WO2022085741A1 - 回路接続用接着剤フィルム、接続構造体、及び接続構造体の製造方法 - Google Patents
回路接続用接着剤フィルム、接続構造体、及び接続構造体の製造方法 Download PDFInfo
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- WO2022085741A1 WO2022085741A1 PCT/JP2021/038830 JP2021038830W WO2022085741A1 WO 2022085741 A1 WO2022085741 A1 WO 2022085741A1 JP 2021038830 W JP2021038830 W JP 2021038830W WO 2022085741 A1 WO2022085741 A1 WO 2022085741A1
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- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- HIMXYMYMHUAZLW-UHFFFAOYSA-N [[[dimethyl(phenyl)silyl]amino]-dimethylsilyl]benzene Chemical compound C=1C=CC=CC=1[Si](C)(C)N[Si](C)(C)C1=CC=CC=C1 HIMXYMYMHUAZLW-UHFFFAOYSA-N 0.000 description 1
- WYUIWUCVZCRTRH-UHFFFAOYSA-N [[[ethenyl(dimethyl)silyl]amino]-dimethylsilyl]ethene Chemical compound C=C[Si](C)(C)N[Si](C)(C)C=C WYUIWUCVZCRTRH-UHFFFAOYSA-N 0.000 description 1
- RMKZLFMHXZAGTM-UHFFFAOYSA-N [dimethoxy(propyl)silyl]oxymethyl prop-2-enoate Chemical compound CCC[Si](OC)(OC)OCOC(=O)C=C RMKZLFMHXZAGTM-UHFFFAOYSA-N 0.000 description 1
- ADANNTOYRVPQLJ-UHFFFAOYSA-N [dimethyl(trimethylsilyloxy)silyl]oxy-[[dimethyl(trimethylsilyloxy)silyl]oxy-dimethylsilyl]oxy-dimethylsilane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C ADANNTOYRVPQLJ-UHFFFAOYSA-N 0.000 description 1
- YFCGDEUVHLPRCZ-UHFFFAOYSA-N [dimethyl(trimethylsilyloxy)silyl]oxy-dimethyl-trimethylsilyloxysilane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C YFCGDEUVHLPRCZ-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000003522 acrylic cement Substances 0.000 description 1
- 229920000800 acrylic rubber Polymers 0.000 description 1
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 1
- 125000004453 alkoxycarbonyl group Chemical group 0.000 description 1
- 125000003282 alkyl amino group Chemical group 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- MNFORVFSTILPAW-UHFFFAOYSA-N azetidin-2-one Chemical compound O=C1CCN1 MNFORVFSTILPAW-UHFFFAOYSA-N 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- FFZVILRAPIUNAA-UHFFFAOYSA-N benzyl-dimethyl-phenylazanium Chemical compound C=1C=CC=CC=1[N+](C)(C)CC1=CC=CC=C1 FFZVILRAPIUNAA-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical class C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 238000011088 calibration curve Methods 0.000 description 1
- 125000005392 carboxamide group Chemical group NC(=O)* 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000011231 conductive filler Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910002026 crystalline silica Inorganic materials 0.000 description 1
- WVIIMZNLDWSIRH-UHFFFAOYSA-N cyclohexylcyclohexane Chemical group C1CCCCC1C1CCCCC1 WVIIMZNLDWSIRH-UHFFFAOYSA-N 0.000 description 1
- KQAHMVLQCSALSX-UHFFFAOYSA-N decyl(trimethoxy)silane Chemical compound CCCCCCCCCC[Si](OC)(OC)OC KQAHMVLQCSALSX-UHFFFAOYSA-N 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000012954 diazonium Substances 0.000 description 1
- 150000001989 diazonium salts Chemical class 0.000 description 1
- JJQZDUKDJDQPMQ-UHFFFAOYSA-N dimethoxy(dimethyl)silane Chemical compound CO[Si](C)(C)OC JJQZDUKDJDQPMQ-UHFFFAOYSA-N 0.000 description 1
- AHUXYBVKTIBBJW-UHFFFAOYSA-N dimethoxy(diphenyl)silane Chemical compound C=1C=CC=CC=1[Si](OC)(OC)C1=CC=CC=C1 AHUXYBVKTIBBJW-UHFFFAOYSA-N 0.000 description 1
- WHGNXNCOTZPEEK-UHFFFAOYSA-N dimethoxy-methyl-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](C)(OC)CCCOCC1CO1 WHGNXNCOTZPEEK-UHFFFAOYSA-N 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- DDFDYGSYHQUDKR-UHFFFAOYSA-N dimethyl-(naphthalen-1-ylmethyl)-phenylazanium Chemical compound C=1C=CC2=CC=CC=C2C=1C[N+](C)(C)C1=CC=CC=C1 DDFDYGSYHQUDKR-UHFFFAOYSA-N 0.000 description 1
- MEDVRQOQUBWLSI-UHFFFAOYSA-N dimethyl-[(4-nitrophenyl)methyl]-phenylazanium Chemical compound C=1C=CC=CC=1[N+](C)(C)CC1=CC=C([N+]([O-])=O)C=C1 MEDVRQOQUBWLSI-UHFFFAOYSA-N 0.000 description 1
- AAEYCBWQYQEEEF-UHFFFAOYSA-N dimethyl-phenyl-(3-phenylprop-2-enyl)azanium Chemical compound C=1C=CC=CC=1[N+](C)(C)CC=CC1=CC=CC=C1 AAEYCBWQYQEEEF-UHFFFAOYSA-N 0.000 description 1
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 description 1
- YYLGKUPAFFKGRQ-UHFFFAOYSA-N dimethyldiethoxysilane Chemical compound CCO[Si](C)(C)OCC YYLGKUPAFFKGRQ-UHFFFAOYSA-N 0.000 description 1
- FBZANXDWQAVSTQ-UHFFFAOYSA-N dodecamethylpentasiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C FBZANXDWQAVSTQ-UHFFFAOYSA-N 0.000 description 1
- 229940087203 dodecamethylpentasiloxane Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 229920006332 epoxy adhesive Polymers 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- KPWVUBSQUODFPP-UHFFFAOYSA-N ethenyl-(ethenyl-methyl-phenylsilyl)oxy-methyl-phenylsilane Chemical compound C=1C=CC=CC=1[Si](C)(C=C)O[Si](C)(C=C)C1=CC=CC=C1 KPWVUBSQUODFPP-UHFFFAOYSA-N 0.000 description 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N ethyl acetate Substances CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- XKJMJYZFAWYREL-UHFFFAOYSA-N hexadecamethylcyclooctasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 XKJMJYZFAWYREL-UHFFFAOYSA-N 0.000 description 1
- UQEAIHBTYFGYIE-UHFFFAOYSA-N hexamethyldisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)C UQEAIHBTYFGYIE-UHFFFAOYSA-N 0.000 description 1
- 229940073561 hexamethyldisiloxane Drugs 0.000 description 1
- CZWLNMOIEMTDJY-UHFFFAOYSA-N hexyl(trimethoxy)silane Chemical compound CCCCCC[Si](OC)(OC)OC CZWLNMOIEMTDJY-UHFFFAOYSA-N 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical class I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- CDHRQJOOOVAAFQ-UHFFFAOYSA-N methoxy-[methoxy(diphenyl)silyl]oxy-diphenylsilane Chemical compound C=1C=CC=CC=1[Si](C=1C=CC=CC=1)(OC)O[Si](OC)(C=1C=CC=CC=1)C1=CC=CC=C1 CDHRQJOOOVAAFQ-UHFFFAOYSA-N 0.000 description 1
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 1
- MQWFLKHKWJMCEN-UHFFFAOYSA-N n'-[3-[dimethoxy(methyl)silyl]propyl]ethane-1,2-diamine Chemical compound CO[Si](C)(OC)CCCNCCN MQWFLKHKWJMCEN-UHFFFAOYSA-N 0.000 description 1
- DRRZZMBHJXLZRS-UHFFFAOYSA-N n-[3-[dimethoxy(methyl)silyl]propyl]cyclohexanamine Chemical compound CO[Si](C)(OC)CCCNC1CCCCC1 DRRZZMBHJXLZRS-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- HMMGMWAXVFQUOA-UHFFFAOYSA-N octamethylcyclotetrasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 HMMGMWAXVFQUOA-UHFFFAOYSA-N 0.000 description 1
- CXQXSVUQTKDNFP-UHFFFAOYSA-N octamethyltrisiloxane Chemical compound C[Si](C)(C)O[Si](C)(C)O[Si](C)(C)C CXQXSVUQTKDNFP-UHFFFAOYSA-N 0.000 description 1
- MSRJTTSHWYDFIU-UHFFFAOYSA-N octyltriethoxysilane Chemical compound CCCCCCCC[Si](OCC)(OCC)OCC MSRJTTSHWYDFIU-UHFFFAOYSA-N 0.000 description 1
- 229960003493 octyltriethoxysilane Drugs 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 125000001181 organosilyl group Chemical group [SiH3]* 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 150000004714 phosphonium salts Chemical class 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- XUWHAWMETYGRKB-UHFFFAOYSA-N piperidin-2-one Chemical compound O=C1CCCCN1 XUWHAWMETYGRKB-UHFFFAOYSA-N 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- DHERNFAJQNHYBM-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1.O=C1CCCN1 DHERNFAJQNHYBM-UHFFFAOYSA-N 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- GSANOGQCVHBHIF-UHFFFAOYSA-N tetradecamethylcycloheptasiloxane Chemical compound C[Si]1(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O[Si](C)(C)O1 GSANOGQCVHBHIF-UHFFFAOYSA-N 0.000 description 1
- 229940008424 tetradecamethylhexasiloxane Drugs 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- WUMSTCDLAYQDNO-UHFFFAOYSA-N triethoxy(hexyl)silane Chemical compound CCCCCC[Si](OCC)(OCC)OCC WUMSTCDLAYQDNO-UHFFFAOYSA-N 0.000 description 1
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 1
- JCVQKRGIASEUKR-UHFFFAOYSA-N triethoxy(phenyl)silane Chemical compound CCO[Si](OCC)(OCC)C1=CC=CC=C1 JCVQKRGIASEUKR-UHFFFAOYSA-N 0.000 description 1
- NBXZNTLFQLUFES-UHFFFAOYSA-N triethoxy(propyl)silane Chemical compound CCC[Si](OCC)(OCC)OCC NBXZNTLFQLUFES-UHFFFAOYSA-N 0.000 description 1
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- GFKCWAROGHMSTC-UHFFFAOYSA-N trimethoxy(6-trimethoxysilylhexyl)silane Chemical compound CO[Si](OC)(OC)CCCCCC[Si](OC)(OC)OC GFKCWAROGHMSTC-UHFFFAOYSA-N 0.000 description 1
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 description 1
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 description 1
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 description 1
- 125000001680 trimethoxyphenyl group Chemical group 0.000 description 1
- XOAJIYVOSJHEQB-UHFFFAOYSA-N trimethyl trimethoxysilyl silicate Chemical compound CO[Si](OC)(OC)O[Si](OC)(OC)OC XOAJIYVOSJHEQB-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Images
Classifications
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
-
- 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
- C09J163/00—Adhesives based on epoxy resins; Adhesives based on derivatives of epoxy resins
-
- 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
- C09J9/00—Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks
- C09J9/02—Electrically-conducting adhesives
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/16—Non-insulated conductors or conductive bodies characterised by their form comprising conductive material in insulating or poorly conductive material, e.g. conductive rubber
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
- H01R11/01—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the form or arrangement of the conductive interconnection between the connecting locations
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/04—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation using electrically conductive adhesives
-
- 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
- C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
- C09J2301/208—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive layer being constituted by at least two or more adjacent or superposed adhesive layers, e.g. multilayer adhesive
Definitions
- the present disclosure relates to an adhesive film for circuit connection, a connection structure, and a method for manufacturing the connection structure.
- a circuit connection adhesive film in which conductive particles are dispersed in a circuit connection material such as an epoxy adhesive or an acrylic adhesive that heats and pressurizes the opposing circuits and electrically connects the electrodes in the pressurizing direction (different).
- the conductive film) is mainly a TCP (Tape Carrier Package) or COF (Chip On Flex) and an LCD panel on which a semiconductor for driving a liquid crystal display (LCD) is mounted, or electricity between a TCP or COF and a printed wiring board. Widely used for target connection.
- connection resistance value Even when the circuit connection structure is exposed to a high temperature and high humidity environment (for example, 85 ° C., 85% RH) for a long period of time (for example, 250 hours) after the circuit member is connected to the circuit connection adhesive film. It is required to suppress peeling to the electrode portion and to show an excellent resistance value (connection resistance value).
- the circuit connection structure is placed in a high temperature and high humidity environment (for example, 85) after the circuit members are connected to each other, while having excellent adhesiveness to the circuit members even when stored in contact with air.
- a high temperature and high humidity environment for example, 85
- An adhesive film for circuit connection that can ensure connection reliability between opposing electrodes even when exposed to °C, 85% RH for a long period of time, and a connection structure using the adhesive film for circuit connection. And to provide a method of manufacturing a connection structure.
- One aspect of the present disclosure relates to a circuit connection adhesive film containing an amide having a lactam ring, a cationically polymerizable compound, a thermal polymerization initiator, and conductive particles.
- the circuit connection adhesive film which is one aspect of the present disclosure, by having the above configuration, in the connection between circuit members, when the circuit connection adhesive film is attached to the circuit members, the circuit connection is made. While the adhesive film for use and the circuit member are sufficiently brought into close contact with each other, the connection resistance between the opposing electrodes can be sufficiently reduced. In particular, since the circuit connection adhesive film contains an amide having a lactam ring, the circuit connection adhesive film has excellent adhesiveness to circuit members even when stored in contact with air.
- the circuit connection structure is exposed to a high temperature and high humidity environment (for example, 85 ° C., 85% RH) for a long period of time after the circuit members are connected to each other, the connection reliability between the opposing electrodes can be ensured.
- a high temperature and high humidity environment for example, 85 ° C., 85% RH
- the connection reliability between the opposing electrodes can be ensured.
- the reason why the above effect can be obtained by containing the amide having a lactam ring in the adhesive film for circuit connection is that the deterioration of the film surface is suppressed by containing the amide having a lactam ring, and the resin on the film surface is obtained. It is presumed that this is because the state of can be maintained in the same state as the resin inside the film.
- the number of carbon atoms constituting the lactam ring of the amide may be 3 to 12.
- the amide may contain ⁇ -caprolactam.
- the cationically polymerizable compound may contain at least one selected from the group consisting of an oxetane compound and an alicyclic epoxy compound.
- a W / B W is 0.001 when the mass-based content of the amide is A W and the mass-based content of the thermal polymerization initiator is B W. It may be ⁇ 0.2.
- the circuit connection adhesive film includes a first adhesive layer and a second adhesive layer laminated on the first adhesive layer, and the first adhesive layer is the above.
- the amide, the cationically polymerizable compound, the thermal polymerization initiator, and the conductive particles may be contained.
- a connection structure comprising a connection portion for electrically connecting the first electrode and the second electrode to each other, wherein the connection portion contains a cured product of the adhesive film for circuit connection.
- the circuit connection adhesive film is interposed between the first circuit member having the first electrode and the second circuit member having the second electrode, and the above is described.
- the present invention relates to a method for manufacturing a connection structure, comprising a step of thermocompression bonding the first circuit member and the second circuit member to electrically connect the first electrode and the second electrode to each other.
- the circuit connection structure in the connection between circuit members, has a high temperature after the circuit members are connected to each other, while having excellent adhesiveness to the circuit members even when stored in contact with air.
- a circuit connection adhesive film that can ensure connection reliability between facing electrodes even when exposed to a high humidity environment (for example, 85 ° C., 85% RH) for a long period of time, and the circuit connection adhesive. It is possible to provide a connection structure using a film and a method for manufacturing the connection structure.
- One embodiment of the present disclosure comprises (a) an amide having a lactam ring, (b) a cationically polymerizable compound, (c) a thermal polymerization initiator, and (d) conductive particles for circuit connection. It is an adhesive film. That is, one embodiment of the present disclosure is an adhesive film for circuit connection, which contains an adhesive component containing the components (a) to (c) and conductive particles dispersed in the adhesive component.
- a high temperature and high humidity environment for example, 85 ° C, 85% RH
- the amide having a lactam ring may have 3 to 12 carbon atoms constituting the lactam ring.
- the number of carbon atoms constituting the lactam ring is a viewpoint that it is easier to secure the connection reliability between the opposing electrodes even when the circuit connection structure is exposed to a high temperature and high humidity environment (for example, 85 ° C., 85% RH) for a long period of time. Therefore, it may be 3 to 10, 3 to 8, 3 to 7, or 3 to 6.
- the amide having a lactam ring may have a functional group attached to the lactam ring.
- Such functional groups include a carboxy group, a carboxylic acid base, a hydroxy group, an alkoxy group, an alkyl group, an ester group, a sulfo group, a sulfonic acid base, a carbonyl group, an amino group, an amide group, a carboxamide group, a nitro group and a cyano group.
- Groups, halogen atoms and the like can be mentioned.
- the amide having a lactam ring has a viewpoint that it is easy to obtain excellent stickability to the circuit member even if it is stored in contact with air in the connection between the circuit members, and a circuit connection structure after the circuit members are connected to each other.
- 2-azetidineone, 2-pyrrolidinone (2-pyrrolidone) from the viewpoint of ensuring connection reliability between facing electrodes even when exposed to a high temperature and high humidity environment (for example, 85 ° C., 85% RH) for a long period of time.
- 2-Piperidinone, ⁇ -caprolactam, caprolactam, laurolactam ( ⁇ -laurin lactam) may contain at least one selected from the group, and may contain ⁇ -caprolactam.
- the content of ⁇ -caprolactam may be 80% by mass or more, 90% by mass or more, 95% by mass or more, or 100% by mass, based on the total mass of the amide having a lactam ring.
- the content of the amide having a lactam ring is from the viewpoint that it is easy to obtain excellent adhesiveness to the circuit member even if it is stored in contact with air in the connection between the circuit members, and the circuit after the circuit members are connected to each other.
- the total mass of the adhesive film for circuit connection from the viewpoint of easily ensuring the connection reliability between the opposing electrodes even when the connection structure is exposed to a high temperature and high humidity environment (for example, 85 ° C., 85% RH) for a long period of time. It may be 0.001% by mass or more, 0.003% by mass or more, or 0.005% by mass or more based on the above.
- the content of the amide having a lactam ring is 2.0% by mass or less, 1.0% by mass or less, or 0.8% by mass or less based on the total mass of the adhesive film for circuit connection. It may be there. From these viewpoints, the content of the amide having a lactam ring is 0.001 to 2.0% by mass, 0.003 to 1.0% by mass, 0. It may be 005 to 0.8% by mass.
- the content of the amide having a lactam ring is from the viewpoint that it is easy to obtain excellent stickability to the circuit member even if it is stored in contact with air in the connection between the circuit members, and the circuit after the circuit members are connected to each other.
- Circuit connection adhesive excluding conductive particles from the viewpoint of easily ensuring connection reliability between facing electrodes even when the connection structure is exposed to a high temperature and high humidity environment (for example, 85 ° C, 85% RH) for a long period of time. It may be 0.003% by mass or more, 0.006% by mass or more, or 0.009% by mass or more based on the total mass of the film.
- the content of the amide having a lactam ring is 3.0% by mass or less, 2.0% by mass or less, or 1.0 based on the total mass of the adhesive film for circuit connection excluding conductive particles. It may be mass% or less. From these viewpoints, the content of the amide having a lactam ring is 0.003 to 3.0% by mass and 0.006 to 2.0% by mass based on the total mass of the adhesive film for circuit connection excluding the conductive particles. %, 0.009 to 1.0% by mass.
- the content of the amide having a lactam ring is from the viewpoint that when the circuit members are connected to each other, it is easy to obtain excellent adhesiveness to the circuit members even if they are stored in contact with air, and the circuit after the circuit members are connected to each other.
- Circuit connection excluding conductive particles and filler from the viewpoint of easily ensuring connection reliability between facing electrodes even when the connection structure is exposed to a high temperature and high humidity environment (for example, 85 ° C., 85% RH) for a long period of time. Based on the total mass of the adhesive film for use, it may be 0.005% by mass or more, 0.008% by mass or more, or 0.01% by mass or more.
- the content of the amide having a lactam ring is 4.0% by mass or less, 3.0% by mass or less, or 3.0% by mass or less, based on the total mass of the adhesive film for circuit connection excluding conductive particles and filler. It may be 2.0% by mass or less. From these viewpoints, the content of the amide having a lactam ring is 0.005 to 4.0% by mass and 0.008 to 3 based on the total mass of the adhesive film for circuit connection excluding the conductive particles and the filler. It may be 0.0% by mass and 0.01 to 2.0% by mass.
- the cationically polymerizable compound is, for example, a compound that crosslinks by reacting with a thermal polymerization initiator by heat.
- the cationically polymerizable compound may contain at least one selected from the group consisting of an oxetane compound and an alicyclic epoxy compound from the viewpoint of low temperature rapid curing (low temperature short time curing), and the oxetane compound and the alicyclic epoxy compound may be contained. May include.
- the cationically polymerizable compound may be used alone or in combination of two or more.
- oxetane compound examples include 2-ethylhexyl oxetane, 3-hydroxymethyl-3-methyloxetane, 3-hydroxymethyl-3-ethyloxetane, 3-hydroxymethyl-3-propyloxetane, and 3-hydroxymethyl-3-normalbutyl.
- the alicyclic epoxy compound as a cationically polymerizable compound is, for example, 3', 4'-epoxycyclohexylmethyl-3,4-epoxycyclohexanecarboxylate (bi-7-oxabicyclo [4,1,0] heptane), and the like. It may be 3,4-epoxycyclohexylmethyl (meth) acrylate, (3,3', 4,4'-diepoxy) bicyclohexyl, hydrogenated bisphenol A type epoxy resin, hydrogenated bisphenol F type epoxy resin.
- the content of the cationically polymerizable compound is 10% by mass or more, 15% by mass or more, or 20% by mass based on the total mass of the circuit connection adhesive film from the viewpoint of ensuring the curability of the circuit connection adhesive film. It may be% or more.
- the content of the cationically polymerizable compound is 50% by mass or less, 40% by mass or less, or 30% by mass based on the total mass of the circuit connection adhesive film from the viewpoint of ensuring the formability of the circuit connection adhesive film. It may be less than or equal to%. From these viewpoints, the content of the cationically polymerizable compound may be 10 to 50% by mass, 15 to 40% by mass, or 20 to 30% by mass based on the total mass of the adhesive film for circuit connection.
- the ratio of the mass-based content of the oxetane compound to the mass-based content of the alicyclic epoxy compound (based on the mass of the oxetane compound).
- the content / content based on the mass of the alicyclic epoxy compound) is 0.2 to 5.0, 0.5 to 4.0, 1.0 to 3. from the viewpoint of improving the reactivity of the oxetane compound. It may be 0 or 1.5 to 2.5.
- the thermal polymerization initiator is a compound that initiates polymerization by generating an acid or the like by heating, and may be a compound composed of a cation and an anion.
- the thermal polymerization initiators are, for example, SbF 6- , PF 6- , PF X (CF 3 ) 6-X- (where X is an integer of 1 to 5), BF 4- , B (C 6 F 5 ) 4 - , RSO 3- ( where R is an alkyl group with 1 to 3 carbon atoms, substituted or unsubstituted aryl group), C (SO 2 CF 3 ) 3- , sulfonium salt, phosphonium salt, ammonium having anions such as Examples thereof include onium salts such as salts, diazonium salts, iodonium salts and arylinium salts. These may be used alone or in combination of two or more.
- the onium salt as the thermal polymerization initiator may contain an anilinium salt from the viewpoint of low temperature curability and storage stability, and may contain an N-alkylanilinium salt, an N-benzylanilinium salt, or an N, N-dialkylanily. It may contain at least one selected from the group consisting of nium salts and N, N, N-trialkylanilinium salts.
- anilinium salts the hydrocarbon group bonded to the nitrogen atom may have a substituent.
- anilinium salt examples include N-benzyl-N, N-dimethylanilinium tetrakispentafluorophenylborate, N- (4-nitrobenzyl) -N, N-dimethylanilinium tetrakispentafluorophenylborate, N- (4-methoxy).
- the anilinium salt as the thermal polymerization initiator may have an N-benzylanilinium derivative structure represented by the following formula (1) from the viewpoint that the polymerization initiation temperature can be set with a high degree of freedom by selecting the thermal polymerization initiator. good.
- R 1 , R 2 , R 3 , R 8 , R 9 and R 10 are independently hydrogen atom, halogen atom, alkyl group having 1 to 3 carbon atoms, and 1 to 3 carbon atoms, respectively.
- R 4 and R 5 are independently hydrogen atoms and alkyl having 1 to 3 carbon atoms, respectively.
- a group or a halogen atom is indicated, R 6 and R 7 each independently indicate a halogen atom and an alkyl group having 1 to 3 carbon atoms, and
- X ⁇ is SbF 6 ⁇ , PF 6 ⁇ , PF X (CF).
- anilinium salts satisfying the above formula (1) include K-PURE CXC-1612, K-PURE CXC-1733, K-PURE CXC-1738, K-PURE TAG-2678, and K-PURE CXC-. 1614, K-PURE TAG-2689, K-PURE TAG-2690, K-PURE TAG-2700, K-PURE CXC-1802-60, K-PURE CXC-1821 (manufactured by King Industries) and the like.
- the content of the thermal polymerization initiator is 0.5% by mass or more, 1.0% by mass or more, or 3.0 based on the total mass of the adhesive film for circuit connection from the viewpoint of sufficiently promoting the curing reaction. It may be mass% or more.
- the content of the thermal polymerization initiator is 20% by mass or less, 15% by mass or less, or 10% by mass or less based on the total mass of the adhesive film for circuit connection from the viewpoint of improving the physical properties of the cured product. good. From these viewpoints, the content of the thermal polymerization initiator is 0.5 to 20% by mass, 1.0 to 15% by mass, or 3.0 to 10% by mass based on the total mass of the adhesive film for circuit connection. May be%.
- the ratio of A W to B W may be 0.001 or more, 0.01 or more, or 0.05 or more from the viewpoint of easily obtaining better stickability to the circuit member.
- the ratio of A W to B W may be 0.2 or less, 0.15 or less, or 0.1 or less from the viewpoint of suppressing an increase in the mounting temperature. From these viewpoints, the ratio of A W to B W (A W / B W ) may be 0.001 to 0.2, 0.01 to 0.15, or 0.05 to 0.1. ..
- the conductive particles are not particularly limited as long as they are conductive particles, and are composed of metal particles made of metals such as gold, silver, palladium, nickel, copper, and solder, and conductive carbon. It may be conductive carbon particles or the like.
- the conductive particles may be coated conductive particles including a nucleus containing non-conductive glass, ceramic, plastic (polystyrene, etc.) and the like, and a coating layer containing the metal or conductive carbon and covering the nucleus.
- the conductive particles may include at least one selected from the group consisting of metal particles formed of a heat-meltable metal and coated conductive particles, and may include coated conductive particles.
- the coated conductive particles can be easily deformed by heating and / or pressurizing, when the electrodes are electrically connected to each other, the contact area between the electrodes and the conductive particles is increased, and the conductivity between the electrodes is increased. Can be further improved.
- the average particle size of the conductive particles may be 1.0 ⁇ m or more, 2.0 ⁇ m or more, or 2.5 ⁇ m or more from the viewpoint of excellent dispersibility and conductivity.
- the average particle diameter of the conductive particles may be 6.0 ⁇ m or less, 5.5 ⁇ m or less, or 5.0 ⁇ m or less from the viewpoint of ensuring the insulating property between the adjacent electrodes. From these viewpoints, the average particle size of the conductive particles may be 1.0 to 6.0 ⁇ m, 2.0 to 5.5 ⁇ m, or 2.5 to 5.0 ⁇ m.
- the average particle size of the conductive particles was determined by measuring the particle size of 300 conductive particles contained in the adhesive film for circuit connection by observing with a scanning electron microscope (SEM). Use the average value.
- the particle diameter of the conductive particles is the diameter of a circle circumscribing the conductive particles in the observation image by SEM.
- the conductive particles may be uniformly dispersed.
- the particle density of the conductive particles in the adhesive film for circuit connection may be 100 pieces / mm 2 or more, 1000 pieces / mm 2 or more, or 3000 pieces / mm 2 or more from the viewpoint of obtaining stable connection resistance.
- the particle density of the conductive particles in the adhesive film for circuit connection is 100,000 pieces / mm 2 or less, 50,000 pieces / mm 2 or less, or 30,000 pieces / mm 2 or less from the viewpoint of ensuring the insulating property between adjacent electrodes. It's okay. From these viewpoints, the particle density of the conductive particles in the adhesive film for circuit connection may be 100 to 100,000 particles / mm 2 , 1000 to 50,000 particles / mm 2 , or 3000 to 30,000 particles / mm 2 .
- the content of the conductive particles may be 10% by mass or more, 20% by mass or more, or 30% by mass or more based on the total mass of the adhesive film for circuit connection.
- the content of the conductive particles may be 60% by mass or less, 50% by mass or less, or 40% by mass or less based on the total mass of the adhesive film for circuit connection.
- the circuit connection adhesive film may further contain other components in addition to the above components (a) to (d).
- other components include (e) a thermoplastic resin, (f) a coupling agent, and (g) a filler.
- the adhesive film for circuit connection contains a thermoplastic resin, so that it can be easily formed into a film.
- the thermoplastic resin include phenoxy resin, polyester resin, polyamide resin, polyurethane resin, polyester urethane resin, acrylic rubber, and epoxy resin (solid at 25 ° C.). These may be used alone or in combination of two or more.
- the weight average molecular weight (Mw) of the thermoplastic resin may be, for example, 5000 to 200,000, 10000 to 100,000, 20000 to 80000, or 40,000 to 60000.
- the weight average molecular weight of the thermoplastic resin means a value measured by gel permeation chromatography (GPC) and converted using a calibration curve made of standard polystyrene.
- the content of the thermoplastic resin may be 1.0% by mass or more, 5.0% by mass or more, 10% by mass or more, or 15% by mass or more based on the total mass of the adhesive film for circuit connection.
- the content of the thermoplastic resin may be 50% by mass or less, 40% by mass or less, 30% by mass or less, or 20% by mass or less based on the total mass of the adhesive film for circuit connection.
- the content of the thermoplastic resin is 1.0 to 50% by mass, 5.0 to 40% by mass, 10 to 30% by mass, or 15 to 20% by mass based on the total mass of the adhesive film for circuit connection. It may be there.
- the adhesive film for circuit connection can further improve the adhesiveness by containing the coupling agent.
- the coupling agent may be, for example, a silane coupling agent.
- Examples of the coupling agent include vinyltrimethoxysilane, vinyltriethoxysilane, 3-glycidoxypropyltrimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane, and 3- (meth) acryloxypropylmethyldimethoxysilane.
- the content of the coupling agent is 0.1% by mass or more, 0.5% by mass or more, 1.0% by mass or more, or 1.5% by mass or more based on the total mass of the adhesive film for circuit connection. It may be there.
- the content of the coupling agent is 10% by mass or less, 8.0% by mass or less, 5.0% by mass or less, or 3.0% by mass or less based on the total mass of the adhesive film for circuit connection. good.
- the content of the coupling agent is 0.1 to 10% by mass, 0.5 to 8.0% by mass, 1.0 to 5.0% by mass, or 100% by mass, based on the total mass of the adhesive film for circuit connection. It may be 1.5 to 3.0% by mass.
- the adhesive film for circuit connection contains a filling material, so that the connection reliability can be further improved.
- the filler include non-conductive fillers (for example, non-conductive particles).
- the filler may be either an inorganic filler or an organic filler.
- the inorganic filler examples include metal oxide particles such as silica particles, alumina particles, silica-alumina particles, titania particles, and zirconia particles; and metal nitride particles. These may be used alone or in combination of two or more.
- organic filler examples include silicone particles, methacrylate / butadiene / styrene particles, acrylic / silicone particles, polyamide particles, polyimide particles and the like. These may be used alone or in combination of two or more.
- the filler may contain an inorganic filler and may contain silica particles from the viewpoint of improving the film formability and the reliability of the connecting structure.
- the silica particles may be crystalline silica particles or amorphous silica particles, and these silica particles may be synthetic products.
- the method for synthesizing silica may be a dry method or a wet method.
- the silica particles may contain at least one selected from the group consisting of fumed silica particles and sol-gel silica particles.
- the silica particles may be surface-treated silica particles from the viewpoint of excellent dispersibility in the adhesive component.
- the surface-treated silica particles may be, for example, silica particles surface-treated with a silane compound such as an alkoxysilane compound, a disilazan compound, or a siloxane compound, or may be silica particles surface-treated with a silane coupling agent. ..
- the surface-treated silica particles are, for example, obtained by hydrophobizing the hydroxyl groups on the surface of the silica particles with a silane compound or a silane coupling agent.
- alkoxysilane compound examples include methyltrimethoxysilane, dimethyldimethoxysilane, phenyltrimethoxysilane, dimethoxydiphenylsilane, tetraethoxysilane, methyltriethoxysilane, dimethyldiethoxysilane, phenyltriethoxysilane, and n-propyltrimethoxysilane.
- n-propyltriethoxysilane, hexyltrimethoxysilane, hexyltriethoxysilane, octyltriethoxysilane, decyltrimethoxysilane, 1,6-bis (trimethoxysilyl) hexane, 3,3,3-trifluoropropyltrimethoxy Examples include silane.
- disilazane compound examples include 1,1,1,3,3,3-hexamethyldisilazane, 1,3-diphenyltetramethyldisilazane, and 1,3-bis (3,3,3-trifluoropropyl)-. Examples thereof include 1,1,3,3,-tetramethyldisilazane and 1,3-divinyl-1,1,3,3-tetramethyldisilazane.
- siloxane compound examples include tetradecamethylcycloheptasiloxane, decamethylcyclopentasiloxane, hexaphenylcyclosiloxane, octadecamethylcyclononasiloxane, hexadecamethylcyclooctasiloxane, dodecamethylcyclohexasiloxane, octaphenylcyclotetrasiloxane, and hexa.
- silane coupling agent examples include vinyltrimethoxysilane, vinyltriethoxysilane, 2- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, 3-glycidoxypropylmethyldimethoxysilane, and 3-glycidoxypropyltrimethoxy.
- Silane 3-glycidoxypropylmethyldiethoxysilane, 3-glycidoxypropyltriethoxysilane, p-styryltrimethoxysilane, 3-methacryloxypropylmethyldimethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3- Methacryloxypropylmethyldiethoxysilane, 3-methacryloxypropyltriethoxysilane, 3-acryloxypropyltrimethoxysilane, N-2- (aminoethyl) -3-aminopropylmethyldimethoxysilane, N-2- (aminoethyl) ) -3-Aminopropyltrimethoxysilane, 3-Aminopropyltrimethoxysilane, 3-Aminopropyltrimethoxysilane, 3-Aminopropyltriethoxysilane, 3-Triethoxysilyl-N- (1,3-dimethyl-but
- Silane particles surface-treated with a silane compound or a silane coupling agent have 3-methacryloxypropyltrimethoxysilane, vinyltrimethoxysilane, and trimethoxyphenyl in order to further hydrophobize the water-acidic group residues on the surface of the silica particles.
- the surface may be treated with a silane compound such as silane to further make it hydrophobic.
- the surface-treated silica particles are made of silica and tri.
- Reaction product with methoxyoctylsilane hydrolysis product
- reaction product between silica and dimethylsiloxane reaction product between silicon dioxide or silica and dichloro (dimethyl) silane
- reaction between silica and bis (trimethylsilyl) amine It may contain at least one selected from the group consisting of a product (hydrolysis product) and a reaction product of silica and hexamethyldisilazane, a reaction product of silica and trimethoxyoctylsilane, and silica and bis (). It may contain at least one selected from the group consisting of reaction products of trimethylsilyl) amine.
- the content of the filler may be 0.1% by mass or more, 1.0% by mass or more, 5.0% by mass or more, or 10% by mass or more based on the total mass of the adhesive film for circuit connection. ..
- the content of the filler may be 50% by mass or less, 40% by mass or less, 30% by mass or less, or 20% by mass or less based on the total mass of the adhesive film for circuit connection.
- the content of the filler is 0.1 to 50% by mass, 1.0 to 40% by mass, 5.0 to 30% by mass, or 10 to 20% by mass based on the total mass of the adhesive film for circuit connection. May be.
- the circuit connection adhesive film is an adhesive containing at least the above-mentioned components (a) to (c) and (d) conductive particles dispersed in the adhesive component.
- a layer made of the composition (first adhesive layer) is provided.
- the circuit connection adhesive film may have a single-layer structure composed of a first adhesive layer, or may have a multi-layer structure having a first adhesive layer and a layer other than the first adhesive layer.
- the content of the above-mentioned components (a) to (g) may be within the above-mentioned range based on the total mass of each layer.
- the circuit connection adhesive film may be provided on a base material (for example, PET film) or the like.
- the circuit connection adhesive film with a substrate is based on, for example, an adhesive composition containing at least the above-mentioned (a) to (d) using a knife coater, a roll coater, an applicator, a comma coater, a die coater, or the like. It can be manufactured by applying it on a material.
- FIG. 1 is a schematic cross-sectional view showing an adhesive film for circuit connection according to an embodiment.
- the circuit connection adhesive film 1 is composed of a single layer composed of an adhesive component 2 and conductive particles 3 dispersed in the adhesive component 2.
- the adhesive component 2 contains at least the above-mentioned components (a) to (c), and the conductive particles 3 may be the above-mentioned component (d).
- the circuit connection adhesive film 1 may be in an uncured state or may be in a partially cured state.
- the thickness of the circuit connection adhesive film 1 may be, for example, 5 ⁇ m or more or 10 ⁇ m or more, and may be 30 ⁇ m or less or 20 ⁇ m or less.
- the thickness of the circuit connection adhesive film 1 may be 5 to 30 ⁇ m or 10 to 20 ⁇ m.
- the circuit-connecting adhesive film may have a multilayer structure having two or more layers.
- the circuit-connecting adhesive film 1 is a layer containing conductive particles 3A (as shown in FIG. 2).
- a first adhesive layer composed of an adhesive component 2A and conductive particles 3A dispersed in the adhesive component 2A) 1A, and a layer not containing conductive particles (a second adhesive layer composed of an adhesive component 2B).
- the first adhesive layer 1A is an adhesive composition containing at least the above-mentioned components (a) to (c) and the above-mentioned (d) conductive particles (first adhesion).
- the second adhesive layer 1B may be a layer composed of the agent composition), and the second adhesive layer 1B is an adhesive composition (second adhesive) containing the above-mentioned components (a) to (c) and (e) to (g). It may be a layer composed of an agent composition).
- the type, content, and the like of each component contained in the second adhesive layer 1B may be the same as or different from that of the first adhesive layer 1A.
- the first adhesive layer 1A and the second adhesive layer 1B of the circuit connection adhesive film 1 may be in an uncured state, or may be in a partially cured state.
- the thickness of the first adhesive layer 1A may be, for example, 3 ⁇ m or more or 5 ⁇ m or more, and may be 15 ⁇ m or less or 10 ⁇ m or less.
- the thickness of the first adhesive layer 1A may be 3 to 15 ⁇ m or 5 to 10 ⁇ m.
- the thickness of the second adhesive layer 1B may be, for example, 5 ⁇ m or more or 10 ⁇ m or more, and may be 20 ⁇ m or less or 15 ⁇ m or less.
- the thickness of the second adhesive layer 1B may be 5 to 20 ⁇ m or 10 to 15 ⁇ m.
- the ratio of the thickness of the first adhesive layer 1A to the thickness of the second adhesive layer 1B is 0.1.
- the ratio of the thickness of the first adhesive layer 1A to the thickness of the second adhesive layer 1B is 0.1. It may be ⁇ 1.0 or 0.3 ⁇ 0.5.
- the circuit connection adhesive film according to the embodiment may have anisotropic conductivity. That is, the adhesive film for circuit connection may be an anisotropic conductive film.
- the adhesive film for circuit connection may be a conductive adhesive film having no anisotropic conductivity.
- connection structure Another embodiment of the present disclosure is between a first circuit member having a first electrode, a second circuit member having a second electrode, and the first circuit member and the second circuit member.
- a connection structure comprising a connection portion for electrically connecting the first electrode and the second electrode to each other, wherein the connection portion contains a cured product of the adhesive film for circuit connection. Is.
- FIG. 3 is a schematic cross-sectional view showing an embodiment of the connection structure.
- the structure 10 is the first between the first circuit member 4 and the second circuit member 5 facing each other and the first circuit member 4 and the second circuit member 5. It includes a connecting portion 6 for connecting the circuit member 4 and the second circuit member 5.
- the first circuit board 4 includes a first circuit board 41 and a first electrode 42 formed on the main surface 41a of the first circuit board 41.
- the second circuit board 5 includes a second circuit board 51 and a second electrode 52 formed on the main surface 51a of the second circuit board 51.
- the first circuit member 4 and the second circuit member 5 are not particularly limited as long as they are members on which electrodes requiring electrical connection are formed.
- the members (circuit members, etc.) on which the electrodes are formed include inorganic substrates such as semiconductors, glass, and ceramics; polyimide substrates typified by TCP, FPC, COF, etc .; electrodes on films such as polycarbonate, polyester, and polyether sulfone. A printed wiring board or the like is used, and a plurality of these may be used in combination.
- the connection portion 6 contains a cured product of the circuit connection adhesive film 1, and contains an insulating substance 7 which is a cured product of the adhesive component 2 and conductive particles 3.
- the conductive particles 3 are not only between the facing first electrode 42 and the second electrode 52, but also between the main surface 41a of the first circuit board 41 and the main surface 51a of the second circuit board 51. It may be arranged. In the structure 30, the first electrode 42 and the second electrode 52 are electrically connected via the conductive particles 3. That is, the conductive particles 3 are in contact with both the first electrode 42 and the second electrode 52.
- the facing first electrode 42 and the second electrode 52 are electrically connected via the conductive particles 3. Therefore, the connection resistance between the first electrode 42 and the second electrode 52 is sufficiently reduced. Therefore, it is possible to smooth the flow of current between the first electrode 42 and the second electrode 52, and to fully exert the functions of the first circuit member 4 and the second circuit member 5. Can be done.
- connection adhesive film is interposed between the first circuit member having the first electrode and the second circuit member having the second electrode, and the above is described.
- a method for manufacturing a connection structure comprising a step of thermocompression bonding the first circuit member and the second circuit member to electrically connect the first electrode and the second electrode to each other.
- FIG. 4 is a schematic cross-sectional view showing an embodiment of a method for manufacturing a connection structure.
- the first circuit member 4 and the circuit connection adhesive film 1 are prepared.
- the circuit connection adhesive film 1 is arranged on the main surface 41a of the first circuit member 4.
- the circuit connection adhesive film 1 is laminated on the base material (not shown)
- the circuit connection adhesive film 1 side of the base material is directed toward the first circuit member 4.
- the laminate is placed on the first circuit member 4.
- the circuit connection adhesive film 1 has the first adhesive layer 1A and the second adhesive layer 1B as shown in FIG. 2, the viewpoint of improving the number of conductive particles captured between the facing electrodes.
- the first adhesive layer side may be arranged so as to be in contact with the main surface 41a of the first circuit member 4.
- circuit connection adhesive film 1 is pressurized in the directions of arrows A and B in FIG. 4A, and the circuit connection adhesive film 1 is temporarily connected to the first circuit member 4 (FIG. 4B). reference). At this time, heating may be performed together with pressurization.
- the second electrode 52 side is directed toward the first circuit member 4 on the circuit connection adhesive film 1 arranged on the first circuit member 4. (That is, the first electrode 42 and the second electrode 52 are arranged to face each other, and the circuit connection adhesive is placed between the first circuit member 4 and the second circuit member 5.
- the second circuit member 5 is further arranged (with the film 1 interposed therebetween).
- circuit connection adhesive film 1 is thermocompression bonded in the directions of arrows A and B in FIG. 4 (c). As a result, the circuit connection adhesive film 1 is cured, and the main connection for electrically connecting the first electrode 42 and the second electrode 52 to each other is performed. As a result, the structure 10 as shown in FIG. 3 is obtained.
- the conductive particles 3 can be brought into contact with both the first electrode 42 and the second electrode 52 facing each other, and the first electrode 42 and the second electrode 52 can be brought into contact with each other.
- the connection resistance between the electrodes 52 can be sufficiently reduced.
- the adhesive component 2 is cured to become the insulating substance 7 with the distance between the first electrode 42 and the second electrode 52 sufficiently reduced.
- the first circuit member 4 and the second circuit member 5 are firmly connected via the connecting portion 6. Further, in the structure 10, a state in which the adhesive strength is sufficiently high is maintained for a long period of time. Therefore, in the structure 10, the change in the distance between the first electrode 42 and the second electrode 52 with time is sufficiently suppressed, and the long-term reliability of the electrical characteristics between the first electrode 42 and the second electrode 52 is reliable. Is excellent.
- a layer made of nickel was formed on the surface of the crosslinked polystyrene particles so that the thickness of the layer was 0.15 ⁇ m. In this way, conductive particles having an average particle diameter of 3.3 ⁇ m, a maximum particle diameter of 3.5 ⁇ m, and a specific gravity of 2.7 were obtained.
- Adhesive composition was prepared. The details of each component in Tables 1 and 2 are as follows, and the blending amount of each component in the table represents the blending amount of the non-volatile component.
- Cationic polymerizable compound B1 be-7-oxabicyclo [4,1,0] heptane (trade name: seroxide 8010, manufactured by Daicel Chemical Co., Ltd.)
- B2 4,4'-bis [(3-ethyl-3-oxetanyl) methyl] biphenyl (trade name: OXBP, manufactured by Ube Kosan Co., Ltd.)
- Thermal polymerization initiator C1 quaternary ammonium salt (trade name: K-PURE CXC-1821, manufactured by King Industries)
- E1 P-1 (fluorene type phenoxy resin)
- E2 Bisphenol A type solid epoxy resin (trade name: jER1010, manufactured by Mitsubishi Chemical Corporation)
- F1 ⁇ -glycidoxypropyltrimethoxysilane (trade name: KBM-403, manufactured by Shin-Etsu Chemical Co., Ltd.)
- the second adhesive composition was applied on the base material (PET film) to form the second adhesive layer on the base material. Further, the first adhesive composition is applied on the second adhesive layer to form the first adhesive layer, and the first adhesive layer, the second adhesive layer, and the base material are formed. Made an adhesive film for circuit connection laminated in this order. The thickness of the first adhesive layer of the adhesive films for circuit connection of Examples 1 to 13 and Comparative Examples 1 to 2 was 7 ⁇ m, and the thickness of the second adhesive layer was 11 ⁇ m.
- thermocompression bonding device manufactured by Ohashi Seisakusho Co., Ltd., a thermocompression bonding device equipped with a stage consisting of a ceramic heater and a tool (8 mm x 50 mm)
- conditions of 70 ° C. and 0.98 MPa (10 kgf / cm 2 ) The adhesive film for circuit connection was attached to the evaluation member by heating and pressurizing for 2 seconds.
- FPD / LSI inspection microscope ECLIPSE L300ND manufactured by Nikon Instec Co., Ltd.
- the interface between the evaluation member and the circuit connection adhesive film was observed, and the adhesiveness of the circuit connection adhesive film was confirmed.
- the circuit connection adhesive film attached to the evaluation member is the one immediately after the circuit connection adhesive film was made, and the one immediately after the circuit connection adhesive film was made.
- % RH the first adhesive layer was stored for 96 hours in an environment under fluorescent light so that it was in contact with air. Those in which no floating was observed at the interface between the evaluation member and the circuit connection adhesive film were marked with " ⁇ ", and those in which floating was observed were marked with "x”. The results are shown in Tables 1 and 2.
- connection structure As the first circuit member, AlNd (100 nm) / Mo (50 nm) / on the surface of a non-alkali glass substrate (OA-11, manufactured by Nippon Electric Glass Co., Ltd., outer shape: 38 mm ⁇ 28 mm, thickness: 0.3 mm). An ITO (100 nm) wiring pattern (pattern width: 19 ⁇ m, space between electrodes: 5 ⁇ m) was prepared.
- an IC chip in which bump electrodes are arranged in two rows in a staggered pattern (outer shape: 0.9 mm ⁇ 20.3 mm, thickness: 0.3 mm, bump electrode size: 70 ⁇ m ⁇ 12 ⁇ m, bump electrode Spacing space: 12 ⁇ m, bump electrode thickness: 8 ⁇ m) was prepared.
- a connection structure was produced using the adhesive films for circuit connection of Examples 1 to 13 and Comparative Examples 1 and 2.
- a first adhesive layer of the circuit connection adhesive film was placed on the first circuit member.
- a thermocompression bonding device (LD-06, manufactured by Ohashi Seisakusho Co., Ltd.) consisting of a stage consisting of a ceramic heater and a tool (8 mm x 50 mm), under the conditions of 50 ° C. and 0.98 MPa (10 kgf / cm 2 ).
- the circuit connection adhesive film was attached to the first circuit member by heating and pressurizing for 2 seconds.
- the release film on the side opposite to the first circuit member of the circuit connection adhesive film was peeled off, and the bump electrode of the first circuit member and the circuit electrode of the second circuit member were aligned.
- connection resistance at 14 points was measured by the four-terminal measurement method, and the maximum value (maximum resistance value) of the connection resistance value was evaluated.
- the high temperature and high humidity test was performed by storing the connected structure in a high temperature and high humidity tank having a temperature of 85 ° C. and a humidity of 85% RH for 250 hours.
- a multimeter (MLR21, manufactured by ETAC) was used to measure the connection resistance.
- an FPD / LSI inspection microscope (ECLIPSE L300ND manufactured by Nikon Instec Co., Ltd.) was installed from the opposite side of the adhesive surface of the first circuit member to the circuit connection adhesive film. Using, the interface between the first circuit member and the circuit connection adhesive film was observed, and the adhesiveness was evaluated. Those in which peeling did not occur at the interface between the first circuit member and the circuit connection adhesive film were marked with " ⁇ ", and those in which peeling occurred were marked with "x”. The evaluation results are shown in Tables 1 and 2.
- Adhesive film for circuit connection 1A ... First adhesive layer, 1B ... Second adhesive layer, 2,2A, 2B ... Adhesive component, 3,3A ... Conductive particles, 4 ... First circuit Member, 5 ... Second circuit member, 6 ... Connection, 7 ... Insulating material, 10 ... Structure, 41 ... First circuit board, 42 ... First electrode, 51 ... Second circuit board, 52 ... Second electrode.
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Abstract
Description
本開示の一実施形態は、(a)ラクタム環を有するアミドと、(b)カチオン重合性化合物と、(c)熱重合開始剤と、(d)導電粒子と、を含有する、回路接続用接着剤フィルムである。すなわち、本開示の一実施形態は、(a)~(c)成分を含む接着剤成分と、接着剤成分中に分散された導電粒子とを含有する、回路接続用接着剤フィルムである。
回路接続用接着剤フィルムはラクタム環を有するアミドを含有することで、回路部材同士の接続において、空気に触れた状態で保管されても回路部材に対して優れた貼り付け性を得やすくなり、さらに回路部材同士の接続後に回路接続構造体が高温高湿環境下(例えば85℃、85%RH)に長期間さらされた場合でも対向する電極間の接続信頼性を確保しやすくなる。
カチオン重合性化合物は、例えば、熱によって熱重合開始剤と反応することによって架橋する化合物である。カチオン重合性化合物は、低温速硬化(低温短時間硬化)の観点から、オキセタン化合物及び脂環式エポキシ化合物からなる群より選ばれる少なくとも一種を含んでよく、オキセタン化合物と脂環式エポキシ化合物とを含んでよい。カチオン重合性化合物は、一種を単独で用いてもよく、二種以上を組み合わせて用いてもよい。
熱重合開始剤は、加熱により酸等を発生して重合を開始する化合物であり、カチオンとアニオンとから構成される化合物であってよい。熱重合開始剤は、例えば、SbF6 -、PF6 -、PFX(CF3)6-X -(但し、Xは1~5の整数)、BF4 -、B(C6F5)4 -、RSO3 -(但し、Rは炭素数1~3のアルキル基、置換或いは無置換のアリール基)、C(SO2CF3)3 -等のアニオンを有する、スルホニウム塩、ホスホニウム塩、アンモニウム塩、ジアゾニウム塩、ヨードニウム塩、アニリニウム塩等のオニウム塩などが挙げられる。これらは、一種を単独で用いてもよく、二種以上を組み合わせて用いてもよい。
導電粒子としては、導電性を有する粒子であれば特に制限されず、金、銀、パラジウム、ニッケル、銅、はんだ等の金属で構成された金属粒子、導電性カーボンで構成された導電性カーボン粒子などであってよい。導電粒子は、非導電性のガラス、セラミック、プラスチック(ポリスチレン等)などを含む核と、上記金属又は導電性カーボンを含み、核を被覆する被覆層とを備える被覆導電粒子であってもよい。これらの中でも、導電粒子は、熱溶融性の金属で形成された金属粒子及び被覆導電粒子からなる群より選ばれる少なくとも一種を含んでよく、被覆導電粒子を含んでよい。被覆導電粒子は、加熱及び/又は加圧することにより変形させることが容易であるため、電極同士を電気的に接続する際に、電極と導電粒子との接触面積を増加させ、電極間の導電性をより向上させることができる。
回路接続用接着剤フィルムは、上記(a)~(d)成分以外にその他の成分を更に含有してもよい。その他の成分としては、例えば、(e)熱可塑性樹脂、(f)カップリング剤、(g)充填材等が挙げられる。
回路接続用接着剤フィルムは熱可塑性樹脂を含有することで、フィルム状に形成しやすくなる。
熱可塑性樹脂としては、フェノキシ樹脂、ポリエステル樹脂、ポリアミド樹脂、ポリウレタン樹脂、ポリエステルウレタン樹脂、アクリルゴム、エポキシ樹脂(25℃で固形)等が挙げられる。これらは、一種を単独で用いてもよく、二種以上を組み合わせて用いてもよい。
回路接続用接着剤フィルムはカップリング剤を含有することで、接着性をより向上させることができる。カップリング剤は、例えばシランカップリング剤であってよい。カップリング剤としては、例えば、ビニルトリメトキシシラン、ビニルトリエトキシシラン、3-グリシドキシプロピルトリメトキシシラン、3-グリシドキシプロピルメチルジエトキシシラン、3-(メタ)アクリロキシプロピルメチルジメトキシシラン、3-(メタ)アクリロキシプロピルトリメトキシシラン、3-(メタ)アクリロキシプロピルメチルジエトキシシラン、3-(メタ)アクリロキシプロピルトリエトキシシラン、N-2-(アミノエチル)-3-アミノプロピルメチルジメトキシシラン、N-フェニル-3-アミノプロピルトリメトキシシラン、3-ウレイドプロピルトリエトキシシラン、3-メルカプトプロピルトリメトキシシラン、3-イソシアネートプロピルトリエトキシシラン、及び、これらの縮合物が挙げられる。これらは、一種を単独で用いてもよく、二種以上を組み合わせて用いてもよい。
回路接続用接着剤フィルムは充填材を含有することで、接続信頼性をより向上させることができる。充填材としては、非導電性のフィラー(例えば、非導電粒子)が挙げられる。充填材は、無機フィラー及び有機フィラーのいずれであってもよい。
本開示の他の実施形態は、第一の電極を有する第一の回路部材と、第二の電極を有する第二の回路部材と、上記第一の回路部材及び上記第二の回路部材の間に配置され、上記第一の電極及び上記第二の電極を互いに電気的に接続する接続部と、を備え、上記接続部が、上記回路接続用接着剤フィルムの硬化物を含む、接続構造体である。
本開示の他の実施形態は、第一の電極を有する第一の回路部材と、第二の電極を有する第二の回路部材との間に、上記回路接続用接着剤フィルムを介在させ、上記第一の回路部材及び上記第二の回路部材を熱圧着して、上記第一の電極及び上記第二の電極を互いに電気的に接続する工程を備える、接続構造体の製造方法である。
架橋ポリスチレン粒子の表面上に、層の厚さが0.15μmとなるようにニッケルからなる層を形成した。このようにして、平均粒子径3.3μm、最大粒子径3.5μm、比重2.7の導電粒子を得た。
表1及び2に示す配合量(単位:質量部)で各成分を混合し、第一の接着剤層を形成する第一の接着剤組成物、及び第二の接着剤層を形成する第二の接着剤組成物を調製した。なお、表1及び2中の各成分の詳細は以下のとおりであり、表中の各成分の配合量は不揮発分の配合量を表す。
・カチオン重合性化合物
B1:ビ-7-オキサビシクロ[4,1,0]ヘプタン(商品名:セロキサイド8010、ダイセル化学株式会社製)
B2:4,4’-ビス[(3-エチル-3-オキセタニル)メチル]ビフェニル(商品名:OXBP、宇部興産株式会社製)
・熱重合開始剤
C1:第4級アンモニウム塩(商品名:K-PURE CXC-1821、King Industries社製)
・導電粒子
D1:上述のとおり作製した導電粒子
・熱可塑性樹脂
E1:P-1(フルオレン型フェノキシ樹脂)
E2:ビスフェノールA型固形エポキシ樹脂(商品名:jER1010、三菱化学株式会社製)
・カップリング剤
F1:γ-グリシドキシプロピルトリメトキシシラン(商品名:KBM-403、信越化学工業株式会社製)
・充填材
G1:表面処理されたシリカ粒子(シリカとビス(トリメチルシリル)アミンとの加水分解生成物)
G2:表面処理されたシリカ微粒子(トリメトキシオクチルシランとシリカの加水分解生成物、商品名:アエロジルR805、Evonik Industries AG社製、有機溶媒で不揮発分の含有量を10質量%に希釈したものを使用)
ジムロート冷却管と、塩化カルシウム管と、攪拌モーターに接続されたテフロン(登録商標)攪拌棒と、を装着した3000mLの3つ口フラスコ中で、4,4’-(9-フルオレニリデン)-ジフェノール45g(シグマアルドリッチジャパン株式会社製)及び3,3’,5,5’-テトラメチルビフェノールジグリシジルエーテル50g(商品名:YX-4000H、三菱化学株式会社製)をN-メチルピロリドン1000mLに溶解して反応液とした。この反応液に炭酸カリウム21gを加え、マントルヒーターで110℃に加熱しながら3時間攪拌した。攪拌後の反応液を1000mLのメタノールが入ったビーカーに滴下し、吸引ろ過することによって生成した沈殿物をろ取した。ろ取した沈殿物をさらに300mLのメタノールで3回洗浄して、フェノキシ樹脂P-1を75g得た。得られたフェノキシ樹脂P-1の分子量を高速液体クロマトグラフ(東ソー株式会社製、GP8020、カラム:日立化成工業株式会社製Gelpack GL-A150S及びGLA160S、溶離液:テトラヒドロフラン、流速:1.0mL/分)を用いて測定したところ、ポリスチレン換算でMn=15769、Mw=38045、Mw/Mn=2.413であった。
無アルカリガラス基板(OA-11、日本電気硝子株式会社製、38mm×28mm、厚さ:0.3mm)の表面に、AlNd(100nm)/Mo(50nm)/ITO(100nm)の配線パターン(パターン幅:19μm、電極間スペース:5μm)を形成して、評価部材を作製した。実施例1~13及び比較例1~2の各回路接続用接着剤フィルム(1.5mm×25mm)を第一の接着剤層と評価部材とが接するようにして、評価部材の上に設置した。熱圧着装置(BS-17U、株式会社大橋製作所製、セラミックヒータからなるステージとツール(8mm×50mm)を備える熱圧着装置)を用いて、70℃、0.98MPa(10kgf/cm2)の条件で2秒間加熱及び加圧して、回路接続用接着剤フィルムを評価部材に貼り付けた。回路接続用接着剤フィルムから基材を剥離した状態で、評価部材の回路接続用接着剤フィルムが貼り付けられていない面側からFPD/LSI検査顕微鏡(株式会社ニコンインステック製、ECLIPSE L300ND)を用いて評価部材と回路接続用接着剤フィルムとの界面を観察し、回路接続用接着剤フィルムの貼り付け性を確認した。評価部材に貼り付けた回路接続用接着剤フィルムは、回路接続用接着剤フィルムを作製した直後のものと、回路接続用接着剤フィルムを作製後、基材を剥離して、25℃、湿度60%RH、蛍光灯下の環境で第一の接着剤層が空気に触れるようにして96時間保管したものとで行った。評価部材と回路接続用接着剤フィルムとの界面に浮きが観察されなかったものを「○」、浮きが観察されたものを「×」とした。
結果を表1及び2に示す。
第1の回路部材として、無アルカリガラス基板(OA-11、日本電気硝子株式会社製、外形:38mm×28mm、厚さ:0.3mm)の表面に、AlNd(100nm)/Mo(50nm)/ITO(100nm)の配線パターン(パターン幅:19μm、電極間スペース:5μm)を形成したものを準備した。第2の回路部材として、バンプ電極を2列で千鳥状に配列したICチップ(外形:0.9mm×20.3mm、厚さ:0.3mm、バンプ電極の大きさ:70μm×12μm、バンプ電極間スペース:12μm、バンプ電極厚さ:8μm)を準備した。
接続構造体の高温高湿試験後、四端子測定法にて、14箇所の接続抵抗を測定し、接続抵抗値の最大値(最大抵抗値)を評価した。高温高湿試験は、温度85℃湿度85%RHの高温高湿槽にて接続構造体を250時間保管することにより行った。接続抵抗の測定にはマルチメータ(MLR21、ETAC社製)を用いた。また、接続構造体の高温高湿試験後、第1の回路部材の回路接続用接着剤フィルムとの接着面の反対側から、FPD/LSI検査顕微鏡(株式会社ニコンインステック製、ECLIPSE L300ND)を用いて、第1の回路部材と回路接続用接着剤フィルムとの界面を観察し、接着性を評価した。第1の回路部材と回路接続用接着剤フィルムとの界面で剥離が発生しなかったものを「○」、剥離が発生したものを「×」した。評価結果を表1及び2に示す。
Claims (8)
- ラクタム環を有するアミドと、カチオン重合性化合物と、熱重合開始剤と、導電粒子と、を含有する、回路接続用接着剤フィルム。
- 前記アミドのラクタム環を構成する炭素数が3~12である、請求項1に記載の回路接続用接着剤フィルム。
- 前記アミドがε-カプロラクタムを含む、請求項1又は2に記載の回路接続用接着剤フィルム。
- 前記カチオン重合性化合物が、オキセタン化合物及び脂環式エポキシ化合物からなる群より選ばれる少なくとも一種を含む、請求項1~3のいずれか一項に記載の回路接続用接着剤フィルム。
- 前記アミドの質量基準の含有量をAWとし、前記熱重合開始剤の質量基準の含有量をBWとしたときに、AW/BWが0.001~0.2である、請求項1~4のいずれか一項に記載の回路接続用接着剤フィルム。
- 第一の接着剤層と、前記第一の接着剤層上に積層された第二の接着剤層と、を備え、
前記第一の接着剤層が、前記アミドと、前記カチオン重合性化合物と、前記熱重合開始剤と、前記導電粒子と、を含有する、請求項1~5のいずれか一項に記載の回路接続用接着剤フィルム。 - 第一の電極を有する第一の回路部材と、
第二の電極を有する第二の回路部材と、
前記第一の回路部材及び前記第二の回路部材の間に配置され、前記第一の電極及び前記第二の電極を互いに電気的に接続する接続部と、
を備え、
前記接続部が、請求項1~6のいずれか一項に記載の回路接続用接着剤フィルムの硬化物を含む、接続構造体。 - 第一の電極を有する第一の回路部材と、第二の電極を有する第二の回路部材との間に、請求項1~6のいずれか一項に記載の回路接続用接着剤フィルムを介在させ、前記第一の回路部材及び前記第二の回路部材を熱圧着して、前記第一の電極及び前記第二の電極を互いに電気的に接続する工程を備える、接続構造体の製造方法。
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JPH01251787A (ja) | 1988-03-31 | 1989-10-06 | Toshiba Corp | 電子部品の接続装置 |
JP3907217B2 (ja) | 1993-07-29 | 2007-04-18 | 日立化成工業株式会社 | 回路接続材料とその接続材料を用いた回路の接続方法 |
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JP2004164874A (ja) * | 2002-11-08 | 2004-06-10 | Osugi Kk | 異方性導電接着剤用導電微粒子 |
JP2011082025A (ja) * | 2009-10-07 | 2011-04-21 | Bando Chemical Industries Ltd | 導電性ペースト |
WO2011055784A1 (ja) * | 2009-11-05 | 2011-05-12 | 日立化成工業株式会社 | 熱重合系開始剤システム及び接着剤組成物 |
WO2011114751A1 (ja) * | 2010-03-19 | 2011-09-22 | 古河電気工業株式会社 | 導電接続部材、及び導電接続部材の作製方法 |
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WO2019039210A1 (ja) * | 2017-08-23 | 2019-02-28 | デクセリアルズ株式会社 | 異方性導電フィルム |
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