WO2020071437A1 - 感光性樹脂組成物、パターン硬化物の製造方法、硬化物、層間絶縁膜、カバーコート層、表面保護膜及び電子部品 - Google Patents
感光性樹脂組成物、パターン硬化物の製造方法、硬化物、層間絶縁膜、カバーコート層、表面保護膜及び電子部品Info
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- WO2020071437A1 WO2020071437A1 PCT/JP2019/038959 JP2019038959W WO2020071437A1 WO 2020071437 A1 WO2020071437 A1 WO 2020071437A1 JP 2019038959 W JP2019038959 W JP 2019038959W WO 2020071437 A1 WO2020071437 A1 WO 2020071437A1
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- photosensitive resin
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- resin composition
- formula
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- 0 CCC(CCCCC(C)C*C)C(C)(CCC1)C1C=C Chemical compound CCC(CCCCC(C)C*C)C(C)(CCC1)C1C=C 0.000 description 2
- LPSXSORODABQKT-UHFFFAOYSA-N C(C1)CC2C1C1CC2CC1 Chemical compound C(C1)CC2C1C1CC2CC1 LPSXSORODABQKT-UHFFFAOYSA-N 0.000 description 1
- FGDRHQXIHLFUAR-UHFFFAOYSA-N C=CC(OCCC1C2C(C3)C(CCOC(C=C)=O)CC3C2CC1)=O Chemical compound C=CC(OCCC1C2C(C3)C(CCOC(C=C)=O)CC3C2CC1)=O FGDRHQXIHLFUAR-UHFFFAOYSA-N 0.000 description 1
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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
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/11—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having cover layers or intermediate layers, e.g. subbing layers
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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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- 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
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
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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
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/08—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated side groups
- C08F290/14—Polymers provided for in subclass C08G
- C08F290/145—Polyamides; Polyesteramides; Polyimides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
- C08G73/12—Unsaturated polyimide precursors
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/028—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with photosensitivity-increasing substances, e.g. photoinitiators
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/028—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with photosensitivity-increasing substances, e.g. photoinitiators
- G03F7/031—Organic compounds not covered by group G03F7/029
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- 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
- G03F7/037—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders the binders being polyamides or polyimides
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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
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
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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
- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/30—Imagewise removal using liquid means
- G03F7/32—Liquid compositions therefor, e.g. developers
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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
- G03F7/40—Treatment after imagewise removal, e.g. baking
Definitions
- the present invention relates to a photosensitive resin composition, a method for producing a cured pattern, a cured product, an interlayer insulating film, a cover coat layer, a surface protective film, and an electronic component.
- a multi-die fan-out wafer-level package (Multi-die Fanout Wafer Level Packaging) is a package that collectively seals a plurality of dies in one package, and has been conventionally proposed. It has attracted a great deal of attention because it can be expected to have lower cost and higher performance than conventional fan-out wafer level packages (where one die is encapsulated in one package).
- a resin composition a resin composition containing a polyimide precursor is disclosed (for example, see Patent Document 3).
- An object of the present invention is to provide a photosensitive resin composition having excellent storage stability, which can form a cured product having excellent mechanical properties even at a low temperature curing of 230 ° C. or lower, a method for producing a pattern cured product, a cured product, and an interlayer.
- An object of the present invention is to provide an insulating film, a cover coat layer, a surface protective film, and an electronic component.
- the following photosensitive resin composition and the like are provided.
- A a polyimide precursor having a polymerizable unsaturated bond
- B a polymerizable monomer
- C a photopolymerization initiator
- D a cyclization catalyst
- E a solvent
- X 1 is a tetravalent group having one or more aromatic groups, and the —COOR 1 group and the —CONH— group are located at ortho positions to each other, and the —COOR 2 group and the —CO And the groups are at ortho positions to each other, Y 1 is a divalent aromatic group, R 1 and R 2 are each independently a hydrogen atom, a group represented by the following formula (2), or a carbon number (1-4) wherein at least one of R 1 and R 2 is a group represented by the formula (2).)
- R 3 to R 5 are each independently a hydrogen atom or an aliphatic hydrocarbon group having 1 to 3 carbon atoms, and m is an integer of 1 to 10.) 3.
- the component (D) comprises N-phenyldiethanolamine, N-methylaniline, N-ethylaniline, N, N-dimethylaniline, N-phenylethanolamine, 4-phenylmorpholine, and 2,2 ′-(4-methyl 3.
- the photosensitive resin composition according to 1 or 2 which is at least one selected from the group consisting of (phenylimino) diethanol.
- R 31A to R 33A each independently represent a hydrogen atom, a monovalent aliphatic hydrocarbon group, a monovalent aliphatic hydrocarbon group having a hydroxy group, or a monovalent aromatic group.
- R 31A to R 33A is a monovalent aromatic group.
- R 31A to R 33A may form a ring with adjacent groups. 5.
- R 11A is an alkyl group having 1 to 12 carbon atoms
- a1 is an integer of 0 to 5.
- R 12A is a hydrogen atom or an alkyl group having 1 to 12 carbon atoms.
- R 13A And R 14A each independently represent a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, a phenyl group or a tolyl group, and when a1 is an integer of 2 or more, R 11A may be the same or different. .)
- R 21A is an alkyl group having 1 to 12 carbon atoms
- R 22A and R 23A are each independently a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms.
- R 21A may be the same or different. May be.) 6.
- R 6 and R 7 are each independently an aliphatic hydrocarbon group having 1 to 4 carbon atoms or a group represented by the following formula (4).
- N1 is 0 or 1
- N2 is an integer of 0 to 2
- n1 + n2 is 1 or more.
- At least one of n1 R 6 and n2 R 7 is a group represented by the following formula (4).
- R 9 to R 11 are each independently a hydrogen atom or an aliphatic hydrocarbon group having 1 to 3 carbon atoms, and 1 is an integer of 0 to 10.
- 14. a step of applying the photosensitive resin composition according to any one of 1 to 13 on a substrate and drying to form a photosensitive resin film; Pattern-exposing the photosensitive resin film to obtain a resin film; A step of developing the resin film after the pattern exposure using an organic solvent to obtain a pattern resin film, Heat treating the pattern resin film. 15. 15.
- An electronic component comprising the interlayer insulating film, the cover coat layer, or the surface protective film according to 19.18.
- a photosensitive resin composition having excellent storage stability that can form a cured product having excellent mechanical properties, a method for producing a pattern cured product, a cured product, and an interlayer
- An insulating film, a cover coat layer, a surface protective film, and an electronic component can be provided.
- a or B may include either one of A and B, and may include both.
- the term “step” is used not only for an independent step but also for the case where the intended action of the step is achieved even if it cannot be clearly distinguished from other steps. included.
- the numerical range indicated by using “to” indicates a range including the numerical values described before and after “to” as the minimum value and the maximum value, respectively.
- the content of each component in the composition if there are a plurality of substances corresponding to each component in the composition, unless otherwise specified, the total of the plurality of substances present in the composition Means quantity.
- the exemplified materials may be used alone or in combination of two or more unless otherwise specified.
- the “(meth) acryl group” in the present specification means “acryl group” and “methacryl group”.
- the photosensitive resin composition of the present invention comprises (A) a polyimide precursor having a polymerizable unsaturated bond (hereinafter also referred to as “component (A)”), (B) a polymerizable monomer (also referred to as “crosslinking agent”). (Hereinafter also referred to as “(B) component”), (C) a photopolymerization initiator (hereinafter also referred to as “(C) component”), and (D) a cyclization catalyst (hereinafter “(D) component). ) Component), and (E) a solvent (hereinafter, also referred to as “component (E)”).
- a cured product having excellent mechanical properties can be formed even at a low temperature of 230 ° C. or lower. Further, storage stability can be improved. As an optional effect, a cured product having an excellent cyclization rate can be formed even at a low temperature of 230 ° C. or lower. As an optional effect, the sensitivity can be improved.
- the photosensitive resin composition of the present invention is preferably a negative photosensitive resin composition.
- the photosensitive resin composition of the present invention is preferably a material for electronic components.
- the component (A) is not particularly limited, but is preferably a polyimide precursor which has a high transmittance when i-line is used as a light source at the time of patterning and shows high cured product properties even at a low temperature of 230 ° C or lower.
- Examples of the polymerizable unsaturated bond include a carbon-carbon double bond.
- the component (A) is preferably a polyimide precursor having a structural unit represented by the following formula (1).
- the content of the structural unit represented by the formula (1) is preferably at least 50 mol%, more preferably at least 80 mol%, and preferably at least 90 mol%, based on all the constituent units of the component (A). More preferred.
- the upper limit is not particularly limited, and may be 100 mol%.
- X 1 is a tetravalent group having one or more aromatic groups, and the —COOR 1 group and the —CONH— group are located at ortho positions to each other, and the —COOR 2 group and the —CO And the groups are at ortho positions to each other, Y 1 is a divalent aromatic group, R 1 and R 2 are each independently a hydrogen atom, a group represented by the following formula (2), or a carbon number (1-4) wherein at least one of R 1 and R 2 is a group represented by the formula (2).
- R 3 to R 5 are each independently a hydrogen atom or an aliphatic hydrocarbon group having 1 to 3 carbon atoms, and m is an integer of 1 to 10 (preferably an integer of 2 to 5) , More preferably 2 or 3).
- the aromatic group may be an aromatic hydrocarbon group, It may be a group heterocyclic group. Aromatic hydrocarbon groups are preferred.
- Examples of the aromatic hydrocarbon group represented by X 1 in the formula (1) include a divalent to tetravalent (divalent, trivalent, or tetravalent) group formed from a benzene ring, and a divalent to tetravalent group formed from naphthalene. And divalent to tetravalent groups formed from perylene.
- Examples of the tetravalent group having one or more aromatic groups represented by X 1 in the formula (1) include, but are not limited to, a tetravalent group represented by the following formula (6).
- X and Y each independently represent a divalent group or a single bond that is not conjugated to a benzene ring to which they are bonded.
- Z is an ether group (—O—) or a sulfide group (—S -) (Preferably -O-).
- the divalent group that is not conjugated to the benzene ring to which each of X and Y is bonded is —O—, —S—, a methylene group, a bis (trifluoromethyl) methylene group, or a difluoromethylene group. And more preferably -O-.
- the divalent aromatic group of Y 1 in the formula (1) may be a divalent aromatic hydrocarbon group or a divalent aromatic heterocyclic group. Divalent aromatic hydrocarbon groups are preferred.
- Examples of the divalent aromatic hydrocarbon group represented by Y 1 in the formula (1) include, but are not limited to, a group represented by the following formula (7).
- R 12 to R 19 are each independently a hydrogen atom, a monovalent aliphatic hydrocarbon group or a monovalent organic group having a halogen atom.
- Examples of the monovalent aliphatic hydrocarbon group (preferably having 1 to 10 carbon atoms, more preferably having 1 to 6 carbon atoms) represented by R 12 to R 19 in the formula (7) include a methyl group.
- R 12 and R 15 to R 19 may be a hydrogen atom
- R 13 and R 14 may be a monovalent aliphatic hydrocarbon group.
- the monovalent organic group having a halogen atom (preferably a fluorine atom) represented by R 12 to R 19 in the formula (7) is a monovalent aliphatic hydrocarbon group having a halogen atom (preferably having 1 to 10 carbon atoms, It preferably has 1 to 6 carbon atoms, and examples thereof include a trifluoromethyl group.
- Examples of the aliphatic hydrocarbon group having 1 to 4 (preferably 1 or 2) carbon atoms for R 1 and R 2 in the formula (1) include a methyl group, an ethyl group, an n-propyl group, a 2-propyl group, and an n- Butyl group and the like.
- At least one of R 1 and R 2 in the formula (1) is a group represented by the formula (2), and both are preferably groups represented by the formula (2).
- Examples of the aliphatic hydrocarbon group having 1 to 3 (preferably 1 or 2) carbon atoms represented by R 3 to R 5 in the formula (2) include a methyl group, an ethyl group, an n-propyl group, and a 2-propyl group. Can be A methyl group is preferred.
- the polyimide precursor having the structural unit represented by the formula (1) is, for example, a tetracarboxylic dianhydride represented by the following formula (8) and a diamino compound represented by the following formula (9):
- a tetracarboxylic dianhydride represented by the following formula (8) and a diamino compound represented by the following formula (9) By reacting in an organic solvent such as -methyl-2-pyrrolidone to obtain a polyamic acid, adding a compound represented by the following formula (10), and reacting in an organic solvent to partially introduce an ester group.
- the tetracarboxylic dianhydride represented by the formula (8) and the diamino compound represented by the formula (9) may be used alone or in a combination of two or more.
- X 1 is a group corresponding to X 1 of the formula (1).
- R is a group represented by the above formula (2).
- the component (A) may have a structural unit other than the structural unit represented by the formula (1).
- Examples of the structural unit other than the structural unit represented by Formula (1) include a structural unit represented by Formula (11).
- X 2 is a tetravalent group having one or more aromatic groups
- -COOR 51 group and -CONH- group are at ortho positions to each other
- -COOR 52 group and -COOR Y 2 is a divalent aromatic group
- R 51 and R 52 are each independently a hydrogen atom or an aliphatic hydrocarbon group having 1 to 4 carbon atoms.
- Examples of the tetravalent group having one or more aromatic groups of X 2 in the formula (11) include the same as the tetravalent group having one or more aromatic groups of X 1 in the formula (1).
- Examples of the divalent aromatic group of Y 2 in the formula (11) include the same as the divalent aromatic group of Y 1 in the formula (1).
- Examples of the aliphatic hydrocarbon group having 1 to 4 carbon atoms represented by R 51 and R 52 in the formula (11) include the same as the aliphatic hydrocarbon groups having 1 to 4 carbon atoms represented by R 1 and R 2 .
- the structural unit other than the structural unit represented by the formula (1) may be used alone or in combination of two or more.
- the content of the structural unit other than the structural unit represented by the formula (1) is preferably less than 50 mol% with respect to all the constituent units of the component (A).
- the ratio of the carboxy group esterified with the group represented by the formula (2) to all carboxy groups and all carboxy esters is preferably 50 mol% or more, and 60 to 100 mol%. Mol% is more preferable, and 70 to 90 mol% is still more preferable.
- the molecular weight of the component (A) is not particularly limited, but is preferably 10,000 to 200,000 in number average molecular weight.
- the number average molecular weight can be measured, for example, by a gel permeation chromatography method, and can be determined by conversion using a standard polystyrene calibration curve.
- the component (B) may have a group (preferably two or more) containing a polymerizable unsaturated double bond (preferably, a (meth) acryl group because it can be polymerized by a photopolymerization initiator).
- a polymerizable unsaturated double bond preferably, a (meth) acryl group because it can be polymerized by a photopolymerization initiator.
- the component (B) is preferably a polymerizable monomer having a group containing two or more polymerizable unsaturated double bonds. In order to improve the crosslink density and photosensitivity and to suppress the swelling of the pattern after development, it is preferable to have a few groups containing a polymerizable unsaturated double bond.
- the component (B) may contain a polymerizable monomer having a functional group other than a group containing a polymerizable unsaturated double bond.
- the functional group include a cyclic ether group such as an epoxy group and an oxetane group.
- the component (B) preferably contains a polymerizable monomer having an aliphatic cyclic skeleton (preferably having 4 to 15 carbon atoms, more preferably 5 to 12 carbon atoms).
- a polymerizable monomer having an aliphatic cyclic skeleton preferably having 4 to 15 carbon atoms, more preferably 5 to 12 carbon atoms.
- the component (B) preferably contains a polymerizable monomer represented by the following formula (3).
- R 6 and R 7 are each independently an aliphatic hydrocarbon group having 1 to 4 carbon atoms or a group represented by the following formula (4).
- N1 is 0 or 1
- N2 is an integer of 0 to 2
- n1 + n2 is 1 or more (preferably 2 or 3.)
- At least one (preferably 2 or 3) of n1 R 6 and n2 R 7 is It is a group represented by the formula (4).
- the two R 7 may be the same or different.
- R 9 to R 11 are each independently a hydrogen atom or an aliphatic hydrocarbon group having 1 to 3 carbon atoms, and 1 is an integer of 0 to 10 (preferably 0, 1 or 2 ).)
- the component (B) contains a polymerizable monomer represented by the following formula (5).
- component (B) for example, the following polymerizable monomers may be used.
- R 21 to R 24 are each independently an aliphatic hydrocarbon group having 1 to 4 carbon atoms or a group represented by the above formula (4).
- n3 is an integer of 1 to 3 (preferably 2 or 3).
- n4 is an integer of 1 to 3 (preferably 2 or 3).
- n5 is 0 or 1
- n6 is 0 or 1.
- n5 + n6 is 1 or more (preferably 2).
- two or more R 21 When two or more R 21 are present, two or more R 21 may be the same or different. When two or more R 22 are present, two or more R 22 may be the same or different.
- At least one (preferably 2 or 3) of the n3 R 21 is a group represented by the above formula (4).
- At least one (preferably 2 or 3) of the n4 R 22 is a group represented by the above formula (4).
- n5 or at least one of R 23 and n6 amino R 24 (preferably 2) is a group represented by the above formula (4).
- Examples of the aliphatic hydrocarbon group having 1 to 4 carbon atoms represented by R 6 and R 7 in the formula (3) and R 21 to R 24 in the formula (12) include a carbon atom having 1 carbon atom represented by R 1 and R 2 in the formula (1). And the same as the aliphatic hydrocarbon groups (1) to (4).
- the aliphatic hydrocarbon group having 1 to 3 carbon atoms represented by R 9 to R 11 in the formula (4) is the same as the aliphatic hydrocarbon group having 1 to 3 carbon atoms represented by R 3 to R 5 in the formula (2). Things.
- (B) component may contain a polymerizable monomer other than the polymerizable monomer having an aliphatic cyclic skeleton. As a result, a cured product having good mechanical properties can be obtained.
- Examples of the polymerizable monomer other than the polymerizable monomer having an aliphatic cyclic skeleton include, for example, diethylene glycol diacrylate, triethylene glycol diacrylate, tetraethylene glycol diacrylate, diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, and tetraethylene glycol dimethacrylate.
- the component (B) may be used alone or in combination of two or more.
- the component (B) preferably contains a polymerizable monomer having an aliphatic cyclic skeleton and a polymerizable monomer other than the polymerizable monomer having an aliphatic cyclic skeleton from the viewpoint of obtaining good mechanical properties and photosensitive properties.
- a polymerizable monomer having an aliphatic cyclic skeleton and a polymerizable monomer other than the polymerizable monomer having an aliphatic cyclic skeleton are contained, the content of the polymerizable monomer having an aliphatic cyclic skeleton is set to 100 parts by mass of the component (A). On the other hand, 1 to 40 parts by mass is preferable.
- the amount is more preferably 5 to 35 parts by mass.
- the content of the polymerizable monomer other than the polymerizable monomer having an aliphatic cyclic skeleton is preferably from 1 to 20 parts by mass based on 100 parts by mass of the component (A). From the viewpoint of improving the hydrophobicity of the cured product, the amount is more preferably 5 to 15 parts by mass.
- the content of the component (B) is preferably 1 to 50 parts by mass based on 100 parts by mass of the component (A). From the viewpoint of improving the hydrophobicity of the cured product, the amount is more preferably 3 to 50 parts by mass, and still more preferably 5 to 40 parts by mass. When the content is within the above range, a practical relief pattern is easily obtained, and residues after development of the unexposed portions are easily suppressed.
- component (C) examples include benzophenone derivatives such as benzophenone, methyl o-benzoylbenzoate, 4-benzoyl-4′-methyldiphenylketone, dibenzylketone, and fluorenone; Acetophenone derivatives such as 2,2′-diethoxyacetophenone, 2-hydroxy-2-methylpropiophenone and 1-hydroxycyclohexylphenyl ketone; Thioxanthone derivatives such as thioxanthone, 2-methylthioxanthone, 2-isopropylthioxanthone and diethylthioxanthone; Benzyl derivatives such as benzyl, benzyldimethyl ketal, benzyl- ⁇ -methoxyethyl acetal, Benzoin derivatives such as benzoin and benzoin methyl ether, and 1-phenyl-1,2-butanedione-2- (O-methoxycarbonyl) oxime, 1-phenyl
- oxime esters are preferred in terms of photosensitivity.
- the component (C) preferably contains (C1) a compound represented by the following formula (15) (hereinafter, also referred to as “(C1) component”).
- the component (C1) preferably has a higher sensitivity to actinic rays than the component (C2) described below, and is preferably a highly sensitive photosensitizer.
- R 11A is an alkyl group having 1 to 12 carbon atoms, and a1 is an integer of 0 to 5.
- R 12A is a hydrogen atom or an alkyl group having 1 to 12 carbon atoms.
- R 13A and R 14A each independently represent a hydrogen atom, an alkyl group having 1 to 12 (preferably 1 to 4) carbon atoms, a phenyl group or a tolyl group.
- R 11A may be the same or different.
- R 11A is preferably an alkyl group having 1 to 4 carbon atoms, and more preferably a methyl group. a1 is preferably 1.
- R 12A is preferably an alkyl group having 1 to 4 carbon atoms, and more preferably an ethyl group.
- R 13A and R 14A are preferably each independently an alkyl group having 1 to 4 carbon atoms, and more preferably a methyl group.
- the compound represented by the formula (15) includes, for example, a compound represented by the following formula (15A), and is available as “IRGACURE OXE 02” manufactured by BASF Japan Ltd.
- the component (C) preferably contains (C2) a compound represented by the following formula (16) (hereinafter, also referred to as “(C2) component”).
- the component (C2) preferably has lower sensitivity to actinic rays than the component (C1), and is preferably a photosensitive agent having a standard sensitivity.
- R 21A is an alkyl group having 1 to 12 carbon atoms
- R 22A and R 23A are each independently a hydrogen atom or an alkyl group having 1 to 12 carbon atoms (preferably having 1 to 4 carbon atoms).
- c1 is an integer of 2 or more, R 21A may be the same or different.
- R 22A is preferably an alkyl group having 1 to 4 carbon atoms, and more preferably a methyl group.
- R 23A is preferably an alkoxy group having 1 to 12 carbon atoms, more preferably an alkoxy group having 1 to 4 carbon atoms, even more preferably a methoxy group or an ethoxy group.
- Examples of the compound represented by the formula (16) include a compound represented by the following formula (16A), which is available as “G-1820 (PDO)” manufactured by Lambson.
- the component (C) may be used alone or in combination of two or more.
- the component (C) preferably contains at least one selected from the group consisting of the component (C1) and the component (C2). Further, the component (C) preferably contains the component (C1) and the component (C2).
- the content of the component (C) is preferably 0.1 to 20 parts by mass, more preferably 0.1 to 10 parts by mass, and further preferably 0.1 to 10 parts by mass, based on 100 parts by mass of the component (A). 5 parts by mass. When it is in the above range, photocrosslinking tends to be uniform in the film thickness direction, and a practical relief pattern is easily obtained.
- the content of the component (C1) is usually 0.05 to 5.0 parts by mass, preferably 0.07 to 2.0 parts by mass, per 100 parts by mass of the component (A).
- the amount is 5 parts by mass, more preferably 0.09 to 1.0 part by mass.
- the content of the component (C2) is usually from 0.5 to 15.0 parts by mass, preferably from 1.0 to 15.0 parts by mass, per 100 parts by mass of the component (A). 0 parts by mass.
- the content of the component (C1) is 0.05 to 5.0 parts by mass with respect to 100 parts by mass of the component (A), and the component (C2) Is preferably 0.5 to 15.0 parts by mass with respect to 100 parts by mass of the component (A).
- the mass ratio of the content of the component (C1) to the content of the component (C2) is preferably from 1: 2 to 1:15, more preferably from 1: 3 to 1:15. 1:10.
- the photosensitive resin composition of the present invention contains (D) a cyclization catalyst.
- the component (D) includes 2- (methylphenylamino) ethanol, 2- (ethylanilino) ethanol, N-phenyldiethanolamine, N-methylaniline, N-ethylaniline, N, N-dimethylaniline, N-phenylethanolamine, It is preferably at least one selected from the group consisting of 4-phenylmorpholine and 2,2 '-(4-methylphenylimino) diethanol, and N-phenyldiethanolamine, N-methylaniline, N-ethylaniline, , N-dimethylaniline, N-phenylethanolamine, 4-phenylmorpholine and 2,2 '-(4-methylphenylimino) diethanol are more preferably at least one selected from the group consisting of:
- the component (D) preferably contains a compound represented by the following formula (17).
- R 31A to R 33A each independently represent a hydrogen atom, a monovalent aliphatic hydrocarbon group, a monovalent aliphatic hydrocarbon group having a hydroxy group, or a monovalent aromatic group. , and the at least one (preferably one) monovalent aromatic group .R 31A ⁇ R 33A ring adjacent groups (e.g., substituents (e.g., methyl group R 31A ⁇ R 33A , A phenyl group) may be formed.)
- At least one of R 31A to R 33A is a monovalent aliphatic hydrocarbon group, a monovalent aliphatic hydrocarbon group having a hydroxy group, or a monovalent aromatic group.
- Examples of the monovalent aliphatic hydrocarbon group (preferably having 1 to 10 carbon atoms, more preferably 1 to 6 carbon atoms) represented by R 31A to R 33A in the formula (17) include a methyl group and an ethyl group.
- the monovalent aliphatic hydrocarbon group having a hydroxy group represented by R 31A to R 33A in the formula (17) one or more (preferably 1 to 3) is added to the monovalent aliphatic hydrocarbon group represented by R 31A to R 33A.
- Specific examples include a methylol group and a hydroxyethyl group. Hydroxyethyl groups are preferred.
- the monovalent aromatic group represented by R 31A to R 33A in the formula (17) may be a monovalent aromatic hydrocarbon group (preferably having 6 to 12 carbon atoms, more preferably 6 to 10 carbon atoms). It may be a valent aromatic heterocyclic group. Monovalent aromatic hydrocarbon groups are preferred. Examples of the monovalent aromatic hydrocarbon group include a phenyl group and a naphthyl group.
- the monovalent aromatic groups of R 31A to R 33A in the formula (17) may have a substituent. The substituent, a monovalent aliphatic having hydroxy group R 31A ⁇ R 33A monovalent aliphatic hydrocarbon group R 31A ⁇ R 33A of the aforementioned formula (17), and the above equation (17) The same thing as a hydrocarbon group is mentioned.
- the component (D) one type may be used alone, or two or more types may be used in combination.
- the content of the component (D) is preferably 0.1 to 20 parts by mass with respect to 100 parts by mass of the component (A) from the viewpoint of improving the imidation ratio and sensitivity. From the viewpoint of storage stability, the amount is more preferably 0.3 to 15 parts by mass, and still more preferably 0.5 to 10 parts by mass.
- the photosensitive resin composition of the present invention contains (E) a solvent.
- the component (E) includes N-methyl-2-pyrrolidone, ⁇ -butyrolactone, ethyl lactate, propylene glycol monomethyl ether acetate, benzyl acetate, n-butyl acetate, ethoxyethyl propionate, 3-methylmethoxypropionate, N, N-dimethylformamide, N, N-dimethylacetamide, dimethylsulfoxide, hexamethylphosphorylamide, tetramethylene sulfone, cyclohexanone, cyclopentanone, diethyl ketone, diisobutyl ketone, methyl amyl ketone, N-dimethyl morpholine and the like.
- N-methyl-2-pyrrolidone, ⁇ -butyrolactone, ethyl lactate, propylene glycol monomethyl ether acetate, N, N-dimethylformamide are preferred from the viewpoint of excellent solubility of each component and coatability in forming a photosensitive resin film.
- N, N-Dimethylacetamide is preferably used.
- component (E) a compound represented by the following formula (21) may be used.
- R 41 to R 43 are each independently an alkyl group having 1 to 10 carbon atoms.
- examples of the alkyl group having 1 to 10 (preferably 1 to 3, more preferably 1 or 3) carbon atoms of R 41 to R 43 include a methyl group, an ethyl group, an n-propyl group, and an isopropyl group. , N-butyl, t-butyl, pentyl, hexyl, heptyl, octyl and the like.
- the compound represented by the formula (21) is preferably 3-methoxy-N, N-dimethylpropanamide (for example, trade name “KJCMPA-100” (manufactured by KJ Chemicals Corporation)).
- the component (E) one type may be used alone, or two or more types may be used in combination.
- the content of the component (E) is not particularly limited, but is generally 50 to 1000 parts by mass based on 100 parts by mass of the component (A).
- the photosensitive resin composition of the present invention may further contain (F) a thermal polymerization initiator (hereinafter, also referred to as “component (F)”) from the viewpoint of accelerating the polymerization reaction.
- component (F) is not decomposed by heating (drying) for removing a solvent during film formation, but is decomposed by heating at the time of curing to generate radicals.
- Compounds that promote the polymerization reaction of component (B) are preferred.
- the component (F) is preferably a compound having a decomposition point of 110 ° C to 200 ° C, and more preferably a compound having a decomposition point of 110 ° C to 175 ° C from the viewpoint of accelerating the polymerization reaction at a lower temperature.
- ketone peroxides such as methyl ethyl ketone peroxide, 1,1-di (t-hexylperoxy) -3,3,5-trimethylcyclohexane, 1,1-di (t-hexylperoxy) cyclohexane, Peroxy ketals such as 1-di (t-butylperoxy) cyclohexane, hydroperoxides such as 1,1,3,3-tetramethylbutyl hydroperoxide, cumene hydroperoxide, p-menthane hydroperoxide, dicumyl peroxide, dicumyl peroxide Dialkyl peroxides such as -t-butyl peroxide and the like, diacyl peroxides such as dilauroyl peroxide and dibenzoyl peroxide, di (4-t-butylcyclohexyl) peroxydicarbonate, di (2-ethylhexyl) peroxydicarbon
- the content of the component (F) is preferably 0.1 to 20 parts by mass with respect to 100 parts by mass of the component (A), and is 0 to ensure good flux resistance. From 2 to 20 parts by mass, more preferably from 0.3 to 10 parts by mass, from the viewpoint of suppressing the decrease in solubility due to decomposition during drying.
- the photosensitive resin composition of the present invention may further contain an antioxidant.
- an antioxidant oxygen radicals and peroxide radicals generated during high-temperature storage or reflow treatment can be supplemented, and a decrease in adhesion (adhesion) can be further suppressed. Further, oxidation of the electrode during the insulation reliability test can be suppressed, and diffusion from the electrode to the resin film or the pattern resin film can be suppressed.
- antioxidants include N, N'-bis [2- [2- (3,5-di-tert-butyl-4-hydroxyphenyl) ethylcarbonyloxy] ethyl] oxamide, N, N'-bis-3 -(3,5-di-tert-butyl-4'-hydroxyphenyl) propionylhexamethylenediamine, 1,3,5-tris (3-hydroxy-4-tert-butyl-2,6-dimethylbenzyl) -1 3,5-triazine-2,4,6 (1H, 3H, 5H) -trione, 2,6-di-t-butyl-4-methylphenol, 2,5-di-t-butyl-hydroquinone, octadecyl-3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate 4,4'-methylenebis (2,6-di-t-butylphenol), 4,4'-thio-bis (3-methyl-6-t-
- the antioxidant may be used alone or in combination of two or more.
- the content of the antioxidant is preferably from 0.1 to 20 parts by mass, more preferably from 0.1 to 10 parts by mass, per 100 parts by mass of the component (A). Preferably it is 0.1 to 5 parts by mass.
- the photosensitive resin composition of the present invention may further contain a coupling agent (adhesion aid), a surfactant or a leveling agent, a rust inhibitor, a polymerization inhibitor and the like.
- the coupling agent reacts with the component (A) in the heat treatment after development to crosslink, or the coupling agent itself is polymerized in the heat treatment step. Thereby, the adhesiveness between the obtained cured product and the substrate can be further improved.
- Preferred silane coupling agents include compounds having a urea bond (—NH—CO—NH—). Thereby, even when curing is performed at a low temperature of 230 ° C. or lower, the adhesiveness to the substrate can be further improved.
- the compound represented by the following formula (13) is more preferable because it exhibits excellent adhesion when cured at a low temperature.
- R 31 and R 32 are each independently an alkyl group having 1 to 5 carbon atoms. A is an integer of 1 to 10, and b is an integer of 1 to 3.
- Specific examples of the compound represented by the formula (13) include ureidomethyltrimethoxysilane, ureidomethyltriethoxysilane, 2-ureidoethyltrimethoxysilane, 2-ureidoethyltriethoxysilane, and 3-ureidopropyltrimethoxysilane. And 3-ureidopropyltriethoxysilane, 4-ureidobutyltrimethoxysilane, 4-ureidobutyltriethoxysilane, and the like, with 3-ureidopropyltriethoxysilane being preferred.
- silane coupling agent a silane coupling agent having a hydroxy group or a glycidyl group may be used.
- silane coupling agent having a hydroxy group or a glycidyl group and a silane coupling agent having a urea bond in a molecule are used in combination, it is possible to further improve the adhesion of a cured product to a substrate during low-temperature curing.
- silane coupling agent having a hydroxy group or a glycidyl group examples include methylphenylsilanediol, ethylphenylsilanediol, n-propylphenylsilanediol, isopropylphenylsilanediol, n-butylphenylsilanediol, isobutylphenylsilanediol, and tert-silane.
- R 33 is a monovalent organic group having a hydroxy group or a glycidyl group
- R 34 and R 35 are each independently an alkyl group having 1 to 5 carbon atoms.
- An integer of 10 and d is an integer of 1 to 3.
- Examples of the compound represented by the formula (14) include hydroxymethyltrimethoxysilane, hydroxymethyltriethoxysilane, 2-hydroxyethyltrimethoxysilane, 2-hydroxyethyltriethoxysilane, 3-hydroxypropyltrimethoxysilane, Hydroxypropyltriethoxysilane, 4-hydroxybutyltrimethoxysilane, 4-hydroxybutyltriethoxysilane, glycidoxymethyltrimethoxysilane, glycidoxymethyltriethoxysilane, 2-glycidoxyethyltrimethoxysilane, 2- Glycidoxyethyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropyltriethoxysilane, 4-glycidoxybutyltrimethoxysilane, 4-glycidoxybutyl Triethoxysilane, and the like.
- the silane coupling agent having a hydroxy group or a glycidyl group preferably further contains a group having a nitrogen atom, and more preferably a silane coupling agent having an amino group or an amide bond.
- the silane coupling agent having an amino group include bis (2-hydroxymethyl) -3-aminopropyltriethoxysilane, bis (2-hydroxymethyl) -3-aminopropyltrimethoxysilane, bis (2-glycidyl) (Xymethyl) -3-aminopropyltriethoxysilane, bis (2-hydroxymethyl) -3-aminopropyltrimethoxysilane and the like.
- R 36 (CH 2 ) e —CO—NH— (CH 2 ) f —Si (OR 37 ) 3
- R 36 is a hydroxy group or a glycidyl group
- f are each independently an integer of 1 to 3
- R 37 is a methyl group, an ethyl group or a propyl group).
- the silane coupling agent may be used alone or in combination of two or more.
- the content of the silane coupling agent is preferably from 0.1 to 20 parts by mass, more preferably from 0.3 to 10 parts by mass, based on 100 parts by mass of the component (A). -10 parts by mass is more preferred.
- surfactant or the leveling agent examples include polyoxyethylene lauryl ether, polyoxyethylene stearyl ether, polyoxyethylene oleyl ether, polyoxyethylene octyl phenol ether, and the like.
- the surfactant and the leveling agent may be used alone or in a combination of two or more.
- the content of the surfactant or the leveling agent is preferably from 0.01 to 10 parts by mass, more preferably from 0.05 to 5 parts by mass, per 100 parts by mass of the component (A).
- the amount is 0.05 to 3 parts by mass.
- a rust inhibitor By including a rust inhibitor, corrosion of copper and copper alloy can be suppressed and discoloration can be prevented.
- the rust inhibitor include a triazole derivative and a tetrazole derivative.
- the rust inhibitor may be used alone or in combination of two or more.
- the content of the rust inhibitor is preferably 0.01 to 10 parts by mass, more preferably 0.1 to 5 parts by mass, and more preferably 0.5 to 5 parts by mass, per 100 parts by mass of the component (A). 3 parts by mass is more preferred.
- the polymerization inhibitor By including a polymerization inhibitor, good storage stability can be ensured.
- the polymerization inhibitor include a radical polymerization inhibitor and a radical polymerization inhibitor.
- polymerization inhibitor examples include p-methoxyphenol, diphenyl-p-benzoquinone, benzoquinone, hydroquinone, pyrogallol, phenothiazine, resorcinol, orthodinitrobenzene, paradinitrobenzene, metadinitrobenzene, phenanthraquinone, and N-phenyl-2-ene.
- examples include naphthylamine, cuperon, 2,5-toluquinone, tannic acid, parabenzylaminophenol, nitrosamines and the like.
- the polymerization inhibitor may be used alone or in combination of two or more.
- the content of the polymerization inhibitor is preferably 0 to 100 parts by mass of the component (A) from the viewpoint of storage stability of the photosensitive resin composition and heat resistance of the obtained cured product. 0.01 to 30 parts by mass, more preferably 0.01 to 10 parts by mass, even more preferably 0.05 to 5 parts by mass.
- the photosensitive resin composition of the present invention essentially comprises the components (A) to (E) and optionally the component (F), a coupling agent, a surfactant, a leveling agent, a rust inhibitor and a polymerization inhibitor. And may contain other unavoidable impurities as long as the effects of the present invention are not impaired. For example, 80% by mass or more, 90% by mass or more, 95% by mass or more, 98% by mass or more, or 100% by mass of the photosensitive resin composition of the present invention, (A) to (E) components, (A)-(F) component, or (A)-(E) component, and optionally, (F) component, coupling agent, surfactant, leveling agent, rust inhibitor and polymerization inhibitor. Good.
- the cured product of the present invention can be obtained by curing the above-described photosensitive resin composition.
- the cured product of the present invention may be used as a pattern cured product or a cured product without a pattern.
- the thickness of the cured product of the present invention is preferably 5 to 20 ⁇ m.
- a step of applying the above-described photosensitive resin composition on a substrate and drying to form a photosensitive resin film, and pattern-exposing the photosensitive resin film to form a resin film includes a step of obtaining, a step of developing the resin film after pattern exposure using an organic solvent to obtain a pattern resin film, and a step of heat-treating the pattern resin film. Thereby, a cured pattern can be obtained.
- a method for producing a cured product having no pattern includes, for example, a step of forming the above-described photosensitive resin film and a step of performing heat treatment. Further, a step of exposing may be provided.
- the substrate examples include a semiconductor substrate such as a glass substrate and a Si substrate (silicon wafer), a metal oxide insulator substrate such as a TiO 2 substrate and a SiO 2 substrate, a silicon nitride substrate, a copper substrate, and a copper alloy substrate.
- the coating method is not particularly limited, but can be performed using a spinner or the like.
- Drying can be performed using a hot plate, an oven, or the like.
- the drying temperature is preferably from 90 to 150 ° C., and more preferably from 90 to 120 ° C. from the viewpoint of ensuring the dissolution contrast.
- the drying time is preferably 30 seconds to 5 minutes. Drying may be performed two or more times. Thereby, a photosensitive resin film in which the above-described photosensitive resin composition is formed in a film shape can be obtained.
- the thickness of the photosensitive resin film is preferably 5 to 100 ⁇ m, more preferably 6 to 50 ⁇ m, and still more preferably 7 to 30 ⁇ m.
- a predetermined pattern is exposed through a photomask.
- the actinic rays to be irradiated include i-rays, ultraviolet rays such as broadband (BB), visible rays, and radiation, but i-rays are preferred.
- BB broadband
- the exposure device a parallel exposure device, a projection exposure device, a stepper, a scanner exposure device, or the like can be used.
- a patterned resin film (patterned resin film) can be obtained.
- a negative photosensitive resin composition when used, unexposed portions are removed with a developer.
- the organic solvent used as the developer a good solvent for the photosensitive resin film can be used alone, or a good solvent and a poor solvent can be appropriately mixed.
- the good solvent include N-methyl-2-pyrrolidone, N-acetyl-2-pyrrolidone, N, N-dimethylacetamide, N, N-dimethylformamide, dimethyl sulfoxide, ⁇ -butyrolactone, ⁇ -acetyl- ⁇ -butyrolactone, Cyclopentanone, cyclohexanone and the like can be mentioned.
- the poor solvent include toluene, xylene, methanol, ethanol, isopropanol, propylene glycol monomethyl ether acetate, propylene glycol monomethyl ether, and water.
- a surfactant may be added to the developer.
- the addition amount is preferably 0.01 to 10 parts by mass, more preferably 0.1 to 5 parts by mass, based on 100 parts by mass of the developer.
- the development time can be, for example, twice as long as the time until the photosensitive resin film is immersed and completely dissolved.
- the development time varies depending on the component (A) used, but is preferably from 10 seconds to 15 minutes, more preferably from 10 seconds to 5 minutes, and further preferably from 20 seconds to 5 minutes from the viewpoint of productivity.
- washing may be performed with a rinsing solution.
- a rinsing solution distilled water, methanol, ethanol, isopropanol, toluene, xylene, propylene glycol monomethyl ether acetate, propylene glycol monomethyl ether, or the like may be used alone or in a suitable mixture, or may be used in a stepwise combination. Good.
- the polyimide precursor of the component (A) undergoes a dehydration and ring closure reaction by the heat treatment step, and usually becomes a corresponding polyimide.
- the temperature of the heat treatment is preferably 250 ° C. or lower, more preferably 120 to 250 ° C., and still more preferably 230 ° C. or lower or 180 to 230 ° C. By being within the above range, damage to the substrate and the device can be suppressed small, the device can be produced with high yield, and energy saving in the process can be realized.
- the time of the heat treatment is preferably 5 hours or less, more preferably 30 minutes to 3 hours. When the content is within the above range, the crosslinking reaction or the dehydration ring-closing reaction can sufficiently proceed.
- the atmosphere for the heat treatment may be the air or an inert atmosphere such as nitrogen, but is preferably under a nitrogen atmosphere from the viewpoint of preventing oxidation of the pattern resin film.
- Examples of the apparatus used for the heat treatment include a quartz tube furnace, a hot plate, rapid thermal annealing, a vertical diffusion furnace, an infrared curing furnace, an electron beam curing furnace, and a microwave curing furnace.
- the cured product of the present invention can be used as a passivation film, a buffer coat film, an interlayer insulating film, a cover coat layer, a surface protective film, or the like.
- a highly reliable semiconductor device, multilayer wiring board, various electronic devices, laminated Electronic components such as devices (such as a multi-die fan-out wafer level package) can be manufactured.
- FIG. 1 is a manufacturing process diagram of a semiconductor device having a multilayer wiring structure as an electronic component according to an embodiment of the present invention.
- a semiconductor substrate 1 such as a Si substrate having circuit elements is covered with a protective film 2 such as a silicon oxide film except for a predetermined portion of the circuit elements, and a first conductor layer 3 is formed on the exposed circuit elements. It is formed. After that, an interlayer insulating film 4 is formed on the semiconductor substrate 1.
- a photosensitive resin layer 5 of a chlorinated rubber type, a phenol novolak type or the like is formed on the interlayer insulating film 4, and a window 6A is formed by a known photolithography technique so that a predetermined portion of the interlayer insulating film 4 is exposed.
- the interlayer insulating film 4 with the window 6A exposed is selectively etched to provide a window 6B.
- the photosensitive resin layer 5 is completely removed by using an etching solution that corrodes only the photosensitive resin layer 5 without corroding the first conductor layer 3 exposed from the window 6B.
- the second conductor layer 7 is formed by using a known photolithography technique, and is electrically connected to the first conductor layer 3.
- each layer can be formed by repeating the above steps.
- a window 6C is opened by pattern exposure using the above-mentioned photosensitive resin composition, and a surface protective film 8 is formed.
- the surface protection film 8 protects the second conductor layer 7 from external stress, ⁇ -rays and the like, and the obtained semiconductor device has excellent reliability.
- the interlayer insulating film can be formed using the photosensitive resin composition of the present invention.
- Synthesis Example 1 (Synthesis of A1) 7.07 g of 3,3 ', 4,4'-diphenylethertetracarboxylic dianhydride (ODPA) and 4.12 g of 2,2'-dimethylbiphenyl-4,4'-diamine (DMAP) were converted to N-methyl- It was dissolved in 30 g of 2-pyrrolidone (NMP) and stirred at 30 ° C. for 4 hours and then at room temperature overnight to obtain a polyamic acid. Under water cooling, 9.45 g of trifluoroacetic anhydride was added thereto, and the mixture was stirred at 45 ° C. for 3 hours, and 7.08 g of 2-hydroxyethyl methacrylate (HEMA) was added.
- ODPA 3,3 ', 4,4'-diphenylethertetracarboxylic dianhydride
- DMAP 2,2'-dimethylbiphenyl-4,4'-diamine
- the reaction solution was dropped into distilled water, the precipitate was collected by filtration, and dried under reduced pressure to obtain a polyimide precursor A1.
- the number average molecular weight was determined by gel permeation chromatography (GPC) under the following conditions in terms of standard polystyrene.
- the number average molecular weight of A1 was 40,000.
- THF tetrahydrofuran
- DMF dimethylformamide
- esterification rate of A1 (reaction rate of the carboxy group of ODPA with HEMA) was calculated by performing NMR measurement under the following conditions.
- the esterification rate was 80 mol% based on the total carboxy groups of the polyamic acid (the remaining 20 mol% was carboxy groups).
- Examples 1 to 3 and Comparative Examples 1 to 5 (Preparation of photosensitive resin composition)
- the photosensitive resin compositions of Examples 1 to 3 and Comparative Examples 1 to 5 were prepared using the components and amounts shown in Table 1.
- the compounding amounts in Table 1 are parts by mass of each component with respect to 100 parts by mass of A1.
- Thermal polymerization initiator F1 Parkmill D (manufactured by NOF CORPORATION, bis (1-phenyl-1-methylethyl) peroxide, a compound represented by the following formula F1)
- the obtained photosensitive resin composition is spin-coated on a silicon wafer using a coating device Act8 (manufactured by Tokyo Electron Limited), dried at 105 ° C. for 120 seconds, and then dried at 115 ° C. for 120 seconds to form a dried film.
- a photosensitive resin film having a thickness of 13 ⁇ m was formed.
- the development time was set to twice the time required for the obtained photosensitive resin film to be completely dissolved by immersion in cyclopentanone.
- a photosensitive resin film is prepared in the same manner as described above, and an i-line of 100 to 1100 mJ / cm 2 is applied to the obtained photosensitive resin film using an i-line stepper FPA-3000iW (manufactured by Canon Inc.). Exposure was performed by irradiating a predetermined pattern at an irradiation amount of 100 mJ / cm 2 . The exposed resin film was developed into cyclopentanone using Act8 for the above development time, and then rinsed with propylene glycol monomethyl ether acetate (PGMEA) to obtain a patterned resin film.
- PMEA propylene glycol monomethyl ether acetate
- the sensitivity was defined as the lower limit of the exposure amount at which the thickness of the obtained pattern resin film was 80% or more of the thickness of the photosensitive resin film before exposure. Table 1 shows the results.
- the IR (infrared spectroscopy) spectrum of the pattern resin film obtained by the evaluation of the sensitivity was measured under the following conditions using FT-IR IRAfinity-1S (manufactured by Shimadzu Corporation). This value is referred to as IR1.
- the IR spectrum was measured by a transmission method with a measurement range of 400 to 4000 cm ⁇ 1 and an accumulation count of 16 times.
- the measurement of the IR spectrum used a silicon wafer as a substrate. First, the substrate on which the photosensitive resin composition was not applied was measured and used as a background. Next, measurement was performed on the resin film portion of the pattern resin film using the above background, and an IR spectrum was obtained.
- the IR of the cured pattern obtained in Production 1 of the cured pattern was measured in the same manner as described above. This value is set to IR2.
- the IR of the cured pattern obtained in Production 2 of the cured pattern was measured in the same manner as described above. This value is referred to as IR3.
- the cyclization rate was determined by dividing the value obtained by subtracting IR1 from IR2 by the value obtained by subtracting IR1 from IR3 to obtain a percentage. A was 65% or more, and B was less than 65%. Table 1 shows the results.
- the above-mentioned photosensitive resin composition was spin-coated on a Si substrate at a rotation speed at which the film thickness after drying became 13 ⁇ m within 24 hours after preparation, and on a hot plate at 105 ° C. for 120 seconds at 115 ° C. For 120 seconds to form a photosensitive resin film.
- the silicon wafer was exposed by scribing a part of the film, and the height from the exposed silicon wafer surface to the film surface was measured using a needle-type profiler Dektak 150 (manufactured by Bruker). The same applies to the above, and the same applies to the following). This is referred to as film thickness 1.
- the above photosensitive resin composition was adjusted, it was allowed to stand at room temperature (25 ° C.) for 14 days. After standing, spin coating was performed on the Si substrate at the same rotation speed as when the photosensitive resin film for measuring the film thickness 1 was formed, and heated on a hot plate at 105 ° C. for 120 seconds and at 115 ° C. for 120 seconds. After drying, a photosensitive resin film was formed. The film thickness was measured as described above. This is referred to as film thickness 2. The case where the absolute value obtained by subtracting the film thickness 1 from the film thickness 2 was divided by the film thickness 1 and the percentage value was 5% or less was defined as A. The case of exceeding 5% was designated as B. Table 1 shows the results.
- the cured pattern obtained in Production 3 of the cured pattern was immersed in a 4.9% by mass aqueous hydrofluoric acid solution, and the cured product having a width of 10 mm was peeled from the wafer.
- the peeled cured product having a width of 10 mm was subjected to a tensile test using Autograph AGS-X 100N (manufactured by Shimadzu Corporation). The distance between the chucks was set to 20 mm, the tensile speed was set to 5 mm / min, and the measurement temperature was set to 18 to 25 ° C.
- the cured pattern obtained in the above-mentioned production 3 of the cured pattern was cured at 121 ° C., 100 RH (relative humidity)% and 2 atm using a PCT tester HASTEST (PC-R8D, manufactured by Hirayama Seisakusho) Treated for 100 hours.
- the cured pattern was taken out from the PCT test apparatus, the cured pattern was peeled off in the same manner as described above, a tensile test was performed, and the average elongation was determined.
- the average value of the elongation percentage was more than 50%, it was set to A, when it was more than 45% and 50% or less, it was set to B, and when it was 45% or less, it was set to C.
- Table 1 shows the results after PCT. "-" Indicates that no measurement was performed.
- the photosensitive resin composition of the present invention can be used for an interlayer insulating film, a cover coat layer, a surface protective film, and the like, and the interlayer insulating film, the cover coat layer, or the surface protective film of the present invention can be used for electronic components and the like. Can be.
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Abstract
Description
1.(A)重合性の不飽和結合を有するポリイミド前駆体、
(B)重合性モノマー、
(C)光重合開始剤、
(D)環化触媒、及び
(E)溶剤を含有する感光性樹脂組成物。
2.前記(A)成分が、下記式(1)で表される構造単位を有するポリイミド前駆体である1に記載の感光性樹脂組成物。
3.前記(D)成分が、N-フェニルジエタノールアミン、N-メチルアニリン、N-エチルアニリン、N,N-ジメチルアニリン、N-フェニルエタノールアミン、4-フェニルモルフォリン及び2,2′-(4-メチルフェニルイミノ)ジエタノールからなる群から選択される1以上である1又は2に記載の感光性樹脂組成物。
4.前記(D)成分が、下記式(17)で表される化合物を含む1又は2に記載の感光性樹脂組成物。
5.前記(C)成分が(C1)下記式(15)で表される化合物及び(C2)下記式(16)で表される化合物を含む1~4のいずれかに記載の感光性樹脂組成物。
6.前記(B)成分が、脂肪族環状骨格を有する重合性モノマーを含む1~5のいずれかに記載の感光性樹脂組成物。
7.前記(B)成分が、重合性の不飽和二重結合を含む基を有する1~6のいずれかに記載の感光性樹脂組成物。
8.前記(B)成分が、2以上の重合性の不飽和二重結合を含む基を有する重合性モノマーである7に記載の感光性樹脂組成物。
9.前記(B)成分が、下記式(3)で表される重合性モノマーを含む1~7のいずれかに記載の感光性樹脂組成物。
10.n1+n2が、2又は3である9に記載の感光性樹脂組成物。
11.前記(B)成分が、下記式(5)で表される重合性モノマーを含む1~10のいずれかに記載の感光性樹脂組成物。
13.さらに、酸化防止剤を含む1~12のいずれかに記載の感光性樹脂組成物。
14.1~13のいずれかに記載の感光性樹脂組成物を基板上に塗布、乾燥して感光性樹脂膜を形成する工程と、
前記感光性樹脂膜をパターン露光して、樹脂膜を得る工程と、
前記パターン露光後の樹脂膜を、有機溶剤を用いて、現像し、パターン樹脂膜を得る工程と、
前記パターン樹脂膜を加熱処理する工程と、を含むパターン硬化物の製造方法。
15.前記加熱処理の温度が230℃以下である14に記載のパターン硬化物の製造方法。
16.1~13のいずれかに記載の感光性樹脂組成物を硬化した硬化物。
17.パターン硬化物である16に記載の硬化物。
18.16又は17に記載の硬化物を用いて作製された層間絶縁膜、カバーコート層又は表面保護膜。
19.18に記載の層間絶縁膜、カバーコート層又は表面保護膜を含む電子部品。
「~」を用いて示された数値範囲は、「~」の前後に記載される数値をそれぞれ最小値及び最大値として含む範囲を示す。また、本明細書において組成物中の各成分の含有量は、組成物中に各成分に該当する物質が複数存在する場合、特に断らない限り、組成物中に存在する当該複数の物質の合計量を意味する。さらに、例示材料は特に断らない限り単独で用いてもよいし、2種以上を組み合わせて用いてもよい。
本明細書における「(メタ)アクリル基」とは、「アクリル基」及び「メタクリル基」を意味する。
(E)溶剤(以下、「(E)成分」ともいう。)を含有する。
また、保存安定性を向上させることができる。
また、任意の効果として、230℃以下の低温硬化であっても、環化率に優れた硬化物を形成できる。
任意の効果として、感度を向上させることができる。
式(1)で表される構造単位の含有量は、(A)成分の全構成単位に対して、50モル%以上であることが好ましく、80モル%以上がより好ましく、90モル%以上がさらに好ましい。上限は特に限定されず、100モル%でもよい。
式(8)で表されるテトラカルボン酸二無水物及び式(9)で表されるジアミノ化合物は、1種単独で用いてもよく、2種以上を組み合わせてもよい。
式(1)で表される構造単位以外の構造単位としては、式(11)で表される構造単位等が挙げられる。
式(11)のY2の2価の芳香族基は、式(1)のY1の2価の芳香族基と同様のものが挙げられる。
式(11)のR51及びR52の炭素数1~4の脂肪族炭化水素基は、R1及びR2の炭素数1~4の脂肪族炭化水素基と同様のものが挙げられる。
数平均分子量は、例えばゲルパーミエーションクロマトグラフィー法によって測定することができ、標準ポリスチレン検量線を用いて換算することによって求めることができる。
R22が2以上存在する場合、2以上のR22は同一でもよく、異なっていてもよい。
n4個のR22の少なくとも1つ(好ましくは2又は3)は、上記式(4)で表される基である。
n5個のR23及びn6個のR24の少なくとも1つ(好ましくは2)は、上記式(4)で表される基である。
脂肪族環状骨格を有する重合性モノマー及び脂肪族環状骨格を有する重合性モノマー以外の重合性モノマーを含む場合、脂肪族環状骨格を有する重合性モノマーの含有量は、(A)成分100質量部に対して、1~40質量部が好ましい。硬化物の疎水性向上の観点から、より好ましくは5~35質量部である。脂肪族環状骨格を有する重合性モノマー以外の重合性モノマーの含有量は、(A)成分100質量部に対して、1~20質量部が好ましい。硬化物の疎水性向上の観点から、より好ましくは5~15質量部である。
上記範囲内である場合、実用的なレリ-フパターンが得られやすく、未露光部の現像後残滓を抑制しやすい。
2,2’-ジエトキシアセトフェノン、2-ヒドロキシ-2-メチルプロピオフェノン、1-ヒドロキシシクロヘキシルフェニルケトン等のアセトフェノン誘導体、
チオキサントン、2-メチルチオキサントン、2-イソプロピルチオキサントン、ジエチルチオキサントン等のチオキサントン誘導体、
ベンジル、ベンジルジメチルケタール、ベンジル-β-メトキシエチルアセタール等のベンジル誘導体、
ベンゾイン、ベンゾインメチルエーテル等のベンゾイン誘導体、及び
1-フェニル-1,2-ブタンジオン-2-(O-メトキシカルボニル)オキシム、1-フェニル-1,2-プロパンジオン-2-(O-メトキシカルボニル)オキシム、1-フェニル-1,2-プロパンジオン-2-(O-エトキシカルボニル)オキシム、1-フェニル-1,2-プロパンジオン-2-(O-ベンゾイル)オキシム、1,3-ジフェニルプロパントリオン-2-(O-エトキシカルボニル)オキシム、1-フェニル-3-エトキシプロパントリオン-2-(O-ベンゾイル)オキシム、エタノン,1-[9-エチル-6-(2-メチルベンゾイル)-9H-カルバゾール-3-イル]-,1-(O-アセチルオキシム)、下記式で表される化合物等のオキシムエステル類などが好ましく挙げられるが、これらに限定されるものではない。
(C1)成分は、活性光線に対する感度が後述する(C2)成分より高いことが好ましく、高感度な感光剤であることが好ましい。
(C2)成分は、活性光線に対する感度が(C1)成分より低いことが好ましく、標準的な感度の感光剤であることが好ましい。
また、(C)成分は、(C1)成分及び(C2)成分を含むことが好ましい。
上記範囲内の場合、光架橋が膜厚方向で均一となりやすく、実用的なレリ-フパターンを得やすくなる。
(D)成分は、2-(メチルフェニルアミノ)エタノール、2-(エチルアニリノ)エタノール、N-フェニルジエタノールアミン、N-メチルアニリン、N-エチルアニリン、N,N-ジメチルアニリン、N-フェニルエタノールアミン、4-フェニルモルフォリン及び2,2′-(4-メチルフェニルイミノ)ジエタノールからなる群から選択される1以上であることが好ましく、N-フェニルジエタノールアミン、N-メチルアニリン、N-エチルアニリン、N,N-ジメチルアニリン、N-フェニルエタノールアミン、4-フェニルモルフォリン及び2,2′-(4-メチルフェニルイミノ)ジエタノールからなる群から選択される1以上であることがより好ましい。
式(17)のR31A~R33Aのヒドロキシ基を有する1価の脂肪族炭化水素基としては、R31A~R33Aの1価の脂肪族炭化水素基に、1以上(好ましくは1~3)のヒドロキシ基が結合した基等が挙げられる。具体的には、メチロール基、ヒドロキシエチル基等が挙げられる。ヒドロキシエチル基が好ましい。
1価の芳香族炭化水素基としては、フェニル基、ナフチル基等が挙げられる。
式(17)のR31A~R33Aの1価の芳香族基は、置換基を有してもよい。置換基としては、上述の式(17)のR31A~R33Aの1価の脂肪族炭化水素基、及び上述の式(17)のR31A~R33Aのヒドロキシ基を有する1価の脂肪族炭化水素基と同様のものが挙げられる。
(D)成分の含有量は、イミド化率や感度向上の観点から、(A)成分100質量部に対して、0.1~20質量部が好ましい。保存安定性の観点から、より好ましくは0.3~15質量部、さらに好ましくは0.5~10質量部である。
(E)成分としては、N-メチル-2-ピロリドン、γ-ブチロラクトン、乳酸エチル、プロピレングリコールモノメチルエーテルアセテート、酢酸ベンジル、n-ブチルアセテート、エトキシエチルプロピオネート、3-メチルメトキシプロピオネート、N,N-ジメチルホルムアミド、N,N-ジメチルアセトアミド、ジメチルスルホキシド、ヘキサメチルホスホリルアミド、テトラメチレンスルホン、シクロヘキサノン、シクロペンタノン、ジエチルケトン、ジイソブチルケトン、メチルアミルケトン、N-ジメチルモルホリン等が挙げられ、通常、他の成分を充分に溶解できるものであれば特に制限はない。
この中でも、各成分の溶解性と感光性樹脂膜形成時の塗布性に優れる観点から、N-メチル-2-ピロリドン、γ-ブチロラクトン、乳酸エチル、プロピレングリコールモノメチルエーテルアセテート、N,N-ジメチルホルムアミド、N,N-ジメチルアセトアミドを用いることが好ましい。
式(21)で表される化合物は、3-メトキシ-N,N-ジメチルプロパンアミド(例えば、商品名「KJCMPA-100」(KJケミカルズ株式会社製))であることが好ましい。
(E)成分の含有量は、特に限定されないが、一般的に、(A)成分100質量部に対して、50~1000質量部である。
(F)成分としては、成膜時に溶剤を除去するための加熱(乾燥)では分解せず、硬化時の加熱により分解してラジカルを発生し、(B)成分同士、又は(A)成分及び(B)成分の重合反応を促進する化合物が好ましい。
(F)成分は分解点が、110℃以上200℃以下の化合物が好ましく、より低温で重合反応を促進する観点から、110℃以上175℃以下の化合物がより好ましい。
2,6-ジ-t-ブチル-4-メチルフェノール、2,5-ジ-t-ブチル-ハイドロキノン、オクタデシル-3-(3,5-ジ-t-ブチル-4-ヒドロキシフェニル)プロピオネ-ト、4、4’-メチレンビス(2、6-ジ-t-ブチルフェノール)、4,4’-チオ-ビス(3-メチル-6-t-ブチルフェノール)、4,4’-ブチリデン-ビス(3-メチル-6-t-ブチルフェノール)、トリエチレングリコール-ビス[3-(3-t-ブチル-5-メチル-4-ヒドロキシフェニル)プロピオネート]、2,2-チオ-ジエチレンビス[3-(3,5-ジ-t-ブチル-4-ヒドロキシフェニル)プロピオネート]、N,N’-ヘキサメチレンビス(3,5-ジ-t-ブチル-4-ヒドロキシ-ヒドロシンナマミド)、イソオクチル-3-(3,5-ジ-t-ブチル-4-ヒドロキシフェニル)プロピオネート、1,3,5-トリス[4-トリエチルメチル-3-ヒドロキシ-2,6-ジメチルベンジル]-1,3,5-トリアジン-2,4,6-(1H,3H,5H)-トリオン、2,2’-メチレン-ビス(4-メチル-6-t-ブチルフェノール)、2,2’-メチレン-ビス(4-エチル-6-t-ブチルフェノール)、
トリス-(3,5-ジ-t-ブチル-4-ヒドロキシベンジル)-イソシアヌレイト、1,3,5-トリメチル-2,4,6-トリス(3,5-ジ-t-ブチル-4-ヒドロキシベンジル)ベンゼン、1,3,5-トリス(3-ヒドロキシ-2,6-ジメチル-4-イソプロピルベンジル)-1,3,5-トリアジン-2,4,6-(1H,3H,5H)-トリオン、1,3,5-トリス(4-t-ブチル-3-ヒドロキシ-2,6-ジメチルベンジル)-1,3,5-トリアジン-2,4,6-(1H,3H,5H)-トリオン、1,3,5-トリス(4-s-ブチル-3-ヒドロキシ-2,6-ジメチルベンジル)-1,3,5-トリアジン-2,4,6-(1H,3H,5H)-トリオン、1,3,5-トリス[4-(1-エチルプロピル)-3-ヒドロキシ-2,6-ジメチルベンジル]-1,3,5-トリアジン-2,4,6-(1H,3H,5H)-トリオン、1,3,5-トリス(4-t-ブチル-3-ヒドロキシ-2-メチルベンジル)-1,3,5-トリアジン-2,4,6-(1H,3H,5H)-トリオン、1,3,5-トリス(4-t-ブチル-3-ヒドロキシ-2,5-ジメチルベンジル)-1,3,5-トリアジン-2,4,6-(1H,3H,5H)-トリオン、
ペンタエリスリチル-テトラキス[3-(3,5-ジ-t-ブチル-4-ヒドロキシフェニル)プロピオネート]、1,6-ヘキサンジオール-ビス[3-(3,5-ジ-t-ブチル-4-ヒドロキシフェニル)プロピオネート]、1,3,5-トリス(4-t-ブチル-3-ヒドロキシ-2,5,6-トリメチルベンジル)-1,3,5-トリアジン-2,4,6-(1H,3H,5H)-トリオン、1,3,5-トリス(4-t-ブチル-5-エチル-3-ヒドロキシ-2,6-ジメチルベンジル)-1,3,5-トリアジン-2,4,6-(1H,3H,5H)-トリオン、1,3,5-トリス(4-t-ブチル-6-エチル-3-ヒドロキシ-2,5-ジメチルベンジル)-1,3,5-トリアジン-2,4,6-(1H,3H,5H)-トリオン、1,3,5-トリス(4-t-ブチル-5,6-ジエチル-3-ヒドロキシ-2-メチルベンジル)-1,3,5-トリアジン-2,4,6-(1H,3H,5H)-トリオン、1,3,5-トリス(4-t-ブチル-6-エチル-3-ヒドロキシ-2-メチルベンジル)-1,3,5-トリアジン-2,4,6-(1H,3H,5H)-トリオン、
1,3,5-トリス(4-t-ブチル-5‐エチル-3-ヒドロキシ-2-メチルベンジル)-1,3,5-トリアジン-2,4,6-(1H,3H,5H)-トリオン、1,3,5-トリス(3-ヒドロキシ-2,6-ジメチル-4-フェニルベンジル)-1,3,5-トリアジン-2,4,6-(1H,3H,5H)-トリオン、及び
1,3,5-トリス(4-t-ブチル-3-ヒドロキシ-2,6-ジメチルベンジル)イソシアヌル酸等が挙げられる。
低温での硬化を行った際の接着性の発現に優れるため、下記式(13)で表される化合物がより好ましい。
ヒドロキシ基又はグリシジル基を有するシランカップリング剤としては、メチルフェニルシランジオール、エチルフェニルシランジオール、n-プロピルフェニルシランジオール、イソプロピルフェニルシランジオール、n-ブチルフェニルシランジオール、イソブチルフェニルシランジオール、tert-ブチルフェニルシランジオール、ジフェニルシランジオール、エチルメチルフェニルシラノール、n-プロピルメチルフェニルシラノール、イソプロピルメチルフェニルシラノール、n-ブチルメチルフェニルシラノール、イソブチルメチルフェニルシラノール、tert-ブチルメチルフェニルシラノール、エチルn-プロピルフェニルシラノール、エチルイソプロピルフェニルシラノール、n-ブチルエチルフェニルシラノール、イソブチルエチルフェニルシラノール、tert-ブチルエチルフェニルシラノール、メチルジフェニルシラノール、エチルジフェニルシラノール、n-プロピルジフェニルシラノール、イソプロピルジフェニルシラノール、n-ブチルジフェニルシラノール、イソブチルジフェニルシラノール、tert-ブチルジフェニルシラノール、フェニルシラントリオール、1,4-ビス(トリヒドロキシシリル)ベンゼン、1,4-ビス(メチルジヒドロキシシリル)ベンゼン、1,4-ビス(エチルジヒドロキシシリル)ベンゼン、1,4-ビス(プロピルジヒドロキシシリル)ベンゼン、1,4-ビス(ブチルジヒドロキシシリル)ベンゼン、1,4-ビス(ジメチルヒドロキシシリル)ベンゼン、1,4-ビス(ジエチルヒドロキシシリル)ベンゼン、1,4-ビス(ジプロピルヒドロキシシリル)ベンゼン、1,4-ビス(ジブチルヒドロキシシリル)ベンゼン、及び下記式(14)で表わされる化合物等が挙げられる。中でも、特に、基板との接着性をより向上させるため、式(14)で表される化合物が好ましい。
さらにアミノ基を有するシランカップリング剤としては、ビス(2-ヒドロキシメチル)-3-アミノプロピルトリエトキシシラン、ビス(2-ヒドロキシメチル)-3-アミノプロピルトリメトキシシラン、ビス(2-グリシドキシメチル)-3-アミノプロピルトリエトキシシラン、ビス(2-ヒドロキシメチル)-3-アミノプロピルトリメトキシシラン等が挙げられる。
防錆剤としては、例えば、トリアゾール誘導体及びテトラゾール誘導体等が挙げられる。
防錆剤は、1種単独で用いてもよく、2種以上を組み合わせてもよい。
重合禁止剤としては、ラジカル重合禁止剤、ラジカル重合抑制剤等が挙げられる。
本発明の感光性樹脂組成物の、例えば、80質量%以上、90質量%以上、95質量%以上、98質量%以上又は100質量%が、
(A)~(E)成分、
(A)~(F)成分、又は
(A)~(E)成分、並びに任意に(F)成分、カップリング剤、界面活性剤、レベリング剤、防錆剤及び重合禁止剤からなっていてもよい。
本発明の硬化物は、パターン硬化物として用いてもよく、パターンがない硬化物として用いてもよい。
本発明の硬化物の膜厚は、5~20μmが好ましい。
これにより、パターン硬化物を得ることができる。
乾燥温度は90~150℃が好ましく、溶解コントラスト確保の観点から、90~120℃がより好ましい。
乾燥時間は、30秒間~5分間が好ましい。
乾燥は、2回以上行ってもよい。
これにより、上述の感光性樹脂組成物を膜状に形成した感光性樹脂膜を得ることができる。
照射する活性光線は、i線、広帯域(BB)等の紫外線、可視光線、放射線などが挙げられるが、i線であることが好ましい。
露光装置としては、平行露光機、投影露光機、ステッパ、スキャナ露光機等を用いることができる。
現像液として用いる有機溶剤は、現像液としては、感光性樹脂膜の良溶媒を単独で、又は良溶媒と貧溶媒を適宜混合して用いることができる。
良溶媒としては、N-メチル-2-ピロリドン、N-アセチル-2-ピロリドン、N,N-ジメチルアセトアミド、N,N-ジメチルホルムアミド、ジメチルスルホキシド、γ-ブチロラクトン、α-アセチル-γ-ブチロラクトン、シクロペンタノン、シクロヘキサノン等が挙げられる。
貧溶媒としては、トルエン、キシレン、メタノール、エタノール、イソプロパノール、プロピレングリコールモノメチルエーテルアセテート、プロピレングリコールモノメチルエーテル及び水等が挙げられる。
現像時間は、用いる(A)成分によっても異なるが、10秒間~15分間が好ましく、10秒間~5分間より好ましく、生産性の観点からは、20秒間~5分間がさらに好ましい。
リンス液としては、蒸留水、メタノール、エタノール、イソプロパノール、トルエン、キシレン、プロピレングリコールモノメチルエーテルアセテート、プロピレングリコールモノメチルエーテル等を単独又は適宜混合して用いてもよく、また段階的に組み合わせて用いてもよい。
(A)成分のポリイミド前駆体が、加熱処理工程によって、脱水閉環反応を起こし、通常対応するポリイミドとなる。
上記範囲内であることにより、基板やデバイスへのダメージを小さく抑えることができ、デバイスを歩留り良く生産することが可能となり、プロセスの省エネルギー化を実現することができる。
上記範囲内であることにより、架橋反応又は脱水閉環反応を充分に進行することができる。
加熱処理の雰囲気は大気中であっても、窒素等の不活性雰囲気中であってもよいが、パターン樹脂膜の酸化を防ぐことができる観点から、窒素雰囲気下が好ましい。
上記パッシベーション膜、バッファーコート膜、層間絶縁膜、カバーコート層及び表面保護膜等からなる群から選択される1以上を用いて、信頼性の高い、半導体装置、多層配線板、各種電子デバイス、積層デバイス(マルチダイファンアウトウエハレベルパッケージ等)等の電子部品などを製造することができる。
図1は、本発明の一実施形態に係る電子部品である多層配線構造の半導体装置の製造工程図である。
図1において、回路素子を有するSi基板等の半導体基板1は、回路素子の所定部分を除いてシリコン酸化膜等の保護膜2などで被覆され、露出した回路素子上に第1導体層3が形成される。その後、前記半導体基板1上に層間絶縁膜4が形成される。
次いで、窓6Bから露出した第1導体層3を腐食することなく、感光性樹脂層5のみを腐食するようなエッチング溶液を用いて感光性樹脂層5が完全に除去される。
3層以上の多層配線構造を形成する場合には、上述の工程を繰り返して行い、各層を形成することができる。
尚、前記例において、層間絶縁膜を本発明の感光性樹脂組成物を用いて形成することも可能である。
3,3’,4,4’‐ジフェニルエーテルテトラカルボン酸二無水物(ODPA)7.07gと2,2’-ジメチルビフェニル-4,4’-ジアミン(DMAP)4.12gとをN-メチル-2-ピロリドン(NMP)30gに溶解し、30℃で4時間、その後室温下で一晩撹拌し、ポリアミド酸を得た。そこに水冷下で無水トリフルオロ酢酸を9.45g加え、45℃で3時間撹拌し、メタクリル酸2-ヒドロキシエチル(HEMA)7.08gを加えた。この反応液を蒸留水に滴下し、沈殿物をろ別して集め、減圧乾燥することによってポリイミド前駆体A1を得た。
ゲルパーミエーションクロマトグラフ(GPC)法を用いて、標準ポリスチレン換算により、以下の条件で、数平均分子量を求めた。A1の数平均分子量は40,000であった。
ポンプ:株式会社日立製作所製L6000
株式会社島津製作所製C-R4A Chromatopac
測定条件:カラムGelpack GL-S300MDT-5×2本
溶離液:THF/DMF=1/1(容積比)
LiBr(0.03mol/L)、H3PO4(0.06mol/L)
流速:1.0mL/min、検出器:UV270nm
磁場強度:400MHz
基準物質:テトラメチルシラン(TMS)
溶媒:ジメチルスルホキシド(DMSO)
(感光性樹脂組成物の調製)
表1に示した成分及び配合量にて、実施例1~3及び比較例1~5の感光性樹脂組成物を調製した。表1の配合量は、100質量部のA1に対する、各成分の質量部である。
B1:A-DCP(新中村化学工業株式会社製、トリシクロデカンジメタノールジアクリレート、下記式B1で表される化合物)
C1:IRUGCURE OXE 02(BASFジャパン株式会社製、エタノン,1-[9-エチル-6-(2-メチルベンゾイル)-9H-カルバゾール-3-イル]-,1-(O-アセチルオキシム))
C2:G-1820(PDO)(Lambson株式会社製、1-フェニル-1,2-プロパンジオン-2-(O-エトキシカルボニル)オキシム)
D1:2HE(モーリン化学工業株式会社製、N-フェニルジエタノールアミン)
D2:U-CAT SA810(サンアプロ株式会社製、下記式D2で表される化合物)
得られた感光性樹脂組成物を、塗布装置Act8(東京エレクトロン株式会社製)を用いて、シリコンウエハ上にスピンコートし、105℃で120秒間乾燥後、115℃で120秒間乾燥して乾燥膜厚が13μmの感光性樹脂膜を形成した。
得られた感光性樹脂膜をシクロペンタノンに浸漬して完全に溶解するまでの時間の2倍を現像時間として設定した。
また、上記と同様に感光性樹脂膜を作製し、得られた感光性樹脂膜に、i線ステッパFPA-3000iW(キヤノン株式会社製)を用いて、100~1100mJ/cm2のi線を、100mJ/cm2刻みの照射量で、所定のパターンに照射して、露光を行った。
露光後の樹脂膜を、Act8を用いて、シクロペンタノンに、上記の現像時間で現像した後、プロピレングリコールモノメチルエーテルアセテート(PGMEA)でリンス洗浄を行い、パターン樹脂膜を得た。
感度の評価で得られたパターン樹脂膜を、縦型拡散炉μ-TF(光洋サーモシステム株式会社製)を用いて、窒素雰囲気下、200℃で2時間加熱し、パターン硬化物(硬化後膜厚10μm)が得られた。
感度の評価で得られたパターン樹脂膜を、縦型拡散炉μ-TFを用いて、窒素雰囲気下、400℃で1時間加熱し、パターン硬化物が得られた。
感度の評価で得られたパターン樹脂膜について、FT-IR IRAffinity-1S(株式会社島津製作所製)を用いて、以下の条件でIR(赤外分光分析)スペクトルを測定した。この値をIR1とする。
IRスペクトルの測定条件は、透過法で、測定範囲400~4000cm-1、積算回数16回で行った。
IRスペクトルの測定は、基板としてシリコンウエハを用いた。まず、感光性樹脂組成物を塗布していない基板について、測定し、バックグラウンドとした。次に、パターン樹脂膜の樹脂膜部分について、上記バックグラウンドを用いて、測定を行い、IRスペクトルを得た。
パターン硬化物の製造2で得られたパターン硬化物について、上記と同様にIRを測定した。この値をIR3とする。
上述の感光性樹脂組成物について、調整後24時間以内で、Si基板上に、乾燥後の膜厚が13μmになる回転数でスピンコートし、ホットプレート上で、105℃で120秒間、115℃で120秒間加熱乾燥し、感光性樹脂膜を形成した。膜の一部分をけがくことでシリコンウエハを露出させ、露出したシリコンウエハ表面から膜表面までの高さを、接針式プロファイラーDektak150(ブルカー社製)を用いて、測定した(膜厚の測定は、上記において同様であり、以下においても同様である)。これを膜厚1とする。
上述の感光性樹脂組成物を、調整後、室温(25℃)で、14日間静置した。静置の後、Si基板上に、膜厚1測定用の感光性樹脂膜を形成したときと同じ回転数でスピンコートし、ホットプレート上で、105℃で120秒間、115℃で120秒間加熱乾燥し、感光性樹脂膜を形成した。上記と同様に、膜厚を測定した。これを膜厚2とする。
膜厚2から膜厚1を引いた絶対値を、膜厚1で除して、百分率にした値が、5%以下の場合をAとした。5%を超える場合をBとした。結果を表1に示す。
上述の感光性樹脂組成物を、Si基板上にスピンコートし、ホットプレート上で、105℃で120秒間、115℃で120秒間加熱乾燥し、12.0~13.0μmの感光性樹脂膜を形成した。
得られた感光性樹脂膜を、マスクアライナーMA-8(ズース・マイクロテック社製)を用いて、広帯域(BB)露光し、露光後の樹脂膜を、シクロペンタノンにて現像し、10mm幅の短冊状のパターン樹脂膜を得た。
得られたパターン樹脂膜を、縦型拡散炉μ-TFを用いて、窒素雰囲気下、200℃で2時間、硬化し、膜厚10μmのパターン硬化物を得た。
パターン硬化物の製造3で得られたパターン硬化物を、4.9質量%フッ酸水溶液に浸漬して、10mm幅の硬化物をウエハから剥離した。
剥離した10mm幅の硬化物について、オートグラフAGS-X 100 N(株式会社島津製作所製)を用いて、引っ張り試験を行った。チャック間距離20mm、引張速度5mm/分、測定温度を18~25℃とし、各実施例及び比較例の硬化物ごとに、3回測定し、伸び率の平均値を求めた。
伸び率の平均値が、50%超の場合Aとし、45%超50%以下の場合Bとし、45%以下の場合Cとした。PCT(プレッシャークッカー試験)前の結果として、表1に示す。
PCT試験装置からパターン硬化物を取り出し、パターン硬化物を、上記と同様に剥離し、引っ張り試験を行い、伸び率の平均値を求めた。
伸び率の平均値が、50%超の場合Aとし、45%超50%以下の場合Bとし、45%以下の場合Cとした。PCT後の結果として、表1に示す。「-」は測定しなかったこと示す。
この明細書に記載の文献、及び本願のパリ条約による優先権の基礎となる出願の内容を全て援用する。
Claims (19)
- (A)重合性の不飽和結合を有するポリイミド前駆体、
(B)重合性モノマー、
(C)光重合開始剤、
(D)環化触媒、及び
(E)溶剤を含有する感光性樹脂組成物。 - 前記(A)成分が、下記式(1)で表される構造単位を有するポリイミド前駆体である請求項1に記載の感光性樹脂組成物。
(式(1)中、X1は1以上の芳香族基を有する4価の基であって、-COOR1基と-CONH-基とは互いにオルト位置にあり、-COOR2基と-CO-基とは互いにオルト位置にある。Y1は2価の芳香族基である。R1及びR2は、それぞれ独立に、水素原子、下記式(2)で表される基、又は炭素数1~4の脂肪族炭化水素基であり、R1及びR2の少なくとも一方が前記式(2)で表される基である。)
(式(2)中、R3~R5は、それぞれ独立に、水素原子又は炭素数1~3の脂肪族炭化水素基であり、mは1~10の整数である。) - 前記(D)成分が、N-フェニルジエタノールアミン、N-メチルアニリン、N-エチルアニリン、N,N-ジメチルアニリン、N-フェニルエタノールアミン、4-フェニルモルフォリン及び2,2′-(4-メチルフェニルイミノ)ジエタノールからなる群から選択される1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(C)成分が(C1)下記式(15)で表される化合物及び(C2)下記式(16)で表される化合物を含む請求項1~4のいずれかに記載の感光性樹脂組成物。
(式(15)中、R11Aは炭素数1~12のアルキル基であり、a1は0~5の整数である。R12Aは水素原子又は炭素数1~12のアルキル基である。R13A及びR14Aは、それぞれ独立に水素原子、炭素数1~12のアルキル基、フェニル基又はトリル基を示す。a1が2以上の整数の場合、R11Aはそれぞれ同一でもよく、異なっていてもよい。)
(式(16)中、R21Aは炭素数1~12のアルキル基であり、R22A及びR23Aは、それぞれ独立に水素原子、炭素数1~12のアルキル基、炭素数1~12のアルコキシ基、炭素数4~10のシクロアルキル基、フェニル基又はトリル基であり、c1は0~5の整数である。c1が2以上の整数の場合、R21Aはそれぞれ同一でもよく、異なっていてもよい。) - 前記(B)成分が、脂肪族環状骨格を有する重合性モノマーを含む請求項1~5のいずれかに記載の感光性樹脂組成物。
- 前記(B)成分が、重合性の不飽和二重結合を含む基を有する請求項1~6のいずれかに記載の感光性樹脂組成物。
- 前記(B)成分が、2以上の重合性の不飽和二重結合を含む基を有する重合性モノマーである請求項7に記載の感光性樹脂組成物。
- n1+n2が、2又は3である請求項9に記載の感光性樹脂組成物。
- さらに、(F)熱重合開始剤を含む請求項1~11のいずれかに記載の感光性樹脂組成物。
- さらに、酸化防止剤を含む請求項1~12のいずれかに記載の感光性樹脂組成物。
- 請求項1~13のいずれかに記載の感光性樹脂組成物を基板上に塗布、乾燥して感光性樹脂膜を形成する工程と、
前記感光性樹脂膜をパターン露光して、樹脂膜を得る工程と、
前記パターン露光後の樹脂膜を、有機溶剤を用いて、現像し、パターン樹脂膜を得る工程と、
前記パターン樹脂膜を加熱処理する工程と、を含むパターン硬化物の製造方法。 - 前記加熱処理の温度が230℃以下である請求項14に記載のパターン硬化物の製造方法。
- 請求項1~13のいずれかに記載の感光性樹脂組成物を硬化した硬化物。
- パターン硬化物である請求項16に記載の硬化物。
- 請求項16又は17に記載の硬化物を用いて作製された層間絶縁膜、カバーコート層又は表面保護膜。
- 請求項18に記載の層間絶縁膜、カバーコート層又は表面保護膜を含む電子部品。
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| JP2020550511A JP7405088B2 (ja) | 2018-10-03 | 2019-10-02 | 感光性樹脂組成物、パターン硬化物の製造方法、硬化物、層間絶縁膜、カバーコート層、表面保護膜及び電子部品 |
| CN201980065227.5A CN113168092B (zh) | 2018-10-03 | 2019-10-02 | 感光性树脂组合物、图案固化物的制造方法、固化物、层间绝缘膜、覆盖涂层、表面保护膜及电子部件 |
| CN202511226177.8A CN120802564A (zh) | 2018-10-03 | 2019-10-02 | 感光性树脂组合物、图案固化物的制造方法、固化物、层间绝缘膜、覆盖涂层、表面保护膜及电子部件 |
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| JPWO2023008049A1 (ja) * | 2021-07-30 | 2023-02-02 | ||
| WO2023171014A1 (ja) * | 2022-03-09 | 2023-09-14 | Hdマイクロシステムズ株式会社 | 絶縁膜形成材料、半導体装置の製造方法及び半導体装置 |
| JP2023132964A (ja) * | 2022-03-11 | 2023-09-22 | Hdマイクロシステムズ株式会社 | 絶縁膜形成材料、半導体装置の製造方法及び半導体装置 |
| WO2025088705A1 (ja) * | 2023-10-24 | 2025-05-01 | Hdマイクロシステムズ株式会社 | 感光性樹脂組成物、パターン硬化物の製造方法、硬化物、及び電子部品 |
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Also Published As
| Publication number | Publication date |
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| TW202028863A (zh) | 2020-08-01 |
| CN113168092B (zh) | 2025-09-16 |
| KR102762481B1 (ko) | 2025-02-05 |
| KR20210068418A (ko) | 2021-06-09 |
| CN120802564A (zh) | 2025-10-17 |
| CN113168092A (zh) | 2021-07-23 |
| JPWO2020071437A1 (ja) | 2021-09-24 |
| JP7405088B2 (ja) | 2023-12-26 |
| TWI816900B (zh) | 2023-10-01 |
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