WO1995024639A1 - Method of evaluating siloxane used for forming insulation coating, coating fluid used for forming insulation coating, process for producing the fluid, process for forming insulation coating for semiconductor device, and process for producing semiconductor device by applying the above process - Google Patents
Method of evaluating siloxane used for forming insulation coating, coating fluid used for forming insulation coating, process for producing the fluid, process for forming insulation coating for semiconductor device, and process for producing semiconductor device by applying the above process Download PDFInfo
- Publication number
- WO1995024639A1 WO1995024639A1 PCT/JP1994/001910 JP9401910W WO9524639A1 WO 1995024639 A1 WO1995024639 A1 WO 1995024639A1 JP 9401910 W JP9401910 W JP 9401910W WO 9524639 A1 WO9524639 A1 WO 9524639A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- insulating film
- forming
- organic
- coating liquid
- siloxane
- Prior art date
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- 238000000576 coating method Methods 0.000 title claims abstract description 119
- 239000011248 coating agent Substances 0.000 title claims abstract description 117
- 238000000034 method Methods 0.000 title claims abstract description 78
- 239000004065 semiconductor Substances 0.000 title claims abstract description 48
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000009413 insulation Methods 0.000 title claims abstract description 10
- 239000012530 fluid Substances 0.000 title abstract 5
- -1 siloxanes Chemical class 0.000 claims abstract description 73
- 229910018540 Si C Inorganic materials 0.000 claims abstract description 21
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 21
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 19
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 238000011156 evaluation Methods 0.000 claims abstract description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000001788 irregular Effects 0.000 claims abstract description 8
- 125000001424 substituent group Chemical group 0.000 claims description 60
- 239000007788 liquid Substances 0.000 claims description 54
- 239000002904 solvent Substances 0.000 claims description 49
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 238000004519 manufacturing process Methods 0.000 claims description 32
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 32
- 125000004429 atom Chemical group 0.000 claims description 30
- 239000002994 raw material Substances 0.000 claims description 28
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 27
- 238000006116 polymerization reaction Methods 0.000 claims description 26
- 239000011229 interlayer Substances 0.000 claims description 21
- 238000000655 nuclear magnetic resonance spectrum Methods 0.000 claims description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 19
- CATSNJVOTSVZJV-UHFFFAOYSA-N heptan-2-one Chemical compound CCCCCC(C)=O CATSNJVOTSVZJV-UHFFFAOYSA-N 0.000 claims description 18
- 238000009835 boiling Methods 0.000 claims description 17
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 12
- 229930195734 saturated hydrocarbon Natural products 0.000 claims description 11
- 229930195735 unsaturated hydrocarbon Natural products 0.000 claims description 11
- FFWSICBKRCICMR-UHFFFAOYSA-N 5-methyl-2-hexanone Chemical compound CC(C)CCC(C)=O FFWSICBKRCICMR-UHFFFAOYSA-N 0.000 claims description 10
- 150000002894 organic compounds Chemical class 0.000 claims description 10
- 239000000047 product Substances 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 8
- MLFHJEHSLIIPHL-UHFFFAOYSA-N isoamyl acetate Chemical compound CC(C)CCOC(C)=O MLFHJEHSLIIPHL-UHFFFAOYSA-N 0.000 claims description 8
- PGMYKACGEOXYJE-UHFFFAOYSA-N pentyl acetate Chemical compound CCCCCOC(C)=O PGMYKACGEOXYJE-UHFFFAOYSA-N 0.000 claims description 8
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 7
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical group CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 claims description 7
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical group CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims description 7
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 claims description 6
- SZNYYWIUQFZLLT-UHFFFAOYSA-N 2-methyl-1-(2-methylpropoxy)propane Chemical compound CC(C)COCC(C)C SZNYYWIUQFZLLT-UHFFFAOYSA-N 0.000 claims description 6
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 6
- 239000006227 byproduct Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 235000019253 formic acid Nutrition 0.000 claims description 6
- AOGQPLXWSUTHQB-UHFFFAOYSA-N hexyl acetate Chemical compound CCCCCCOC(C)=O AOGQPLXWSUTHQB-UHFFFAOYSA-N 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 claims description 5
- SVONRAPFKPVNKG-UHFFFAOYSA-N 2-ethoxyethyl acetate Chemical compound CCOCCOC(C)=O SVONRAPFKPVNKG-UHFFFAOYSA-N 0.000 claims description 5
- HCGFUIQPSOCUHI-UHFFFAOYSA-N 2-propan-2-yloxyethanol Chemical compound CC(C)OCCO HCGFUIQPSOCUHI-UHFFFAOYSA-N 0.000 claims description 5
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 5
- AOPDRZXCEAKHHW-UHFFFAOYSA-N 1-pentoxypentane Chemical compound CCCCCOCCCCC AOPDRZXCEAKHHW-UHFFFAOYSA-N 0.000 claims description 4
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 claims description 4
- 238000004821 distillation Methods 0.000 claims description 4
- 229940117955 isoamyl acetate Drugs 0.000 claims description 4
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 claims description 3
- 239000005456 alcohol based solvent Substances 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- SBZXBUIDTXKZTM-UHFFFAOYSA-N diglyme Chemical compound COCCOCCOC SBZXBUIDTXKZTM-UHFFFAOYSA-N 0.000 claims description 3
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 claims description 3
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 claims description 2
- DRUOQOFQRYFQGB-UHFFFAOYSA-N ethoxy(dimethyl)silicon Chemical compound CCO[Si](C)C DRUOQOFQRYFQGB-UHFFFAOYSA-N 0.000 claims description 2
- 238000006467 substitution reaction Methods 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 8
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims 1
- MDLRQEHNDJOFQN-UHFFFAOYSA-N methoxy(dimethyl)silicon Chemical compound CO[Si](C)C MDLRQEHNDJOFQN-UHFFFAOYSA-N 0.000 claims 1
- 239000007858 starting material Substances 0.000 abstract description 2
- 238000010292 electrical insulation Methods 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 51
- 210000000009 suboesophageal ganglion Anatomy 0.000 description 37
- 238000005481 NMR spectroscopy Methods 0.000 description 21
- 150000002430 hydrocarbons Chemical group 0.000 description 14
- 238000010521 absorption reaction Methods 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 7
- 239000002585 base Substances 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 5
- 238000001723 curing Methods 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- 229920000642 polymer Polymers 0.000 description 5
- 230000035882 stress Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 description 4
- 229910052805 deuterium Inorganic materials 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 238000013007 heat curing Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000007872 degassing Methods 0.000 description 3
- JJQZDUKDJDQPMQ-UHFFFAOYSA-N dimethoxy(dimethyl)silane Chemical compound CO[Si](C)(C)OC JJQZDUKDJDQPMQ-UHFFFAOYSA-N 0.000 description 3
- 238000005243 fluidization Methods 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 229910000077 silane Inorganic materials 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 229910008051 Si-OH Inorganic materials 0.000 description 2
- 229910006358 Si—OH Inorganic materials 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 238000001505 atmospheric-pressure chemical vapour deposition Methods 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- XEHUIDSUOAGHBW-UHFFFAOYSA-N chromium;pentane-2,4-dione Chemical compound [Cr].CC(=O)CC(C)=O.CC(=O)CC(C)=O.CC(=O)CC(C)=O XEHUIDSUOAGHBW-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001029 thermal curing Methods 0.000 description 2
- 238000012719 thermal polymerization Methods 0.000 description 2
- LNZBSVNIMBHSAG-UHFFFAOYSA-N 1-(1,3-benzodioxol-5-yl)-2-(methylamino)hexan-1-one Chemical compound CCCCC(NC)C(=O)c1ccc2OCOc2c1 LNZBSVNIMBHSAG-UHFFFAOYSA-N 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 0 CCC(CC)CO[N+](*)(OC)OC Chemical compound CCC(CC)CO[N+](*)(OC)OC 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000004566 IR spectroscopy Methods 0.000 description 1
- 241000519695 Ilex integra Species 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013005 condensation curing Methods 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- NKDDWNXOKDWJAK-UHFFFAOYSA-N dimethoxymethane Chemical compound COCOC NKDDWNXOKDWJAK-UHFFFAOYSA-N 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000012456 homogeneous solution Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- AQBLLJNPHDIAPN-LNTINUHCSA-K iron(3+);(z)-4-oxopent-2-en-2-olate Chemical compound [Fe+3].C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O.C\C([O-])=C\C(C)=O AQBLLJNPHDIAPN-LNTINUHCSA-K 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 125000000962 organic group Chemical group 0.000 description 1
- 125000005375 organosiloxane group Chemical group 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000000992 sputter etching Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 235000001892 vitamin D2 Nutrition 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/52—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames
- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/5329—Insulating materials
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1204—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds
- C23C18/1208—Oxides, e.g. ceramics
- C23C18/1212—Zeolites, glasses
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/12—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material
- C23C18/1204—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition characterised by the deposition of inorganic material other than metallic material inorganic material, e.g. non-oxide and non-metallic such as sulfides, nitrides based compounds
- C23C18/122—Inorganic polymers, e.g. silanes, polysilazanes, polysiloxanes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/02126—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material containing Si, O, and at least one of H, N, C, F, or other non-metal elements, e.g. SiOC, SiOC:H or SiONC
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02205—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition
- H01L21/02208—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si
- H01L21/02214—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si the compound comprising silicon and oxygen
- H01L21/02216—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates the layer being characterised by the precursor material for deposition the precursor containing a compound comprising Si the compound comprising silicon and oxygen the compound being a molecule comprising at least one silicon-oxygen bond and the compound having hydrogen or an organic group attached to the silicon or oxygen, e.g. a siloxane
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- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02282—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process liquid deposition, e.g. spin-coating, sol-gel techniques, spray coating
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/312—Organic layers, e.g. photoresist
- H01L21/3121—Layers comprising organo-silicon compounds
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76801—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
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Definitions
- the present invention relates to a method for evaluating siloxanes for forming an insulating film, a coating liquid for forming an insulating film, a method for producing the same, a method for forming an insulating film for a semiconductor device, and a method for manufacturing a semiconductor device to which the same is applied.
- the present invention relates to an insulating film for flattening and electrically insulating a substrate surface having irregularities formed on a base, particularly an interlayer for flattening a wiring structure of an electronic device, for example, an LSI multilayer wiring structure and forming an insulating layer.
- the abundance ratio of the unit structure of the siloxanes particularly including an organic substituent directly bonded to a Si atom as a part of the structure.
- the present invention relates to a method for forming an insulating film for use and a method for manufacturing a semiconductor device to which the method is applied.
- a method of embedding and reducing the level difference of the base there is known a method of embedding and reducing the level difference of the base.
- ⁇ 3 -TEOS APCVD has good step coverage, but is characterized in that excellence in embedding can be obtained, for formation of the film occurs in conformer Le wiring, flat over a wide range on the substrate Is impossible.
- ⁇ 3- TEOS APCVD also has the disadvantage of different deposition rates on densely spaced interconnects with large flats and narrow spacings, so that the density of interconnects on patterns that vary Flattening is also difficult.
- CMP prior to CMP, trenches between the interconnects must be separately filled. In other words, it is necessary to combine other methods such as CVD to fill the groove.
- CMP itself has a number of major challenges, including reduced throughput, particle generation, metal-alkali contamination, instability in detecting the end point of polishing, and increased equipment costs. Has not been reached.
- high-density plasma CVD biassed HDP CVD
- a bias applied to the substrate has recently attracted attention.
- S. atsuo and ⁇ ⁇ Kiuchi Jpn. J. Appl. Phys., 22, L210 (1983), or K. Machida and H. Oikawa, J. Vac. Sci. Techno 1., B4818 (1986)
- an oxide film is deposited while anisotropically etching the substrate surface using argon, and the plasma source used here is ECR or ICP with a high plasma ion density. used.
- the spin-on-one-glass method (SPIN ON GLASS: SOG method) introduced in Applied Physics Vol. 57, No. 12 (1989), etc.
- the method of forming an insulating film with a cloth and alleviating unevenness of a base is widely and generally used in semiconductor device manufacturing.
- the LS I multilayer wiring interlayer insulating film cured film of S I_ ⁇ 2 quality by SO G method is generally used.
- S_ ⁇ G is Origoshirano Ichiru or solution was applied by a spin Isseki a on a substrate comprising Origoshiriketo such a technique to form a cured film of S i 0 2 quality by thermal curing or insulating film formed by the method, Alternatively, it refers to a coating solution for forming an insulating film. Since the SOG coating solution has the property of flowing into the narrow grooves between the wirings, the formed film is well embedded in the grooves between the wirings, and at the same time, flows into the wide flat recesses. It also has the feature that it can flatten wide and high steps. Since the SOG process is performed at a low temperature of about 400 ° C, it is used as an interlayer insulating film after A1 wiring, which is easily damaged by heat.
- inorganic S ⁇ G represented by the general formula Si (OR) beaut(OH) 4 -n, which does not contain any organic substituent bonded to Si
- Si (OR) beaut(OH) 4 -n which does not contain any organic substituent bonded to Si
- Inorganic SOG undergoes volume shrinkage of about 20% during heat curing, so it has poor crack resistance, and can be applied only at most about 200 to 30 Onm in a single application.
- SOG thickly at least as high as the wiring height.
- S ⁇ G could not be used for flattening steps or turns with large cross-sectional aspect ratios.
- Inorganic substituents directly bonded to Si to eliminate the above-mentioned disadvantages of inorganic S ⁇ G and improve film shrinkage, flatness, etching rate, adhesion, and crack resistance
- organic S ⁇ G represented by the general formula R m S i (OR) n (OH) 4 - compassion- m having organic S i in the chemical structure was studied and developed.
- Other types of organic substituents, such as the phenyl group are mainly used because of their relationship with thermal stability, degassing properties, plasma resistance, film yield value and film flexibility. is also.
- the area on the substrate where the flattening effect is exhibited by the flow of the coating solution is said to be local at most on the order of 10 m.
- the film thickness on the convex portion on the wide wiring becomes almost the same. In other words, when viewed from a field of view of the order of 10 / m or more, the step between the concave portion and the convex portion is not reduced at all.
- the organic SOG since the formed film thickness has a dependency on the density of the wiring pattern, the organic SOG is ineffective for flattening a wide area at the chip Z level.
- Organic S ⁇ G also undergoes volume shrinkage of at least about 7% during heat curing, and cracks may occur due to shrinkage stress, similar to inorganic SOG, when a coating with a thickness of 500 nm or more is formed.
- Organic SOG has poor film quality and easily contains or absorbs water, so problems are likely to occur due to degassing from SOG in later processes. Water also has various difficult problems, such as an increase in the apparent dielectric constant, and hence an increase in the delay due to the line capacitance, which is disadvantageous as an insulating film for high-speed wiring.
- one methyl group (or phenyl group) is bonded to each Si, and a regular ladder-like structure is formed.
- Ladder siloxane has a high degree of regularity in its structure, and thus has the characteristic of melting and flowing like a crystal due to heating.However, thick coating is not possible due to its large shrinkage and very poor crack resistance. In addition, it has a fatal drawback in that it is poor in structurally active hydroxyl groups (Si-OH), has poor adhesion to the underlayer, and is prone to peeling.
- Si-OH structurally active hydroxyl groups
- inorganic SOG using hydrogen siloxane oligomer or perhydrosilazane oligomer as a raw material is also known. These new SOGs are characterized by having no organic groups directly bonded to Si in the structure, but instead having hydrogens directly bonded to Si.
- siloxanes are extracted as they are or in an appropriate organic solvent, and infrared spectroscopy, nuclear magnetic resonance (NMR), plasma-induced coupled emission
- NMR nuclear magnetic resonance
- plasma-induced coupled emission There is known a method of performing analysis by a spectroscopic analysis method (see Japanese Patent Application Laid-Open No. 414/347).
- a method of detecting and quantifying a decomposition product generated by chemically decomposing siloxanes see Japanese Patent Publication No. 62-81646).
- all of these methods aim at measuring the total Si content in the material.
- a coating liquid for forming an insulating film, a method for manufacturing the same, and a method for forming an insulating film for a semiconductor device which can sufficiently improve the film properties of an insulating film of a semiconductor device, particularly an interlayer insulating film for LSI multilayer wiring, have been desired.
- Disclosure of the invention is a coating liquid for forming an insulating film, a method for manufacturing the same, and a method for forming an insulating film for a semiconductor device, which can sufficiently improve the film properties of an insulating film of a semiconductor device, particularly an interlayer insulating film for LSI multilayer wiring, have been desired.
- the present invention has been made in view of the above-mentioned problems of the related art, and has been made in order to form an insulating film having excellent film characteristics, particularly, an interlayer insulating film.
- an insulating film having excellent film characteristics, particularly, an interlayer insulating film.
- an insulating film that does not contain water and has a low dielectric constant and is advantageous for high-speed wiring that is, an insulating film having excellent film characteristics, in particular, an interlayer insulating film for semiconductor devices, which can be used for forming an insulating film using siloxanes. It is an object of the present invention to provide a coating solution for use and a method for manufacturing the same, particularly a method for forming a semiconductor device and a method for manufacturing a semiconductor device to which the method is applied.
- the present inventors have studied the characteristics of siloxanes and interlayer insulating films for LSI multilayer wiring using the same.
- the content ratio of organic substituents in siloxanes or the abundance ratio of Si atoms with different numbers of bound organic substituents that is, the abundance ratio of unit structures of siloxanes.
- La a result of intensive studies, it is possible to evaluate the organic nature S_ ⁇ _G from the signal integral value of 29 S i one NMR scan Bae spectrum, according to the evaluation,
- the inventors have found that an insulating film having excellent film characteristics can be formed by using the obtained organic SOG coating solution, and have led to the present invention.
- the first embodiment of the present invention is directed to evaluating siloxanes containing Si atoms bonded to at least one kind of organic substituent contained in a coating liquid for forming an insulating film.
- the presence ratio of at least one of three Si atoms having one to three organic substituents bonded to two Si atoms and at least one Si atom not bonded to the organic substituent is analyzed.
- the present invention provides a method for evaluating siloxanes for insulating film formation, for example, siloxanes for forming insulating film, characterized by determining the content ratio of organic substituents based on the abundance ratio and evaluating the organicity thereof. is there.
- the presence ratio of the number of different S i atom of an organic substituent the binding, 2 9 S i arbitrariness is the is favored determined using the integral value of the signal one NMR scan Bae spectrum.
- the siloxanes containing Si atoms bonded to at least one kind of organic substituent are siloxanes for forming an interlayer insulating film for LSI multilayer wiring represented by the following formula [1].
- k, 1, m, n: 0R Indicates an integer of RSII to 1000.
- R at least one organic substituent selected from a saturated hydrocarbon group, an unsaturated hydrocarbon group, and a phenyl group, which may be the same or different, and the phenyl group has a substituent Or a phenyl group.
- the oxygen atom binds to any of Si, R, and H.
- R represents at least one organic substituent selected from a saturated hydrocarbon group, an unsaturated hydrocarbon group, and a phenyl group.
- the phenyl group may be a phenyl group having a substituent.
- the siloxanes containing a Si atom bonded to at least one kind of organic substituent are preferably siloxane oligomers. Number of repetitions of the unit structure of the siloxane oligomer [k + l + m + n] Is preferably 2 to 500.
- a second aspect of the present invention is a coating liquid for forming an insulating film used for manufacturing a semiconductor device, wherein the coating liquid contains a Si atom bonded to at least one kind of organic substituent represented by the following formula [1]:
- the content ratio X represented by the following formula [2] obtained from the integrated value of the signal of the 29 Si-NMR spectrum of the siloxane that satisfies the following formula [2]
- An object of the present invention is to provide a coating liquid for forming an insulating film, characterized by containing siloxanes.
- k, l, m, n represent an integer of 0 to 1,000.
- R represents at least one organic substituent selected from a saturated hydrocarbon group, an unsaturated hydrocarbon group, and a fuunyl group, which may be the same or different, and having a substituent as the phenyl group. It may be a phenyl group.
- the oxygen atom binds to any of Si, R, and H.
- Ao 29 obtained from S i-NMR spectrum, no S i-C bond The area of the Si signal attributable to Si,
- a 2 Area of Si signal assigned to Si having two Si—C bonds, determined from 29 Si—NMR spectrum
- a 3 The area of the Si signal assigned to Si having three Si—C bonds, which is determined from the 29 Si—NMR spectrum.
- the Si having no Si-C bond is represented by the following structural units (c), (a), (b), and (d).
- R represents at least one organic substituent selected from a saturated hydrocarbon group, an unsaturated hydrocarbon group, and a phenyl group; And the phenyl group may be a phenyl group having a substituent.
- the siloxanes are preferably siloxane oligomers.
- the degree of polymerization represented by the number [k + l + m + n] of repeating the unit structure of the siloxane oligomer is preferably from 2 to 500.
- the present invention provides the coating liquid for forming an insulating film, wherein the siloxane is dissolved in a solvent having a boiling point of not less than 120 ° C. and not less than 200 ° C. and containing the following organic compound as a main component.
- An object of the present invention is to provide a coating liquid for forming an insulating film.
- a third aspect of the present invention is a coating liquid for forming an insulating film used for manufacturing a semiconductor device, wherein a composition formula (CH 3 ) y S i 0 2 .2 / y (where y is 0.8 to 1.3) and a methylsiloxane oligomer having an irregular structure having a weight average molecular weight of from 1500 to 600 and a boiling point of from 120 to 200 ° C. It is intended to provide a coating liquid for forming an insulating film, wherein the coating liquid is dissolved in a solvent containing an organic compound at a temperature of not more than ° C as a main component.
- the solvent preferably has a viscosity of not more than 2.0 cP at 25 ° C., ethylene glycol monoethyl ether, ethylene glycol monoisopropyl ether, propylene glycol monomethyl ether, ethylene glycol Glycol monoethyl ether acetate, methylene glycol dimethyl ether, di-n-butyl ether, diisobutyl ether, di-n-amyl ether, methyl n-amyl ketone, methyl isoamyl ketone, n-amyl acetate, isoamyl acetate and n-acetic acid It is preferably at least one member selected from the group consisting of hexyl.
- a compound selected from the group consisting of tetraalkoxysilane, methyltrialkoxysilane and dimethyldialkoxysilane or a mixture of two or more thereof is used as a raw material.
- molar concentration of CH 3 is formulated so that the following 1 3 0% 80% or more of the molar concentration of S i of raw whole, to the 2 to 4-fold molar amount of water was added, the organic carboxylic acid catalyst Above 30 ° C and below 80
- the solvent is diluted by heating to a concentration of 1.20 ° C., and a solvent containing an organic compound having a boiling point of at least 120 ° C. and at most 200 ° C.
- An object of the present invention is to provide a method for producing a coating liquid for forming an insulating film, which comprises distilling off water and alcohol as a by-product of a polymerization reaction by distillation under reduced pressure.
- the tetraalkoxysilane is tetramethoxysilane and Z or tetraethoxysilane
- the methyltrialkoxysilane is methyltrimethoxysilane and / or methyltriethoxysilane
- the dimethyldialkoxysilane is It is preferable that the organic carboxylic acid is at least one selected from the group consisting of formic acid, acetic acid, and succinic acid, and the concentration of the organic carboxylic acid is determined by the concentration of the starting material. Preferably, it is 0 mol.
- an alcohol-based solvent having a molar ratio of 0.2 to 3 times the amount of the raw material prior to the polymerization reaction. It is preferably at least one selected from the group consisting of methanol, ethanol, and dioxane.
- the solvent preferably has a viscosity of 2.5 OcP or less at 25 ° C, and the solvent is ethylene glycol monoethyl ether, ethylene glycol monoisopropyl ether, propylene glycol monomethyl ether.
- a method in which, after applying the coating solution for forming an interlayer insulating film on a wiring pattern having a stepped uneven surface on a silicon substrate, the coating solution is dried and then dried. Temperature is kept at a temperature of at least 300 ° C and at most 300 ° C for at least 30 seconds to fluidize, and further cured at 350 ° C to 450 ° C in nitrogen to form an insulating film.
- An object of the present invention is to provide a method for forming an insulating film for a semiconductor device, characterized by being formed.
- the present invention provides a method for manufacturing a semiconductor device to which the method for forming an insulating film for a semiconductor device is applied.
- Figure 1 is a 2 3 S i-NMR spectrum of sample A used in Example 1 (see Table 1).
- FIG. 2 is a graph showing the relationship between X defined by the equation [2] in Example 2 and the contraction rate, relative dielectric constant, and water absorption of the insulating film.
- FIGS. 3 (1), (2) and (3) are parts respectively showing a wiring layer pattern forming step, a CVD oxide film forming step and an insulating film forming step in the manufacture of an insulating film for a semiconductor device according to the present invention. It is a cross section schematic diagram.
- FIG. 4 is a schematic cross-sectional view of a step portion of an insulating film showing a method for obtaining D 0 P, which is a measure of flatness measured in Example 3.
- a method for forming an insulating film for a semiconductor device for example, an insulating film forming coating solution used for forming an interlayer insulating film for an LSI multilayer wiring or the like.
- the siloxanes containing i atoms are analyzed for the abundance of at least one Si atom having a different number of organic substituents bonded thereto, and thereby, or based on this, e.g.
- This is a method in which the content ratio of an organic substituent is determined, and thereby the siloxanes, for example, their organic properties are evaluated.
- the presence ratio and the content ratio is a method of evaluating organic.
- the solution containing siloxanes used in the present invention is a precursor for forming an insulating film for a semiconductor device (hereinafter simply referred to as an insulating film).
- a coating liquid is a precursor for forming an insulating film for a semiconductor device (hereinafter simply referred to as an insulating film).
- Any solution may be used as long as it is a solution of siloxanes containing a Si atom bonded to at least one kind of organic substituent or a solution of such siloxanes in an organic solvent.
- a 30% solution for forming a 30% film, or an organic SOG solution can be cited.
- the organic substituent may be a saturated hydrocarbon group, an unsaturated hydrocarbon group, and / or a phenyl group, or may contain two or more kinds. Further, the number of organic substituents bonded to one Si atom may be any of 1 to 3.
- siloxanes used in the present invention can be represented by the following formula [1], but the manner of bonding these unit structures is not particularly limited, and either a linear type or a branched type may be used. But it is good. Further, these may be used as a mixture.
- k, l, m, and n represent integers of 0 to 1,000.
- R represents at least one organic substituent selected from a saturated hydrocarbon group, an unsaturated hydrocarbon group, and a phenyl group, and may be the same or different, and the phenyl group has a substituent It may be a phenyl group.
- the oxygen atom is bonded to any of Si, R, and H.
- siloxanes examples include silo used for the purpose 1 of forming an insulating film.
- the repeating number [k + 1 + m + n] of the following unit structures (a) to (d) of the siloxane oligomer represented by the above formula [1] is more preferably in the range of 2 to 500.
- the degree of polymerization (number of repetitions) exceeds 500, the viscosity of the coating solution (SOG solution) composed of siloxane and a solvent becomes too high, and if it is less than 2, siloxane is easily evaporated in the insulating film forming step. In either case, it is difficult to form an insulating film.
- R represents at least one organic substituent selected from a saturated hydrocarbon group, an unsaturated hydrocarbon group, and a phenyl group, and may be the same or different.
- the phenyl group may be a phenyl group having a substituent.
- the content ratio of the organic substituents of the siloxanes is analyzed, or Si atoms having different numbers of organic substituents bonded (Si-C bonds).
- An Si atom having a number of 0 to 4 that is, at least one of the unit structures (a) to (d) is analyzed, and the abundance ratio is measured.
- the method of analyzing the content ratio of the organic substituents of the siloxanes used in the present invention or the method of measuring the abundance ratio of the above unit structures (a) to (d) are not limited, but a nuclear magnetic resonance (NMR) method is used. Is preferred. More preferably, such proportions are that determined from the integral value of the signal of 2 9 S i-NMR scan Bae spectrum preferred.
- NMR nuclear magnetic resonance
- a siloxane solution as a sample for example, a SOG solution is dissolved in a deuterium solvent.
- the deuterium solvent used here is not particularly limited as long as the components in the SOG solution are not separated from the solution by adding the deuterium solvent, and examples thereof include heavy-mouthed form, heavy acetone, and heavy methanol. Can be used. If the concentration of the sample is too low, sufficient detection sensitivity cannot be obtained, and if it is too high, the ratio of the deuterium solvent decreases, and the frequency stability of the NMR apparatus becomes poor, so that 10 to 90% is preferable.
- Sample tube used in the 2 9 S i-NMR measurement is preferably made of Teflon. This is usually a glass NMR sample tube in order to avoid that a signal 2 3 S i resulting from gay acid breaking glass current.
- a relaxation agent such as tris (acetylacetonato) chromium (III) or tris (acetylacetonato) iron (III) for shortening the measurement time.
- the respective signals of the 29 Si NMR spectrum obtained by the measurement were assigned, and the abundance ratio of the unit structures (a), (b), (c) and (d) or the organic Determine the ratio of Si atoms bonded to the substituent.
- A is the area of the Si signal assigned to Si having no Si-C bond.
- the area of the Si signal attributed to Si having one Si-C bond is A
- the area of the Si signal attributed to Si having two Si-C bonds is A 2
- organic measure represented by X
- Formula [3] is a formula representing the ratio of the number of organic substituents to the number of Si atoms in the siloxane
- Formula [4] is a formula representing the ratio of the number of organic Si atoms to the number of Si atoms in the siloxane. is there.
- the form of the formula for evaluating organicity can be defined without being limited to the above formulas [3] and [4], depending on the purpose of the analysis.
- the second to fifth aspects of the present invention are for forming an insulating film for a semiconductor device using siloxanes, for example, an interlayer insulating film for LSI multilayer wiring (hereinafter simply referred to as an insulating film) based on the above evaluation method. And a method for forming an insulating film using the same.
- a coating liquid according to a second embodiment of the present invention and a method for forming an insulating film using the coating liquid will be described.
- the present inventors have found that there is a close relationship between the chemical structure of siloxanes and the characteristics of the SOG film.
- siloxanes preferably siloxane oligomers, in which the following abundance X obtained from the integrated value of the 29 Si-NMR spectrum signal of the siloxane represented by the above formula [1] satisfies the following formula [2]: It has been found that when a coating solution containing is used, the characteristics of the formed insulating film are excellent.
- Ai Area of Si signal assigned to Si with one Si—C bond, determined from 29 Si—NMR spectrum
- a 2 29 Si—area of Si signal assigned to Si with two Si—C bonds, determined from NMR spectrum
- a 3 Area of Si signal assigned to Si with three Si—C bonds, determined from 29 Si—NMR spectrum
- the reason why the properties of the insulating film are excellent when a coating solution containing siloxanes whose content ratio represented by the above formula [2] is 80% or more is used is as follows: (1) The water absorbing property is reduced. As a result, the outgassing amount and dielectric constant can be kept low, (2) the crack resistance is improved, so that pressure coating is possible, and (3) the dry etching rate is reduced, so that the etch back margin can be widened. That, and the like. Next, the coating liquid for forming an insulating film according to the third embodiment of the present invention will be described.
- the coating liquid of the present embodiment is one in which the above-described evaluation of the organic measure is performed by the above formula [3].
- a third aspect of the present invention formula (CH 3) y S i 0 2. 2 / y weight average molecular weight (the y in equation 0.8 or 1.3 or less) is represented by 1500 to 6000
- An object of the present invention is to provide a coating liquid characterized by dissolving a methylsiloxane oligomer having the following irregular structure in a solvent containing an organic compound having a boiling point of not less than 120 ° C and not more than 200 ° C as a main component.
- this coating liquid is characterized in that the value of y in the composition formula is 0.8 or more and 1.3 or less, It is characterized by having an irregular structure with respect to a ladder siloxane having an ordered structure.
- the shrinkage of the methylsiloxane oligomer during thermal polymerization and curing is almost eliminated. Can be eliminated. Therefore, thick coating can be performed, and it works for flatness.
- the water absorption of the methylsiloxane oligomer can be reduced to almost zero, and the dielectric constant can be reduced to 3.5 or less.
- a characteristic of forming a SOG film that is advantageous to When the value of y is less than 0.8, characteristics similar to those of ordinary organic S ⁇ G are exhibited, and the shrinkage, water absorption, flattening performance, and dielectric constant are only those within the range of the prior art. I can't get it. If y exceeds 1.3, thermal polymerization becomes difficult, and a film is not formed, resulting in a rubber-like material. Therefore, the upper limit of y was set to 1.3.
- the problem of reduced adhesion due to an increase in y is solved by making the siloxane skeleton an irregular structure, defining the molecular weight, and defining the solvent.
- the irregular structure With the introduction of the irregular structure, a large amount of Si 10 H terminus contributing to adhesion is incorporated into the oligomer structure, and the S i-0-S i network structure becomes sparse, so the film is made soft. It is thought that increasing the ability to absorb stress contributes to improving the adhesion.
- an appropriate parameter for defining an irregular structure has not yet been found, it is estimated that conventional organic SOG tends to have a regular structure even if y is increased, and has poor adhesion. You.
- Molecular weight is also less than 1500
- the volume shrinkage during polymerization is remarkable, so that internal stress is likely to be generated, which causes cracking and cracking.
- unevenness in drying speed causes in-plane unevenness, resulting in uneven coating, resulting in excessive force and stress due to drying. Has a negative effect.
- the reason for limiting the weight average molecular weight of the methylsiloxane oligomer to 1500 to 600 is that, besides solving the problem of adhesion, a continuous coating film of less than 1500 is not formed, On the other hand, if it exceeds 600, the viscosity of the coating solution becomes too high, and radial coating unevenness called striation occurs. Most preferably, the weight average molecular weight is from 150 to 350.
- a solvent for dissolving the methylsiloxane oligomer a solvent containing an organic compound having a boiling point of at least 120 ° C and at most 20 (TC or less is used. If the boiling point is less than 120 ° C, the Since most of the solvent is volatilized by the rotation, flattening cannot be achieved due to sufficient flow of the coating solution, and the reduction in adhesion due to the stress generated by drying becomes a problem as described above. If the temperature exceeds 200 ° C., the drying is remarkably slowed down, the throughput is reduced, and defects are generated during the transfer of the substrate, and foaming and carbon residue are generated during the heating step, so that it cannot be used. Suitable solvents have a boiling point range between 130 and 160 ° C.
- the viscosity of the solvent has a significant effect on the embedding performance of fine grooves and the uniformity of the coating film.
- a solvent having a viscosity of not more than 2.0 cP at 25 ° C. is used.
- the viscosity of the solvent is greater than 2.0 cP, the groove of 0.2 m or less will be incompletely embedded, and the coating will have a radial shape from the center of the substrate to the periphery, which is called striation. Frequent occurrence of uneven thickness caused by stripes Go up.
- Solvents satisfying the requirements of the present invention include ethylene glycol monoethyl ether, ethylene glycol monoisopropyl ether, propylene glycol monomethyl ether, ethylene glycol monoethyl ether acetate, ethylene glycol dimethyl ether, di-n-butyl ether, Dibutyl ether, di-n-amyl ether, methyl n-amyl ketone, methyl isoamyl ketone, n-amyl acetate, isoamyl acetate, n-hexyl acetate and the like can be used. These solvents can be used alone or in combination of two or more.
- the proportion of the solvent having a boiling point other than 120 ° C. or more and not more than 200 ° C. is preferably not more than 50% of the total volume of the solvent. It is needless to say that the solvent described above may be used for dissolving the siloxanes in the coating liquid of the second embodiment of the present invention.
- the organic SOG coating liquid having such characteristics can be prepared by the method for producing a coating liquid according to the fourth aspect of the present invention. That is, a compound such as alkoxysilane or alkylalkoxysilane, in particular, one compound selected from the group consisting of tetraalkoxysilane, methyltrialkoxysilane and dimethyldialkoxysilane, or a mixture of two or more compounds is used as a raw material. i- CH 3 is mixed so that the molar concentration of CH 3 is 80% or more and 130% or less of the molar concentration of Si in the whole raw material, and 2 to 4 times the molar amount of water is used to catalyze the organic carboxylic acid.
- a compound such as alkoxysilane or alkylalkoxysilane in particular, one compound selected from the group consisting of tetraalkoxysilane, methyltrialkoxysilane and dimethyldialkoxysilane, or a mixture of two or
- the polymerization product is heated to a temperature of 40 ° C or higher and 80 ° C or lower to polymerize, and the polymerization product is diluted by adding a solvent containing an organic compound having a boiling point of 120 ° C or higher and 200 ° C or lower as a main component, followed by dilution.
- the liquid is distilled under normal pressure or reduced pressure to distill off water and alcohol as by-products of the polymerization reaction.
- Tetramethoxysilane (Si (OCH 3 ) 4 ) and tetraethoxysilane (Si (OC 2 H 5 ) 4) are generally used as tetraalkoxysilane.
- methyltrialkoxysilane methyltrimethoxysilane (CH 3 S i (OCH 3) 3) or methyltriethoxy silane (CH 3 S i (OC 2 H 5 ) 3) is generally used.
- dimethyldialkoxysilane dimethyldimethoxysilane ((CH 3 ) 2 S i (0 CH 3 ) 2) and dimethyl ethoxy silane ((CH 3 ) 2 S i (OC 2 H 5 ) 2) are used.
- This value in the coating liquid of the third aspect of the present invention, equal to the value of y when representing the formula of methylsiloxane oligomer (CH 3) y S i 0 2. 2 / y. That is, y in the equation needs to be 0.8 or more and 1.3 or less.
- the methylsiloxane oligomer to be formed has a formula: (CH 3 ) y Si 0 Since y when expressed as 2.2 / y is less than 0.8, desired characteristics cannot be exhibited for the reasons described above.
- the molar concentration of Si—CH 3 contained in the compounded or single raw material exceeds 130%, the y of the similarly generated methyl siloxane oligomer exceeds 1.3, and a cured film is formed for the reason described above. Not done.
- the concentration of the organic acid as a catalyst is not particularly limited since it does not significantly affect the structure or state of the product, but if the concentration is too high, the solution tends to be acidic and the stability of the coating solution is affected, so it is possible.
- the concentration should be as low as possible, preferably about 1 to 1000 moles, or about 1 to 100 moles, of the raw material.
- Inorganic acids other than organic acids, such as hydrochloric acid and phosphoric acid, are not used because they affect metals on the coated substrate.
- the mixture After the addition of water, the mixture is generally incompatible, so it is necessary to continue mixing vigorously using a stirrer or the like. Within several minutes to several hours, alcohol, which is a byproduct of the hydrolysis reaction, is formed, and the hydrophilicity of the polymer is increased, so that the polymers become compatible.
- a solvent such as an alcohol can be added to dilute the solution in advance.
- a solvent to be added for this purpose methanol, ethanol, dioxane or the like is used in an amount of about 0.2 to 3 moles of the raw material.
- the mixture is heated to a temperature of 30 ° C or more and 80 ° C or less.
- Formulation through alone raw material S i one CH 3 molar concentration is relatively small molar concentration y of S i of the entire raw les included, at a low temperature when, also y is relatively large les, time and a high temperature It is preferable to carry out polymerization.
- the heating temperature is lower than 30 ° C., the polymerization rate is extremely reduced, and a polymer having a desired molecular weight cannot be obtained. If the heating temperature exceeds 80 ° C, it is difficult to control because the by-product alcohol boiling power s' occurs and polymerization occurs very rapidly. In general, it is preferable that the reaction be carried out at a temperature of about 50 ° C, sealed and stored in a thermostat.
- the time required for the reaction is not particularly limited as a force depending on the temperature, and an appropriate time may be selected from about 4 to 120 hours while measuring the molecular weight.
- an appropriate time may be selected from about 4 to 120 hours while measuring the molecular weight.
- alcohol as a by-product
- solvent for dilution when added, coexist with the solvent. It is necessary to remove this, but if it is distilled or dried as it is, the concentration of methylsiloxy sigo ligomer will increase rapidly, and the polymerization reaction rate will increase at an accelerated rate, resulting in a gel with a molecular weight of several hundred thousand or more.
- the main solvent used for dilution that is, a solvent mainly composed of an organic compound having a boiling point of 120 ° C or higher and 200 ° C or lower is added in advance and diluted, and the diluent is used as it is. It is necessary to perform distillation under normal pressure or reduced pressure. As a distillation condition, it is important to select a temperature and pressure at which water, alcohol and solvent are distilled off but the main solvent is not distilled.
- the same solvent as that used in the coating solution of the third embodiment of the present invention is used. It goes without saying that it can be used.
- the solution of the methylsiloxane oligomer from which the water alcohol and the solvent have been removed in this way is used as it is, or after adding an appropriate solvent and, if necessary, performing operations such as filtration and aging, to obtain a coating solution. be able to.
- the semiconductor device according to the fifth aspect of the present invention using the coating liquid according to the third aspect of the present invention and / or the coating liquid according to the second aspect of the present invention prepared by the manufacturing method according to the fourth aspect of the present invention.
- the method of forming the insulating film for use is such that the coating liquid of the second and / or third aspect of the present invention is applied to a wiring pattern formed on a silicon substrate and having a stepped uneven surface, followed by drying. , At a temperature of 150 ° C or more and 300 ° C or less, fluidized by holding for 30 seconds or more, and further cured in nitrogen at a temperature of 350 ° C or more and 450 ° C or less. To form an insulating film.
- a semiconductor device having an insulating film having excellent film characteristics, particularly an interlayer insulating film in the present invention can be manufactured.
- the self-fluidization temperature of the SOG of the present invention is at a temperature of 150 ° C. or more and 300 ° C. or less.
- the most significant feature is that the self-flow flattening is completed at a temperature of 150 ° C or more and 300 ° C or less for 30 seconds or more. That is, the coated and dried film is fluidized again in this temperature range, and high flatness over a wide area can be obtained.
- the subsequent process is nothing but the usual process called SOG cure.
- FIG. 1 One example of the obtained 29 Si-NMR spectrum is shown in FIG. From the area of each signal shown in FIG. , A,, ⁇ 2 , and A 3 were determined.
- the peak area in FIG. 1 is proportional to the number of Si atoms in the corresponding unit structure.
- the sum of a plurality of peak areas shown in the figure is used.
- the results of calculating the organic substituent content ratio defined by the formula [3] are shown in Table 1. It is shown in
- R is a methyl group.
- 29 Si-NMR is measured, so that it is not possible with the conventional method.
- the possible abundance ratio of each unit structure can be determined. For example, the abundance ratio of the unit structures (a), (b), (c) and (d) in organic S ⁇ G and the content of organic substituents The ratio can be easily determined.
- methyltrimethoxysilane and tetramethoxysilane were dissolved in methanol in the proportions shown in Table 2, and 0.02 mol of water and formic acid in the proportions shown in Table 1 were added thereto.
- the polymerization reaction was performed at 24 ° C. for 24 hours.
- a 1: 1 mixture of benzene and ethylene glycol monoethyl ether (650 ml) was added to the product, and the mixture was distilled under reduced pressure to remove excess methanol and water, thereby preparing a coating solution having a solid content of about 20% by weight. .
- the weight-average molecular weight of the siloxane oligomer contained in this coating solution was measured by gel permeation chromatography and was found to be about 3,000, which corresponded to a degree of polymerization of 40 to 50. .
- This coating solution was spin-coated on a 6 inch diameter silicon wafer at a rotation speed of 3, 000 rpm, and 60 seconds at 150 ° C, 200 ° C, and 250 ° C, respectively.
- the coating was heated and then heated at 400 ° C. for 30 minutes in a nitrogen stream to prepare a coating solution.
- Table 2 and FIG. 2 show the measurement results of the shrinkage, the dielectric constant, and the water absorption of this film together with the value of X in the equation [2].
- an A1 electrode of about 3 mm square was deposited using a metal mask, and the edge of the film was etched with dilute hydrofluoric acid to remove the entire lower part.
- the capacitance between the surface A1 and the vapor-deposited A1 film was measured and determined from the electrode area and the film thickness.
- the water absorption was determined by leaving the cured film in a clean room for 24 hours and measuring the water contained in the film using an electrolytic cell moisture analyzer (MEA (Moisture Evaluation Analyzer, DuPont)). It was measured by measuring the amount of generated water up to 0 ° C.
- MEA Electrolytic cell moisture analyzer
- a coating liquid for forming SOG of the present invention was manufactured by the following procedure.
- the mixing ratios of the raw materials, synthesis conditions, typical physical properties of the film, and the like are also listed in Tables 3 and 4 for their deviations.
- Table 3 shows the combinations of the three types of raw materials, and Table 4 shows the data when the various synthesis conditions were changed.
- Tables 3 and 4 also show the measured data. The detailed description of the measurement method is described below.
- the measured film properties are the same in Tables 3 and 4.
- those outside the scope of the present invention were marked with * in front of the number, and used as comparative examples for comparison.
- This coating solution is spin-coated on a 6-inch diameter silicon wafer at a rotation speed of 300 rpm, baked at 150 ° C, 200 ° C, and 250 ° C for 60 seconds each, and then in a nitrogen stream. Heating was performed at 400 ° C for 30 minutes to form a coating film.
- Table 3 shows the measurement results of the shrinkage, the dielectric constant and the water absorption of this film together with the value of y in the following composition formula 1.
- FIG. 3 is a partial cross-sectional view showing a manufacturing process of the insulating film according to the present invention.
- a wiring layer having a thickness of 1.2 ⁇ m is formed on the semiconductor substrate 1 on which the desired processing has been performed, and then the wiring layer is patterned to form a wiring layer having a wiring width of 1 ⁇ m.
- the distance between the wiring patterns 2 and 3 was 3 m.
- a plasma CVD method based on tetraethoxysilane (TEOS) is applied to the entire surface of the semiconductor substrate 1 and the wiring patterns 2 and 3 obtained in the step shown in FIG. 3 (1).
- TEOS tetraethoxysilane
- the SiO 2 layer 4 was formed with a thickness of 300 nm.
- This CVD oxide film 4 could not bury trenches between wirings because the step coverage was good and the film was formed along the shape of the base (step).
- 0 is the slope of the step of the insulating film 8 caused by the wiring 7 as shown in FIG. 2, d. Is the height difference of the insulating film 8, and d m is the thickness of the wiring 7.
- the evaluation method of the present invention in the analysis of the content ratio of the organic substitution group of the organosiloxane, the abundance ratio for each unit structure, which was impossible with the conventional method, can be obtained.
- the content ratio of the organic substituent in the organic siloxane can be easily determined.
- the present invention can be used, for example, for evaluating the organicity of siloxanes in a solution containing an organic siloxane used for forming an insulating film of a semiconductor device, particularly, an interlayer insulating film for LSI multilayer wiring.
- film properties such as chemical resistance and water resistance of the insulating film can be predicted in advance.
- a coating solution containing the siloxanes of the present invention particularly a methylsiloxane oligomer, it becomes possible to form an insulating film for a semiconductor device having excellent film properties, for example, an interlayer insulating film for an LSI multilayer wiring.
- an insulating film having excellent film characteristics that is, uniform flatness of the entire underlying pattern can be achieved, and fine grooves are completely filled.
- Insulation film, especially for semiconductors, which has excellent crack resistance, can be applied thick enough to flatten the underlying steps, and does not contain water, has a low dielectric constant, and is advantageous for high-speed wiring
- An interlayer insulating film for a device can be formed.
- a coating liquid exhibiting the above-mentioned effects can be produced reliably and stably. Further, according to the method of manufacturing a semiconductor device of the present invention, it is possible to reliably and stably obtain a semiconductor device having the above-described interlayer insulating film having excellent film characteristics.
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Description
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Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95900290A EP0701121A4 (en) | 1994-03-11 | 1994-11-11 | ASSESSMENT PROCESS FOR PRODUCING INSULATION COATING USED Siloxanes COATING LIQUID USED FOR THE PRODUCTION OF INSULATION COATING, PROCESS FOR PRODUCING THE LIQUID, METHOD FOR PRODUCING THE ISOLATION COATING FOR SEMICONDUCTOR ELEMENTS AND METHOD FOR PRODUCING SEMICONDUCTOR DEVICES BY THE APPLICATION OF THE ABOVE PROCEDURES |
KR1019950705032A KR960702610A (ko) | 1994-03-11 | 1994-11-11 | 절연막 형성용 실록산류의 평가방법, 절연막 형성용 도포액 및 그 제조방법 및 반도체장치용 절연막의 형성방법 및 이것을 적용하는 반도체 장치의 제조방법.(method of evaluating siloxane used for forming insulation coating, coating fluid used for forming-insulation coating, process for producing the fluid, process for forming insulation coating for semiconductor device, and process for producing semiconductor device by applying the above process) |
US08/545,736 US5840821A (en) | 1994-03-11 | 1994-11-11 | Coating solution and method for preparing the coating solution, method for forming insulating films for semiconductor devices, and method for evaluating the coating solution |
JP07523350A JP3078326B2 (ja) | 1994-03-11 | 1994-11-11 | 絶縁膜形成用塗布液およびその製造方法ならびに半導体装置用絶縁膜の形成方法およびこれを適用する半導体装置の製造方法 |
US09/042,668 US5998522A (en) | 1994-03-11 | 1998-03-17 | Coating solution and method for preparing the coating solution, method for forming insulating films for semiconductor devices, and method for evaluating the coating solution |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP4131494 | 1994-03-11 | ||
JP6/41314 | 1994-03-11 |
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WO1995024639A1 true WO1995024639A1 (en) | 1995-09-14 |
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PCT/JP1994/001910 WO1995024639A1 (en) | 1994-03-11 | 1994-11-11 | Method of evaluating siloxane used for forming insulation coating, coating fluid used for forming insulation coating, process for producing the fluid, process for forming insulation coating for semiconductor device, and process for producing semiconductor device by applying the above process |
Country Status (6)
Country | Link |
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US (2) | US5840821A (ja) |
EP (1) | EP0701121A4 (ja) |
JP (2) | JP3078326B2 (ja) |
KR (1) | KR960702610A (ja) |
CN (1) | CN1125481A (ja) |
WO (1) | WO1995024639A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
EP0701121A1 (en) | 1996-03-13 |
JP2000328002A (ja) | 2000-11-28 |
EP0701121A4 (en) | 1997-09-03 |
JP3078326B2 (ja) | 2000-08-21 |
CN1125481A (zh) | 1996-06-26 |
KR960702610A (ko) | 1996-04-27 |
US5840821A (en) | 1998-11-24 |
US5998522A (en) | 1999-12-07 |
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