WO2008075531A1 - 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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- WO2008075531A1 WO2008075531A1 PCT/JP2007/072623 JP2007072623W WO2008075531A1 WO 2008075531 A1 WO2008075531 A1 WO 2008075531A1 JP 2007072623 W JP2007072623 W JP 2007072623W WO 2008075531 A1 WO2008075531 A1 WO 2008075531A1
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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
- G03F7/004—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
- G03F7/0041—Photosensitive materials providing an etching agent upon exposure
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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
- G03F7/0047—Photosensitive materials characterised by additives for obtaining a metallic or ceramic pattern, e.g. by firing
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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
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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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- 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
Definitions
- Photosensitive resin composition photosensitive element, resist pattern forming method, and printed wiring board manufacturing method
- the present invention relates to a photosensitive resin composition, a photosensitive element, a method for forming a resist pattern, and a method for producing a printed wiring board.
- photosensitive resin composition In the field of manufacturing printed wiring boards, as a resist material used for etching or tacking, a photosensitive resin composition or a layer containing this photosensitive resin composition (hereinafter referred to as “photosensitive resin composition”).
- the photosensitive resin composition layer of the photosensitive element is laminated on a circuit forming substrate such as a copper-clad laminate.
- the surface hereinafter referred to as the “lower surface” of the photosensitive resin composition layer
- the photosensitive resin composition the surface that contacts the supporting film of the photosensitive resin composition layer
- the “upper surface” of the composition layer is brought into close contact with the surface of the circuit forming substrate forming the circuit.
- this laminating operation is performed while peeling off the protective film.
- Lamination is performed by thermocompression bonding the photosensitive resin composition layer to the underlying circuit forming substrate (normal pressure laminating method).
- the photosensitive resin composition layer is subjected to pattern exposure through a mask film or the like.
- the support film is peeled off at any timing before or after exposure.
- the unexposed portion of the photosensitive resin composition layer is dissolved or dispersed with a developer.
- an etching process or a mating process is performed to form a pattern, and finally the cured portion is peeled and removed.
- the etching process is not covered with a cured resist formed after development.
- This is a method of removing the cured resist after etching away the metal surface of the circuit forming substrate.
- the plating process is a process in which a metal surface of a circuit-forming substrate that has not been coated with a cured resist formed after development is subjected to a plating process such as copper and solder, and then the cured resist is removed and coated with this resist.
- a method of etching a metal surface is a metal surface of a circuit-forming substrate that has not been coated with a cured resist formed after development.
- Patent Document 1 International Publication No. 06/38279 Pamphlet
- the present invention provides a photosensitive resin composition, a photosensitive element, and a resist pattern that are sufficiently effective in improving resolution, adhesion, removal of sludge generated during the development process, and suppressing development residue. It is an object to provide a forming method and a printed wiring board manufacturing method.
- the present inventors have intensively studied paying attention to the composition of the binder polymer and the photopolymerization initiator.
- the composition of the binder polymer and the photopolymerization initiator As a result, by using a specific binder polymer and combining it with a photopolymerization initiator with a specific structure, it has sufficiently high resolution and adhesion that impairs sufficiently high sensitivity, and sludge generated during development.
- the present inventors have found that a photosensitive resin composition that is sufficiently effective for removal of the toner and suppressing development residue can be obtained, and the present invention has been completed.
- the present invention relates to (A) a divalent group represented by the following general formula (I), a divalent group represented by the following general formula (II), and the following general formula (III):
- R 1 , R 3 , and R 5 each independently represent a hydrogen atom or a methyl group
- R 2 and R 4 each independently represent the number of carbon atoms. 1 to 3 alkyl groups, alkoxy groups, OH groups or halogen atoms
- m or n each independently represents an integer of 0 to 5, and when m or n is 2 to 5, a plurality of R 2 or R 4 Are the same or different from each other!
- the photosensitive resin composition of the present invention is configured by combining the above-mentioned specific components, so that sufficient resolution and adhesion can be obtained even in the formation of a resist pattern by a direct drawing exposure method. It is possible to carry out the process, and it is sufficiently effective in removing sludge generated during the development process.
- a binder polymer having a specific group such as the component (A) and a photopolymerization initiator containing a specific hexaarylbiimidazole compound such as the component (C)
- the present inventors consider that a sufficient effect has been obtained in improving the resolution, adhesion, sludge removal and development residue.
- the photopolymerization initiator preferably contains one or more compounds represented by the following general formula (IV)!
- Z 1 and Z 2 are each independently a monovalent represented by the following general formula (V) or (VI)
- R 6 to R 35 each independently represent a hydrogen atom, a halogen atom or an alkoxy group having 1 to 5 carbon atoms, and there are a plurality of R 6 to R 35 in the same molecule. In some cases, they may be the same or different. At least one of R 6 to R 35 represents an alkoxy group having 1 to 5 carbon atoms.
- the photosensitive resin composition according to the present invention preferably further contains (D) a sensitizing dye. This allows for exposure with light that has a peak within a specific wavelength range.
- the maximum absorption can be provided in the vicinity of the specific wavelength range, and the sensitivity of the photosensitive resin composition is enhanced.
- the photosensitive resin composition according to the present invention preferably further comprises (E) an amine compound. Thereby, the sensitivity of the photosensitive resin composition is further enhanced.
- the present invention is a photosensitive element comprising a support film and a photosensitive resin composition layer containing the photosensitive resin composition formed on the support film. According to this support film, since the photosensitive resin composition layer containing the photosensitive resin composition is provided, even when a resist pattern is formed by a direct drawing exposure method, it should be performed with sufficient resolution and adhesion. It is also possible to improve the removal of sludge generated during the development process and to suppress development residues.
- 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 actinic rays are applied to predetermined portions of the photosensitive resin composition layer.
- the direct drawing exposure method having a short exposure time can be used.
- a resist pattern with sufficient resolution and adhesion can be formed.
- sludge generated during the development process can be reliably removed.
- the present invention is a method for manufacturing a printed wiring board, which includes a step of forming a conductive pattern by etching or sticking a circuit forming substrate on which a resist pattern is formed by the resist pattern forming method. is there.
- a printed wiring board manufacturing method since the circuit forming substrate on which the resist pattern is formed by the resist pattern forming method is used, a high-density wiring can be formed and disconnection and short-circuit are sufficiently suppressed.
- Printed wiring boards can be manufactured.
- a photosensitive resin composition, a photosensitive element, and a resist pattern that are sufficiently effective in improving resolution, adhesion, removal of sludge generated during the development process, and suppressing development residue.
- a forming method and a printed wiring board manufacturing method can be provided.
- FIG. 1 is a schematic cross-sectional view showing a preferred embodiment of the photosensitive element of the present invention.
- (meth) acrylic acid refers to acrylic acid or methacrylic acid
- (meth) acrylate refers to acrylate or a corresponding methacrylate
- (meth) acrylate includes an allyloyl group or Means a metataliloyl group.
- 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 the above general formula ( ⁇ ).
- the binder polymer as the component (A) is a structural unit based on the styrene or styrene derivative represented by the general formula (I), a benzenole (meth) acrylate represented by the general formula (II), or It contains a structural unit based on a (meth) acrylic acid benzyl derivative and a structural unit based on (meth) acrylic acid represented by the above general formula (III).
- a structural unit based on a (meth) acrylic acid benzyl derivative and a structural unit based on (meth) acrylic acid represented by the above general formula (III).
- R 1 represents a hydrogen atom or a methyl group
- R 2 represents an alkynole group having 1 to 3 carbon atoms
- an alkoxy group having 1 to 3 carbon atoms an OH group
- a halogen atom Represents an atom
- m represents an integer of 0 to 5.
- R 3 represents a hydrogen atom or a methyl group
- R 4 represents an alkynole group having 1 to 3 carbon atoms, an alkoxy group having 1 to 3 carbon atoms, an OH group, or a halogen atom
- M represents an integer of 0-5.
- R 5 represents a hydrogen atom or a methyl group, and specifically, is a structural unit based on acrylic acid or methacrylic acid.
- the content of the structural unit represented by the general formula (I) is 10 to 60 in the total amount of the component (A). It is preferable that the amount is% S, more preferably 15 to 50% by mass, and particularly preferably 20 to 50% by mass. Further, the content of the structural unit represented by the general formula (II) is preferably 10 to 60% by mass, more preferably 15 to 50% by mass, based on the total amount of the component (A). It is particularly preferably 20 to 50% by mass. The content of the structural unit represented by the general formula (III) is preferably 20 to 50% by mass, more preferably 23 to 40% by mass, based on the total amount of the component (A). It is particularly preferably 25 to 35% by mass.
- the blending amount of the structural unit based on styrene or a styrene derivative, or the structural unit based on benzyl (meth) acrylate or benzyl (meth) acrylate is less than 10% by mass, the resolution tends to be inferior. If the blending amount exceeds 60% by mass, the peel piece tends to be large and the peel time tends to be long. In addition, when the blending amount of the structural unit based on (meth) acrylic acid is less than 20% by mass, the alkali solubility is inferior, the peeled piece tends to be large, and the peeling time tends to be long. Above this, resolution tends to decrease.
- the photosensitive resin composition using the binder polymer of the present invention has excellent effects on adhesion, resolution, removal of sludge generated during development, and suppression of development residue.
- the “styrene derivative” refers to a styrene derivative in which a hydrogen atom is substituted with a substituent (an organic group such as an alkyl group or a halogen atom).
- binder polymer When the photosensitive resin composition layer is formed using this binder polymer, one kind of binder polymer may be used alone, or two or more kinds of binder polymers may be used in any combination. Good. Binder when two or more types are used in combination As one polymer, for example, two or more types of binder polymers comprising different copolymerization components (including different repeating units as constituent components), two types having different weight average molecular weights Examples include the above binder polymers and two or more types of binder polymers having different dispersities. In addition, a polymer having a multimode molecular weight distribution described in JP-A-11 327137 can also be used.
- the weight average molecular weight (Mw) and the number average molecular weight (Mn) of the binder polymer can be measured by gel permeation chromatography (GPC) (according to a calibration curve using standard polystyrene). Conversion).
- the Mw of the binder polymer Is preferably from 5000 to 150000, more preferably from 10,000 to 100,000, and particularly preferably from 20000 to 50000. If the Mw force is less than 5,000, the development resistance tends to decrease at night, and if it exceeds 150,000, the development time tends to be longer.
- the degree of dispersion (Mw / Mn) of the binder polymer is preferably 1 ⁇ 0 to 3 ⁇ 0, more preferably 1.0 to 2.0. If the degree of dispersion exceeds 3.0, the adhesion and resolution tend to decrease.
- the binder polymer of the present invention can be produced, for example, by radical polymerization of a polymerizable monomer.
- examples of the polymerizable monomer that gives the structural units represented by the general formulas ( ⁇ ) to (III) include styrene and / or styrene derivatives, benzyl (meth) acrylate and / or (meth) acrylic acid. Benzyl derivatives, (meth) acrylic acid
- the (i) binder polymer may contain a structural unit other than the structural units represented by the general formulas (i) to (III).
- examples of polymerizable monomers that give structural units other than the structural units represented by the general formulas ( ⁇ ) to (III) include acrylamides such as diacetone acrylamide, attarilonitrile, bulle ⁇ Esters of butyl alcohol such as butyl ether, (meth) acrylic acid alkyl ester, (meth) acrylic acid tetrahydrofurfuryl ester, (meth) acrylic acid dimethylaminoethyl ester, (meth) acrylic acid jetylaminoethyl ester, (meth ) Glycidyl acrylate, 2, 2, 2—Trifluoroethyl (meth) acrylate, 2, 2, 3, 3 Tetrafluoropropyl (meth) acrylate, (meth) acrylic acid, ⁇ bromo (meth) acrylic Acid, ⁇ -chlor
- R 36 represents a hydrogen atom or a methyl group
- R 37 represents an alkyl group having 1 to 12 carbon atoms.
- the alkyl group having 1 to 12 carbon atoms represented by R 37 include, for example, a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a Noel group, Examples include decyl group, undecyl group, dodecyl group and structural isomers thereof.
- Examples of the monomer represented by the general formula (VII) include (meth) acrylic acid methyl ester, (meth) acrylic acid ethyl ester, (meth) acrylic acid propyl ester, (meth) acrylic acid butyl ester.
- the (A) binder polymer in the present invention is preferably one or more of a polymer having a carboxyl group from the viewpoint of developability when alkali development is performed using an alkaline solution.
- a (A) binder polymer can be produced, for example, by the ability S to be produced by radical polymerization of a polymerizable monomer having a carboxylate group and another polymerizable monomer.
- the acid value of the binder polymer is preferably 80 to 250 mg KOH / g, more preferably 100 to 220 mg KOH / g. preferable. If the acid value is less than 80 mgKOH / g, the development time tends to be longer, and if it exceeds 250 mgKOH / g, the developer resistance of the photocured resist tends to be lowered.
- the binder polymer may have a photosensitivity characteristic group in its molecule, if necessary.
- the blending amount of the binder polymer of component (A) is preferably 30 to 70 parts by weight with respect to 100 parts by weight of the total amount of component (A) and component (B) 35 to 65 parts by weight. To be part More preferred is 40 to 60 parts by mass. If the blending amount is less than 30 parts by mass, a good shape tends not to be obtained, and if it exceeds 70 parts by mass, good sensitivity and resolution tend not to be obtained.
- Component (A) can be used alone or in combination of two or more.
- the photosensitive resin composition of the present invention may be used in combination with a resin other than the component (A).
- a resin other than the component (A) for example, an acrylic resin, a styrene resin, an epoxy resin, an amide resin, an amide resin Epoxy resins, alkyd resins, phenol resins and the like can be used in combination.
- acrylic resins are preferable from the viewpoint of alkali developability. These resins can be used alone or in combination of two or more.
- the photopolymerizable compound as component (B) is, for example, a compound obtained by reacting polyhydric alcohol with ⁇ , ⁇ unsaturated power rubonic acid, bisphenol-based (meth) acrylate compound, glycidyl group Compound obtained by reacting ⁇ -, ⁇ -unsaturated carboxylic acid with contained compound, urethane monomer such as (meth) acrylate compound having urethane bond in molecule, nourphenoxypolyethylene oxy acrylate, phthalic acid compound , (Meth) acrylic acid alkyl ester and the like. These compounds can be used alone or in combination of two or more.
- Examples of the compound obtained by reacting the polyhydric alcohol with an ⁇ , / 3 unsaturated carboxylic acid include, for example, polyethylene glycol di (meth) acrylate having 2 to 14 ethylene groups, Polypropylene glycol di (meth) acrylate with 2 to 14 propylene groups, polyethylene with 2 to 14 ethylene groups and 2 to 14 propylene groups.
- Polypropylene glycol di (meth) acrylate Trimethylol propane di (meth) acrylate, trimethylol propane tri (meth) acrylate, ⁇ modified trimethylol propane tri (meth) acrylate, ⁇ modified trimethylol propane tri (meth) acrylate, ⁇ , ⁇ modified Methylonorev.
- ⁇ Represents ethylene oxide
- an EO-modified compound has a block structure of an ethylene oxide group.
- PO represents propylene oxide
- a PO-modified compound has a propylene oxide group block structure.
- Examples of the bisphenol A-based (meth) acrylate compound include 2, 2 bis (4
- Examples of the 2, 2 bis (4-(((meth) atalyloxypolyethoxy) phenyl) propane) include, for example, 2, 2 bis (4 (((meth) atarioxydiethoxy) phenolino) propane, 2, 2 bis (4 ((Meth) Ataryloxytriethoxy) phenol) propane, 2,2 bis (4 ((Meth) Atarioxytetraethoxy) phenol) propane, 2,2 bis (4 ((Meth) Atari Loxypentaethoxy) phenino) propane, 2, 2 bis (4 — ((meth) ataryloxyhexaethoxy) phenyl) propane, 2, 2 bis (4— (((meth) acryloxyheptaethoxy) phenol)) Propane, 2, 2 bis (4 (((meth)) talyloxy otaethoxy) phenenole) propane, 2, 2 bis (4 (((meth) talyloxynanoethoxy) pheninole
- the above 2, 2 bis (4 (methacryloxypentaethoxy) phenol) propane is either BPE—500 (trade name, manufactured by Shin-Nakamura Chemical Co., Ltd.) or FA—321M (Hitachi Chemical Industries, Ltd.)
- the above 2, 2 bis (4 (methacryloxypentade ethoxy) phenyl) propane is BPE-1300 (made by Shin-Nakamura Chemical Co., Ltd., trade name).
- the number of ethylene oxide groups in one molecule of the above-mentioned 2,2bis (4-((meth) atalyloxypolyethoxy) phenyl) propane is preferably 4-20. More preferably, it is 8 to 15; These compounds can be used alone or in combination of two or more.
- Examples of the (meth) acrylate compound having a urethane bond in the molecule include, for example, a (meth) acryl monomer having an OH group at the 3-position and a diisocyanate compound (isophorone diisocyanate, 2, 6 toluene diisocyanate). , 2, 4-toluene diisocyanate, 1,6-hexamethylene diisocyanate, etc.), tris ((meth) alicyclic oxytetraethylene glycol isocyanate) hexamethylene isocyanate Examples include nurate, EO modified urethane (meth) acrylate, EO, PO modified urethane di (meth) acrylate.
- 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 alone or in combination of two or more.
- nourphenoxypolyethyleneoxytalarate examples include nourphenoxytetraethyleneoxytalylate, nourphenoxypentaethyleneoxytalarate, nourphenoxyhexaethyleneoxytalarate, Yuryphenoxyheptaethylene oxyoxytalylate, Noyulphenoxyoctaethyleneoxytalylate, Noyulphenoxynonaethyleneoxytalitrate, Noyulphenoxydecaethyleneoxytalate, Noyulphenoxydeoxyethylene Oxyatalylate. These compounds can be used alone or in combination of two or more.
- phthalic acid compounds include, for example, ⁇ chloro- ⁇ -hydroxypropyl ⁇ 'one (meth) atallylooxychetyl o phthalate, / 3-hydroxyalkyl / 3'one (meth) atalyloxy Alkyl mono-phthalate. These compounds can be used alone or in combination of two or more.
- a bisphenol-no-red (meth) acrylate compound or a (meth) acrylate compound having a urethane bond in the molecule is used. It is preferable to include. Also, from the viewpoint of improving sensitivity and resolution, it is preferable to include a bisphenol A (meth) acrylate compound.
- the component (B) of the present invention includes an intramolecular component from the viewpoint of improving the flexibility of the cured film. It is preferable to contain polyalkylene glycol di (meth) acrylate having both an ethylene glycol chain and a propylene glycol chain. 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.
- this (meth) atalylate has an n-butylene glycol chain, isobutylene glycol chain, n-pentylene glycol chain, hexylene glycol chain, and structural isomers of about 4 to 6 carbon atoms. It may have an alkylene glycol chain.
- the plurality of ethylene glycol chains and propylene glycol chains may be present randomly without having to be continuously present in blocks.
- the secondary carbon of the propylene group may be bonded to the oxygen atom, or the primary carbon may be bonded to the oxygen atom.
- polyalkylene glycol di (meth) acrylate having both an ethylene glycol chain and a propylene glycol chain in the molecule is, for example, the following general formula (VIII):
- formula (VIII), formula (IX) and formula (X), 6 to R 41 each independently represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms
- EO represents an ethylene glycol chain
- PO indicates a propylene glycol chain! !! 1 ⁇ ! ⁇ And !! 1 ⁇ n 4 each independently represent an integer of 1-30.
- Examples of the alkyl group having 1 to 3 carbon atoms in the general formulas (VIII) to (X) include a methylol group, an ethyl group, an n propyl group, and an i propyl group.
- (m ′ + m 2 , m 3 and m 4 ) is an integer from ! to 30; preferably an integer from! to 10 and more preferably an integer from 4 to 9 5 Particularly preferred is an integer of ⁇ 8. If the number of repetitions exceeds 30, the tent reliability and resist shape tend to deteriorate.
- the total number of propylene glycol chain repeats ( ⁇ ⁇ 2 + ⁇ 3 and ⁇ 4 ) in the general formulas (VIII) to (X) is an integer of !!-30, An integer of 8 to 8 is preferred; an integer of 16 is more preferred 10 to 10; an integer of 14 is particularly preferred. If the number of repetitions exceeds 30, the resolution tends to deteriorate and sludge tends to occur.
- the bur compound manufactured by Shin-Nakamura Chemical Co., Ltd., sample name NK ester HEMA-9P) and the like. These compounds can be used alone or in combination of two or more.
- the blending amount of the photopolymerizable compound of component (B) is preferably 30 to 70 parts by mass with respect to 100 parts by mass of the total amount of component (A) and component (B). More preferably, it is 40-60 parts by mass, more preferably 40 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 is obtained. There is a tendency not to be obtained.
- the component (B) can be used alone or in combination of two or more.
- the photopolymerization initiator as the component (C) includes a hexarylbiimidazole compound having one or more alkoxy groups having 1 to 5 carbon atoms.
- R 6 to R 35 are each independently a hydrogen atom, a halogen atom or a carbon number of 1 to 5 represents an alkoxy group, and at least one of R 6 to R 35 preferably contains an alkoxy group having 1 to 5 carbon atoms.
- the hexarylbiimidazole compound only needs to have one or more alkoxy groups having carbon atoms;! To 5 but preferably has two or more, more preferably has four or more.
- the alkoxy group having this carbon number;! To 5 is not contained, adhesion, resolution, sludge removal, and development residue suppressing effects cannot be obtained.
- the alkoxy group having 1 to 5 carbon atoms include methoxy group, ethoxy group, propoxy group, butoxy group, pentoxy group and structural isomers thereof. Of these, a carbon number of 1, that is, a methoxy group is preferable.
- the hexarylbiimidazole compound preferably contains both an alkoxy group having 1 to 5 carbon atoms and a norogen atom from the viewpoint of further improving adhesion, resolution, sludge removability, and development residue suppressing effect.
- R 6 to R 35 when a plurality of R 6 to R 35 are present in the same molecule, they may be the same or different. In the present specification, a group represented by “ ⁇ R 35 ” is R 6 ,
- Examples of the hexaarylbiimidazole compound having one or more alkoxy groups having 1 to 5 carbon atoms include, for example, 2- (o chlorophenyl) 4,5 bis (m methoxyphenyl) imidazole 2-mer, 2- (o methoxyphenyl) 4,5 diphenylimidazole dimer, 2,4 bis (o-phenylphenol) -5- (3,4 dimethoxyphenyl) imidazole dimer Etc.
- the photosensitive resin composition of the present invention is combined with a photopolymerization initiator other than a hexylbiimidazole compound having one or more alkoxy groups having the above-mentioned carbon number; Can be blended.
- Photopolymerization initiators other than hexarylbiimidazole compounds having one or more alkoxy groups include benzophenone, 2 benzil 2 dimethylamino 1-one (4-mononorepholinophenole) -butanone 1, 2-Methyl-1 [4 (Methylthio) phenyl] 2-Morpholinopropanone Aromatic ketones such as 1, quinones such as alkyl anthraquinones, benzoin ether compounds such as benzoin alkyl ethers, benzoin, anoalkylbenzoin, etc.
- Benzoin compounds such as benzyldimethyl ketal, 2- (o black phenyl) 4,5 diphenylimidazolnimer, 2— (o fluorophenyl) 4,5-diphenylimidazole Reactive 2,4,5 triarinoreimidazo, monore dimer 9 Hue Nino les Atari gin, 1, 7- (9, 9'Atarijiniru) include Atarijin derivatives such as heptane.
- the photopolymerization initiator that is the component (C)
- 10 to 100% by mass is preferable 30 to 100% by mass, and 50 to 100% by mass is particularly preferable. If the compounding power is less than 10% by mass, high sensitivity and high resolution tend not to be obtained.
- the blending amount of the photopolymerization initiator as the component (C) is 0.;! To 10 parts by mass with respect to 100 parts by mass of the total amount of the components (A) and (B). 2-6 parts by mass is more preferable 3.5-5 parts by mass is particularly preferable. If the blending amount is less than 0.1 parts by mass, good sensitivity and resolution tend not to be obtained, and if it exceeds 10 parts by mass, a good shape tends not to be obtained.
- the component (C) one type can be used alone, or two or more types can be used in combination.
- 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! .
- a sensitizing dye for example, dialkylaminobenzophenones, pyrazolines, anthracene, coumarines, xanthones, oxazoles, benzoxazoles, thiazoles, benzothiazoles, triazoles, stilbenes, triazines, Examples include thiophenes and naphthanolimides.
- the sensitizing dye a compound having a maximum absorption wavelength of 370 to 420 nm is preferable.
- the sensitizing dye By using such a sensitizing dye, sufficiently high sensitivity to the exposure light of the direct drawing exposure method is obtained. It is possible to have When 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 having a maximum absorption wavelength of 370 to 420 nm for example, bilarizones, anthracenes, coumarins, xanthones and the like are preferable.
- the compounding amount of the sensitizing dye is 0.01 to 10 parts by mass with respect to 100 parts by mass of the total amount of the components (A) and (B).
- S is preferably 0.05 to 5 parts by mass It is particularly preferable that the amount is 0.;! ⁇ 2 parts by mass. If the 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 good shape tends not to be obtained.
- the component (D) one type can be used alone, or two or more types can be used in combination.
- Examples of the amine compound as the component (E) include bis [4 (dimethylamino) phenol] methane, bis [4 (jetylamino) phenol] methane, and leucocrystal violet.
- the blending amount is preferably 0.0;! To 10 parts by mass with respect to 100 parts by mass of the total amount of component (A) and component (B), more preferably 0.05 to 5 parts by mass. It is particularly 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, there is a tendency to deposit as foreign matter after film formation.
- Component S can be used alone or in combination of two or more.
- a photopolymerizable compound such as an oxetane compound having a cyclic ether group capable of at least one cation polymerization in a molecule, a force thione polymerization initiator, if necessary.
- Dyes such as malachite green
- photochromic agents such as tribromophenylsulfone, leucocrystal violet
- thermochromic agents plasticizers such as p-toluenesulfonamide
- pigments fillers, antifoaming agents, flame retardants, stable Agent, adhesion promoter, leveling Agent, exfoliation accelerator, antioxidant, fragrance, imaging agent, thermal crosslinking agent, etc.
- plasticizers such as p-toluenesulfonamide
- pigments such as a pigments, fillers, antifoaming agents, flame retardants, stable Agent, adhesion promoter, leveling Agent, exfoliation accelerator, antioxidant, fragrance, imaging agent, thermal crosslinking agent, etc.
- additives such as malachite green
- plasticizers such as p-toluenesulfonamide
- pigments fillers, antifoaming agents, flame retardants, stable Agent, adhesion promoter, leveling Agent, exfoliation
- the photosensitive resin composition of the present invention includes a solvent such as methanol, ethanol, acetone, methyl ethyl ketone, methyl cetyl sorb, cetyl solv solve, toluene, N, N-dimethylformamide, propylene glycol monomethyl ether, or the like. It can be dissolved in these mixed solvents to form a solution with a solid content of 30-60% by mass! This solution can be used as a coating solution for forming a photosensitive resin composition layer of a photosensitive element.
- a solvent such as methanol, ethanol, acetone, methyl ethyl ketone, methyl cetyl sorb, cetyl solv solve, toluene, N, N-dimethylformamide, propylene glycol monomethyl ether, or the like. It can be dissolved in these mixed solvents to form a solution with a solid content of 30-60% by mass! This solution can be used as a coating solution for forming a photosensitive
- the coating liquid is applied as a liquid resist on the surface of a metal plate and dried, for example, and then a protective film is applied. You may coat and use.
- the material of the metal plate include copper, copper alloys, nickel, chromium, iron, stainless steel and other iron alloys, preferably copper, copper alloys and iron 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 Consists of protective film 4 stacked on top.
- the support film 2 for example, a polymer film having heat resistance and solvent resistance such as polyethylene terephthalate, polypropylene, polyethylene, and polyester can be used.
- a polymer film having heat resistance and solvent resistance such as polyethylene terephthalate, polypropylene, polyethylene, and polyester.
- commercially available products include polypropylene films such as Alphan MA-410, E-200C (trade name) manufactured by Oji Paper Co., Ltd., Shin-Etsu Film Co., Ltd., PS manufactured by Teijin Limited.
- polyethylene terephthalate films such as series (eg, PS-25, trade name), HTF-01, HT R-02 (trade name) manufactured by Teijin DuPont Co., Ltd., and the like.
- the support film 2 preferably has a thickness of 1 to 100 111, more preferably 5 to 25 111. 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. There is a direction.
- One support film 2 is used as a support for the photosensitive resin composition layer, and the other is used as a protective film for the photosensitive resin composition, being laminated on both sides of the photosensitive resin composition layer. May be.
- the photosensitive resin composition layer 3 supports the solution after 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. It is preferably formed by coating on film 2 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, or no coater. Drying 70 ⁇ ; 150 ° C, 5 ⁇ 30 minutes Further, the amount of the remaining organic solvent in the photosensitive resin composition is preferably 2% by mass or less from the viewpoint of preventing the diffusion of the organic solvent in the subsequent step.
- the thickness of the photosensitive resin composition layer 3 varies depending on the use of the photosensitive element.
- the thickness after drying is preferably 1 to 100 m; preferably 50 to 50 m. Is more preferable. 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 decrease.
- the photosensitive resin composition layer 3 has a transmittance with respect to light having a wavelength of 405 nm of preferably 5 to 75%, more preferably 7 to 60%, and more preferably 10 to 40%. It is particularly preferred that there is. 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 228A type W beam spectrophotometer manufactured by Hitachi, Ltd.
- the protective film 4 has a smaller adhesive strength between the photosensitive resin composition layer 3 and the protective film 4 than the adhesive strength between the photosensitive resin composition layer 3 and the support film 2.
- a low fisheye film is preferred. “Fish eye” means that foreign materials, undissolved materials, oxidatively deteriorated materials, etc. of the material are contained in the film when the material is melted by heat and kneaded, extruded, biaxially stretched or cast. It is taken in.
- the protective film 4 for example, a polymer film having heat resistance and solvent resistance such as polyethylene terephthalate, polypropylene, polyethylene, and polyester can be used.
- a polymer film having heat resistance and solvent resistance such as polyethylene terephthalate, polypropylene, polyethylene, and polyester.
- commercially available products include polyethylene films such as NF-13, NF-15 (trade name) manufactured by Tamapoli Co., Ltd., Alfane MA-410, E-20 manufactured by Oji Paper Co., Ltd. oc (above, trade name), polypropylene film such as Shin-Etsu Film Co., Ltd., and polyethylene terephthalate film such as Teijin Co., Ltd. PS series (eg PS-25, trade name). It is not limited to.
- the thickness of the protective film 4 is preferably 1 to 100 111, more preferably 5 to 50 111, and even more preferably 5 to 30 111. 111 is particularly preferable. 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 include an intermediate layer such as a cushion layer, an adhesive layer, a light absorption layer, and a gas noble layer.
- the obtained photosensitive element 1 can be stored in the form of a sheet or wound around a roll in a roll shape.
- the support film 1 is wound up so as to be the outermost side.
- a moisture-proof end face separator on the end face of the roll-shaped photosensitive element roll from the standpoint of edge fusion resistance, which is preferable from the standpoint of end face protection.
- a packing method it is preferable to wrap and package in a black sheet with low moisture permeability.
- the core include plastics such as polyethylene resin, polypropylene resin, polystyrene resin, polychlorinated butyl resin, and ABS resin (acrylonitrile-butadiene-styrene copolymer).
- the resist pattern forming method of the present invention includes a lamination step of laminating a photosensitive resin composition layer containing the photosensitive resin composition on a circuit-forming substrate, and a predetermined step of the photosensitive resin composition layer. It includes at least an exposure step of irradiating the portion with actinic rays and photocuring the exposed portion, and a developing step of removing the photosensitive resin composition in the 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.
- the circuit forming substrate may be multi-layered and have wiring formed therein, or may have a small-diameter through hole! /.
- the protective film is gradually peeled off from the photosensitive resin composition layer and gradually exposed at the same time.
- Form the circuit of the circuit forming substrate on the surface of the photosensitive resin composition layer There is a method of laminating by adhering the photosensitive resin composition layer to a circuit-forming substrate while being in close contact with the surface to be formed and heating the photosensitive resin composition layer.
- 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. Pre-heat treatment of the substrate will be performed.
- Examples of a method for forming an exposed portion in the exposure step include a method of irradiating an image with an actinic ray through a negative or positive mask pattern called an artwork (mask exposure method).
- an artwork mask exposure method
- the support film existing 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 can be irradiated.
- 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.
- Examples of the active light source include known light sources such as carbon arc lamps, mercury vapor arc lamps, high pressure mercury lamps, xenon lamps, argon lasers and other solid state lasers such as YAG lasers, and semiconductor lasers. Those that effectively emit ultraviolet light, visible light, etc. are used.
- a developer corresponding to the photosensitive resin composition such as an alkaline aqueous solution, an aqueous developer, or an organic solvent developer is used, for example, a dip method, a nozzle method, or a spray.
- a dip method for well-known methods such as methods, rocking immersion, brushing, scraping Develop more.
- the high-pressure spray method is most suitable for improving the resolution. If necessary, two or more developing methods may be used in combination.
- a safe and stable solution having good operability such as an alkaline aqueous solution
- examples of 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, phosphoric acid.
- alkali metal phosphates such as sodium, sodium metal pyrophosphates such as sodium pyrophosphate and potassium pyrophosphate, and borax are used.
- the alkaline aqueous solution used for the development includes a diluted solution of 0.;! To 5 mass% sodium carbonate, a diluted solution of 0.;! To 5 mass% potassium carbonate, 0.;! To 5 mass%.
- Preferred is a dilute solution of sodium hydroxide, 0.;! To 5% by weight dilute solution of sodium tetraborate (borax).
- the pH of the alkaline aqueous solution is preferably in the range of 9 to 11; the temperature is adjusted according to the developability of the photosensitive resin composition layer.
- a surfactant, an antifoaming agent, a small amount of an organic solvent for accelerating development, and the like may be added to the alkaline aqueous solution.
- Examples of the aqueous developer include a developer comprising water or an alkaline aqueous solution and one or more organic solvents.
- Examples of the base of the alkaline aqueous solution include, in addition to the substances described above, for example, sodium metasilicate, tetramethylammonium hydroxide, ethanolamine, ethylenediamine, diethylenetriamine, 2-amino-2-hydroxymethyl-1, 3, 3-pan diol, 1,3-diaminopropanol-2, morpholine and the like.
- the pH of the developer is preferably as low as possible within a range where the resist can be sufficiently developed, and is preferably pH 8 to 12; more preferably pH 9 to 10;
- Examples of the organic solvent include acetone, ethyl acetate, alkoxyethanol having an alkoxy group having 1 to 4 carbon atoms, ethyl alcohol, isopropyl alcohol, butyl nole monourea, diethylene glycol mononole monomethinoatenore, Examples thereof include diethylene glycol-normonoethyl ether and diethylene glycol monobutyl ether. These can be used alone or in combination of two or more.
- the concentration of the organic solvent is usually 2 to 90% by mass, and the temperature should be adjusted according to the developability. Power S can be. Further, a small amount of a surfactant, an antifoaming agent and the like can be added to the aqueous developer.
- Examples of the organic solvent developer using an organic solvent alone include 1, 1, 1 trichloroethane, N methylpyrrolidone, N, N dimethylformamide, cyclohexanone, methylisoptyl ketone, ⁇ - Petite mouth rataton is listed. These organic solvent-based developers are preferably added with water in an amount 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 forms a conductor pattern by etching or sticking a circuit forming substrate on which a resist pattern is formed by the resist pattern forming method of the present invention. is there.
- the circuit forming substrate is etched and mated to the conductor layer of the circuit forming substrate using the formed resist pattern as a mask.
- Etching solutions used for etching include cupric chloride solution, ferric chloride solution, alkaline etching solution, and hydrogen peroxide etchant. Among these, from the viewpoint of good etch factor, It is preferable to use a diiron solution.
- plating methods for plating for example, copper plating such as copper sulfate plating, copper pyrophosphate plating, soldering such as high-throw soldering, watt bath (nickel sulfate nickel nickel chloride) ) Plating, nickel plating such as nickel sulfamate, hard gold plating, and gold plating such as soft gold plating.
- the resist pattern can be peeled off with a stronger alkaline aqueous solution than, for example, an alkaline aqueous solution used for development.
- a stronger alkaline aqueous solution for example, !!-10 mass% sodium hydroxide aqueous solution; !!-10 mass% potassium hydroxide aqueous solution, etc. are used.
- the peeling method include a dipping method and a spray method, and the dipping method and the spray method may be used alone or in combination.
- a printed wiring board is obtained as described above.
- the polymer weight average molecular weight was measured by gel permeation chromatography (GPC) and calculated by using a standard polystyrene calibration curve.
- GPC gel permeation chromatography
- Hitachi L-6000 manufactured by Hitachi, Ltd.
- Hitachi L-3300 type RI manufactured by Hitachi, Ltd.
- Table 3 shows the composition of TCDM-HABI
- Table 4 shows the composition of CDM-HABI
- Table 5 shows the composition of B-CIM (The composition of Hampford's product name).
- each photosensitive resin composition was uniformly coated on a 16 m-thick polyethylene terephthalate film (trade name: HTF-01, manufactured by Teijin DuPont Co., Ltd.) serving as a support film. Thereafter, it was dried using a hot air convection dryer at 70 ° C. and 110 ° C. to form a photosensitive resin composition layer having a thickness of 25 ⁇ 111 after drying. Subsequently, a protective film (manufactured by Tamapoly Co., Ltd., trade name: NF-15) was laminated on the photosensitive resin composition layer by roll pressing, and each of Examples 1 to 4 and Comparative Examples 1 to 6 was applied. A photosensitive element was obtained.
- a protective film manufactured by Tamapoly Co., Ltd., trade name: NF-15
- the copper surface of the copper-clad laminate (made by Hitachi Chemical Co., Ltd., trade name MCL-E-67), which is a glass epoxy material laminated with copper foil (thickness 35mm) on both sides, is equivalent to # 600 Polishing was performed using a polishing machine having a brush (manufactured by Sankei Co., Ltd.), washed with water, and dried with an air stream to obtain a copper-clad laminate (substrate).
- each photosensitive resin composition layer was laminated on the surface of the copper-clad laminate, and laminated (laminated) at 120 ° C under a pressure of 4 kgf / cm 2.
- a test piece was prepared.
- the support film was peeled off, and a 1 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.
- the photosensitivity of the photosensitive resin composition was evaluated by measuring the number of steps of the step tablet of the photocured film formed on the copper clad laminate. The evaluation of photosensitivity is indicated by the number of steps of the step tablet. The higher the step tablet, the higher the photosensitivity. Table 2 shows the results obtained.
- the resolution was exposed using a phototool having a wiring pattern of line width / space width 6/6 to 30/30 (unit: mm) as a negative for evaluation of resolution.
- the resolution is the smallest value (unit: ⁇ m) of the space width between the line widths of the resist pattern formed by development after exposure and where the unexposed areas are removed.
- Adhesion is a line width / space width of 6/6 to 30/30 as a negative for adhesion evaluation (unit : Exposure was performed using a phototool having a wiring pattern of m).
- the adhesion has the smallest value of the line width / space width (single value such that the unexposed part can be removed cleanly by the development processing after exposure, and the line is generated without meandering or chipping.
- Rank: ⁇ ) was used as an index of adhesion. The smaller the numerical value, the better the evaluation of adhesion. Table 2 shows the results obtained.
- the resist shape after development was observed using a scanning electron microscope (trade name: Hitachi scanning electron microscope S-500 mm).
- the resist shape is close to a rectangle!
- Sludge removability was evaluated by the following method. First, 0.6 m 2 of the photosensitive resin composition layer from which the protective film in each photosensitive element was removed was dissolved in 1 L of l% Na CO aqueous solution.
- the development residue was determined on the resist pattern surface after development using a scanning electron microscope (trade name: Hitachi Scanning Electron Microscope S-500A) as follows. It is desirable that there is almost no development residue.
- R 6 to 5 are not particularly described, they represent a hydrogen atom.
- R 6 to R 35 represent a hydrogen atom.
- the photosensitive resin compositions according to Examples;! To 4 have good results in all evaluations of step number sensitivity, adhesion, resolution, sludge removal, and resist shape. Obtained.
- the photosensitive resin compositions according to Comparative Examples 1 to 6 are inferior to the Examples in at least one of the evaluations of step step sensitivity, adhesion, resolution, sludge removal, and resist shape. As a result.
- a photosensitive resin composition, a photosensitive element, and a resist pattern that are sufficiently effective in improving resolution, adhesion, removal of sludge generated during the development process, and suppressing development residue.
- a forming method and a printed wiring board manufacturing method can be provided.
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Abstract
Description
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| Application Number | Priority Date | Filing Date | Title |
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| KR1020127012619A KR101289569B1 (ko) | 2006-12-19 | 2007-11-22 | 감광성 수지 조성물, 감광성 엘리먼트, 레지스트 패턴의 형성방법 및 프린트 배선판의 제조방법 |
| CN200780046551.XA CN101558356B (zh) | 2006-12-19 | 2007-11-22 | 感光性树脂组合物、感光性元件、抗蚀图案的形成方法及印刷电路板的制造方法 |
| KR1020137010400A KR20130049836A (ko) | 2006-12-19 | 2007-11-22 | 감광성 수지 조성물, 감광성 엘리먼트, 레지스트 패턴의 형성방법 및 프린트 배선판의 제조방법 |
| JP2008550073A JP5136423B2 (ja) | 2006-12-19 | 2007-11-22 | 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 |
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| JP2010197831A (ja) * | 2009-02-26 | 2010-09-09 | Hitachi Chem Co Ltd | 感光性樹脂組成物、並びにこれを用いた感光性エレメント、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 |
| JP2013061556A (ja) * | 2011-09-14 | 2013-04-04 | Asahi Kasei E-Materials Corp | 感光性樹脂組成物 |
| JP2023158423A (ja) * | 2022-04-18 | 2023-10-30 | 株式会社レゾナック | 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 |
| JP2024100770A (ja) * | 2018-06-22 | 2024-07-26 | 旭化成株式会社 | 感光性樹脂組成物およびレジストパターンの形成方法 |
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|---|---|---|---|---|
| CN106918991A (zh) * | 2010-07-13 | 2017-07-04 | 日立化成工业株式会社 | 感光性元件、抗蚀图案的形成方法、印刷电路布线板的制造方法及印刷电路布线板 |
| JP6022749B2 (ja) * | 2010-07-30 | 2016-11-09 | 日立化成株式会社 | 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製造方法、リードフレームの製造方法及びプリント配線板の製造方法 |
| CN102854750B (zh) * | 2010-07-30 | 2014-08-27 | 日立化成工业株式会社 | 感光性树脂组合物、感光性元件、抗蚀剂图形制法、引线框制法及线路板制法 |
| KR102171606B1 (ko) * | 2012-11-20 | 2020-10-29 | 쇼와덴코머티리얼즈가부시끼가이샤 | 감광성 수지 조성물, 감광성 엘리먼트, 레지스터 패턴의 형성 방법 및 프린트 배선판의 제조 방법 |
| CN106132104A (zh) * | 2016-07-05 | 2016-11-16 | 浙江近点电子股份有限公司 | 一种软性线路板的生产工艺 |
| CN111258180B (zh) * | 2018-11-30 | 2024-03-08 | 常州正洁智造科技有限公司 | 六芳基双咪唑类混合光引发剂及应用 |
| CN112062721B (zh) * | 2019-05-23 | 2023-06-30 | 常州正洁智造科技有限公司 | 能够提升体系稳定性的habi类光引发剂及其应用 |
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| JP2004317850A (ja) * | 2003-04-17 | 2004-11-11 | Hitachi Chem Co Ltd | 感光性樹脂組成物、これを用いた感光性エレメント、レジストパターンの製造方法およびプリント配線板の製造方法 |
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| JP2008058636A (ja) * | 2006-08-31 | 2008-03-13 | Fujifilm Corp | パターン形成材料及びパターン形成方法 |
| JP4936848B2 (ja) * | 2006-10-16 | 2012-05-23 | 旭化成イーマテリアルズ株式会社 | 感光性樹脂組成物およびその積層体 |
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| JP2004012812A (ja) * | 2002-06-06 | 2004-01-15 | Hitachi Chem Co Ltd | 感光性樹脂組成物、感光性エレメント及びプリント配線板の製造方法 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010197831A (ja) * | 2009-02-26 | 2010-09-09 | Hitachi Chem Co Ltd | 感光性樹脂組成物、並びにこれを用いた感光性エレメント、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 |
| JP2013061556A (ja) * | 2011-09-14 | 2013-04-04 | Asahi Kasei E-Materials Corp | 感光性樹脂組成物 |
| JP2024100770A (ja) * | 2018-06-22 | 2024-07-26 | 旭化成株式会社 | 感光性樹脂組成物およびレジストパターンの形成方法 |
| JP2023158423A (ja) * | 2022-04-18 | 2023-10-30 | 株式会社レゾナック | 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 |
| JP7609119B2 (ja) | 2022-04-18 | 2025-01-07 | 株式会社レゾナック | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5136423B2 (ja) | 2013-02-06 |
| KR20120068988A (ko) | 2012-06-27 |
| KR101289569B1 (ko) | 2013-07-24 |
| TWI370951B (ja) | 2012-08-21 |
| KR20090084941A (ko) | 2009-08-05 |
| CN101558356A (zh) | 2009-10-14 |
| CN101558356B (zh) | 2013-09-25 |
| JPWO2008075531A1 (ja) | 2010-04-08 |
| TW200848930A (en) | 2008-12-16 |
| KR20130049836A (ko) | 2013-05-14 |
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