WO2009128369A1 - 感光性樹脂組成物及びその積層体 - Google Patents
感光性樹脂組成物及びその積層体 Download PDFInfo
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- WO2009128369A1 WO2009128369A1 PCT/JP2009/057139 JP2009057139W WO2009128369A1 WO 2009128369 A1 WO2009128369 A1 WO 2009128369A1 JP 2009057139 W JP2009057139 W JP 2009057139W WO 2009128369 A1 WO2009128369 A1 WO 2009128369A1
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- photosensitive resin
- resist pattern
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- resin composition
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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
Definitions
- the present invention uses a photosensitive resin composition that can be developed with an alkaline aqueous solution, a photosensitive resin laminate in which a photosensitive resin layer comprising the photosensitive resin composition is laminated on a support layer, and the photosensitive resin laminate.
- the present invention relates to a method for forming a resist pattern on a substrate and various uses of the resist pattern.
- the present invention relates to the manufacture of printed wiring boards, the manufacture of flexible printed wiring boards, the manufacture of lead frames for IC chip mounting (hereinafter referred to as lead frames), the precision processing of metal foils such as the manufacture of metal masks, BGA (ball Tape substrates typified by semiconductor package manufacturing such as grid arrays and CSP (chip size packages), TAB (Tape Automated Bonding) and COF (Chip On Film: a semiconductor IC mounted on a film-like fine wiring board)
- the present invention relates to a photosensitive resin composition that provides a resist pattern suitable for manufacturing members such as ITO bumps, address electrodes, or electromagnetic wave shields in the field of flat panel display and semiconductor bumps.
- the photolithographic method is a method in which a photosensitive resin composition is applied onto a substrate, pattern exposure is performed to polymerize and cure the exposed portions of the photosensitive resin composition, and unexposed portions are removed with a developer to form a resist pattern on the substrate. After forming a conductor pattern by etching or plating, the resist pattern is peeled off from the substrate to form a conductor pattern on the substrate.
- a method for producing a printed wiring board using the dry film resist will be briefly described below.
- the dry film resist has a protective layer, for example, a polyethylene film
- a photosensitive resin layer and a support layer are laminated on a substrate such as a copper clad laminate using a laminator so that the substrate, the photosensitive resin layer, and the support layer are in this order.
- the exposed portion is polymerized and cured by exposing the photosensitive resin layer to ultraviolet rays containing i-line (365 nm) emitted from an ultra-high pressure mercury lamp through a photomask having a wiring pattern.
- the support layer such as polyethylene terephthalate, is then peeled off.
- an unexposed portion of the photosensitive resin layer is dissolved or dispersed and removed with a developer, for example, an aqueous solution having weak alkalinity, to form a resist pattern on the substrate.
- a method of removing a metal portion not covered with a resist by etching and a method of plating There is a method to attach metal. In particular, the former method is frequently used recently because of the simplicity of the process.
- the method of removing the metal portion by etching the metal in the hole is prevented from being etched by covering the through hole (through hole) of the substrate and the via hole for interlayer connection with a cured resist film. This method is called a tenting method. In the tenting method, the cured resist film is required not to be broken by etching, that is, excellent in tent property.
- the etching process for example, cupric chloride, ferric chloride, and a copper ammonia complex solution are used.
- Patent Document 1 discloses a photosensitive resin composition having four (meth) acrylates having a specific number of propylene oxide groups as unsaturated compounds in the photosensitive resin composition.
- the tent property is not excellent when the compounds exemplified in the examples are used.
- Patent Document 2 discloses a photosensitive resin composition containing a photopolymerizable unsaturated compound having four (meth) acrylate groups.
- the tent property has been demanded for the tent property.
- the support layer is not intended when the thickness of the photosensitive resin layer is reduced. There is also a problem that it peels off easily. Therefore, even in a laminate having a thin photosensitive layer, it is required that the tent property is good and the support layer does not peel off unintentionally.
- the problem to be solved by the present invention is that even when the thickness of the photosensitive resin layer is as thin as 3 to 15 ⁇ m, the tent property is good and the support layer does not peel unintentionally. It is an object of the present invention to provide a photosensitive resin laminate having sufficient peel strength.
- the present inventor has found that the above problems can be solved unexpectedly by the following configuration, and has completed the present invention. That is, the present invention is as follows.
- a photosensitive resin laminate including a photosensitive resin layer and a support layer made of the photosensitive resin composition according to [1] or [2].
- a resist including a laminating step of laminating the photosensitive resin layer of the photosensitive resin laminate according to [3] above on a substrate, an exposing step of exposing active light, and a developing step of removing unexposed portions. Pattern formation method.
- the photosensitive resin laminate of the present invention has good tent properties even when the thickness of the photosensitive resin layer is as thin as 3 to 15 ⁇ m, and the support layer does not peel unintentionally. It has the effect that sufficient peel strength can be obtained.
- the photosensitive resin composition comprising at least one compound selected from the group consisting of compounds represented by the formula: is described in detail below.
- the compounding quantity of each component is described in the mass% when the whole solid content in the photosensitive resin composition is made into a reference
- Alkali-soluble resin is a vinyl resin containing a carboxyl group, such as (meth) acrylic acid, (meth) acrylic acid ester, (meth) acrylonitrile, (meth) acrylamide, etc. It is a copolymer.
- the alkali-soluble resin preferably contains a carboxyl group and has an acid equivalent of 100 to 600.
- the acid equivalent refers to the mass of the alkali-soluble resin having 1 equivalent of a carboxyl group therein.
- the acid equivalent is more preferably 250 or more and 450 or less.
- the acid equivalent is preferably 100 or more from the viewpoint of improving development resistance and improving resolution and adhesion, and is preferably 600 or less from the viewpoint of improving developability and peelability.
- the acid equivalent is measured by a potentiometric titration method using a Hiranuma automatic titrator (COM-555) manufactured by Hiranuma Sangyo Co., Ltd., using 0.1 mol / L sodium hydroxide.
- the weight average molecular weight of the alkali-soluble resin is preferably 70,000 or more and 220,000 or less.
- the weight average molecular weight of the alkali-soluble resin is preferably 220,000 or less from the viewpoint of improving developability, and is preferably 70,000 or more from the viewpoint of tent properties and aggregate properties.
- the weight average molecular weight of the alkali-soluble resin is more preferably 70,000 or more and 200,000 or less, and more preferably 70,000 or more and 120,000 or less.
- the weight average molecular weight was determined by gel permeation chromatography (GPC) manufactured by JASCO Corporation (pump: Gulliver, PU-1580 type, column: Shodex (registered trademark) manufactured by Showa Denko KK (KF-807, KF-806M). , KF-806M, KF-802.5) in series, moving bed solvent: tetrahydrofuran, polystyrene standard sample (use of calibration curve by Shodex STANDARD SM-105 manufactured by Showa Denko KK) as polystyrene conversion.
- GPC gel permeation chromatography
- the alkali-soluble polymer is preferably a copolymer comprising at least one or more of the first monomers described below and at least one or more of the second monomers described below.
- the first monomer is a carboxylic acid or acid anhydride having one polymerizable unsaturated group in the molecule. Examples include (meth) acrylic acid, fumaric acid, cinnamic acid, crotonic acid, itaconic acid, maleic anhydride, and maleic acid half ester. Among these, (meth) acrylic acid is particularly preferable.
- (meth) acryl refers to acryl and / or methacryl. The same applies hereinafter.
- the second monomer is a non-acidic monomer having at least one polymerizable unsaturated group in the molecule.
- the copolymerization ratio of the first monomer and the second monomer is preferably 10 to 60% by mass for the first monomer and 40 to 90% by mass for the second monomer. More preferably, the first monomer is 15 to 35% by mass, and the second monomer is 65 to 85% by mass.
- the alkali-soluble resin contains a carboxyl group, has an acid equivalent of 100 to 600, and a weight average molecular weight of 70,000 to 220,000 from the viewpoint of tent properties and aggregate properties. It is a preferred embodiment of the invention.
- the ratio of the alkali-soluble polymer to the total of the photosensitive resin composition is in the range of 20 to 90% by mass, preferably 40 to 60% by mass.
- the resist pattern formed by exposure and development is preferably 20% by mass or more and 90% by mass or less from the viewpoint that the resist pattern has sufficient resistance in resist characteristics, for example, tenting, etching, and various plating processes.
- (B) Compound having a photopolymerizable unsaturated double bond
- the compound having a photopolymerizable unsaturated double bond is a compound having at least one ethylenically unsaturated bond in the molecule.
- the photosensitive resin composition (b) as a compound having a photopolymerizable unsaturated double bond, the following general formula (I): ⁇ Wherein R 1 , R 2 , R 3 , and R 4 are each independently H or CH 3 , R 5 is independently a propyl group or a butyl group, and n 1 , n 2 , N 3 , n 4 , m 1 , m 2 , m 3 , and m 4 are each independently 0 or a positive integer, and n 1 + n 2 + n 3 + n 4 is an integer from 21 to 50 , And m 1 + m 2 + m 3 + m 4 is an integer from 0 to 19, where the sequence of the repeating unit of —
- At least one compound selected from the group consisting of the compounds represented by the above general formula (I) as a commercial product, for example, R 1 , R 2 , R 3 , and R 4 are H, A compound in which n 1 , n 2 , n 3 , and n 4 are positive integers, n 1 + n 2 + n 3 + n 4 is 35, and m 1 + m 2 + m 3 + m 4 is 0 (Shin Nakamura Chemical) NK ester ATM-35E manufactured by Kogyo Co., Ltd. Further, at least one compound selected from the group consisting of the compounds represented by the above general formula (I) can also be obtained by an appropriate synthesis method.
- start It can be obtained by esterifying a product obtained by reacting 8 moles of propylene oxide with a reaction product of pentaerythritol and 28 moles of ethylene oxide as raw materials with acrylic acid in the presence of a suitable acid catalyst.
- (B) As a compound having an unsaturated double bond capable of being photopolymerized, among at least one compound selected from the group consisting of compounds represented by the above general formula (I), from the viewpoint of reducing aggregates during development In particular, a compound in which m 1 + m 2 + m 3 + m 4 is 0 is preferable.
- At least one compound selected from the group consisting of the compounds represented by the general formula (II) include R 5 , R 6 , R 7 , and R 8 are H, and l 1 , l 2 , Compounds in which l 3 and l 4 are 0 (NK ester A-TMMT manufactured by Shin-Nakamura Chemical Co., Ltd.), R 5 , R 6 , R 7 , and R 8 are H, and l 1 , l 2 , L 3 , and l 4 are each independently 0 or a positive integer, and l 1 + l 2 + l 3 + l 4 is 4 (SR-494, manufactured by Sartomer Japan, Inc.). .
- At least one compound selected from the group consisting of compounds represented by the above general formula (II) can also be obtained by an appropriate synthesis method.
- R 1 , R 2 , R 3 , and R 4 are H, n 1 + n 2 + n 3 + n 4 is 28, and m 1 + m 2 + m 3 + m 4 is 8, then start A product obtained by reacting 8 mol of propylene oxide with a product obtained by reacting pentaerythritol with 28 mol of ethylene oxide as a raw material can be obtained by esterification with acrylic acid in the presence of a suitable acid catalyst.
- (b) a compound having a photopolymerizable unsaturated double bond shown below as the photopolymerizable unsaturated compound can be used.
- other (b) photopolymerizable unsaturated compounds include 1,6-hexanediol di (meth) acrylate, 1,4-cyclohexanediol di (meth) acrylate, polyethylene glycol di (meth) acrylate, polyethylene glycol Polypropylene glycol di (meth) acrylate, 2-di (p-hydroxyphenyl) propane di (meth) acrylate, 2,2-bis [(4- (meth) acryloxypolyalkyleneoxy) phenyl] propaneglycerol tri (meth) acrylate , Trimethylolpropane tri (meth) acrylate, polyoxypropyltrimethylolpropane tri (meth) acrylate, polyoxyethy
- urethane compounds may be mentioned as other (b) unsaturated compounds capable of photopolymerization.
- examples of urethane compounds include hexamethylene diisocyanate, tolylene diisocyanate, or diisocyanate compounds such as 2,2,4-trimethylhexamethylene diisocyanate, and compounds having a hydroxyl group and a (meth) acryl group in one molecule, such as , Urethane compounds with 2-hydroxypropyl acrylate and oligopropylene glycol monomethacrylate.
- Urethane compounds with 2-hydroxypropyl acrylate and oligopropylene glycol monomethacrylate there is a reaction product of hexamethylene diisocyanate and oligopropylene glycol monomethacrylate (Nippon Yushi Co., Ltd., Blenmer PP1000). These may be used alone or in combination of two or more.
- the content of the entire compound having an unsaturated double bond capable of photopolymerization is preferably from 5 to 75% by mass based on the total amount of the photosensitive resin composition.
- the content is 5% by mass or more from the viewpoint that the resist pattern formed by exposure sufficiently exhibits the performance as a resist, and 75% by mass or less from the viewpoint of cold flow.
- the content of at least one compound selected from the group consisting of the compounds represented by the general formula (I) with respect to the total amount of the photosensitive resin composition is preferably 5 to 25% by mass.
- the content is preferably 5% by mass or more from the viewpoint of tent properties, and preferably 25% by mass or less from the viewpoint of resolution.
- the content of at least one compound selected from the group consisting of the compounds represented by the general formula (II) with respect to the total amount of the photosensitive resin composition is preferably 10 to 40% by mass.
- the content is preferably 10% by mass or more from the viewpoint of tent properties, and preferably 40% by mass or less from the viewpoint of tackiness.
- (C) Photopolymerization initiator For the photosensitive resin composition, those generally known as (c) photopolymerization initiators can be used.
- the content of the photopolymerization initiator (c) contained in the photosensitive resin composition is in the range of 0.1 to 20% by mass, and more preferably in the range of 0.5 to 10% by mass.
- the content is preferably 0.1% by mass or more from the viewpoint of obtaining sufficient sensitivity, and 20% by mass from the viewpoint of sufficiently transmitting light to the bottom surface of the resist and obtaining good high resolution. % Or less is preferable.
- Photoinitiators include 2-ethylanthraquinone, octaethylanthraquinone, 1,2-benzanthraquinone, 2,3-benzanthraquinone, 2-phenylanthraquinone, 2,3-diphenylanthraquinone, 1-chloroanthraquinone, 2-chloro Anthraquinone, 2-methylanthraquinone, 1,4-naphthoquinone, 9,10-phenanthraquinone, 2-methyl-1,4-naphthoquinone, 9,10-phenanthraquinone, 2-methyl-1,4-naphthoquinone Quinones such as 2,3-dimethylanthraquinone and 3-chloro-2-methylanthraquinone, aromatic ketones such as benzophenone, Michler's ketone [4,4'-bis (dimethylamino) benzophenone],
- the content of these compounds as an initiator with respect to the entire photosensitive resin composition is preferably in the range of 0.1 to 20% by mass, and more preferably in the range of 0.5 to 10% by mass.
- the content is preferably 0.1% by mass or more from the viewpoint of obtaining sufficient sensitivity, and the light is sufficiently transmitted to the bottom surface of the resist (the contact surface of the resist with the substrate) to achieve good high resolution. From the viewpoint of obtaining properties, it is preferably 10% by mass or less.
- the photosensitive resin composition may contain a leuco dye, a fluoran dye, or a coloring substance as the other component (d).
- the leuco dye include tris (4-dimethylaminophenyl) methane [leucocrystal violet] and bis (4-dimethylaminophenyl) phenylmethane [leucomalachite green].
- leuco crystal violet is preferable to use as the leuco dye.
- the content is preferably 0.1 to 10% by mass in the photosensitive resin composition.
- the content is preferably 0.1% by mass or more from the viewpoint of expression of contrast, and is preferably 10% by mass or less from the viewpoint of maintaining storage stability.
- the coloring substance include fuchsin, phthalocyanine green, auramin base, paramadienta, crystal violet, methyl orange, Nile blue 2B, Victoria blue, malachite green (Eizen (registered trademark) MALACHITE GREEN manufactured by Hodogaya Chemical Co., Ltd.), basic blue. 20, Diamond Green (Eizen (registered trademark) DIAMOND GREEN GH manufactured by Hodogaya Chemical Co., Ltd.).
- the addition amount is preferably 0.001 to 1% by mass in the photosensitive resin composition.
- a content of 0.001% by mass or more is preferable from the viewpoint of improving handleability, and a content of 1% by mass or less is preferable from the viewpoint of maintaining storage stability.
- the photosensitive resin composition may contain an N-aryl- ⁇ -amino acid compound from the viewpoint of sensitivity.
- N-aryl- ⁇ -amino acid compound N-phenylglycine is preferable.
- the content is preferably 0.01% by mass or more and 10% by mass or less.
- the photosensitive resin composition may contain a halogen compound.
- the halogen compound include amyl bromide, isoamyl bromide, isobutylene bromide, ethylene bromide, diphenylmethyl bromide, benzyl bromide, methylene bromide, tribromomethylphenyl sulfone, carbon tetrabromide, tris (2 , 3-dibromopropyl) phosphate, trichloroacetamide, amyl iodide, isobutyl iodide, 1,1,1-trichloro-2,2-bis (p-chlorophenyl) ethane, chlorinated triazine compounds, among others. Tribromomethylphenylsulfone is preferably used. When the halogen compound is contained, the content is 0.01 to 3% by mass in the photosensitive resin composition.
- the photosensitive resin composition is at least one selected from the group consisting of radical polymerization inhibitors, benzotriazoles, and carboxybenzotriazoles. You may further contain a compound more than a seed
- the radical polymerization inhibitor include p-methoxyphenol, hydroquinone, pyrogallol, naphthylamine, tert-butylcatechol, cuprous chloride, 2,6-di-tert-butyl-p-cresol, 2,2′-methylenebis. (4-methyl-6-tert-butylphenol), 2,2′-methylenebis (4-ethyl-6-tert-butylphenol), nitrosophenylhydroxyamine aluminum salt, diphenylnitrosamine and the like.
- benzotriazoles include 1,2,3-benzotriazole, 1-chloro-1,2,3-benzotriazole, bis (N-2-ethylhexyl) aminomethylene-1,2,3-benzotriazole, Examples thereof include bis (N-2-ethylhexyl) aminomethylene-1,2,3-tolyltriazole, bis (N-2-hydroxyethyl) aminomethylene-1,2,3-benzotriazole, and the like.
- carboxybenzotriazoles examples include 4-carboxy-1,2,3-benzotriazole, 5-carboxy-1,2,3-benzotriazole, and N- (N, N-di-2-ethylhexyl) amino.
- Examples include methylenecarboxybenzotriazole, N- (N, N-di-2-hydroxyethyl) aminomethylenecarboxybenzotriazole, N- (N, N-di-2-ethylhexyl) aminoethylenecarboxybenzotriazole, and the like.
- the total content of the radical polymerization inhibitor, benzotriazoles, and carboxybenzotriazoles is preferably 0.01 to 3% by mass, more preferably 0.05 to 1%, based on the entire photosensitive resin composition. % By mass.
- the content is preferably 0.01% by mass or more from the viewpoint of imparting storage stability to the photosensitive resin composition, and more preferably 3% by mass or less from the viewpoint of maintaining sensitivity.
- the photosensitive resin composition may contain a plasticizer as necessary.
- plasticizers include polyethylene glycol, polypropylene glycol, polyoxypropylene polyoxyethylene ether, polyoxyethylene monomethyl ether, polyoxypropylene monomethyl ether, polyoxyethylene polyoxypropylene monomethyl ether, and polyoxyethylene monoethyl.
- Glycols and esters such as ether, polyoxypropylene monoethyl ether, polyoxyethylene polyoxypropylene monoethyl ether, phthalic acid esters such as diethyl phthalate, o-toluenesulfonic acid amide, p-toluenesulfonic acid amide, citric acid Tributyl, triethyl citrate, acetyl triethyl citrate, acetyl tri-n-propyl citrate, tri-n-acetyl citrate Such as chill, and the like.
- the content of the plasticizer is preferably 5 to 50% by mass, more preferably 5 to 30% by mass in the photosensitive resin composition.
- the content is preferably 5% by mass or more from the viewpoint of suppressing development time delay and imparting flexibility to the cured film, and is preferably 50% by mass or less from the viewpoint of suppressing insufficient curing and cold flow.
- the photosensitive resin laminate includes a photosensitive resin layer made of a photosensitive resin composition and a support layer. If necessary, you may have a protective layer on the surface on the opposite side to the support layer side of the photosensitive resin layer.
- the support layer used here is preferably a transparent layer that transmits light emitted from the exposure light source.
- a support layer for example, polyethylene terephthalate film, polyvinyl alcohol film, polyvinyl chloride film, vinyl chloride copolymer film, polyvinylidene chloride film, vinylidene chloride copolymer film, polymethyl methacrylate copolymer film,
- examples include polystyrene film, polyacrylonitrile film, styrene copolymer film, polyamide film, and cellulose derivative film. These films can be stretched if necessary.
- the haze is preferably 5 or less.
- a thinner film is advantageous in terms of image forming property and economic efficiency, but a film having a thickness of 10 to 30 ⁇ m is preferably used in order to maintain the strength.
- the protective layer used in the photosensitive resin laminate is that the protective layer is sufficiently smaller than the support layer in terms of adhesion to the photosensitive resin layer and can be easily peeled off.
- a polyethylene film or a polypropylene film can be preferably used as the protective layer.
- a film having excellent releasability disclosed in JP-A-59-202457 can be used.
- the thickness of the protective layer is preferably 10 to 100 ⁇ m, more preferably 10 to 50 ⁇ m.
- the thickness of the photosensitive resin layer in the photosensitive resin laminate varies depending on the application, but is preferably 5 to 100 ⁇ m, more preferably 7 to 60 ⁇ m. The thinner the resolution, the higher the resolution, and the thicker the film strength. .
- a publicly known method can be adopted as a method for producing a photosensitive resin laminate by sequentially laminating a support layer, a photosensitive resin layer, and, if necessary, a protective layer.
- the photosensitive resin composition used for the photosensitive resin layer is mixed with a solvent that dissolves the photosensitive resin composition to form a uniform solution, which is first coated on the support layer using a bar coater or roll coater, and then dried to form the support layer.
- a photosensitive resin layer made of a photosensitive resin composition can be laminated thereon.
- the thickness of the photosensitive resin layer after drying is preferably 1 to 100 ⁇ m, more preferably 2 to 50 ⁇ m, and still more preferably 3 to 15 ⁇ m.
- the thickness is preferably 3 ⁇ m or more from the viewpoint of tent properties, and is preferably 15 ⁇ m or less from the viewpoint of resolution.
- a photosensitive resin laminate can be produced by laminating a protective layer on the photosensitive resin layer.
- the solvent that dissolves the photosensitive resin composition include ketones typified by methyl ethyl ketone (MEK), alcohols typified by methanol, ethanol, and isopropanol.
- MEK methyl ethyl ketone
- the solvent is preferably added to the photosensitive resin composition so that the viscosity of the solution of the photosensitive resin composition applied on the support layer is 500 to 4000 mPa ⁇ s at 25 ° C.
- the resist pattern using the photosensitive resin laminate can be formed by a process including a laminating process for laminating, an exposing process for exposing active light, and a developing process for removing unexposed portions.
- a laminating process for laminating an exposing process for exposing active light
- a developing process for removing unexposed portions an example of a specific method will be shown.
- the substrate a copper-clad laminate is used for the production of a printed wiring board, and a glass substrate such as a plasma display panel substrate, a surface electrolysis display substrate, an organic EL encapsulation is used for the production of an uneven substrate. Examples thereof include a stopper cap, a silicon wafer formed with a through hole, and a ceramic substrate.
- a plasma display substrate is a substrate in which an electrode is formed on glass, a dielectric layer is applied, a partition wall glass paste is then applied, and a partition wall glass paste portion is subjected to sandblasting to form a partition wall. . Those obtained by subjecting these glass substrates to sand blasting are uneven substrates.
- a laminating process is performed using a laminator.
- the protective layer is peeled off, and then the photosensitive resin layer is laminated on the substrate surface by thermocompression bonding with the laminator.
- the photosensitive resin layer may be laminated only on one side of the substrate surface, or may be laminated on both sides.
- the heating temperature at this time is generally about 40 to 160 ° C.
- adhesion and chemical resistance are improved by performing the thermocompression bonding twice or more.
- a two-stage laminator provided with two rolls may be used, or it may be repeatedly crimped through a roll several times.
- an exposure process is performed using an exposure machine. If necessary, the support layer is peeled off and exposed to active light through a photomask.
- the exposure amount is determined by the light source illuminance and the exposure time. The exposure amount may be measured using a light meter.
- a direct drawing exposure method may be used. Direct drawing exposure is a method in which exposure is performed by directly drawing on a substrate without using a photomask.
- the light source for example, a semiconductor laser having a wavelength of 350 to 410 nm or an ultrahigh pressure mercury lamp is used.
- the drawing pattern is controlled by a computer, and the exposure amount in this case is determined by the light source illuminance and the moving speed of the substrate.
- a developing process is performed using a developing device. After the exposure, if there is a support layer on the photosensitive resin layer, this is removed if necessary, and then the unexposed portion is developed and removed using a developer of an alkaline aqueous solution to obtain a resist image.
- an aqueous solution of Na 2 CO 3 or K 2 CO 3 is used as the alkaline aqueous solution.
- the alkaline aqueous solution is appropriately selected according to the characteristics of the photosensitive resin layer, but a Na 2 CO 3 aqueous solution having a concentration of about 0.2 to 2% by mass and about 20 to 40 ° C. is generally used.
- a surface active agent, an antifoaming agent, a small amount of an organic solvent for promoting development, and the like may be mixed in the alkaline aqueous solution.
- a resist pattern can be obtained through each of the above steps, but in some cases, a heating step of about 100 to 300 ° C. can be further performed. By carrying out this heating step, chemical resistance can be further improved.
- a heating step of about 100 to 300 ° C. can be further performed.
- chemical resistance can be further improved.
- a hot-air, infrared, or far-infrared heating furnace can be used.
- the printed wiring board can be obtained through the following steps following the above-described resist pattern forming method using a copper-clad laminate or a flexible substrate as a substrate.
- a conductor pattern is manufactured by using a known method such as an etching method or a plating method on a copper surface exposed by development.
- the resist pattern is peeled from the substrate with an aqueous solution having alkalinity stronger than that of the developer to obtain a desired printed wiring board.
- the alkaline aqueous solution for stripping (hereinafter also referred to as “stripping solution”) is not particularly limited, but an aqueous solution of NaOH or KOH having a concentration of about 2 to 5% by mass and a temperature of about 40 to 70 ° C. is generally used. A small amount of a water-soluble solvent can also be added to the stripping solution.
- the lead frame can be obtained by performing the following steps following the above-described resist pattern forming method using a metal plate, for example, copper, copper alloy, or iron-based alloy as a substrate. First, a conductive pattern is formed by etching the substrate exposed by development. Thereafter, the resist pattern is peeled off by a method similar to the method for manufacturing a printed wiring board described above to obtain a desired lead frame.
- a metal plate for example, copper, copper alloy, or iron-based alloy as a substrate.
- a semiconductor package can be obtained through the following steps following the above-described resist pattern forming method using a wafer on which a circuit as an LSI has been formed as a substrate. First, the opening exposed by development is subjected to columnar plating with copper or solder to form a conductor pattern. Thereafter, the resist pattern is peeled off by the same method as the above-described printed wiring board manufacturing method, and a thin metal layer other than the columnar plating is removed by etching to obtain a desired semiconductor package.
- ⁇ Manufacturing method of substrate having concave / convex pattern> Substrates that can be sandblasted, for example, glass substrates, glass substrates coated with glass rib paste, ceramic substrates, metal substrates such as stainless steel, silicon wafers, ores such as sapphire, organic substrates such as synthetic resin layers
- a photosensitive resin laminate is laminated on the material in the same manner as in the above ⁇ resist pattern forming method>, and exposure and development are performed. After that, by passing through a sandblasting process in which a blast material is sprayed from the formed resist pattern to cut to a desired depth, and a resin part remaining on the substrate is removed from the substrate with an alkaline stripping solution or the like A fine pattern is formed on the substrate.
- blasting material used in the above sandblasting process known materials can be used. For example, fine particles of about 2 to 100 ⁇ m such as SiC, SiO 2 , Al 2 O 3 , CaCO 3 , ZrO 2 , glass, stainless steel, etc. are used. It is done.
- the film thickness of the photosensitive resin layer after drying was 10 ⁇ m.
- a 35 ⁇ m thick polyethylene film (GF-858 manufactured by Tamapoly Co., Ltd.) was laminated as a protective layer on the surface of the photosensitive resin layer to obtain a photosensitive resin laminate.
- ⁇ Board> The evaluation was made using a 0.4 mm thick copper clad laminate in which a 35 ⁇ m copper foil was laminated on an insulating resin. In the following description, this is described only when other substrates are used.
- ⁇ Laminate> While peeling off the protective layer of the photosensitive resin laminate, lamination was performed at a roll temperature of 105 ° C. using a hot roll laminator (AL-700, manufactured by Asahi Kasei Engineering Co., Ltd.). The air pressure was 0.35 MPa, and the laminating speed was 1.5 m / min.
- the photosensitive resin layer was exposed with a direct drawing exposure machine (Paragon 9000, manufactured by Orbotech Co., Ltd.) at 8 W and an exposure amount of 16 mJ / cm 2 .
- ⁇ Stripping strength of support layer (PET)> A substrate in which the photosensitive resin layer of the photosensitive resin laminate was laminated on one side by the above method was prepared, and this was left to stand for 24 hours at 23 ° C. and 50% relative humidity, and then a 1-inch wide support layer (PET) was formed. Peel off 180 °, measure its strength with Tensilon RTM-500 (manufactured by Toyo Seiki), and rank as follows: A: The maximum average value of peel strength is 3 gf or more. B: The maximum average value of peel strength is less than 3 gf.
- B-1 Ternary copolymer (methacrylic acid 25% by mass, methyl methacrylate 65% by mass, butyl acrylate 10% by mass (weight average molecular weight 100,000, acid equivalent 344)
- B-2 Ternary copolymer (methacrylic acid 25% by mass, methyl methacrylate 65% by mass, butyl acrylate 10% by mass (weight average molecular weight 200,000, acid equivalent 344)
- B-3 Ternary copolymer (methacrylic acid 25% by mass, methyl methacrylate 50% by mass, styrene 25% by mass (weight average molecular weight 50,000, acid equivalent 344)
- M-1 Tetraacrylate with a total of 35 moles of ethylene oxide added to the four terminals of pentaerythritol (Shin-Nakamura Chemical ATM-35E)
- M-2 tetraacrylate obtained by adding 1 mol of ethylene oxide to each of the four terminals of pentaerythritol (SR-494, manufactured by Sartomer Japan, Inc.)
- M-3 Tetraacrylate with a total of 28 moles of ethylene oxide and 8 moles of propylene oxide added to the four terminals of pentaerythritol
- M-4 Polyethylene glycol with an average of 12 moles of propylene oxide added to both ends of ethylene oxide
- Polyalkylene glycol dimethacrylate M-5 with an average of 3 moles each added Polyethylene glycol dimethacrylate with an average of 5 moles of ethylene oxide added to each end of bisphenol A (FA-321M manufactured by Hitachi Chemical Co., Ltd.)
- I-1 9-phenylacridine
- I-2 N-phenylglycine
- I-3 2- (o-chlorophenyl) -4,5-diphenylimidazole dimer
- I-4 1-phenyl-3- (4- tert-butyl-styryl) -5- (4-tert-butyl-phenyl) -pyrazoline
- D-1 Diamond Green
- D-2 Leuco Crystal Violet
- F-1 Methyl ethyl ketone
- Comparative Example 1 since a compound having a photopolymerizable unsaturated double bond corresponding to the compound represented by the general formula (I) was not used, there was a problem that the peeling strength of PET deteriorated.
- the present invention relates to the manufacture of printed wiring boards, flexible printed wiring boards, IC chip mounting lead frames (hereinafter referred to as lead frames), metal foil precision processing such as metal mask manufacturing, BGA (ball grid array), Manufacture of semiconductor packages such as CSP (chip size package), manufacture of tape substrates represented by TAB (Tape Automated Bonding) and COF (Chip On Film: a semiconductor IC mounted on a film-like fine wiring board), semiconductor It can be suitably used for the production of bumps, the production of members such as ITO electrodes, address electrodes and electromagnetic wave shields in the field of flat panel displays.
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Materials For Photolithography (AREA)
- Macromonomer-Based Addition Polymer (AREA)
- Manufacturing Of Printed Circuit Boards (AREA)
- Manufacturing Of Printed Wiring (AREA)
Abstract
Description
まずドライフィルムレジストが保護層、例えば、ポリエチレンフィルムを有する場合には、感光性樹脂層からこれを剥離する。次いでラミネーターを用いて基板、例えば、銅張積層板の上に、該基板、感光性樹脂層、支持層の順序になるように感光性樹脂層及び支持層を積層する。次いで配線パターンを有するフォトマスクを介して、該感光性樹脂層を超高圧水銀灯が発するi線(365nm)を含む紫外線で露光することによって、露光部分を重合硬化させる。次いで支持層、例えばポリエチレンテレフタレートを剥離する。次いで、現像液、例えば、弱アルカリ性を有する水溶液により感光性樹脂層の未露光部分を溶解又は分散除去して、基板上にレジストパターンを形成する。
エッチングにより金属部分を除去する方法では、基板の貫通孔(スルーホール)や層間接続のためのビアホールに対して、硬化レジスト膜で覆うことにより孔内の金属がエッチングされないようにする。この方法はテンティング工法と呼ばれる。テンティング工法では、該硬化レジスト膜が、エッチングにより破れないという性質、すなわち、テント性に優れることが求められる。エッチング工程には、例えば、塩化第二銅、塩化第二鉄、銅アンモニア錯体溶液が用いられる。
解像性を高める方法としてはドライフィルムレジストを薄くすることで、簡略的に高めることが出来る反面、現像工程、エッチング工程のスプレーによるフィルムの物理的外力に対する抗力が弱くなることで、現像工程、エッチング工程で硬化レジスト膜が、スルーホール、ビアホールを保護することができなくなる(テント性に優れない)という問題がある。
また、これら多くの(メタ)アクリレート基を有する光重合性不飽和化合物を感光性樹脂組成物中に多量に含む場合には、感光性樹脂層の厚さが薄くなると支持層が意図せずに容易に剥がれるという問題もある。
したがって、感光層の厚さが薄い積層体においても、テント性が良好であり、かつ、支持層が意図せずに剥がれないことが求められていた。
すなわち、本発明は以下の通りのものである。
(a)アルカリ可溶性樹脂20~90質量%、
(b)光重合可能な不飽和二重結合を有する化合物5~75質量%、
(c)光重合開始剤0.1~20質量%、
を含む感光性樹脂組成物であって、前記(b)光重合可能な不飽和二重結合を有する化合物として、下記一般式(I):
<感光性樹脂組成物>
以下の:
(a)アルカリ可溶性樹脂20~90質量%、
(b)光重合可能な不飽和二重結合を有する化合物5~75質量%、
(c)光重合開始剤0.1~20質量%、
を含む感光性樹脂組成物であって、前記(b)光重合可能な不飽和二重結合を有する化合物として、下記一般式(I):
感光性樹脂組成物における各成分の配合量について記載する場合、各成分の配合量は、感光性樹脂組成物中の固形分全体を基準とした場合の質量%で記載される。
アルカリ可溶性樹脂とは、カルボキシル基を含有したビニル系樹脂のことであり、例えば、(メタ)アクリル酸、(メタ)アクリル酸エステル、(メタ)アクリロニトリル、(メタ)アクリルアミド等の共重合体である。
(a)アルカリ可溶性樹脂は、カルボキシル基を含有し、酸当量が100~600であることが好ましい。酸当量とは、その中に1当量のカルボキシル基を有するアルカリ可溶性樹脂の質量を言う。酸当量は、より好ましくは250以上450以下である。酸当量は、現像耐性が向上し、解像度及び密着性が向上する点から、100以上が好ましく、現像性及び剥離性が向上する点から600以下が好ましい。酸当量の測定は、平沼産業(株)製平沼自動滴定装置(COM-555)を使用し、0.1mol/Lの水酸化ナトリウムを用いて電位差滴定法により行われる。
第一の単量体は、分子中に重合性不飽和基を一個有するカルボン酸又は酸無水物である。例えば、(メタ)アクリル酸、フマル酸、ケイ皮酸、クロトン酸、イタコン酸、マレイン酸無水物、及びマレイン酸半エステルが挙げられる。中でも、特に(メタ)アクリル酸が好ましい。ここで、(メタ)アクリルとは、アクリル及び/又はメタクリルを示す。以下同様である。
(a)アルカリ可溶性高分子の、感光性樹脂組成物の総和に対する割合は、20~90質量%の範囲であり、好ましくは40~60質量%である。露光、現像によって形成されるレジストパターンが、レジストとしての特性、例えば、テンティング、エッチング及び各種めっき工程において十分な耐性を有するという観点から20質量%以上90質量%以下が好ましい。
光重合可能な不飽和二重結合を有する化合物とは、分子内に少なくとも1つのエチレン性不飽和結合を有する化合物である。
そして、感光性樹脂組成物中に、(b)光重合可能な不飽和二重結合を有する化合物として、下記一般式(I):
上記一般式(I)で表される化合物からなる群より選ばれる少なくとも一種の化合物の、感光性樹脂組成物の全量に対する含有量は、5~25質量%が好ましい。当該含有量は、テント性の観点から、5質量%以上が好ましく、解像性の観点から25質量%以下が好ましい。
上記一般式(II)で表される化合物からなる群より選ばれる少なくとも一種の化合物の、感光性樹脂組成物の全量に対する含有量は、10~40質量%が好ましい。当該含有量は、テント性の観点から、10質量%以上が好ましく、タック性の観点から40質量%以下が好ましい。
感光性樹脂組成物には、(c)光重合開始剤として、一般に知られているものが使用できる。感光性樹脂組成物に含有される(c)光重合開始剤の含有量は、0.1~20質量%の範囲であり、より好ましい範囲は0.5~10質量%である。当該含有量は、十分な感度を得るという観点から、0.1質量%以上が好ましく、また、レジスト底面にまで光を充分に透過させ、良好な高解像性を得るという観点から、20質量%以下が好ましい。
感光性樹脂組成物の取扱い性を向上させるために、感光性樹脂組成物は、(d)その他の成分として、ロイコ染料、又はフルオラン染料や着色物質を含有してもよい。
ロイコ染料としては、トリス(4-ジメチルアミノフェニル)メタン[ロイコクリスタルバイオレット]、ビス(4-ジメチルアミノフェニル)フェニルメタン[ロイコマラカイトグリーン]が挙げられる。中でも、コントラストが良好となる観点から、ロイコ染料としては、ロイコクリスタルバイオレットを用いることが好ましい。ロイコ染料を含有する場合の含有量は、感光性樹脂組成物中に0.1~10質量%含むことが好ましい。当該含有量は、コントラストの発現という観点から、0.1質量%以上が好ましく、また、保存安定性を維持という観点から、10質量%以下が好ましい。
着色物質としては、例えば、フクシン、フタロシアニングリーン、オーラミン塩基、パラマジエンタ、クリスタルバイオレット、メチルオレンジ、ナイルブルー2B、ビクトリアブルー、マラカイトグリーン(保土ヶ谷化学(株)製 アイゼン(登録商標) MALACHITE GREEN)、ベイシックブルー20、ダイアモンドグリーン(保土ヶ谷化学(株)製 アイゼン(登録商標) DIAMOND GREEN GH)が挙げられる。着色物質を含有する場合の添加量は、感光性樹脂組成物中に0.001~1質量%含むことが好ましい。0.001質量%以上の含有量は、取扱い性向上という観点から、そして1質量%以下の含有量は、保存安定性を維持するという観点から、好ましい。
感光性樹脂組成物には、感度の観点から、N-アリール-α-アミノ酸化合物を含有してもよい。N-アリール-α-アミノ酸化合物としては、N-フェニルグリシンが好ましい。N-アリール-α-アミノ酸化合物を含有する場合の含有量は、0.01質量%以上10質量%以下が好ましい。
ラジカル重合禁止剤としては、例えば、p-メトキシフェノール、ハイドロキノン、ピロガロール、ナフチルアミン、tert-ブチルカテコール、塩化第一銅、2,6-ジ-tert-ブチル-p-クレゾール、2,2’-メチレンビス(4-メチル-6-tert-ブチルフェノール)、2,2’-メチレンビス(4-エチル-6-tert-ブチルフェノール)、ニトロソフェニルヒドロキシアミンアルミニウム塩、ジフェニルニトロソアミンなどが挙げられる。
乾燥後の感光性樹脂層の厚さは、1~100μmであることが好ましく、より好ましくは、2~50μm、さらに好ましくは、3~15μmである。当該厚さは、テント性の観点から、3μm以上が好ましく、解像性の観点から、15μm以下が好ましい。
次いで必要により、感光性樹脂層上に保護層をラミネートすることにより感光性樹脂積層体を作製することができる。
感光性樹脂組成物を溶解する溶剤としては、メチルエチルケトン(MEK)に代表されるケトン類、メタノール、エタノール又はイソプロパノールに代表されるアルコール類などが挙げられる。当該溶剤は、支持層上に塗布する感光性樹脂組成物の溶液の粘度が25℃で500~4000mPa・sとなるように、感光性樹脂組成物に添加することが好ましい。
感光性樹脂積層体を用いたレジストパターンは、ラミネートするラミネート工程、活性光を露光する露光工程、及び未露光部を除去する現像工程を含む工程によって形成することができる。以下、具体的な方法の一例を示す。
基板としては、プリント配線板製造のためには銅張積層板が、また凹凸基材の製造のためにはガラス基材、例えば、プラズマディスプレイパネル用基材や表面電解ディスプレイ基材、有機EL封止キャップ用や、貫通孔を形成したシリコンウエハー、セラミック基材などが挙げられる。プラズマディスプレイ用基材とは、ガラス上に電極を形成後、誘電体層を塗布し、次いで隔壁用ガラスペーストを塗布し、隔壁用ガラスペースト部分にサンドブラスト加工を施し隔壁を形成した基材である。これらのガラス基材にサンドブラスト加工を施したものが、凹凸基材となる。
また、露光工程において、直接描画露光方法を用いてもよい。直接描画露光とはフォトマスクを使用せず、基板上に直接描画して露光する方式である。光源としては、例えば、波長350~410nmの半導体レーザーや超高圧水銀灯が用いられる。描画パターンは、コンピューターによって制御され、この場合の露光量は光源照度と基板の移動速度によって決定される。
を混入させてもよい。
プリント配線板は、基板として銅張積層板やフレキシブル基板を用いた上述のレジストパターン形成方法に続いて、以下の工程を経ることで得られうる。
まず、現像により露出した基板の銅面をエッチング法又はめっき法といった既知の方法を用いて導体パターンを製造する。
その後、レジストパターンを現像液よりも強いアルカリ性を有する水溶液により基板から剥離して所望のプリント配線板を得る。剥離用のアルカリ水溶液(以下、「剥離液」ともいう。)についても特に制限はないが、濃度約2~5質量%、温度約40~70℃のNaOH、KOHの水溶液が一般に用いられる。剥離液に、少量の水溶性溶媒を加えることもできる。
リードフレームは、基板として金属板、例えば、銅、銅合金、鉄系合金を用いた上述のレジストパターンの形成方法に続いて、以下の工程を経ることで得られうる。
まず、現像により露出した基板をエッチングして導体パターンを形成する。その後、レジストパターンを上述のプリント配線板の製造方法と同様の方法で剥離して、所望のリードフレームを得る。
半導体パッケージは、基板としてLSIとしての回路形成が終了したウェハを用いた上述のレジストパターンの形成方法に続いて、以下の工程を経ることで得られうる。
まず、現像により露出した開口部に、銅やはんだによる柱状のめっきを施して、導体パターンを形成する。その後、レジストパターンを上述のプリント配線板の製造方法と同様の方法で剥離し、更に、柱状めっき以外の部分の薄い金属層をエッチングにより除去することで所望の半導体パッケージを得る。
サンドブラスト加工が可能な基材、例えば、ガラス基材、ガラスリブペーストを塗布したガラス基材、セラミック基材、ステンレスなどの金属基材、シリコンウエハー、サファイアなどの鉱石、合成樹脂層などの有機基材上に、上述の<レジストパターン形成方法>と同様な方法で、感光性樹脂積層体をラミネートし、露光、現像を施す。その後、形成されたレジストパターン上からブラスト材を吹き付けて目的の深さに切削するサンドブラスト加工工程、基材上に残存した樹脂部分をアルカリ剥離液等で基材から除去する剥離工程を経ることにより、基材上に微細なパターンが形成される。上前記サンドブラスト加工工程に用いるブラスト材は公知のものを用いることができ、例えば、SiC,SiO2、Al2O3、CaCO3、ZrO2、ガラス、ステンレス等の2~100μm程度の微粒子が用いられる。
実施例及び比較例の評価用サンプルの作製方法並びに得られたサンプルについての評価方法及び評価結果は以下のとおりであった。
1)評価用サンプルの作製
実施例及び比較例における感光性樹脂積層体は以下のようにして作製した。
<感光性樹脂積層体の作製>
以下の表1に示す組成物の溶液を、固形分量が50質量%になるように調整し、よく撹拌、混合し、支持フィルムとして16μm厚のポリエチレンテレフタレートフィルム(三菱化学社製R340-G16)上に、表1に示す感光性樹脂組成物をブレードコーターを用いて均一に塗布して95℃で1分乾燥した。乾燥後の感光性樹脂層の膜厚は10μmであった。次いで、感光性樹脂層上の表面上に、保護層として35μm厚のポリエチレンフィルム(タマポリ社製GF-858)を張り合わせて感光性樹脂積層体を得た。
絶縁樹脂に35μm銅箔を積層した0.4mm厚の銅張積層板を用いて評価した。なお、以下の説明において、その他の基板を用いた場合にのみその旨を記載した。
<ラミネート>
感光性樹脂積層体の保護層を剥がしながらホットロールラミネーター(旭化成エンジニアリング(株)社製、AL-700)により、ロール温度105℃でラミネートした。エアー圧力は0.35MPaとし、ラミネート速度は1.5m/分とした。
直接描画露光機(オルボテック社製、Paragon9000)により8Wで16mJ/cm2の露光量で感光性樹脂層を露光した。
30℃の1.0質量%Na2CO3水溶液を所定の時間スプレーして感光性樹脂層の未露光部分を溶解除去した。実際の現像時間は24秒で現像し、その後、水洗時間は36秒で水洗した。
上記1)評価用サンプルの作成において説明した方法に加え、それぞれの性能については以下の方法により評価した。
<テント性>
1.0mm径のスルーホール穴が2500個作製された500mm×500mmの0.2mm厚みの銅張積層板に上記方法により両面にラミネートした基板を、上記露光方法により全面に直描露光し硬化膜を得、これを上記現像方法により現像した。現像後に硬化レジスト膜の破れている個数をカウントし、下記のようにランク分けした:
A:破れている個数が25個以下
B:破れている個数が25個超、75個以下
C:破れている個数が75個超、150個以下
D:破れている個数が150個超。
感光性樹脂積層体の感光性樹脂層を上記方法により片面にラミネートした基板を作製し、これを24時間23℃、50%相対湿度下で放置した後、1インチ幅の支持層(PET)を180°引き剥がし、その強度をテンシロンRTM-500(東洋精機製)で測定し、下記のようにランク分けをした:
A:引き剥がし強度の極大平均値が3gf以上
B:引き剥がし強度の極大平均値が3gf未満。
実施例および比較例の評価結果を以下の表1に示す。表1におけるB-1~B-3の質量部は固形分の質量部であり、溶剤を含まない。B-1~B-3の固形分濃度50質量%のメチルエチルケトン溶液を予め作成し、表1の固形分となるように各B-1~B-3の溶液を配合することにより、感光性樹脂組成物の上記各成分の含有量を調整した。
B-1:メタクリル酸25質量%、メタクリル酸メチル65質量%、ブチルアクリレート10質量%の三元共重合体(重量平均分子量100,000、酸当量344)
B-2:メタクリル酸25質量%、メタクリル酸メチル65質量%、ブチルアクリレート10質量%の三元共重合体(重量平均分子量200,000、酸当量344)
B-3:メタクリル酸25質量%、メタクリル酸メチル50質量%、スチレン25質量%の三元共重合体(重量平均分子量50,000、酸当量344)
M-2:ペンタエリスリトールの4つの末端にそれぞれ1モルのエチレンオキシドを付加したテトラアクリレート(サートマージャパン(株)社製SR-494)
M-3:ペンタエリスリトールの4つの末端に合計で28モルのエチレンオキシドと8モルのプロピレンオキシドを付加したテトラアクリレート
M-4:平均12モルのプロピレンオキサイドを付加したポリプロピレングリコールにエチレンオキサイドをさらに両端にそれぞれ平均3モルずつ付加したポリアルキレングリコールのジメタクリレート
M-5:ビスフェノールAの両端にそれぞれ平均5モルずつのエチレンオキサイドを付加したポリエチレングリコールのジメタクリレート(日立化成工業(株)製FA-321M)
I-2:N-フェニルグリシン
I-3:2-(o-クロロフェニル)-4、5-ジフェニルイミダゾール二量体
I-4:1-フェニル-3-(4-tert-ブチル-スチリル)-5-(4-tert-ブチル-フェニル)-ピラゾリン
D-1:ダイアモンドグリーン
D-2:ロイコクリスタルバイオレット
F-1:メチルエチルケトン
Claims (10)
- 以下の:
(a)アルカリ可溶性樹脂20~90質量%、
(b)光重合可能な不飽和二重結合を有する化合物5~75質量%、
(c)光重合開始剤0.1~20質量%、
を含む感光性樹脂組成物であって、前記(b)光重合可能な不飽和二重結合を有する化合物として、下記一般式(I):
- 請求項1又は2に記載の感光性樹脂組成物からなる感光性樹脂層と支持層を含む感光性樹脂積層体。
- 基板上に、請求項3に記載の感光性樹脂積層体の感光性樹脂層をラミネートするラミネート工程、活性光を露光する露光工程、及び未露光部を除去する現像工程を含むレジストパターンの形成方法。
- 前記露光工程において直接描画して露光する、請求項4に記載のレジストパターンの形成方法。
- 請求項4又は5に記載のレジストパターンの形成方法において、基板として銅張積層板を用いてレジストパターンを形成した基板を、エッチングするか又はめっきする工程を含む、導体パターンの製造方法。
- 請求項4又は5に記載のレジストパターンの形成方法において、基板として金属被覆絶縁板を用いてレジストパターンを形成した基板を、エッチング又はめっきし、さらにレジストパターンを剥離することを特徴とするプリント配線板の製造方法。
- 請求項4又は5に記載のレジストパターンの形成方法において、基板として金属板を用いてレジストパターンを形成した基板を、エッチングし、そしてレジストパターンを剥離することを特徴とするリードフレームの製造方法。
- 請求項4又は5に記載のレジストパターンの形成方法において、基板としてLSIとしての回路形成が終了したウェハを用いてレジストパターンを形成した基板を、めっきし、そしてレジストパターンを剥離することを特徴とする半導体パッケージの製造方法。
- 請求項4又は5に記載のレジストパターンの形成方法において、基板としてサンドブラスト加工が可能な基材を用いてレジストパターンを形成した基板を、サンドブラスト工法によって加工し、そしてレジストパターンを剥離することを特徴とする凹凸パターンを有する基材の製造方法。
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CN2009801132293A CN102007452B (zh) | 2008-04-14 | 2009-04-07 | 感光性树脂组合物及其层压体 |
KR1020107018383A KR101294585B1 (ko) | 2008-04-14 | 2009-04-07 | 감광성 수지 조성물 및 그 적층체 |
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Cited By (6)
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JP2011227309A (ja) * | 2010-04-20 | 2011-11-10 | Asahi Kasei E-Materials Corp | 感光性樹脂組成物及びその積層体 |
JP2012215787A (ja) * | 2011-04-01 | 2012-11-08 | Hitachi Chem Co Ltd | 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、並びに、プリント配線板及びその製造方法 |
JP2013117581A (ja) * | 2011-12-01 | 2013-06-13 | Asahi Kasei E-Materials Corp | 感光性樹脂組成物 |
JP2014081440A (ja) * | 2012-10-15 | 2014-05-08 | Asahi Kasei E-Materials Corp | 感光性樹脂組成物 |
JP2019210345A (ja) * | 2018-06-01 | 2019-12-12 | 上海富吉医療器械有限公司Shanghai Chartwell Medical Instrument Co., Ltd. | ポリマー材料および眼内レンズ |
WO2020027024A1 (ja) * | 2018-08-02 | 2020-02-06 | 三菱製紙株式会社 | 感光性樹脂組成物、めっき方法及び金属パターンの製造方法 |
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JP5707420B2 (ja) * | 2010-12-24 | 2015-04-30 | 旭化成イーマテリアルズ株式会社 | 感光性樹脂組成物 |
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JP2012215787A (ja) * | 2011-04-01 | 2012-11-08 | Hitachi Chem Co Ltd | 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、並びに、プリント配線板及びその製造方法 |
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JP2014081440A (ja) * | 2012-10-15 | 2014-05-08 | Asahi Kasei E-Materials Corp | 感光性樹脂組成物 |
JP2019210345A (ja) * | 2018-06-01 | 2019-12-12 | 上海富吉医療器械有限公司Shanghai Chartwell Medical Instrument Co., Ltd. | ポリマー材料および眼内レンズ |
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WO2020027024A1 (ja) * | 2018-08-02 | 2020-02-06 | 三菱製紙株式会社 | 感光性樹脂組成物、めっき方法及び金属パターンの製造方法 |
JPWO2020027024A1 (ja) * | 2018-08-02 | 2021-08-02 | 三菱製紙株式会社 | 感光性樹脂組成物、めっき方法及び金属パターンの製造方法 |
JP2022169628A (ja) * | 2018-08-02 | 2022-11-09 | 三菱製紙株式会社 | 感光性樹脂組成物、めっき方法及び金属パターンの製造方法 |
JP7268028B2 (ja) | 2018-08-02 | 2023-05-02 | 三菱製紙株式会社 | 感光性樹脂組成物、めっき方法及び金属パターンの製造方法 |
JP7392061B2 (ja) | 2018-08-02 | 2023-12-05 | 三菱製紙株式会社 | 感光性樹脂組成物、めっき方法及び金属パターンの製造方法 |
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TW201001065A (en) | 2010-01-01 |
TWI396045B (zh) | 2013-05-11 |
CN102007452A (zh) | 2011-04-06 |
KR20100125254A (ko) | 2010-11-30 |
KR101294585B1 (ko) | 2013-08-07 |
JP5167347B2 (ja) | 2013-03-21 |
JPWO2009128369A1 (ja) | 2011-08-04 |
CN102007452B (zh) | 2012-10-31 |
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