JP4406248B2 - フルオレンジカルボン酸エステルおよび感光性樹脂組成物 - Google Patents
フルオレンジカルボン酸エステルおよび感光性樹脂組成物 Download PDFInfo
- Publication number
- JP4406248B2 JP4406248B2 JP2003328519A JP2003328519A JP4406248B2 JP 4406248 B2 JP4406248 B2 JP 4406248B2 JP 2003328519 A JP2003328519 A JP 2003328519A JP 2003328519 A JP2003328519 A JP 2003328519A JP 4406248 B2 JP4406248 B2 JP 4406248B2
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- Japan
- Prior art keywords
- group
- meth
- acrylate
- alkyl
- copolymer
- 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.)
- Expired - Lifetime
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- 239000011342 resin composition Substances 0.000 title claims description 40
- 125000003262 carboxylic acid ester group Chemical class [H]C([H])([*:2])OC(=O)C([H])([H])[*:1] 0.000 title 1
- 229920005989 resin Polymers 0.000 claims description 72
- 239000011347 resin Substances 0.000 claims description 72
- NIHNNTQXNPWCJQ-UHFFFAOYSA-N fluorene Chemical compound C1=CC=C2CC3=CC=CC=C3C2=C1 NIHNNTQXNPWCJQ-UHFFFAOYSA-N 0.000 claims description 65
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 61
- 239000002253 acid Substances 0.000 claims description 49
- 150000001733 carboxylic acid esters Chemical class 0.000 claims description 47
- 239000000178 monomer Substances 0.000 claims description 44
- 125000000217 alkyl group Chemical group 0.000 claims description 35
- 125000006239 protecting group Chemical group 0.000 claims description 35
- 125000002947 alkylene group Chemical group 0.000 claims description 34
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 34
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 29
- 229920001577 copolymer Polymers 0.000 claims description 28
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 20
- 125000003118 aryl group Chemical group 0.000 claims description 19
- 150000002148 esters Chemical class 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 125000001931 aliphatic group Chemical group 0.000 claims description 15
- 125000002993 cycloalkylene group Chemical group 0.000 claims description 15
- 125000002723 alicyclic group Chemical group 0.000 claims description 13
- 229920003986 novolac Polymers 0.000 claims description 12
- 239000003504 photosensitizing agent Substances 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 11
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims description 9
- 125000006552 (C3-C8) cycloalkyl group Chemical group 0.000 claims description 8
- JESXATFQYMPTNL-UHFFFAOYSA-N 2-ethenylphenol Chemical compound OC1=CC=CC=C1C=C JESXATFQYMPTNL-UHFFFAOYSA-N 0.000 claims description 8
- 125000004122 cyclic group Chemical group 0.000 claims description 8
- 229920001665 Poly-4-vinylphenol Polymers 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 7
- 229920001519 homopolymer Polymers 0.000 claims description 7
- 229920000178 Acrylic resin Polymers 0.000 claims description 6
- 239000004925 Acrylic resin Substances 0.000 claims description 6
- 125000002252 acyl group Chemical group 0.000 claims description 6
- 125000004453 alkoxycarbonyl group Chemical group 0.000 claims description 5
- 125000003161 (C1-C6) alkylene group Chemical group 0.000 claims description 4
- 125000004183 alkoxy alkyl group Chemical group 0.000 claims description 2
- 125000005103 alkyl silyl group Chemical group 0.000 claims description 2
- BXKVMQAJHSXYHX-UHFFFAOYSA-N bicyclo[2.2.1]hept-2-en-4-ol Chemical compound C1CC2C=CC1(O)C2 BXKVMQAJHSXYHX-UHFFFAOYSA-N 0.000 claims description 2
- 125000003917 carbamoyl group Chemical group [H]N([H])C(*)=O 0.000 claims description 2
- 230000001678 irradiating effect Effects 0.000 claims description 2
- -1 fluorene compound Chemical class 0.000 description 125
- 125000001424 substituent group Chemical group 0.000 description 35
- 239000002585 base Substances 0.000 description 31
- 239000002904 solvent Substances 0.000 description 22
- 150000001875 compounds Chemical class 0.000 description 21
- 229920000642 polymer Polymers 0.000 description 20
- 125000005907 alkyl ester group Chemical group 0.000 description 14
- 230000035945 sensitivity Effects 0.000 description 14
- 150000002220 fluorenes Chemical group 0.000 description 13
- 150000002430 hydrocarbons Chemical group 0.000 description 13
- 239000010410 layer Substances 0.000 description 13
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 9
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 239000003054 catalyst Substances 0.000 description 9
- 238000011161 development Methods 0.000 description 9
- 230000018109 developmental process Effects 0.000 description 9
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 9
- 125000005843 halogen group Chemical group 0.000 description 9
- 230000002209 hydrophobic effect Effects 0.000 description 9
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 9
- 125000003983 fluorenyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3CC12)* 0.000 description 8
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 8
- HTPXFGUCAUTOEL-UHFFFAOYSA-N 9h-fluorene-1-carboxylic acid Chemical compound C1C2=CC=CC=C2C2=C1C(C(=O)O)=CC=C2 HTPXFGUCAUTOEL-UHFFFAOYSA-N 0.000 description 7
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 7
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 7
- 230000009471 action Effects 0.000 description 7
- 125000000732 arylene group Chemical group 0.000 description 7
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 7
- 238000000576 coating method Methods 0.000 description 7
- 238000004090 dissolution Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 150000007934 α,β-unsaturated carboxylic acids Chemical class 0.000 description 7
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- 125000005073 adamantyl group Chemical group C12(CC3CC(CC(C1)C3)C2)* 0.000 description 6
- 125000003545 alkoxy group Chemical group 0.000 description 6
- 238000007796 conventional method Methods 0.000 description 6
- 125000002950 monocyclic group Chemical group 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- ZJVMJDQGWHUSJK-UHFFFAOYSA-N C1=CC=CC=2C3=CC=CC=C3CC12.C(C)(C)(C)C(C(=O)O)C Chemical compound C1=CC=CC=2C3=CC=CC=C3CC12.C(C)(C)(C)C(C(=O)O)C ZJVMJDQGWHUSJK-UHFFFAOYSA-N 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
- 239000002841 Lewis acid Substances 0.000 description 5
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical group C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 5
- NDKBVBUGCNGSJJ-UHFFFAOYSA-M benzyltrimethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)CC1=CC=CC=C1 NDKBVBUGCNGSJJ-UHFFFAOYSA-M 0.000 description 5
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 5
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 5
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 5
- 239000012953 triphenylsulfonium Substances 0.000 description 5
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 4
- 238000005160 1H NMR spectroscopy Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 4
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 4
- 150000001299 aldehydes Chemical class 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 4
- LZCLXQDLBQLTDK-UHFFFAOYSA-N ethyl 2-hydroxypropanoate Chemical compound CCOC(=O)C(C)O LZCLXQDLBQLTDK-UHFFFAOYSA-N 0.000 description 4
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 4
- 150000004820 halides Chemical class 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 4
- 150000003871 sulfonates Chemical class 0.000 description 4
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 4
- 229920002554 vinyl polymer Polymers 0.000 description 4
- 125000004169 (C1-C6) alkyl group Chemical group 0.000 description 3
- WBYWAXJHAXSJNI-VOTSOKGWSA-M .beta-Phenylacrylic acid Natural products [O-]C(=O)\C=C\C1=CC=CC=C1 WBYWAXJHAXSJNI-VOTSOKGWSA-M 0.000 description 3
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 3
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical group CC1=CC=CC=C1C CTQNGGLPUBDAKN-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
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 3
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 3
- 125000003670 adamantan-2-yl group Chemical group [H]C1([H])C(C2([H])[H])([H])C([H])([H])C3([H])C([*])([H])C1([H])C([H])([H])C2([H])C3([H])[H] 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 235000013985 cinnamic acid Nutrition 0.000 description 3
- 229930016911 cinnamic acid Natural products 0.000 description 3
- 238000010511 deprotection reaction Methods 0.000 description 3
- 239000012954 diazonium Substances 0.000 description 3
- 150000001989 diazonium salts Chemical class 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 3
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- WBYWAXJHAXSJNI-UHFFFAOYSA-N methyl p-hydroxycinnamate Natural products OC(=O)C=CC1=CC=CC=C1 WBYWAXJHAXSJNI-UHFFFAOYSA-N 0.000 description 3
- 239000002105 nanoparticle Substances 0.000 description 3
- 125000002868 norbornyl group Chemical group C12(CCC(CC1)C2)* 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- 150000002989 phenols Chemical class 0.000 description 3
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000001953 recrystallisation Methods 0.000 description 3
- 230000007261 regionalization Effects 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- ISXSCDLOGDJUNJ-UHFFFAOYSA-N tert-butyl prop-2-enoate Chemical compound CC(C)(C)OC(=O)C=C ISXSCDLOGDJUNJ-UHFFFAOYSA-N 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 3
- 235000012431 wafers Nutrition 0.000 description 3
- 239000008096 xylene Substances 0.000 description 3
- OGRAOKJKVGDSFR-UHFFFAOYSA-N 2,3,5-trimethylphenol Chemical compound CC1=CC(C)=C(C)C(O)=C1 OGRAOKJKVGDSFR-UHFFFAOYSA-N 0.000 description 2
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 2
- UIERETOOQGIECD-ARJAWSKDSA-M 2-Methyl-2-butenoic acid Natural products C\C=C(\C)C([O-])=O UIERETOOQGIECD-ARJAWSKDSA-M 0.000 description 2
- GJYCVCVHRSWLNY-UHFFFAOYSA-N 2-butylphenol Chemical compound CCCCC1=CC=CC=C1O GJYCVCVHRSWLNY-UHFFFAOYSA-N 0.000 description 2
- SVONRAPFKPVNKG-UHFFFAOYSA-N 2-ethoxyethyl acetate Chemical compound CCOCCOC(C)=O SVONRAPFKPVNKG-UHFFFAOYSA-N 0.000 description 2
- 125000004135 2-norbornyl group Chemical group [H]C1([H])C([H])([H])C2([H])C([H])([H])C1([H])C([H])([H])C2([H])* 0.000 description 2
- YCOXTKKNXUZSKD-UHFFFAOYSA-N 3,4-xylenol Chemical compound CC1=CC=C(O)C=C1C YCOXTKKNXUZSKD-UHFFFAOYSA-N 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- UIERETOOQGIECD-UHFFFAOYSA-N Angelic acid Natural products CC=C(C)C(O)=O UIERETOOQGIECD-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-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
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 2
- PEEHTFAAVSWFBL-UHFFFAOYSA-N Maleimide Chemical compound O=C1NC(=O)C=C1 PEEHTFAAVSWFBL-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000006087 Silane Coupling Agent Substances 0.000 description 2
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- 239000003377 acid catalyst Substances 0.000 description 2
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 125000005250 alkyl acrylate group Chemical group 0.000 description 2
- 150000005215 alkyl ethers Chemical class 0.000 description 2
- XXROGKLTLUQVRX-UHFFFAOYSA-N allyl alcohol Chemical compound OCC=C XXROGKLTLUQVRX-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 125000003368 amide group Chemical group 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- RDOXTESZEPMUJZ-UHFFFAOYSA-N anisole Chemical compound COC1=CC=CC=C1 RDOXTESZEPMUJZ-UHFFFAOYSA-N 0.000 description 2
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 description 2
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 238000004440 column chromatography Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 2
- 150000004292 cyclic ethers Chemical class 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- 125000004855 decalinyl group Chemical group C1(CCCC2CCCCC12)* 0.000 description 2
- KZTYYGOKRVBIMI-UHFFFAOYSA-N diphenyl sulfone Chemical compound C=1C=CC=CC=1S(=O)(=O)C1=CC=CC=C1 KZTYYGOKRVBIMI-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 230000032050 esterification Effects 0.000 description 2
- 238000005886 esterification reaction Methods 0.000 description 2
- FJKIXWOMBXYWOQ-UHFFFAOYSA-N ethenoxyethane Chemical compound CCOC=C FJKIXWOMBXYWOQ-UHFFFAOYSA-N 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- 229940116333 ethyl lactate Drugs 0.000 description 2
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 description 2
- 125000001188 haloalkyl group Chemical group 0.000 description 2
- 150000008282 halocarbons Chemical class 0.000 description 2
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000007529 inorganic bases Chemical class 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 150000002596 lactones Chemical group 0.000 description 2
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
Landscapes
- Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
- Materials For Photolithography (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Description
「I. Sondi and E. Matijevic, Resist Technology and Processing XVII, Francis M. Houlihan, Editor, Proceedings of SPIE Vol. 3999(2000)、第627〜637頁」
前記式(1)において、R3は、アルキレン基(C1-6アルキレン基、C5-8シクロアルキルC1-4アルキレン基、C6-10アリールC1-4アルキレン基など)、シクロアルキレン基(C5-8シクロアルキレン基など)、−R3a−R3b−(式中、R3aはアルキレン基、R3bはアリーレン基を示す)で表される基(C1-4アルキレン−C6-10アリーレン基など)などであってもよい。
本発明は、前記フルオレンジカルボン酸エステルと、ベース樹脂と、感光剤とで構成された感光性樹脂組成物も包含する。前記ベース樹脂は、酸の作用により親水性基を生成する樹脂で構成されていてもよく、前記感光剤は光酸発生剤で構成されていてもよい。前記感光性樹脂組成物では、フルオレンジカルボン酸エステルと感光剤との割合(重量比)が、前者/後者=0.01/1〜100/1程度であってもよい。また、感光剤の使用量が、ベース樹脂100重量部に対して0.1〜50重量部程度であり、フルオレンジカルボン酸エステルの使用量が、ベース樹脂および感光剤の総量100重量部に対して、0.1〜30重量部程度であってもよい。
基R1およびR2で表されるアルキル基としては、メチル基、エチル基、プロピル基、イソプロピル基、ブチル基、t−ブチル基などのC1-6アルキル基(例えば、C1-4アルキル基、特にメチル基)が例示できる。好ましい置換数mおよびnは、0又は1、特に、0である。なお、フルオレンを構成するベンゼン環に対する基R1およびR2の結合位置は、特に限定されない。
フルオレン類を塩基と反応させると、フルオレンアニオンが生成し、この生成したフルオレンアニオンを求核剤として、アルデヒド類(パラホルムアルデヒドなど)などと求核置換反応させることによって、フルオレンの9位に置換基を導入する方法が知られている(例えば、Synthesis (1992), (9), 819-20(819〜820) を参照)。本発明では、このような方法を応用して、簡便にかつ効率よく前記式(1)で表されるフルオレンジカルボン酸エステル誘導体を得ることができる。
すなわち、前記式(3)において、基R5〜R7は前記式(1)における基R3に対応している。具体的には、式(3)で表される化合物のうち、(i)基R5−が、X−R3−であるハロゲン化カルボン酸エステル(X−R3−COOR4)を使用すると、式(2)で表されるフルオレン類の9位に、ハロゲン原子Xの置換位置に対応する基が2つ置換したフルオレンジカルボン酸エステルを得ることができ、(ii)基R5−が、CHR7=CR6−であるα,β−不飽和カルボン酸エステル(CHR7=CR6−COOR4)を使用すると、式(2)で表されるフルオレン類の9位が、前記不飽和カルボン酸エステルのβ位に付加したフルオレンジカルボン酸エステルを得ることができる。
感光性樹脂組成物(又はレジスト組成物)は、前記フルオレンジカルボン酸エステルと感光剤とベース樹脂(オリゴマー又はポリマー)とで構成できる。感光性樹脂組成物は、有機溶媒(アルコール類など)により現像可能であってもよいが、通常、水又はアルカリ現像可能であるのが好ましい。
ベース樹脂には、例えば、ヒドロキシル基含有ポリマー[ポリビニルアセタール、ポリビニルアルコール、エチレン−ビニルアルコール共重合体、ポリビニルフェノール系樹脂、ノボラック樹脂(フェノールノボラック樹脂)など]、カルボキシル基含有ポリマー[重合性不飽和カルボン酸((メタ)アクリル酸、無水マレイン酸、イタコン酸など)を含む単独又は共重合体など]、エステル基含有ポリマー[カルボン酸ビニルエステル(酢酸ビニルなど)、(メタ)アクリル酸エステル(メタクリル酸メチルなど)などの単量体の単独または共重合体(ポリ酢酸ビニル、エチレン−酢酸ビニル共重合体、(メタ)アクリル系樹脂など)、ポリエステルなど]、エーテル基を有するポリマー[ポリアルキレンオキシド、ポリオキシアルキレングリコール、ポリビニルエーテル系樹脂、ケイ素樹脂など]、カーボネート基含有ポリマー、アミド基又は置換アミド基を有するポリマー[ポリビニルピロリドン、ポリウレタン系重合体、ポリ尿素、ナイロン又はポリアミド系重合体(ラクタム成分、ジカルボン酸成分やジアミン成分を用いたポリアミドなど);ポリ(メタ)アクリルアミド系重合体;ポリアミノ酸;ビュレット結合を有するポリマー;アロハネート結合を有するポリマー;ゼラチンなどの蛋白類など]、ニトリル基を有するポリマー(アクリロニトリル系重合体など)、グリシジル基を有するポリマー(エポキシ樹脂、グリシジル(メタ)アクリレートの単独又は共重合体など)、ハロゲン含有ポリマー(ポリ塩化ビニル、塩化ビニル−酢酸ビニル共重合体、塩化ビニリデン系ポリマー、塩素化ポリプロピレンなど)、非芳香族性環基を有するポリマー(例えば、(メタ)アクリル酸シクロヘキシルなどのC5-8シクロアルキル基を有するモノマーのポリマー;(メタ)アクリル酸ノルボルニル、(メタ)アクリル酸アダマンチルなどの架橋環式C7-20脂肪族炭化水素環基を有するモノマーのポリマーなど)、重合性オリゴマー又はポリマー((メタ)アクリロイル基、アリル基、ビニル基、シンナモイル基などの重合性基を有するオリゴマー又はポリマーなど)などが例示できる。これらのベース樹脂は単独で又は2種以上組合わせて使用してもよい。
前記フルオレンジカルボン酸エステルと感光剤(光酸発生剤など)との割合(重量比)は、前者/後者=0.01/1〜100/1程度の広い範囲から選択でき、通常、0.1/1〜75/1、好ましくは1/1〜50/1程度であってもよい。
前記感光性樹脂組成物を基体(基板)に適用(塗布又は被覆)することにより感光層を形成できる。基体(基板)としては、パターンの特性や用途に応じて、金属(アルミニウム),ガラス,セラミックス(アルミナ,銅ドープアルミナ,タングステンシリケートなど),プラスチックなどから適当に選択でき、シリコンウェハーなどの半導体基板であってもよい。
パターン(特に微細なパターン)は、露光,現像やエッチングなどを組み合わせた慣用のリソグラフィー技術を利用して行うことができる。
1,4−ジオキサン200ml、フルオレン33.2g(0.2モル)を反応器に入れ、攪拌することによってフルオレンを溶解させたのち、10℃に冷却した状態で水酸化トリメチルベンジルアンモニウムの40重量%メタノール溶液(東京化成(株)製 トリトンB40)3.0mlを滴下し、30分攪拌した。次に、アクリル酸t−ブチル56.5g(0.44モル)を加えて、約3時間攪拌した。反応終了後、トルエン200ml、0.5N塩酸50mlを加えて洗浄した。水層を除去したのち、有機層を蒸留水30mlで3回洗浄した。溶媒を留去することにより、9,9−ビス(プロピオン酸t-ブチル)フルオレン[9,9−ビス{2−(t−ブトキシカルボニル)エチル}フルオレン]84.0g(収率99%)で得た。さらに、70℃のイソプロピルアルコール300mlに溶解させたのち、10℃まで冷却することにより再結晶させた結果、77.6g(収率92%、純度98.6%)の9,9−ビス(プロピオン酸t-ブチル)フルオレンを得ることができた。以下に、得られた9,9−ビス(プロピオン酸t-ブチル)フルオレンの1H−NMR分析結果を示す。
アクリル酸t−ブチルの代わりにブロモ酢酸t−ブチル39g(0.2モル)を用いる以外は実施例1と同様にして行い、9,9−ビス(酢酸t-ブチル)フルオレン[9,9−ビス(t−ブトキシカルボニルメチル)フルオレン]69.3g(収率88.0%)を得た。以下に、得られた9,9−ビス(プロピオン酸t-ブチル)フルオレンの1H−NMR分析結果を示す。
ヒドロキシル基のうち35モル%を1−エトキシエトキシ基で保護した重量平均分子量9,000のポリビニルフェノール樹脂0.5重量部に、ヒドロキシル基のうち37モル%をt−BOC(tert−ブトキシカルボニルオキシ)基で置換した重量平均分子量8,500のポリビニルフェノール樹脂0.5重量部を加え、下記式(A)で表される光酸発生剤0.02重量部を添加し、溶媒としてのプロピレングリコールモノメチルエーテルアセテート6重量部を混合することによりポジ型フォトレジストを調製した。
前記ステップ(1)で得られた感光性樹脂溶液に、実施例1で得られた9,9−ビス(プロピオン酸t-ブチル)フルオレンを表1に示す割合で添加し、フッ素樹脂(ポリテトラフルオロエチレン)(0.2μm)で濾過して感光性樹脂組成物を得た。なお、表1に示す割合(重量部)は、前記感光性樹脂溶液の溶剤を除く固形分1重量部に対する割合である。
洗浄したシリコンウエハーをヘキサメチルジシラザンで処理した後、前記ステップ(2)で得られた感光性樹脂組成物を、スピンコーターを用いて乾燥後の膜厚が0.4μmとなるように塗布し、ホットプレートにて100℃で1分間加熱した。次いで、248nm(KrFエキシマーレーザー)の露光波長を有する縮小投影露光機(キヤノン(株)製、FPA−3000EX5,NA=0.63)を用いて、線幅の異なるラインアンドスペースパターンを有するテストマスクを介して、露光量を段階的に変えて露光した。このウエハーをホットプレートにて100℃で1分間加熱した後、2.38重量%のテトラメチルアンモニウムハイドロオキサイド水溶液で1分間パドル現像してポジ型パターンを得た。
(ii)解像度:ライン幅0.25μmのライン:スペース=1:1がマスク寸法どおりになる露光量でラインが分離する最小寸法で表示した。(値が小さいほど高解像度で良好)
結果を表1に示す。なお、表1には比較例として、9,9−ビス(プロピオン酸t-ブチル)フルオレンを含有しない感光性樹脂組成物の感度及び解像度も記した。
Claims (5)
- 下記式(1)で表されるフルオレンジカルボン酸エステルと、
ベース樹脂と、感光剤とで構成され、
前記ベース樹脂が、ノボラック樹脂、並びにヒドロキシル基及び/又はカルボキシル基が脱離可能な保護基で保護された樹脂から選択された少なくとも1種であり、
前記保護された樹脂が、ポリビニルフェノール系樹脂、ヒドロキシル基及び/又はカルボキシル基含有(メタ)アクリル系樹脂、ヒドロキシル基含有脂環族樹脂、及びカルボキシル基含有脂環族樹脂から選択された少なくとも1種であり、
前記ポリビニルフェノール系樹脂が、ビニルフェノールの単独重合体又は共重合性単量体との共重合体であり、
前記ヒドロキシル基及び/又はカルボキシル基含有(メタ)アクリル系樹脂が、(メタ)アクリレートの単独又は共重合体、又は(メタ)アクリレートと共重合性単量体との共重合体であり、
前記ヒドロキシル基含有脂環族樹脂が、ヒドロキシC 3−8 シクロアルキル(メタ)アクリレートの単独又は共重合体(共重合性単量体との共重合体を含む)、又はヒドロキシビ乃至テトラC 3−8 シクロアルキル(メタ)アクリレート、ヒドロキシノルボルネン、およびヒドロキシC 1−4 アルキル−ノルボルネンから選択されたヒドロキシル基含有架橋環式脂肪族炭化水素環基を有するモノマーの単独又は共重合体(共重合性単量体との共重合体を含む)であり、
前記カルボキシル基含有脂環族樹脂が、カルボキシC 3−8 シクロアルキル(メタ)アクリレートの単独又は共重合体(共重合性単量体との共重合体を含む)、又はカルボキシビ乃至テトラC 3−8 シクロアルキル(メタ)アクリレート、およびカルボキシC 1−4 アルキルビ乃至テトラC 3−8 シクロアルキル(メタ)アクリレートから選択されたカルボキシル基含有架橋環式脂肪族炭化水素環基を有するモノマーの単独又は共重合体(共重合性単量体との共重合体を含む)であり、
前記ヒドロキシル基に対する保護基が、アシル基、アルコキシカルボニル基、5又は6員オキサシクロアルキル基、ビ又はトリシクロアルキル基、アルコキシアルキル基、又はC1−4アルキルシリル基であり、前記カルボキシル基に対する保護基が、アルキル基、ビ又はトリシクロアルキル基、5又は6員オキサシクロアルキル基、又はカルバモイル基であり、
前記感光剤が、光酸発生剤で構成されている感光性樹脂組成物。 - フルオレンジカルボン酸エステルが、9,9−ビス(C1−4アルコキシカルボニル−C1−6アルキル)フルオレン、9,9−ビス(C1−4アルコキシカルボニル−C5−8シクロアルキル)フルオレン、又は9,9−ビス(C1−4アルコキシカルボニル−C6−10アリール−C1−4アルキル)フルオレンである請求項1記載の感光性樹脂組成物。
- フルオレンジカルボン酸エステルと感光剤との割合(重量比)が、前者/後者=0.01/1〜100/1である請求項1記載の感光性樹脂組成物。
- 感光剤の使用量が、ベース樹脂100重量部に対して0.1〜50重量部であり、フルオレンジカルボン酸エステルの使用量が、ベース樹脂および感光剤の総量100重量部に対して、0.1〜30重量部である請求項1記載の感光性樹脂組成物。
- 請求項1記載の感光性樹脂組成物を基板に塗布し、所定のマスクを介して光線をパターン照射又は露光した後、加熱処理し、さらに現像してパターンを形成する方法。
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