JP2007291167A - Composition for forming silica-based coating film, method for producing silica-based coating film and electronic component - Google Patents
Composition for forming silica-based coating film, method for producing silica-based coating film and electronic component Download PDFInfo
- Publication number
- JP2007291167A JP2007291167A JP2006117780A JP2006117780A JP2007291167A JP 2007291167 A JP2007291167 A JP 2007291167A JP 2006117780 A JP2006117780 A JP 2006117780A JP 2006117780 A JP2006117780 A JP 2006117780A JP 2007291167 A JP2007291167 A JP 2007291167A
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- Prior art keywords
- silica
- film
- bis
- coating film
- composition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 239000000377 silicon dioxide Substances 0.000 title claims abstract description 48
- 239000000203 mixture Substances 0.000 title claims abstract description 46
- 239000011248 coating agent Substances 0.000 title claims abstract description 36
- 238000000576 coating method Methods 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 239000002904 solvent Substances 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 150000003839 salts Chemical class 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 5
- 238000002156 mixing Methods 0.000 claims abstract description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 125000004432 carbon atom Chemical group C* 0.000 claims description 5
- 125000000962 organic group Chemical group 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229910052796 boron Inorganic materials 0.000 claims description 2
- 229910052732 germanium Inorganic materials 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 229910052698 phosphorus Inorganic materials 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 20
- 150000001875 compounds Chemical class 0.000 abstract description 14
- 239000011347 resin Substances 0.000 abstract description 6
- 229920005989 resin Polymers 0.000 abstract description 6
- 238000009833 condensation Methods 0.000 abstract description 5
- 230000005494 condensation Effects 0.000 abstract description 5
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 abstract description 4
- 230000003301 hydrolyzing effect Effects 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 79
- -1 bis (tri-tert-butoxysilyl) ethane Bis (triphenoxysilyl) ethane Chemical compound 0.000 description 64
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 30
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 23
- 239000000243 solution Substances 0.000 description 19
- 239000007864 aqueous solution Substances 0.000 description 16
- KUCWUAFNGCMZDB-UHFFFAOYSA-N 2-amino-3-nitrophenol Chemical compound NC1=C(O)C=CC=C1[N+]([O-])=O KUCWUAFNGCMZDB-UHFFFAOYSA-N 0.000 description 13
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 12
- 229940022663 acetate Drugs 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 12
- 229910017604 nitric acid Inorganic materials 0.000 description 12
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 11
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 10
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 10
- 238000003756 stirring Methods 0.000 description 10
- 235000014113 dietary fatty acids Nutrition 0.000 description 9
- 229930195729 fatty acid Natural products 0.000 description 9
- 239000000194 fatty acid Substances 0.000 description 9
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 8
- 125000003545 alkoxy group Chemical group 0.000 description 8
- 239000004065 semiconductor Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 229920000642 polymer Polymers 0.000 description 7
- NIINUVYELHEORX-UHFFFAOYSA-N triethoxy(triethoxysilylmethyl)silane Chemical compound CCO[Si](OCC)(OCC)C[Si](OCC)(OCC)OCC NIINUVYELHEORX-UHFFFAOYSA-N 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 6
- 239000011810 insulating material Substances 0.000 description 6
- 238000004528 spin coating Methods 0.000 description 5
- 239000003039 volatile agent Substances 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 4
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 4
- FERIUCNNQQJTOY-UHFFFAOYSA-N Butyric acid Chemical compound CCCC(O)=O FERIUCNNQQJTOY-UHFFFAOYSA-N 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- WWZKQHOCKIZLMA-UHFFFAOYSA-N Caprylic acid Natural products CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 150000003863 ammonium salts Chemical class 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- OFBQJSOFQDEBGM-UHFFFAOYSA-N n-pentane Natural products CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 3
- PGMYKACGEOXYJE-UHFFFAOYSA-N pentyl acetate Chemical compound CCCCCOC(C)=O PGMYKACGEOXYJE-UHFFFAOYSA-N 0.000 description 3
- JBYXACURRYATNJ-UHFFFAOYSA-N trimethoxy(1-trimethoxysilylhexyl)silane Chemical compound CCCCCC([Si](OC)(OC)OC)[Si](OC)(OC)OC JBYXACURRYATNJ-UHFFFAOYSA-N 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- PUPZLCDOIYMWBV-UHFFFAOYSA-N (+/-)-1,3-Butanediol Chemical compound CC(O)CCO PUPZLCDOIYMWBV-UHFFFAOYSA-N 0.000 description 2
- SUOOZFRDMVSBLL-KSBRXOFISA-L (z)-but-2-enedioate;tetramethylazanium Chemical compound C[N+](C)(C)C.C[N+](C)(C)C.[O-]C(=O)\C=C/C([O-])=O SUOOZFRDMVSBLL-KSBRXOFISA-L 0.000 description 2
- RRQYJINTUHWNHW-UHFFFAOYSA-N 1-ethoxy-2-(2-ethoxyethoxy)ethane Chemical compound CCOCCOCCOCC RRQYJINTUHWNHW-UHFFFAOYSA-N 0.000 description 2
- OJVAMHKKJGICOG-UHFFFAOYSA-N 2,5-hexanedione Chemical compound CC(=O)CCC(C)=O OJVAMHKKJGICOG-UHFFFAOYSA-N 0.000 description 2
- QQZOPKMRPOGIEB-UHFFFAOYSA-N 2-Oxohexane Chemical compound CCCCC(C)=O QQZOPKMRPOGIEB-UHFFFAOYSA-N 0.000 description 2
- YIWUKEYIRIRTPP-UHFFFAOYSA-N 2-ethylhexan-1-ol Chemical compound CCCCC(CC)CO YIWUKEYIRIRTPP-UHFFFAOYSA-N 0.000 description 2
- QPRQEDXDYOZYLA-UHFFFAOYSA-N 2-methylbutan-1-ol Chemical compound CCC(C)CO QPRQEDXDYOZYLA-UHFFFAOYSA-N 0.000 description 2
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 2
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229920002732 Polyanhydride Polymers 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 125000003668 acetyloxy group Chemical group [H]C([H])([H])C(=O)O[*] 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 150000001342 alkaline earth metals Chemical class 0.000 description 2
- 125000005907 alkyl ester group Chemical group 0.000 description 2
- 150000005215 alkyl ethers Chemical class 0.000 description 2
- 239000012298 atmosphere Substances 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- QUKGYYKBILRGFE-UHFFFAOYSA-N benzyl acetate Chemical compound CC(=O)OCC1=CC=CC=C1 QUKGYYKBILRGFE-UHFFFAOYSA-N 0.000 description 2
- BTANRVKWQNVYAZ-UHFFFAOYSA-N butan-2-ol Chemical compound CCC(C)O BTANRVKWQNVYAZ-UHFFFAOYSA-N 0.000 description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 2
- OGCNPMTZBJEZKT-UHFFFAOYSA-N butyl(triphenoxy)silane Chemical compound C=1C=CC=CC=1O[Si](OC=1C=CC=CC=1)(CCCC)OC1=CC=CC=C1 OGCNPMTZBJEZKT-UHFFFAOYSA-N 0.000 description 2
- KBPLFHHGFOOTCA-UHFFFAOYSA-N caprylic alcohol Natural products CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006482 condensation reaction Methods 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 2
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 description 2
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Chemical compound CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 description 2
- 229940019778 diethylene glycol diethyl ether Drugs 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
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- 238000001035 drying Methods 0.000 description 2
- LZCLXQDLBQLTDK-UHFFFAOYSA-N ethyl 2-hydroxypropanoate Chemical compound CCOC(=O)C(C)O LZCLXQDLBQLTDK-UHFFFAOYSA-N 0.000 description 2
- XLLIQLLCWZCATF-UHFFFAOYSA-N ethylene glycol monomethyl ether acetate Natural products COCCOC(C)=O XLLIQLLCWZCATF-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- GAEKPEKOJKCEMS-UHFFFAOYSA-N gamma-valerolactone Chemical compound CC1CCC(=O)O1 GAEKPEKOJKCEMS-UHFFFAOYSA-N 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 125000005843 halogen group Chemical group 0.000 description 2
- CATSNJVOTSVZJV-UHFFFAOYSA-N heptan-2-one Chemical compound CCCCCC(C)=O CATSNJVOTSVZJV-UHFFFAOYSA-N 0.000 description 2
- ZSIAUFGUXNUGDI-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO ZSIAUFGUXNUGDI-UHFFFAOYSA-N 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- GJRQTCIYDGXPES-UHFFFAOYSA-N isobutyl acetate Chemical compound CC(C)COC(C)=O GJRQTCIYDGXPES-UHFFFAOYSA-N 0.000 description 2
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 2
- JMMWKPVZQRWMSS-UHFFFAOYSA-N isopropyl acetate Chemical compound CC(C)OC(C)=O JMMWKPVZQRWMSS-UHFFFAOYSA-N 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- ZWRUINPWMLAQRD-UHFFFAOYSA-N nonan-1-ol Chemical compound CCCCCCCCCO ZWRUINPWMLAQRD-UHFFFAOYSA-N 0.000 description 2
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 description 2
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- XNLICIUVMPYHGG-UHFFFAOYSA-N pentan-2-one Chemical compound CCCC(C)=O XNLICIUVMPYHGG-UHFFFAOYSA-N 0.000 description 2
- FDPIMTJIUBPUKL-UHFFFAOYSA-N pentan-3-one Chemical compound CCC(=O)CC FDPIMTJIUBPUKL-UHFFFAOYSA-N 0.000 description 2
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- 229920000233 poly(alkylene oxides) Polymers 0.000 description 2
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- 239000004417 polycarbonate Substances 0.000 description 2
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- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- XNWSMNKRGNKRKP-UHFFFAOYSA-M propanoate;tetramethylazanium Chemical compound CCC([O-])=O.C[N+](C)(C)C XNWSMNKRGNKRKP-UHFFFAOYSA-M 0.000 description 2
- YKYONYBAUNKHLG-UHFFFAOYSA-N propyl acetate Chemical compound CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
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- FPGGTKZVZWFYPV-UHFFFAOYSA-M tetrabutylammonium fluoride Chemical compound [F-].CCCC[N+](CCCC)(CCCC)CCCC FPGGTKZVZWFYPV-UHFFFAOYSA-M 0.000 description 2
- MRYQZMHVZZSQRT-UHFFFAOYSA-M tetramethylazanium;acetate Chemical compound CC([O-])=O.C[N+](C)(C)C MRYQZMHVZZSQRT-UHFFFAOYSA-M 0.000 description 2
- KJFVITRRNTVAPC-UHFFFAOYSA-L tetramethylazanium;sulfate Chemical compound C[N+](C)(C)C.C[N+](C)(C)C.[O-]S([O-])(=O)=O KJFVITRRNTVAPC-UHFFFAOYSA-L 0.000 description 2
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 2
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- LZDKZFUFMNSQCJ-UHFFFAOYSA-N 1,2-diethoxyethane Chemical compound CCOCCOCC LZDKZFUFMNSQCJ-UHFFFAOYSA-N 0.000 description 1
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- MQGIBEAIDUOVOH-UHFFFAOYSA-N 1-[2-[2-[2-(2-butoxyethoxy)ethoxy]ethoxy]ethoxy]butane Chemical compound CCCCOCCOCCOCCOCCOCCCC MQGIBEAIDUOVOH-UHFFFAOYSA-N 0.000 description 1
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- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 1
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- BPIUIOXAFBGMNB-UHFFFAOYSA-N 1-hexoxyhexane Chemical compound CCCCCCOCCCCCC BPIUIOXAFBGMNB-UHFFFAOYSA-N 0.000 description 1
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- QJJZQRNPNLTSNS-UHFFFAOYSA-N tris[(2-methylpropan-2-yl)oxy]-[tris[(2-methylpropan-2-yl)oxy]silylmethyl]silane Chemical compound CC(C)(C)O[Si](OC(C)(C)C)(OC(C)(C)C)C[Si](OC(C)(C)C)(OC(C)(C)C)OC(C)(C)C QJJZQRNPNLTSNS-UHFFFAOYSA-N 0.000 description 1
- KGOOITCIBGXHJO-UHFFFAOYSA-N tris[(2-methylpropan-2-yl)oxy]-phenylsilane Chemical compound CC(C)(C)O[Si](OC(C)(C)C)(OC(C)(C)C)C1=CC=CC=C1 KGOOITCIBGXHJO-UHFFFAOYSA-N 0.000 description 1
- MJIHPVLPZKWFBL-UHFFFAOYSA-N tris[(2-methylpropan-2-yl)oxy]-propan-2-ylsilane Chemical compound CC(C)(C)O[Si](C(C)C)(OC(C)(C)C)OC(C)(C)C MJIHPVLPZKWFBL-UHFFFAOYSA-N 0.000 description 1
- DIZPPYBTFPZSGK-UHFFFAOYSA-N tris[(2-methylpropan-2-yl)oxy]-propylsilane Chemical compound CCC[Si](OC(C)(C)C)(OC(C)(C)C)OC(C)(C)C DIZPPYBTFPZSGK-UHFFFAOYSA-N 0.000 description 1
- XMUJIPOFTAHSOK-UHFFFAOYSA-N undecan-2-ol Chemical compound CCCCCCCCCC(C)O XMUJIPOFTAHSOK-UHFFFAOYSA-N 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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Abstract
Description
本発明は、シリカ系被膜形成用組成物、シリカ系被膜の製造方法及び電子部品に関する。 The present invention relates to a composition for forming a silica-based film, a method for producing a silica-based film, and an electronic component.
LSIの高集積化による配線の微細化にともない、配線間容量の増大による信号遅延時間の増大が問題となっており、電子部品の絶縁材料は、耐熱性、機械特性等の他、低比誘電率と熱処理工程の短縮が求められている。 Along with miniaturization of wiring due to high integration of LSI, there is a problem of increase in signal delay time due to increase in inter-wiring capacitance. In addition to heat resistance, mechanical properties, etc., insulating materials for electronic components are low dielectric constants. The rate and shortening of the heat treatment process are required.
一般に、配線の信号の伝搬速度(v)と、配線材料が接する絶縁材料の比誘電率(ε)とには、v=k/√ε(kは定数)で示される関係があり、信号の伝搬速度を高速化するためには使用する周波数領域を高くし、またそのときの絶縁材料の比誘電率を低くする必要がある。絶縁材料の比誘電率を低くするためには、絶縁材料中に空隙を導入することが有効な手法となっている。 In general, the signal propagation speed (v) of the wiring and the relative dielectric constant (ε) of the insulating material in contact with the wiring material have a relationship represented by v = k / √ε (k is a constant), In order to increase the propagation speed, it is necessary to increase the frequency region to be used and to lower the relative dielectric constant of the insulating material at that time. In order to reduce the relative dielectric constant of the insulating material, it is an effective technique to introduce voids in the insulating material.
絶縁材料中に空隙を導入する方法としては、特許文献1、2等で提案されているように、金属アルコキシシランの加水分解縮重合物と加熱することにより揮発又は分解するポリマーを含有する組成物から被膜を形成し、加熱することにより空孔を形成することで低誘電性に優れた被膜材料を形成することが提案されている。 As a method for introducing voids in an insulating material, as proposed in Patent Documents 1 and 2, etc., a composition containing a hydrolytic condensation polymer of a metal alkoxysilane and a polymer that volatilizes or decomposes by heating. It has been proposed to form a coating material excellent in low dielectric properties by forming a film from the above and forming pores by heating.
しかしながら、これらの方法では、低誘電率化が進行するにつれ、膜強度の低下を伴うためプロセス適応性に大きな問題点がある。
本発明は、かかる事情に鑑みてなされたものであり、プロセス適応性に優れるシリカ系絶縁膜の形成、すなわちシリカ系絶縁膜の機械強度を向上させるシリカ系被膜形成用組成物、シリカ系被膜の製造方法及び電子部品を提供することを目的とするものである。 The present invention has been made in view of such circumstances, and the formation of a silica-based insulating film excellent in process adaptability, that is, a composition for forming a silica-based film that improves the mechanical strength of the silica-based insulating film, An object of the present invention is to provide a manufacturing method and an electronic component.
本発明は、 (a)成分下記一般式(1) In the present invention, component (a) is represented by the following general formula (1):
(b)成分下記一般式(2)
(B) Component The following general formula (2)
(c)成分:前記(a)成分を溶解可能な溶媒及び
(d)成分:オニウム塩
を含有してなるシリカ系被膜形成用組成物であって(a)成分の配合割合が(b)成分1モルに対し0.01モル〜0.6モルであるシリカ系被膜形成用組成物に関する。
(C) component: a solvent capable of dissolving the component (a) and (d) component: a composition for forming a silica-based film containing an onium salt, wherein the blending ratio of the component (a) is the component (b) It is related with the composition for silica type film formation which is 0.01 mol-0.6 mol with respect to 1 mol.
また、本発明は、前記のシリカ系被膜形成用組成物を基体上に塗布し、塗布された被膜を加熱して硬化膜を形成することを特徴とするシリカ系被膜の製造方法に関する。
さらに、本発明は、前記のシリカ系被膜を有する電子部品に関する。
The present invention also relates to a method for producing a silica-based coating, comprising applying the above-described composition for forming a silica-based coating on a substrate and heating the applied coating to form a cured film.
Furthermore, this invention relates to the electronic component which has the said silica-type film.
本発明によれば、シリカ系皮膜の機械強度を向上することができる。
また、本発明による電子部品は、かかるシリカ系被膜を有するので、デバイス全体の電気的信頼性を向上させることができ、製品生産の歩留まり及びプロセス裕度の向上を図ることが可能となる。
さらに、シリカ系被膜の優れた特性により、高密度かつ高品位で信頼性に優れた電子部品を提供できる。
According to the present invention, the mechanical strength of the silica-based film can be improved.
Moreover, since the electronic component according to the present invention has such a silica-based film, it is possible to improve the electrical reliability of the entire device, and to improve the yield of product production and the process margin.
Furthermore, due to the excellent characteristics of the silica-based coating, it is possible to provide an electronic component having high density, high quality and excellent reliability.
加水分解性基Xとしては、アルコキシ基、ハロゲン基、アセトキシ基、イソシアネート基、ヒドロキシル基等が挙げられる。被膜形成用組成物の液状安定性、被膜塗布特性等の観点からアルコキシ基が好ましい。 Examples of the hydrolyzable group X include an alkoxy group, a halogen group, an acetoxy group, an isocyanate group, and a hydroxyl group. Alkoxy groups are preferred from the viewpoints of liquid stability of the film-forming composition, film coating properties, and the like.
加水分解性基Xがアルコキシ基である(a)成分としては、例えば、ビス(トリメトキシシリル)メタン、ビス(トリエトキシシリル)メタン、ビス(トリ−n−プロポキシシリル)メタン、ビス(トリ−iso−プロポキシシリル)メタン、ビス(トリ−n−ブトキシシリル)メタン、ビス(トリ−sec−ブトキシシリル)メタン、ビス(トリ−tert−ブトキシシリル)メタン、ビス(トリフェノキシシリル)メタン、ビス(トリメトキシシリル)エタン、ビス(トリエトキシシリル)エタン、ビス(トリ−n−プロポキシシリル)エタン、ビス(トリ−iso−プロポキシシリル)エタン、ビス(トリ−n−ブトキシシリル)エタン、ビス(トリ−sec−ブトキシシリル)エタン、ビス(トリ−tert−ブトキシシリル)エタン、ビス(トリフェノキシシリル)エタン、ビス(トリメトキシシリル)プロパン、ビス(トリエトキシシリル)プロパン、ビス(トリ−n−プロポキシシリル)プロパン、ビス(トリ−iso−プロポキシシリル)プロパン、ビス(トリ−n−ブトキシシリル)プロパン、ビス(トリ−sec−ブトキシシリル)プロパン、ビス(トリ−tert−ブトキシシリル)プロパン、ビス(トリフェノキシシリル)プロパン、ビス(トリメトキシシリル)ブタン、ビス(トリエトキシシリル)ブタン、ビス(トリ−n−プロポキシシリル)ブタン、ビス(トリ−iso−プロポキシシリル)ブタン、ビス(トリ−n−ブトキシシリル)ブタン、ビス(トリ−sec−ブトキシシリル)ブタン、ビス(トリ−tert−ブトキシシリル)ブタン、ビス(トリフェノキシシリル)ブタン、ビス(トリメトキシシリル)ペンタン、ビス(トリエトキシシリル)ペンタン、ビス(トリ−n−プロポキシシリル)ペンタン、ビス(トリ−iso−プロポキシシリル)ペンタン、ビス(トリ−n−ブトキシシリル)ペンタン、ビス(トリ−sec−ブトキシシリル)ペンタン、ビス(トリ−tert−ブトキシシリル)ペンタン、ビス(トリフェノキシシリル)ペンタン、ビス(トリメトキシシリル)ヘキサン、ビス(トリエトキシシリル)ヘキサン、ビス(トリ−n−プロポキシシリル)ヘキサン、ビス(トリ−iso−プロポキシシリル)ヘキサン、ビス(トリ−n−ブトキシシリル)ヘキサン、ビス(トリ−sec−ブトキシシリル)ヘキサン、ビス(トリ−tert−ブトキシシリル)ヘキサン、ビス(トリフェノキシシリル)ヘキサン、ビス(トリメトキシシリル)フェニル、ビス(トリエトキシシリル)フェニル、ビス(トリ−n−プロポキシシリル)フェニル、ビス(トリ−iso−プロポキシシリル)フェニル、ビス(トリ−n−ブトキシシリル)フェニル、ビス(トリ−sec−ブトキシシリル)フェニル、ビス(トリ−tert−ブトキシシリル)フェニル、ビス(トリフェノキシシリル)フェニル等が挙げられる。 Examples of the component (a) in which the hydrolyzable group X is an alkoxy group include bis (trimethoxysilyl) methane, bis (triethoxysilyl) methane, bis (tri-n-propoxysilyl) methane, and bis (tri- iso-propoxysilyl) methane, bis (tri-n-butoxysilyl) methane, bis (tri-sec-butoxysilyl) methane, bis (tri-tert-butoxysilyl) methane, bis (triphenoxysilyl) methane, bis ( Trimethoxysilyl) ethane, bis (triethoxysilyl) ethane, bis (tri-n-propoxysilyl) ethane, bis (tri-iso-propoxysilyl) ethane, bis (tri-n-butoxysilyl) ethane, bis (tri -Sec-butoxysilyl) ethane, bis (tri-tert-butoxysilyl) ethane Bis (triphenoxysilyl) ethane, bis (trimethoxysilyl) propane, bis (triethoxysilyl) propane, bis (tri-n-propoxysilyl) propane, bis (tri-iso-propoxysilyl) propane, bis (tri -N-butoxysilyl) propane, bis (tri-sec-butoxysilyl) propane, bis (tri-tert-butoxysilyl) propane, bis (triphenoxysilyl) propane, bis (trimethoxysilyl) butane, bis (triethoxy Silyl) butane, bis (tri-n-propoxysilyl) butane, bis (tri-iso-propoxysilyl) butane, bis (tri-n-butoxysilyl) butane, bis (tri-sec-butoxysilyl) butane, bis ( Tri-tert-butoxysilyl) butane, bi (Triphenoxysilyl) butane, bis (trimethoxysilyl) pentane, bis (triethoxysilyl) pentane, bis (tri-n-propoxysilyl) pentane, bis (tri-iso-propoxysilyl) pentane, bis (tri-n -Butoxysilyl) pentane, bis (tri-sec-butoxysilyl) pentane, bis (tri-tert-butoxysilyl) pentane, bis (triphenoxysilyl) pentane, bis (trimethoxysilyl) hexane, bis (triethoxysilyl) Hexane, bis (tri-n-propoxysilyl) hexane, bis (tri-iso-propoxysilyl) hexane, bis (tri-n-butoxysilyl) hexane, bis (tri-sec-butoxysilyl) hexane, bis (tri- tert-butoxysilyl) hexa Bis (triphenoxysilyl) hexane, bis (trimethoxysilyl) phenyl, bis (triethoxysilyl) phenyl, bis (tri-n-propoxysilyl) phenyl, bis (tri-iso-propoxysilyl) phenyl, bis ( Examples include tri-n-butoxysilyl) phenyl, bis (tri-sec-butoxysilyl) phenyl, bis (tri-tert-butoxysilyl) phenyl, bis (triphenoxysilyl) phenyl, and the like.
加水分解性基Xがアルコキシ基である(b)成分としては、例えば、テトラメトキシシラン、テトラエトキシシラン、テトラ−n−プロポキシシラン、テトラ−iso−プロポキシシラン、テトラ−n−ブトキシシラン、テトラ−sec−ブトキシシラン、テトラ−tert−ブトキシシラン、テトラフェノキシシラン等のテトラアルコキシシラン、トリメトキシシラン、トリエトキシシラン、トリプロポキシシラン、フルオロトリメトキシシラン、フルオロトリエトキシシラン、メチルトリメトキシシラン、メチルトリエトキシシラン、メチルトリ−n−プロポキシシラン、メチルトリ−iso−プロポキシシラン、メチルトリ−n−ブトキシシラン、メチルトリ−iso−ブトキシシラン、メチルトリ−tert−ブトキシシラン、メチルトリフェノキシシラン、エチルトリメトキシシラン、エチルトリエトキシシラン、エチルトリ−n−プロポキシシラン、エチルトリ−iso−プロポキシシラン、エチルトリ−n−ブトキシシラン、エチルトリ−iso−ブトキシシラン、エチルトリ−tert−ブトキシシラン、エチルトリフェノキシシラン、n−プロピルトリメトキシシラン、n−プロピルトリエトキシシラン、n−プロピルトリ−n−プロポキシシラン、n−プロピルトリ−iso−プロポキシシラン、n−プロピルトリ−n−ブトキシシラン、n−プロピルトリ−iso−ブトキシシラン、n−プロピルトリ−tert−ブトキシシラン、n−プロピルトリフェノキシシラン、iso−プロピルトリメトキシシラン、iso−プロピルトリエトキシシラン、iso−プロピルトリ−n−プロポキシシラン、iso−プロピルトリ−iso−プロポキシシラン、iso−プロピルトリ−n−ブトキシシラン、iso−プロピルトリ−iso−ブトキシシラン、iso−プロピルトリ−tert−ブトキシシラン、iso−プロピルトリフェノキシシラン、n−ブチルトリメトキシシラン、n−ブチルトリエトキシシラン、n−ブチルトリ−n−プロポキシシラン、n−ブチルトリ−iso−プロポキシシラン、n−ブチルトリ−n−ブトキシシラン、n−ブチルトリ−iso−ブトキシシラン、n−ブチルトリ−tert−ブトキシシラン、n−ブチルトリフェノキシシラン、sec−ブチルトリメトキシシラン、sec−ブチルトリエトキシシラン、sec−ブチルトリ−n−プロポキシシラン、sec−ブチルトリ−iso−プロポキシシラン、sec−ブチルトリ−n−ブトキシシラン、sec−ブチルトリ−iso−ブトキシシラン、sec−ブチルトリ−tert−ブトキシシラン、sec−ブチルトリフェノキシシラン、t−ブチルトリメトキシシラン、t−ブチルトリエトキシシラン、t−ブチルトリ−n−プロポキシシラン、t−ブチルトリ−iso−プロポキシシラン、t−ブチルトリ−n−ブトキシシラン、t−ブチルトリ−iso−ブトキシシラン、t−ブチルトリ−tert−ブトキシシラン、t−ブチルトリフェノキシシラン、フェニルトリメトキシシラン、フェニルトリエトキシシラン、フェニルトリ−n−プロポキシシラン、フェニルトリ−iso−プロポキシシラン、フェニルトリ−n−ブトキシシラン、フェニルトリ−iso−ブトキシシラン、フェニルトリ−tert−ブトキシシラン、フェニルトリフェノキシシラン、トリフルオロメチルトリメトキシシラン、ペンタフルオロエチルトリメトキシシラン、3,3,3−トリフルオロプロピルトリメトキシシラン、3,3,3−トリフルオロプロピルトリエトキシシラン等のトリアルコキシシラン、ジメチルジメトキシシラン、ジメチルジエトキシシラン、ジメチルジ−n−プロポキシシラン、ジメチルジ−iso−プロポキシシラン、ジメチルジ−n−ブトキシシラン、ジメチルジ−sec−ブトキシシラン、ジメチルジ−tert−ブトキシシラン、ジメチルジフェノキシシラン、ジエチルジメトキシシラン、ジエチルジエトキシシラン、ジエチルジ−n−プロポキシシラン、ジエチルジ−iso−プロポキシシラン、ジエチルジ−n−ブトキシシラン、ジエチルジ−sec−ブトキシシラン、ジエチルジ−tert−ブトキシシラン、ジエチルジフェノキシシラン、ジ−n−プロピルジメトキシシラン、ジ−n−プロピルジエトキシシラン、ジ−n−プロピルジ−n−プロポキシシラン、ジ−n−プロピルジ−iso−プロポキシシラン、ジ−n−プロピルジ−n−ブトキシシラン、ジ−n−プロピルジ−sec−ブトキシシラン、ジ−n−プロピルジ−tert−ブトキシシラン、ジ−n−プロピルジフェノキシシラン、ジ−iso−プロピルジメトキシシラン、ジ−iso−プロピルジエトキシシラン、ジ−iso−プロピルジ−n−プロポキシシラン、ジ−iso−プロピルジ−iso−プロポキシシラン、ジ−iso−プロピルジ−n−ブトキシシラン、ジ−iso−プロピルジ−sec−ブトキシシラン、ジ−iso−プロピルジ−tert−ブトキシシラン、ジ−iso−プロピルジフェノキシシラン、ジ−n−ブチルジメトキシシラン、ジ−n−ブチルジエトキシシラン、ジ−n−ブチルジ−n−プロポキシシラン、ジ−n−ブチルジ−iso−プロポキシシラン、ジ−n−ブチルジ−n−ブトキシシラン、ジ−n−ブチルジ−sec−ブトキシシラン、ジ−n−ブチルジ−tert−ブトキシシラン、ジ−n−ブチルジフェノキシシラン、ジ−sec−ブチルジメトキシシラン、ジ−sec−ブチルジエトキシシラン、ジ−sec−ブチルジ−n−プロポキシシラン、ジ−sec−ブチルジ−iso−プロポキシシラン、ジ−sec−ブチルジ−n−ブトキシシラン、ジ−sec−ブチルジ−sec−ブトキシシラン、ジ−sec−ブチルジ−tert−ブトキシシラン、ジ−sec−ブチルジフェノキシシラン、ジ−tert−ブチルジメトキシシラン、ジ−tert−ブチルジエトキシシラン、ジ−tert−ブチルジ−n−プロポキシシラン、ジ−tert−ブチルジ−iso−プロポキシシラン、ジ−tert−ブチルジ−n−ブトキシシラン、ジ−tert−ブチルジ−sec−ブトキシシラン、ジ−tert−ブチルジ−tert−ブトキシシラン、ジ−tert−ブチルジフェノキシシラン、ジフェニルジメトキシシラン、ジフェニルジエトキシシラン、ジフェニルジ−n−プロポキシシラン、ジフェニルジ−iso−プロポキシシラン、ジフェニルジ−n−ブトキシシラン、ジフェニルジ−sec−ブトキシシラン、ジフェニルジ−tert−ブトキシシラン、ジフェニルジフェノキシシラン、ビス(3,3,3−トリフルオロプロピル)ジメトキシシラン、メチル(3,3,3−トリフルオロプロピル)ジメトキシシラン等のジオルガノジアルコキシシランなどが挙げられる。 Examples of the component (b) in which the hydrolyzable group X is an alkoxy group include tetramethoxysilane, tetraethoxysilane, tetra-n-propoxysilane, tetra-iso-propoxysilane, tetra-n-butoxysilane, tetra- Tetraalkoxysilanes such as sec-butoxysilane, tetra-tert-butoxysilane, tetraphenoxysilane, trimethoxysilane, triethoxysilane, tripropoxysilane, fluorotrimethoxysilane, fluorotriethoxysilane, methyltrimethoxysilane, methyltri Ethoxysilane, methyltri-n-propoxysilane, methyltri-iso-propoxysilane, methyltri-n-butoxysilane, methyltri-iso-butoxysilane, methyltri-tert-butoxysilane, methyl Triphenoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, ethyltri-n-propoxysilane, ethyltri-iso-propoxysilane, ethyltri-n-butoxysilane, ethyltri-iso-butoxysilane, ethyltri-tert-butoxysilane, ethyl Triphenoxysilane, n-propyltrimethoxysilane, n-propyltriethoxysilane, n-propyltri-n-propoxysilane, n-propyltri-iso-propoxysilane, n-propyltri-n-butoxysilane, n- Propyltri-iso-butoxysilane, n-propyltri-tert-butoxysilane, n-propyltriphenoxysilane, iso-propyltrimethoxysilane, iso-propyltriethoxysilane, iso Propyltri-n-propoxysilane, iso-propyltri-iso-propoxysilane, iso-propyltri-n-butoxysilane, iso-propyltri-iso-butoxysilane, iso-propyltri-tert-butoxysilane, iso- Propyltriphenoxysilane, n-butyltrimethoxysilane, n-butyltriethoxysilane, n-butyltri-n-propoxysilane, n-butyltri-iso-propoxysilane, n-butyltri-n-butoxysilane, n-butyltri- iso-butoxysilane, n-butyltri-tert-butoxysilane, n-butyltriphenoxysilane, sec-butyltrimethoxysilane, sec-butyltriethoxysilane, sec-butyltri-n-propoxysilane, sec- Butyltri-iso-propoxysilane, sec-butyltri-n-butoxysilane, sec-butyltri-iso-butoxysilane, sec-butyltri-tert-butoxysilane, sec-butyltriphenoxysilane, t-butyltrimethoxysilane, t- Butyltriethoxysilane, t-butyltri-n-propoxysilane, t-butyltri-iso-propoxysilane, t-butyltri-n-butoxysilane, t-butyltri-iso-butoxysilane, t-butyltri-tert-butoxysilane, t-butyltriphenoxysilane, phenyltrimethoxysilane, phenyltriethoxysilane, phenyltri-n-propoxysilane, phenyltri-iso-propoxysilane, phenyltri-n-butoxysilane, phenyl Tri-iso-butoxysilane, phenyltri-tert-butoxysilane, phenyltriphenoxysilane, trifluoromethyltrimethoxysilane, pentafluoroethyltrimethoxysilane, 3,3,3-trifluoropropyltrimethoxysilane, 3,3 Trialkoxysilane such as 1,3-trifluoropropyltriethoxysilane, dimethyldimethoxysilane, dimethyldiethoxysilane, dimethyldi-n-propoxysilane, dimethyldi-iso-propoxysilane, dimethyldi-n-butoxysilane, dimethyldi-sec-butoxy Silane, dimethyldi-tert-butoxysilane, dimethyldiphenoxysilane, diethyldimethoxysilane, diethyldiethoxysilane, diethyldi-n-propoxysilane, diethyldi-i o-propoxysilane, diethyldi-n-butoxysilane, diethyldi-sec-butoxysilane, diethyldi-tert-butoxysilane, diethyldiphenoxysilane, di-n-propyldimethoxysilane, di-n-propyldiethoxysilane, di- n-propyldi-n-propoxysilane, di-n-propyldi-iso-propoxysilane, di-n-propyldi-n-butoxysilane, di-n-propyldi-sec-butoxysilane, di-n-propyldi-tert- Butoxysilane, di-n-propyldiphenoxysilane, di-iso-propyldimethoxysilane, di-iso-propyldiethoxysilane, di-iso-propyldi-n-propoxysilane, di-iso-propyldi-iso-propoxysilane , Di-iso-pro Pildi-n-butoxysilane, di-iso-propyldi-sec-butoxysilane, di-iso-propyldi-tert-butoxysilane, di-iso-propyldiphenoxysilane, di-n-butyldimethoxysilane, di-n- Butyldiethoxysilane, di-n-butyldi-n-propoxysilane, di-n-butyldi-iso-propoxysilane, di-n-butyldi-n-butoxysilane, di-n-butyldi-sec-butoxysilane, di -N-butyldi-tert-butoxysilane, di-n-butyldiphenoxysilane, di-sec-butyldimethoxysilane, di-sec-butyldiethoxysilane, di-sec-butyldi-n-propoxysilane, di-sec -Butyldi-iso-propoxysilane, di-sec-butyldi-n-but Sisilane, di-sec-butyldi-sec-butoxysilane, di-sec-butyldi-tert-butoxysilane, di-sec-butyldiphenoxysilane, di-tert-butyldimethoxysilane, di-tert-butyldiethoxysilane, Di-tert-butyldi-n-propoxysilane, di-tert-butyldi-iso-propoxysilane, di-tert-butyldi-n-butoxysilane, di-tert-butyldi-sec-butoxysilane, di-tert-butyldi- tert-butoxysilane, di-tert-butyldiphenoxysilane, diphenyldimethoxysilane, diphenyldiethoxysilane, diphenyldi-n-propoxysilane, diphenyldi-iso-propoxysilane, diphenyldi-n-butoxysilane, di Enyldi-sec-butoxysilane, diphenyldi-tert-butoxysilane, diphenyldiphenoxysilane, bis (3,3,3-trifluoropropyl) dimethoxysilane, methyl (3,3,3-trifluoropropyl) dimethoxysilane, etc. And diorganodialkoxysilane.
一般式(1)及び(2)で表わされる化合物で上記したアルコキシシランの他には、上記したアルコキシシランでアルコキシ基をハロゲン原子に置き換えたものであるハロゲンシラン類、アルコキシ基をアセトキシ基に置き換えたものであるアセトキシシラン類、アルコキシ基をイソシアネート基に置き換えたものであるイソシアネートシラン類、アルコキシ基をヒドロキシル基に置き換えたものであるシラノール類などが挙げられる。 In addition to the alkoxysilane described above in the compounds represented by the general formulas (1) and (2), halogensilanes in which the alkoxy group is replaced with a halogen atom in the above alkoxysilane, and the alkoxy group is replaced with an acetoxy group. Examples thereof include acetoxysilanes, isocyanate silanes in which alkoxy groups are replaced with isocyanate groups, and silanols in which alkoxy groups are replaced with hydroxyl groups.
また、上記一般式(1)及び(2)で表わされる化合物の加水分解縮合において、加水分解縮合反応を促進する触媒としては、蟻酸、マレイン酸、フマル酸、酢酸、プロピオン酸、ブタン酸、ペンタン酸、ヘキサン酸、ヘプタン酸、オクタン酸、ノナン酸、デカン酸、シュウ酸、アジピン酸、セバシン酸、酪酸、オレイン酸、ステアリン酸、リノール酸、リノレイン酸、サリチル酸、安息香酸、p−アミノ安息香酸、p−トルエンスルホン酸、フタル酸、スルホン酸、酒石酸、トリフルオロメタンスルフォン酸等の有機酸、塩酸、燐酸、硝酸、ホウ酸、硫酸、フッ酸等の無機酸などを用いることができる。 Further, in the hydrolysis condensation of the compounds represented by the general formulas (1) and (2), as a catalyst for promoting the hydrolysis condensation reaction, formic acid, maleic acid, fumaric acid, acetic acid, propionic acid, butanoic acid, pentane Acid, hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid, decanoic acid, oxalic acid, adipic acid, sebacic acid, butyric acid, oleic acid, stearic acid, linoleic acid, linolenic acid, salicylic acid, benzoic acid, p-aminobenzoic acid Organic acids such as p-toluenesulfonic acid, phthalic acid, sulfonic acid, tartaric acid, and trifluoromethanesulfonic acid, and inorganic acids such as hydrochloric acid, phosphoric acid, nitric acid, boric acid, sulfuric acid, and hydrofluoric acid can be used.
この触媒の使用量は、一般式(1)及び(2)で表わされる化合物1モルに対して0.0001モル〜1モルの範囲が好ましい。この使用量が1モルを超える場合、加水分解縮合時にゲル化が促進する傾向があり、0.0001モル未満の場合、重合反応が進行しない傾向がある。
また、加水分解反応で副生成するアルコールは場合によってエバポレータなどの方法で除去してもよい。
The amount of the catalyst used is preferably in the range of 0.0001 mol to 1 mol with respect to 1 mol of the compounds represented by the general formulas (1) and (2). When the amount used exceeds 1 mol, gelation tends to be promoted during hydrolysis condensation, and when it is less than 0.0001 mol, the polymerization reaction tends not to proceed.
Moreover, you may remove the alcohol byproduced by a hydrolysis reaction by methods, such as an evaporator, depending on the case.
また、加水分解縮合反応系中に存在させる水の量も適宜決められが、あまり少ない場合や多すぎる場合には成膜性が悪く、保存安定性の低下等の問題があるので、水の量は一般式(1)及び(2)で表わされる化合物1モルに対して0.5モル〜20モルの範囲とすることが好ましい。 In addition, the amount of water to be present in the hydrolysis-condensation reaction system is appropriately determined, but if it is too little or too much, the film formability is poor and there is a problem such as a decrease in storage stability. Is preferably in the range of 0.5 mol to 20 mol with respect to 1 mol of the compounds represented by the general formulas (1) and (2).
一般式(1)及び(2)で表わされる化合物を加水分解縮合して得られるシロキサン樹脂は、溶媒への溶解性、機械特性、成形性等の点から、ゲルパーミエーションクロマトグラフィー(GPC)により測定し、標準ポリスチレンの検量線を使用して換算した値の重量平均分子量が、500〜20,000であることが好ましく、1,000〜10,000であることがより好ましい。この質量平均分子量が500未満であると、シリカ系被膜の成膜性が劣る傾向がある。一方、この質量平均分子量が20,000を超えると、溶媒との相溶性が低下する傾向がある。 A siloxane resin obtained by hydrolytic condensation of the compounds represented by the general formulas (1) and (2) is obtained by gel permeation chromatography (GPC) in terms of solubility in a solvent, mechanical properties, moldability, and the like. The weight average molecular weight of the value measured and converted using a standard polystyrene calibration curve is preferably 500 to 20,000, and more preferably 1,000 to 10,000. When the mass average molecular weight is less than 500, the film formability of the silica-based film tends to be inferior. On the other hand, when the mass average molecular weight exceeds 20,000, the compatibility with the solvent tends to decrease.
本発明のシリカ系被膜形成用組成物は(c)溶媒を必須成分として含有する。(c)溶媒としては、例えば、メタノール、エタノール、n−プロパノール、i−プロパノール、n−ブタノール、i−ブタノール、sec−ブタノール、t−ブタノール、n−ペンタノール、i−ペンタノール、2−メチルブタノール、sec−ペンタノール、t−ペンタノール、3−メトキシブタノール、n−ヘキサノール、2−メチルペンタノール、sec−ヘキサノール、2−エチルブタノール、sec−ヘプタノール、n−オクタノール、2−エチルヘキサノール、sec−オクタノール、n−ノニルアルコール、n−デカノール、sec−ウンデシルアルコール、トリメチルノニルアルコール、sec−テトラデシルアルコール、sec−ヘプタデシルアルコール、フェノール、シクロヘキサノール、メチルシクロヘキサノール、ベンジルアルコール、エチレングリコール、1,2−プロピレングリコール、1,3−ブチレングリコール、ジエチレングリコール、ジプロピレングリコール、トリエチレングリコール、トリプロピレングリコール等のアルコール系、アセトン、メチルエチルケトン、メチル−n−プロピルケトン、メチル−n−ブチルケトン、メチル−iso−ブチルケトン、メチル−n−ペンチルケトン、メチル−n−ヘキシルケトン、ジエチルケトン、ジ−iso−ブチルケトン、トリメチルノナノン、シクロヘキサノン、シクロペンタノン、メチルシクロヘキサノン、2,4−ペンタンジオン、アセトニルアセトン、ジアセトンアルコール、アセトフェノン、γ−ブチロラクトン等のケトン系溶媒、エチルエーテル、iso−プロピルエーテル、n−ブチルエーテル、n−ヘキシルエーテル、2−エチルヘキシルエーテル、エチレンオキシド、1,2−プロピレンオキシド、ジオキソラン、4−メチルジオキソラン、ジオキサン、ジメチルジオキサン、エチレングリコールモノメチルエーテル、エチレングリコールモノエチルエーテル、エチレングリコールジエチルエーテル、エチレングリコールモノ−n−ヘキシルエーテル、エチレングリコールモノフェニルエーテル、エチレングリコールモノ−2−エチルブチルエーテル、エチレングリコールジブチルエーテル、ジエチレングリコールモノエチルエーテル、ジエチレングリコールジエチルエーテル、ジエチレングリコールジエチルエーテル、ジエチレングリコールモノ−n−ブチルエーテル、ジエチレングリコールジ−n−ブチルエーテル、ジエチレングリコールモノ−n−ヘキシルエーテル、エトキシトリグリコール、テトラエチレングリコールジ−n−ブチルエーテル、プロピレングリコールモノメチルエーテル、プロピレングリコールモノエチルエーテル、プロピレングリコールモノプロピルエーテル、ジプロピレングリコールモノメチルエーテル、ジプロピレングリコールモノエチルエーテル、トリプロピレングリコールモノメチルエーテル、テトラヒドロフラン、2−メチルテトラヒドロフラン等のエーテル系溶媒、酢酸メチル、酢酸エチル、酢酸n−プロピル、酢酸i−プロピル、酢酸n−ブチル、酢酸i−ブチル、酢酸sec−ブチル、酢酸n−ペンチル、酢酸sec−ペンチル、酢酸3−メトキシブチル、酢酸メチルペンチル、酢酸2−エチルブチル、酢酸2−エチルヘキシル、酢酸ベンジル、酢酸シクロヘキシル、酢酸メチルシクロヘキシル、酢酸ノニル、γ−ブチロラクトン、γ−バレロラクトン、アセト酢酸メチル、アセト酢酸エチル、酢酸エチレングリコールモノメチルエーテル、酢酸エチレングリコールモノエチルエーテル、酢酸ジエチレングリコールモノメチルエーテル、酢酸ジエチレングリコールモノエチルエーテル、酢酸ジエチレングリコールモノ−n−ブチルエーテル、酢酸プロピレングリコールモノメチルエーテル、酢酸プロピレングリコールモノエチルエーテル、酢酸プロピレングリコールモノプロピルエーテル、酢酸ジプロピレングリコールモノメチルエーテル、酢酸ジプロピレングリコールモノエチルエーテル、ジ酢酸グリコール、酢酸メトキシトリグリコール、プロピオン酸エチル、プロピオン酸n−ブチル、プロピオン酸i−アミル、シュウ酸ジエチル、シュウ酸ジ−n−ブチル、乳酸メチル、乳酸エチル、乳酸n−ブチル、乳酸n−アミル等のエステル系溶媒、アセトニトリル、N,N−ジメチルホルムアミド、N,N−ジメチルアセトアミド、N,N−ジメチルスルホキシド等の溶媒が挙げられ、これらは単独で又は2種以上を組み合わせて用いられる。 The composition for forming a silica-based film of the present invention contains (c) a solvent as an essential component. (C) As a solvent, for example, methanol, ethanol, n-propanol, i-propanol, n-butanol, i-butanol, sec-butanol, t-butanol, n-pentanol, i-pentanol, 2-methyl Butanol, sec-pentanol, t-pentanol, 3-methoxybutanol, n-hexanol, 2-methylpentanol, sec-hexanol, 2-ethylbutanol, sec-heptanol, n-octanol, 2-ethylhexanol, sec -Octanol, n-nonyl alcohol, n-decanol, sec-undecyl alcohol, trimethylnonyl alcohol, sec-tetradecyl alcohol, sec-heptadecyl alcohol, phenol, cyclohexanol, methylcyclohexanol Benzyl alcohol, ethylene glycol, 1,2-propylene glycol, 1,3-butylene glycol, diethylene glycol, dipropylene glycol, triethylene glycol, tripropylene glycol and other alcohols, acetone, methyl ethyl ketone, methyl-n-propyl ketone, methyl -N-butyl ketone, methyl-iso-butyl ketone, methyl-n-pentyl ketone, methyl-n-hexyl ketone, diethyl ketone, di-iso-butyl ketone, trimethylnonanone, cyclohexanone, cyclopentanone, methylcyclohexanone, 2,4 -Ketone solvents such as pentanedione, acetonylacetone, diacetone alcohol, acetophenone, γ-butyrolactone, ethyl ether, iso-propyl ether, n- Butyl ether, n-hexyl ether, 2-ethylhexyl ether, ethylene oxide, 1,2-propylene oxide, dioxolane, 4-methyldioxolane, dioxane, dimethyldioxane, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol diethyl ether, ethylene Glycol mono-n-hexyl ether, ethylene glycol monophenyl ether, ethylene glycol mono-2-ethylbutyl ether, ethylene glycol dibutyl ether, diethylene glycol monoethyl ether, diethylene glycol diethyl ether, diethylene glycol diethyl ether, diethylene glycol mono-n-butyl ether, diethylene glycol di -N-Butyl A Diethylene glycol mono-n-hexyl ether, ethoxytriglycol, tetraethylene glycol di-n-butyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol monopropyl ether, dipropylene glycol monomethyl ether, dipropylene glycol mono Ether solvents such as ethyl ether, tripropylene glycol monomethyl ether, tetrahydrofuran, 2-methyltetrahydrofuran, methyl acetate, ethyl acetate, n-propyl acetate, i-propyl acetate, n-butyl acetate, i-butyl acetate, sec-acetic acid Butyl, n-pentyl acetate, sec-pentyl acetate, 3-methoxybutyl acetate, methyl pentyl acetate, 2-ethylbutyl acetate, acetic acid -Ethylhexyl, benzyl acetate, cyclohexyl acetate, methyl cyclohexyl acetate, nonyl acetate, γ-butyrolactone, γ-valerolactone, methyl acetoacetate, ethyl acetoacetate, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, diethylene glycol monomethyl ether acetate , Diethylene glycol monoethyl ether acetate, diethylene glycol mono-n-butyl ether acetate, propylene glycol monomethyl ether acetate, propylene glycol monoethyl ether acetate, propylene glycol monopropyl ether acetate, dipropylene glycol monomethyl ether acetate, dipropylene glycol monoethyl ether acetate, Diethyl acetate, methoxytriglycol acetate, propylene Ester solvents such as ethyl acetate, n-butyl propionate, i-amyl propionate, diethyl oxalate, di-n-butyl oxalate, methyl lactate, ethyl lactate, n-butyl lactate, n-amyl lactate, acetonitrile , N, N-dimethylformamide, N, N-dimethylacetamide, N, N-dimethylsulfoxide and the like, and these may be used alone or in combination of two or more.
溶媒の使用量は、シロキサン樹脂の量が3重量%〜25重量%となるような量とされることが好ましい。溶媒の量が少なすぎると安定性、成膜性等が劣る傾向があり、多すぎると所望の膜厚を得ることが困難となる傾向がある。 The amount of the solvent used is preferably such that the amount of the siloxane resin is 3% by weight to 25% by weight. If the amount of the solvent is too small, the stability and film formability tend to be inferior, and if it is too large, it tends to be difficult to obtain a desired film thickness.
本発明のシリカ系被膜形成用組成物は(d)オニウム塩を必須成分として含有する。(d)オニウム塩としては、アンモニウム塩、ホスホニウム塩、アルソニウム塩、スチボニウム塩、オキソニウム塩、スルホニウム塩、セレノニウム塩、スタンノニウム塩、ヨードニウム塩等が挙げられる。 The composition for forming a silica-based film of the present invention contains (d) an onium salt as an essential component. (D) Examples of the onium salt include ammonium salt, phosphonium salt, arsonium salt, stibonium salt, oxonium salt, sulfonium salt, selenonium salt, stannonium salt, iodonium salt and the like.
これら(d)オニウム塩として、組成物の安定性の点からアンモニウム塩が好ましく、例えば、テトラメチルアンモニウムオキサイド、テトラメチルアンモニウムクロライド、テトラメチルアンモニウムブロマイド、テトラメチルアンモニウムフロライド、テトラブチルアンモニウムオキサイド、テトラブチルアンモニウムクロライド、テトラブチルアンモニウムブロマイド、テトラブチルアンモニウムフロライド、テトラメチルアンモニウム硝酸塩、テトラメチルアンモニウム酢酸塩、テトラメチルアンモニウムプロピオン酸塩、テトラメチルアンモニウムマレイン酸塩、テトラメチルアンモニウム硫酸塩等が挙げられる。 As these (d) onium salts, ammonium salts are preferable from the viewpoint of the stability of the composition. For example, tetramethylammonium oxide, tetramethylammonium chloride, tetramethylammonium bromide, tetramethylammonium fluoride, tetrabutylammonium oxide, tetra Examples include butylammonium chloride, tetrabutylammonium bromide, tetrabutylammonium fluoride, tetramethylammonium nitrate, tetramethylammonium acetate, tetramethylammonium propionate, tetramethylammonium maleate, and tetramethylammonium sulfate.
さらに、シリカ系被膜の電気特性の点から、テトラメチルアンモニウム硝酸塩、テトラメチルアンモニウム酢酸塩、テトラメチルアンモニウムプロピオン酸塩、テトラメチルアンモニウムマレイン酸塩、テトラメチルアンモニウム硫酸塩等のアンモニウム塩が特に好ましい。 Furthermore, ammonium salts such as tetramethylammonium nitrate, tetramethylammonium acetate, tetramethylammonium propionate, tetramethylammonium maleate and tetramethylammonium sulfate are particularly preferred from the viewpoint of the electrical characteristics of the silica-based coating.
これら(d)の使用量は、(a)成分と(b)成分によるシロキサン樹脂の総量に対して0.001重量%〜0.5重量%であることが好ましく、0.01重量%〜0.1重量%であることがより好ましい。使用量が少なすぎると最終的に得られるシリカ系被膜の電気特性、機械強度が劣る傾向がある。また多すぎると組成物の安定性、成膜性等が劣る傾向があり、さらにシリカ系被膜の平坦性、電気特性、プロセス適合性が劣る傾向がある。 The amount of (d) used is preferably 0.001% by weight to 0.5% by weight, and 0.01% by weight to 0% by weight based on the total amount of the siloxane resin by the components (a) and (b). More preferably, it is 1% by weight. If the amount used is too small, the final silica-based film tends to have poor electrical properties and mechanical strength. On the other hand, if the amount is too large, the stability of the composition, the film formability and the like tend to be inferior, and the flatness, electrical characteristics and process suitability of the silica-based film tend to be inferior.
また、これら(d)は、必要に応じて水や溶媒によって溶解又は希釈して所望の濃度になるよう添加することができる。
また、オニウム塩を水溶液とした場合、そのpHが1.5〜10であることが好ましく、2〜8であることがより好ましく、3〜6であることが特に好ましい。このpHが1.5を下回るか又はpHが10を超えると、組成物の安定性、及び成膜性等が劣る傾向がある。
Moreover, these (d) can be added so that it may become a desired density | concentration by melt | dissolving or diluting with water or a solvent as needed.
Moreover, when an onium salt is used as an aqueous solution, the pH is preferably 1.5 to 10, more preferably 2 to 8, and particularly preferably 3 to 6. When this pH is less than 1.5 or when the pH exceeds 10, the stability of the composition and the film formability tend to be inferior.
本発明のシリカ系被膜形成用組成物に、誘電特性の調整容易性の点から、250〜500℃の加熱温度で熱分解又は揮発する熱分解揮発性化合物を適宜加えてもよい。
熱分解揮発性化合物としては、250〜500℃の加熱温度で熱分解揮発を有するものであれば特に制限はないが、例えば、ポリアルキレンオキサイド構造を有する重合体、(メタ)アクリレート系重合体、ポリエステル重合体、ポリカーボネート重合体、ポリアンハイドライド重合体、テトラキスシラン類等が挙げられる。
A pyrolytic volatile compound that thermally decomposes or volatilizes at a heating temperature of 250 to 500 ° C. may be appropriately added to the composition for forming a silica-based film of the present invention from the viewpoint of easy adjustment of dielectric properties.
The pyrolysis volatile compound is not particularly limited as long as it has pyrolysis volatilization at a heating temperature of 250 to 500 ° C., for example, a polymer having a polyalkylene oxide structure, a (meth) acrylate polymer, Examples thereof include polyester polymers, polycarbonate polymers, polyanhydride polymers, and tetrakissilanes.
上記ポリアルキレンオキサイド構造としてはポリエチレンオキサイド構造、ポリプロピレンオキサイド構造、ポリテトラメチレンオキサイド構造、ポリブチレンオキサイド構造等が挙げられる。 Examples of the polyalkylene oxide structure include a polyethylene oxide structure, a polypropylene oxide structure, a polytetramethylene oxide structure, and a polybutylene oxide structure.
具体的には、ポリオキシエチレンアルキルエーテル、ポリオキシエチレンステロールエーテル、ポリオキシエチレンラノリン誘導体、アルキルフェノールホルマリン縮合物の酸化エチレン誘導体、ポリオキシエチレンポリオキシプロピレンブロックコポリマー、ポリオキシエチレンポリオキシプロピレンアルキルエーテル等のエーテル型化合物、ポリオキシエチレングリセリン脂肪酸エステル、ポリオキシエチレンソルビトール脂肪酸エステル、ポリオキシエチレン脂肪酸アルカノールアミド硫酸塩等のエーテルエステル型化合物、ポリエチレングリコール脂肪酸エステル、エチレングリコール脂肪酸エステル、脂肪酸モノグリセリド、ポリグリセリン脂肪酸エステル、ソルビタン脂肪酸エステル、プロピレングリコール脂肪酸エステル等のエーテルエステル型化合物等を挙げることができる。 Specifically, polyoxyethylene alkyl ether, polyoxyethylene sterol ether, polyoxyethylene lanolin derivative, ethylene oxide derivative of alkylphenol formalin condensate, polyoxyethylene polyoxypropylene block copolymer, polyoxyethylene polyoxypropylene alkyl ether, etc. Ether type compounds, polyoxyethylene glycerin fatty acid ester, polyoxyethylene sorbitol fatty acid ester, polyoxyethylene fatty acid alkanolamide sulfate and other ether ester type compounds, polyethylene glycol fatty acid ester, ethylene glycol fatty acid ester, fatty acid monoglyceride, polyglycerin fatty acid Esters, sorbitan fatty acid esters, propylene glycol fatty acid esters, etc. And the like over ether ester type compounds.
また、(メタ)アクリレート系重合体を構成するアクリル酸エステル及びメタクリル酸エステルとしては、アクリル酸アルキルエステル、メタクリル酸アルキルエステル、アクリル酸アルコキシアルキルエステル、メタクリル酸アルキルエステル、メタクリル酸アルコキシアルキルエステル等を挙げることが出来る。 Moreover, as acrylic acid ester and methacrylic acid ester constituting the (meth) acrylate polymer, acrylic acid alkyl ester, methacrylic acid alkyl ester, acrylic acid alkoxyalkyl ester, methacrylic acid alkyl ester, methacrylic acid alkoxyalkyl ester, etc. I can list them.
アクリル酸アルキルエステルとしては、アクリル酸メチル、アクリル酸エチル、アクリル酸n−プロピル、アクリル酸イソプロピル、アクリル酸n−ブチル、アクリル酸イソブチル、アクリル酸ペンチル、アクリル酸ヘキシル等の炭素数1〜6のアルキルエステル、メタクリル酸アルキルエステルとしては、メタクリル酸メチル、メタクリル酸エチル、メタクリル酸n−プロピル、メタクリル酸イソプロピル、メタクリル酸n−ブチル、メタクリル酸イソブチル、メタクリル酸ペンチル、メタクリル酸ヘキシル等の炭素数1〜6のアルキルエステル、アクリル酸アルコキシアルキルエステルとしては、アクリル酸メトキシメチル、アクリル酸エトキシエチル、メタクリル酸アルコキシアルキルエステルとしては、メタクリル酸メトキシメチル、メタクリル酸エトキシエチル等を挙げることが出来る。 Examples of alkyl acrylate esters include 1 to 6 carbon atoms such as methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, pentyl acrylate, and hexyl acrylate. Examples of the alkyl ester and alkyl methacrylate ester include methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, pentyl methacrylate, hexyl methacrylate and the like. ~ 6 alkyl esters, acrylic acid alkoxyalkyl esters as methoxymethyl acrylate, ethoxyethyl acrylate, methacrylic acid alkoxyalkyl esters as methoxymethyl methacrylate It can be mentioned methacrylic acid ethoxyethyl, and the like.
ヒドロキシル基を有するアクリル酸及びメタクリル酸はアクリル酸2−ヒドロキシルエチル、アクリル酸2−ヒドロキシルプロピル、メタクリル酸2−ヒドロキシルエチル、メタクリル酸2−ヒドロキシルプロピル等を挙げることが出来る。 Examples of the acrylic acid and methacrylic acid having a hydroxyl group include 2-hydroxylethyl acrylate, 2-hydroxylpropyl acrylate, 2-hydroxylethyl methacrylate, 2-hydroxylpropyl methacrylate, and the like.
また、ポリエステルとしては、ヒドロキシカルボン酸の重縮合物、ラクトンの開環重合物、脂肪族ポリオールと脂肪族ポリカルボン酸との重縮合物等を挙げることが出来る。
また、ポリカーボネートとしては、ポリエチレンカーボネート、ポリプロピレンカーボネート、ポリトリメチレンカーボネート、ポリテトラメチレンカーボネート、ポリペンタメチレンカーボネート、ポリヘキサメチレンカーボネート等の炭酸とアルキレングリコールの重縮合物を挙げることが出来る。
Examples of polyesters include hydroxycarboxylic acid polycondensates, lactone ring-opening polymers, and polycondensates of aliphatic polyols and aliphatic polycarboxylic acids.
Examples of the polycarbonate include polycondensates of carbonic acid and alkylene glycol such as polyethylene carbonate, polypropylene carbonate, polytrimethylene carbonate, polytetramethylene carbonate, polypentamethylene carbonate, and polyhexamethylene carbonate.
また、ポリアンハイドライドとしては、ポリマロニルオキシド、ポリアジポイルオキシド、ポリピメイルオキシド、ポリスベロイルオキシド、ポリアゼライルオキシド、ポリセバコイルオキシド等のジカルボン酸の重縮合物等を挙げることが出来る。
また、テトラキスシラン類としては、テトラキス(トリメチルシロキシ)シラン、テトラキス(トリメチルシリル)シラン、テトラキス(メトキシエトキシ)シラン、テトラキス(メトキシエトキシエトキシ)シラン、テトラキス(メトキシプロポキシ)シラン等を挙げることが出来る。
Examples of the polyanhydride include polycondensates of dicarboxylic acids such as polymalonyl oxide, polyadipoyl oxide, polypimeyl oxide, polysuberoyl oxide, polyazelayl oxide, polysebacoyl oxide, and the like. .
Examples of tetrakissilanes include tetrakis (trimethylsiloxy) silane, tetrakis (trimethylsilyl) silane, tetrakis (methoxyethoxy) silane, tetrakis (methoxyethoxyethoxy) silane, and tetrakis (methoxypropoxy) silane.
熱分解揮発性化合物が250℃を下回る温度で熱分解又は揮発するものであると、シロキサン骨格形成前に熱分解揮発してしまうため、所望の誘電特性が得られない恐れがある。一方、この熱分解揮発性化合物が500℃を超える温度で熱分解又は揮発するものであると、配線金属の劣化が生じる恐れがある。したがって、かかる温度範囲で熱分解又は揮発するものであれば、配線金属の劣化を抑えつつ、絶縁膜の誘電特性を調整し易くなる利点がある。 If the pyrolytic volatile compound is pyrolyzed or volatilized at a temperature lower than 250 ° C., it may be pyrolyzed and volatilized before the siloxane skeleton is formed, so that desired dielectric properties may not be obtained. On the other hand, if the pyrolytic volatile compound is pyrolyzed or volatilized at a temperature exceeding 500 ° C., the wiring metal may be deteriorated. Therefore, if it decomposes or volatilizes in such a temperature range, there is an advantage that it is easy to adjust the dielectric characteristics of the insulating film while suppressing the deterioration of the wiring metal.
なお、本発明のシリカ系被膜を形成する際の組成物には、アルカリ金属やアルカリ土類金属が含有されることは好ましくない。これらの濃度は組成物中100ppb以下であることが好ましく、20ppb以下であることがより好ましい。これらのイオンが多く含有すると半導体素子に金属イオンが流れ込みデバイス性能そのものに影響を与える可能性がある。
アルカリ金属やアルカリ土類金属は、必要に応じてイオン交換フィルターの使用により除去することができる。
In addition, it is not preferable that the composition for forming the silica-based film of the present invention contains an alkali metal or an alkaline earth metal. These concentrations are preferably 100 ppb or less, more preferably 20 ppb or less in the composition. If these ions are contained in a large amount, metal ions may flow into the semiconductor element and affect the device performance itself.
Alkali metal and alkaline earth metal can be removed by use of an ion exchange filter, if necessary.
本発明の電子部品としては、半導体素子、多層配線板等の絶縁被膜を有するものが挙げられる。本発明のシリカ系被膜は、半導体素子においては、表面保護膜、バッファーコート膜、層間絶縁膜等として使用することができる。多層配線板においては、層間絶縁膜として使用することができる。かかる適用により、信号伝搬遅延時間の低減等の高性能化と同時に高信頼性を達成できる。 Examples of the electronic component of the present invention include those having an insulating coating such as a semiconductor element and a multilayer wiring board. The silica-based coating of the present invention can be used as a surface protective film, a buffer coat film, an interlayer insulating film and the like in a semiconductor element. In a multilayer wiring board, it can be used as an interlayer insulating film. By such application, high reliability can be achieved simultaneously with high performance such as reduction of signal propagation delay time.
半導体素子としては、ダイオード、トランジスタ、化合物半導体、サーミスタ、バリスタ、サイリスタ等の個別半導体、DRAM(ダイナミック・ランダム・アクセス・メモリー)、SRAM(スタティック・ランダム・アクセス・メモリー)、EPROM(イレイザブル・プログラマブル・リード・オンリー・メモリー)、マスクROM(マスク・リード・オンリー・メモリー)、EEPROM(エレクトリカル・イレイザブル・プログラマブル・リード・オンリー・メモリー)、フラッシュメモリー等の記憶素子、マイクロプロセッサー、DSP、ASIC等の理論回路素子、MMIC(モノリシック・マイクロウェーブ集積回路)に代表される化合物半導体等の集積回路素子、混成集積回路(ハイブリッドIC)、発光ダイオード、電荷結合素子等の光電変換素子などが挙げられる。
多層配線板としては、MCM等の高密度配線板などが挙げられる。
As semiconductor elements, individual semiconductors such as diodes, transistors, compound semiconductors, thermistors, varistors, thyristors, DRAMs (Dynamic Random Access Memory), SRAMs (Static Random Access Memory), EPROMs (Erasable Programmable Programmable) Theories of read-only memory (ROM), mask ROM (mask read-only memory), EEPROM (electrically erasable programmable read-only memory), flash memory, etc., microprocessor, DSP, ASIC, etc. Circuit elements, integrated circuit elements such as compound semiconductors such as MMIC (monolithic microwave integrated circuit), hybrid integrated circuits (hybrid IC), light emitting diodes, electric Such as a photoelectric conversion element such as a coupling element and the like.
Examples of the multilayer wiring board include a high-density wiring board such as MCM.
本発明において被膜を形成する場合、成膜性、膜均一性を考慮して主にスピンコート法が用いられる。スピンコート法を用いた膜の形成方法として、はじめに膜形成用組成物を基板上に滴下し、すぐに500〜5000回転/分、好ましくは、1000〜3000回転/分でスピン塗布する。スピン塗布における回転数が小さ過ぎる場合、膜均一性が悪化し、大きすぎる場合成膜性が悪化するため好ましくない。 When forming a film in the present invention, a spin coating method is mainly used in consideration of film formability and film uniformity. As a method of forming a film using the spin coating method, first, a film forming composition is dropped on a substrate and immediately spin-coated at 500 to 5000 revolutions / minute, preferably 1000 to 3000 revolutions / minute. If the number of revolutions in spin coating is too small, the film uniformity deteriorates, and if too high, the film formability deteriorates, which is not preferable.
本発明の被膜は、最終加熱工程前に予備硬化工程を必須とする。予備硬化工程は被膜を塗布した後に、溶媒の乾燥および樹脂の硬化度を上げることを目的に100℃〜350℃の温度で1秒〜1時間硬化することをいう。この予備硬化工程は必要に応じて多段であっても構わない。 The coating of the present invention requires a preliminary curing step before the final heating step. The pre-curing step refers to curing at a temperature of 100 ° C. to 350 ° C. for 1 second to 1 hour for the purpose of drying the solvent and increasing the degree of curing of the resin after coating. This pre-curing step may be multistage as necessary.
好ましくは150℃〜300℃でホットプレートにて予備硬化を行う。さらに好ましくは150℃〜300℃の範囲で予備硬化を行う。最も好ましいのは予備硬化の最終段階での温度が200℃〜250℃である。温度が低すぎる場合、溶媒の乾燥が十分に行われないため好ましくなく、乾燥温度が高すぎる場合、骨格形成前にポーラス形成用熱分解揮発性化合物が熱分解揮発してしまうため、誘電特性が得られず好ましくない。 Pre-curing is preferably performed on a hot plate at 150 to 300 ° C. More preferably, pre-curing is performed in the range of 150 ° C to 300 ° C. Most preferably, the temperature at the final stage of pre-curing is 200 ° C to 250 ° C. If the temperature is too low, it is not preferable because the solvent is not sufficiently dried, and if the drying temperature is too high, the pyrogenic volatile compound for porous formation is pyrolyzed and volatilized before the skeleton is formed. It is not preferable because it cannot be obtained.
予備硬化時間は2秒〜10分が望ましい。さらに好ましくは10秒〜5分であり、最も好ましくは30秒〜3分である。硬化時間が長いとスループットが悪くなり、好ましくない。硬化時間が短いと溶媒の乾燥が十分に行われない、および樹脂の硬化度があがらないため、好ましくない。 The pre-curing time is preferably 2 seconds to 10 minutes. More preferably, it is 10 seconds to 5 minutes, and most preferably 30 seconds to 3 minutes. If the curing time is long, the throughput deteriorates, which is not preferable. If the curing time is short, the solvent is not sufficiently dried and the degree of curing of the resin is not increased, which is not preferable.
ここでいう最終加熱工程とは350℃〜500℃で行うことが好ましい。最終加熱工程はN2、Ar、He等の不活性雰囲気下で行うのが好ましく、酸素濃度が1000ppm以下であるのが好ましい。また加熱時間は2分〜60分であるのが好ましい。加熱時間が長いと配線金属の劣化が起こるため好ましくない。また装置としては、石英チューブ炉、ホットプレート、ラピッドサーマルアニール等の加熱処理装置が好ましい。 The final heating step here is preferably performed at 350 ° C. to 500 ° C. The final heating step is preferably performed in an inert atmosphere such as N 2 , Ar, or He, and the oxygen concentration is preferably 1000 ppm or less. The heating time is preferably 2 minutes to 60 minutes. If the heating time is long, the wiring metal is deteriorated, which is not preferable. The apparatus is preferably a heat treatment apparatus such as a quartz tube furnace, a hot plate, or rapid thermal annealing.
本発明において、比誘電率とは23℃±2℃、湿度40%±10%の雰囲気下で測定された値を用いる。比誘電率測定用の被膜形成方法としては、被膜の膜厚は0.5μm〜0.6μmになるように被膜を形成する。具体的には、低抵抗率シリコンウエハ(抵抗率<10Ωcm)上にスピンコート法で塗布した後、250℃に加熱したホットプレートで溶媒除去し、最後に窒素雰囲気下425℃/30分最終硬化することにより被膜を形成する。 In the present invention, the relative dielectric constant is a value measured in an atmosphere of 23 ° C. ± 2 ° C. and humidity 40% ± 10%. As a method for forming a film for measuring the relative dielectric constant, the film is formed so that the film thickness is 0.5 μm to 0.6 μm. Specifically, after coating on a low resistivity silicon wafer (resistivity <10 Ωcm) by spin coating, the solvent was removed with a hot plate heated to 250 ° C., and finally cured at 425 ° C./30 minutes in a nitrogen atmosphere. By doing so, a film is formed.
被膜形成後、真空蒸着装置でAl金属を直径が2mm(φ)及び厚さが約0.1μmになるように真空蒸着する。絶縁被膜がAl金属と低抵抗率シリコンウエハに挟まれた構造を形成して電荷容量を測定する。 After the coating is formed, Al metal is vacuum-deposited with a vacuum deposition apparatus so that the diameter is 2 mm (φ) and the thickness is about 0.1 μm. A structure in which an insulating film is sandwiched between an Al metal and a low resistivity silicon wafer is formed, and the charge capacity is measured.
ここで、膜の膜厚は、ガートナー製のエリプソメータL116Bで測定された膜厚であり、具体的には被膜上にHe−Neレーザー照射し、照射により生じた位相差から求められる膜厚を用いる。 Here, the film thickness is a film thickness measured by an ellipsometer L116B manufactured by Gartner, and specifically, a film thickness obtained from a phase difference generated by irradiation with He-Ne laser irradiation on the coating film is used. .
被膜の比誘電率の測定は、Al金属と低抵抗率シリコンウエハ間の電荷容量を測定することにより行う。電荷容量は、LFインピーダンスアナライザー(横河電機製:HP4192A)に誘電体テスト・フィクスチャー(横河電機製:HP16451B)を接続させて測定する。測定時の周波数を1MHzとして測定された値を用いる。
上記測定値より次式に代入して、被膜の比誘電率を測定する。
The relative dielectric constant of the coating is measured by measuring the charge capacity between the Al metal and the low resistivity silicon wafer. The charge capacity is measured by connecting a dielectric test fixture (Yokogawa Electric: HP16451B) to an LF impedance analyzer (Yokogawa Electric: HP4192A). A value measured with a frequency at the time of measurement of 1 MHz is used.
The relative dielectric constant of the film is measured by substituting into the following equation from the measured value.
また、本発明の膜は、弾性率が10GPa以上であることが好ましく、13GPa以上であることがより好ましく、15GPa以上であることがさらに好ましく、18GPa以上であることが特に好ましく、20GPa以上であることが最も好ましく、上限は特に制限はない。弾性率が2.5GPa未満では、例えば、半導体絶縁膜として使用する場合の加工時に問題が起こる可能性があるので好ましくない。 The film of the present invention preferably has an elastic modulus of 10 GPa or more, more preferably 13 GPa or more, further preferably 15 GPa or more, particularly preferably 18 GPa or more, and 20 GPa or more. The upper limit is not particularly limited. If the elastic modulus is less than 2.5 GPa, for example, a problem may occur during processing when used as a semiconductor insulating film.
本発明において膜の弾性率とは、膜の表面近傍での弾性率であり、MTS社製のナノインデンターDCMを用いて得られた値を用いる。被膜の形成方法としては、シリコンウエハ上に被膜の膜厚が0.5μm〜0.6μmになるように回転塗布し、ホットプレートで溶媒除去をした後、425℃/30分硬化した被膜を用いる。 In the present invention, the elastic modulus of the film is an elastic modulus in the vicinity of the surface of the film, and a value obtained using a nanoindenter DCM manufactured by MTS is used. As a method of forming a coating, a coating that is spin-coated on a silicon wafer so that the thickness of the coating is 0.5 μm to 0.6 μm, the solvent is removed with a hot plate, and cured at 425 ° C./30 minutes is used. .
被膜の膜厚が薄いと下地の影響を受けてしまうため好ましくない。表面近傍とは、膜厚の1/10以内の深度で、具体的には膜表面から深さ15nm〜50nm潜り込んだところでの弾性率を示す。
また、荷重と荷重速度との間では、次式のような関係で変動させる。
A thin film is not preferable because it is affected by the substrate. The vicinity of the surface indicates the elastic modulus at a depth within 1/10 of the film thickness, specifically, the depth of 15 nm to 50 nm from the film surface.
Further, the load and the load speed are fluctuated according to the following equation.
また、押し込みを行う圧子には、バーコビッチ圧子(素材:ダイヤモンド)を用い、圧子の振幅周波数を45Hzに設定して測定する。 In addition, a Barkovic indenter (material: diamond) is used as the indenter for pushing, and the amplitude frequency of the indenter is set to 45 Hz for measurement.
以下、実施例により本発明を説明するが、本発明はこれらの記載に制限するものではない。
実施例1
テトラエトキシシラン7.19g、メチルトリエトキシシラン5.61g及びビス(トリエトキシシリル)メタン2.24gをプロピレングリコールモノメチルエーテルアセテート29.96gに溶解させた溶液中に、0.631%硝酸水溶液4.44gを攪拌下で1分かけて滴下した。
EXAMPLES Hereinafter, although an Example demonstrates this invention, this invention is not restrict | limited to these description.
Example 1
In a solution of 7.19 g of tetraethoxysilane, 5.61 g of methyltriethoxysilane and 2.24 g of bis (triethoxysilyl) methane in 29.96 g of propylene glycol monomethyl ether acetate, a 0.631% aqueous nitric acid solution is added. 44 g was added dropwise over 1 minute under stirring.
滴下終了後2時間反応させ、次いで、2.38%のテトラメチルアンモニウム硝酸塩水溶液(PH3.6)0.21gを添加し、さらに2時間攪拌後、減圧下、温浴中で生成エタノール及びプロピレングリコールモノメチルエーテルアセテートの一部を留去し、その後全量が50gになるようにプロピレングリコールモノメチルエーテルアセテートを加え、本発明のシリカ系被膜形成用組成物を作製した。 After completion of the dropwise addition, the reaction was allowed to proceed for 2 hours, and then 0.21 g of a 2.38% tetramethylammonium nitrate aqueous solution (PH3.6) was added, and the mixture was further stirred for 2 hours. A part of the ether acetate was distilled off, and then propylene glycol monomethyl ether acetate was added so that the total amount became 50 g, to prepare a composition for forming a silica-based film of the present invention.
実施例2
テトラエトキシシラン6.21g、メチルトリエトキシシラン4.85g及びビス(トリエトキシシリル)メタン3.88gをプロピレングリコールモノメチルエーテルアセテート30.08gに溶解させた溶液中に、0.661%硝酸水溶液4.41gを攪拌下で1分かけて滴下した。
Example 2
In a solution of 6.21 g of tetraethoxysilane, 4.85 g of methyltriethoxysilane, and 3.88 g of bis (triethoxysilyl) methane in 30.08 g of propylene glycol monomethyl ether acetate, a 0.661% aqueous nitric acid solution. 41g was dripped over 1 minute under stirring.
滴下終了後2時間反応させ、次いで、2.38%のテトラメチルアンモニウム硝酸塩水溶液(PH3.6)0.21gを添加し、さらに2時間攪拌後、減圧下、温浴中で生成エタノール及びプロピレングリコールモノメチルエーテルアセテートの一部を留去し、その後全量が50gになるようにプロピレングリコールモノメチルエーテルアセテートを加え、本発明のシリカ系被膜形成用組成物を作製した。 After completion of the dropwise addition, the reaction was allowed to proceed for 2 hours, and then 0.21 g of a 2.38% tetramethylammonium nitrate aqueous solution (PH3.6) was added, and the mixture was further stirred for 2 hours. A part of the ether acetate was distilled off, and then propylene glycol monomethyl ether acetate was added so that the total amount became 50 g, to prepare a composition for forming a silica-based film of the present invention.
実施例3
テトラエトキシシラン4.92g、メチルトリエトキシシラン3.84g及びビス(トリエトキシシリル)メタン6.15gをプロピレングリコールモノメチルエーテルアセテート30.51gに溶解させた溶液中に、0.641%硝酸水溶液4.37gを攪拌下で1分かけて滴下した。
Example 3
In a solution obtained by dissolving 4.92 g of tetraethoxysilane, 3.84 g of methyltriethoxysilane and 6.15 g of bis (triethoxysilyl) methane in 30.51 g of propylene glycol monomethyl ether acetate, a 4.41% nitric acid aqueous solution. 37g was dripped over 1 minute under stirring.
滴下終了後2時間反応させ、次いで、2.38%のテトラメチルアンモニウム硝酸塩水溶液(PH3.6)0.21gを添加し、さらに2時間攪拌後、減圧下、温浴中で生成エタノール及びプロピレングリコールモノメチルエーテルアセテートの一部を留去し、その後全量が50gになるようにプロピレングリコールモノメチルエーテルアセテートを加え、本発明のシリカ系被膜形成用組成物を作製した。 After completion of the dropwise addition, the reaction was allowed to proceed for 2 hours, and then 0.21 g of a 2.38% tetramethylammonium nitrate aqueous solution (PH3.6) was added, and the mixture was further stirred for 2 hours, and then produced ethanol and propylene glycol monomethyl in a warm bath under reduced pressure. A part of the ether acetate was distilled off, and then propylene glycol monomethyl ether acetate was added so that the total amount became 50 g, to prepare a composition for forming a silica-based film of the present invention.
実施例4
テトラエトキシシラン4.43g、メチルトリエトキシシラン7.85g及びビス(トリエトキシシリル)メタン2.18gをプロピレングリコールモノメチルエーテルアセテート31.04gに溶解させた溶液中に、0.648%硝酸水溶液4.17gを攪拌下で1分かけて滴下した。
Example 4
In a solution obtained by dissolving 4.43 g of tetraethoxysilane, 7.85 g of methyltriethoxysilane and 2.18 g of bis (triethoxysilyl) methane in 31.04 g of propylene glycol monomethyl ether acetate, a 4.48% nitric acid aqueous solution. 17 g was added dropwise over 1 minute under stirring.
滴下終了後2時間反応させ、次いで、2.38%のテトラメチルアンモニウム硝酸塩水溶液(PH3.6)0.21gを添加し、さらに2時間攪拌後、減圧下、温浴中で生成エタノール及びプロピレングリコールモノメチルエーテルアセテートの一部を留去し、その後全量が50gになるようにプロピレングリコールモノメチルエーテルアセテートを加え、本発明のシリカ系被膜形成用組成物を作製した。 After completion of the dropwise addition, the reaction was allowed to proceed for 2 hours, and then 0.21 g of a 2.38% tetramethylammonium nitrate aqueous solution (PH3.6) was added, and the mixture was further stirred for 2 hours. A part of the ether acetate was distilled off, and then propylene glycol monomethyl ether acetate was added so that the total amount became 50 g, to prepare a composition for forming a silica-based film of the present invention.
実施例5
テトラエトキシシラン3.85g、メチルトリエトキシシラン6.83g及びビス(トリエトキシシリル)メタン3.79gをプロピレングリコールモノメチルエーテルアセテート31.12gに溶解させた溶液中に、0.646%硝酸水溶液4.18gを攪拌下で1分かけて滴下した。
Example 5
In a solution of 3.85 g of tetraethoxysilane, 6.83 g of methyltriethoxysilane, and 3.79 g of bis (triethoxysilyl) methane in 31.12 g of propylene glycol monomethyl ether acetate, a 0.646% aqueous nitric acid solution is added. 18 g was added dropwise over 1 minute under stirring.
滴下終了後2時間反応させ、次いで、2.38%のテトラメチルアンモニウム硝酸塩水溶液(PH3.6)0.21gを添加し、さらに2時間攪拌後、減圧下、温浴中で生成エタノール及びプロピレングリコールモノメチルエーテルアセテートの一部を留去し、その後全量が50gになるようにプロピレングリコールモノメチルエーテルアセテートを加え、本発明のシリカ系被膜形成用組成物を作製した。 After completion of the dropwise addition, the reaction was allowed to proceed for 2 hours, and then 0.21 g of a 2.38% tetramethylammonium nitrate aqueous solution (PH3.6) was added, and the mixture was further stirred for 2 hours. A part of the ether acetate was distilled off, and then propylene glycol monomethyl ether acetate was added so that the total amount became 50 g, to prepare a composition for forming a silica-based film of the present invention.
実施例6
メチルトリエトキシシラン9.81g及びビス(トリエトキシシリル)メタン3.74gをプロピレングリコールモノメチルエーテルアセテート32.37gに溶解させた溶液中に、0.636%硝酸水溶液3.77gを攪拌下で1分かけて滴下した。
Example 6
In a solution prepared by dissolving 9.81 g of methyltriethoxysilane and 3.74 g of bis (triethoxysilyl) methane in 32.37 g of propylene glycol monomethyl ether acetate, 3.77 g of 0.636% nitric acid aqueous solution was stirred for 1 minute. It was dripped over.
滴下終了後2時間反応させ、次いで、2.38%のテトラメチルアンモニウム硝酸塩水溶液(PH3.6)0.21gを添加し、さらに2時間攪拌後、減圧下、温浴中で生成エタノール及びプロピレングリコールモノメチルエーテルアセテートの一部を留去し、その後全量が50gになるようにプロピレングリコールモノメチルエーテルアセテートを加え、本発明のシリカ系被膜形成用組成物を作製した。 After completion of the dropwise addition, the reaction was allowed to proceed for 2 hours, and then 0.21 g of a 2.38% tetramethylammonium nitrate aqueous solution (PH3.6) was added, and the mixture was further stirred for 2 hours. A part of the ether acetate was distilled off, and then propylene glycol monomethyl ether acetate was added so that the total amount became 50 g, to prepare a composition for forming a silica-based film of the present invention.
実施例7
テトラエトキシシラン6.62g、メチルトリエトキシシラン5.17g及びビス(トリメトキシシリル)ヘキサン1.98gをプロピレングリコールモノメチルエーテルアセテート31.93gに溶解させた溶液中に、0.636%硝酸水溶液4.09gを攪拌下で1分かけて滴下した。
Example 7
In a solution of 6.62 g of tetraethoxysilane, 5.17 g of methyltriethoxysilane and 1.98 g of bis (trimethoxysilyl) hexane in 31.93 g of propylene glycol monomethyl ether acetate, a 0.636% aqueous nitric acid solution is added. 09 g was added dropwise over 1 minute under stirring.
滴下終了後2時間反応させ、次いで、2.38%のテトラメチルアンモニウム硝酸塩水溶液(PH3.6)0.21gを添加し、さらに2時間攪拌後、減圧下、温浴中で生成エタノール及びプロピレングリコールモノメチルエーテルアセテートの一部を留去し、その後全量が50gになるようにプロピレングリコールモノメチルエーテルアセテートを加え、本発明のシリカ系被膜形成用組成物を作製した。 After completion of the dropwise addition, the reaction was allowed to proceed for 2 hours, and then 0.21 g of a 2.38% tetramethylammonium nitrate aqueous solution (PH3.6) was added, and the mixture was further stirred for 2 hours. A part of the ether acetate was distilled off, and then propylene glycol monomethyl ether acetate was added so that the total amount became 50 g, to prepare a composition for forming a silica-based film of the present invention.
実施例8
テトラエトキシシラン5.39g、メチルトリエトキシシラン4.21g及びビス(トリメトキシシリル)ヘキサン3.23gをプロピレングリコールモノメチルエーテルアセテート33.16gに溶解させた溶液中に、0.655%硝酸水溶液3.82gを攪拌下で1分かけて滴下した。
Example 8
In a solution of 5.39 g of tetraethoxysilane, 4.21 g of methyltriethoxysilane and 3.23 g of bis (trimethoxysilyl) hexane in 33.16 g of propylene glycol monomethyl ether acetate, a 0.655% nitric acid aqueous solution 3. 82 g was added dropwise over 1 minute under stirring.
滴下終了後2時間反応させ、次いで、2.38%のテトラメチルアンモニウム硝酸塩水溶液(PH3.6)0.21gを添加し、さらに2時間攪拌後、減圧下、温浴中で生成エタノール及びプロピレングリコールモノメチルエーテルアセテートの一部を留去し、その後全量が50gになるようにプロピレングリコールモノメチルエーテルアセテートを加え、本発明のシリカ系被膜形成用組成物を作製した。 After completion of the dropwise addition, the reaction was allowed to proceed for 2 hours, and then 0.21 g of a 2.38% tetramethylammonium nitrate aqueous solution (PH3.6) was added, and the mixture was further stirred for 2 hours. A part of the ether acetate was distilled off, and then propylene glycol monomethyl ether acetate was added so that the total amount became 50 g, to prepare a composition for forming a silica-based film of the present invention.
比較例1
テトラエトキシシラン8.59g及びメチルトリエトキシシラン6.70gをプロピレングリコールモノメチルエーテルアセテート29.97gに溶解させた溶液中に、0.644%硝酸水溶液4.53gを攪拌下で1分かけて滴下した。
Comparative Example 1
To a solution prepared by dissolving 8.59 g of tetraethoxysilane and 6.70 g of methyltriethoxysilane in 29.97 g of propylene glycol monomethyl ether acetate, 4.53 g of a 0.644% aqueous nitric acid solution was added dropwise over 1 minute with stirring. .
滴下終了後2時間反応させ、次いで、2.38%のテトラメチルアンモニウム硝酸塩水溶液(PH3.6)0.21gを添加し、さらに2時間攪拌後、減圧下、温浴中で生成エタノール及びプロピレングリコールモノメチルエーテルアセテートの一部を留去し、その後全量が50gになるようにプロピレングリコールモノメチルエーテルアセテートを加え、本発明のシリカ系被膜形成用組成物を作製した。 After completion of the dropwise addition, the reaction was allowed to proceed for 2 hours, and then 0.21 g of a 2.38% tetramethylammonium nitrate aqueous solution (PH3.6) was added, and the mixture was further stirred for 2 hours. A part of the ether acetate was distilled off, and then propylene glycol monomethyl ether acetate was added so that the total amount became 50 g, to prepare a composition for forming a silica-based film of the present invention.
比較例2
テトラエトキシシラン5.34g及びメチルトリエトキシシラン9.19gをプロピレングリコールモノメチルエーテルアセテート31.07gに溶解させた溶液中に、0.644%硝酸水溶液4.19gを攪拌下で1分かけて滴下した。
Comparative Example 2
To a solution obtained by dissolving 5.34 g of tetraethoxysilane and 9.19 g of methyltriethoxysilane in 31.07 g of propylene glycol monomethyl ether acetate, 4.19 g of a 0.644% aqueous nitric acid solution was added dropwise over 1 minute with stirring. .
滴下終了後2時間反応させ、次いで、2.38%のテトラメチルアンモニウム硝酸塩水溶液(PH3.6)0.21gを添加し、さらに2時間攪拌後、減圧下、温浴中で生成エタノール及びプロピレングリコールモノメチルエーテルアセテートの一部を留去し、その後全量が50gになるようにプロピレングリコールモノメチルエーテルアセテートを加え、本発明のシリカ系被膜形成用組成物を作製した。 After completion of the dropwise addition, the reaction was allowed to proceed for 2 hours, and then 0.21 g of a 2.38% tetramethylammonium nitrate aqueous solution (PH3.6) was added, and the mixture was further stirred for 2 hours, and then produced ethanol and propylene glycol monomethyl in a warm bath under reduced pressure. A part of the ether acetate was distilled off, and then propylene glycol monomethyl ether acetate was added so that the total amount became 50 g, to prepare a composition for forming a silica-based film of the present invention.
比較例3
メチルトリエトキシシラン13.28gをプロピレングリコールモノメチルエーテルアセテート32.86gに溶解させた溶液中に、0.644%硝酸水溶液3.64gを攪拌下で1分かけて滴下した。
Comparative Example 3
To a solution obtained by dissolving 13.28 g of methyltriethoxysilane in 32.86 g of propylene glycol monomethyl ether acetate, 3.64 g of a 0.644% aqueous nitric acid solution was added dropwise over 1 minute with stirring.
滴下終了後2時間反応させ、次いで、2.38%のテトラメチルアンモニウム硝酸塩水溶液(PH3.6)0.21gを添加し、さらに2時間攪拌後、減圧下、温浴中で生成エタノール及びプロピレングリコールモノメチルエーテルアセテートの一部を留去し、その後全量が50gになるようにプロピレングリコールモノメチルエーテルアセテートを加え、本発明のシリカ系被膜形成用組成物を作製した。 After completion of the dropwise addition, the reaction was allowed to proceed for 2 hours, and then 0.21 g of a 2.38% tetramethylammonium nitrate aqueous solution (PH3.6) was added, and the mixture was further stirred for 2 hours. A part of the ether acetate was distilled off, and then propylene glycol monomethyl ether acetate was added so that the total amount became 50 g, to prepare a composition for forming a silica-based film of the present invention.
次に、上記各実施例及び各比較例に示したサンプルの結果を表1に示す。 Next, Table 1 shows the results of the samples shown in the above examples and comparative examples.
表1において、カーボン成分量は、比較例1のカーボン量を1としたときの相対値で示す。また膜中のカーボン量ではなく、溶液段階での理論値である。 In Table 1, the carbon component amount is shown as a relative value when the carbon amount of Comparative Example 1 is 1. Further, it is not the amount of carbon in the film but the theoretical value at the solution stage.
表1に示すように、(a)成分を添加することにより、ヤング率の向上が観察される。
上記のような特性が発揮される要因は、必ずしも明らかではないが、(a)成分を加えることにより骨格の緻密度が向上するためと推測される。また機械強度向上に加え、耐湿性、耐熱性なども向上すると考えられる。
As shown in Table 1, the Young's modulus is improved by adding the component (a).
The cause of the above characteristics is not necessarily clear, but it is assumed that the addition of the component (a) improves the density of the skeleton. In addition to improving mechanical strength, it is considered that moisture resistance, heat resistance and the like are also improved.
なお、各実施例及び各比較例の層間絶縁被膜製造は下記の方法で作製し、下記に示す方法で評価を行った。 In addition, the interlayer insulation film manufacture of each Example and each comparative example was produced with the following method, and evaluated by the method shown below.
層間絶縁被膜製造
〔電気特性・膜強度測定用被膜〕
実施例1〜8及び比較例1〜3に従って製造されたシリカ系被膜形成用組成物をSiウエハ上に滴下後、回転数1,000〜3,000min−1/30秒回転塗布した。回転塗布後、250℃/3分加熱した。その後、O2濃度が100ppm前後にコントロールされている石英チューブ炉で425℃/30分間かけて被膜を最終硬化した。
Interlayer insulation coating production
[Coating for measuring electrical properties and film strength]
The composition for forming a silica-based film produced according to Examples 1 to 8 and Comparative Examples 1 to 3 was dropped onto a Si wafer, and then spin-coated at a rotational speed of 1,000 to 3,000 min −1 / 30 seconds. After spin coating, it was heated at 250 ° C./3 minutes. Thereafter, the coating film was finally cured at 425 ° C./30 minutes in a quartz tube furnace in which the O 2 concentration was controlled to around 100 ppm.
被膜評価
上記成膜方法により成膜された被膜に対して、以下の方法で被膜の電気特性及び膜強度評価を行った。
〔比誘電率測定〕
これらの被膜上にアルミニウム被膜を直径2mm、0.1μmの厚さに真空蒸着法で形成し、この試料の比誘電率をLFインピーダンスメータにて周波数10kHzで測定した。
〔弾性率測定〕
これらの被膜に対してMTS社製のナノインデンターDCMを用いて膜強度を示す弾性率を測定した。
Evaluation of coating film The coating film formed by the above-described film forming method was subjected to evaluation of electrical characteristics and film strength of the coating film by the following method.
[Specific permittivity measurement]
An aluminum film was formed on these films to a thickness of 2 mm and a thickness of 0.1 μm by a vacuum vapor deposition method, and the relative dielectric constant of this sample was measured with a LF impedance meter at a frequency of 10 kHz.
(Elastic modulus measurement)
The elastic modulus which shows film | membrane intensity | strength was measured with respect to these films using the nano indenter DCM made from MTS.
Claims (3)
(b)成分下記一般式(2)
(c)成分:前記(a)成分を溶解可能な溶媒及び
(d)成分:オニウム塩
を含有してなるシリカ系被膜形成用組成物であって(a)成分の配合割合が(b)成分1モルに対し0.01モル〜0.6モルであるシリカ系被膜形成用組成物。 (A) Component The following general formula (1)
(B) Component The following general formula (2)
(C) component: a solvent capable of dissolving the component (a) and (d) component: a composition for forming a silica-based film containing an onium salt, wherein the blending ratio of the component (a) is the component (b) A composition for forming a silica-based film that is 0.01 mol to 0.6 mol per mol.
An electronic component having the silica-based coating according to claim 3.
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JP2010090248A (en) * | 2008-10-07 | 2010-04-22 | Jsr Corp | Composition for forming silicon-containing film for multilayer resist process, silicon-containing film, and method for forming pattern |
US8273519B2 (en) * | 2006-11-21 | 2012-09-25 | Cheil Industries, Inc. | Hardmask composition and associated methods |
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US8273519B2 (en) * | 2006-11-21 | 2012-09-25 | Cheil Industries, Inc. | Hardmask composition and associated methods |
EP2095188B1 (en) * | 2006-11-21 | 2017-02-22 | Cheil Industries Inc. | Hardmask composition for processing resist underlayer film, process for producing semiconductor integrated circuit device using the hardmask composition, and semiconductor integrated circuit device produced by the process |
JP2010090248A (en) * | 2008-10-07 | 2010-04-22 | Jsr Corp | Composition for forming silicon-containing film for multilayer resist process, silicon-containing film, and method for forming pattern |
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