WO2008026401A1 - Composition de résine isolante photosensible et produit durci à base de cette résine - Google Patents
Composition de résine isolante photosensible et produit durci à base de cette résine Download PDFInfo
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- WO2008026401A1 WO2008026401A1 PCT/JP2007/064433 JP2007064433W WO2008026401A1 WO 2008026401 A1 WO2008026401 A1 WO 2008026401A1 JP 2007064433 W JP2007064433 W JP 2007064433W WO 2008026401 A1 WO2008026401 A1 WO 2008026401A1
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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
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
- G03F7/0385—Macromolecular compounds which are rendered insoluble or differentially wettable using epoxidised novolak resin
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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
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
- G03F7/0382—Macromolecular compounds which are rendered insoluble or differentially wettable the macromolecular compound being present in a chemically amplified negative photoresist composition
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/12—Monomers containing a branched unsaturated aliphatic radical or a ring substituted by an alkyl radical
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/14—Monomers containing only one unsaturated aliphatic radical containing one ring substituted by heteroatoms or groups containing heteroatoms
- C08F212/22—Oxygen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/14—Monomers containing only one unsaturated aliphatic radical containing one ring substituted by heteroatoms or groups containing heteroatoms
- C08F212/22—Oxygen
- C08F212/24—Phenols or alcohols
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0045—Photosensitive materials with organic non-macromolecular light-sensitive compounds not otherwise provided for, e.g. dissolution inhibitors
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/032—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders
- G03F7/033—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders the binders being polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/06—Hydrocarbons
- C08F212/08—Styrene
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
Definitions
- the present invention relates to a photosensitive insulating resin composition used for a surface protective film (overcoat film) such as a semiconductor element, an interlayer insulating film (passivation film), a chip stacking adhesive, and the like, and to cure the same. It relates to an insulating cured product. More specifically, the present invention relates to a cured product having excellent electrical insulation as a permanent film resist, and excellent properties such as adhesion and thermal shock resistance, and a photosensitive insulating resin composition from which such a cured product can be obtained.
- Patent Document 1 JP-A-5-5996
- Patent Document 2 JP-A 2000-98601
- Patent Document 3 Publication of Japanese Patent Application Laid-Open No.
- Patent Document 4 Japanese Patent Laid-Open No. 2001-33964 and the like also describe a negative photosensitive insulating resin composition using a polyphenylene oxide resin.
- this light-sensitive insulating resin composition has problems in balance of various performances such as resolution, electrical insulation, thermal shock and adhesion.
- the alkali-soluble resin used is one that is used to enable development with an alkaline aqueous solution
- Patent Documents 5 and 6 are formed using an alkali-soluble resin having a phenolic hydroxyl group. It is described that the developed film has sufficient developability with an alkaline aqueous solution, and the molecular weight of the alkali-soluble resin affects the resolution, thermal shock resistance, and heat resistance of the resulting insulating film. Both have been suggested.
- Patent Document 10 JP-A-11-60683 discloses a radiation-sensitive resin composition containing an alkali-soluble resin, an epoxy compound, and a compound having an oxetanyl group in the molecule. Has been. This patent document discloses that it is possible to prevent the thermal sag phenomenon by using an oxetanyl group-containing compound, and does not suggest any other effects.
- the molecular weight force of alkali-soluble resins has been suggested to affect the resolution, image quality, and plating solution resistance. It is suggested that other properties, especially electrical insulation, can be improved by alkali-soluble resins. Not even the effects of the type of alkali-soluble resin! /, What is suggested! /, No! /.
- Patent Document 11 (WO 01-22165 pamphlet) describes a photopolymer containing a binder polymer, a photopolymerizable compound having at least one polymerizable cyclic ether group in the molecule, and a photoacid generator.
- a resin composition is disclosed, and the binder polymer includes a styrene resin, the photopolymerizable compound includes an oxetane compound, and an epoxy compound. Illustrated.
- this patent document discloses that the use of an oxetane compound or an epoxy compound improves the sensitivity, release characteristics, and pattern shape of the photosensitive resin composition. There is no suggestion that the resin can improve electrical insulation, and there is no suggestion of the effect of the type of alkali-soluble resin.
- Patent Document 1 JP-A-5-5996
- Patent Document 2 JP 2000-98601 A
- Patent Document 3 Japanese Patent Laid-Open No. 11 237736
- Patent Document 4 Japanese Patent Laid-Open No. 2001-33964
- Patent Document 5 Japanese Patent Laid-Open No. 2002-139835
- Patent Document 6 Japanese Patent Laid-Open No. 2003-215802
- Patent Document 7 JP-A-5-45879
- Patent Document 8 JP-A-6-130666
- Patent Document 9 JP-A-7-146556
- Patent Document 10 JP-A-11 60683
- Patent Document 11 Pamphlet of International Publication No. 01-22165
- the present invention is intended to solve the problems associated with the prior art as described above, and an object of the present invention is to provide a cured product excellent in properties such as electrical insulation, thermal shock resistance, and adhesion. It is. Another object of the present invention is to provide a photosensitive insulating resin composition that can obtain such a cured product and is suitable for uses such as an interlayer insulating film and a surface protective film of a semiconductor element. Means for solving the problem
- the present inventors have intensively studied to solve the above problems, and among the alkali-soluble resins having a phenolic hydroxyl group, a resin having a specific structure and composition ratio is used as a photosensitive insulating resin composition.
- a resin having a specific structure and composition ratio is used as a photosensitive insulating resin composition.
- the electrical insulation and thermal shock resistance of the obtained cured product are remarkably improved, and by adding an oxetanyl group-containing compound, the curing rate can be improved, and outgassing is generated during curing. Generation of voids
- a cured product having excellent adhesion can be obtained, and has led to the completion of the present invention.
- the photosensitive insulating resin composition according to the present invention is represented by (A) structure unit represented by the following formula (1) (A1) 10 to 99 mole 0/0, and the following formula (2) Structural unit (A2) Copolymer containing 90 to 1 mol% (however, the total of all structural units constituting the copolymer (A) is 10
- R 1 represents an alkyl group, an alkoxy group or an aryl group having carbon atoms;! To 4, R 2 represents a hydrogen atom or a methyl group, m represents an integer of !! to 3, n Is an integer from 0 to 3, m + n ⁇ 5)
- R 3 represents an alkyl group having 1 to 4 carbon atoms, an alkoxy group or an aryl group, R 4 represents a hydrogen atom or a methyl group, and k is an integer of 0 to 3
- B A compound containing an oxetanyl group (Bl)
- C a photosensitive acid generator
- D a solvent
- F a crosslinked fine particle
- the copolymer (A) contains 70 to 95 mol% of the structural unit (A1) represented by the formula (1) (however, all the structural units constituting the copolymer (A)). The total is 100 mol%).
- the photosensitive insulating resin composition preferably further contains a compound (B2) containing an epoxy group.
- the content of the compound (B1) containing an oxetanyl group and the compound (B2) containing an epoxy group is 100 parts by mass
- the content of the compound (B1) containing an oxetanyl group is 40 to 60 masses
- the content of the compound (B2) containing an epoxy group is preferably 60 to 40 parts by mass.
- the structural unit (A2) is represented by the following formula (2,).
- the photosensitive insulating resin composition preferably further contains a phenol compound (a).
- the crosslinked fine particles (F) have an average particle diameter of 30 to 500 nm, and at least one glass transition temperature of the copolymer constituting the crosslinked fine particles (F) is 0 ° C. or lower. It is preferable.
- the total content of the crosslinked fine particles (F) is 0 .;! To 50 parts by mass with respect to 100 parts by mass in total of the copolymer (A) and the phenol compound (a). preferable.
- the photosensitive insulating resin composition preferably further contains an adhesion assistant (E).
- the cured product according to the present invention is obtained by curing the photosensitive insulating resin composition.
- a semiconductor element according to the present invention has a hardened insulating film formed using the photosensitive insulating resin composition.
- a cured product excellent in insulation, thermal shock, adhesion, etc. can be formed.
- This cured product is an interlayer insulating film of a semiconductor element. It is useful as a permanent film resist such as a surface protective film.
- FIG. 1 is a cross-sectional view of a base material for thermal shock evaluation.
- FIG. 2 is a top view of a base material for thermal shock evaluation.
- FIG. 3 is a top view of a substrate for evaluation of electrical insulation.
- FIG. 4 is a schematic cross-sectional view of a semiconductor element.
- FIG. 5 is a schematic cross-sectional view of a semiconductor element.
- the photosensitive insulating resin composition according to the present invention comprises (A) a structural unit represented by the above formula (1) (A1) 10 to 99 mol% and a structural unit represented by the above formula (2) (8) Copolymer containing 90 to 1 mol% (provided that the total of all structural units constituting the copolymer (A) is 100 mol%), (B) Compound containing oxetanyl group (Bl) (C) a photosensitive acid generator, (D) a solvent, and (F) a crosslinked fine particle.
- the photosensitive insulating resin composition preferably includes (B2) an epoxy group-containing compound in that generation of outgas during curing is prevented to prevent generation of voids and adhesion is further improved. Further, if necessary, it may contain other additives such as phenol compound (a), adhesion aid (E), sensitizer, leveling agent and the like.
- the copolymer (A) used in the present invention contains a structural unit (A1) represented by the above formula (1) and a structural unit (A2) represented by the above formula (2), and has an alkali solubility. It is the copolymer shown.
- Such a copolymer (A) includes, for example, a monomer capable of forming the structural unit (A1) represented by the above formula (1) and the structural unit (A2) represented by the above formula (2). It can be obtained by copolymerizing monomers that can be formed.
- Examples of the monomer capable of forming the structural unit (A1) represented by the above formula (1) include a monomer represented by the following formula (3).
- R 1 has 1 to 4 carbon atoms and represents an alkyl group, an alkoxy group or an aryl group; R 2 represents a hydrogen atom or a methyl group; m is an integer from! To 3; n is an integer from 0 to 3, and m + n ⁇ 5.
- aromatic bur compounds having a phenolic hydroxyl group such as p-hydroxystyrene, m-hydroxystyrene, o-hydroxystyrene, p-isopropeno-enophenol, m-iso-propeno-enophenol, o-iso-phenolphenol.
- p-hydroxystyrene and p-isopropylenephenol are preferably used.
- the monomer capable of forming the structural unit (A1) a monomer in which the hydroxyl group of the monomer represented by the above formula (3) is protected with, for example, a t-butyl group or an acetyl group is used. You can also.
- the obtained copolymer is deprotected in a known manner, for example, under an acid catalyst, and a protecting group such as a t-butyl group or a acetyl group is converted into a hydroxyl group. By doing so, the copolymer (A) having the structural unit (A1) can be obtained.
- Examples of the monomer capable of forming the structural unit (A2) represented by the above formula (2) include a monomer represented by the following formula (4).
- R 3 has 1 to 4 carbon atoms and represents an alkyl group, an alkoxy group or an aryl group; R 4 represents a hydrogen atom or a methyl group.
- K is an integer of 0 to 3)
- aromatic bur compounds such as styrene, ⁇ -methylstyrene, ⁇ -methylstyrene, m-methylstyrene, p-methylstyrene, o-methoxystyrene, m-methoxystyrene, and p-methoxystyrene.
- Styrene particularly preferred is styrene, ⁇ -methylstyrene, and ⁇ methoxystyrene.
- the copolymer ( ⁇ ) is substantially composed of the structural unit (A1) and the structural unit ( ⁇ 2) in that a cured product having excellent electrical insulation can be obtained.
- other monomers can be used. Can also be copolymerized.
- Examples of such other monomers include compounds having an alicyclic skeleton, unsaturated carboxylic acids or acid anhydrides thereof, esters of unsaturated carboxylic acids, unsaturated nitriles, unsaturated compounds. Examples include amides, unsaturated imides, and unsaturated alcohols.
- unsaturated carboxylic acid esters include methyl esters of the above unsaturated carboxylic acids, ethino lesenore, n propino les enore, i propino les eno enole, n butino les eno enole, i butyl ester, sec butyl ester , T butyl ester, n amino les ester, n monohexyl ester, cyclohexyl ester, 2-hydroxyethyl ester, 2-droxypropyl ester, benzyl ester, isoboronyl ester, tricyclodecanol eno les ester, 1-a Damanchinoreestenore etc .;
- Unsaturated nitriles include (meth) acrylonitrile, maleic nitrile, fumaronitrile, mesacon nitrile, citracon nitrile, itacon nitrile, etc .;
- Unsaturated amides include (meth) atalinoleamide, crotonamide, maleinamide, fumanoleamide, mesaconamide, citraconamide, itaconamide;
- Unsaturated imides include maleimide, N fuel maleimide, N cyclohexylmaleimide, etc .;
- Unsaturated alcohols include (meth) aryl alcohol, etc.
- Power S is mentioned.
- N-Buraniline Bulpyridines
- N Vininole ⁇ -Cuff also included are oral ratatam, ⁇ Vininole pyrrolidone, ⁇ Vininole Remidazonore, ⁇ Vinino Recanole Baszonore.
- the structural unit (A1) is at 10 to 99 mole 0/0 Yes, preferably 20 to 97 mol%, more preferably 30 to 95 mol%, particularly preferably 70 to 95 mol%
- the is a structural unit (A2) is 1:90 mol%, preferably from 80 to 3 mol%, and more favorable Mashiku is 70 to 5 mol 0/0, and particularly preferably 30-5 mole 0 / 0 .
- the structural unit derived from the other monomer is assumed to be 100 to 20 mol%, assuming that the total of all the structural units constituting the copolymer (A) is 100 mol%. 1 to 15 mol% is preferable.
- the structural unit (A1) is:! ⁇ A 98 mole 0/0, preferably 19-98 Monore 0/0
- the structural unit (A2) is a 1:90 mole% Preferably, it is 80-1 mol%.
- the arrangement of the structural unit (A1), the structural unit (A2), and the structural unit formed from the other monomer is not particularly limited.
- the copolymer (A) may be a random copolymer or a block copolymer! /, Or may be shifted! /.
- the copolymer (A) is composed of the structural unit, and in particular, the structural unit (A2) is represented by the above formula (A2)
- the molecular weight of the copolymer (A) is not particularly limited! /, But the polystyrene-equivalent weight average molecular weight (Mw) measured by gel permeation chromatography (GPC) method is, for example, 200 , 000 or less, preferred ⁇ is 2,000-200,000, and more preferred ⁇ is 2,000-15,000.
- the ratio (Mw / Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) is preferably 1.0 to 10.0 force S, more preferably 1.0 to 8.0. If Mw is less than the above lower limit, physical properties such as heat resistance and elongation of the cured product may be lowered.
- Mn and Mw are GPC columns (G2000HXL: 2, G3000HXL: 1) manufactured by Tosoh Corporation, flow rate: 1 ⁇ Oml / min, elution solvent: tetrahydrofuran, column temperature: 40 ° C Under the conditions, monodisperse polystyrene was measured with a differential refractometer as a standard substance.
- the copolymer (A) retains a monomer that can form the structural unit (A1) or a hydroxyl group thereof. It can be obtained by polymerizing the protected monomer, the monomer capable of forming the structural unit (A2), and, if necessary, other monomers in the presence of an initiator in a solvent.
- the polymerization method is not particularly limited, but radical polymerization or anion polymerization is preferably used in order to obtain a copolymer having a molecular weight in the above range.
- the monomer capable of forming the structural unit (A1) a monomer in which a hydroxyl group is protected is used.
- the hydroxyl group is protected by deprotection by polymerization in a solvent in an acid catalyst such as hydrochloric acid or sulfuric acid at a temperature of 50 to 150 ° C for 1 to 30 hours.
- the resulting structural unit is converted to a structural unit (A2) containing a phenolic hydroxyl group.
- the copolymer (A) is usually 5 to 60% by mass, preferably 10 to 50% by mass, based on the entire resin composition (including the solvent (D)). %.
- the amount of the copolymer (A) is in the above range, the handleability of the composition is good and a cured product can be easily formed.
- the compound having a phenolic hydroxyl group other than the copolymer (A) if the alkali solubility of the copolymer (A) is insufficient, the compound having a phenolic hydroxyl group other than the copolymer (A). (Hereinafter referred to as “phenol compound (a)”).
- Examples of the phenol compound (a) include a resin having a phenolic hydroxyl group (hereinafter referred to as “phenol resin") other than the copolymer (A), and a low molecular weight compound having a phenolic hydroxyl group (hereinafter referred to as " Phenolic hydroxyl group-containing low molecular weight compounds "and! /, U)
- phenol resin examples include phenol / formaldehyde condensed nopolac resins, cresol / formaldehyde condensed novolak resins, phenol-naphthol / formaldehyde condensed nopolac resins, and hydroxystyrene homopolymers.
- Examples of the low molecular weight compound containing a phenolic hydroxyl group include 4,4'-dihydroxydiphenylmethane, 4,4'-dihydroxydiphenyl ether, tris (4-hydroxyphenylenomethane), 1,1-bis ( 4-hydroxyphenyl) 1 1-phenylethane, tris (4-hydroxyphenyl) ethane, 1,3-bis [1 (4-hydroxyphenyl) 1-methylethynole] ben Zen, 1,4 bis [1 (4-hydroxyphenyl) 1-methylethynole] benzene, 4,6 bis [1 (4-hydroxyphenyl) 1 methylethyl] 1,1,3-dihydroxybenzene, 1,1— Bis (4-hydroxyphenyl) 1 1- [4— ⁇ 1- (4-hydroxyphenyl) 1-methylethinole ⁇ fenenole] ethane, 1, 1, 2, 2, 2-tetra (4-hydroxyphenyl) e Tan and the like.
- the phenol resin and the phenolic hydroxyl group-containing low molecular weight compound may be used in combination.
- the amount of the phenol compound (a) is preferably from! To 200 parts by mass with respect to 100 parts by mass of the copolymer (A). 10 to 50 parts by mass is most preferable.
- a resin composition containing the phenol compound (a) in the above range can be obtained with sufficient force S to develop sufficient alkali solubility.
- the total amount of the copolymer (A) and the phenol compound (a) in the photosensitive insulating resin composition of the present invention is a component other than the solvent (D) in the composition. Is usually 40 to 95 parts by mass, preferably 50 to 80 parts by mass with respect to 100 parts by mass in total.
- crosslinking agent ( ⁇ ) Acts as a crosslinking component that reacts with the copolymer ( ⁇ ) and the phenol compound (a).
- the compound (B1) containing oxetanyl group (hereinafter referred to as "oxetanyl group-containing compound (B1)") has one or more oxetanyl groups in the molecule. Specific examples thereof include compounds represented by the following formulas (A) to (C).
- R 5 is an alkenoquinol group such as a methyl group, an ethyl group or a propyl group
- R 6 is a methylene group, an ethylene group or a propylene group.
- R 7 is an alkyl group such as a methyl group, an ethyl group, a propyl group, or a hexyl group; an aryl group such as a phenyl group or a xylyl group; a dimethylsiloxane represented by the following formula (i): A residual group; an alkylene group such as a methylene group, an ethylene group or a propylene group; a phenylene group; or a group represented by the following formulas (ii) to (vi), where i is equal to the valence of R 7 ; It is an integer of ⁇ 4. ]
- xy is an integer of 0 50
- Z is a single bond or a divalent group represented by —CH 2 — — C (CH) — — C (CF 3) or SO—.
- Examples of the compounds represented by the above formulas (A) to (C) include bis [(3 ethyl-3-oxetanylmethoxy) methyl] benzene (trade name "XDO" manufactured by Toagosei Co., Ltd.), bis [(3- Ethyl 3-oxetanylmethoxy) methyl phenyl] methane, bis [(3-ethyl-3-oxetanylmethoxy) methyl-phenyl] ether, bis [(3-ethyl-3-oxetanylmethoxy) methyl-phenyl] propane, bis [(3-ethyl) 3 —Oxetanylmethoxy) methi Roof eninole] sulfone, bis [(3-ethyl-3-oxetanylmethoxy) methinolephine ketone], bis [(3-ethyl-3-oxetanylmethoxy) methyl
- compounds having a high molecular weight polyoxetane ring can also be used.
- specific examples include oxetane oligomers (trade name “Oligo-OTT” manufactured by Toagosei Co., Ltd.) and compounds represented by the following chemical formulas (I) to (K). [0067] [Chemical 9]
- p, q and s are each independently an integer of 0 to 10,000.
- the epoxy group-containing compound (B2) (hereinafter referred to as "epoxy group-containing compound (B2)") is not particularly limited as long as it is an epoxy group-containing compound.
- epoxy group-containing compound (B2) phenol nopolac type epoxy resin, cresol nopolac type epoxy resin, bisphenol A type epoxy resin, trisphenol type epoxy resin, tetraphenol type epoxy resin, phenol-xylylene type epoxy resin, Examples thereof include naphtholoxylylene type epoxy resins, phenol-naphthol type epoxy resins, phenol-dicyclopentagen type epoxy resins, alicyclic epoxy resins, aromatic epoxy resins, aliphatic epoxy resins, and epoxycyclohexene resins.
- NC7000 series (trade name), the above phenol-dicyclopenta Xen-1000 series (trade name) manufactured by Nippon Kayaku Co., Ltd. as the Gen-type epoxy resin, Epicoat 801 series (trade name) manufactured by Japan Epoxy Resin Co., Ltd.
- pentaerythritol glycidyl ether manufactured by Nagase Chemtech Co., Ltd., trade name: Denacol E X411
- trimethylolpropane polyglycidyl ether manufactured by Nagase ChemteX Corporation
- Denacol EX321, 321L trimethylolpropane polyglycidyl ether
- Glycerol polyglycidyl ether manufactured by Nagase ChemteX Corporation, trade name: Denacol EX313, EX31
- Neo Nityl glycol diglycidyl ether manufactured by Nagase ChemteX Corp., trade name: Denacol EX211
- ethene / polyethylene glycol diglycidyl ether manufactured by Nagase ChemteX Corp., trade name: Denacol EX810, 850 series
- phenol nopolac type epoxy resin manufactured by Japan Epoxy Resin Co., Ltd., trade name: Epicoat 152, 154
- bisphenol A type epoxy resin manufactured by Japan Epoxy Resin Co., Ltd., trade name: Epicoat 801 Series
- resorcinol diglycidyl ester manufactured by Nagase Chemtech Co., Ltd., trade name: Denacol EX201
- pentaerythritol glycidyl ether manufactured by Nagase Chemtech Co., Ltd., trade name: Denacol EX411
- trimethylolpropane polyglycidyl Ether manufactured by Nagase ChemteX Corporation, trade name: Denacol EX321, 321L
- glycerol polyglycidyl ether manufactured by Nagase ChemteX313, E
- Neopentyl Dalicol Diglycidyl Ether manufactured by Nagase ChemteX Corporation, trade name: Denacol EX 2 11
- Yechen / Polyethylene Glycol Diglycidyl Ether Process made by Nagase ChemteX Corporation, trade name: Denacol EX810) 850 series
- propylene / polypropylene glycol diglycidyl ether manufactured by Nagase ChemteX Corporation, trade name: Denacol EX911, 941, 920 series
- 1,6-hexanediol diglycidyl ether Nagase ChemteX Corporation
- Product name: Denacol EX212 Product name: Denacol EX212
- sorbitol polyglycidyl ether manufactured by Nagase Chemtech Co., Ltd., product name: Denacone EX611, EX612, EX614, EX614B, EX610U
- crosslinking agents (B) can be used singly or in combination of two or more.
- the blending amount of the crosslinking agent (B) in the present invention is preferably 1 to 100 parts by mass, more preferably 100 parts by mass with respect to 100 parts by mass of the total amount of the copolymer (A) and the phenol compound (a). Is 2 to 70 parts by mass. If the blending amount is within the above range, the resulting cured film has sufficient chemical resistance and high / high resolution.
- the crosslinking agent (B) contained in the photosensitive insulating resin composition of the present invention is added in an amount of 100 parts by mass.
- the compound (B1) containing an oxetanyl group is usually 10 to 90 parts by weight, preferably 25 to 75 parts by weight, more preferably 40 to 60 parts by weight, and a compound containing an epoxy group
- the blending amount of (B2) is usually 90 ⁇ 10 parts by mass, preferably 75 to 25 parts by mass, more preferably 60 to 40 parts by mass. It is preferable in terms of sensitivity that the content ratio of the compound (B1) containing an oxetanyl group and the compound (B2) containing an epoxy group is within the above range.
- the photosensitive acid generator (hereinafter also referred to as “acid generator (C)”) used in the present invention is a compound that generates an acid upon irradiation with radiation or the like. Due to the catalytic action of the generated acid, the alkyl ether group or epoxy group in the cross-linking agent (B) reacts with the copolymer (A) and the phenolic compound ( a ) and cures, resulting in a negative pattern.
- the acid generator (C) is not particularly limited as long as it is a compound that generates an acid upon irradiation with radiation or the like, and examples thereof include an onium salt compound, a halogen-containing compound, a diazoketone compound, a sulfone compound, and a sulfonic acid. List compounds, sulfonimide compounds, diazomethane compounds, etc. Specific examples are shown below.
- onium salt compounds examples include odonium salts, sulfonium salts, phosphonium salts, diazonium salts, pyridinium salts, and the like.
- preferred onium salts include diphenyl trifluoromethane sulfonate, diphenol ordonium p toreolense noordone, diphen enore dononium hexaquinoleo oral antimonate, diphenenore venom Hexafnoreo mouth phosphate, diphenenoredonium tetrafluoroborate, triphenylsulfonium trifluoromethanesulfonate, triphenylenosnorehonium p tonorenosenorephonate, triphenenoresnorephonium Hexafnoleo oral antimonate, 4 t-butylphenyl.
- halogen-containing compound examples include a haloalkyl group-containing hydrocarbon compound and a haloalkyl group-containing heterocyclic compound.
- halogen-containing compounds include 1, 10-dibu-mole n-decane, 1,1 bis (4-chlorophenyl) one 2,2,2-trichloroethane, phenyl one Bis (trichloromethyl) s triazine, 4-methoxyphenyl monobis (trichloromethyl) s triazine, styryl mono bis (trichloromethyl) s triazine, naphthyl mono bis (trichloromethyl) s triazine, 2- [2- (5 methyl Furan 2-inole) ethenole] — 4, 6 s-triazine derivatives such as bis (trichloromethyl) s triazine.
- diazoketone compound examples include 1,3 diketo 2 diazo compound, diazobenzoquinone compound, diazonaphthoquinone compound, and the like. Specific examples include 1,2 naphthoquinonediazide 4 sulfonic acid ester compounds of phenols. That's the power S.
- sulfone compounds examples include ⁇ -ketosulfone compounds, ⁇ sulfonylsulfonyl compounds, and ⁇ -diazo compounds of these compounds. Specific examples include mesitylphenacylsulfone and bis (phenacylsulfoninole) methane.
- sulfonic acid compound examples include alkyl sulfonic acid esters, haloalkyl sulfonic acid esters, aryl sulfonic acid esters, imino sulfonates, and the like.
- Preferred examples include benzoin tosylate and pyrogallolto
- sulfonimide compounds include: ⁇ - (trifluoromethylsulfonyloxy) Succinimide, N- (trifluoromethylsulfonyloxy) phthalimide, N- (trifluoromethylsulfonyloxy) diphenylmaleimide, N- (trifluoromethylsulfonyloxy) bicyclo [2.2.1] hepto 5-Nen-2,3-dicarboximide, N- (trifluoromethylsulfonyloxy) naphthylimide and the like.
- diazomethane compound examples include bis (trifluoromethylsulfonyl) diazomethane, bis (cyclohexenoresnorenoninore) diazomethane, bis (phenenoresnorenoninore) diazomethane, and the like.
- these acid generators (C) may be used alone or in combination of two or more.
- the blending amount of the acid generator (C) is such that the copolymer (A) and the phenol compound (a) are used from the viewpoint of ensuring the sensitivity, resolution, pattern shape, etc. of the resin composition according to the present invention.
- the total amount is 100 parts by mass, preferably 0.3;! To 10 parts by mass, and more preferably 0.3 to 5 parts by mass.
- the composition is sufficiently cured to improve the heat resistance of the cured product, and has good transparency to radiation, so that the pattern shape is hardly deteriorated.
- the solvent (D) used in the present invention is added to improve the handleability of the resin composition and to adjust the viscosity and storage stability.
- a solvent (D) is not particularly limited, and examples thereof include ethylene glycol-monomonoethylenoate acetate, ethylene glycol-monomonoethylenoate acetate, and the like.
- Propylene glycol monoalkyl ethers such as propylene glycol nore monoethylenoate, propylene glycol nore mono propenoreate nore, propylene glycol nore monobutenoate nore;
- Propylene glycol dialkyl ethers such as propylene glycolenoresinenoatenore, propylene glycolenoresinenoatenore, propylene glycolenoresin propinoateenole, propylene glycolenoresibutinoateenore;
- Propylene glycolenomonoquinolequinol ether acetates such as lenglycolenomonobutinoreethenoleacetate;
- Cellosolves such as cetylcetosolve, butylcetosolve, and power such as butylcarbitol;
- Lactic acid esters such as methyl lactate, ethyl lactate, n-propyl lactate and isopropyl lactate;
- Aliphatic carboxylic acid esters such as ethyl acetate, n-propyl acetate, isopropyl acetate, n-butyl acetate, isobutyl acetate, n-amyl acetate, isoamyl acetate, isopropyl propionate, n-butyl propionate, isobutyl propionate;
- esters such as methyl 3-methoxypropionate, ethyl 3-methoxypropionate, methyl 3-ethoxypropionate, ethyl 3-ethoxypropionate, methyl pyruvate, ethyl pyruvate;
- Aromatic hydrocarbons such as toluene and xylene
- Ketones such as 2 heptanone, 3 heptanone, 4 monoheptanone, cyclohexanone; amides such as N dimethylformamide, N methylacetamide, N, N dimethylacetamide, N methylpyrrolidone;
- organic solvents such as These organic solvents can be used alone or in combination of two or more.
- the amount of the solvent (D) in the present invention is appropriately selected according to the use of the composition and the coating method to be used, and is not particularly limited as long as the composition can be brought into a uniform state.
- the amount is usually 10 to 80% by mass, preferably 30 to 75% by mass, and more preferably 40 to 70% by mass with respect to the whole.
- a functional silane coupling agent is preferable, and examples thereof include a silane coupling agent having a reactive substituent such as a carboxyl group, a methacryloyl group, an isocyanate group, and an epoxy group. It is done. Specifically, trimethoxysilyl , Butyltrimethoxysilane, ⁇ -isocyanatopropyltriethoxysilane, ⁇ -glycidoxypropynoletrimethoxysilane, ⁇ -, 4 epoxycyclohexenole) ethinoretrimet.
- crosslinked fine particles (F)”) used in the present invention have at least one glass transition temperature (Tg) of the polymer constituting the crosslinked fine particles of 0 ° C. or less.
- Tg glass transition temperature
- a crosslinkable monomer having two or more unsaturated polymerizable groups hereinafter referred to as “crosslinkable monomer”
- crosslinkable monomer can be copolymerized with the crosslinkable monomer, and the One or more other monomers (hereinafter also referred to as “other monomers (f)”) selected so that at least one of Tg of the copolymer constituting the particles (F) is 0 ° C. or lower.
- the other monomer (f) is preferably a monomer having a functional group other than the polymerizable group, such as a functional group such as a carboxyl group, an epoxy group, an amino group, an isocyanate group, or a hydroxyl group.
- a functional group such as a carboxyl group, an epoxy group, an amino group, an isocyanate group, or a hydroxyl group.
- the Tg of the copolymer constituting the crosslinked fine particles (F) is obtained by coagulating and drying the dispersion of the crosslinked fine particles and then using DSC of Seiko Instruments Inc. S SC / 5200H. 0 ° C to 1 Measured at a heating rate of 10 ° C / min in the range of 50 ° C.
- crosslinkable monomer examples include dibutenebenzene, diallyl phthalate, ethylene glycol di (meth) acrylate, propylene glycol di (meth) acrylate, trimethylol propane tri (meth) acrylate, pentaerythritol tri ( Examples thereof include compounds having a plurality of polymerizable unsaturated groups such as (meth) acrylate, polyethylene glycol di (meth) acrylate and polypropylene glycol di (meth) acrylate. Of these, dibulene benzene is preferred.
- Examples of the other monomer (f) include gen compounds such as butadiene, isoprene, dimethylbutadiene, chloroprene, and 1,3-pentagen;
- (Meth) acrylamide N, N, monomethylene bis (meth) acrylamide, N, N, monoethylene bis (meth) acrylamide, N, N, monohexamethylene bis (meth) acrylamide, N hydroxymethyl (meth) acrylamide, Unsaturated amides such as N- (2-hydroxyethyl) (meth) acrylamide, N, N bis (2-hydroxyethyl) (meth) atalinoleamide, crotonic acid amide, and cinnamate amide;
- Aromatic butyl compounds such as styrene, ⁇ -methylstyrene, ⁇ methoxystyrene, ⁇ hydroxystyrene, ⁇ isopropuylphenol;
- Epoxy (meth) acrylates obtained by reaction of bisphenol ⁇ diglycidyl ether, glycol diglycidyl ether, etc. with (meth) acrylic acid, hydroxyalkyl (meth) acrylate, etc .;
- Urethane (meth) acrylates obtained by reaction of hydroxyalkyl (meth) acrylates with polyisocyanates;
- Epoxy group-containing unsaturated compounds such as glycidyl (meth) acrylate and (meth) aryl glycidyl ether;
- Unsaturated acid compounds such as (meth) acrylic acid, itaconic acid, succinic acid // 3- (meth) atari mouth kichetil, maleic acid drophthalic acid- ⁇ (meth) atarilochecheil;
- Amino group-containing unsaturated compounds such as dimethylamino (meth) acrylate and jetylamino (meth) acrylate;
- Amide group-containing unsaturated compounds such as (meth) acrylamide and dimethyl (meth) acrylamide;
- hydroxyl group-containing unsaturated compounds such as hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate and hydroxybutyl (meth) acrylate.
- hydroxyethyl (meth) acrylate hydroxypropyl (meth) acrylate
- hydroxybutyl (meth) acrylate examples thereof include hydroxyl group-containing unsaturated compounds such as hydroxyethyl (meth) acrylate, hydroxypropyl (meth) acrylate and hydroxybutyl (meth) acrylate.
- butadiene, isoprene, (meth) acrylonitrile, (meth) acrylic acid vinyl ester, styrene, p-hydroxystyrene, p-isopropylenephenol, and the like are preferred. Particularly preferred.
- At least one gen compound such as butadiene, at least one hydroxyl group-containing unsaturated compound, and at least one unsaturated acid compound. It is preferable to use butadiene as the gen compound. Hydroxybutyl (meth) acrylate is the preferred unsaturated group containing hydroxyl groups. (Meth) acrylic acid is the preferred unsaturated acid compound! / ,.
- the ratio of the crosslinkable monomer and the other monomer (f) constituting the crosslinked fine particles (F) is such that the crosslinkable monomer is;! To 20% by mass with respect to the total monomers used for copolymerization; It is desirable that the monomer (f) is used in an amount of 80 to 99% by mass, preferably 2 to 10% by mass of the crosslinkable monomer and 90 to 98% by mass of the other monomer (f).
- Jen compound as the other monomer (f), in particular butadiene, for the total monomers used in the copolymerization preferably 20 to 80 weight 0/0, more preferably the use of 30 to 70 weight 0/0, rubber In the form of soft and cross-linked fine particles.
- the content is preferably from! To 79% by mass, more preferably from 5 to 68%, based on 100% by mass of all monomers used for copolymerization. % By mass.
- the polarity can be varied, so that compatibility with various resins can be enhanced.
- the crosslinked fine particles are uniformly dispersed in the system, it is possible to obtain an insulating film excellent in insulation and crack resistance.
- the content thereof is preferably 1 to 20% by mass, more preferably 2 to 10% by mass, with respect to 100% by mass of all monomers used for copolymerization. is there.
- unsaturated acid compounds are copolymerized in a content within the above range, these compounds have acid groups and thus have high solubility or dispersibility in alkanes. A membrane can be obtained.
- the average particle diameter of the crosslinked fine particles (F) is usually 30 to 500 nm, preferably 40 to 20 Onm, more preferably 50 to 120 nm.
- the method for controlling the particle size of the crosslinked fine particles is not particularly limited, but if the crosslinked fine particles are synthesized by emulsion polymerization, the number of micelles during emulsion polymerization is controlled by the amount of emulsifier used, An example is a method of controlling the particle size.
- the average particle diameter is a value measured by diluting a dispersion of crosslinked fine particles according to a conventional method using a light scattering flow distribution measuring device LPA-3000 manufactured by Otsuka Electronics.
- the amount of the cross-linked fine particles (F) is preferably 0.;! To 50 parts by mass with respect to 100 parts by mass in total of the copolymer (A) and the phenol compound (a). Yes, preferably 1 to 20 parts by mass.
- the resulting cured film has thermal shock resistance and heat resistance and exhibits good compatibility (dispersibility) with other components.
- various additives such as a sensitizer, a leveling agent, and other acid generators are included to the extent that the properties of the composition are not impaired! You can also.
- the conventional radiation-sensitive insulating resin composition may contain liquid rubber for the purpose of improving adhesion.
- liquid rubber often mean those that have fluidity at room temperature, for example, acrylic rubber (ACM), acrylonitrile 'butadiene rubber (NBR), atari mouth nitrile' atarylate 'butadiene rubber (NBA) Etc. are known.
- ACM acrylic rubber
- NBR acrylonitrile 'butadiene rubber
- NBA atari mouth nitrile' atarylate 'butadiene rubber
- the radiation-sensitive resin composition of the present invention is characterized by containing essentially no liquid rubber.
- the method for preparing the photosensitive insulating resin composition of the present invention is not particularly limited, and a normal preparation method can be applied. It can also be prepared by placing each component in a sample bottle, completely plugging it, and stirring it on a wave rotor.
- a cured product obtained by curing the photosensitive insulating resin composition according to the present invention is excellent in electrical insulation, thermal shock, adhesion, and the like. Therefore, the photosensitive insulating resin composition of the present invention is In particular, it can be suitably used as a material for a surface protective film or an interlayer insulating film of a semiconductor element.
- the cured product (cured film) according to the present invention can be used to form a cured product as follows, for example.
- the photosensitive insulating resin composition is applied to a support such as a copper foil with a resin, a copper-clad laminate, a silicon wafer with a metal sputtered film, or an alumina substrate, and dried to obtain a solvent or the like. Is volatilized to form a coating film. Thereafter, the film is exposed through a desired mask pattern, and further subjected to a heat treatment (hereinafter referred to as “PEB”), whereby the copolymer (A), the phenol compound (a), and a crosslinking agent ( ⁇ ).
- PEB heat treatment
- the desired pattern can be obtained by developing with an alkaline developer to dissolve and remove the unexposed areas. Thereafter, further heat treatment can be performed to obtain a cured film having insulating film characteristics.
- a coating method such as a dating method, a spray method, a bar coat method, a roll coat method, or a spin coat method can be used.
- the coating thickness can be appropriately controlled by adjusting the coating means and the solid content concentration and viscosity of the composition.
- Examples of radiation used for exposure include ultraviolet rays such as low-pressure mercury lamps, high-pressure mercury lamps, metal halide lamps, g-line steppers and i-line steppers, electron beams, and laser beams.
- the exposure amount is appropriately selected according to the light source used, the resin film thickness, etc. For example, in the case of UV irradiation from a high-pressure mercury lamp, if the resin film thickness is 10 to 50 111, 1 000—50, 000 j / m 2 Degree.
- PEB processing conditions after exposure vary depending on the amount of resin composition blended and the film thickness used, etc. ⁇ Normally 70 ⁇ ; 150 ° C, preferably 80 ⁇ ; 120 ° C; is there.
- Examples of the developing method using an alkaline developer include a shower developing method, a spray developing method, an immersion developing method, and a nozzle developing method, and the developing conditions are usually 20 to 40 ° C.
- alkaline developer examples include alkaline compounds such as sodium hydroxide, potassium hydroxide, ammonia water, tetramethylammonium hydroxide, and choline in water. It is possible to list alkaline aqueous solutions prepared so as to dissolve to a concentration of about 1 to 10% by mass. An appropriate amount of a water-soluble organic solvent such as methanol or ethanol, a surfactant, or the like can be added to the alkaline aqueous solution. After developing with an alkaline developer, the patterned film is washed with water and dried.
- alkaline compounds such as sodium hydroxide, potassium hydroxide, ammonia water, tetramethylammonium hydroxide, and choline in water. It is possible to list alkaline aqueous solutions prepared so as to dissolve to a concentration of about 1 to 10% by mass. An appropriate amount of a water-soluble organic solvent such as methanol or ethanol, a surfactant, or the like can be added to the alkaline aqueous
- the heat treatment conditions after development are not particularly limited, but depending on the use of the cured product, the coated film subjected to heat treatment at a temperature of 50 to 200 ° C for about 30 minutes to 10 hours. Can harden S.
- the heat treatment after the development may be carried out in two or more steps in order to sufficiently cure the obtained patterned coating film or prevent its deformation. For example, in the first stage, it is heated for about 5 minutes to 2 hours at a temperature of 120 ° C, and in the second stage, it is heated for about 10 minutes to 10 hours at a temperature of 80 to 200 ° C.
- the coating can also be cured. Under such curing conditions, a hot plate, nano, infrared furnace or the like can be used as a heating facility.
- the cured product according to the present invention is excellent in electrical insulation, and its resistance value after migration test is preferably 10 8 ⁇ or more, more preferably 10 9 ⁇ or more, further preferably 10 ⁇ ⁇ or more. is there.
- the migration test specifically refers to a test performed as follows.
- the resin composition is applied to the evaluation substrate shown in Fig. 3 and heated at 110 ° C for 3 minutes using a hot plate to produce a resin coating having a thickness of 10 ⁇ on the copper foil. . Thereafter, the resin coating film is cured by heating at 190 ° C for 1 hour using a convection oven to obtain a cured film.
- This evaluation board with a cured film is put into the migration evaluation system (AEI, EHS—221MD, manufactured by Tabai Espec Co., Ltd.), and the temperature is 121 ° C, the humidity is 85%, the pressure is 1.2 atm, and the applied voltage is 5V for 200 hours. After the treatment, the resistance value ( ⁇ ) of the evaluation board is measured.
- AEI migration evaluation system
- the cured product according to the present invention is excellent in thermal shock resistance, and is from -65 ° C / 30 minutes to 150 ° C / 30 minutes.
- the number of cycles until cracks occur in the cured product is preferably 1000 cycles or more, more preferably 1500 cycles or more, and even more preferably 2000 or more.
- the thermal shock test specifically refers to a test performed as follows.
- the resin composition was applied to the evaluation substrate shown in FIG. 1 and FIG. Heat at 0 ° C for 3 minutes to produce a resin coating with a thickness of 10 ⁇ on the copper foil. Then, it is heated at 190 ° C for 1 hour using a convection oven to obtain a cured film.
- the evaluation substrate with a cured film is subjected to a resistance test using a thermal shock tester (TSA-40L, manufactured by Tabay Espec Co., Ltd.) at a cycle of 65 ° C / 30 minutes to 150 ° C / 30 minutes. Check the number of cycles until cracks and other defects occur in the cured film every 100 cycles. Therefore, the more the number of cycles until cracks and other defects occur in the cured film, the more excellent the thermal shock resistance of the cured film.
- TSA-40L thermal shock tester
- the semiconductor element according to the present invention has a cured film formed as described above.
- This hardened film can be suitably used as a surface protective film or an interlayer insulating film in a semiconductor element.
- Examples of the semiconductor element include a semiconductor element (substrate with circuit) force S shown in Figs.
- a semiconductor element (substrate with circuit) force S shown in Figs. In the substrate with circuit shown in FIG. 4, first, metal pads 12 are formed in a pattern on a substrate 11, and then an insulating film (cured film) 13 is formed in a pattern using the resin composition. Next, the metal wiring 14 is formed in a pattern, and further an insulating film (cured film) 16 is formed.
- the circuit board shown in FIG. 5 has a metal wiring 14 formed in a pattern on the circuit board shown in FIG. 4, and then an insulating film (hardened film) 16 using the resin composition. Is obtained.
- a resin composition was applied to a silicon wafer or a silicon wafer sputtered with copper, and heated on a hot plate at 120 ° C. for 5 minutes to prepare a uniform resin film having a thickness of ⁇ . Then, using an aligner (MA-150 manufactured by Suss Mictotec), the ultraviolet ray from the high-pressure mercury lamp was exposed so that the exposure amount at a wavelength of 350 nm was 2,000 j / m 2, and the hot play was performed. And then heated (PEB) at 110 ° C for 3 minutes. Next, the resin coating film was cured by heating at 200 ° C. for 1 hour using a convection oven to obtain a cured film.
- an aligner MA-150 manufactured by Suss Mictotec
- This cured film was treated with a pressure tacker test apparatus (manufactured by Tabai Espec Co., Ltd.) for 168 hours under the conditions of a temperature of 121 ° C, a humidity of 100%, and a pressure of 2.1 atm.
- the adhesion before and after the test was evaluated by performing a cross-cut test (cross cut tape method) according to JIS K 5400.
- a resin composition was applied on a silicon substrate to form an insulating film, and a copper foil 1 having a pattern as shown in FIG. 3 was formed thereon to produce a base material 3 for electrical insulation evaluation.
- the copper foil 1 has a line spacing and line width of 20.
- a resin composition is further applied to this base material 3 for electrical insulation evaluation, heated at 110 ° C. for 3 minutes using a hot plate, and a resin coating having a thickness of 10 m on the copper foil 4 is formed. Produced.
- the UV light from the high-pressure mercury lamp was exposed so that the exposure amount at a wavelength of 350 nm was 2,000 j / m 2, and heated at 110 ° C for 3 minutes using a hot plate. (PEB).
- the resin coating film was cured by heating at 200 ° C. for 1 hour using a convection oven to obtain a base material having a cured film.
- This substrate was put into a migration evaluation system (manufactured by Tabai Espec Co., Ltd.) and treated for 200 hours under conditions of a temperature of 121 ° C, a humidity of 85%, a pressure of 1.2 atm, and an applied voltage of 5V. Thereafter, the resistance value ( ⁇ ) was measured to confirm the insulation of the upper cured film.
- a resin composition is applied to a base material 3 for thermal shock evaluation having a patterned copper foil 1 on a substrate 2 as shown in FIGS. 1 and 2, and heated at 110 ° C. for 3 minutes using a hot plate. Then, a resin coating film having a thickness of 10 m on the copper foil 1 was produced. After that, using an aligner (MA-150 manufactured by Suss Microtec), UV light from a high-pressure mercury lamp was exposed so that the exposure amount at a wavelength of 350 nm was 2,000 j / m 2, and the temperature was 110 ° C using a hot plate. Heated (PEB) for 3 minutes. Next, the resin coating film was cured by heating at 200 ° C.
- MA-150 manufactured by Suss Microtec
- p- t Butoxystyrene and styrene in a molar ratio of 80:20 were dissolved in a total of 100 parts by mass in 150 parts by mass of polypropylene alcohol monomethyl ether, and the reaction temperature was maintained at 70 ° C under a nitrogen atmosphere. Polymerization was carried out for 10 hours using 4 parts by mass of azobisisobutyronitrile. Thereafter, sulfuric acid was added to the reaction solution, and the reaction temperature was kept at 90 ° C. to react for 10 hours, and p-t butoxystyrene was deprotected and converted to hydroxystyrene.
- the molecular weight of the copolymer (A-1) was measured by gel permeation chromatography (GPC).
- the polystyrene-reduced weight average molecular weight (Mw) was 10,000, and the weight average molecular weight (Mw ) And the number average molecular weight (Mn) (Mw / Mn) was 3.5.
- Mw weight average molecular weight
- Mn number average molecular weight
- Mw of this copolymer (A-2) is 10,000, Mw / Mn is 3.5, p hydroxystyrene
- copolymer molar ratio of: styrene: methyl methacrylate was 80:10:10.
- a p-hydroxystyrene homopolymer (hereinafter referred to as “homopolymer (A-3)”) was obtained in the same manner as in Synthesis Example 1 except that it was dissolved in 150 parts by mass. [0125]
- the homopolymer (A-3) had Mw of 10,000 and Mw / Mn of 3.5.
- copolymer (A4) a p-hydroxystyrene / methacrylic acid copolymer
- Mw of this copolymer (A-4) is 10,000, Mw / Mn is 3 ⁇ 7, p hydroxystyrene
- the copolymerization molar ratio of methacrylic acid was 90:10.
- m-Talesol and p-Talesol are mixed in a molar ratio of 60:40, to which formalin is added and condensed by a conventional method using a oxalic acid catalyst.
- “Phenol resin (a-1)” and! /, U) were obtained.
- Copolymer (A), phenolic compound (a), crosslinking agent ( ⁇ ), photoacid generator (C), adhesion aid ( ⁇ ) and crosslinked fine particles (F) shown in Table 1 are used as solvent (D). Each was dissolved in the amounts shown in Table 1 to prepare a photosensitive insulating resin composition. Using this resin composition, a cured film was produced according to the method described in the above evaluation method.
- Resin compositions having the component strengths shown in Table 1 and cured films thereof were prepared in the same manner as in Example 1.
- the properties of the resin composition and its cured film were measured in the same manner as in Example 1. The results are shown in Table 2.
- A— Copolymer consisting of 4: p hydroxystyrene / methacrylic acid 90/10 (molar ratio)
- Methyl ⁇ oxetane manufactured by Toagosei Co., Ltd., trade name: OXT—221)
- C-1 4- (phenylthio) phenyldiphenylsulfonium tris (pentafluoroethyl) trifluorophosphate (trade name: CPI- 210S, manufactured by Sanpro Corporation)
- a cured product excellent in insulation, thermal shock resistance, adhesion, etc. can be formed, and in particular, insulation, thermal shock resistance, adhesion, etc.
- a semiconductor element having an excellent interlayer insulating film and surface protective film can be obtained.
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Description
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US12/439,006 US20090239080A1 (en) | 2006-08-29 | 2007-07-23 | Photosensitive insulation resin composition and cured product thereof |
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Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2010122654A (ja) * | 2008-10-24 | 2010-06-03 | Jsr Corp | 感放射線性樹脂組成物およびその硬化物 |
WO2011016227A1 (ja) | 2009-08-04 | 2011-02-10 | 日本曹達株式会社 | スターポリマー |
WO2011016226A1 (ja) | 2009-08-04 | 2011-02-10 | 日本曹達株式会社 | 高分子量共重合体 |
JP2013190698A (ja) * | 2012-03-14 | 2013-09-26 | Asahi Kasei E-Materials Corp | 感光性樹脂組成物、硬化レリーフパターンの製造方法、及び半導体装置 |
WO2014103516A1 (ja) * | 2012-12-27 | 2014-07-03 | 日立化成株式会社 | 感光性樹脂組成物、感光性フィルム及びレジストパターンの形成方法 |
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JP2015132677A (ja) * | 2014-01-10 | 2015-07-23 | 日立化成株式会社 | 感光性樹脂組成物、感光性エレメント、半導体装置及びレジストパターンの形成方法 |
CN105934713A (zh) * | 2014-01-30 | 2016-09-07 | 日本化药株式会社 | 活性能量射线固化型树脂组合物以及使用该组合物的显示元件用间隔物和/或滤色片保护膜 |
TWI702470B (zh) * | 2015-12-25 | 2020-08-21 | 日商富士軟片股份有限公司 | 感光化射線性或感放射線性樹脂組成物、感光化射線性或感放射線性膜、圖案形成方法及電子元件的製造方法 |
US11009791B2 (en) | 2015-12-25 | 2021-05-18 | Fujifilm Corporation | Actinic ray-sensitive or radiation-sensitive resin composition, actinic ray-sensitive or radiation-sensitive film, pattern forming method, and method for manufacturing electronic device |
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KR20090055025A (ko) | 2009-06-01 |
JP4983798B2 (ja) | 2012-07-25 |
JPWO2008026401A1 (ja) | 2010-01-14 |
US20090239080A1 (en) | 2009-09-24 |
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