WO2018159629A1 - 感光性樹脂組成物 - Google Patents
感光性樹脂組成物 Download PDFInfo
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- WO2018159629A1 WO2018159629A1 PCT/JP2018/007320 JP2018007320W WO2018159629A1 WO 2018159629 A1 WO2018159629 A1 WO 2018159629A1 JP 2018007320 W JP2018007320 W JP 2018007320W WO 2018159629 A1 WO2018159629 A1 WO 2018159629A1
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- photosensitive resin
- resin composition
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- compound
- laser beam
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C13/00—Cyclic hydrocarbons containing rings other than, or in addition to, six-membered aromatic rings
- C07C13/28—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof
- C07C13/32—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof with condensed rings
- C07C13/54—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof with condensed rings with three condensed rings
- C07C13/573—Polycyclic hydrocarbons or acyclic hydrocarbon derivatives thereof with condensed rings with three condensed rings with three six-membered rings
- C07C13/58—Completely or partially hydrogenated anthracenes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
- C07C15/40—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts substituted by unsaturated carbon radicals
- C07C15/42—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts substituted by unsaturated carbon radicals monocyclic
- C07C15/44—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts substituted by unsaturated carbon radicals monocyclic the hydrocarbon substituent containing a carbon-to-carbon double bond
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C25/00—Compounds containing at least one halogen atom bound to a six-membered aromatic ring
- C07C25/18—Polycyclic aromatic halogenated hydrocarbons
- C07C25/22—Polycyclic aromatic halogenated hydrocarbons with condensed rings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C43/00—Ethers; Compounds having groups, groups or groups
- C07C43/02—Ethers
- C07C43/20—Ethers having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
- C08F2/50—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
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- G—PHYSICS
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- 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
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- 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
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- 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
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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
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
- G03F7/2002—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image
- G03F7/2004—Exposure; Apparatus therefor with visible light or UV light, through an original having an opaque pattern on a transparent support, e.g. film printing, projection printing; by reflection of visible or UV light from an original such as a printed image characterised by the use of a particular light source, e.g. fluorescent lamps or deep UV light
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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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70008—Production of exposure light, i.e. light sources
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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
- G03F7/70—Microphotolithographic exposure; Apparatus therefor
- G03F7/70483—Information management; Active and passive control; Testing; Wafer monitoring, e.g. pattern monitoring
- G03F7/7055—Exposure light control in all parts of the microlithographic apparatus, e.g. pulse length control or light interruption
- G03F7/70575—Wavelength control, e.g. control of bandwidth, multiple wavelength, selection of wavelength or matching of optical components to wavelength
Definitions
- the present invention relates to a photosensitive resin composition and the like.
- printed wiring boards are generally manufactured by a photolithography method.
- the photolithography method first, pattern exposure is performed on the photosensitive resin composition layer laminated on the substrate.
- the exposed portion of the photosensitive resin composition is polymerized and cured (in the case of a negative type) or solubilized in a developer (in the case of a positive type).
- the unexposed portion (in the case of negative type) or the exposed portion (in the case of positive type) is removed with a developer to form a resist pattern on the substrate.
- the resist pattern is peeled off from the substrate. Through these steps, a conductor pattern is formed on the substrate.
- a photosensitive resin composition is applied onto a substrate
- a solution of the photosensitive resin composition is applied to the substrate and dried, or a support or a layer comprising the photosensitive resin composition (Hereinafter also referred to as “photosensitive resin layer”)
- a method of laminating a photosensitive resin laminate (hereinafter also referred to as “dry film resist”) obtained by sequentially laminating a protective layer, if desired, on a substrate. Either is used. The latter is frequently used in the production of printed wiring boards.
- the sensitivity, resolution, and adhesion of the cured resist are greatly affected by the absorbance of the dry film resist at the exposure wavelength.
- the absorbance is high, the sensitivity of the dry film resist is high, and the curing degree is high even at a low exposure amount.
- the absorbance is low, the amount of light reaching the bottom of the dry film resist increases, so that the polymerization reaction tends to proceed to the bottom of the cured resist and the adhesion tends to be improved.
- the exposure light source has a single wavelength
- a dry film resist suitable for each exposure wavelength is designed by appropriately adjusting the absorbance of the dry film resist at that wavelength.
- two-wavelength exposure In recent years, an exposure machine equipped with two types of lasers has been applied in order to further refine the resist pattern.
- the process of exposing using two types of lasers is called two-wavelength exposure.
- the two-wavelength exposure by combining a wavelength having a high absorbance and a wavelength having a low absorbance, it is possible to achieve both the advantages of the case where the absorbance is low and the case where the absorbance is high. For this reason, two-wavelength exposure is expected in recent years as a new exposure method.
- Patent Document 1 proposes a photosensitive resin composition that is exposed at 390 to 405 nm using a specific sensitizer, and Patent Document 2 discloses light having a peak in the range of 350 to 440 nm.
- a photosensitive resin composition to be exposed is described.
- Patent Document 3 describes a photosensitive resin composition containing a (meth) acrylate compound having a skeleton derived from pentaerythritol for the purpose of improving the adhesion and resolution of a resist pattern.
- No. 4 also proposes a photosensitive resin composition containing a (meth) acrylate compound having a skeleton derived from dipentaerythritol for the purpose of improving the adhesion and resolution of the resist pattern.
- Patent Documents 5 and 6 various photosensitive resin compositions have been proposed in order to improve the sensitivity, resolution and adhesion properties of the dry film resist.
- Patent Document 5 a photosensitive resin composition containing a large amount of a copolymer component derived from styrene is studied from the viewpoints of a sedge shape of a resist pattern, resolution, and a remaining film ratio.
- Patent Document 6 the photosensitive resin composition suitable for laser direct imaging is examined.
- Patent Document 1 has room for improvement in resolution and adhesion when two-wavelength exposure is applied.
- Patent Document 2 no consideration has been given to two-wavelength exposure.
- the photosensitive resin compositions described in Patent Documents 3 to 6 have room for further improvement in terms of applicability to two-wavelength exposure, and no consideration or suggestion regarding two-wavelength exposure has been made.
- the present invention has been made with respect to the background art described above, and the problem to be solved by the present invention is used for two-wavelength exposure, and has excellent exposure sensitivity, adhesion and resolution. It is providing the photosensitive resin composition to give.
- a photosensitive resin composition for obtaining a resin cured product by exposure with a first laser beam having a central wavelength of less than 390 nm and a second laser beam having a central wavelength of 390 nm or more
- the photosensitive resin composition is (A) an alkali-soluble polymer, (B) a compound having an ethylenic double bond, and (C) a photopolymerization initiator,
- the photosensitive resin composition has photosensitivity to both the first laser beam and the second laser beam
- the photopolymerization initiator (C) is a photosensitive resin composition containing an anthracene and / or an anthracene derivative.
- the copolymerization ratio of the aromatic group-containing comonomer in the (A) alkali-soluble polymer is 40% by mass or more
- the photosensitive resin composition of the said aspect 1 which contains 5 mass% or more with respect to.
- the photosensitive resin composition according to the above aspect 1 or 2 wherein a copolymerization ratio of styrene in the (A) alkali-soluble polymer is 30% by mass or more.
- the anthracene derivative is an alkoxy group having 1 to 40 carbon atoms which may have a substituent and / or 6 to 6 carbon atoms which may have a substituent at the 9th and / or 10th position. 4.
- the anthracene derivative is an optionally substituted alkoxy group having 1 to 40 carbon atoms and / or an optionally substituted aryl group having 6 to 40 carbon atoms at the 9,10 positions. 4.
- the compound (B) having an ethylenic double bond includes an alkylene oxide structure having 3 or more carbon atoms.
- Composition. [13] The method includes exposing the photosensitive resin composition according to any one of the above aspects 1 to 12 with a first laser beam having a center wavelength of less than 390 nm and a second laser beam having a center wavelength of 390 nm or more. A method for producing a cured photosensitive resin.
- An exposure process A development step of developing the exposed photosensitive resin composition.
- Method. A method for manufacturing a circuit board, comprising forming a circuit board by etching or plating a substrate having a resist pattern manufactured by the method according to the aspect 15 or 16.
- the photopolymerization initiator (C) is a photosensitive resin composition containing an anthracene derivative having a halogen atom.
- the (C) photopolymerization initiator includes a compound in which the 9-position and / or 10-position alkoxy group of 9,10-dialkoxyanthracene is modified with one or more halogens.
- the photosensitive resin composition as described.
- a photosensitive resin composition for obtaining a resin cured product by exposure with a first laser beam having a central wavelength of less than 390 nm and a second laser beam having a central wavelength of 390 nm or more
- the photosensitive resin composition includes (A) an alkali-soluble polymer, (B) a compound having an ethylenic double bond, and (C) a photopolymerization initiator, (A) The photosensitive resin composition whose copolymerization ratio of the aromatic group containing comonomer in said (A) alkali-soluble polymer is 40 mass% or more.
- a photosensitive resin composition comprising (B) a compound having a bifunctional ethylenic double bond and having an ethylene oxide structure of 1 mol or more and 15 mol or less as the compound having an ethylenic double bond.
- the photosensitive resin composition according to the above aspect 23 which is contained in an amount of 5% by mass or more based on the total solid content.
- the present invention it is possible to provide a photosensitive resin composition that is used for two-wavelength exposure and gives excellent exposure sensitivity, adhesion, and resolution.
- the photosensitive resin composition includes (A) an alkali-soluble polymer, (B) a compound having an ethylenic double bond (that is, an ethylenically unsaturated bond), and (C) a photopolymerization initiator. .
- the photopolymerization initiator contains anthracene and / or an anthracene derivative.
- the photosensitive resin composition may further contain other components such as (D) an additive.
- the photosensitive resin composition can form the photosensitive resin layer by applying to arbitrary supports.
- the photosensitive resin composition of this embodiment has photosensitivity to both first active light having a central wavelength of less than 390 nm and second active light having a central wavelength of 390 nm or more. Therefore, the photosensitive resin composition of this embodiment has a specific composition suitable for obtaining a resin cured product by exposure with the first active light and the second active light.
- the central wavelength of the first active light is preferably 350 to 380 nm, more preferably 355 to 375 nm, and particularly preferably 375 nm.
- the central wavelength of the second active light is preferably 400 to 410 nm, more preferably 402 to 408 nm, and particularly preferably 405 nm (h line).
- each component contained in the photosensitive resin composition will be described.
- Alkali-soluble polymer (A) The alkali-soluble polymer is a polymer that can be dissolved in an alkaline substance. (A) The alkali-soluble polymer preferably has a carboxyl group from the viewpoint of alkali developability, and more preferably a copolymer containing a carboxyl group-containing monomer as a copolymerization component. (A) The alkali-soluble polymer may be thermoplastic.
- the photosensitive resin composition preferably contains a copolymer having an aromatic group as the (A) alkali-soluble polymer from the viewpoint of the high resolution of the resist pattern and the sword shape. It is particularly preferable that the photosensitive resin composition includes (A) a copolymer having an aromatic group in the side chain as the alkali-soluble polymer. Examples of such an aromatic group include a substituted or unsubstituted phenyl group and a substituted or unsubstituted aralkyl group.
- the proportion of the copolymer having an aromatic group in the component (A) is preferably 30% by mass or more, more preferably 40% by mass or more, more preferably 50% by mass or more, more preferably 70% by mass or more, and further Preferably it is 80 mass% or more.
- the proportion may be 100% by mass, but from the viewpoint of maintaining good alkali solubility, it is preferably 95% by mass or less, more preferably 90% by mass or less, and still more preferably 85% by mass.
- the copolymerization ratio of the comonomer having an aromatic group in the alkali-soluble polymer (A) is preferably 40% by mass or more, preferably 50% by mass or more, preferably Is 60% by mass or more, preferably 70% by mass or more, and preferably 80% by mass or more.
- the upper limit of the copolymerization ratio is not particularly limited, but is preferably 95% by mass or less, more preferably 90% by mass or less from the viewpoint of maintaining good alkali solubility.
- Examples of the comonomer having an aromatic group include a monomer having an aralkyl group, styrene, and a polymerizable styrene derivative (for example, methylstyrene, vinyltoluene, tert-butoxystyrene, acetoxystyrene, 4-vinylbenzoic acid, Styrene dimer, styrene trimer, etc.).
- a monomer having an aralkyl group and styrene are preferable, and a monomer having an aralkyl group is more preferable.
- the copolymerization ratio of styrene in the alkali-soluble polymer (A) is preferably 30% by mass or more, and more preferably from the viewpoint of the high resolution of the resist pattern and the sword shape. Is 50% by mass or more, and from the viewpoint of maintaining good alkali solubility, it is preferably 80% by mass or less, more preferably 70% by mass or less, and still more preferably 60% by mass or less.
- aralkyl group examples include a substituted or unsubstituted benzyl group, a substituted or unsubstituted phenylalkyl group (excluding a benzyl group), and the like, and a substituted or unsubstituted benzyl group is preferable.
- Examples of the comonomer having a benzyl group include (meth) acrylates having a benzyl group, such as benzyl (meth) acrylate, chlorobenzyl (meth) acrylate, etc .; vinyl monomers having a benzyl group, such as vinylbenzyl chloride, vinylbenzyl alcohol, etc. Is mentioned. Of these, benzyl (meth) acrylate is preferred.
- Examples of the comonomer having a phenylalkyl group include phenylethyl (meth) acrylate.
- the copolymer having an aromatic group (preferably benzyl group) in the side chain comprises: (i) a monomer having an aromatic group; and (ii) at least one kind of a first monomer described below and / or a second monomer described below. It is preferable to obtain by polymerizing at least one of the above.
- the (A) alkali-soluble polymer other than the copolymer having an aromatic group in the side chain is preferably obtained by polymerizing at least one of the first monomers described later, and is preferably at least one of the first monomers described later. More preferably, it is obtained by copolymerizing the seed and at least one of the second monomers described below.
- the first monomer is a monomer having a carboxyl group in the molecule.
- the first monomer include (meth) acrylic acid, fumaric acid, cinnamic acid, crotonic acid, itaconic acid, 4-vinylbenzoic acid, maleic anhydride, maleic acid half ester, and the like.
- (meth) acrylic acid is preferable.
- (meth) acrylic acid means acrylic acid or methacrylic acid
- (meth) acryloyl group” means acryloyl group or methacryloyl group
- the copolymerization ratio of the first monomer is preferably 10 to 50% by mass based on the total mass of all the monomer components of the polymer obtained by polymerizing at least one of the first monomers.
- the copolymerization ratio is preferably 10% by mass or more from the viewpoint of developing good developability and controlling the edge fuse property.
- the copolymerization ratio is preferably 50% by mass or less, more preferably 30% by mass or less, and still more preferably from the viewpoint of high resolution and sword shape of the resist pattern, and further from the viewpoint of chemical resistance of the resist pattern. 25% by mass or less, particularly preferably 22% by mass or less, and most preferably 20% by mass or less.
- the second monomer is non-acidic and has at least one polymerizable unsaturated group in the molecule.
- the second monomer include methyl (meth) acrylate, ethyl (meth) acrylate, n-propyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, isobutyl (meth) acrylate, tert -(Meth) acrylates such as butyl (meth) acrylate, 2-hydroxyethyl (meth) acrylate, 2-hydroxypropyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate; And vinyl alcohol esters; and (meth) acrylonitrile.
- the alkali-soluble polymer can be prepared by polymerizing one or more monomers described above by a known polymerization method, preferably addition polymerization, more preferably radical polymerization. It is preferable that the monomer contains a monomer having an aralkyl group and / or styrene from the viewpoint of chemical resistance, adhesion, high resolution, or sword shape of the resist pattern.
- a copolymer composed of methacrylic acid, benzyl methacrylate and styrene a copolymer composed of methacrylic acid, methyl methacrylate, benzyl methacrylate and styrene are particularly preferable.
- the glass transition temperature Tg of the whole mixture is preferably 110 ° C. or lower, 107 ° C. or lower, 105 ° C. or lower, 100 ° C. or lower, 95 More preferably, it is not higher than 90 ° C, not higher than 90 ° C, or not higher than 80 ° C.
- the lower limit of the glass transition temperature (Tg) of the alkali-soluble polymer is not limited, it is preferably 30 ° C. or higher, more preferably 50 ° C. or higher, and still more preferably 60 ° C. from the viewpoint of controlling edge fuse properties. That's it.
- the acid equivalent of the alkali-soluble polymer (when the component (A) contains a plurality of types of copolymers, the acid equivalent of the entire mixture) is the development resistance of the photosensitive resin layer and the resist pattern solution. It is preferably 100 or more from the viewpoint of image properties and adhesion, and is preferably 600 or less from the viewpoint of developability and peelability of the photosensitive resin layer.
- the acid equivalent of the alkali-soluble polymer is more preferably from 200 to 500, still more preferably from 250 to 450.
- the weight average molecular weight of the alkali-soluble polymer (when the component (A) includes a plurality of types of copolymers, the weight average molecular weight of the entire mixture) is preferably 5,000 to 500,000. .
- the weight average molecular weight of the alkali-soluble polymer is preferably 5,000 or more from the viewpoint of maintaining the thickness of the dry film resist uniformly and obtaining resistance to the developer, and developability of the dry film resist. Is preferably 500,000 or less from the viewpoint of maintaining the resistance, the high resolution of the resist pattern and the viewpoint of the sword shape, and the chemical resistance of the resist pattern.
- the weight average molecular weight of the (A) alkali-soluble polymer is more preferably 10,000 to 200,000, still more preferably 20,000 to 100,000, and particularly preferably 30,000 to 70,000.
- the degree of dispersion of the molecular weight of the alkali-soluble polymer is preferably 1.0 to 6.0.
- the content of the (A) alkali-soluble polymer in the photosensitive resin composition is based on the total solid content of the photosensitive resin composition (hereinafter, the same applies to each component unless otherwise specified), preferably It is within the range of 10% by mass to 90% by mass, more preferably 20% by mass to 80% by mass, and still more preferably 40% by mass to 60% by mass.
- the content of the alkali-soluble polymer is preferably 10% by mass or more from the viewpoint of maintaining the alkali developability of the photosensitive resin layer, and the resist pattern formed by exposure has performance as a resist material.
- the high resolution of the resist pattern and the sword shape of the resist pattern is preferably 90% by mass or less, and 80% by mass or less. More preferably, it is more preferably 70% by mass or less, and still more preferably 60% by mass or less.
- a compound having an ethylenically unsaturated bond is a compound having polymerizability by having an ethylenically unsaturated group in its structure.
- the compound having an ethylenically unsaturated bond preferably has an alkylene oxide structure having 3 or more carbon atoms.
- the number of carbon atoms in the alkylene oxide structure is more preferably 3-6, and still more preferably 3-4.
- the photosensitive resin composition according to this embodiment is preferably (B) as a compound having an ethylenically unsaturated bond, ( b1) A (meth) acrylate compound having three or more ethylenically unsaturated bonds (that is, trifunctional or higher) is included.
- a (meth) acrylate compound having 4 or more ethylenically unsaturated bonds (that is, 4 or more functional groups) is more preferable, and having 6 or more ethylenically unsaturated bonds (that is, 6 functional groups).
- the above (meth) acrylate compounds are particularly preferred.
- the ethylenically unsaturated bond is more preferably derived from a methacryloyl group.
- Tri (meth) acrylates such as ethoxylated glycerin tri (meth) acrylate, ethoxylated isocyanuric acid tri (meth) acrylate, pentaerythritol tri (meth) acrylate, and trimethylolpropane tri (meth) acrylate (e.g., flexibility,
- Tri (meth) acrylate having an average of 21 mol of ethylene oxide added to trimethylolpropane, and trimethylolpropane having an average of 30 mol of ethylene oxide added to trimethylolpropane (Meth) acrylate) etc .
- Tetra (meth) acrylate such as ditrimethylolpropane tetra (meth) acrylate, pentaerythritol te
- the (meth) acrylate compound having 3 or more ethylenically unsaturated bonds preferably has a weight average molecular weight of 500 or more, more preferably 700 or more, and still more preferably 900 or more, from the viewpoint of suppression of bleeding out. .
- pentaerythritol tetra (meth) acrylate is preferable.
- the pentaerythritol tetra (meth) acrylate is preferably tetra (meth) acrylate in which 1 to 40 moles of alkylene oxide is added to the four terminals of pentaerythritol.
- Tetra (meth) acrylate has the following general formula (I): ⁇ Wherein R 3 to R 6 each independently represents an alkyl group having 1 to 4 carbon atoms, X represents an alkylene group having 2 to 6 carbon atoms, m 1 , m 2 , m 3 and m 4 is each independently an integer of 0 to 40, m 1 + m 2 + m 3 + m 4 is 1 to 40, and when m 1 + m 2 + m 3 + m 4 is 2 or more, a plurality of X in the formulas may be the same or different from each other.
- R 3 to R 6 each independently represents an alkyl group having 1 to 4 carbon atoms
- X represents an alkylene group having 2 to 6 carbon atoms
- m 1 , m 2 , m 3 and m 4 is each independently an integer of 0 to 40
- m 1 + m 2 + m 3 + m 4 is 1 to 40
- the tetramethacrylate compound represented by the general formula (I) has a group R 3 to R 6, thereby providing an H 2 C ⁇ CH—CO—O— moiety. It is considered that the hydrolyzability in the alkaline solution is suppressed as compared with the tetraacrylate having.
- the use of the photosensitive resin composition containing the tetramethacrylate compound represented by the general formula (I) means that the resolution of the resist pattern, specifically the line shape, more specifically the line shape, and the resist It is preferable from the viewpoint of improving adhesion.
- At least one of the groups R 3 to R 6 is preferably a methyl group, and more preferably all of the groups R 3 to R 6 are methyl groups.
- X is preferably —CH 2 —CH 2 — from the viewpoint of obtaining desired resolution, sword shape and remaining film ratio for the resist pattern.
- m 1 , m 2 , m 3 and m 4 are each independently an integer of 1 to 20 from the viewpoint of obtaining desired resolution, sword shape and residual film ratio for the resist pattern Is preferable, and an integer of 2 to 10 is more preferable. Furthermore, in the general formula (I), m 1 + m 2 + m 3 + m 4 is preferably 1 to 36 or 4 to 36.
- Examples of the compound represented by the general formula (I) include pentaerythritol (poly) alkoxytetramethacrylate.
- Examples of the compound represented by the general formula (I) include compounds listed in JP2013-156369A, for example, pentaerythritol (poly) alkoxytetramethacrylate and the like.
- hexa (meth) acrylate compound As the hexa (meth) acrylate compound, a total of 1 to 24 mol of ethylene oxide is added to the six terminals of dipentaerythritol, and a total of 1 to 10 mol of the six terminals of dipentaerythritol is added. Hexa (meth) acrylate to which ⁇ -caprolactone is added is preferred.
- the photosensitive resin composition according to the present embodiment includes (B) an ethylenically unsaturated compound as a compound having an ethylenically unsaturated bond. It is particularly preferable to include a (meth) acrylate compound having 4 or more bonds and having an alkylene oxide chain.
- the ethylenically unsaturated bond is more preferably derived from a methacryloyl group, and the alkylene oxide chain is more preferably an ethylene oxide chain.
- the photosensitive resin composition includes (B) an alkylene oxide chain as a compound having an ethylenically unsaturated bond. It is preferable to include a (meth) acrylate compound having a dipentaerythritol skeleton.
- the alkylene oxide chain include an ethylene oxide chain, a propylene oxide chain, a butylene oxide chain, a pentylene oxide chain, and a hexylene oxide chain.
- the photosensitive resin composition includes a plurality of alkylene oxide chains, they may be the same as or different from each other.
- an ethylene oxide chain an ethylene oxide chain, a propylene oxide chain, and a butylene oxide chain are more preferable, an ethylene oxide chain and a propylene oxide chain are further preferable, and an ethylene oxide chain is particularly preferable.
- (A) an alkali-soluble polymer and a (meth) acrylate compound having an alkylene oxide chain and a dipentaerythritol skeleton are used in combination, whereby the chemical resistance, adhesion and resolution of the resist pattern are obtained. Gender balance tends to be maintained.
- the (meth) acrylate compound having an alkylene oxide chain and a dipentaerythritol skeleton is an ester of a dipentaerythritol compound in which at least one of a plurality of hydroxyl groups is modified with an alkyleneoxy group and (meth) acrylic acid.
- Six hydroxyl groups of the dipentaerythritol skeleton may be modified with an alkyleneoxy group.
- the number of ester bonds in one ester molecule may be 1 to 6, and is preferably 6.
- Examples of the (meth) acrylate compound having an alkylene oxide chain and a dipentaerythritol skeleton include, for example, hexapentane having an average of 4 to 30 mol, an average of 6 to 24 mol, or an average of 10 to 14 mol of alkylene oxide added to dipentaerythritol. (Meth) acrylate is mentioned.
- each R independently represents a hydrogen atom or a methyl group, and n is an integer of 0 to 30 and the total value of all n is 1 or more ⁇ preferable.
- the average value of all n is 4 or more, or each n is 1 or more.
- R is preferably a methyl group.
- the content of the (meth) acrylate compound having an alkylene oxide chain and a dipentaerythritol skeleton with respect to the total solid content in the photosensitive resin composition is preferably 1% by mass to 50% by mass. More preferably, it is in the range of 5% to 40% by weight, and still more preferably 7% to 30% by weight.
- the content of the (meth) acrylate compound having 3 or more ethylenically unsaturated bonds (b1) with respect to the total solid content of the photosensitive resin composition is more than 0% by mass and 40% by mass or less. Is preferred. When this content exceeds 0% by mass, the resolution and the adhesion tend to be improved, and when it is 40% by mass or less, the flexibility of the cured resist is improved and the peeling time tends to be shortened.
- the content is more preferably 2% by mass or more and 30% by mass or less, and further preferably 4% by mass or more and 25% by mass or less.
- the photosensitive resin composition may be (B) a compound having an ethylenically unsaturated bond, (b2) a butylene oxide chain or a propylene oxide chain, and one or It is preferable to include a compound having two (meth) acryloyl groups.
- the compound having a butylene oxide chain or propylene oxide chain and one or two (meth) acryloyl groups is preferably 500 or more, more preferably 700 or more, and still more preferably, from the viewpoint of suppression of bleed-out. Has a molecular weight of 1000 or more.
- (B2) As a compound having a butylene oxide chain or a propylene oxide chain and one or two (meth) acryloyl groups, polypropylene glycol (meth) acrylate, polypropylene glycol di (meth) acrylate, polytetramethylene glycol ( And (meth) acrylate, polytetramethylene glycol di (meth) acrylate, and the like.
- the compound having a butylene oxide chain or a propylene oxide chain and one or two (meth) acryloyl groups may contain an ethylene oxide chain in addition to the butylene oxide chain or the propylene oxide chain.
- the compound having (b2) butylene oxide chain or propylene oxide chain and one or two (meth) acryloyl groups is preferably 1-20, more preferably 4-15, A (meth) acrylate or di (meth) acrylate having 6 to 12 C 4 H 8 O or C 3 H 6 O is preferred.
- the content of the compound having (b2) butylene oxide chain or propylene oxide chain and one or two (meth) acryloyl groups exceeds 0% by mass relative to the total solid content of the photosensitive resin composition And it is preferable that it is 20 mass% or less.
- the photosensitive resin composition may include (b3) a compound having an aromatic ring and an ethylenically unsaturated bond as a compound having (B) an ethylenically unsaturated bond.
- the compound having an aromatic ring and an ethylenically unsaturated bond may further have an alkylene oxide chain.
- the aromatic ring is preferably incorporated in the compound as a divalent skeleton derived from bisphenol A, a divalent skeleton derived from naphthalene, a divalent aromatic group such as phenylene or methylphenylene, and the like.
- the alkylene oxide chain may be an ethylene oxide chain, a propylene oxide chain, or a combination thereof.
- the ethylenically unsaturated bond is preferably incorporated as a (meth) acryloyl group in the compound (b3) having an aromatic ring and an ethylenically unsaturated bond.
- the compound (b3) having an aromatic ring and an ethylenically unsaturated bond the following general formula (II): ⁇ Wherein R 1 and R 2 each independently represent a hydrogen atom or a methyl group, A is C 2 H 4 , B is C 3 H 6 , and n 1 and n 3 are each independently N is an integer from 1 to 39, n 1 + n 3 is an integer from 2 to 40, n 2 and n 4 are each independently an integer from 0 to 29, and n 2 + n 4 is an integer from 0 to 30
- the arrangement of the repeating units of-(AO)-and-(BO)- may be random or block. In the case of a block,-(AO)-and- Any of (B—O) — may be on the bisphenyl group side. ⁇ Can be used.
- polyethylene glycol dimethacrylate having an average of 5 moles of ethylene oxide added to both ends of bisphenol A and polyethylene glycol having an average of 2 moles of ethylene oxide added to both ends of bisphenol A, respectively.
- diglycolate of polyethylene and polyethylene glycol dimethacrylate in which 1 mol of ethylene oxide is added to both ends of bisphenol A on average are respectively preferred.
- hetero atom examples include a halogen atom
- substituent examples include an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 10 carbon atoms, an aryl group having 6 to 18 carbon atoms, and a phenacyl group.
- substituents may form a condensed ring, or a hydrogen atom in these substituents may be substituted with a hetero atom such as a halogen atom.
- the aromatic ring in the general formula (II) has a plurality of substituents, the plurality of substituents may be the same or different.
- the content of the compound (b3) having an aromatic ring and an ethylenically unsaturated bond exceeds 0% by mass and 50% by mass or less with respect to the total solid content of the photosensitive resin composition. If this content exceeds 0% by mass, resolution and adhesion tend to be improved. This content is preferably 50% by mass or less from the viewpoint of development time and edge fusion.
- the photosensitive resin composition according to this embodiment includes (B4) 1 as a compound having an ethylenically unsaturated bond. It is particularly preferable to contain a compound having an ethylene oxide structure in the molecule of 1 mol or more and 15 mol or less and having two ethylenically unsaturated bonds in one molecule.
- the amount of the ethylene oxide structure is preferably 1 mol or more from the viewpoints of resist pattern flexibility, developability, and developer scum suppression, and is preferably 15 mol or less from the viewpoint of resist pattern adhesion.
- ethylenically unsaturated bonds are contained in one molecule.
- a (meth) acryloyl group is particularly preferable.
- the compound having an ethylene oxide structure of 1 to 15 mol in one molecule and having two ethylenically unsaturated bonds in one molecule preferably further contains an aromatic ring.
- the amount of the compound containing 1 to 15 moles of ethylene oxide structure in one molecule and having two ethylenically unsaturated bonds in one molecule is the total solid content of the photosensitive resin composition. On the other hand, 5 mass% or more is preferable, 10 mass% or more is more preferable, 15 mass% or more is especially preferable, and 50 mass% or less is preferable from a viewpoint of the alkali tolerance of a resist pattern.
- (B4) When a compound having an ethylene oxide structure of 1 to 15 mol in one molecule and having two ethylenically unsaturated bonds in one molecule is used, (A) Aroma in an alkali-soluble polymer
- the copolymerization ratio of the group-group-containing comonomer is 40% by mass or more, in particular, the copolymerization ratio of styrene in the (A) alkali-soluble polymer is 30% by mass or more. It is preferable from the point.
- the (meth) acrylate compound having the alkylene oxide chain and the dipentaerythritol skeleton and the (b1) to (b4) compounds described above can be used independently or in combination.
- the photosensitive resin composition includes (B) (meth) acrylate compounds having an alkylene oxide chain and a dipentaerythritol skeleton and (b1) to (b4) compounds as compounds having an ethylenically unsaturated bond, as well as other compounds. Compounds may also be included.
- Other compounds include acrylate compounds having at least one (meth) acryloyl group, (meth) acrylates having urethane bonds, compounds obtained by reacting polyhydric alcohols with ⁇ , ⁇ -unsaturated carboxylic acids, glycidyl Examples thereof include compounds obtained by reacting a group-containing compound with an ⁇ , ⁇ -unsaturated carboxylic acid, phthalic acid compounds, and the like. Among them, an acrylate compound having at least two (meth) acryloyl groups is preferable from the viewpoints of resolution, adhesion, and peeling time.
- the acrylate compound having at least two (meth) acryloyl groups may be di, tri, tetra, penta, hexa (meth) acrylate and the like.
- polyethylene glycol di (meth) acrylate, polypropylene glycol di (meth) acrylate, di (meth) acrylate having both ethylene oxide and polypropylene oxide for example, “FA-023M, FA-024M, FA-027M, product name, Hitachi "Made by Kasei Kogyo” is preferred from the viewpoints of flexibility, resolution, adhesion and the like.
- ethylenically unsaturated bonds such as 4-normalnonylphenoxyoctaethylene glycol acrylate, 4-normalnonylphenoxytetraethylene glycol acrylate, ⁇ -chloro- ⁇ -hydroxypropyl- ⁇ '-methacryloyloxyethyl-schreib-phthalate Is preferable from the viewpoint of peelability and cured film flexibility, and ⁇ -chloro- ⁇ -hydroxypropyl- ⁇ '-methacryloyloxyethyl- GmbH-phthalate has sensitivity, resolution, and adhesion. It is also preferable from the viewpoint.
- (B) in order to suppress bleed out of the components of the dry film resist and improve the storage stability, (B) preferably 70 masses based on the total solid content of the compound having an ethylenically unsaturated bond. % Or more, more preferably 80% by mass or more, still more preferably 90% by mass or more, and particularly preferably 100% by mass is a compound having a weight average molecular weight of 500 or more. From the viewpoint of suppression of bleed out and chemical resistance of the resist pattern, the weight average molecular weight of the compound (B) having an ethylenically unsaturated bond is preferably 760 or more, more preferably 800 or more, still more preferably 830 or more, particularly Preferably it is 900 or more.
- the weight average molecular weight of the compound (B) having an ethylenically unsaturated bond can be determined as a molecular weight calculated from the molecular structure of the compound (B) having an ethylenically unsaturated bond.
- the molecular weight of each compound can be determined by weighted averaging with the content.
- the concentration of the methacryloyl group in the compound (B) having an ethylenically unsaturated bond is preferably 0.20 mol / 100 g or more. More preferably, it is 0.30 mol / 100g or more, More preferably, it is 0.35 mol / 100g or more.
- the upper limit of the concentration of the methacryloyl group is not limited as long as the polymerizability and the alkali developability are ensured, and may be, for example, 0.90 mol / 100 g or less or 0.80 mol / 100 g or less.
- the value of (B) methacryloyl group concentration / (methacryloyl group concentration + acryloyl group concentration) in the compound having an ethylenically unsaturated bond is preferably 0.50 or more, more preferably 0. .60 or more, more preferably 0.80 or more, particularly preferably 0.90 or more, and most preferably 0.95 or more.
- the total content of all (B) compounds having an ethylenically unsaturated bond in the product is preferably 1% by mass to 70% by mass, more preferably 2% by mass, based on the total solid content of the photosensitive resin composition. % To 60% by mass, more preferably 4% to 50% by mass.
- the photopolymerization initiator is a compound that polymerizes a monomer by light.
- the photosensitive resin composition can contain the compound generally known in this technical field as (C) photoinitiator.
- the photopolymerization initiator (C) includes a compound that functions as a polymerization initiator by absorbing the first active light having a central wavelength of less than 390 nm and the second active light having a central wavelength of 390 nm or more.
- the photosensitive resin composition can have photosensitivity to the first active light and the second active light, and can be used for two-wavelength exposure.
- the (C) photopolymerization initiator used in this embodiment a compound having a plurality of absorption maxima in the wavelength range of the first active light and the second active light is advantageous. More specifically, the (C) photopolymerization initiator includes anthracene and / or an anthracene derivative. (C) The use of at least anthracene and / or an anthracene derivative as the photopolymerization initiator is advantageous in that the photosensitive resin composition of the present embodiment has a composition suitable for two-wavelength exposure.
- the total content of the photopolymerization initiator (C) in the photosensitive resin composition is preferably 0.01 to 20% by mass, more preferably 0.05 to 10% by mass, and still more preferably 0.1% by mass. % To 7% by mass, particularly preferably in the range of 0.1% to 6% by mass.
- the total content of the photopolymerization initiator is preferably 0.01% by mass or more from the viewpoint of obtaining sufficient sensitivity, and sufficiently transmits light to the bottom surface of the resist to provide good high resolution. It is preferable that it is 20 mass% or less from a viewpoint of obtaining.
- the photosensitive resin composition contains anthracene and / or an anthracene derivative as a photopolymerization initiator (C) from the viewpoint of improving sensitivity and adhesion.
- the anthracene derivative preferably has an optionally substituted alkoxy group having 1 to 40 carbon atoms in at least one of the 9th and 10th positions.
- the 10-positions has an optionally substituted alkoxy group having 1 to 30 carbon atoms.
- the 9,10-position has an optionally substituted alkoxy group having 1 to 40 carbon atoms, and the 9,10-position has a substituent. More preferably, it has an optionally substituted alkoxy group having 1 to 30 carbon atoms.
- the number of carbon atoms in the 9th and 10th groups may be the same or different.
- the anthracene derivative preferably has an aryl group having 6 to 40 carbon atoms which may have a substituent at at least one of the 9-position and the 10-position.
- an aryl group having 6 to 40 carbon atoms which may have a substituent at the 9,10 position, and to have a substituent at the 9,10 position. More preferably, it has an aryl group having 6 to 30 carbon atoms.
- the number of carbon atoms in the 9th and 10th groups may be the same or different.
- the groups at the 9-position and the 10-position may be the same group or different groups.
- the 9-position group is an optionally substituted alkoxy group having 1 to 40 carbon atoms
- the 10-position group is an optionally substituted aryl group having 6 to 40 carbon atoms. There may be.
- Examples of the aryl group having 6 to 40 carbon atoms which may have a substituent include a phenyl group, a biphenyl group, a naphthyl group, and an anthracenyl group; an aryl group to which an alkoxy group is added, such as a methoxyphenyl group and an ethoxyphenyl group; An aryl group to which an alkyl group is added, such as a tolyl group, a xylyl group, a mesityl group, a nonylphenyl group; an aryl group to which a halogen is added, such as a chlorophenyl group; an aryl group to which a hydroxyl group is added, such as a hydroxyphenyl group It is done. Of these, a phenyl group is more preferred.
- the anthracene derivative is preferably represented by the following general formula (IV).
- R 1 is independently a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 40 carbon atoms, a substituted or unsubstituted alicyclic group having 3 to 20 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, substituted or unsubstituted An unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, or an N (R ′) 2 group, and two or more R 1 may be bonded to each other to form a cyclic structure, and the cyclic structure is a heteroatom; May be included.
- X is independently a single bond, oxygen atom, sulfur atom, carbonyl group, sulfonyl group, —N (R ′) — group, —CO—O— group, —CO—S— group, —SO 2 —O— group.
- —SO 2 —S— group, —SO 2 —N (R ′) — group, —O—CO— group, —S—CO— group, —O—SO 2 — group or S—SO 2 — group Show.
- a combination in which X is a single bond and R 1 is a hydrogen atom (that is, unsubstituted anthracene) is excluded.
- R ′ is a hydrogen atom, a substituted or unsubstituted alkyl group having 1 to 40 carbon atoms, a substituted or unsubstituted alicyclic group having 3 to 20 carbon atoms, an alkenyl group having 2 to 4 carbon atoms, or 6 carbon atoms.
- R ′ may be bonded to each other to form a cyclic structure, and the cyclic structure may contain a hetero atom .
- P is an integer of 1 to 10, preferably 2 to 4.
- substituted or unsubstituted alkyl group having 1 to 40 carbon atoms in R 1 and R ′ include a methyl group, ethyl group, n-propyl group, n-butyl group, n-pentyl group, n -Hexyl group, n-heptyl group, n-octyl group, n-nonyl group, n-decyl group, n-undecyl group, n-dodecyl group, n-tetradecyl group, n-hexadecyl group, n-eicosyl group, i -Propyl group, i-butyl group, sec-butyl group, t-butyl group and the like.
- substituted or unsubstituted alicyclic group having 3 to 20 carbon atoms in R 1 and R ′ include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, and a bridged bridge having 6 to 20 carbon atoms.
- Examples thereof include alicyclic hydrocarbon groups (for example, norbornyl group, tricyclodecanyl group, tetracyclododecyl group, adamantyl group, methyladamantyl group, ethyladamantyl group, and butyladamantyl group).
- alkenyl group having 2 to 4 carbon atoms in R 1 and R ′ include vinyl and propenyl groups.
- substituted or unsubstituted aryl group having 6 to 40 carbon atoms in R 1 and R ′ include phenyl group, biphenyl group, naphthyl group, anthracenyl group, methoxyphenyl group, ethoxyphenyl group, tolyl group, xylyl group.
- Examples of the substituted or unsubstituted heteroaryl group in R 1 and R ′ include a group containing one or more heteroatoms such as a sulfur atom, an oxygen atom, and a nitrogen atom in the substituted or unsubstituted aryl group, such as a pyridyl group. Imidazolyl group, morpholinyl group, piperidyl group, pyrrolidyl group and the like.
- each hydrocarbon group of R 1 and R ′ may be substituted with a substituent.
- substituents include a hydroxyl group, a carboxyl group, and a hydroxyalkyl group having 1 to 4 carbon atoms (for example, hydroxymethyl group, 1-hydroxyethyl group, 2-hydroxyethyl group, 1-hydroxypropyl group, 2- Hydroxypropyl group, 3-hydroxypropyl group, 1-hydroxybutyl group, 2-hydroxybutyl group, 3-hydroxybutyl group, 4-hydroxybutyl group, etc.), an alkoxyl group having 1 to 4 carbon atoms (for example, methoxy group, Ethoxy group, n-propoxy group, i-propoxy group, n-butoxy group, 2-methylpropoxy group, 1-methylpropoxy group, t-butoxy group, etc.), cyano group, cyanoalkyl group having 2 to 5 carbon atoms ( (For example, cyanomethyl group, 2-cyanoethyl group, 3-cyano
- the hydrocarbon groups for R 1 and R ′ are preferably substituted with a halogen atom.
- the anthracene derivative preferably has an alkoxy group substituted with a halogen atom at the 9-position and / or the 10-position.
- R 1 and R ′ include a hydrogen atom, a methyl group, an ethyl group, an n-propyl group, an i-propyl group, an n-butyl group, a t-butyl group, an n-pentyl group, and an n-hexyl.
- X include a single bond, an oxygen atom, a sulfur atom, an —N (R ′) — group, an —O—CO— group, and an O—SO 2 — group.
- R ′ is a hydrogen atom, methyl group, ethyl group, n-propyl group, i-propyl group, n-butyl group, cyclopentyl group, cyclohexyl.
- Group, camphoroyl group, norbornyl group or benzyl group is preferred.
- Examples of the compound represented by the general formula (IV) include, for example, 1-methylanthracene, 2-methylanthracene, 2-ethylanthracene, 2-t-butylanthracene, 9-methylanthracene, 9,10-dimethylanthracene, 9-vinylanthracene, 9-phenylanthracene, 9,10-diphenylanthracene, 2-bromo-9,10-diphenylanthracene, 9- (4-bromophenyl) -10-phenylanthracene, 9- (1-naphthyl) anthracene 9- (2-naphthyl) anthracene, 2-bromo-9,10-bis (2-naphthyl) anthracene, 2,6-dibromo-9,10-bis (2-naphthyl) anthracene, 9,10-diethoxy Anthracene, 9,10-dipropoxy
- 9,10-dimethylanthracene, 9,10-diphenylanthracene, 9,10-diethoxyanthracene, 9,10-dipropoxyanthracene, 9,10-dibutoxyanthracene, 9,10-di (2 -Ethylhexyloxy) anthracene and 9,10-bis- (3-chloropropoxy) anthracene are preferred, and 9,10-diethoxyanthracene, 9,10-dibutoxyanthracene and 9 are particularly preferred from the viewpoints of sensitivity, adhesion and resolution.
- 10-diphenylanthracene and 9,10-bis- (3-chloropropoxy) anthracene are more preferable, and 9,10-dibutoxyanthracene and 9,10-diphenylanthracene are particularly preferable.
- 9,10-dibutoxyanthracene is particularly advantageous in terms of adhesion and resolution.
- the compounds represented by the general formula (IV) may be used alone or in combination of two or more.
- the compound represented by the general formula (IV) is used for two-wavelength exposure using a first active light having a central wavelength of less than 390 nm and a second active light having a center wavelength of 390 nm or more. It is particularly useful for providing a photosensitive resin composition exhibiting excellent sensitivity, adhesion and resolution.
- the photopolymerization initiator preferably contains an anthracene derivative having a halogen atom.
- a preferred example of the anthracene derivative having a halogen atom is a halogen-substituted product of 9,10-dialkoxyanthracene.
- Preferable examples of the halogen-substituted product are compounds in which the 9-position and / or 10-position alkoxy group of 9,10-dialkoxyanthracene is modified with one or more halogens.
- Preferred alkoxy groups include those exemplified above as alkoxy groups having 1 to 40 carbon atoms.
- anthracene derivative a compound having a halogen atom directly bonded to the anthracene skeleton is also preferable.
- anthracene compounds include 9-bromo-10-phenylanthracene, 9-chloro-10-phenylanthracene, 9-bromo-10- (2-naphthyl) anthracene, 9-bromo-10- (1-naphthyl) Anthracene, 9- (2-biphenylyl) -10-bromoanthracene, 9- (4-biphenylyl) -10-bromoanthracene, 9-bromo-10- (9-phenanthryl) anthracene, 2-bromoanthracene, 9-bromoanthracene 2-chloroanthracene and 9,10-dibromoanthracene.
- the total amount of anthracene and anthracene derivative, or in a preferred embodiment, the amount of the compound represented by the general formula (IV) is preferably 0.05 to 5% by mass with respect to the total solid content of the photosensitive resin composition, The range is more preferably 0.1 to 3% by mass, and particularly preferably 0.1 to 1.0% by mass.
- the photopolymerization initiator may further contain a compound other than anthracene and an anthracene derivative, such as quinones, aromatic ketones, acetophenones, acylphosphine oxides, benzoin or benzoin ether.
- a compound other than anthracene and an anthracene derivative such as quinones, aromatic ketones, acetophenones, acylphosphine oxides, benzoin or benzoin ether.
- acridines eg 9-phenylacridine, bisacridin
- aromatic ketones examples include benzophenone, Michler's ketone [4,4′-bis (dimethylamino) benzophenone], 4,4′-bis (diethylamino) benzophenone, 4-methoxy-4′-dimethylaminobenzophenone. Can do. These can be used alone or in combination of two or more. Among these, 4,4'-bis (diethylamino) benzophenone is preferable from the viewpoint of adhesion. Furthermore, from the viewpoint of transmittance, the content of aromatic ketones in the photosensitive resin composition is preferably 0.01% by mass to 0.5% by mass, more preferably 0.02% by mass to 0.3%. It is in the range of mass%.
- hexaarylbiimidazole examples include 2- (o-chlorophenyl) -4,5-diphenylbiimidazole, 2,2 ′, 5-tris- (o-chlorophenyl) -4- (3,4-dimethoxyphenyl) -4 ', 5'-diphenylbiimidazole, 2,4-bis- (o-chlorophenyl) -5- (3,4-dimethoxyphenyl) -diphenylbiimidazole, 2,4,5-tris- (o-chlorophenyl) ) -Diphenylbiimidazole, 2- (o-chlorophenyl) -bis-4,5- (3,4-dimethoxyphenyl) -biimidazole, 2,2′-bis- (2-fluorophenyl) -4,4 ′ , 5,5′-tetrakis- (3-methoxyphenyl) -biimid
- the content of the hexaarylbisimidazole compound in the photosensitive resin composition is preferably 0.05% by mass to 8% by mass, more preferably from the viewpoint of improving the peeling characteristics and / or sensitivity of the photosensitive resin layer. It is in the range of 0.1% to 7% by weight, more preferably 1% to 6% by weight.
- the photosensitive resin composition may contain one or more pyrazoline compounds as the (C) photopolymerization initiator. preferable.
- Examples of the pyrazoline compound include 1-phenyl-3- (4-tert-butyl-styryl) -5- (4-tert-butyl-phenyl) -pyrazoline, 1- (4- (benzoxazol-2-yl) Phenyl) -3- (4-tert-butyl-styryl) -5- (4-tert-butyl-phenyl) -pyrazoline, 1-phenyl-3- (4-biphenyl) -5- (4-tert-butyl- Phenyl) -pyrazoline, 1-phenyl-3- (4-biphenyl) -5- (4-tert-octyl-phenyl) -pyrazoline, 1-phenyl-3- (4-isopropylstyryl) -5- (4-isopropyl) Phenyl) -pyrazoline, 1-phenyl-3- (4-methoxystyryl) -5- (4-methoxyphenyl) -
- the photosensitive resin composition may contain additives such as dyes, plasticizers, antioxidants, and stabilizers as desired.
- additives listed in JP2013-156369A may be used.
- the photosensitive resin composition contains tris (4-dimethylaminophenyl) methane [leuco crystal violet] and / or diamond green (Eisen (Hodogaya Chemical Co., Ltd.) as a dye. Registered trademark) DIAMOND GREEN GH).
- the content of the dye in the photosensitive resin composition is preferably 0.001% by mass to 3% by mass, more preferably 0.01% by mass to 2% by mass, and still more preferably 0.02% by mass to 1% by mass. Is within the range.
- the content of the dye is preferably 0.001% by mass or more from the viewpoint of obtaining good colorability, and preferably 3% by mass or less from the viewpoint of maintaining the sensitivity of the photosensitive resin layer.
- the photosensitive resin composition is used as a stabilizer.
- Radical polymerization inhibitors such as nitrosophenylhydroxyamine aluminum salt, p-methoxyphenol, 4-tert-butylcatechol, 4-ethyl-6-tert-butylphenol, etc .
- Benzotriazoles such as 1- (N, N-bis (2-ethylhexyl) aminomethyl) -1,2,3-benzotriazole, 2,2 ′-(((methyl-1H-benzotriazol-1-yl ) Methyl) imino) bisethanol, 1- (2-di-n-butylaminomethyl) -5-carboxylbenzotriazole and 1- (2-di-n-butylaminomethyl) -6-carboxylbenzotriazole 1 mixture, etc .
- Carboxybenzotriazoles such as 4-carboxy-1,2,3-benzotriazole, 5-carboxy
- the total content of all stabilizers in the photosensitive resin composition is preferably 0.001% by mass to 3% by mass, more preferably 0.01% by mass to 1% by mass, and still more preferably 0.05% by mass. % To 0.7% by mass.
- the total content of the stabilizer is preferably 0.001% by mass or more from the viewpoint of imparting good storage stability to the photosensitive resin composition, and from the viewpoint of maintaining the sensitivity of the photosensitive resin layer. It is preferable that it is 3 mass% or less.
- the photosensitive resin composition preparation liquid can be formed by adding a solvent to the photosensitive resin composition.
- Suitable solvents include: ketones such as methyl ethyl ketone (MEK) and the like; and alcohols such as methanol, ethanol, isopropyl alcohol and the like. It is preferable to add a solvent to the photosensitive resin composition so that the viscosity of the photosensitive resin composition preparation liquid is 500 mPa ⁇ second to 4000 mPa ⁇ second at 25 ° C.
- the photosensitive resin laminated body which has a support body and the photosensitive resin layer which consists of the said photosensitive resin composition laminated
- the photosensitive resin laminate may have a protective layer on the side opposite to the support side of the photosensitive resin layer.
- the support is not particularly limited, but is preferably a transparent one that transmits light emitted from the exposure light source.
- a support include a polyethylene terephthalate film, a polyvinyl alcohol film, a polyvinyl chloride film, a vinyl chloride copolymer film, a polyvinylidene chloride film, a vinylidene chloride copolymer film, a polymethyl methacrylate copolymer film, Examples include polystyrene film, polyacrylonitrile film, styrene copolymer film, polyamide film, and cellulose derivative film. These films may be stretched as necessary.
- the haze is preferably 0.01% to 5.0%, more preferably 0.01% to 2.5%, and still more preferably 0.01% to 1.0%.
- an important characteristic of the protective layer used in the photosensitive resin laminate is that the protective layer is smaller than the support in terms of adhesion to the photosensitive resin layer and can be easily peeled off.
- a protective layer a polyethylene film, a polypropylene film, etc. are preferable, for example.
- a film having excellent peelability described in JP-A-59-202457 can be used.
- the thickness of the protective layer is preferably 10 ⁇ m to 100 ⁇ m, more preferably 10 ⁇ m to 50 ⁇ m.
- the thickness of the photosensitive resin layer in the photosensitive resin laminate is preferably 5 ⁇ m to 100 ⁇ m, more preferably 7 ⁇ m to 60 ⁇ m. As the thickness of the photosensitive resin layer is smaller, the resolution of the resist pattern is improved. On the other hand, the larger the thickness is, the more the strength of the cured film is improved.
- a known method may be used as a method for preparing a photosensitive resin laminate by sequentially laminating a support, a photosensitive resin layer, and if desired, a protective layer.
- the above-mentioned photosensitive resin composition preparation liquid is prepared, and then the preparation liquid is applied onto a support using a bar coater or a roll coater and dried, and then the photosensitive resin composition preparation liquid is applied onto the support.
- the formed photosensitive resin layer is laminated.
- a photosensitive resin laminate can be produced by laminating a protective layer on the photosensitive resin layer.
- This embodiment also provides a method for producing a resist pattern.
- the method includes an exposure step of exposing the above-described photosensitive resin composition and a development step of developing the exposed photosensitive resin composition.
- Development steps are preferably included in this order.
- An example of a specific method for forming a resist pattern in the present embodiment is shown below.
- a photosensitive resin layer is formed on a substrate using a laminator. Specifically, when the photosensitive resin laminate has a protective layer, the protective layer is peeled off, and then the photosensitive resin layer is heat-pressed and laminated on the substrate surface with a laminator.
- the material of the substrate include copper, stainless steel (SUS), glass, indium tin oxide (ITO), and the like.
- the photosensitive resin layer may be laminated on only one surface of the substrate surface, or may be laminated on both surfaces as necessary.
- the heating temperature during lamination is generally 40 ° C to 160 ° C.
- substrate of the resist pattern obtained can be improved by performing the thermocompression bonding at the time of lamination twice or more.
- a two-stage laminator provided with two rolls may be used, or the lamination of the substrate and the photosensitive resin layer may be repeated several times and passed through the roll.
- the photosensitive resin layer is exposed to active light using an exposure machine.
- the exposure can be performed after peeling the support, if desired.
- the exposure amount is determined by the light source illuminance and the exposure time, and may be measured using a light meter.
- direct imaging exposure may be performed.
- direct imaging exposure exposure is performed directly on a substrate by a drawing apparatus without using a photomask.
- the light source a semiconductor laser having a wavelength of 350 nm to 410 nm or an ultrahigh pressure mercury lamp is used.
- the drawing pattern is controlled by a computer, the exposure amount is determined by the illuminance of the exposure light source and the moving speed of the substrate.
- a direct drawing exposure process using active light (preferably laser light) having a wavelength of less than 390 nm as a central wavelength and active light (preferably laser light) having a wavelength of 390 nm or more as a central wavelength is included. Applied.
- the curing reaction of the photosensitive resin may be promoted by performing a heat treatment after the exposure.
- a known method such as heating with an oven or heating with a hot roll can be applied.
- the unexposed or exposed portion of the exposed photosensitive resin layer is removed with a developer using a developing device. If there is a support on the photosensitive resin layer after exposure, this is excluded. Subsequently, an unexposed portion or an exposed portion is developed and removed using a developer composed of an alkaline aqueous solution, and a resist image is obtained through a water washing step and a drying step. In the water washing step, ion-exchanged water or water to which magnesium ions or calcium ions are added can be used.
- an aqueous solution of Na 2 CO 3 , K 2 CO 3 or the like is preferable.
- the alkaline aqueous solution is selected in accordance with the characteristics of the photosensitive resin layer, but an aqueous Na 2 CO 3 solution having a concentration of 0.2% by mass to 2% by mass is generally used.
- a surfactant, an antifoaming agent, a small amount of an organic solvent for accelerating development, and the like may be mixed.
- the temperature of the developer in the development process is preferably kept constant within a range of 20 ° C. to 40 ° C.
- a heating process can be further performed at 100 to 300 ° C. if desired. By performing this heating step, the chemical resistance of the resist pattern can be improved.
- a heating furnace using hot air, infrared rays, or far infrared rays can be used for the heating step.
- the photosensitive resin composition of this embodiment can be used suitably in order to form the circuit of a printed circuit board.
- the present embodiment provides a circuit board manufacturing method in which a circuit board is formed by etching or plating a substrate having a resist pattern manufactured by the above resist pattern manufacturing method.
- a subtractive process and a semi-additive process are used as a circuit formation method for a printed circuit board.
- the subtractive process is a method of forming a circuit by removing only a non-circuit portion from a conductor disposed on the entire surface of a substrate by etching.
- SAP is a method in which a resist is formed on a non-circuit portion on a conductor seed layer disposed on the entire surface of a substrate, and then only a circuit portion is formed by plating.
- the photosensitive resin composition is more preferably used for SAP.
- the elongation of the cured product of the photosensitive resin composition is preferably 1 mm or more per length of 40 mm in the extension direction and more preferably 2 mm or more in order to improve the flexibility of the resist pattern. Preferably, it is 3 mm or more.
- the elongation of the cured product was obtained by exposing a photosensitive resin laminate produced using the photosensitive resin composition through a rectangular mask of 5 mm ⁇ 40 mm, and developing it for a time twice as long as the minimum development time. It is measured by pulling the cured resist with a tensile tester (Orientec Co., Ltd., RTM-500) at a speed of 100 mm / min.
- a tensile tester Orientec Co., Ltd., RTM-500
- the Young modulus of the cured product of the photosensitive resin composition is preferably in the range of 1.5 GPa or more and less than 8 GPa from the viewpoint of resolution and flexibility of the resist pattern.
- “Young Modulus” can be measured by a nanoindentation method using, for example, Nanoindenter DCM manufactured by Toyo Technica Co., Ltd.
- “Young Modulus” is a method of laminating a resin composition to be measured on a substrate, exposing and developing the surface of the photosensitive resin composition on the substrate using Nanoindenter DCM manufactured by Toyo Technica Co., Ltd. taking measurement. Measurement methods include DCM Basic Hardness, Modulus, Tip Cal, Load Control.
- the Young's modulus is the value of “Modulas At Max Load”.
- the method for producing a conductor pattern includes a lamination step of laminating a photosensitive resin layer composed of the above-described photosensitive resin composition on a substrate such as a metal plate or a metal film insulating plate, an exposure step of exposing the photosensitive resin layer, and an exposure step.
- the conductor pattern manufacturing method is performed by using a metal plate or a metal film insulating plate as a substrate, forming a resist pattern by the above-described resist pattern manufacturing method, and then performing a conductor pattern forming step.
- a conductor pattern is formed on a substrate surface (for example, a copper surface) exposed by development using a known etching method or plating method.
- the present invention is preferably applied in the following applications, for example.
- the resist pattern is further separated from the substrate with an aqueous solution having alkalinity stronger than that of the developer, whereby a wiring board having a desired wiring pattern (for example, Printed wiring board).
- a laminate of an insulating resin layer and a copper layer or a flexible substrate is used as a substrate.
- the copper layer is preferably an electroless copper plating layer containing palladium as a catalyst.
- the conductor pattern forming step is performed by a known plating method.
- the substrate is preferably a laminate of an insulating resin layer and a copper foil, and more preferably a copper-clad laminate.
- 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 2% by mass to 5% by mass or an organic amine-based stripping solution may be used. Generally used. A small amount of a water-soluble solvent may be added to the stripping solution. As a water-soluble solvent, alcohol etc. are mentioned, for example.
- the temperature of the stripping solution in the stripping step is preferably within the range of 40 ° C to 70 ° C. In order to perform SAP, it is preferable that the manufacturing method of a wiring board further includes the process of removing palladium from the obtained wiring board.
- a lead frame can be manufactured by forming a resist pattern by a resist pattern manufacturing method using a metal plate such as copper, a copper alloy, or an iron-based alloy as a substrate and then performing the following steps. First, a step of etching the substrate exposed by development to form a conductor pattern is performed. Thereafter, a desired lead frame can be obtained by performing a peeling process for peeling the resist pattern by a method similar to the method for manufacturing a wiring board.
- the resist pattern formed by the resist pattern manufacturing method can be used as a protective mask member when processing the substrate by the sandblasting method.
- the substrate include glass, silicon wafer, amorphous silicon, polycrystalline silicon, ceramic, sapphire, and metal material.
- a resist pattern is formed on these substrates by the same method as the resist pattern manufacturing method. Thereafter, a blasting material is sprayed from the formed resist pattern to cut to a desired depth, and a resist pattern remaining on the substrate is removed from the substrate with an alkali stripping solution or the like.
- substrate can be manufactured.
- a known blasting material may be used.
- fine particles having a particle diameter of 2 ⁇ m to 100 ⁇ m including SiC, SiO 2 , Al 2 O 3 , CaCO 3 , ZrO, glass, stainless steel and the like are generally used.
- a semiconductor package can be manufactured by forming a resist pattern on a wafer by a resist pattern manufacturing method using a wafer on which a large-scale integrated circuit (LSI) has been formed as a substrate, and then performing the following steps. .
- LSI large-scale integrated circuit
- a step of forming a conductor pattern by performing columnar plating such as copper or solder on the opening exposed by development is performed.
- a peeling process for peeling the resist pattern is performed by a method similar to the method for manufacturing the wiring board, and further, a thin metal layer other than the columnar plating is removed by etching, thereby obtaining a desired semiconductor package.
- the photosensitive resin composition is used for the manufacture of printed wiring boards; the manufacture of lead frames for mounting IC chips; the precision processing of metal foils such as the manufacture of metal masks; ball grid arrays (BGA), chip sizes and packages.
- Manufacturing of packages such as (CSP); Manufacturing of tape substrates such as chip-on-film (COF) and tape automated bonding (TAB); Manufacturing of semiconductor bumps; and flat panels such as ITO electrodes, address electrodes, and electromagnetic wave shields It can be used for manufacturing a partition of a display.
- the photosensitive resin composition of the present embodiment is mainly intended to be used for two-wavelength exposure by having photosensitivity to the first active light and the second active light. And it may further have photosensitivity to one or more active lights different from the second active light. In this case, for example, three-wavelength exposure can be applied to the photosensitive resin composition of the present embodiment in the above-described various applications.
- the acid equivalent means the mass (gram) of a polymer having 1 equivalent of a carboxyl group in the molecule.
- Hiranuma automatic titrator (COM-555) was used, and the acid equivalent was measured by potentiometric titration using a 0.1 mol / L aqueous sodium hydroxide solution.
- the evaluation sample was prepared as follows. ⁇ Preparation of photosensitive resin laminate> The components shown in the following Tables 1 and 2 (however, the numbers of each component indicate the blending amount (parts by mass) as solid content) and the solvent are sufficiently stirred and mixed to obtain a photosensitive resin composition preparation solution. It was. The names of the components represented by abbreviations in Tables 1 and 2 are shown in Table 3. A 16 ⁇ m-thick polyethylene terephthalate film (FB-40, manufactured by Toray Industries, Inc.) was used as a support film, and this mixture was uniformly applied to the surface using a bar coater. Dry for 5 minutes to form a photosensitive resin composition layer. The dry thickness of the photosensitive resin composition layer was 25 ⁇ m.
- a 19 ⁇ m-thick polyethylene film (manufactured by Tamapoly Co., Ltd., GF-818) was bonded as a protective layer on the surface of the photosensitive resin composition layer on which the polyethylene terephthalate film was not laminated. A laminate was obtained.
- ⁇ Board surface preparation> As an evaluation board for sensitivity, image quality, adhesion, and chemical resistance, a 0.4 mm thick copper clad laminate laminated with 35 ⁇ m rolled copper foil was used as a grinding material (Nippon Carlit Co., Ltd., Sacradund R (registered trademark). The substrate for evaluation was produced by carrying out jet scrub polishing at a spray pressure of 0.2 MPa using # 220)).
- ⁇ Laminate> Using a hot roll laminator (ALA-700, manufactured by Asahi Kasei Co., Ltd.), the photosensitive resin laminate was applied to a copper clad laminate that had been leveled and preheated to 60 ° C. while peeling the polyethylene film of the photosensitive resin laminate. A test piece was obtained by laminating at a roll temperature of 105 ° C. The air pressure was 0.35 MPa, and the laminating speed was 1.5 m / min.
- ALA-700 manufactured by Asahi Kasei Co., Ltd.
- Example 1 to Example 23 and Comparative Example 1 exposure was performed using a stove 41-step tablet by a direct drawing exposure machine (light source: 375 nm (30%) + 405 nm (70%)). The exposure was performed at an exposure amount at which the maximum number of remaining film steps when exposure and development was performed using the stove 41 step tablet as a mask was 19 steps.
- ⁇ Resolution> In the above exposure process, exposure was performed using drawing data having a line pattern in which the width of the exposed area and the unexposed area was 1: 1. Development was performed according to the above-described development conditions to form a cured resist line. The minimum line width in which a cured resist line was normally formed was ranked as a resolution value according to the following criteria. AA (very good): The resolution value is 18 ⁇ m or less. A (good): The resolution value exceeds 18 ⁇ m and is less than 22 ⁇ m. C (defect): The resolution value is 22 ⁇ m or more.
- Adhesion value is 11 ⁇ m or less.
- the photosensitive resin composition of the present invention can be suitably applied to circuit formation by, for example, a subtractive process and a semi-additive process (SAP).
- SAP semi-additive process
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Abstract
Description
[1] 中心波長390nm未満の第1のレーザー光と、中心波長390nm以上の第2のレーザー光とで露光して樹脂硬化物を得るための感光性樹脂組成物であって、
前記感光性樹脂組成物は、
(A)アルカリ可溶性高分子、
(B)エチレン性二重結合を有する化合物、及び
(C)光重合開始剤を含み、
前記感光性樹脂組成物は、前記第1のレーザー光及び前記第2のレーザー光の両者に対する感光性を有し、
前記(C)光重合開始剤はアントラセン及び/又はアントラセン誘導体を含む感光性樹脂組成物。
[2] 前記(A)アルカリ可溶性高分子における芳香族基含有コモノマーの共重合比率が、40質量%以上であり、
(B)エチレン性二重結合を有する化合物として、2官能のエチレン性二重結合を有し、かつ1モル以上15モル以下のエチレンオキサイド構造を有する化合物を、感光性樹脂組成物全体の固形分に対し5質量%以上含有する上記態様1に記載の感光性樹脂組成物。
[3] 前記(A)アルカリ可溶性高分子におけるスチレンの共重合比率が30質量%以上である上記態様1又は2に記載の感光性樹脂組成物。
[4] 前記アントラセン誘導体は、9位及び/又は10位に、置換基を有していてもよい炭素数1~40のアルコキシ基及び/又は置換基を有していてもよい炭素数6~40のアリール基を有する上記態様1~3のいずれかに記載の感光性樹脂組成物。
[5] 前記アントラセン誘導体は、9,10位に、置換基を有していてもよい炭素数1~40のアルコキシ基及び/又は置換基を有していてもよい炭素数6~40のアリール基を有する上記態様1~3のいずれかに記載の感光性樹脂組成物。
[6] 前記(C)光重合開始剤は、9,10-ジフェニルアントラセンを含む上記態様1~5のいずれかに記載の感光性樹脂組成物。
[7] 前記(C)光重合開始剤は、9,10-ジブトキシアントラセンを含む上記態様1~5のいずれかに記載の感光性樹脂組成物。
[8] 前記(B)エチレン性二重結合を有する化合物は、3官能以上のエチレン性二重結合を有する化合物を含む上記態様1~7のいずれかに記載の感光性樹脂組成物。
[9] 前記(B)エチレン性二重結合を有する化合物は、4官能以上のエチレン性二重結合を有する化合物を含む上記態様1~8のいずれかに記載の感光性樹脂組成物。
[10] 前記(B)エチレン性二重結合を有する化合物は、6官能以上のエチレン性二重結合を有する化合物を含む上記態様1~9のいずれかに記載の感光性樹脂組成物。
[11] 前記(B)エチレン性二重結合を有する化合物は、炭素数3以上のアルキレンオキシド構造を含む上記態様1~10のいずれかに記載の感光性樹脂組成物。
[12] 前記第1のレーザー光の中心波長が350nm以上380nm以下であり、前記第2のレーザー光の中心波長が400nm以上410nm以下である上記態様1~11のいずれかに記載の感光性樹脂組成物。
[13] 上記態様1~12のいずれかに記載の感光性樹脂組成物を、中心波長390nm未満の第1のレーザー光と、中心波長390nm以上の第2のレーザー光とで露光することを含む感光性樹脂硬化物の製造方法。
[14] 前記第1のレーザー光の中心波長が350nm以上380nm以下であり、前記第2のレーザー光の中心波長が400nm以上410nm以下である上記態様13に記載の感光性樹脂硬化物の製造方法。
[15] (A)アルカリ可溶性高分子、
(B)エチレン性二重結合を有する化合物、及び
(C)光重合開始剤を含み、
前記(C)光重合開始剤がアントラセン及び/又はアントラセン誘導体を含む感光性樹脂組成物を、中心波長390nm未満の第1のレーザー光と、中心波長390nm以上の第2のレーザー光とで露光する露光工程と、
露光された感光性樹脂組成物を現像する現像工程と、を含むレジストパターンの製造方法。
[16] 前記露光工程の前記第1のレーザー光の中心波長が350nm以上380nm以下であり、前記第2のレーザー光の中心波長が400nm以上410nm以下である上記態様15に記載のレジストパターンの製造方法。
[17] 上記態様15又は16に記載の方法により製造されたレジストパターンを有する基板に対してエッチング又はめっきを施すことにより回路基板を形成する、回路基板の製造方法。
[18] (A)アルカリ可溶性高分子、(B)エチレン性二重結合を有する化合物、及び(C)光重合開始剤を含み、
前記(C)光重合開始剤はハロゲン原子を有するアントラセン誘導体を含む、感光性樹脂組成物。
[19] 前記(C)光重合開始剤は9,10-ジアルコキシアントラセンのハロゲン置換体を含む、上記態様18に記載の感光性樹脂組成物。
[20] 前記(C)光重合開始剤は、9,10-ジアルコキシアントラセンの9位及び/又は10位のアルコキシ基が1つ以上のハロゲンで修飾されている化合物を含む、上記態様19に記載の感光性樹脂組成物。
[21] 前記(C)光重合開始剤は、アントラセン骨格に直接結合したハロゲン原子を有する化合物を含む、上記態様18に記載の感光性樹脂組成物。
[22] 上記態様18~21のいずれかに記載の感光性樹脂組成物を中心波長390nm未満の第1のレーザー光と、中心波長390nm以上の第2のレーザー光とで露光する露光工程と、
露光された感光性樹脂組成物を現像する現像工程と、を含むレジストパターンの製造方法。
[23] 中心波長390nm未満の第1のレーザー光と、中心波長390nm以上の第2のレーザー光とで露光して樹脂硬化物を得るための感光性樹脂組成物であって、
前記感光性樹脂組成物は、(A)アルカリ可溶性高分子、(B)エチレン性二重結合を有する化合物、及び(C)光重合開始剤を含み、
前記(A)アルカリ可溶性高分子における芳香族基含有コモノマーの共重合比率が、40質量%以上である感光性樹脂組成物。
[24] 前記(B)エチレン性二重結合を有する化合物として、2官能のエチレン性二重結合を有し、かつ1モル以上15モル以下のエチレンオキサイド構造を有する化合物を、感光性樹脂組成物全体の固形分に対し5質量%以上含有する上記態様23に記載の感光性樹脂組成物。
[25] 上記態様23又は24に記載の感光性樹脂組成物を中心波長390nm未満の第1のレーザー光と中心波長390nm以上の第2のレーザー光とで露光する露光工程と、
露光された感光性樹脂組成物を現像する現像工程と、を含むレジストパターンの製造方法。
本実施形態では、感光性樹脂組成物が、(A)アルカリ可溶性高分子、(B)エチレン性二重結合(すなわちエチレン性不飽和結合)を有する化合物、及び(C)光重合開始剤を含む。(C)光重合開始剤はアントラセン及び/又はアントラセン誘導体を含む。所望により、感光性樹脂組成物は、(D)添加剤、といったその他の成分を更に含んでよい。また、本実施形態では、感光性樹脂組成物は、任意の支持体に適用されることにより、感光性樹脂層を形成することができる。
以下、感光性樹脂組成物に含まれる各成分について説明する。
(A)アルカリ可溶性高分子は、アルカリ物質に溶解可能な高分子である。(A)アルカリ可溶性高分子は、アルカリ現像性の観点から、カルボキシル基を有することが好ましく、そしてカルボキシル基含有モノマーを共重合成分として含む共重合体であることが更に好ましい。(A)アルカリ可溶性高分子は熱可塑性でもよい。
なお、本明細書において「(メタ)アクリル酸」とは、アクリル酸又はメタクリル酸を意味し、「(メタ)アクリロイル基」とは、アクリロイル基又はメタクリロイル基を意味し、そして「(メタ)アクリレート」とは、「アクリレート」又は「メタクリレート」を意味する。
モノマーが、アラルキル基を有するモノマー、及び/又はスチレンを含有することは、レジストパターンの耐薬品性、密着性、高解像性、又はスソ形状の観点から好ましい。(A)アルカリ可溶性高分子としては、メタクリル酸とベンジルメタクリレートとスチレンとからなる共重合体、メタクリル酸とメチルメタクリレートとベンジルメタクリレートとスチレンとからなる共重合体、等が特に好ましい。
(B)エチレン性不飽和結合を有する化合物は、その構造中にエチレン性不飽和基を有することによって重合性を有する化合物である。
トリ(メタ)アクリレート、例えば、エトキシ化グリセリントリ(メタ)アクリレート、エトキシ化イソシアヌル酸トリ(メタ)アクリレート、ペンタエリスリトールトリ(メタ)アクリレート、及びトリメチロールプロパントリ(メタ)アクリレート(例えば、柔軟性、密着性、及びブリードアウト抑制の観点での好適例として、トリメチロールプロパンに平均21モルのエチレンオキサイドを付加したトリ(メタ)アクリレート、及び、トリメチロールプロパンに平均30モルのエチレンオキサイドを付加したトリ(メタ)アクリレート)等;
テトラ(メタ)アクリレート、例えば、ジトリメチロールプロパンテトラ(メタ)アクリレート、ペンタエリスリトールテトラ(メタ)アクリレート、ジペンタエリスリトールテトラ(メタ)アクリレート等;
ペンタ(メタ)アクリレート、例えば、ジペンタエリスリトールペンタ(メタ)アクリレート等;
ヘキサ(メタ)アクリレート、例えば、ジペンタエリスリトールヘキサ(メタ)アクリレート、等が挙げられる。
これらの中でも、テトラ、ペンタ又はヘキサ(メタ)アクリレートが好ましい。
(b2)ブチレンオキサイド鎖又はプロピレンオキサイド鎖と、1個又は2個の(メタ)アクリロイル基とを有する化合物は、ブリードアウトの抑制の観点から、好ましくは500以上、より好ましくは700以上、更に好ましくは1000以上の分子量を有する。
(C)光重合開始剤は、光によりモノマーを重合させる化合物である。感光性樹脂組成物は、(C)光重合開始剤として本技術分野において一般に知られている化合物を含むことができる。本実施形態において、(C)光重合開始剤は、中心波長390nm未満の第1の活性光と中心波長390nm以上の第2の活性光とを吸光して重合開始剤として機能する化合物を含む。これにより、感光性樹脂組成物は、第1の活性光と第2の活性光とに対する感光性を有することができ、2波長露光に用いることが可能になる。従って、本実施形態において用いる(C)光重合開始剤としては、第1の活性光と第2の活性光の波長範囲に複数の吸収極大を有する化合物が有利である。より具体的には、(C)光重合開始剤はアントラセン及び/又はアントラセン誘導体を含む。(C)光重合開始剤として、アントラセン及び/又はアントラセン誘導体を少なくとも用いることは、本実施形態の感光性樹脂組成物を2波長露光に適した組成とする点で有利である。
置換基を有していてもよいアルコキシ基としては:
メトキシ基、エトキシ基、n-プロポキシ基、i-プロポキシ基、n-ブトキシ基、t-ブトキシ基、2-メチルプロポキシ基、1-メチルプロポキシ基、n-ペンチルオキシ基、イソアミルオキシ基、n-ヘキシルオキシ基、2-エチルヘキシルオキシ基、ノニルオキシ基、デシルオキシ基、ウンデシルオキシ基、ドデシルオキシ基、テトラデシルオキシ基、ヘキサデシルオキシ基、エイコシルオキシ基、シクロヘキシルオキシ基、ノルボルニルオキシ基、トリシクロデカニルオキシ基、テトラシクロドデシルオキシ基、アダマンチルオキシ基、メチルアダマンチルオキシ基、エチルアダマンチルオキシ基、及びブチルアダマンチルオキシ基;
ハロゲンで修飾されたアルコキシ基、例えば、クロロブトキシ基、クロロプロポキシ基;
ヒドロキシル基が付加したアルコキシ基、例えば、ヒドロキシブチルオキシ基;
シアノ基が付加したアルコキシ基、例えば、シアノブトキシ基;
アルキレンオキサイド基が付加したアルコキシ基、例えば、メトキシブトキシ基;
アリール基が付加したアルコキシ基、例えば、フェノキシブトキシ基、
等が挙げられる。この中でn-ブトキシ基がより好ましい。
感光性樹脂組成物は、所望により、染料、可塑剤、酸化防止剤、安定化剤等の添加剤を含んでよい。例えば、特開2013-156369号公報に列挙されている添加剤を使用してよい。
ラジカル重合禁止剤、例えば、ニトロソフェニルヒドロキシアミンアルミニウム塩、p-メトキシフェノール、4-tert-ブチルカテコール、4-エチル-6-tert-ブチルフェノール等;
ベンゾトリアゾール類、例えば、1-(N,N-ビス(2-エチルヘキシル)アミノメチル)-1,2,3-ベンゾトリアゾール、2,2’-(((メチル-1H-ベンゾトリアゾール-1-イル)メチル)イミノ)ビスエタノール、1-(2-ジ-n-ブチルアミノメチル)-5-カルボキシルベンゾトリアゾールと1-(2-ジ-n-ブチルアミノメチル)-6-カルボキシルベンゾトリアゾールの1:1混合物等;
カルボキシベンゾトリアゾール類、例えば、4-カルボキシ-1,2,3-ベンゾトリアゾール、5-カルボキシ-1,2,3-ベンゾトリアゾール、6-カルボキシ-1,2,3-ベンゾトリアゾール等;及び
グリシジル基を有する化合物、例えば、ビスフェノールAジグリシジルエーテル、水添ビスフェノールAジグリシジルエーテル、ネオペンチルグリコールジグリシジルエーテル等;
から成る群から選ばれる少なくとも1つを含むことが好ましい。
その他、2-メルカプトベンゾイミダゾール、1H-テトラゾール、1-メチル-5-メルカプト-1H-テトラゾール、2-アミノ-5-メルカプト-1,3,4-チアジアゾール、3-アミノ-5-メルカプト-1,2,4-トリアゾール、3-メルカプト-1,2,4-トリアゾール、3-メルカプトトリアゾール、4,5-ジフェニル-1,3-ジアゾール-2-イル、5-アミノ-1H-テトラゾール等を含んでいてもよい。
本実施形態では、感光性樹脂組成物に溶媒を添加することにより感光性樹脂組成物調合液を形成することができる。好適な溶媒としては:ケトン類、例えば、メチルエチルケトン(MEK)等;及びアルコール類、例えば、メタノール、エタノール、イソプロピルアルコール等が挙げられる。感光性樹脂組成物調合液の粘度が25℃で500mPa・秒~4000mPa・秒となるように、溶媒を感光性樹脂組成物に添加することが好ましい。
本実施形態では、支持体と、支持体上に積層された、上記感光性樹脂組成物から成る感光性樹脂層とを有する感光性樹脂積層体が提供されることができる。感光性樹脂積層体は、所望により、感光性樹脂層の支持体側と反対側に保護層を有していてもよい。
本実施形態は、レジストパターンの製造方法も提供する。当該方法は、上述の感光性樹脂組成物を露光する露光工程と、露光された感光性樹脂組成物を現像する現像工程とを含む。当該方法は、好ましくは、支持体に上述の感光性樹脂組成物から成る感光性樹脂層を積層するラミネート工程、感光性樹脂層を露光する露光工程、及び露光された感光性樹脂層を現像する現像工程を、好ましくはこの順に、含む。本実施形態においてレジストパターンを形成する具体的な方法の一例を以下に示す。
本実施形態の感光性樹脂組成物は、プリント基板の回路を形成するために好適に使用されることができる。本実施形態は、上記のレジストパターンの製造方法により製造されたレジストパターンを有する基板に対してエッチング又はめっきを施すことにより回路基板を形成する、回路基板の製造方法を提供する。
本実施形態では、感光性樹脂組成物はSAPのために使用されることがより好ましい。
導体パターンの製造方法は、金属板、金属皮膜絶縁板等の基板に上述の感光性樹脂組成物から成る感光性樹脂層を積層するラミネート工程、感光性樹脂層を露光する露光工程、露光された感光性樹脂層の未露光部又は露光部を現像液で除去することによって、レジストパターンが形成された基板を得る現像工程、及びレジストパターンが形成された基板をエッチング又はめっきする導体パターン形成工程を、好ましくはこの順に、含む。
導体パターンの製造方法により導体パターンを製造した後に、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する剥離工程を更に行うことにより、所望の配線パターンを有する配線板(例えば、プリント配線板)を得ることができる。
SAPを行うためには、配線板の製造方法は、得られた配線板からパラジウムを除去する工程を更に含むことが好ましい。
基板として銅、銅合金、又は鉄系合金等の金属板を用いて、レジストパターン製造方法によってレジストパターンを形成した後に、以下の工程を経ることにより、リードフレームを製造できる。先ず、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工程を行う。その後、配線板の製造方法と同様の方法でレジストパターンを剥離する剥離工程を行って、所望のリードフレームを得ることができる。
レジストパターン製造方法により形成されるレジストパターンは、サンドブラスト工法により基板に加工を施す時の保護マスク部材として使用することができる。この場合、基板としては、例えば、ガラス、シリコンウエハー、アモルファスシリコン、多結晶シリコン、セラミック、サファイア、金属材料等が挙げられる。これらの基板上に、レジストパターン製造方法と同様の方法によって、レジストパターンを形成する。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処理工程、及び基板上に残存したレジストパターン部分をアルカリ剥離液等で基板から除去する剥離工程を行って、基板上に微細な凹凸パターンを有する基材を製造できる。
基板として大規模集積化回路(LSI)の形成が終了したウエハを用いて、レジストパターン製造方法によりウエハにレジストパターンを形成した後に、以下の工程を経ることによって、半導体パッケージを製造することができる。先ず、現像により露出した開口部に銅、はんだ等の柱状めっきを施して、導体パターンを形成する工程を行う。その後、配線板の製造方法と同様の方法でレジストパターンを剥離する剥離工程を行って、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工程を行うことにより、所望の半導体パッケージを得ることができる。
本開示において、酸当量とは、分子中に1当量のカルボキシル基を有する重合体の質量(グラム)を意味する。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水溶液を用いて電位差滴定法により酸当量を測定した。
評価用サンプルは以下のように作製した。
<感光性樹脂積層体の作製>
下記表1~2に示す成分(但し、各成分の数字は固形分としての配合量(質量部)を示す。)及び溶媒を十分に攪拌、混合して、感光性樹脂組成物調合液を得た。表1~2に略号で表した成分の名称を、表3に示す。支持フィルムとして16μm厚のポリエチレンテレフタラートフィルム(東レ(株)製、FB-40)を用い、その表面にバーコーターを用いて、この調合液を均一に塗布し、95℃の乾燥機中で2.5分間乾燥して、感光性樹脂組成物層を形成した。感光性樹脂組成物層の乾燥厚みは25μmであった。
感度、画像性、密着性及び耐薬液性の評価基板として、35μm圧延銅箔を積層した0.4mm厚の銅張積層板を、研削材(日本カーリット(株)製、サクランダムR(登録商標#220))を用いて、スプレー圧0.2MPaでジェットスクラブ研磨することにより、評価用基板を作製した。
感光性樹脂積層体のポリエチレンフィルムを剥がしながら、整面して60℃に予熱した銅張積層板に、ホットロールラミネーター(旭化成(株)社製、AL-700)により、感光性樹脂積層体をロール温度105℃でラミネートして試験片を得た。エアー圧は0.35MPaとし、ラミネート速度は1.5m/分とした。
実施例1から実施例23、比較例1においては、直接描画露光機(光源:375nm(30%)+405nm(70%))により、ストーファー41段ステップタブレット用いて露光した。露光は、前記ストーファー41段ステップタブレットをマスクとして露光、現像したときの最高残膜段数が19段となる露光量で行った。
感光性樹脂積層体からポリエチレンテレフタレートフィルムを剥離した後、(株)フジ機工製現像装置を用い、フルコーンタイプのノズルにて、現像スプレー圧0.15MPaで、30℃の1質量%Na2CO3水溶液を所定時間スプレーして現像し、感光性樹脂層の未露光部分を溶解除去した。このとき、未露光部分の感光性樹脂層が完全に溶解するのに要する最も少ない時間を最小現像時間として測定し、最小現像時間の3倍の時間で現像してレジストパターンを作製した。その際、水洗工程は、フラットタイプのノズルにて水洗スプレー圧0.15MPaで、現像工程の5倍の時間処理した。
<感度評価>
上述の露光工程においてストーファー41段ステップタブレットのマスクを通して露光した後、現像し、最高残膜段数が19段となる露光量によって以下の基準によりランク分けした。
A(良好):最高残膜段数が19段となる露光量が60mJ/cm2以下。
B(可) :最高残膜段数が19段となる露光量が60mJ/cm2を超え、70mJ/cm2以下。
C(不良):最高残膜段数が19段となる露光量が70mJ/cm2を超える。
上述の露光工程において、露光部と未露光部の幅が1:1の比率のラインパターンを有する描画データを使用して露光した。上述の現像条件に従って現像し、硬化レジストラインを形成した。
硬化レジストラインが正常に形成されている最小ライン幅を解像度の値として以下の基準によりランク分けした。
AA(極めて良好):解像度の値が18μm以下。
A(良好):解像度の値が18μmを超え、22μm未満。
C(不良):解像度の値が22μm以上。
上述の露光工程において、露光部と未露光部の幅が1:200の比率のラインパターンを有する描画データを使用して露光した。上述の現像条件に従って現像し、硬化レジストラインが正常に形成されている最小ライン幅を密着性の値として以下の基準によりランク分けした。
AA(極めて良好):密着性の値が11μm以下。
A(良好):密着性の値が11μmを超え、13μm以下。
B(可) :密着性の値が13μmを超え、15μm以下。
C(不良):密着性の値が15μmを超える。
Claims (25)
- 中心波長390nm未満の第1のレーザー光と、中心波長390nm以上の第2のレーザー光とで露光して樹脂硬化物を得るための感光性樹脂組成物であって、
前記感光性樹脂組成物は、
(A)アルカリ可溶性高分子、
(B)エチレン性二重結合を有する化合物、及び
(C)光重合開始剤を含み、
前記感光性樹脂組成物は、前記第1のレーザー光及び前記第2のレーザー光の両者に対する感光性を有し、
前記(C)光重合開始剤はアントラセン及び/又はアントラセン誘導体を含む感光性樹脂組成物。 - 前記(A)アルカリ可溶性高分子における芳香族基含有コモノマーの共重合比率が、40質量%以上であり、
(B)エチレン性二重結合を有する化合物として、2官能のエチレン性二重結合を有し、かつ1モル以上15モル以下のエチレンオキサイド構造を有する化合物を、感光性樹脂組成物全体の固形分に対し5質量%以上含有する請求項1に記載の感光性樹脂組成物。 - 前記(A)アルカリ可溶性高分子におけるスチレンの共重合比率が30質量%以上である請求項1又は2に記載の感光性樹脂組成物。
- 前記アントラセン誘導体は、9位及び/又は10位に、置換基を有していてもよい炭素数1~40のアルコキシ基及び/又は置換基を有していてもよい炭素数6~40のアリール基を有する請求項1~3のいずれか一項に記載の感光性樹脂組成物。
- 前記アントラセン誘導体は、9,10位に、置換基を有していてもよい炭素数1~40のアルコキシ基及び/又は置換基を有していてもよい炭素数6~40のアリール基を有する請求項1~3のいずれか一項に記載の感光性樹脂組成物。
- 前記(C)光重合開始剤は、9,10-ジフェニルアントラセンを含む請求項1~5のいずれか一項に記載の感光性樹脂組成物。
- 前記(C)光重合開始剤は、9,10-ジブトキシアントラセンを含む請求項1~5のいずれか一項に記載の感光性樹脂組成物。
- 前記(B)エチレン性二重結合を有する化合物は、3官能以上のエチレン性二重結合を有する化合物を含む請求項1~7のいずれか一項に記載の感光性樹脂組成物。
- 前記(B)エチレン性二重結合を有する化合物は、4官能以上のエチレン性二重結合を有する化合物を含む請求項1~8のいずれか一項に記載の感光性樹脂組成物。
- 前記(B)エチレン性二重結合を有する化合物は、6官能以上のエチレン性二重結合を有する化合物を含む請求項1~9のいずれか一項に記載の感光性樹脂組成物。
- 前記(B)エチレン性二重結合を有する化合物は、炭素数3以上のアルキレンオキシド構造を含む請求項1~10のいずれか一項に記載の感光性樹脂組成物。
- 前記第1のレーザー光の中心波長が350nm以上380nm以下であり、前記第2のレーザー光の中心波長が400nm以上410nm以下である請求項1~11のいずれか一項に記載の感光性樹脂組成物。
- 請求項1~12のいずれか一項に記載の感光性樹脂組成物を、中心波長390nm未満の第1のレーザー光と、中心波長390nm以上の第2のレーザー光とで露光することを含む感光性樹脂硬化物の製造方法。
- 前記第1のレーザー光の中心波長が350nm以上380nm以下であり、前記第2のレーザー光の中心波長が400nm以上410nm以下である請求項13に記載の感光性樹脂硬化物の製造方法。
- (A)アルカリ可溶性高分子、
(B)エチレン性二重結合を有する化合物、及び
(C)光重合開始剤を含み、
前記(C)光重合開始剤がアントラセン及び/又はアントラセン誘導体を含む感光性樹脂組成物を、中心波長390nm未満の第1のレーザー光と、中心波長390nm以上の第2のレーザー光とで露光する露光工程と、
露光された感光性樹脂組成物を現像する現像工程と、を含むレジストパターンの製造方法。 - 前記露光工程の前記第1のレーザー光の中心波長が350nm以上380nm以下であり、前記第2のレーザー光の中心波長が400nm以上410nm以下である請求項15に記載のレジストパターンの製造方法。
- 請求項15又は16に記載の方法により製造されたレジストパターンを有する基板に対してエッチング又はめっきを施すことにより回路基板を形成する、回路基板の製造方法。
- (A)アルカリ可溶性高分子、(B)エチレン性二重結合を有する化合物、及び(C)光重合開始剤を含み、
前記(C)光重合開始剤はハロゲン原子を有するアントラセン誘導体を含む、感光性樹脂組成物。 - 前記(C)光重合開始剤は9,10-ジアルコキシアントラセンのハロゲン置換体を含む、請求項18に記載の感光性樹脂組成物。
- 前記(C)光重合開始剤は、9,10-ジアルコキシアントラセンの9位及び/又は10位のアルコキシ基が1つ以上のハロゲンで修飾されている化合物を含む、請求項19に記載の感光性樹脂組成物。
- 前記(C)光重合開始剤は、アントラセン骨格に直接結合したハロゲン原子を有する化合物を含む、請求項18に記載の感光性樹脂組成物。
- 請求項18~21のいずれか一項に記載の感光性樹脂組成物を中心波長390nm未満の第1のレーザー光と、中心波長390nm以上の第2のレーザー光とで露光する露光工程と、
露光された感光性樹脂組成物を現像する現像工程と、を含むレジストパターンの製造方法。 - 中心波長390nm未満の第1のレーザー光と、中心波長390nm以上の第2のレーザー光とで露光して樹脂硬化物を得るための感光性樹脂組成物であって、
前記感光性樹脂組成物は、(A)アルカリ可溶性高分子、(B)エチレン性二重結合を有する化合物、及び(C)光重合開始剤を含み、
前記(A)アルカリ可溶性高分子における芳香族基含有コモノマーの共重合比率が、40質量%以上である感光性樹脂組成物。 - 前記(B)エチレン性二重結合を有する化合物として、2官能のエチレン性二重結合を有し、かつ1モル以上15モル以下のエチレンオキサイド構造を有する化合物を、感光性樹脂組成物全体の固形分に対し5質量%以上含有する請求項23に記載の感光性樹脂組成物。
- 請求項23又は24に記載の感光性樹脂組成物を中心波長390nm未満の第1のレーザー光と中心波長390nm以上の第2のレーザー光とで露光する露光工程と、
露光された感光性樹脂組成物を現像する現像工程と、を含むレジストパターンの製造方法。
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TWI830425B (zh) * | 2021-10-25 | 2024-01-21 | 日商旭化成股份有限公司 | 感光性元件、及光阻圖案之形成方法 |
TWI832690B (zh) * | 2023-02-03 | 2024-02-11 | 南亞塑膠工業股份有限公司 | 光阻液及其製造方法 |
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KR20190104639A (ko) | 2019-09-10 |
TWI677757B (zh) | 2019-11-21 |
KR102500912B1 (ko) | 2023-02-16 |
CN110446976B (zh) | 2023-03-24 |
JP6865811B2 (ja) | 2021-04-28 |
JPWO2018159629A1 (ja) | 2019-08-08 |
KR102406751B1 (ko) | 2022-06-08 |
JP2020064318A (ja) | 2020-04-23 |
CN110446976A (zh) | 2019-11-12 |
MY197134A (en) | 2023-05-26 |
CN116300314A (zh) | 2023-06-23 |
JP6750088B2 (ja) | 2020-09-02 |
KR20220078729A (ko) | 2022-06-10 |
TW201835683A (zh) | 2018-10-01 |
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