade name
- a photosensitive resin composition layer is formed through a phototool and a support film with a predetermined exposure amount. Exposure (drawing). The illuminance was measured using an ultraviolet illuminometer (trade name: UIT-150, manufactured by Ushio Inc.) to which a 405 nm probe was applied.
- the support film was peeled off, and a 1% by mass aqueous sodium carbonate solution was sprayed at 30 ° C. for 24 seconds to remove the unexposed portion of the photosensitive resin composition layer and develop. Thereafter, the number of steps of the step tablet of the photocured film remaining on the copper clad laminate was measured. The exposure amount at which the number of steps of the step tablet was 11 was evaluated as photosensitivity. It shows that photosensitivity is so high that this exposure amount is small. The results obtained are shown in Tables 5 and 6.
- Adhesion was evaluated by exposing using a photo tool having a wiring pattern of line width / space width of 10/10 to 22/22 (unit: ⁇ m) as a negative for adhesion evaluation.
- the adhesiveness can remove the unexposed portion cleanly by the development processing after exposure, and the line width / space width formed without causing meandering and chipping of the line (unit: ⁇ m) was used as the evaluation index.
- the exposure amount was adjusted so that the number of remaining steps of the step tablet after the development processing was 9, 11, and 13, and the adhesion was evaluated at each exposure amount. The smaller the numerical value, the better the evaluation of adhesion.
- the resolution was evaluated by using a phototool having a wiring pattern with a line width / space width of 400/10 to 400/22 (unit: ⁇ m) as a resolution evaluation negative, and exposing with a predetermined exposure amount.
- the resolution is the smallest value (unit: ⁇ m) of the space width between lines in the portion where the unexposed portion is removed cleanly, as the evaluation index.
- the exposure amount was adjusted so that the number of remaining steps of the step tablet after the development processing was 9, 11, and 13, and the resolution was evaluated with each exposure amount. The smaller the numerical value, the better the resolution evaluation. The results obtained are shown in Tables 6 and 7.
- the present invention it is possible to provide a photosensitive resin composition that forms a resist pattern that sufficiently satisfies all of sensitivity, resolution, and adhesiveness as compared with the prior art.
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Abstract
Description
CH2=C(R10)-COOR11 (IX)
撹拌機、還流冷却器、温度計、滴下ロート及び窒素ガス導入管を備えたフラスコに、質量比3:2のメチルセロソルブ及びトルエンの配合物500gを加え、窒素ガスを吹き込みながら撹拌して、80℃まで加熱した。一方、共重合単量体としてメタクリル酸150g、メタクリル酸シクロヘキシル175g及びスチレン175gと、アゾビスイソブチロニトリル12.5gとを混合した溶液(以下、「溶液a」という)を用意した。予め用意した質量比3:2のメチルセロソルブ及びトルエンの配合物に、上記溶液aを4時間かけて滴下した後、80℃で撹拌しながら2時間保温した。さらに、質量比3:2のメチルセロソルブ及びトルエンの配合物250gに、アゾビスイソブチロニトリル1.0gを溶解した溶液を10分かけて滴下した。滴下後の溶液を撹拌しながら80℃で3時間保温した後、30分間かけて90℃に加温した。90℃で2時間保温した後、冷却してバインダーポリマー(A-1)を得た。
ポンプ:日立L-6000型(日立製作所製、商品名)
カラム:Gelpack GL-R420 + Gelpack GL-R430 + Gelpack GL-R440(計3本)(以上、日立化成工業社製、商品名)
溶離液:テトラヒドロフラン
測定温度:40℃
流量:2.05mL/分
検出器:日立L-3300型RI(日立製作所製、商品名)
撹拌機、還流冷却器、温度計、滴下ロート及び窒素ガス導入管を備えたフラスコに、質量比3:2のメチルセロソルブ及びトルエンの配合物450gを加え、窒素ガスを吹き込みながら撹拌して、80℃まで加熱した。一方、共重合単量体としてメタクリル酸150g、メタクリル酸テトラヒドロピラニル175g、及びスチレン175gと、アゾビスイソブチロニトリル9.0gとを混合した溶液(以下、「溶液b」という)を用意した。予め用意した質量比3:2のプロピレングリコールモノメチルエーテル及びトルエンの配合物に、上記溶液bを4時間かけて滴下した後、80℃で撹拌しながら2時間保温した。さらに、質量比3:2のプロピレングリコールモノメチルエーテル及びトルエンの配合物100gに、アゾビスイソブチロニトリル1.2gを溶解した溶液を10分かけて滴下した。滴下後の溶液を撹拌しながら80℃で3時間保温した後、30分間かけて90℃に加温した。90℃で2時間保温した後、冷却してバインダーポリマー(A-7)を得た。
上記バインダーポリマー(A-1)~(A-6)と、以下の材料とを表3に示される質量比で配合し、実施例1~3及び比較例1~3の感光性樹脂組成物の溶液を調製した。また、上記バインダーポリマー(A-7)~(A-12)と、下記材料とを表4に示される質量比で配合し、実施例4~9の感光性樹脂組成物の溶液を調製した。
B-1:2,2-ビス(4-(メタクリロキシペンタエトキシ)フェニル)プロパン(日立化成工業社製、商品名:FA-321M)
B-2:上記一般式(V)で表される化合物であって、R11=R12=メチル基、m1+m2=4(平均値)、n1=12(平均値)であるビニル化合物(日立化成工業社製、商品名「FA-023M」)
B-3:γ-クロロ-β-ヒドロキシプロピル-β-メタクリロイルオキシエチル-o-フタレート(日立化成工業社製、商品名「FA-MECH」)
B-4:上記一般式(XI)で表される化合物であって、R11=R12=メチル基、n2+n3=12(平均値)、m3=6(平均値)であるビニル化合物(日立化成工業社製、商品名「FA-024M」)
B-5:4-ノルマルノニルフェノキシオクタエチレングリコールアクリレート(東亜合成社性、商品名「M-114」)
<光重合開始剤((C)成分)>
C-1:2,2’-ビス(2-クロロフェニル)-4,4’,5,5’-テトラフェニルビスイミダゾール(Hampford社製、商品名:BCIM)
<増感色素((D)成分)>
D-1:9,10-ジブトキシアントラセン(川崎化成工業社製、商品名:DBA、吸収極大を示す波長[λn]=368nm,388nm,410nm)
<(E)発色剤(アミン化合物)>
E-1:ロイコクリスタルバイオレット(山田化学社製)
<染料>
マラカイトグリーン(大阪有機化学工業(株)製)
<溶剤>
アセトン
トルエン
メタノール
得られた各感光性樹脂組成物の溶液を、支持フィルムとなる16μm厚のポリエチレンテレフタレートフィルム上に均一に塗布した。その後、70℃及び110℃の熱風対流式乾燥機を用いて乾燥して、乾燥後の膜厚が25μmの感光性樹脂組成物層を形成した。続いて、感光性樹脂組成物層上に保護フィルムをロール加圧により積層し、各実施例1~9及び比較例1~3に係る感光性エレメントを得た。
続いて、銅箔(厚さ35mm)を両面に積層したガラスエポキシ材である銅張積層板(日立化成工業社製、商品名:MCL-E-67)の銅表面を#600相当のブラシを持つ研磨機(三啓社製)を用いて研磨し、水洗後、空気流で乾燥させ、銅張積層板(基板)を得た。その後、銅張積層板を80℃に加温した後、銅張積層板上に上記各感光性エレメントの保護フィルムを除去しながら、各感光性樹脂組成物層が銅張積層板の表面上に密着するようにして、120℃で4kgf/cm2の圧力下でラミネート(積層)し、試験片を作製した。
<光感度>
各感光性エレメントが積層された銅張積層板を冷却し23℃になった時点で、支持フィルムに、濃度領域0.00~2.00、濃度ステップ0.05、タブレットの大きさ20mm×187mm、各ステップの大きさが3mm×12mmである41段ステップタブレットを有するフォトツールを密着させた。405nmの青紫色レーザダイオードを光源とする日立ビアメカニクス社製直描機DE-1AH(商品名)を使用して、所定の露光量でフォトツール及び支持フィルムを介して感光性樹脂組成物層に露光(描画)した。なお、照度の測定は405nm対応プローブを適用した紫外線照度計(ウシオ電機(株)製、商品名:UIT-150)を用いて行った。
密着性は、密着性評価用ネガとしてライン幅/スペース幅10/10~22/22(単位:μm)の配線パターンを有するフォトツールを使用し露光することによって評価した。ここで、密着性は、露光後の現像処理によって未露光部をきれいに除去することができ、なおかつラインが蛇行、カケを生じることなく形成されたライン幅/スペース幅のうち最も小さい値(単位:μm)を、その評価指標とした。なお、露光量は、現像処理後のステップタブレットの残存段数が、9段、11段及び13段となるように調整し、それぞれの露光量で密着性を評価した。密着性の評価は数値が小さいほど良好な値である。得られた結果を表6及び7に示す。
解像度は、解像度評価用ネガとしてライン幅/スペース幅400/10~400/22(単位:μm)の配線パターンを有するフォトツールを使用し、所定の露光量で露光することによって評価した。ここで、解像度は、露光後の現像によって形成されたレジストパターンにおいて、未露光部がきれいに除去された部分におけるライン間のスペース幅のうち最も小さい値(単位:μm)を、その評価指標とした。なお、露光量は、現像処理後のステップタブレットの残存段数が、9段、11段及び13段となるように調整し、それぞれの露光量で解像度を評価した。解像度の評価は数値が小さいほど良好な値である。得られた結果を表6及び7に示す。
剥離性は、以下の方法で評価した。まず、各実施例及び比較例に係る感光性樹脂組成物層を銅張積層板上に形成し、各感光性樹脂組成物層を所定の露光量で露光し現像して、40mm×50mmの大きさの光硬化膜を作製した。そして、3%水酸化ナトリウム水溶液を用いて剥離を行った。剥離性は、光硬化膜を銅張積層板上から完全に剥離し除去したときの時間を剥離時間として測定し、それを評価指標とした。なお、露光量は、現像処理後のステップタブレットの残存段数が11段となる露光量とした。表5に剥離プロセスの条件を示す。また、得られた結果を表6及び7に示す。
表4に示されるように、実施例1、2では、光感度、密着性及び解像度に優れ、剥離時間も適度に短くなり、それらのバランスが良好であった。実施例3では、剥離時間が長くなったものの、光感度、密着性及び解像度には優れた結果となった。一方、比較例1では、特に密着性が良好ではなかったため、レジストパターンが形成できなかった。また、比較例2では、解像度及び剥離性が良好であったが、密着性が劣る結果となった。比較例3では、剥離性や解像度は優れていたものの、特に密着性が良好ではなかった。
Claims (9)
- (A)下記一般式(I)で表される2価の基10~65質量部と、下記一般式(II)で表される2価の基5~55質量部と、下記一般式(III)で表される2価の基15~50質量部とを有する100質量部のバインダーポリマー、
(B)光重合性化合物、及び
(C)光重合開始剤、
を含有する感光性樹脂組成物。
- 前記(C)光重合開始剤が、ヘキサアリールビイミダゾール誘導体を含む、請求項1記載の感光性樹脂組成物。
- (D)増感色素を更に含有する、請求項1記載の感光性樹脂組成物。
- (E)アミン系化合物を更に含有する、請求項1記載の感光性樹脂組成物。
- 支持フィルムと、当該支持フィルム上に形成された請求項1~6のいずれか一項に記載の感光性樹脂組成物を含有する感光性樹脂組成物層と、を備える感光性エレメント。
- 回路形成用基板上に、請求項1~6のいずれか一項に記載の感光性樹脂組成物を含有する感光性樹脂組成物層を積層する積層工程、
前記感光性樹脂組成物層の所定部分に活性光線を照射して露光部を光硬化する露光工程、及び
前記感光性樹脂組成物層が積層された前記回路形成用基板から前記感光性樹脂組成物層の前記露光部以外の部分を除去する現像工程
を有するレジストパターンの形成方法。 - 請求項8記載のレジストパターンの形成方法によりレジストパターンが形成された回路形成用基板を、エッチング又はめっきして導体パターンを形成する工程を有するプリント配線板の製造方法。
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US12/933,728 US8586284B2 (en) | 2008-03-21 | 2008-06-10 | Photosensitive resin composition, photosensitive element, method of forming resist pattern, and process for producing printed wiring board |
KR1020127033392A KR20130014615A (ko) | 2008-03-21 | 2008-06-10 | 감광성 수지 조성물, 감광성 엘리먼트, 레지스트 패턴의 형성방법 및 프린트 배선판의 제조방법 |
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- 2008-06-10 WO PCT/JP2008/060619 patent/WO2009116182A1/ja active Application Filing
- 2008-06-10 KR KR1020107017873A patent/KR101320225B1/ko not_active IP Right Cessation
- 2008-06-10 KR KR1020127033392A patent/KR20130014615A/ko not_active Application Discontinuation
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Also Published As
Publication number | Publication date |
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US20110086309A1 (en) | 2011-04-14 |
CN101971097B (zh) | 2013-04-17 |
KR20100115759A (ko) | 2010-10-28 |
US8586284B2 (en) | 2013-11-19 |
KR20130014615A (ko) | 2013-02-07 |
CN101971097A (zh) | 2011-02-09 |
KR101320225B1 (ko) | 2013-10-21 |
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