WO2016031554A1 - 接着フィルム - Google Patents
接着フィルム Download PDFInfo
- Publication number
- WO2016031554A1 WO2016031554A1 PCT/JP2015/072717 JP2015072717W WO2016031554A1 WO 2016031554 A1 WO2016031554 A1 WO 2016031554A1 JP 2015072717 W JP2015072717 W JP 2015072717W WO 2016031554 A1 WO2016031554 A1 WO 2016031554A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- adhesive film
- acid
- film
- filler
- resin
- Prior art date
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- 239000002313 adhesive film Substances 0.000 title claims abstract description 84
- 229920005989 resin Polymers 0.000 claims abstract description 64
- 239000011347 resin Substances 0.000 claims abstract description 64
- -1 alicyclic hydrocarbon Chemical class 0.000 claims abstract description 35
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 15
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 13
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 10
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 9
- 239000003505 polymerization initiator Substances 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims description 63
- 239000002245 particle Substances 0.000 description 56
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 40
- 239000010408 film Substances 0.000 description 38
- 239000004065 semiconductor Substances 0.000 description 35
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 29
- 229920000642 polymer Chemical group 0.000 description 22
- 239000000203 mixture Substances 0.000 description 19
- 239000000377 silicon dioxide Substances 0.000 description 19
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 18
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- 238000002844 melting Methods 0.000 description 16
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- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 15
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- 238000000034 method Methods 0.000 description 13
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- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 12
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 7
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- 0 CC(*)(c(cc1)ccc1Oc(cc1)cc(C(N2*N(C(C=C3)=O)C3=O)=O)c1C2=O)c(cc1)ccc1Oc(cc1)cc(C(N2*=IN(C(C=C3)=O)C3=O)=O)c1C2=O Chemical compound CC(*)(c(cc1)ccc1Oc(cc1)cc(C(N2*N(C(C=C3)=O)C3=O)=O)c1C2=O)c(cc1)ccc1Oc(cc1)cc(C(N2*=IN(C(C=C3)=O)C3=O)=O)c1C2=O 0.000 description 6
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- 229910052718 tin Inorganic materials 0.000 description 5
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 4
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 4
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- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 4
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- 229910000846 In alloy Inorganic materials 0.000 description 3
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- 239000004793 Polystyrene Substances 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910001128 Sn alloy Inorganic materials 0.000 description 3
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 3
- 125000002723 alicyclic group Chemical group 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 230000005496 eutectics Effects 0.000 description 3
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
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- 125000001072 heteroaryl group Chemical group 0.000 description 3
- 125000000623 heterocyclic group Chemical group 0.000 description 3
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- HGTUJZTUQFXBIH-UHFFFAOYSA-N (2,3-dimethyl-3-phenylbutan-2-yl)benzene Chemical compound C=1C=CC=CC=1C(C)(C)C(C)(C)C1=CC=CC=C1 HGTUJZTUQFXBIH-UHFFFAOYSA-N 0.000 description 2
- WQJUBZMZVKITBU-UHFFFAOYSA-N (3,4-dimethyl-4-phenylhexan-3-yl)benzene Chemical compound C=1C=CC=CC=1C(C)(CC)C(C)(CC)C1=CC=CC=C1 WQJUBZMZVKITBU-UHFFFAOYSA-N 0.000 description 2
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 2
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 2
- NKBWMBRPILTCRD-UHFFFAOYSA-N 2-Methylheptanoic acid Chemical compound CCCCCC(C)C(O)=O NKBWMBRPILTCRD-UHFFFAOYSA-N 0.000 description 2
- MIRQGKQPLPBZQM-UHFFFAOYSA-N 2-hydroperoxy-2,4,4-trimethylpentane Chemical compound CC(C)(C)CC(C)(C)OO MIRQGKQPLPBZQM-UHFFFAOYSA-N 0.000 description 2
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 description 2
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- YUTHQCGFZNYPIG-UHFFFAOYSA-N 1-[2-(2-methylprop-2-enoyloxy)ethyl]cyclohexane-1,2-dicarboxylic acid Chemical compound CC(=C)C(=O)OCCC1(C(O)=O)CCCCC1C(O)=O YUTHQCGFZNYPIG-UHFFFAOYSA-N 0.000 description 1
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 1
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- 125000002868 norbornyl group Chemical group C12(CCC(CC1)C2)* 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 235000021313 oleic acid Nutrition 0.000 description 1
- 150000002898 organic sulfur compounds Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 description 1
- 239000013034 phenoxy resin Substances 0.000 description 1
- 229920006287 phenoxy resin Polymers 0.000 description 1
- BNMMXDHVMLZQGP-UHFFFAOYSA-N phosphono prop-2-eneperoxoate Chemical compound OP(O)(=O)OOC(=O)C=C BNMMXDHVMLZQGP-UHFFFAOYSA-N 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 150000003022 phthalic acids Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- IUGYQRQAERSCNH-UHFFFAOYSA-N pivalic acid Chemical compound CC(C)(C)C(O)=O IUGYQRQAERSCNH-UHFFFAOYSA-N 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000233 poly(alkylene oxides) Polymers 0.000 description 1
- 229920003192 poly(bis maleimide) Polymers 0.000 description 1
- 229920003055 poly(ester-imide) Polymers 0.000 description 1
- 229920003207 poly(ethylene-2,6-naphthalate) Polymers 0.000 description 1
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920002721 polycyanoacrylate Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002689 polyvinyl acetate Polymers 0.000 description 1
- 239000011118 polyvinyl acetate Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 229920001290 polyvinyl ester Polymers 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010944 pre-mature reactiony Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 150000003141 primary amines Chemical group 0.000 description 1
- ULWHHBHJGPPBCO-UHFFFAOYSA-N propane-1,1-diol Chemical compound CCC(O)O ULWHHBHJGPPBCO-UHFFFAOYSA-N 0.000 description 1
- 229940107700 pyruvic acid Drugs 0.000 description 1
- 238000010526 radical polymerization reaction Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 239000006254 rheological additive Substances 0.000 description 1
- 238000007142 ring opening reaction Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- RHHHGLCTQKINES-UHFFFAOYSA-M sodium;5-amino-2-methoxy-4-sulfobenzenesulfonate Chemical compound [Na+].COC1=CC(S(O)(=O)=O)=C(N)C=C1S([O-])(=O)=O RHHHGLCTQKINES-UHFFFAOYSA-M 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920006132 styrene block copolymer Polymers 0.000 description 1
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- TXDNPSYEJHXKMK-UHFFFAOYSA-N sulfanylsilane Chemical compound S[SiH3] TXDNPSYEJHXKMK-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 description 1
- TUNFSRHWOTWDNC-HKGQFRNVSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCC[14C](O)=O TUNFSRHWOTWDNC-HKGQFRNVSA-N 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229940005605 valeric acid Drugs 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J201/00—Adhesives based on unspecified macromolecular compounds
- C09J201/02—Adhesives based on unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/50—Assembly of semiconductor devices using processes or apparatus not provided for in a single one of the groups H01L21/18 - H01L21/326 or H10D48/04 - H10D48/07 e.g. sealing of a cap to a base of a container
- H01L21/52—Mounting semiconductor bodies in containers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/6835—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L21/6836—Wafer tapes, e.g. grinding or dicing support tapes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L24/83—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/085—Copper
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/28—Nitrogen-containing compounds
- C08K2003/282—Binary compounds of nitrogen with aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/326—Applications of adhesives in processes or use of adhesives in the form of films or foils for bonding electronic components such as wafers, chips or semiconductors
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
- C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2400/00—Presence of inorganic and organic materials
- C09J2400/10—Presence of inorganic materials
- C09J2400/16—Metal
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2433/00—Presence of (meth)acrylic polymer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2221/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof covered by H01L21/00
- H01L2221/67—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere
- H01L2221/683—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L2221/68304—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support
- H01L2221/68377—Apparatus for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components; Apparatus not specifically provided for elsewhere for supporting or gripping using temporarily an auxiliary support with parts of the auxiliary support remaining in the finished device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/80—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected
- H01L2224/83—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector
- H01L2224/838—Bonding techniques
- H01L2224/8385—Bonding techniques using a polymer adhesive, e.g. an adhesive based on silicone, epoxy, polyimide, polyester
Definitions
- the present invention relates to an adhesive film, and specifically, an adhesive film, particularly an adhesive film suitably used for manufacturing an electronic device, an integrated circuit, a semiconductor element, a passive element, a solar cell, a solar module, or a light emitting diode.
- an adhesive film particularly an adhesive film suitably used for manufacturing an electronic device, an integrated circuit, a semiconductor element, a passive element, a solar cell, a solar module, or a light emitting diode.
- an adhesive film particularly an adhesive film suitably used for manufacturing an electronic device, an integrated circuit, a semiconductor element, a passive element, a solar cell, a solar module, or a light emitting diode.
- the semiconductor package structure mounted inside is required to further improve the mounting efficiency within a limited mounting area.
- chip size packages and ball grid arrays with a surface terminal arrangement have increased, and by mounting multiple semiconductor elements in a single package, it can be installed in portable devices etc.
- a typical example is the appearance of a stacked package aimed at adding added value to a memory to be used or increasing the memory capacity.
- members used in the semiconductor package are made thinner.
- various members such as semiconductor elements, interposer substrates, sealing resins, die attach materials for bonding semiconductor elements and interposer substrates are thin. It has become.
- the warpage of the semiconductor chip and the substrate occurs due to the difference in the coefficient of linear expansion of the semiconductor chip, adhesive, resist substrate, etc. There is concern about deterioration of reflow resistance.
- the present invention has been made in view of such a problem, and does not give a large stress to the adherends, and can also reduce the warpage caused by the difference in the linear expansion coefficient between the adherends, and is reliable. Is to provide a higher adhesive film.
- the present invention has a structure in which (A) an alicyclic hydrocarbon having 5 to 8 carbon atoms is substituted with at least four alkyl groups having 4 to 12 carbon atoms, and further has at least one curable site.
- a curable resin and (B) a polymerization initiator having a half-life temperature of 1 hour or more of 140 ° C., It is related with the adhesive film characterized by including.
- this invention relates to the said adhesive film characterized by having (A) the structure represented by following General formula (1).
- General formula (1)
- the present invention also relates to the above adhesive film, wherein (A) is contained in an amount of 50% by mass or more of the resin component constituting the film.
- the present invention also relates to the above adhesive film, further comprising a filler.
- the present invention relates to an adhesive film with a dicing tape, wherein the adhesive film is laminated on a dicing tape.
- the present invention succeeded in providing a highly reliable adhesive film excellent in stress relaxation and moisture resistance, and a semiconductor device using the adhesive film.
- Adhesive film with dicing tape using the adhesive of the present invention Cross-sectional schematic diagram of an adhesive film with dicing tape in a different form from FIG.
- “about” means including 1 to 10% of the number to which “about” is given.
- “about” 100 ° C. means a range of 90 to 110 ° C. in consideration of measurement error and the like.
- a numerical range such as “1-20” indicates a numerical value of 1-20.
- the curable resin (A) of the present invention has a structure in which an alicyclic hydrocarbon having 5 to 8 carbon atoms is substituted with at least four alkyl groups having 4 to 12 carbon atoms.
- Such a structure has a long arm alkyl long chain, and therefore has an excellent stress relaxation effect.
- it since it is formed from an alicyclic group and an aliphatic group, it has excellent moisture resistance.
- the alkyl group has 12 or less carbon atoms in that both moisture resistance and adhesiveness can be achieved.
- An alicyclic hydrocarbon having 9 or more hydrocarbons may be used, but is not practical because it is difficult to synthesize.
- C 36 a structure including a cyclohexane-based core and four long arms attached to the core (hereinafter referred to as “C 36 ” in the specification) as shown by the following general formula (1) is preferable.
- the curable resin (A) of the present invention further needs to have at least one curable site.
- examples of the structure that can be a “curable site” include thiol, vinyl ester, acrylate, methacrylate, norbornyl, maleimide, and nadiimide.
- Thiol has excellent adhesion when the adherend and filler are copper.
- Vinyl esters are excellent in fast curability and adhesion.
- Acrylate and methacrylate are excellent in that they are less susceptible to polymerization inhibition by moisture and base and do not cause dark reaction.
- Maleimide and nadiimide are excellent in that the LUMO energy level is low and the reactivity as a dienophile in the Diels-Alder reaction is high.
- any structure may be provided between the hydrocarbon structure substituted with an alkyl group and the curable site.
- a structure derived from an unsubstituted or substituted aliphatic, alicyclic, alkenyl, aryl, heteroaryl, siloxane, poly (butadiene-coacrylonitrile) and poly (alkylene oxide), an imide structure, A combination thereof may also be used.
- a cyclic structure or an imide structure is preferable in terms of excellent heat resistance.
- Aliphatic groups and alicyclic groups are preferable in terms of excellent moisture resistance.
- imide means a functional group having two carbonyl groups bonded to a primary amine or ammonia.
- the general formula of the imide of the present invention is as shown in the following general formula (2).
- R, R ′, and R ′′ each represents an arbitrary functional group.
- Examples of the imide structure incorporated in the compound include the following, but are not limited thereto.
- R represents an arbitrary functional group.
- maleimide refers to an N-substituted maleimide having a structure represented by the following general formula (4).
- R is an aromatic, heteroaromatic, aliphatic, or polymer moiety.
- X 1 and X 2 are each independently H or an alkyl group having 1 to 6 carbon atoms.
- bismaleimide or “BMI” means a polyimide compound in which two maleimide moieties are linked. That is, it is a polyimide compound having a general structure represented by the following general formula (5).
- R is an aromatic, heteroaromatic, aliphatic, or polymer moiety.
- X 3 to X 6 are each independently H or an alkyl group having 1 to 6 carbon atoms.
- heterocyclic group is a cyclic, ie, ring-structure-containing group that includes one or more heteroatoms (eg, N, O, S, etc.) as part of the ring structure, and 3 to 14
- heteroatoms eg, N, O, S, etc.
- substituted heterocyclic group refers to a heterocyclic group having one or more substituents as described above.
- thermosetting refers to a chemical reaction such as epoxy ring opening, radical polymerization, etc. caused by heating to form a three-dimensional cross-linked structure between the molecules and cure, resulting in greater strength and less It refers to the irreversible nature of becoming soluble.
- a thermosetting resin is a resin that exhibits the above properties, and can often be cured by irradiation (eg, visible light, UV light, electron beam irradiation, ion beam irradiation, or X-ray irradiation). It is.
- Examples of the curable resin according to the present invention include the following general formula (6).
- the curable resin may be used independently in the film, or may be combined with other adhesive compounds and resins.
- the curable resin may be used as the only thermosetting resin in the adhesive composition.
- one or more curable resins can be used in combination, and curable resins and other thermosetting resins can be used together.
- the film when the curable resin has a mass average molecular weight of 1,000 or more, the film is easily formed, preferably 2,000 or more, and more preferably 3,000 or more. Moreover, it is excellent in sclerosis
- hardenability as a mass mean molecular weight is 30,000 or less, 10,000 or less are more preferable, and 5,000 or less are still more preferable.
- the mass average molecular weight can be measured by gel permeation chromatography (GPC) (in terms of standard polystyrene).
- the curable resin is present in an amount from 2 to 98% by weight, based on the total weight of the resin components in the film.
- the curable resin is contained in an amount of 50% by mass or more of the resin component constituting the film, it is preferable in terms of excellent stress relaxation and excellent moisture resistance.
- Polymerization initiator (B) examples of the polymerization initiator (B) in the present invention include radical polymerization initiators, and the radical polymerization initiator is typically 0.1% by mass to 5% by mass based on the total mass of the resin components in the film. % Can be present in the composition.
- a radical polymerization initiator is a species that acts as a reactant in the initiation stage of a radical chain reaction but does not participate in any process of propagation. As used herein, any that, when exposed to sufficient energy (eg, light, heat, or the like), decomposes into two parts that are not charged but each have at least one unpaired electron The chemical species.
- the radical initiator include azo compounds, peroxides, and hydrocarbon radical initiators. Hydrocarbon radical initiators are disclosed in, for example, Japanese Patent Application Laid-Open No. 2009-203384, and are preferable from the viewpoint of excellent electric characteristics of the obtained effect resin composition.
- Preferred radical polymerization initiators contemplated for use in practicing the present invention have a one hour half-life temperature of 140 ° C or higher. More preferably, it is 170 degreeC or more, More preferably, it is 200 degreeC or more.
- the upper limit of the one-hour half-life temperature of the radical polymerization initiator is not particularly limited, but is preferably 250 ° C. or lower.
- radical polymerization initiators examples include 3,4-di-tert-butyl-2,2,5,5-tetramethylhexane, di-tert-amyl peroxide, di-tert-butyl peroxide, 3, 6,9-triethyl-3,6,9-trimethyl-1,4,7-triperoxonane, di-t-butyl peroxide, 2,5-dimethyl-2,5-di (t-butylperoxy) Hexin-3, p-menthane hydroperoxide, isopropylcumyl hydroperoxide, 1,1,3,3-tetramethylbutyl hydroperoxide, 2,4,5,7-tetramethyl-4,5-diphenyloctane Diisopropylbenzene hydroperoxide, 1,1,3,3-tetramethylbutyl hydroperoxide, tert-amyl Idroperoxide, cumene hydroperoxide, 4,5-dimethyl-4,5-diphenyloctane,
- a polymer component may be included in order to facilitate the formation of a film.
- the polymer component can further contribute to stress relaxation.
- the polymer component may be any as long as it is easy to handle and has compatibility with the curable resin.
- suitable polymer components include thermoplastic resins that are hydrophobic and soluble in toluene. When having compatibility with the curable resin, it is considered that both the thermoplastic resin and the curable resin are soluble in the same solvent, and examples of such a solvent include aromatic solvents. Examples of useful solvents include toluene and xylene.
- the styrene and butadiene block copolymers useful in the present invention may be diblock copolymers having styrene polymer segments and butadiene polymer segments covalently bonded together.
- the block copolymer of styrene and butadiene useful in the present invention may be a triblock copolymer, having two segments of styrene polymer and one segment of butadiene polymer, each segment of styrene polymer being shared with segments of butadiene polymer Are connected.
- the additional styrene and butadiene block copolymer useful in the present invention may be a block copolymer of styrene and butadiene in which the butadiene segment is hydrogenated. Further, it may be a triblock copolymer having a styrene polymer segment, a butadiene polymer segment, and a methacrylate ester polymer segment.
- polyimide precursors such as polyamic acid, polyamic acid ester, polyamic acid amide, polyTHF, carboxy-terminated butadiene acrylonitrile rubber, and polypropylene glycol are also preferable.
- polymer components such as phenoxy, acrylic rubber, polyimide, polyamide, polyacrylate, polyether, polysulfone, polyethylene, polypropylene, polysiloxane, polyvinyl acetate / polyvinyl ester, polyolefin, polycyanoacrylate, and curable resin. Any suitable material can be used.
- a thermoplastic resin that includes a polymer segment with a reactive double bond can react with the curable resin during a radical activated curing process.
- the mass average molecular weight of the polymer component is 10,000 or more, the film is easily formed. Further, when the mass average molecular weight is 1,000,000 or less, the moisture resistance and fluidity when the film is bonded to an adherend are excellent, 200,000 or less is more preferable, and 100,000 or less is more preferable. .
- the mass average molecular weight can be measured by gel permeation chromatography (GPC) (in terms of standard polystyrene).
- GPC gel permeation chromatography
- the blending ratio of the polymer component is excellent in ease of film formation when it is 5% by mass or more based on the total mass of the resin component in the film. Moreover, it is excellent in moisture resistance and fluidity
- a curable component other than the curable resin may be contained.
- the curable component is not particularly limited.
- (meth) acrylate compound having an amide bond in the molecule acid-modified (meth) acrylate, bisphenol A (meth) acrylate, compound obtained by reacting ⁇ , ⁇ -unsaturated carboxylic acid with polyhydric alcohol
- examples include compounds obtained by reacting a glycidyl group-containing compound with an ⁇ , ⁇ -unsaturated carboxylic acid, urethane monomers such as (meth) acrylate compounds having a urethane bond in the molecule, or urethane oligomers.
- Phthalic acid compounds, alkyl (meth) acrylates Le, EO-modified nonylphenyl (meth) acrylate or the like can be exemplified.
- a compound having an isocyanurate ring can be used.
- a compound having a tetrahydrofuran structure can be used. These may be used alone or in combination of two or more.
- membrane is bonded to a to-be-adhered body that the mixture ratio of curable components other than curable resin is 2 mass% or more based on the total mass of the resin component in a film. And is excellent in terms of improving curability. Moreover, 30 mass% or less is preferable from a viewpoint of the stress relaxation property of a film, and 10 mass% or less is more preferable.
- a coupling agent may be contained.
- the coupling agent facilitates the bonding between the adhesive film and the adherend.
- the coupling agent those compatible with the other components of the present invention can be used.
- Silicate esters metal acrylate salts (eg, aluminum (meth) acrylate), titanates (eg, titanium (meth) acryloxyethyl acetoacetate triisopropoxide), or compounds containing a copolymerizable group and a chelating ligand (eg, Phosphine, mercaptan, acetoacetate and the like).
- metal acrylate salts eg, aluminum (meth) acrylate
- titanates eg, titanium (meth) acryloxyethyl acetoacetate triisopropoxide
- compounds containing a copolymerizable group and a chelating ligand eg, Phosphine, mercaptan, acetoacetate and the like.
- the coupling agent has both copolymerizable functional groups (eg, vinyl groups, acrylate groups, methacrylate groups, and the like) and silicate ester functional groups.
- the silicate ester portion of the coupling agent can condense with the metal hydroxide present on the surface when the adherend and the filler described below are metals.
- the copolymerizable functional group can be copolymerized with other reactive components of the adhesive film of the present invention.
- the coupling agent can be added in the range of 0.1% by mass to 5% by mass based on the total mass of the resin components in the film.
- a filler may be contained.
- the function according to a filler can be provided to an adhesive film by putting a filler.
- the film has excellent stress relaxation and fluidity.
- the filler includes an organic filler, an inorganic filler, or a metal filler.
- the organic filler is preferable in that it can impart toughness to the film, and examples thereof include fillers such as acrylic, polyimide, polyamideimide, polyetheretherketone, polyetherimide, polyesterimide, nylon, and silicone.
- Inorganic fillers or metal fillers can improve handling properties, improve thermal conductivity, impart conductivity, adjust melt viscosity, impart thixotropic properties, and the like.
- metal filler there is no restriction
- money, silver, copper, aluminum, iron, indium, tin etc. and those alloys can be used.
- the inorganic filler is not particularly limited.
- aluminum hydroxide, magnesium hydroxide, calcium carbonate, magnesium carbonate, calcium silicate, magnesium silicate, calcium oxide, magnesium oxide, alumina, aluminum nitride, aluminum borate whisker, nitriding Boron, crystalline silica, amorphous silica and the like can be mentioned, and the shape of the filler is not particularly limited. These fillers can be used alone or in combination of two or more.
- silica is more preferable from the viewpoint of versatility.
- the silica is preferably spherical silica in that the adhesive film can be thinned and can contain a high proportion of filler.
- the specific surface area of the silica filler is preferably 70 ⁇ 150m 2 / g, more preferably 100 ⁇ 130m 2 / g.
- the specific surface area of the silica filler is 70 to 150 m 2 / g, there is an advantage that the heat resistance can be improved with a small amount.
- the specific surface area of the silica filler is preferably 3 to 12 m 2 / g, and more preferably 5 to 10 m 2 / g.
- the specific surface area of the silica filler is 3 to 12 m 2 / g, there is an advantage that the filler can be contained in a high ratio in the adhesive film and the heat resistance can be improved.
- the average particle size of the silica filler is preferably 0.01 to 0.05 ⁇ m, and preferably 0.012 to 0.03 ⁇ m, because heat resistance can be improved with a small amount. More preferred is 0.014 to 0.02 ⁇ m.
- the average particle size of the silica filler is preferably 0.2 to 1 ⁇ m, more preferably 0.3 to 0.8 ⁇ m, because it can contain a high proportion of filler. It is particularly preferably 4 to 0.6 ⁇ m.
- the average particle size of at least one type of silica filler is preferably 0.01 to 0.05 ⁇ m. Of the remaining types of silica fillers, the average particle size of at least one silica filler is preferably 0.2 to 1 ⁇ m.
- the content of the silica filler is preferably 5 to 70% by mass based on the total mass of the film from the viewpoint that both the heat resistance of the adhesive film can be improved and the fluidity can be maintained. Further, in relation to the average particle diameter, the silica filler having an average particle diameter of 0.01 to 0.05 ⁇ m is 5 to 15% by mass based on the total mass of the film.
- the amount of 1 ⁇ m silica filler is preferably 10 to 70% by mass, more preferably 20 to 60% by mass, from the viewpoint that both the heat resistance of the adhesive film can be improved and the fluidity can be maintained.
- a filler having a thermal conductivity of 20 W / m ⁇ K or more when applied, it is preferable in terms of improving thermal conductivity, more preferably 30 W / m ⁇ K or more, and high thermal conductivity with a small filling amount. From the viewpoint that the rate can be secured, it is particularly preferably 100 W / m ⁇ K or more.
- the thermal conductivity of the filler is measured by measuring the thermal diffusivity by a laser flash method (for example, measurement conditions: laser pulse width 0.4 ms, laser wavelength 1.06 ⁇ m, measuring device: TC7000 manufactured by ULVAC, Inc.) The value calculated by the product of the value, the density of the filler species, and the specific heat.
- fillers examples include gold (320 W / m ⁇ K), silver (420 W / m ⁇ K), copper (398 W / m ⁇ K), aluminum (236 W / m ⁇ K), iron (84 W / m). ⁇ K), indium (84 W / m ⁇ K), tin (64 W / m ⁇ K), alumina (Al 2 O 3 , 30 W / m ⁇ K), aluminum nitride (AlN, 260 W / m ⁇ K), boron nitride (BN, 275 W / m ⁇ K (in-plane direction)), silicon nitride (Si 3 N 4 , 23 W / m ⁇ K), and the like, but are not limited thereto.
- a metal filler or aluminum nitride is preferable, and from the viewpoint of exhibiting excellent thermal conductivity and electrical insulation, aluminum nitride or alumina is preferable.
- One kind may be used alone, or two or more kinds may be used in combination.
- a filler having a relatively small average particle diameter for example, about 0.1 to 2 ⁇ m, preferably about 0.2 to 1.8 ⁇ m, and a filler having a relatively large average particle diameter, for example, about 2 to 10 ⁇ m, preferably 2.5 to
- the heat conduction path between fillers with a large average particle diameter is connected by a filler with a small average particle diameter, so that a high filling can be achieved as compared with the case of using only one with the same average particle diameter. In some cases, higher thermal conductivity can be obtained.
- the filler having a small average particle diameter and the filler having a large average particle diameter are preferably used in a mass ratio of 1: 0.1 to 1.0 in terms of forming a heat conduction path.
- the particle size is too large, the surface shape of the cured product is deteriorated, and if it is too small, it tends to agglomerate and the dispersibility is deteriorated.
- the filler is granular, the average particle size is about 0.05 to 10 ⁇ m. It is preferable to use those. In the case of an agglomerated filler, it is preferable to use one having an average crystal diameter of 10 to 5000 nm and an average aggregate diameter of 1 to 1000 ⁇ m.
- the content of the filler having a thermal conductivity of 20 W / m ⁇ K or more is preferably 30% by volume or more of the film from the viewpoint of improving thermal conductivity, and more preferably 40% by volume or more. Moreover, it is excellent in film-forming property as content of the filler whose heat conductivity is 20 W / m * K or more is 70 volume% or less, and it is more preferable that it is 60 volume% or less.
- a conductive filler may be contained in terms of improving conductivity.
- fillers include carbon particles, silver, copper, nickel, aluminum, gold, tin, zinc, platinum, palladium, iron, tungsten, molybdenum, and other metal particles, alloys thereof, solder particles, metals, or alloys.
- Particles prepared by surface coating or coating with a conductive coating agent such as, but not limited to. As particles whose surface is coated with a conductive coating agent, conductive particles different from the coating agent may be applied, or non-conductive particles may be used.
- Non-conductive particles include, for example, particles made of polyethylene, polystyrene, phenol resin, epoxy resin, acrylic resin or benzoguanamine resin, or glass beads, silica, or ceramic. One kind may be used alone, or two or more kinds may be used in combination.
- a melting point of 200 ° C. or lower is preferable in that the filler is melted and fused in the step of curing the adhesive film, and the conductivity is increased.
- Sn42-Bi58 solder (melting point 138 ° C.), Sn48-In52 solder (melting point 117 ° C.), Sn42-Bi57-Ag1 solder (melting point 139 ° C.), Sn90-Ag2-Cu0.5-Bi7.5 solder ( Melting point 189 ° C.), Sn89-Zn11 solder (melting point 190 ° C.), Sn91-Zn9 solder (melting point 197 ° C.) and the like, and alloys having a melting point of 180 ° C.
- An alloy containing Sn is preferable in that the melting point is easily adjusted to 200 ° C. or less, and an alloy of Sn and Bi is more preferable.
- the filler having conductivity as described above is a filler capable of forming a sintered body, since the conductivity is further improved and the adhesiveness of the adhesive film can be improved by making a strong connection.
- Sintering is a phenomenon in which particles in contact are held at a temperature below the melting point, and the coalescence of the particles proceeds in a direction that reduces the surface energy of the entire particle system, thereby densifying the particle system. In one embodiment, sintering is facilitated by the filler containing metal nanofillers or consisting only of metal nanofillers.
- the smaller the particle size of the filler the greater the total surface area per unit mass and the greater the contribution of surface energy, so the thermal energy required for melting is reduced and sintering at low temperatures is possible. Because it becomes.
- a filler silver particles, copper particles, a mixture thereof, or the like can be used.
- the filler can be prepared by a method described in JP-A-2005-146408 or JP-A-2012-082516.
- Liquid phase sintering is a special form of sintering in which solid powder particles coexist with the liquid phase.
- the metals diffuse into each other, creating new alloys and / or intermetallic species. By forming, the mixture is densified and homogenized.
- transitional liquid phase sintering the time present in the liquid phase as a result of metal homogenization is very short. That is, the liquid phase has a very high solubility in the surrounding solid phase and thus diffuses rapidly into the solid and eventually solidifies. Diffusion homogenization produces the final composition without the need to heat above the equilibrium melting temperature of the mixture of metal particles.
- combinations with excellent conductivity include copper-indium alloys, copper-tin alloys, silver-indium alloys, silver-tin alloys, gold-indium alloys, gold-tin alloys, gold-lead alloys.
- examples include, but are not limited to, alloys. All of the systems containing In have an eutectic point near 150 ° C., which is excellent in that low-temperature sintering easily proceeds. Moreover, since the system containing Sn has a eutectic point around 200 ° C., it is preferable in terms of heat resistance reliability.
- the conductive filler as described above may be spherical, non-spherical, dendritic, flake, plate-like, porous, or the like.
- the average particle size is preferably 30 ⁇ m or less in terms of facilitating thinning of the adhesive film, and more preferably 10 ⁇ m or less.
- the thickness is 5 ⁇ m or less, the surface area is increased, so that the particles are easily wetted with each other.
- the thickness is 1 ⁇ m or less, the total surface area per unit mass rapidly increases and the contribution of surface energy increases, so it is necessary for melting. It is particularly excellent in that it can reduce the thermal energy and sinter at a low temperature.
- the average particle size of the filler is generally 0.005 ⁇ m or more, and 0.1 ⁇ m or more is preferable in that it hardly aggregates and is excellent in dispersibility with a solvent or a resin.
- the fillers in order to increase the contact points between the fillers, it is preferably 75% by mass or more, more preferably 85% by mass or more, and further preferably 90% by mass or more based on the total mass of the film.
- 99 mass% or less is preferable, and 98 mass% or less is more preferable.
- the adhesive film preferably contains a flux.
- the flux serves to remove the surface oxide film of the conductive filler.
- any compound that does not inhibit the curing reaction of the curable resin and other curable resins can be used without particular limitation. Examples thereof include polyhydric alcohols, carboxylic acids, inorganic acids, alkanolamines, phenols, rosin, chloride compounds and salts thereof, halogenated compounds and salts thereof. Only one type of flux may be used, or two or more types may be used in combination.
- the flux may comprise a carboxylic acid and tertiary amine salt or mixture and have a potential.
- the flux can be deactivated at the end of the heat treatment of the adhesive film, in which case the flux functional groups and the curable resin are reacted and incorporated to reactivate.
- Examples of the polyhydric alcohol include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, octene glycol, polyethylene glycol, glycerin, propanediol, and mixtures thereof.
- Examples of the carboxylic acid include acrylic acid, methacrylic acid, maleic acid, fumaric acid, valeric acid, hexanoic acid, heptanoic acid, 2-ethylhexanoic acid, octanoic acid, 2-methylheptanoic acid, and 4-methyloctanoic acid.
- the carboxylic acid has a molecular weight of 150-300.
- the molecular weight of the carboxylic acid By setting the molecular weight of the carboxylic acid to 150 or more and 300 or less, it is possible to prevent an abnormal increase in viscosity when the adhesive composition is applied, and to promote the bonding of the conductive particles.
- dicarboxylic acids are used.
- dicarboxylic acids include oxalic acid, malonic acid, succinic acid, glutaric acid, fumaric acid, maleic acid and the like.
- Tertiary amines are used in the form of a mixture or salt with acid functional groups and form a buffer or salt with the acidic functional groups of the carboxylic acid to prevent premature reaction with other resin components.
- a tertiary amine may be a monomer, oligomer or polymer and a combination of one or more molecules.
- Triethanolamine and tertiary alkanolamines such as N, N, N include N, N, N ′, N′-tetrakis (2-hydroxyethyl) ethylenediamine, which is a buffer mixture with a carboxylic acid functional group. Or suitable for forming a salt.
- Flux can be introduced into the adhesive film in a wide variety of forms.
- a state compatible with a resin, a state mixed as particles, a state coated with a conductive filler, and the like can be mentioned.
- the average particle size of the particulate flux is 30 ⁇ m or less, preferably 15 ⁇ m or less. When the average particle size is 15 ⁇ m or less, the metal is more easily melted. It is presumed that the average particle size becomes smaller, the apparent melting point of the flux is lowered and the flux is easily melted, and the oxide film can be easily removed.
- the average particle diameter is preferably 10 ⁇ m or less, more preferably 6 ⁇ m or less from the viewpoint of enabling thin film application of an adhesive film, and 2 ⁇ m or less from the viewpoint of improving the printability of the conductive adhesive composition. Preferably there is. Further, from the viewpoints of handleability, thin film application, and printability, the average particle size is more preferably 0.01 ⁇ m or more.
- the thin film indicates a thickness of 20 ⁇ m or less, and that the applicability is good means that when the conductive adhesive composition is applied, for example, when a line is drawn using a dispenser, the line width is It means that the surface roughness is uniform within 10% of the film thickness when formed into a film with a coater.
- printability means that when applying a conductive adhesive composition to an object, for example, when continuously printed by screen printing, the paste viscosity on the object does not increase with time and is stable.
- average particle diameter means a D50 value of a cumulative volume distribution curve in which 50% by volume of particles measured by a laser diffraction method have a diameter smaller than this value.
- the laser diffraction method is preferably performed using a Malvern Mastersizer 2000 manufactured by Malvern Instruments. In this technique, the size of particles in a suspension or emulsion is measured using laser beam diffraction, based on either Fraunhofer or Mie theory applications. In the present invention, Mie theory or modified Mie theory for non-spherical particles is used, and the average particle diameter or D50 value relates to scattering measurement at 0.02 to 135 ° with respect to the incident laser beam.
- a diameter is obtained by taking an electron micrograph using a scanning electron microscope (SEM), measuring the cross-sectional area of the particle, and setting the measured value as the area of a corresponding circle. was determined as the particle size.
- SEM scanning electron microscope
- Examples of a method for adjusting the average particle size of the flux include a pulverizing method.
- a pulverizer can be used.
- Examples of the pulverizer include known ball mill pulverizers, jet mill pulverizers, ultrafine pulverizers, hammer type pulverizers, mortars, roller mills and the like.
- the method of adjusting an average particle diameter is not restrict
- the flux is preferably 0.5 parts by mass or more based on 100 parts by mass of the total amount of filler having conductivity in the film, because the metal is easy to melt, more preferably 0.8 parts by mass or more, and 1.0 mass. More preferably, it is at least part.
- the flux is preferably 20 parts by mass or less based on 100 parts by mass of the conductive filler in the film, in terms of maintaining the moisture resistance of the adhesive film, more preferably 15 parts by mass or less. More preferred is less than or equal to parts by weight.
- the conductive adhesive composition of the present invention comprises, for example, a plasticizer, oil, stabilizer, antioxidant, corrosion inhibitor, inhibitor, chelating agent, pigment, dye, polymer additive, One or more additives such as foaming agents, preservatives, thickeners, rheology modifiers, humectants, tackifiers, dispersants and water may be further included.
- the adhesive film can be produced by a usual method. For example, a varnish containing a curable resin is prepared, a varnish is applied on a cover film so as to have a predetermined thickness, a coating film is formed, and then the coating film is dried under a predetermined condition. Can be manufactured. It does not specifically limit as a coating method, For example, roll coating, screen coating, gravure coating, etc. are mentioned. As drying conditions, for example, a drying temperature of 80 to 130 ° C. and a drying time of 1 to 5 minutes are performed.
- polyethylene terephthalate (PET), polyethylene, polypropylene, a plastic film or paper whose surface is coated with a release agent such as a fluorine-type release agent or a long-chain alkyl acrylate release agent can be used.
- PET polyethylene terephthalate
- a release agent such as a fluorine-type release agent or a long-chain alkyl acrylate release agent
- the thickness between adherends can be maintained, which is preferable in terms of easy handling.
- the thickness of the adhesive film is not particularly limited, but is preferably 1 to 300 ⁇ m, preferably 5 to 60 ⁇ m when the layers between adherends are bonded, and 60 to 200 ⁇ m when stress relaxation is required. preferable.
- the adhesive film can be suitably used as an adhesive film with a dicing tape by being combined in the form of being laminated on the dicing tape.
- the dicing tape is a tape used for a process of cutting an individual circuit or package of an integrated circuit or a package mainly formed on a semiconductor wafer by cutting the wafer with a dicing saw.
- the adhesive film is radically curable, it can be combined with a dicing tape having a radiation-type pressure-sensitive adhesive layer or a pressure-sensitive pressure-sensitive pressure-sensitive adhesive layer that has been irradiated with radiation in advance on the wafer attachment portion.
- FIG. 1 and 2 are schematic cross-sectional views of an adhesive film with a dicing tape according to an embodiment of the present invention.
- FIG. 1 shows the structure of an adhesive film 10 with a dicing tape in which an adhesive film 3 is laminated on a dicing tape 11.
- the dicing tape 11 is configured by laminating the pressure-sensitive adhesive layer 2 on the base material 1, and the adhesive film 3 is provided on the pressure-sensitive adhesive layer 2.
- work affixing part may be sufficient.
- the base material 1 is a base material for the strength of the adhesive films 10 and 12 with dicing tape, and preferably has ultraviolet transparency and expands when expanded.
- polyolefins such as polyethylene, polyprolene, polybutene, polymethylpentene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene- (meth) acrylic acid copolymer, ethylene- (meth) acrylic acid ester (random, alternating) Copolymer, ethylene-butene copolymer, ethylene-hexene copolymer, polyester such as polyurethane, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyimide, polyetheretherketone, polyetherimide, polyamide, wholly aromatic polyamide, Polyphenylsulfide, aramid (paper), glass, glass cloth, fluororesin, polyvinyl chloride, polyvinylidene chloride, cellulosic resin, silicone resin, cross-linked products of
- the surface of the substrate 1 is subjected to conventional surface treatments such as chromic acid treatment, ozone exposure, flame exposure, high-voltage impact exposure, ionizing radiation treatment, etc. in order to improve adhesion, retention, etc.
- a coating treatment with a primer for example, an adhesive substance described later can be performed.
- the base material 1 can be used by appropriately selecting the same type or different types, and a blend of several types can be used as necessary. In addition, a laminate of different layers can be used.
- the thickness of the substrate 1 is not particularly limited, but is generally about 50 to 200 ⁇ m.
- the pressure-sensitive adhesive used for forming the pressure-sensitive adhesive layer 2 is not particularly limited, and for example, a general pressure-sensitive adhesive such as an acrylic pressure-sensitive adhesive or a rubber-based pressure-sensitive adhesive can be used.
- a radiation curable pressure-sensitive adhesive can be used as the pressure-sensitive adhesive used for forming the pressure-sensitive adhesive layer 2.
- a radiation-curable pressure-sensitive adhesive can easily reduce its adhesive strength by increasing the degree of crosslinking by irradiation with radiation such as ultraviolet rays.
- the radiation curable pressure-sensitive adhesive those having a radiation curable functional group such as a carbon-carbon double bond and exhibiting adhesiveness can be used without particular limitation.
- an addition type radiation curable pressure sensitive adhesive in which a radiation curable monomer component or oligomer component is blended with a general pressure sensitive pressure sensitive adhesive such as the acrylic pressure sensitive adhesive or rubber pressure sensitive adhesive can be exemplified.
- Examples of the radiation curable monomer component to be blended include urethane oligomer, urethane (meth) acrylate, trimethylolpropane tri (meth) acrylate, tetramethylolmethane tetra (meth) acrylate, pentaerythritol tri (meth) acrylate, and pentaerythritol.
- Examples include stall tetra (meth) acrylate, dipentaerystol monohydroxypenta (meth) acrylate, dipentaerythritol hexa (meth) acrylate, and 1,4-butanediol di (meth) acrylate.
- the radiation curable oligomer component includes various oligomers such as urethane, polyether, polyester, polycarbonate, and polybutadiene, and those having a molecular weight in the range of about 100 to 30000 are suitable.
- the amount of the radiation curable monomer component or oligomer component can be appropriately determined according to the type of the pressure-sensitive adhesive layer. Generally, the amount is, for example, about 5 to 500 parts by mass, preferably about 40 to 150 parts by mass with respect to 100 parts by mass of the base polymer such as an acrylic polymer constituting the pressure-sensitive adhesive.
- the radiation-curable pressure-sensitive adhesive has a carbon-carbon double bond in the polymer side chain, main chain, or main chain terminal as a base polymer.
- Intrinsic radiation curable pressure sensitive adhesives using The internal radiation curable pressure-sensitive adhesive does not need to contain an oligomer component or the like that is a low-molecular component, or does not contain much, so that the oligomer component or the like moves through the pressure-sensitive adhesive over time, or the adhesive film 3 Since it does not shift to, it is preferable.
- the radiation curable pressure-sensitive adhesive examples include photopolymerizable compounds such as an addition polymerizable compound having two or more unsaturated bonds and an alkoxysilane having an epoxy group disclosed in JP-A-60-196956. And a rubber-based pressure-sensitive adhesive and an acrylic pressure-sensitive adhesive containing a photopolymerization initiator such as a carbonyl compound, an organic sulfur compound, a peroxide, an amine, and an onium salt-based compound.
- photopolymerizable compounds such as an addition polymerizable compound having two or more unsaturated bonds and an alkoxysilane having an epoxy group disclosed in JP-A-60-196956.
- a rubber-based pressure-sensitive adhesive and an acrylic pressure-sensitive adhesive containing a photopolymerization initiator such as a carbonyl compound, an organic sulfur compound, a peroxide, an amine, and an onium salt-based compound.
- the thickness of the pressure-sensitive adhesive layer 2 is not particularly limited, but is preferably about 1 to 50 ⁇ m.
- the thickness is preferably 2 to 30 ⁇ m, more preferably 5 to 25 ⁇ m.
- FIG. 1 briefly illustrates the configuration and manufacturing method of a semiconductor device using such an adhesive film with a dicing tape.
- the semiconductor wafer 4 is pressure-bonded onto the semiconductor wafer attachment portion of the adhesive film 3 in the adhesive film with dicing film 10, and this is adhered and held and fixed (attachment step).
- This step is performed while pressing with a pressing means such as a pressure roll.
- a varnish containing each component listed in Table 1 and an appropriate amount of toluene was applied to a cover tape made of a PET film having a thickness of 50 ⁇ m, and after forming an adhesive film having a thickness of 30 ⁇ m through a drying oven at 140 ° C. for 5 minutes, The rolls of the adhesive films of Examples 1 to 10 and Comparative Examples 1 and 2 were prepared as adhesive films with dicing tape.
- dicing tape an acrylic UV dicing tape in which only the adhesive strength (vs. # 280SUS) of the work pasting portion was adjusted to 0.5 N / 25 mm or less by irradiation with radiation in advance was used.
- the adhesive films of Examples 1 to 10 and Comparative Example 1 were bonded to an Ag metallized surface of a silicon wafer having a thickness of 50 ⁇ m and a diameter of 200 mm at a heating temperature of 90 ° C. and a bonding speed of 12 mm / s. Subsequently, after dicing the semiconductor wafer and the adhesive film into a size of 5 mm ⁇ 5 mm using a dicer, the adhesive film and the dicing tape were separated to obtain a semiconductor chip with an adhesive film.
- Each obtained semiconductor chip with an adhesive film was thermocompression bonded to the lead frame with a thickness of 180 ⁇ m and an Ag metallized surface through an adhesive film while applying a force of 0.4 MPa at 150 ° C. for 1 second. Thereafter, the adhesive film was cured by heating at 230 ° C. for 1 hour while applying a force of 0.5 MPa. Next, resin sealing was performed using epoxy sealing resin (trade name: CEL-9700HF, manufactured by Hitachi Chemical Co., Ltd.) under the conditions of 180 ° C., 6.75 MPa, 90 seconds, and 40 samples of the semiconductor device were obtained. Individually manufactured.
- epoxy sealing resin trade name: CEL-9700HF, manufactured by Hitachi Chemical Co., Ltd.
- ⁇ Stress relaxation test> Each cycle of exposing 20 semiconductor devices obtained using the adhesive films of each of the examples and comparative examples alternately for 30 minutes under the condition of ⁇ 55 ° C. and for 30 minutes under the condition of 150 ° C.
- the semiconductor device after the test was subjected to 100 cycles, and the presence or absence of peeling at the interface between the chip upper surface and the sealing resin was evaluated for the semiconductor device after the test using an ultrasonic imaging apparatus.
- B Peeling was confirmed in one or more semiconductor devices.
- Curable resin 1 polymerized with the following compounds
- Curable resin 2 a product obtained by polymerizing the following compounds
- EBECRYL170 Phosphoric acid acrylate
- FG1901 KRATON (registered trademark)
- FG1901G manufactured by Allnex
- SEBS grafted with MA SO-C2 Silica filler, manufactured by Admatechs, average particle size 0.5 ⁇ m
- AlN Aluminum nitride H grade, manufactured by Tokuyama, average particle size 1.1 ⁇ m, Mohs hardness 8, thermal conductivity 200 W / m ⁇ K Cu filler: spherical copper powder, average particle size 3 ⁇ m, stearic acid surface treatment Sn72-Bi28: spherical solder, melting point 139 ° C., average particle size 3 ⁇ m
- EA0297 Silver flakes, average particle size 4 ⁇ m
- Metallic BHPA Flux, 2,2-bis (hydroxymethyl) phuccinic acid (manufactured by Tokyo Chemical Industry Co., Ltd.) Jet mill grinder (Nisshin Engineering, Karen Jet) ), Average particle size
- Example 1 since the half-life temperature of the polymerization initiator for 1 hour is 140 ° C. or higher, the curing reaction does not proceed in the film forming process, and it is suitable as an adhesive film.
- Example 10 since the half-life temperature of 1 hour of the polymerization initiator was 140 ° C. or higher, the curing reaction did not proceed in the film forming step, and it was suitable as an adhesive film.
- Comparative Example 2 since the half-life temperature of the polymerization initiator for 1 hour was less than 140 ° C., the curing reaction proceeded in the film forming process, and it could not be applied as an adhesive film. For this reason, experiments on stress relaxation and moisture resistance could not be performed.
- Examples 1 to 10 include a resin having a C 36 structure, which is one of structures in which an alicyclic hydrocarbon having 5 to 8 carbon atoms is substituted with at least four alkyl groups having 4 to 12 carbon atoms. Since stress due to temperature change can be relaxed and warping of the lead frame and the chip can be prevented, peeling between the upper surface of the chip and the sealing resin can be suppressed. Since Comparative Example 1 does not include a resin having a structure in which an alicyclic hydrocarbon having 5 to 8 carbon atoms is substituted with at least four alkyl groups having 4 to 12 carbon atoms, stress due to temperature change can be relieved. As a result, peeling between the top surface of the chip and the sealing resin could not be suppressed.
- a resin having a C 36 structure which is one of structures in which an alicyclic hydrocarbon having 5 to 8 carbon atoms is substituted with at least four alkyl groups having 4 to 12 carbon atoms. Since stress due to temperature change can be relaxed and warping of the lead
- Examples 1 to 6 and 8 and 9 is a resin most of the resin component has a C 36 structure, moisture absorption is very small, be subjected to reflow test after moisture absorption, peeling did not occur.
- Example 8 also showed practically possible moisture resistance despite the use of aluminum nitride that readily absorbs moisture. Moreover, since aluminum nitride is a thermally conductive filler, it has the effect of being excellent in thermal conductivity.
- Example 7 since 60% of the resin component has a C36 structure, the amount of moisture absorption is small, and even when the reflow test is performed after moisture absorption, the number of semiconductor devices that are peeled off can be suppressed to two or less. Since Example 10 includes a resin having a C36 structure, the amount of moisture absorption can be reduced, and even when a reflow test is performed after moisture absorption, the number of semiconductor devices to be peeled can be suppressed to less than half.
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Abstract
Description
(B)1時間の半減期温度が140℃以上である重合開始剤、
を含むことを特徴とする接着フィルムに関する。
本発明の硬化性樹脂(A)は、炭素数5~8の脂環式炭化水素が、少なくとも4つの炭素数4~12のアルキル基で置換された構造を有する。このような構造は、長いアームのアルキル長鎖を有するため、応力緩和効果に優れる。また脂環族および脂肪族より形成されているため、耐湿性に優れる。
なお、アルキル基の炭素数が4以上であると、応力緩和性と耐湿性に優れる点で好ましい。アルキル基の炭素数が12以下であると耐湿性と接着性が両立できる点で好ましい。
また、炭化水素数が9以上の脂環式炭化水素でも差支えはないが、合成が困難であるため実用的ではない。
ここで、本明細書において、「硬化性部位」となりうる構造としては、例えばチオール、ビニルエステル、アクリレート、メタクリレート、ノルボルニル、マレイミドまたはナジイミドが挙げられる。
ビニルエステルは、速硬化性、密着性に優れる。
アクリレート、メタクリレートは、水分や塩基による重合阻害を受けにくく、暗反応がない点で優れる。
マレイミド及びナジイミドは、LUMOのエネルギー準位が低くディールス・アルダー反応におけるジエノフィルとしての反応性が高い点で優れる。
環状構造や、イミド構造は耐熱性に優れる点で好ましい。脂肪族や脂環族は耐湿性に優れる点で好ましい。
本発明における重合開始剤(B)としては、ラジカル重合開始剤などが挙げられ、ラジカル重合開始剤は、フィルム中の樹脂成分の全質量に基づいて典型的には0.1質量%~5質量%の量で組成物中に存在することができる。ラジカル重合開始剤は、ラジカル連鎖反応の開始段階の反応物質として作用するが、伝播の任意の工程に参加していない種である。本明細書においては、十分なエネルギー(たとえば、光、熱、あるいはその他同種のもの)に暴露された時に、荷電していないが、各々少なくとも1つの不対電子を有する2つの部分へ分解する任意の化学種をいう。ラジカル開始剤としては、例えばアゾ化合物や過酸化物、炭化水素ラジカル開始剤が挙げられる。炭化水素ラジカル開始剤は例えば特開2009-203384号公報に開示されており、得られる効果樹脂組成物の電気特性に優れる点で好ましい。
本発明において、フィルム状に形成しやすくするために、高分子成分を包含してもよい。
また、高分子成分は応力緩和性にさらに寄与することもできる。高分子成分は、取り扱いが容易であり、硬化性樹脂との適合性を有するものであればよい。好適な高分子成分の例としては、疎水性でありトルエンに可溶である熱可塑性樹脂が挙げられる。硬化性樹脂との適合性を有する場合、熱可塑性樹脂と硬化性樹脂の両方は同じ溶媒に可溶である場合が考えられ、このような溶媒としては芳香族溶媒が例えば挙げられる。有用な溶媒の例としてはトルエン及びキシレンが挙げられる。
本発明において、硬化性樹脂以外の硬化性成分を含有してもよい。硬化性成分としては、特に限定されない。例えば、分子内にアミド結合を有する(メタ)アクリレート化合物、酸変性(メタ)アクリレート、ビスフェノールA系(メタ)アクリレート、多価アルコールにα,β-不飽和カルボン酸を反応させて得られる化合物、グリシジル基含有化合物にα,β-不飽和カルボン酸を反応させて得られる化合物、分子内にウレタン結合を有する(メタ)アクリレート化合物等のウレタンモノマー、またはウレタンオリゴマーが挙げられ、これら以外にも、ノニルフェノキシポリオキシエチレンアクリレート、γ-クロロ-β-ヒドロキシプロピル-β’-(メタ)アクリロイルオキシエチル-o-フタレート、β-ヒドロキシアルキル-β’-(メタ)アクリロイルオキシアルキル-o-フタレート等のフタル酸系化合物、(メタ)アクリル酸アルキルエステル、EO変性ノニルフェニル(メタ)アクリレート等が例示可能である。
本発明において、カップリング剤を含有してもよい。本発明において、カップリング剤は接着フィルムと被着体との接合を容易にする。カップリング剤としては、本発明のその他の成分と相溶するものが使用できる。またラジカル硬化反応に関与するものを使用してもよい。例えば、メルカプトシラン系、アクリル系、γ-メルカプトプロピルトリメトキシシラン、γ-メタクリロキシプロピルトリメトキシシラン、γ-アミノプロピルトリメトキシシラン、及びビニルトリメトキシシランが挙げられる。シリケートエステル、金属アクリレート塩(たとえば、アルミニウム(メタ)アクリレート)、チタネート(たとえば、チタニウム(メタ)アクリロキシエチルアセトアセテートトリイソプロポキシド)、または共重合可能な基とキレーティングリガンドを含む化合物(たとえば、ホスフィン、メルカプタン、アセトアセテートおよびその他同種のもの)があげられる。
本発明においてフィラーを含有してもよい。フィラーを入れることで、フィラーに応じた機能を接着フィルムに付与することができる。一方、フィラーを入れない場合はフィルムの応力緩和性と流動性が高い点で優れる。フィラーは有機フィラー、無機フィラーまたは金属フィラーがある。有機フィラーはフィルムに靭性を付与できる点で好ましく、例えば、アクリル、ポリイミド、ポリアミドイミド、ポリエーテルエーテルケトン、ポリエーテルイミド、ポリエステルイミド、ナイロン、シリコーン等のフィラーが挙げられる。無機フィラーまたは金属フィラーは、取扱い性向上、熱伝導性向上、導電性付与、溶融粘度の調整及びチキソトロピック性付与などを向上させることができる。金属フィラーとしては、特に制限はなく、例えば金、銀、銅、アルミニウム、鉄、インジウム、錫等及びそれらの合金などが使用できる。無機フィラーとしては、特に制限はなく、例えば、水酸化アルミニウム、水酸化マグネシウム、炭酸カルシウム、炭酸マグネシウム、ケイ酸カルシウム、ケイ酸マグネシウム、酸化カルシウム、酸化マグネシウム、アルミナ、窒化アルミニウム、ほう酸アルミニウムウイスカ、窒化ほう素、結晶性シリカ、非晶性シリカ等が挙げられ、フィラーの形状についても特に制限はない。これらのフィラーは、単独で又は2種類以上を組み合わせて使用することができる。
たとえば、導電性に優れる組合せとしては、銅-インジウム系合金、銅-スズ系合金、銀-インジウム系合金、銀-スズ系合金、金-インジウム系合金、金-スズ系合金、金-鉛系合金が挙げられるがこれに限定されない。Inを含む系はすべて150℃付近に共融点を有するので、低温焼結が進行しやすい点で優れている。またSnを含む系は200℃付近の共融点を有するので、耐熱信頼性の点で好ましい。
特定の実施形態では、フラックスは、カルボン酸と第三級アミンの塩または混合物を含んで構成され、潜在性を有することができる。他の実施形態では、フラックスが接着フィルムの熱処理の終了時に不活性にされていることでき、その場合フラックスの官能基と硬化性樹脂が反応して組み込まれることで、不活性化される。
別の実施態様において、本発明の導電性接着剤組成物は、例えば可塑剤、油、安定化剤、酸化防止剤、腐食防止剤、インヒビター、キレート剤、顔料、染料、高分子添加物、消泡剤、防腐剤、増粘剤、レオロジー調整剤、保湿剤、粘着性付与剤、分散剤および水などの1種以上の添加剤をさらに含んでもよい。
接着フィルムは、通常の方法で製造できる。例えば、硬化性樹脂を含むワニスを作製し、ワニスをカバーフィルム上に所定厚みとなる様に塗布して塗布膜を形成した後、該塗布膜を所定条件下で乾燥させることで、接着フィルムを製造できる。塗布方法としては特に限定されず、例えば、ロール塗工、スクリーン塗工、グラビア塗工等が挙げられる。また、乾燥条件としては、例えば乾燥温度80~130℃、乾燥時間1~5分間の範囲内で行われる。カバーフィルムとしては、ポリエチレンテレフタレート(PET)、ポリエチレン、ポリプロピレンや、フッ素系剥離剤、長鎖アルキルアクリレート系剥離剤等の剥離剤により表面コートされたプラスチックフィルムや紙などが使用可能である。このような方法を用いてフィルム化することで、被着体間の厚さを保持することができ、取り扱いの容易である点で好ましい。接着剤組成物をフィルム状に形成するためには、質量平均分子量が1000以上の硬化性樹脂を適用する、または、高分子成分を含有することが好ましい。
実施例1~10及び比較例1、2の接着フィルムを、厚さ50μm、直径200mmのシリコンウェハに対し、加熱温度90℃または110℃,貼合速度12mm/sで貼合した。上記貼合作業をシリコンウェハ10枚に対して試行し、接着フィルムがボイド等なく適切に貼合され、接着フィルムとして機能できるかを確認した。試験結果を表1に示す。
A:10枚すべて90℃で貼合が可能であった。
B:10枚すべて90℃または110℃で貼合が可能であった。
C:少なくとも1枚以上の貼合不良が生じた。
接着フィルム適正がAまたはBの実施例の接着フィルムを、常温のクリーンルームで保管し、24時間後、3日後に接着フィルム適正試験と同様の貼合実験を行った。試験結果を表1に示す。
A:10枚すべて90℃で貼合が可能であった。
B:10枚すべて90℃または110℃で貼合が可能であった。
C:少なくとも1枚以上の貼合不良が生じた。
実施例1~10及び比較例1の接着フィルムを、厚さ50μm、直径200mmのシリコンウェハのAgメタライズ面に対し、加熱温度90℃,貼合速度12mm/sで貼合した。続いて、ダイサーを用いて半導体ウェハ及び接着フィルムを5mm×5mmの大きさにダイシングした後、接着フィルムとダイシングテープとの間を離間させ、接着フィルム付き半導体チップを得た。得られた各接着フィルム付き半導体チップを、接着フィルムを介して厚さ180μm、Agメタライズ面付きリードフレームに150℃で0.4MPaの力を1秒間加えながら加熱圧着した。その後、0.5MPaの力をかけながら230℃で1時間加熱して接着フィルムを硬化させた。次に、エポキシ封止樹脂(日立化成工業(株)製、商品名:CEL-9700HF)を用いて180℃、6.75MPa、90秒の条件で樹脂封止して、半導体装置のサンプルを40個製造した。
各実施例及び比較例の接着フィルムを用いて得られた半導体装置それぞれ20個ずつについて、-55℃の条件下に30分、150℃の条件下に30分ずつ交互に晒すことを1サイクルとする、温度サイクル試験を100サイクル行い、試験後の半導体装置について、超音波探査映像装置を用いて、チップ上面と封止樹脂の界面での剥離の有無を評価した。
A:20個すべての半導体装置に剥離が確認されなかった。
B:1個以上の半導体装置に剥離が確認された。
実施例1~10及び比較例1の接着フィルムを用いて得られた半導体装置それぞれ20個ずつについて、85℃/60%RHの恒温恒湿槽に168時間入れ吸湿させた。各10個のサンプルを取り出し、超音波探査映像装置を用いて接着フィルムとリードフレームの界面を観察した。残りの10個のサンプルは最高温度が260℃の条件のリフロー炉を3回通し、同様に超音波探査映像装置を用いて接着フィルムとリードフレームの界面を観察した。
-:吸湿直後のサンプルで剥離が観察され、耐湿試験に至らなかった。
A:リフロー後の10個すべての半導体装置に剥離が確認されなかった。
B:1、または2個の半導体装置に剥離が確認された。
C:3個以上5個以下の半導体装置に剥離が確認された。
D:6個以上の半導体装置に剥離が確認された。
硬化性樹脂1:下記化合物を重合させてなるもの
FG1901:KRATON(登録商標)FG1901G、SEBS grafted with MA
SO-C2:シリカフィラー、アドマテックス製、平均粒径0.5μm
AlN:窒化アルミニウムHグレード、トクヤマ製、平均粒径1.1μm、モース硬度8、熱伝導率200W/m・K
Cuフィラー:球状銅粉、平均粒径3μm、ステアリン酸表面処理
Sn72-Bi28:球状はんだ、融点139℃、平均粒径3μm
EA0297:銀フレーク、平均粒径4μm、Metalor製
BHPA:フラックス、2,2ービス(ヒド口キシメチル)フ口ピオン酸(東京化成工業製)のジェットミル粉砕機(日清エンジニアリング製、カレン卜ジェッ卜)による粉砕処理品、平均粒径10μm
Tetra EG:フラックス、テトラエチレングリコール、液状、沸点328℃
Z-6030:シランカップリング剤、3-メタクリロイルプロピルトリエトキシシラン、東レ・ダウコーニング製
TRIGONOX 301:3,6,9‐トリエチル‐3,6,9‐トリメチル‐1,4,7‐トリペルオキソナン、1時間半減温度146℃、Akzo Nobel製
Luperox TAH:tert-アミルハイドロパーオキサイド、1時間半減温度183℃、Arkema製
ノフマーBC:2,3-ジメチル-2,3-ジフェニルブタン、1時間半減温度234℃、日油製
Initiator A:3,4-ジメチル-3,4-ジフェニルヘキサン、1時間半減温度211℃
パークミルD:ジクミルパーオキサイド、1時間半減温度136℃、日油製
YL980:ビスフェノールA型エポキシ樹脂、加水分解性塩素濃度150ppm、三菱化学製
PKHA:フェノキシ樹脂、分子量25,000、Inchem製
2PHZ-PW:エポキシ樹脂硬化剤、2-フェニル 4, 5-ジヒド口キシメチルイミダゾール、分解温度230℃、四国化成製
実施例10は重合開始剤の1時間の半減期温度が140℃以上であるので、フィルム化工程で硬化反応が進むことなく、接着フィルムとして適していた。
比較例2は重合開始剤の1時間の半減期温度が140℃未満であるので、フィルム化工程で硬化反応が進んでしまい、接着フィルムとして適用することができなかった。また、そのため、応力緩和性、耐湿性の実験を行うことができなかった。
比較例1は、炭素数5~8の脂環式炭化水素が、少なくとも4つの炭素数4~12のアルキル基で置換された構造を有する樹脂を含まないため、温度変化による応力を緩和することができず、チップ上面と封止樹脂との間で剥離を抑制することができなかった。
実施例7は樹脂成分の60%がC36構造を有する樹脂なので、吸湿量が小さく、吸湿後にリフロー試験にかけても、剥離する半導体装置を2個以下に抑制できた。
実施例10はC36構造を有する樹脂を含むので、吸湿量が小さくでき、吸湿後にリフロー試験にかけても、剥離する半導体装置を半数以下に抑えることができた。
2 …… 粘着剤層
3、3’ …… 接着フィルム(熱硬化型接着フィルム)
4 …… 半導体ウェハ
10、12 …… ダイシング付き接着フィルム
11 …… ダイシングフィルム
Claims (5)
- (A)炭素数5~8の脂環式炭化水素が、少なくとも4つの炭素数4~12のアルキル基で置換された構造を有し、さらに少なくとも一つの硬化性部位を有する硬化性樹脂、及び
(B)1時間の半減期温度が140℃以上である重合開始剤、
を含むことを特徴とする接着フィルム。 - 前記(A)が、フィルムを構成する樹脂成分の50質量%以上含有されていることを特徴とする、請求項1または2記載の接着フィルム。
- さらにフィラーを含有することを特徴とする、請求項1~3いずれか記載の接着フィルム。
- 請求項1~4いずれか記載の接着フィルムを、ダイシングテープに積層してなることを特徴とする、ダイシングテープ付き接着フィルム。
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EP15835421.7A EP3187556B1 (en) | 2014-08-29 | 2015-08-10 | Adhesive film |
JP2015557253A JP6429802B2 (ja) | 2014-08-29 | 2015-08-10 | 接着フィルム |
CN201580033222.6A CN106459682B (zh) | 2014-08-29 | 2015-08-10 | 粘接膜 |
KR1020167033473A KR101961996B1 (ko) | 2014-08-29 | 2015-08-10 | 접착 필름 |
SG11201700740QA SG11201700740QA (en) | 2014-08-29 | 2015-08-10 | Adhesive film |
US15/428,597 US20170152405A1 (en) | 2014-08-29 | 2017-02-09 | Adhesive film |
PH12017500376A PH12017500376A1 (en) | 2014-08-29 | 2017-02-28 | Adhesive film |
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WO2016171101A1 (ja) * | 2015-04-20 | 2016-10-27 | 宇部興産株式会社 | ポリイミド、硬化性樹脂組成物、硬化物 |
JP2017069559A (ja) * | 2015-09-30 | 2017-04-06 | 日東電工株式会社 | パワー半導体装置の製造方法 |
JP2017069558A (ja) * | 2015-09-30 | 2017-04-06 | 日東電工株式会社 | パワー半導体装置の製造方法 |
JPWO2016114286A1 (ja) * | 2015-01-13 | 2017-11-02 | 日立化成株式会社 | 樹脂組成物、樹脂層付き支持体、プリプレグ、積層板、多層プリント配線板及びミリ波レーダー用プリント配線板 |
WO2021182327A1 (ja) * | 2020-03-12 | 2021-09-16 | 日東電工株式会社 | 接合シート |
US11810885B2 (en) * | 2018-08-31 | 2023-11-07 | Waseda University | Semiconductor element bonding structure, method for producing semiconductor element bonding structure, and electrically conductive bonding agent |
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US10647810B2 (en) * | 2015-08-11 | 2020-05-12 | Arizona Board Of Regents On Behalf Of The University Of Arizona | Method of forming of a robust network of epoxy material through Diels-Alder reaction |
WO2017132497A1 (en) | 2016-01-29 | 2017-08-03 | The Arizona Board Of Regents On Behalf Of The University Of Arizona | Coumarin-modified epoxy adhesives |
US10380908B2 (en) * | 2016-08-12 | 2019-08-13 | Medical Makers Inc. | Writing aid |
WO2019050566A1 (en) | 2017-09-11 | 2019-03-14 | Fujifilm Electronic Materials U.S.A., Inc. | DIELECTRIC FILMOGENEOUS COMPOSITION |
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- 2015-08-10 EP EP15835421.7A patent/EP3187556B1/en active Active
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- 2015-08-10 JP JP2015557253A patent/JP6429802B2/ja active Active
- 2015-08-10 WO PCT/JP2015/072717 patent/WO2016031554A1/ja active Application Filing
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Also Published As
Publication number | Publication date |
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EP3187556B1 (en) | 2023-08-30 |
CN106459682A (zh) | 2017-02-22 |
EP3187556A4 (en) | 2018-02-21 |
JPWO2016031554A1 (ja) | 2017-04-27 |
KR20170005433A (ko) | 2017-01-13 |
KR101961996B1 (ko) | 2019-03-25 |
SG11201700740QA (en) | 2017-02-27 |
US20170152405A1 (en) | 2017-06-01 |
PT3187556T (pt) | 2023-12-07 |
PH12017500376B1 (en) | 2017-07-17 |
CN106459682B (zh) | 2019-09-24 |
JP6429802B2 (ja) | 2018-11-28 |
MY181184A (en) | 2020-12-21 |
EP3187556A1 (en) | 2017-07-05 |
PH12017500376A1 (en) | 2017-07-17 |
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