WO2012036130A1 - フェノール樹脂組成物並びに硬化レリーフパターン及び半導体の製造方法 - Google Patents
フェノール樹脂組成物並びに硬化レリーフパターン及び半導体の製造方法 Download PDFInfo
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- WO2012036130A1 WO2012036130A1 PCT/JP2011/070750 JP2011070750W WO2012036130A1 WO 2012036130 A1 WO2012036130 A1 WO 2012036130A1 JP 2011070750 W JP2011070750 W JP 2011070750W WO 2012036130 A1 WO2012036130 A1 WO 2012036130A1
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- acid
- resin composition
- compound
- photosensitive resin
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- 239000005011 phenolic resin Substances 0.000 title claims abstract description 99
- 239000004065 semiconductor Substances 0.000 title claims abstract description 72
- 238000004519 manufacturing process Methods 0.000 title claims description 22
- 229920001568 phenolic resin Polymers 0.000 title abstract description 13
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 title abstract description 8
- 239000000203 mixture Substances 0.000 title description 102
- -1 biphenyl diyl structure Chemical group 0.000 claims abstract description 155
- 150000001875 compounds Chemical class 0.000 claims abstract description 74
- 230000001681 protective effect Effects 0.000 claims abstract description 39
- 239000011229 interlayer Substances 0.000 claims abstract description 34
- 239000011342 resin composition Substances 0.000 claims abstract description 31
- 239000002253 acid Substances 0.000 claims abstract description 27
- 239000002904 solvent Substances 0.000 claims abstract description 20
- 229920005989 resin Polymers 0.000 claims description 53
- 239000011347 resin Substances 0.000 claims description 53
- 238000000034 method Methods 0.000 claims description 38
- 238000010438 heat treatment Methods 0.000 claims description 21
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 21
- 125000004432 carbon atom Chemical group C* 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 15
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 13
- 125000000217 alkyl group Chemical group 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 11
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 239000010410 layer Substances 0.000 claims description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 8
- 125000005843 halogen group Chemical group 0.000 claims description 6
- 125000003700 epoxy group Chemical group 0.000 claims description 5
- 125000003566 oxetanyl group Chemical group 0.000 claims description 5
- 125000002723 alicyclic group Chemical group 0.000 claims description 3
- 125000001931 aliphatic group Chemical group 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- TUXAJHDLJHMOQB-UHFFFAOYSA-N 2-diazonio-4-sulfonaphthalen-1-olate Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC([N+]#N)=C([O-])C2=C1 TUXAJHDLJHMOQB-UHFFFAOYSA-N 0.000 claims description 2
- VJKZIQFVKMUTID-UHFFFAOYSA-N 2-diazonio-5-sulfonaphthalen-1-olate Chemical compound N#[N+]C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1[O-] VJKZIQFVKMUTID-UHFFFAOYSA-N 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- 239000004615 ingredient Substances 0.000 claims 1
- 239000000470 constituent Substances 0.000 abstract 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Natural products OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 58
- OKKJLVBELUTLKV-UHFFFAOYSA-N methanol Natural products OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 25
- 150000002989 phenols Chemical class 0.000 description 21
- 239000000463 material Substances 0.000 description 19
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 18
- 239000003431 cross linking reagent Substances 0.000 description 17
- 239000000126 substance Substances 0.000 description 17
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 15
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 15
- 239000002585 base Substances 0.000 description 15
- 229910052710 silicon Inorganic materials 0.000 description 15
- 239000010703 silicon Substances 0.000 description 15
- 125000005369 trialkoxysilyl group Chemical group 0.000 description 15
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 13
- 239000000243 solution Substances 0.000 description 13
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 12
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 12
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 12
- 229920001721 polyimide Polymers 0.000 description 12
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 11
- 0 CCC(C)(C)*c(cc1)ccc1-c1ccc(*C(C=CC#C2)C=C2O)cc1 Chemical compound CCC(C)(C)*c(cc1)ccc1-c1ccc(*C(C=CC#C2)C=C2O)cc1 0.000 description 11
- 239000000047 product Substances 0.000 description 11
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 10
- 239000007864 aqueous solution Substances 0.000 description 10
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 10
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 10
- 239000004094 surface-active agent Substances 0.000 description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 9
- 238000000576 coating method Methods 0.000 description 9
- 229930003836 cresol Natural products 0.000 description 9
- 238000005227 gel permeation chromatography Methods 0.000 description 9
- 238000002156 mixing Methods 0.000 description 9
- 229920000642 polymer Polymers 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 9
- 229920001187 thermosetting polymer Polymers 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 8
- DIWVBIXQCNRCFE-UHFFFAOYSA-N DL-alpha-Methoxyphenylacetic acid Chemical compound COC(C(O)=O)C1=CC=CC=C1 DIWVBIXQCNRCFE-UHFFFAOYSA-N 0.000 description 8
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 8
- 239000004642 Polyimide Substances 0.000 description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 8
- 239000003054 catalyst Substances 0.000 description 8
- 238000004132 cross linking Methods 0.000 description 8
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 description 8
- 229920002577 polybenzoxazole Polymers 0.000 description 8
- 239000002243 precursor Substances 0.000 description 8
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 8
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 8
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 8
- 229910015900 BF3 Inorganic materials 0.000 description 7
- 229920001807 Urea-formaldehyde Polymers 0.000 description 7
- 239000003795 chemical substances by application Substances 0.000 description 7
- 238000011161 development Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- QVEIBLDXZNGPHR-UHFFFAOYSA-N naphthalene-1,4-dione;diazide Chemical class [N-]=[N+]=[N-].[N-]=[N+]=[N-].C1=CC=C2C(=O)C=CC(=O)C2=C1 QVEIBLDXZNGPHR-UHFFFAOYSA-N 0.000 description 7
- 229920003986 novolac Polymers 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 7
- QBYIENPQHBMVBV-HFEGYEGKSA-N (2R)-2-hydroxy-2-phenylacetic acid Chemical compound O[C@@H](C(O)=O)c1ccccc1.O[C@@H](C(O)=O)c1ccccc1 QBYIENPQHBMVBV-HFEGYEGKSA-N 0.000 description 6
- OBCUSTCTKLTMBX-UHFFFAOYSA-N 2-acetyloxy-2-phenylacetic acid Chemical compound CC(=O)OC(C(O)=O)C1=CC=CC=C1 OBCUSTCTKLTMBX-UHFFFAOYSA-N 0.000 description 6
- YHXHKYRQLYQUIH-UHFFFAOYSA-N 4-hydroxymandelic acid Chemical compound OC(=O)C(O)C1=CC=C(O)C=C1 YHXHKYRQLYQUIH-UHFFFAOYSA-N 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 6
- 239000004593 Epoxy Substances 0.000 description 6
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 6
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 6
- IWYDHOAUDWTVEP-UHFFFAOYSA-N R-2-phenyl-2-hydroxyacetic acid Natural products OC(=O)C(O)C1=CC=CC=C1 IWYDHOAUDWTVEP-UHFFFAOYSA-N 0.000 description 6
- NWCHELUCVWSRRS-UHFFFAOYSA-N atrolactic acid Chemical compound OC(=O)C(O)(C)C1=CC=CC=C1 NWCHELUCVWSRRS-UHFFFAOYSA-N 0.000 description 6
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N butyric aldehyde Natural products CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 6
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 6
- MGNZXYYWBUKAII-UHFFFAOYSA-N cyclohexa-1,3-diene Chemical compound C1CC=CC=C1 MGNZXYYWBUKAII-UHFFFAOYSA-N 0.000 description 6
- 238000004090 dissolution Methods 0.000 description 6
- LZCLXQDLBQLTDK-UHFFFAOYSA-N ethyl 2-hydroxypropanoate Chemical compound CCOC(=O)C(C)O LZCLXQDLBQLTDK-UHFFFAOYSA-N 0.000 description 6
- 229960002510 mandelic acid Drugs 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 239000012299 nitrogen atmosphere Substances 0.000 description 6
- 125000004433 nitrogen atom Chemical group N* 0.000 description 6
- IXQGCWUGDFDQMF-UHFFFAOYSA-N o-Hydroxyethylbenzene Natural products CCC1=CC=CC=C1O IXQGCWUGDFDQMF-UHFFFAOYSA-N 0.000 description 6
- 239000003960 organic solvent Substances 0.000 description 6
- 239000003504 photosensitizing agent Substances 0.000 description 6
- 230000000379 polymerizing effect Effects 0.000 description 6
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- ARCGXLSVLAOJQL-UHFFFAOYSA-N trimellitic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 description 6
- XSQUKJJJFZCRTK-UHFFFAOYSA-N urea group Chemical group NC(=O)N XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 6
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N valeric aldehyde Natural products CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 description 6
- DAJPMKAQEUGECW-UHFFFAOYSA-N 1,4-bis(methoxymethyl)benzene Chemical compound COCC1=CC=C(COC)C=C1 DAJPMKAQEUGECW-UHFFFAOYSA-N 0.000 description 5
- HIXDQWDOVZUNNA-UHFFFAOYSA-N 2-(3,4-dimethoxyphenyl)-5-hydroxy-7-methoxychromen-4-one Chemical compound C=1C(OC)=CC(O)=C(C(C=2)=O)C=1OC=2C1=CC=C(OC)C(OC)=C1 HIXDQWDOVZUNNA-UHFFFAOYSA-N 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
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- 239000012298 atmosphere Substances 0.000 description 5
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- 230000000052 comparative effect Effects 0.000 description 5
- 238000001723 curing Methods 0.000 description 5
- 150000002148 esters Chemical class 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 5
- 125000004430 oxygen atom Chemical group O* 0.000 description 5
- 229920002223 polystyrene Polymers 0.000 description 5
- CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellitic acid Chemical class OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 description 5
- 150000003839 salts Chemical class 0.000 description 5
- RFFLAFLAYFXFSW-UHFFFAOYSA-N 1,2-dichlorobenzene Chemical compound ClC1=CC=CC=C1Cl RFFLAFLAYFXFSW-UHFFFAOYSA-N 0.000 description 4
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- RTTZISZSHSCFRH-UHFFFAOYSA-N 1,3-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC(CN=C=O)=C1 RTTZISZSHSCFRH-UHFFFAOYSA-N 0.000 description 4
- MODAACUAXYPNJH-UHFFFAOYSA-N 1-(methoxymethyl)-4-[4-(methoxymethyl)phenyl]benzene Chemical group C1=CC(COC)=CC=C1C1=CC=C(COC)C=C1 MODAACUAXYPNJH-UHFFFAOYSA-N 0.000 description 4
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 4
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- KUMMBDBTERQYCG-UHFFFAOYSA-N 2,6-bis(hydroxymethyl)-4-methylphenol Chemical compound CC1=CC(CO)=C(O)C(CO)=C1 KUMMBDBTERQYCG-UHFFFAOYSA-N 0.000 description 4
- GJYCVCVHRSWLNY-UHFFFAOYSA-N 2-butylphenol Chemical compound CCCCC1=CC=CC=C1O GJYCVCVHRSWLNY-UHFFFAOYSA-N 0.000 description 4
- YVWMPILNFZOQSZ-UHFFFAOYSA-N 2-methoxy-2-naphthalen-1-ylpropanoic acid Chemical compound C1=CC=C2C(C(C)(C(O)=O)OC)=CC=CC2=C1 YVWMPILNFZOQSZ-UHFFFAOYSA-N 0.000 description 4
- RGHMISIYKIHAJW-UHFFFAOYSA-N 3,4-dihydroxymandelic acid Chemical compound OC(=O)C(O)C1=CC=C(O)C(O)=C1 RGHMISIYKIHAJW-UHFFFAOYSA-N 0.000 description 4
- JVGVDSSUAVXRDY-UHFFFAOYSA-N 3-(4-hydroxyphenyl)lactic acid Chemical compound OC(=O)C(O)CC1=CC=C(O)C=C1 JVGVDSSUAVXRDY-UHFFFAOYSA-N 0.000 description 4
- VOXXWSYKYCBWHO-UHFFFAOYSA-N 3-phenyllactic acid Chemical compound OC(=O)C(O)CC1=CC=CC=C1 VOXXWSYKYCBWHO-UHFFFAOYSA-N 0.000 description 4
- VPWNQTHUCYMVMZ-UHFFFAOYSA-N 4,4'-sulfonyldiphenol Chemical compound C1=CC(O)=CC=C1S(=O)(=O)C1=CC=C(O)C=C1 VPWNQTHUCYMVMZ-UHFFFAOYSA-N 0.000 description 4
- HCFAJYNVAYBARA-UHFFFAOYSA-N 4-heptanone Chemical compound CCCC(=O)CCC HCFAJYNVAYBARA-UHFFFAOYSA-N 0.000 description 4
- GZVHEAJQGPRDLQ-UHFFFAOYSA-N 6-phenyl-1,3,5-triazine-2,4-diamine Chemical compound NC1=NC(N)=NC(C=2C=CC=CC=2)=N1 GZVHEAJQGPRDLQ-UHFFFAOYSA-N 0.000 description 4
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- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 4
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 4
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- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 4
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 4
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- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- PCSMJKASWLYICJ-UHFFFAOYSA-N Succinic aldehyde Chemical compound O=CCCC=O PCSMJKASWLYICJ-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- OKKRPWIIYQTPQF-UHFFFAOYSA-N Trimethylolpropane trimethacrylate Chemical compound CC(=C)C(=O)OCC(CC)(COC(=O)C(C)=C)COC(=O)C(C)=C OKKRPWIIYQTPQF-UHFFFAOYSA-N 0.000 description 4
- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 description 4
- 150000008065 acid anhydrides Chemical class 0.000 description 4
- 150000001299 aldehydes Chemical class 0.000 description 4
- 125000004849 alkoxymethyl group Chemical group 0.000 description 4
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- MRWUCCPUHKOFIJ-UHFFFAOYSA-N titanium(4+) 1,1,1-trifluoropentane-2,4-dione Chemical compound [Ti+4].FC(C(=O)CC(C)=O)(F)F MRWUCCPUHKOFIJ-UHFFFAOYSA-N 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 1
- WTVXIBRMWGUIMI-UHFFFAOYSA-N trifluoro($l^{1}-oxidanylsulfonyl)methane Chemical group [O]S(=O)(=O)C(F)(F)F WTVXIBRMWGUIMI-UHFFFAOYSA-N 0.000 description 1
- ULAQISQDFQAUCH-UHFFFAOYSA-N trifluoromethanesulfonic acid hydroiodide Chemical compound I.OS(=O)(=O)C(F)(F)F ULAQISQDFQAUCH-UHFFFAOYSA-N 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- XZZNDPSIHUTMOC-UHFFFAOYSA-N triphenyl phosphate Chemical compound C=1C=CC=CC=1OP(OC=1C=CC=CC=1)(=O)OC1=CC=CC=C1 XZZNDPSIHUTMOC-UHFFFAOYSA-N 0.000 description 1
- WLOQLWBIJZDHET-UHFFFAOYSA-N triphenylsulfonium Chemical compound C1=CC=CC=C1[S+](C=1C=CC=CC=1)C1=CC=CC=C1 WLOQLWBIJZDHET-UHFFFAOYSA-N 0.000 description 1
- 239000012953 triphenylsulfonium Substances 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- VOSUIKFOFHZNED-UHFFFAOYSA-N tris(prop-2-enyl) benzene-1,3,5-tricarboxylate Chemical compound C=CCOC(=O)C1=CC(C(=O)OCC=C)=CC(C(=O)OCC=C)=C1 VOSUIKFOFHZNED-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L65/00—Compositions of macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain; Compositions of derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G61/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G61/02—Macromolecular compounds containing only carbon atoms in the main chain of the macromolecule, e.g. polyxylylenes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/41—Compounds containing sulfur bound to oxygen
- C08K5/42—Sulfonic acids; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/04—Condensation polymers of aldehydes or ketones with phenols only
- C08L61/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/34—Condensation polymers of aldehydes or ketones with monomers covered by at least two of the groups C08L61/04, C08L61/18 and C08L61/20
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0047—Photosensitive materials characterised by additives for obtaining a metallic or ceramic pattern, e.g. by firing
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/022—Quinonediazides
- G03F7/023—Macromolecular quinonediazides; Macromolecular additives, e.g. binders
- G03F7/0233—Macromolecular quinonediazides; Macromolecular additives, e.g. binders characterised by the polymeric binders or the macromolecular additives other than the macromolecular quinonediazides
- G03F7/0236—Condensation products of carbonyl compounds and phenolic compounds, e.g. novolak resins
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
- G03F7/0381—Macromolecular compounds which are rendered insoluble or differentially wettable using a combination of a phenolic resin and a polyoxyethylene resin
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/20—Exposure; Apparatus therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2261/00—Macromolecular compounds obtained by reactions forming a carbon-to-carbon link in the main chain of the macromolecule
- C08G2261/30—Monomer units or repeat units incorporating structural elements in the main chain
- C08G2261/34—Monomer units or repeat units incorporating structural elements in the main chain incorporating partially-aromatic structural elements in the main chain
- C08G2261/342—Monomer units or repeat units incorporating structural elements in the main chain incorporating partially-aromatic structural elements in the main chain containing only carbon atoms
- C08G2261/3424—Monomer units or repeat units incorporating structural elements in the main chain incorporating partially-aromatic structural elements in the main chain containing only carbon atoms non-conjugated, e.g. paracyclophanes or xylenes
Definitions
- the first aspect of the present invention relates to a photosensitive resin composition for a semiconductor element surface protective film or an interlayer insulating film. More specifically, the present invention relates to a relief pattern forming material such as a surface protective film (buffer coat film) or an interlayer insulating film (passivation film) such as a semiconductor element, a method for producing a relief pattern using the relief pattern forming material, and The present invention relates to a semiconductor device having the relief pattern.
- a second aspect of the present invention is a phenol resin composition useful for forming a surface protective film or an interlayer insulating film in a semiconductor device, a method for producing a highly heat-resistant cured relief pattern using the composition, and the method
- the present invention relates to a semiconductor device having a cured relief pattern.
- a polyimide resin or a polybenzoxazole resin having excellent heat resistance, electrical characteristics, mechanical characteristics, and the like has been widely used for the surface protective film and interlayer insulating film of semiconductor devices. Since these resins have low solubility in various solvents, they are generally used as a composition dissolved in a solvent in the form of a precursor. Therefore, a step of cyclizing the precursor is required for use. This ring-closing process is usually performed by thermosetting which is heated to 300 ° C. or higher.
- thermosetting temperature has been required for the material for forming the surface protective film or the interlayer insulating film.
- thermosetting properties are required.
- Patent Documents 1 and 2 do not require a ring-closing step, are excellent in cost and photosensitivity, and are condensed by condensing phenols and aldehydes widely used as base resins in the resist field.
- a material using crosslinkable fine particles or a core-shell polymer has been proposed.
- Patent Document 3 in order to improve the thermal shock resistance of the phenol resin, when synthesizing the phenol resin, an ⁇ , ⁇ ′-dihaloxylene compound, ⁇ , ⁇ ′- A material obtained by using at least one substituted xylene compound selected from the group consisting of a dihydroxyxylene compound and an ⁇ , ⁇ ′-dialkoxyxylene compound and condensing it with a phenol compound has also been proposed.
- Patent Document 4 also describes a material in which a phenol resin having a condensate of a biphenyl compound and a phenol as a skeleton and a photoacid generator are used in combination.
- Patent Document 4 discloses the material as a material for forming a liquid crystal alignment control protrusion and / or a spacer, or as a material for simultaneously forming a liquid crystal alignment control protrusion and a spacer.
- Patent Document 1 or 3 has improved thermal shock resistance, it is one of the important film properties when applied to a semiconductor device as a surface protective film or an interlayer insulating film. Has not been studied at all.
- the problem to be solved by the present invention is that the polyimide resin has high elongation even when applied to a semiconductor device and cured with heat of 250 ° C. or less.
- Another object of the present invention is to provide a phenol resin composition that can be used as a substitute material for a polybenzoxazole resin, a method for producing a cured relief pattern using the composition, and a semiconductor device having the cured relief pattern.
- the problem to be solved by the present invention is that, even when applied to a semiconductor device and cured with heat of 250 ° C. or less, the reliability is high and the polyimide resin and the polybenzoxazole A phenol resin composition that can be used as an alternative material for a resin, a method for producing a cured relief pattern using the composition, and a semiconductor device having the cured relief pattern.
- the present inventors have found that a semiconductor having excellent elongation even when applied to a semiconductor device even at a low thermosetting temperature of 250 ° C. or less.
- a material capable of forming a protective film or an interlayer insulating film was unexpectedly found, and the first aspect of the present invention was completed. That is, the first aspect of the present invention is as follows.
- Phenol resin (A) having a biphenyldiyl structure in the main chain 100 parts by mass
- Photoacid generator (B) 1 to 30 parts by mass
- the phenol resin (A) is represented by the following general formula (1): ⁇ Wherein R is a halogen atom, a carboxyl group, a hydroxyl group, an aliphatic group optionally having an unsaturated bond having 1 to 10 carbon atoms, an alicyclic group having 3 to 10 carbon atoms, and 6 carbon atoms.
- R is an integer
- r is an integer of 0 to 3
- each R may be the same or different.
- the photoacid generator (B) is an ester compound of a phenol compound and 1,2-naphthoquinone-2-diazide-5-sulfonic acid or 1,2-naphthoquinone-2-diazide-4-sulfonic acid.
- the photosensitive resin composition according to any one of [1] to [3].
- the photoacid generator (B) has the following formula: ⁇ Wherein Q is a hydrogen atom or the following: And all Qs are not simultaneously hydrogen atoms. ⁇
- the compound (C) is an epoxy group, an oxetane group, a —N— (CH 2 —OR ′) group (wherein R ′ is hydrogen or an alkyl group having 1 to 4 carbon atoms).
- R ′ is hydrogen or an alkyl group having 1 to 4 carbon atoms.
- a —C— (CH 2 —OR ′) group ⁇ wherein R ′ is hydrogen or an alkyl group having 1 to 4 carbon atoms.
- the photosensitive resin composition according to any one of [1] to [5], which has at least two groups selected from the group consisting of:
- the present inventor when applied to a semiconductor device, is a material capable of forming a highly reliable film even at a low thermosetting temperature such as 250 ° C. or lower. It has been found that the elongation must be a specific value or more, and the second aspect of the present invention has been achieved. That is, the second aspect of the present invention is as follows.
- a phenol resin composition containing a phenol resin and a solvent The composition is spin coated on a silicon wafer, the silicon wafer and the spin coat film are heated on a hot plate at 100 ° C. for 3 minutes, and the spin coat film is cured at 250 ° C. for 1 hour in a nitrogen atmosphere.
- a cured product having a thickness of 10 ⁇ m is obtained, the cured product is cut with a dicing saw at a width of 3 mm, and the silicon wafer is peeled off by treatment with a 23% by mass hydrofluoric acid aqueous solution.
- the manufacturing method of a hardening relief pattern including a process.
- the photosensitive resin composition of the present invention that can be cured at a low temperature and is excellent in mechanical properties of a cured film such as elongation, it is highly reliable.
- a semiconductor element and a highly reliable semiconductor device using the semiconductor element can be manufactured.
- the thermosetting temperature for forming the surface protective film or interlayer insulating film of the semiconductor device can be set to a relatively low temperature (for example, 250 ° C. or lower). Moreover, according to the present invention, not only can the surface protection film or the interlayer insulating film be reduced in cracks to increase the reliability thereof, but also the reliability of the semiconductor device having the same can be increased.
- the photosensitive resin composition according to the first embodiment of the present invention contains the following components (A) to (C): biphenyldiyl in the main chain in a solvent.
- the phenol resin (A) having a biphenyldiyl structure in the main chain includes a repeating unit having a phenol structure and a biphenyldiyl structure. It is a polymer.
- the phenol structure and the biphenyldiyl structure may be bonded in any order.
- the phenol structure and the biphenyldiyl structure are preferably bonded via a methylene group from the viewpoint of further elongation.
- the biphenyldiyl-phenolic resin may have an alkylene structure having 20 or less carbon atoms, for example, a structure such as methylene and ethylene, in addition to the phenol structure and the biphenyldiyl structure.
- the biphenyldiyl-phenol resin can be produced by any known method.
- Examples of the production method include a condensation reaction between a compound having a biphenyldiyl structure (hereinafter also simply referred to as “biphenyldiyl compound”) and a phenol compound.
- -Biphenyl-2,2'-dicarboxylic acid 4,4'-bischloromethyl-2-methylbiphenyl, 4,4'-bischloromethyl-2,2'-dimethylbiphenyl, 4,4'-biphenyldimethanol 4,4′-bis (methoxymethyl) biphenyl, and the like.
- those having various substituents or reactive groups may be employed.
- a 4,4′-structure is given as a specific example of a biphenyldiyl compound.
- a compound having another substitution structure such as 2,2′-, 2,3′-, 3,4′-, etc. There may be.
- 4,4′-substituted biphenyldiyl compounds are preferred from the viewpoint of further elongation.
- These biphenyldiyl compounds may be used alone or in combination of two or more.
- the phenol compound to be condensed with the biphenyldiyl compound is an aromatic compound having at least one phenolic hydroxyl group in one molecule, and specific examples thereof include phenol, cresol, ethylphenol, n-propylphenol, Various o-, m-, and p-isomers of alkylphenols such as isobutylphenol, t-butylphenol, octylphenol, nonylphenol, xylenol, methylbutylphenol, di-t-butylphenol, etc., vinylphenol, allylphenol, propenylphenol, Various o-, m-, and p-isomers of ethynylphenol, cyclopentylphenol, cyclohexylphenol, cyclohexylresole, etc.
- Substituted phenols such Lumpur and the like.
- Specific examples having two or more phenolic hydroxyl groups in one molecule include catechol, resorcinol, hydroquinone, pyrogallol, phloroglucinol, 1,2,4-trihydroxybenzene, and the like. These phenols may be used alone or in combination of two or more.
- the resin can be obtained by polymerizing the biphenyldiyl compound and the phenol compound while dehydrating or dealcoholizing them, but a catalyst may be used during the polymerization.
- Acidic catalysts include hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, phosphorous acid, methanesulfonic acid, p-toluenesulfonic acid, dimethyl sulfuric acid, diethyl sulfuric acid, acetic acid, oxalic acid, 1-hydroxyethylidene-1,1'-diphosphone
- acids include acid, zinc acetate, boron trifluoride, boron trifluoride / phenol complex, boron trifluoride / ether complex, and the like.
- alkaline catalysts include lithium hydroxide, sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide, sodium carbonate, triethylamine, pyridine, 4-N, N-dimethylaminopyridine, piperidine, piperazine, 1 , 4-diazabicyclo [2.2.2] octane, 1,8-diazabicyclo [5.4.0] -7-undecene, 1,5-diazabicyclo [4.3.0] -5-nonene, ammonia, hexa And methylenetetramine.
- organic solvent When carrying out the synthesis reaction of biphenyldiyl-phenol resin, an organic solvent can be used if necessary.
- organic solvents include bis (2-methoxyethyl) ether, methyl cellosolve, ethyl cellosolve, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, diethylene glycol dimethyl ether, dipropylene glycol dimethyl ether, cyclohexanone, cyclopentanone, Examples include toluene, xylene, ⁇ -butyrolactone, N-methyl-2-pyrrolidone, but are not limited thereto.
- the amount of the organic solvent used is usually 10 to 1000 parts by mass, preferably 20 to 500 parts by mass with respect to 100 parts by mass as the total mass of the raw materials charged.
- the reaction temperature is usually from 40 to 250 ° C., more preferably from 100 to 200 ° C.
- the reaction time is usually 1 to 10 hours.
- the biphenyldiyl-phenolic resin used in the first composition is preferably the following formula (1): ⁇ Wherein R is a halogen atom, a carboxyl group, a hydroxyl group, an aliphatic group optionally having an unsaturated bond having 1 to 10 carbon atoms, an alicyclic group having 3 to 10 carbon atoms, and 6 carbon atoms. And a hydrogen atom of each group may be further substituted with a halogen atom, a carboxyl group, or a hydroxyl group.
- p and q are each independently an integer of 0 to 4, and r is an integer of 0 to 3. When p, q, or r is 2 or more, each R may be the same or different.
- ⁇ It is a phenol resin containing the repeating unit represented by this.
- the number of repeating units of the above formula (1) is 2 to 100, more preferably 8 to 80, and still more preferably 18 to 80 from the viewpoint of elongation.
- the biphenyldiyl structure is preferably connected at the 4,4'-position from the viewpoint of elongation.
- the biphenyldiyl-phenol resin used in the first composition is more preferably the following formula (2): It is a phenol resin containing the repeating unit represented by these.
- the number of repeating units of the above formula (2) is 2 to 100, more preferably 8 to 80, and still more preferably 18 to 80 from the viewpoint of elongation.
- the weight average molecular weight of the biphenyldiyl-phenol resin is 700 to 35,000, preferably 2,500 to 25,000, more preferably 5,000 to 25,000.
- the weight average molecular weight is preferably 700 or more from the viewpoint of elongation, and is preferably 35,000 or less from the viewpoint of alkali solubility of the composition.
- aqueous alkali-soluble resins include phenol resins that do not contain a biphenyldiyl structure, polymer resins of phenol and unsaturated bond-containing compounds, polyhydroxystyrene resins, polyamides, polyimides, and derivatives of these resins. , Precursors or copolymers.
- the phenol resin not containing the biphenyldiyl structure can be obtained by polymerizing phenol or a derivative thereof and an aldehyde compound, a ketone compound, a methylol compound, or an alkoxymethyl compound.
- phenol or derivatives thereof include phenol, cresol, ethylphenol, propylphenol, butylphenol, amylphenol, benzylphenol, adamantanephenol, benzyloxyphenol, xylenol, catechol, resorcinol, ethylresorcinol, hexylresorcinol, hydroquinone, pyrogallol, Phloroglucinol, 1,2,4-trihydroxybenzene, pararozolic acid, biphenol, bisphenol A, bisphenol AF, bisphenol B, bisphenol F, bisphenol S, dihydroxydiphenylmethane, 1,1-bis (4-hydroxyphenyl) cyclohexane, 1,4-bis (3-hydroxyphenoxybenzene), 2,2-bis (4-hydride) Xyl-3-methylphenyl) propane, ⁇ , ⁇ '-bis (4-hydroxyphenyl) -1,4-diisopropylbenzene, 9,9-bis
- Aldehyde compounds include formaldehyde, paraformaldehyde, acetaldehyde, propionaldehyde, pivalaldehyde, butyraldehyde, pentanal, hexanal, trioxane, glyoxal, cyclohexylaldehyde, diphenylacetaldehyde, ethylbutyraldehyde, benzaldehyde, glyoxylic acid, 5-norbornene-2 -Carboxaldehyde, malondialdehyde, succindialdehyde, glutaraldehyde, salicylaldehyde, naphthaldehyde, terephthalaldehyde and the like.
- ketone compounds include acetone, methyl ethyl ketone, diethyl ketone, dipropyl ketone, dicyclohexyl ketone, dibenzyl ketone, cyclopentanone, cyclohexanone, bicyclohexanone, cyclohexanedione, 3-butyn-2-one, 2-norbornanone, adamantanone, Examples include 2,2-bis (4-oxocyclohexyl) propane.
- methylol compounds include 1,3-bis (hydroxymethyl) urea, ribitol, arabitol, allitol, 2,2-bis (hydroxymethyl) butyric acid, 2-benzyloxy-1,3-propanediol, cyclohexanedimethanol, 2 , 2-dimethyl-1,3-propanediol, 2,2-diethyl-1,3-propanediol, monoacetin, 2-methyl-2-nitro-1,3-propanediol, 5-norbornene-2,2- Dimethanol, 5-norbornene-2,3-dimethanol, pentaerythritol, 2-phenyl-1,3-propanediol, trimethylolethane, trimethylolpropane, 3,6-bis (hydroxymethyl) durene, 2,6 -Bis (hydroxymethyl) -p-cresol, 2,3-bis (hydride) Xymethyl) naphthalene, 2,2′-bis
- alkoxymethyl compound examples include 1,4-bis (methoxymethyl) benzene, 1,3,4,6-tetrakis (methoxymethyl) glycoluril, 2,4,6-tris [bis (methoxymethyl) amino] -1 3,5-triazine and the like.
- the polymerization resin of the phenol and the unsaturated bond-containing compound can be obtained by polymerizing phenol or a derivative thereof and the unsaturated bond-containing compound.
- the same ones as described above can be used.
- the unsaturated bond-containing compound include butadiene, pentadiene, 1,3-butanediol-dimethacrylate, cyclohexadiene, cyclopentadiene, allyl ether. Allyl sulfide, diallyl adipate, dicyclopentadiene, 1-hydroxydicyclopentadiene, 1-methylcyclopentadiene, 2,5-norbornadiene, tetrahydroindene, 5-ethylidene-2-norbornene, 5-vinyl-2-norbornene, Examples include triallyl cyanurate.
- the polyamide, polyimide and precursor thereof, or a copolymer of these resins can be synthesized by a known method.
- polyamide is synthesized by a condensation reaction of a dicarboxylic acid or an acid chloride derivative thereof and a diamine.
- the polyimide and its precursor can be synthesized from a condensation reaction of tetracarboxylic dianhydride and diamine. From the viewpoint of ensuring the solubility in an aqueous alkali solution, it is preferable that the structural formula of diamine used when synthesizing the polyamide, polyimide and its precursor has at least one phenolic hydroxyl group.
- diamines include 3,3′-diamino-4,4′-dihydroxybiphenyl, 4,4′-diamino-3,3′-dihydroxybiphenyl, 3,3′-diamino-4, 4'-dihydroxydiphenylsulfone, 4,4'-diamino-3,3'-dihydroxydiphenylsulfone, bis- (3-amino-4-hydroxyphenyl) methane, 2,2-bis- (3-amino-4- Hydroxyphenyl) propane, 2,2-bis- (3-amino-4-hydroxyphenyl) hexafluoropropane, 2,2-bis- (4-amino-3-hydroxyphenyl) hexafluoropropane, bis- (4- Amino-3-hydroxyphenyl) methane, 2,2-bis- (4-amino-3-hydroxyphenyl) propane, 4,4'-diamy ⁇ 3,3′-dihydroxybenzophenone,
- the content of the biphenyldiyl-phenolic resin in the composition of the mixed resin is 50% by mass or more from the viewpoint of elongation. It is preferable that it is 60 mass% or more.
- the elongation when the photosensitive resin composition is a cured product is preferably 8% or more, more preferably 10% or more, from the viewpoint of reliability of the semiconductor element or semiconductor component using the semiconductor element.
- the first composition is not particularly limited as long as it is a composition that can form a resin pattern in response to radiation including ultraviolet rays, electron beams, and X-rays. It may be a photosensitive composition.
- the photoacid generator (B) When the first composition is used as a negative photosensitive composition, the photoacid generator (B) generates an acid upon irradiation with radiation, and the generated acid is the phenol resin (A) and the later-described acid. It can cause a crosslinking reaction with other components of the first composition.
- the photoacid generator (B) When the first composition is used as a negative photosensitive composition, the photoacid generator (B) generates an acid upon irradiation with radiation, and the generated acid is the phenol resin (A) and the later-described acid. It can cause a crosslinking reaction with other components of the first composition. Examples of such compounds include the following compounds:
- Diaryliodoniums Diphenyliodonium tetrafluoroborate, diphenyliodonium tetrafluorophosphate, diphenyliodonium tetrafluoroarsenate, diphenyliodonium trifluoromethanesulfonate, diphenyliodonium trifluoroacetate, diphenyliodonium-p-toluenesulfonate, 4-methoxy Phenylphenyliodonium tetrafluoroborate, 4-methoxyphenylphenyliodonium hexafluorophosphonate, 4-methoxyphenylphenyliodonium hexafluoroarsenate, 4-methoxyphenylphenyliodonium trifluoromethanesulfonate, 4-methoxyphenylphenyliodonium trifluoroacetate, 4 - Methoxyphenylphenyl
- Triarylsulfonium salts Triphenylsulfonium tetrafluoroborate, triphenylsulfonium hexafluorophosphonate, triphenylsulfonium hexafluoroarsenate, triphenylsulfonium methanesulfonate, triphenylsulfonium trifluoroacetate, triphenylsulfonium-p-toluene Sulfonate, 4-methoxyphenyldiphenylsulfonium tetrafluoroborate, 4-methoxyphenyldiphenylsulfonium hexafluorophosphonate, 4-methoxyphenyldiphenylsulfonium hexafluoroarsenate, 4-methoxyphenyldiphenylsulfonium methanesulfonate, 4-methoxyphenyldiphenylsulfonium Trifluoroa
- trichloromethyl-S-triazines include 2- (3-chlorophenyl) -bis (4,6-trichloromethyl) -S-triazine, 2- (4-chlorophenyl) -bis (4, 6-trichloromethyl) -S-triazine, 2- (4-methylthiophenyl) -bis (4,6-trichloromethyl) -S-triazine, 2- (4-methoxy- ⁇ -styryl) -bis (4,6 -Trichloromethyl) -S-triazine, 2- (4-methoxynaphthyl) -bis (4,6-trichloromethyl) -S-triazine and the like as diaryl iodonium salts include diphenyl iodonium trifluoroacetate, diphenyl iodonium trifluoromethane Sulfonate, 4-methoxyphenylphenyliodonium trifluorome
- Diazoketone compound examples include a 1,3-diketo-2-diazo compound, a diazobenzoquinone compound, a diazonaphthoquinone compound, and the like, and specific examples include 1,2-naphthoquinonediazide of phenols. There may be mentioned 4-sulfonic acid ester compounds.
- Sulfone Compounds of the sulfone compound include ⁇ -ketosulfone compounds, ⁇ -sulfonylsulfone compounds and ⁇ -diazo compounds of these compounds. Specific examples include 4-trisphenacylsulfone, mesitylphena. Examples include silsulfone and bis (phenacylsulfonyl) methane.
- Sulfonic acid compound examples include alkyl sulfonic acid esters, haloalkyl sulfonic acid esters, aryl sulfonic acid esters, and imino sulfonates.
- Preferred examples include benzoin tosylate, pyrogallol tris trifluoromethane sulfonate, o-nitrobenzyl trifluoromethane sulfonate, o-nitrobenzyl-p-toluene sulfonate, and the like.
- Sulfonimide compound examples include N- (trifluoromethylsulfonyloxy) succinimide, N- (trifluoromethylsulfonyloxy) phthalimide, N- (trifluoromethylsulfonyloxy) diphenylmaleimide, N- ( (Trifluoromethylsulfonyloxy) bicyclo [2.2.1] hept-5-ene-2,3-dicarboximide, N- (trifluoromethylsulfonyloxy) naphthylimide and the like.
- Oxime ester compound As an oxime ester compound, specifically, 2- [2- (4-methylphenylsulfonyloxyimino)]-2,3-dihydrothiophene-3-ylidene] -2- (2-methyl Phenyl) acetonitrile (trade name “Irgacure PAG121” by Ciba Specialty Chemicals), [2- (propylsulfonyloxyimino) -2,3-dihydrothiophene-3-ylidene] -2- (2-methylphenyl) acetonitrile (Ciba Specialty) Chemicals trade name “Irgacure PAG103”), [2- (n-octanesulfonyloxyimino) -2,3-dihydrothiophene-3-ylidene] -2- (2-methylphenyl) acetonitrile (Ciba Specialty Chemicals trade name) "Irgacure PAG
- Diazomethane compound examples include bis (trifluoromethylsulfonyl) diazomethane, bis (cyclohexylsulfonyl) diazomethane, and bis (phenylsulfonyl) diazomethane.
- the oxime ester compound is particularly preferable from the viewpoint of sensitivity.
- the amount of the compound (B) that generates an acid by light irradiation is 100 parts by weight of the biphenyldiyl-phenol resin that is the component (A) of the first composition. 1 to 30 parts by mass. If this addition amount is 1 part by mass or more, the amount of acid generated by radiation irradiation will be sufficient and the sensitivity will be improved. If this addition amount is 30 parts by mass or less, the mechanical properties after curing will be good. .
- the first composition can also be used as a positive photosensitive composition.
- the photoacid generator (B) preferably contains a naphthoquinonediazide derivative.
- the naphthoquinonediazide derivative include compounds having a 1,2-benzoquinonediazide structure or a 1,2-naphthoquinonediazide structure. These compounds are disclosed in, for example, US Pat. No. 2,772,972, US Pat. No. 2,797,213, US Pat. No. 3,669,658 and the like.
- the naphthoquinonediazide derivative is obtained from 1,2-naphthoquinonediazide-4-sulfonic acid ester of a polyhydroxy compound having a specific structure described in detail below, and 1,2-naphthoquinonediazide-5-sulfonic acid ester of the polyhydroxy compound. And at least one compound selected from the group consisting of the following (hereinafter also referred to as “NQD compound”).
- the NQD compound is obtained by subjecting the naphthoquinone diazide sulfonic acid compound to sulfonyl chloride with chlorosulfonic acid or thionyl chloride according to a conventional method, and subjecting the resulting naphthoquinone diazide sulfonyl chloride to a polyhydroxy compound.
- a polyhydroxy compound and a predetermined amount of 1,2-naphthoquinonediazide-5-sulfonyl chloride or 1,2-naphthoquinonediazide-4-sulfonyl chloride in a solvent such as dioxane, acetone or tetrahydrofuran, a base such as triethylamine can be obtained by reacting in the presence of a sex catalyst to carry out esterification, and washing the resulting product with water and drying.
- Examples of preferable NQD compounds from the viewpoint of physical properties of the cured film such as sensitivity and elongation include the following. ⁇ Wherein Q is a hydrogen atom or the following: And all Qs are not simultaneously hydrogen atoms. ⁇ .
- a naphthoquinone diazide sulfonyl ester compound in which 4-naphthoquinone diazide sulfonyl group and 5-naphthoquinone diazide sulfonyl group are used in the same molecule can be used, or 4-naphthoquinone diazide sulfonyl ester compound and 5-naphthoquinone diazide. It can also be used by mixing with a sulfonyl ester compound.
- the amount of the naphthoquinone diazide derivative used as the component (B) in the first composition is 1 to 30 parts by mass with respect to 100 parts by mass of the biphenyldiyl-phenol resin (A) of the first composition.
- the amount is preferably 1 to 20 parts by mass.
- this addition amount is 1 part by mass or more, the amount of acid generated by radiation irradiation is sufficient, the sensitivity is improved, and the patterning property is good.
- this addition amount is 30 parts by mass or less, curing is achieved. The mechanical properties of the subsequent film are good and there is little development residue (scum) in the exposed area.
- the above naphthoquinonediazide derivatives may be used alone or in combination of two or more.
- (C) a compound capable of reacting with the component (A) by an acid generated from the photoacid generator (B) or by heat An acid generated from the photoacid generator (B) or a compound capable of reacting with the biphenyldiyl-phenol resin as the component (A) by the action of heat (hereinafter also simply referred to as “crosslinking agent”) is used as the component (A).
- crosslinking agent a compound capable of reacting with the component (A) by the action of heat
- crosslinking agent is used as the component (A).
- film properties such as mechanical properties, heat resistance, and chemical resistance can be enhanced when the coating film is heated and cured.
- the cross-linking agent is preferably an epoxy group, an oxetane group, a —N— (CH 2 —OR ′) group, wherein R ′ is hydrogen or a carbon number of 1 to 4 It is an alkyl group.
- R ′ is hydrogen or a carbon number of 1 to 4 It is an alkyl group.
- ⁇ and a —C— (CH 2 —OR ′) group ⁇ wherein R ′ is hydrogen or an alkyl group having 1 to 4 carbon atoms.
- R ′ is hydrogen or an alkyl group having 1 to 4 carbon atoms.
- a melamine resin or urea resin in which the N-position is substituted with a methylol group or an alkoxymethyl group is exemplified.
- melamine resin, benzoguanamine resin, glycoluril resin, hydroxyethylene urea resin, urea resin, glycol urea resin, alkoxymethylated melamine resin, alkoxymethylated benzoguanamine resin, alkoxymethylated glycoluril resin, alkoxymethylated urea Resins can be mentioned.
- alkoxymethylated melamine resins alkoxymethylated benzoguanamine resins, alkoxymethylated glycoluril resins, and alkoxymethylated urea resins are known methylolated melamine resins, methylolated benzoguanamine resins, and methylol groups of methylolated urea resins. Obtained by conversion to an alkoxymethyl group.
- alkoxymethyl group examples include a methoxymethyl group, an ethoxymethyl group, a propoxymethyl group, a butoxymethyl group, and the like, but commercially available Cymel 300, 301, 303, 370, 325. 327, 701, 266, 267, 238, 1141, 272, 202, 1156, 1158, 1123, 1170, 1174, UFR65, 300 (manufactured by Mitsui Cytec Co., Ltd.), Nicarax MX-270, -280, -290, Nicalac MS-11, Nicalac MW-30, -100, -300, -390, -750 (manufactured by Sanwa Chemical Co., Ltd.) and the like can be preferably used. These compounds can be used alone or in combination.
- a C— (CH 2 —OR ′) group ⁇ wherein R ′ is hydrogen or an alkyl group.
- R ′ is hydrogen or an alkyl group.
- 1,4-bis (methoxymethyl) benzene, 4,4′-biphenyldimethanol, 4,4′-bis (methoxymethyl) biphenyl commercially available 26DMPC, 46DMOC, DM-BIPC-F, DM-BIOC-F, TM-BIP-A (manufactured by Asahi Organic Materials Co., Ltd.), DML-MBPC, DML-MBOC, DML-OCHP, DML-PC, DML-PCHP, DML-PTBP, DML-34X, DML-EP, DML-POP, DML-OC, dimethylol-Bis-C, dimethylol-BisOC-P, DML-BisOC-Z, DML-BisOCHP-Z, DML-PFP, DML- PSBP
- cross-linking agent having two or more epoxy groups or oxetane groups in the molecular structural formula examples include 1,1,2,2-tetra (p-hydroxyphenyl) ethane tetraglycidyl ether, glycerol triglycidyl ether, and the like.
- the addition amount of these crosslinking agents is 1 to 60 parts by mass, preferably 3 to 50 parts by mass with respect to 100 parts by mass of the biphenyldiyl-phenol resin (A).
- this addition amount is 1 part by mass or more, crosslinking proceeds sufficiently, and an effect of enhancing film properties can be obtained. If this addition amount is 60 parts by mass or less, the elongation is maintained.
- crosslinking agent used in the first composition for example, 2,2′-bis (2-oxazoline), 2,2′-isopropylidenebis (4-phenyl-2-oxazoline), 1 , 3-bis (4,5-dihydro-2-oxazolyl) benzene, 1,4-bis (4,5-dihydro-2-oxazolyl) benzene, Epocross K-2010E, K-2020E, K-2030E, WS- 500, WS-700, RPS-1005 (trade name, manufactured by Nippon Shokubai Co., Ltd.) and other oxazoline compounds, carbodilite SV-02, V-01, V-02, V-03, V-04, V-05, V- Carbodiimide compounds such as 07, V-09, E-01, E-02, LA-1 (trade name, manufactured by Nisshinbo Chemical Co., Ltd.), formaldehyde, glutaraldehyde, hexamethyle Aldehyde
- the first composition may further contain (D) a thermal base generator from the viewpoint of improving the physical properties of the cured film.
- a thermal base generator from the viewpoint of improving the physical properties of the cured film.
- the crosslinking agent as component (C) contains an epoxy group or oxetane group
- the crosslinking reaction between the crosslinking agent as component (C) and the resin as component (A) is accelerated during thermosetting.
- the thermal decomposition temperature of the thermal base generator used in the first composition is 50 ° C. or higher, preferably 70 ° C. or higher, more preferably 90 ° C. or higher.
- Specific examples of the thermal base generator include compounds represented by the following formulae. ⁇ Wherein n is an integer of 1-20. ⁇ ⁇ Wherein, m and n are each independently an integer of 1 to 20. ⁇ .
- the (D) thermal base generator used in the first composition has the following formula: It is represented by
- the amount of the (D) thermal base generator added is preferably 0.1 to 40 parts by mass with respect to 100 parts by mass of the biphenyldiyl-phenol resin (A).
- the amount is preferably 0.5 to 30 parts by mass. From the viewpoint of sufficiently promoting the cross-linking and obtaining the effect of enhancing the film properties, 0.1 part by mass or more is preferable, and from the viewpoint of elongation, 40 parts by mass or less is preferable.
- solvent used in the first composition examples include amides, sulfoxides, ureas, ketones, esters, lactones, ethers, halogenated hydrocarbons, hydrocarbons, and the like.
- N-methyl-2-pyrrolidone N, N-dimethylacetamide, N, N-dimethylformamide, dimethyl sulfoxide, tetramethylurea, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclopentanone, cyclohexanone, acetic acid Methyl, ethyl acetate, butyl acetate, diethyl oxalate, ethyl lactate, methyl lactate, butyl lactate, ⁇ -butyrolactone, propylene glycol monomethyl ether acetate, propylene glycol monomethyl ether, benzyl alcohol, phenyl glycol, tetra
- the addition amount of the solvent in the first composition is 100 to 1000 parts by weight, preferably 120 to 700 parts by weight, more preferably 150 to 700 parts by weight with respect to 100 parts by weight of the biphenyldiyl-phenol resin (A).
- the range is 500 parts by mass.
- the first composition contains, as necessary, a dye, a surfactant, an adhesion aid for enhancing adhesion to the substrate, a dissolution accelerator, a crosslinking accelerator, and the like. Can do.
- the dye examples include methyl violet, crystal violet, and malachite green.
- the blending amount of the dye is preferably 0.1 to 30 parts by mass with respect to 100 parts by mass of the biphenyldiyl-phenol resin (A).
- non-ionic surfactants composed of polyglycols such as polypropylene glycol and polyoxyethylene lauryl ether or derivatives thereof, for example, Fluorard (registered trademark, trade name, manufactured by Sumitomo 3M) Fluorosurfactants such as Megafac (registered trademark, trade name, manufactured by Dainippon Ink and Chemicals), Lumiflon (registered trademark, trade name, manufactured by Asahi Glass), for example, KP341 (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) ), DBE (trade name, manufactured by Chisso Corporation), granol (trade name, manufactured by Kyoeisha Chemical Co., Ltd.), and other organosiloxane surfactants.
- Fluorard registered trademark, trade name, manufactured by Sumitomo 3M
- Fluorosurfactants such as Megafac (registered trademark, trade name, manufactured by Dainippon Ink and Chemicals), Lumiflon (registere
- the amount of the surfactant used is preferably 0.01 to 10 parts by mass with respect to 100 parts by mass of the biphenyldiyl-phenol resin (A).
- adhesion assistant examples include various alkoxysilanes such as alkyl imidazoline, butyric acid, alkyl acid, polyhydroxystyrene, polyvinyl methyl ether, t-butyl novolac, epoxy silane, and epoxy polymer.
- alkoxysilane examples include tetraalkoxysilane, bis (trialkoxysilyl) methane, bis (trialkoxysilyl) ethane, bis (trialkoxysilyl) ethylene, bis (trialkoxysilyl) hexane, and bis (trialkoxysilyl).
- Octane bis (trialkoxysilyl) octadiene, bis [3- (trialkoxysilyl) propyl] disulfide, N-phenyl-3-aminopropyltrialkoxysilane, 3-mercaptopropyltrialkoxysilane, 2- (trialkoxysilylethyl) ) Pyridine, 3-methacryloxypropyltrialkoxysilane, 3-methacryloxypropyl dialkoxyalkylsilane, vinyltrialkoxysilane, 3-ureidopropyltrialkoxysilane, 3 Isocyanatopropyltrialkoxysilane, 3- (trialkoxysilyl) propyl succinic anhydride, N- (3-trialkoxysilylpropyl) -4,5-dihydroimidazole, 2- (3,4-epoxycyclohexyl) ethyltrialkoxy Reaction of silane, 3-
- Examples of the alkyl group in the above compound include methyl group, ethyl group, propyl group, butyl group and the like
- examples of the acid anhydride include maleic acid anhydride, phthalic acid anhydride, 5-norbornene-2,3-
- examples of the acid dianhydride include pyromellitic dianhydride, 3,3 ′, 4,4′-benzophenonetetracarboxylic dianhydride, and 4,4′-oxydiphthalic dianhydride.
- Examples of the urethane group include a t-butoxycarbonylamino group, and examples of the urea group include a phenylaminocarbonylamino group.
- the amount of the adhesive aid used is preferably 0.1 to 30 parts by mass with respect to 100 parts by mass of the biphenyldiyl-phenol resin (A).
- a compound having a hydroxyl group or a carboxyl group is preferable.
- the compound having a hydroxyl group include ballast agents, paracumylphenol, bisphenols, resorcinols, and linear phenolic compounds such as MtrisPC and MtetraPC, which are used in the naphthoquinonediazide compound, TrisP-HAP, TrisP- Non-linear phenolic compounds such as PHBA, TrisP-PA (all manufactured by Honshu Chemical Industry Co., Ltd.), 2-5 phenol substitutes of diphenylmethane, 1-5 phenol substitutes of 3,3-diphenylpropane, 2 , 2-bis- (3-amino-4-hydroxyphenyl) hexafluoropropane and a one-to-two reaction product of 5-norbornene-2,3-dicarboxylic anhydride, bis- (3-amino-4-hydroxyphenyl) ) 1 of sulfone and
- Examples of the compound having a carboxyl group include 3-phenyllactic acid, 4-hydroxyphenyllactic acid, 4-hydroxymandelic acid, 3,4-dihydroxymandelic acid, 4-hydroxy-3-methoxymandelic acid, 2-methoxy-2 -(1-naphthyl) propionic acid, mandelic acid, atrolactic acid, acetylmandelic acid, ⁇ -methoxyphenylacetic acid, 3-phenyllactic acid, 4-hydroxyphenyllactic acid, 4-hydroxymandelic acid, 3,4-dihydroxymandelic acid 4-hydroxy-3-methoxymandelic acid, 2-methoxy-2- (1-naphthyl) propionic acid, mandelic acid, atrolactic acid, O-acetylmandelic acid, ⁇ -methoxyphenylacetic acid, 4-hydroxymandelic acid, 3,4-dihydroxymandelic acid, 4-hydroxy-3-methoxy Examples include simandelic acid, mandelic acid, atrolactic
- the blending amount is preferably 0.1 to 50 parts by mass with respect to 100 parts by mass of the biphenyldiyl-phenol resin (A).
- radicals generated by heat or light include alkylphenones such as Irgacure 651, 184, 2959, 127, 907, 369, 379 (trade name, manufactured by BASF Japan), Irgacure 819 (trade name, manufactured by BASF Japan). ), Etc., titanocene such as Irgacure 784 (trade name, manufactured by BASF Japan), and oxime ester such as Irgacure OXE01, 02 (trade name, manufactured by BASF Japan).
- the first composition is applied to a suitable support such as a silicon wafer, ceramic, aluminum substrate, copper substrate and the like.
- a suitable support such as a silicon wafer, ceramic, aluminum substrate, copper substrate and the like.
- an adhesion assistant such as a silane coupling agent may be applied to the support in advance.
- the first composition can be applied by spin coating using a spinner, spray coating using a spray coater, dipping, printing, roll coating, or the like.
- the film is pre-baked at 80 to 140 ° C. to dry the coating film, and then irradiated with actinic radiation using an exposure apparatus such as a contact aligner, mirror projection, or stepper.
- the actinic radiation X-rays, electron beams, ultraviolet rays, visible rays and the like can be used, but those having a wavelength of 200 to 500 nm are preferable.
- the light source wavelength is preferably g-line, h-line or i-line of a mercury lamp, which may be used alone or in combination.
- a contact aligner, a mirror projection, and a stepper are particularly preferable.
- developers include inorganic alkalis such as sodium hydroxide, sodium carbonate, sodium silicate, aqueous ammonia, organic amines such as ethylamine, diethylamine, triethylamine, triethanolamine, tetramethylammonium hydroxide, tetrabutylammonium hydroxide.
- inorganic alkalis such as sodium hydroxide, sodium carbonate, sodium silicate, aqueous ammonia
- organic amines such as ethylamine, diethylamine, triethylamine, triethanolamine, tetramethylammonium hydroxide, tetrabutylammonium hydroxide.
- An aqueous solution of a quaternary ammonium salt such as quaternary ammonium salt or the like, and an aqueous solution to which an appropriate amount of a water-soluble organic solvent such as methanol or ethanol or a surfactant is added as required can be used.
- a quaternary ammonium salt such as quaternary ammonium salt or the like
- an aqueous solution to which an appropriate amount of a water-soluble organic solvent such as methanol or ethanol or a surfactant is added as required
- an aqueous tetramethylammonium hydroxide solution is preferable, and the concentration thereof is 0.5 to 10% by weight, preferably 1.0 to 5% by weight.
- the pattern film can be obtained by washing with a rinse solution to remove the developer.
- a rinse solution distilled water, methanol, ethanol, isopropanol or the like can be used alone or in combination.
- a cured relief pattern can be obtained by heating the relief pattern thus obtained.
- the heating temperature is preferably 150 ° C. or higher.
- a general method for forming a cured relief pattern using a polyimide or polybenzoxazole precursor composition it is necessary to convert it to polyimide or polybenzoxazole by heating to 300 ° C. or more to advance a dehydration cyclization reaction.
- this method can be suitably used for heat-sensitive semiconductor devices.
- the heat treatment may be performed at 300 to 400 ° C. in this method as well.
- a heat treatment apparatus a hot plate, an oven, and a temperature rising oven capable of setting a temperature program can be used. Air may be used as the atmospheric gas when performing the heat treatment, and an inert gas such as nitrogen or argon may be used. Further, when it is necessary to perform heat treatment at a lower temperature, heating may be performed under reduced pressure using a vacuum pump or the like.
- ⁇ Semiconductor device> The above-described cured relief pattern is used as a surface protective film, an interlayer insulating film, a rewiring insulating film, a protective film for a flip chip device, a protective film for a device having a bump structure, and a process in a known method for manufacturing a semiconductor device In combination, the semiconductor device according to the first aspect of the present invention can be manufactured.
- a semiconductor element surface protective film or an interlayer insulating film can be produced using the first composition.
- the first aspect of the present invention also relates to the use of the first composition in the production of a semiconductor element surface protective film or an interlayer insulating film.
- the phenol resin composition is a phenol resin composition containing a phenol resin and a solvent
- the composition is spin-coated on a silicon wafer
- the silicon wafer and The spin coat film is heated at 100 ° C. for 3 minutes, and the spin coat film is cured at 250 ° C. for 1 hour in a nitrogen atmosphere to obtain a cured product having a thickness of 10 ⁇ m.
- the cured product is 3 mm wide by a dicing saw.
- the silicon wafer was peeled by cutting and treating with a 23% by mass hydrofluoric acid aqueous solution, and left in an atmosphere at a temperature of 23 ° C. and a humidity of 50% for 24 hours or more to obtain 20 samples.
- the average value of the top five points of the tensile elongation of the sample when measured by a tensile tester is 20% or more, A phenol resin composition.
- the reliability of a surface protective film or an interlayer insulating film applied to a semiconductor device refers to sputtering, annealing, etching, curing of the surface protective film (curing), adhesion to a die attach film, and semiconductor in a later process of manufacturing the semiconductor device. It is to operate normally as a semiconductor device through a series of processes such as chip-to-chip connection, semiconductor chip-to-interposer connection, wire bonding, underfill injection, molding with sealing resin, solder reflow, burn-in, etc.
- the reliability is considered to be the overall performance of the surface protective film or the interlayer insulating film.
- the inventors have a history of heat in the series of various stages described above, and stress is generated due to the difference in thermal expansion coefficient between different materials of the semiconductor device, which results in warping of the semiconductor device. If the surface protective film or interlayer insulating film cannot withstand warping, defects such as cracks occur in the film, and the stress reduction due to the sealing resin filler originally expected for the surface protective film or interlayer insulating film etc. It was thought that the insulation and the ⁇ -ray shielding effect could not be exhibited.
- the present inventors examined the tensile elongation of a film existing as a surface protective film or an interlayer insulating film, and the average value of the tensile elongation measured under the specific conditions as described above is a specific value (that is, And about 20%) or more, it was found that even if warpage occurs, the expected function is maintained without causing defects such as cracks in the film.
- the average value of the tensile elongation is preferably 25% or more, more preferably 50% or more, and further preferably 54% or more from the viewpoint of reliability.
- the upper limit is preferably as the numerical value is larger, but is, for example, 100%.
- the tensile elongation measurement method and measurement conditions are as follows.
- a phenol resin composition is spin coated on a silicon wafer, the silicon wafer and the spin coat film are heated on a hot plate at 100 ° C. for 3 minutes, and the spin coat film is cured at 250 ° C. for 1 hour in a nitrogen atmosphere.
- This cured product is cut with a dicing saw at a width of 3 mm, and the silicon wafer is peeled off by treating with a 23% by mass hydrofluoric acid aqueous solution, and further left to stand in an atmosphere at a temperature of 23 ° C. and a humidity of 50% for 24 hours or more.
- the Young's modulus of the film obtained by thermosetting the phenol resin composition is preferably lower because the film can begin to deform even with a smaller stress and can exhibit a stress relaxation function.
- the Young's modulus is preferably less than 4.0 GPa, more preferably less than 3.5 GPa, and most preferably less than 3.0 GPa.
- the Young's modulus is preferably 1.0 GPa or more, and more preferably 1.5 GPa or more.
- the measuring method and measuring conditions of the Young's modulus are as follows. ⁇ Young's modulus measurement method> Film formation, sample preparation, and measurement are performed under the same conditions as the tensile elongation measurement method described above. The obtained SS curve is obtained according to JIS K 7161. The average value of is adopted.
- the phenol resin composition in the second aspect of the present invention (hereinafter also referred to as “second composition”) is a phenol resin among resins having a weight average molecular weight of 1,500 or more contained in the composition. Is 55% by mass or more, preferably 75% by mass or more, more preferably 95% by mass or more, and most preferably 100% by mass.
- the phenol resin used in the second composition is a polymer compound containing a phenol derivative in its repeating unit.
- the phenol resin is a resin obtained by polymerizing an aldehyde compound, a ketone compound, a methylol compound, or an alkoxymethyl compound with a phenol derivative; a phenol-diene polymer resin; a polyhydroxystyrene resin. And derivatives of these resins.
- the weight average molecular weight of the phenol resin used for a 2nd composition is 1,500 or more.
- a resin obtained by polymerizing an aldehyde compound, a ketone compound, a methylol compound, or an alkoxymethyl compound with respect to the phenol derivative will be described below.
- phenol derivatives include phenol, cresol, ethylphenol, propylphenol, butylphenol, amylphenol, benzylphenol, adamantanephenol, benzyloxyphenol, xylenol, catechol, resorcinol, ethylresorcinol, hexylresorcinol, hydroquinone, pyrogallol, phloroglucinol 1,2,4-trihydroxybenzene, pararozolic acid, biphenol, bisphenol A, bisphenol AF, bisphenol B, bisphenol F, bisphenol S, dihydroxydiphenylmethane, 1,1-bis (4-hydroxyphenyl) cyclohexane, 1,4 -Bis (3-hydroxyphenoxybenzene), 2,2-bis (4-hydroxy-3- Tilphenyl) propane, ⁇ , ⁇ ′-bis (4-hydroxyphenyl) -1,4-diisopropylbenzene, 9,9-bis (4-hydroxy-3
- aldehyde compounds include formaldehyde, paraformaldehyde, acetaldehyde, propionaldehyde, pivalaldehyde, butyraldehyde, pentanal, hexanal, trioxane, glyoxal, cyclohexylaldehyde, diphenylacetaldehyde, ethylbutyraldehyde, benzaldehyde, glyoxylic acid, 5-norbornene-2- Examples include carboxaldehyde, malondialdehyde, succindialdehyde, glutaraldehyde, salicylaldehyde, naphthaldehyde, terephthalaldehyde, and the like.
- ketone compound examples include acetone, methyl ethyl ketone, diethyl ketone, dipropyl ketone, dicyclohexyl ketone, dibenzyl ketone, cyclopentanone, cyclohexanone, bicyclohexanone, cyclohexanedione, 3-butyn-2-one, 2-norbornanone, adamantanone, 2 , 2-bis (4-oxocyclohexyl) propane and the like.
- methylol compounds include 1,3-bis (hydroxymethyl) urea, ribitol, arabitol, allitol, 2,2-bis (hydroxymethyl) butyric acid, 2-benzyloxy-1,3-propanediol, cyclohexanedimethanol, 2, 2-dimethyl-1,3-propanediol, 2,2-diethyl-1,3-propanediol, monoacetin, 2-methyl-2-nitro-1,3-propanediol, 5-norbornene-2,2-di Methanol, 5-norbornene-2,3-dimethanol, pentaerythritol, 2-phenyl-1,3-propanediol, trimethylolethane, trimethylolpropane, 3,6-bis (hydroxymethyl) durene, 2,6- Bis (hydroxymethyl) -p-cresol, 2,3-bis (hydro Cymethyl) naphthalene, 2,2′-bis (hydroxymethyl)
- alkoxymethyl compounds include 1,4-bis (methoxymethyl) benzene, 4,4′-bis (methoxymethyl) biphenyl, 1,3,4,6-tetrakis (methoxymethyl) glycoluril, 2,4,6- And tris [bis (methoxymethyl) amino] -1,3,5-triazine.
- the same phenol derivative as described above can be used as a phenol derivative obtained by polymerizing a phenol derivative and a diene compound.
- the diene compound include butadiene, pentadiene, Hexadiene, heptadiene, octadiene, 3-methyl-1,3-butadiene, 1,3-butanediol-dimethacrylate, 2,4-hexadiene-1-ol, methylcyclohexadiene, cyclopentadiene, cyclohexadiene, cyclohexadiene, Cyclooctadiene, dicyclopentadiene, 1-hydroxydicyclopentadiene, 1-methylcyclopentadiene, methyldicyclopentadiene, diallyl ether, diallyl sulfide, diallyl adipate, 2,5-norbornadi Emissions, tetrahydroinden
- the polyhydroxystyrene resin can be obtained by addition polymerization of a phenol derivative having an unsaturated bond.
- Phenol derivatives used in the synthesis of resins obtained by addition polymerization of phenol derivatives having unsaturated bonds include hydroxystyrene, dihydroxystyrene, allylphenol, coumaric acid, hydroxychalcone, N-hydroxyphenyl-5-norbornene-2,3- Examples include dicarboxylic imide, resveratrol, hydroxystilbene and the like.
- Acidic catalysts include hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, phosphorous acid, methanesulfonic acid, p-toluenesulfonic acid, dimethyl sulfuric acid, diethyl sulfuric acid, acetic acid, oxalic acid, 1-hydroxyethylidene-1,1'-diphosphone Examples thereof include acid, zinc acetate, boron trifluoride, boron trifluoride / phenol complex, boron trifluoride / ether complex, and the like.
- alkaline catalysts include lithium hydroxide, sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide, sodium carbonate, triethylamine, pyridine, 4-N, N-dimethylaminopyridine, piperidine, piperazine, 1 , 4-diazabicyclo [2.2.2] octane, 1,8-diazabicyclo [5.4.0] -7-undecene, 1,5-diazabicyclo [4.3.0] -5-nonene, ammonia, hexa And methylenetetramine.
- the phenol resin may be a copolymer of a plurality of components, and a compound having no phenolic hydroxyl group as a part of the phenol derivative may be used in the copolymerization.
- the weight average molecular weight of the phenol resin is preferably 1,500 to 200,000, more preferably 1,500 to 100,000, and most preferably 2,000 to 50,000.
- the second composition is characterized by high tensile elongation when formed into a cured film.
- the ratio of the number of oxygen atoms and nitrogen atoms to the number of carbon atoms is preferably 0.1 or less, more preferably 0.08 or less, and most preferably 0.06 or less.
- the interaction between polymers including hydrogen bonds falls within an appropriate range.
- solvent used in the second composition examples include amides, sulfoxides, ureas, ketones, esters, lactones, ethers, halogenated hydrocarbons, hydrocarbons, and the like.
- -Methyl-2-pyrrolidone N, N-dimethylacetamide, N, N-dimethylformamide, dimethyl sulfoxide, tetramethylurea, acetone, methyl ethyl ketone, methyl isobutyl ketone, cyclopentanone, cyclohexanone, methyl acetate, ethyl acetate, butyl acetate , Diethyl oxalate, ethyl lactate, methyl lactate, butyl lactate, ⁇ -butyrolactone, propylene glycol monomethyl ether acetate, propylene glycol monomethyl ether, benzyl alcohol, phenyl glycol, tetrahydr
- N-methyl-2-pyrrolidone dimethyl sulfoxide, tetramethylurea, butyl acetate, ethyl lactate, ⁇ -butyrolactone, propylene glycol from the viewpoints of resin solubility, resin composition stability, and adhesion to a substrate.
- Monomethyl ether acetate, propylene glycol monomethyl ether, benzyl alcohol, phenyl glycol, and tetrahydrofurfuryl alcohol are preferred.
- the amount of the solvent added is 100 to 1000 parts by weight, preferably 120 to 700 parts by weight, and more preferably 150 to 500 parts by weight with respect to 100 parts by weight of the phenol resin. is there.
- cross-linking agent is contained in the second composition.
- cross-linking agents include 1,1,2,2-tetra (p-hydroxyphenyl) ethanetetraglycidyl ether, glycerol triglycidyl ether, ortho-secondary butylphenyl glycidyl ether, 1,6-bis (2,3-epoxypropoxy) Naphthalene, diglycerol polyglycidyl ether, polyethylene glycol glycidyl ether, triglycidyl isocyanurate, epiclone 830, 850, 1050, N-680, N-690, N-695, N-770, HP-7200, HP-820, EXA -4850-1000 (trade name, manufactured by DIC), Denacol EX-201, EX-313, EX-314, EX-321, EX-411, EX-511, EX-512, EX-612, EX-6
- Oxazoline compounds carbodilite SV-02, V-01, V-02, V-03, V-04, V-05, V-07, V-09, E-01, E-02, LA-1 Name, manufactured by Nisshinbo Chemical Co., Ltd.), formaldehyde, glutaraldehyde, hexamethylenetetramine, trioxane, glyoxal, malondialdehyde Aldehydes such as succindialdehyde and modified aldehydes, 4,4′-diphenylmethane diisocyanate, tolylene diisocyanate, 1,3-phenylene bismethylene diisocyanate, dicyclohexylmethane-4,4′-diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate, Takenate 500, 600, Cosmonate NBDI, ND (trade name, manufactured by Mitsui Chemicals) Duranate 17B-60PX, TPA
- Epicron 830, 850, 1050, N-680, N-690, N-695, N-770, HP-7200 from the viewpoint of elongation and heat resistance of the obtained thermosetting film HP-820, EXA-4850-1000, Denacol EX-201, EX-313, EX-314, EX-321, EX-411, EX-511, EX-512, EX-612, EX-614, EX-614B , EX-731, EX-810, EX-911, EM-150, xylylene bisoxetane, 3-ethyl-3 ⁇ [(3-ethyloxetane-yl) methoxy] methyl ⁇ oxetane, 1,3-bis (4 , 5-dihydro-2-oxazolyl) benzene, Nicarak MW-30MH, MW-100LH, BL-60, MX-270, MX-280,
- the amount of the crosslinking agent used is preferably 0.1 to 30 parts by mass with respect to 100 parts by mass of the phenol resin.
- the second composition preferably contains a photosensitizer.
- the second composition can be made positive or negative.
- a photoacid generator As the photoacid generator, a naphthoquinone diazide (NQD) compound, an onium salt, a halogen-containing compound, and the like can be used. From the viewpoint of solvent solubility and storage stability, a photoactive compound having an NQD structure described later is preferable.
- onium salt examples include iodonium salts, sulfonium salts, phosphonium salts, ammonium salts, diazonium salts, and the like, and onium salts selected from the group consisting of diaryliodonium salts, triarylsulfonium salts, and trialkylsulfonium salts are preferable.
- halogen-containing compound examples include haloalkyl group-containing hydrocarbon compounds, and trichloromethyltriazine is preferable.
- naphthoquinone diazide compound examples include compounds having a 1,2-benzoquinone diazide structure or a 1,2-naphthoquinone diazide structure. These compounds include, for example, US Pat. No. 2,772,972, US Pat. No. 2,797. No. 213, U.S. Pat. No. 3,669,658, and the like.
- the naphthoquinonediazide structure includes 1,2-naphthoquinonediazide-4-sulfonic acid ester of a polyhydroxy compound having a specific structure described in detail below, and 1,2-naphthoquinonediazide-5-sulfonic acid ester of the polyhydroxy compound. At least one compound selected from the group consisting of (hereinafter also referred to as “NQD compound”).
- the NQD compound is obtained by subjecting the naphthoquinone diazide sulfonic acid compound to sulfonyl chloride with chlorosulfonic acid or thionyl chloride according to a conventional method, and subjecting the resulting naphthoquinone diazide sulfonyl chloride to a polyhydroxy compound.
- the NQD compound can be obtained by reacting in the presence of a basic catalyst for esterification, and washing the resulting product with water and drying.
- NQD compounds examples include the following. ⁇ Wherein Q is a hydrogen atom or the following: Of naphthoquinonediazide sulfonate groups, and all Qs are not simultaneously hydrogen atoms. ⁇
- a naphthoquinone diazide sulfonyl ester compound in which a 4-naphthoquinone diazide sulfonyl group and a 5-naphthoquinone diazide sulfonyl group are used in the same molecule can be used, or a 4-naphthoquinone diazide sulfonyl ester compound and a 5-naphthoquinone diazide sulfonyl ester compound. Can also be used as a mixture.
- the blending amount of the photosensitizer with respect to 100 parts by mass of the phenol resin is preferably 1 to 50 parts by mass, and more preferably 5 to 30 parts by mass.
- the blending amount of the photosensitizer is 1 part by mass or more, the patterning property of the resin is good, and when it is 50 parts by mass or less, the tensile elongation rate of the cured film is good and the exposed portion is developed. There is little residue (scum).
- the second composition can contain a dye, a surfactant, an adhesion assistant for enhancing adhesion to the substrate, a dissolution accelerator, a crosslinking accelerator, and the like.
- the dye examples include methyl violet, crystal violet, and malachite green.
- the blending amount of the dye is preferably 0.1 to 30 parts by mass with respect to 100 parts by mass of the phenol resin.
- surfactant examples include non-ionic surfactants composed of polyglycols such as polypropylene glycol and polyoxyethylene lauryl ether or derivatives thereof, and Fluorard (registered trademark, trade name, manufactured by Sumitomo 3M), for example.
- Fluorosurfactants such as Megafac (registered trademark, trade name, manufactured by Dainippon Ink and Chemicals), Lumiflon (registered trademark, trade name, manufactured by Asahi Glass), for example, KP341 (trade name, manufactured by Shin-Etsu Chemical Co., Ltd.) ), DBE (trade name, manufactured by Chisso Corporation), granol (trade name, manufactured by Kyoeisha Chemical Co., Ltd.), and other organosiloxane surfactants.
- Megafac registered trademark, trade name, manufactured by Dainippon Ink and Chemicals
- Lumiflon registered trademark, trade name, manufactured by Asahi Glass
- KP341 trade name, manufactured by Shin-Etsu Chemical Co., Ltd.
- DBE trade name, manufactured by Chisso Corporation
- granol trade name, manufactured by Kyoeisha Chemical Co., Ltd.
- the amount of the surfactant used is preferably 0.01 to 10 parts by mass with respect to 100 parts by mass of the phenol resin.
- adhesion assistant examples include alkyl imidazoline, butyric acid, alkyl acid, polyhydroxystyrene, polyvinyl methyl ether, t-butyl novolac, epoxy silane, epoxy polymer, and various alkoxy silanes.
- alkoxysilane examples include, for example, tetraalkoxysilane, bis (trialkoxysilyl) methane, bis (trialkoxysilyl) ethane, bis (trialkoxysilyl) ethylene, bis (trialkoxysilyl) hexane, and bis (trialkoxy).
- Examples of the alkyl group in the above compound include methyl group, ethyl group, propyl group, butyl group and the like
- examples of the acid anhydride include maleic acid anhydride, phthalic acid anhydride, 5-norbornene-2,3-
- examples of the acid dianhydride include pyromellitic dianhydride, 3,3 ′, 4,4′-benzophenonetetracarboxylic dianhydride, and 4,4′-oxydiphthalic dianhydride.
- Examples of the urethane group include a t-butoxycarbonylamino group, and examples of the urea group include a phenylaminocarbonylamino group.
- the amount of the adhesive aid used is preferably 0.1 to 30 parts by mass with respect to 100 parts by mass of the phenol resin.
- a compound having a hydroxyl group or a carboxyl group is preferable.
- the compound having a hydroxyl group include a ballast agent used in the above-mentioned naphthoquinone diazide compound, paracumylphenol, bisphenols, resorcinol, and linear phenol compounds such as MtrisPC and MtetraPC, TrisP-HAP, TrisP -Non-linear phenolic compounds such as PHBA and TrisP-PA (all manufactured by Honshu Chemical Industry Co., Ltd.), 2-5 phenol substitutes of diphenylmethane, 1-5 phenol substitutes of 3,3-diphenylpropane, A one-to-two reaction product of 2,2-bis- (3-amino-4-hydroxyphenyl) hexafluoropropane and 5-norbornene-2,3-dicarboxylic anhydride, bis- (3-amino-4-hydroxy Phenyl) sulfone
- Examples of the compound having a carboxyl group include 3-phenyllactic acid, 4-hydroxyphenyllactic acid, 4-hydroxymandelic acid, 3,4-dihydroxymandelic acid, 4-hydroxy-3-methoxymandelic acid, 2-methoxy-2 -(1-naphthyl) propionic acid, mandelic acid, atrolactic acid, acetylmandelic acid, ⁇ -methoxyphenylacetic acid, 3-phenyllactic acid, 4-hydroxyphenyllactic acid, 4-hydroxymandelic acid, 3,4-dihydroxymandelic acid 4-hydroxy-3-methoxymandelic acid, 2-methoxy-2- (1-naphthyl) propionic acid, mandelic acid, atrolactic acid, O-acetylmandelic acid, ⁇ -methoxyphenylacetic acid, 4-hydroxymandelic acid, 3,4-dihydroxymandelic acid, 4-hydroxy-3-methoxy Examples thereof include simandelic acid, mandelic acid, atro
- the blending amount is preferably 0.1 to 30 parts by mass with respect to 100 parts by mass of the phenol resin.
- crosslinking accelerator those that generate an acid, a base, or a radical by heat or light are preferable.
- examples of those that generate acid by heat or light include TPS-105, 1000, DTS-105, NDS-105, 165 (trade name, manufactured by Midori Chemical Co., Ltd.), DPI-DMAS, TTBPS-TF, TPS-TF, DTBPI.
- Sulfonates such as onium salts such as -TF (trade name, manufactured by Toyo Gosei Co., Ltd.), methyl methanesulfonate, ethyl methanesulfonate, methyl benzenesulfonate, methyl p-toluenesulfonate, methoxyethyl p-toluenesulfonate , NAI-100, 101, 105, 106, PAI-101 (trade name, manufactured by Midori Chemical Co., Ltd.), Irgacure PAG-103, 108, 121, 203, CGI-1380, 725, NIT, 1907, PNBT (trade name, Oxime sulfonates such as BASF Japan) .
- -TF trade name, manufactured by Toyo Gosei Co., Ltd.
- methyl methanesulfonate ethyl methanesulfonate
- U-CATSA-1, 102, 506, 603, 810 (trade name, manufactured by San Apro), CGI-1237, 1290, 1293 (trade name, manufactured by BASF Japan) are those that generate bases by heat or light.
- amine salts such as 2,6-piperidine or butylamine, diethylamine, dibutylamine, N, N'-diethyl-1,6-diaminohexane, hexamethylenediamine, etc. converted to urethane groups or urea groups, etc. Is mentioned.
- Examples of the urethane group include a t-butoxycarbonylamino group, and examples of the urea group include a phenylaminocarbonylamino group.
- radicals generated by heat or light examples include alkylphenones such as Irgacure 651, 184, 2959, 127, 907, 369, 379 (trade name, manufactured by BASF Japan), Irgacure 819 (trade name, manufactured by BASF Japan). ), Etc., titanocene such as Irgacure 784 (trade name, manufactured by BASF Japan), and oxime ester such as Irgacure OXE01, 02 (trade name, manufactured by BASF Japan).
- alkylphenones such as Irgacure 651, 184, 2959, 127, 907, 369, 379 (trade name, manufactured by BASF Japan), Irgacure 819 (trade name, manufactured by BASF Japan).
- Etc. titanocene
- Irgacure 784 trade name, manufactured by BASF Japan
- oxime ester such as Irgacure OXE01, 02 (trade name, manufactured by BASF Japan).
- a second composition containing a photosensitizer is applied to an appropriate support or substrate, such as a silicon wafer, ceramic, aluminum substrate or the like.
- an adhesion assistant such as a silane coupling agent may be applied to the support or the substrate in advance.
- the composition is applied by spin coating using a spinner, spray coating using a spray coater, dipping, printing, roll coating, or the like.
- prebaking at 80 to 140 ° C. to dry the coating film the phenol resin composition is exposed.
- the actinic radiation to be exposed X-rays, electron beams, ultraviolet rays, visible rays and the like can be used, but those having a wavelength of 200 to 500 nm are preferable.
- the light source wavelength is preferably g-line, h-line or i-line of a mercury lamp, which may be used alone or in combination.
- a contact aligner, a mirror projection, and a stepper are particularly preferable.
- developers include inorganic alkalis such as sodium hydroxide, sodium carbonate, sodium silicate, aqueous ammonia, organic amines such as ethylamine, diethylamine, triethylamine, triethanolamine, tetramethylammonium hydroxide, tetrabutylammonium hydroxide.
- An aqueous solution such as a quaternary ammonium salt such as quaternary ammonium salt and an aqueous solution to which an appropriate amount of a water-soluble organic solvent such as methanol or ethanol or a surfactant is added as required can be used.
- an aqueous tetramethylammonium hydroxide solution is preferable, and the concentration thereof is preferably 0.5 to 10% by mass, and more preferably 1.0 to 5% by mass.
- the pattern film can be obtained by washing with a rinse solution to remove the developer.
- a rinse solution distilled water, methanol, ethanol, isopropanol or the like can be used alone or in combination.
- a cured relief pattern can be obtained by heating the relief pattern thus obtained.
- the heating temperature is preferably 150 ° C. or higher and 280 ° C. or lower.
- the polyimide or polybenzoxazole is heated by heating to 300 ° C. or more to advance a dehydration cyclization reaction.
- a heat-sensitive semiconductor device or the like it is preferably used for a semiconductor device having an insulating layer made of a high-dielectric material or a ferroelectric material having a process temperature restriction, such as an oxide of a refractory metal such as titanium, tantalum, or hafnium.
- the heat treatment may be performed at 300 to 400 ° C. in this method as well.
- Such heat treatment can be performed by using a hot plate, an oven, or a temperature rising oven in which a temperature program can be set. Air may be used as the atmospheric gas when performing the heat treatment, and an inert gas such as nitrogen or argon may be used. Further, when it is necessary to perform heat treatment at a lower temperature, heating may be performed under reduced pressure using a vacuum pump or the like.
- a relief pattern can be formed by forming a relief pattern in the coating process of the second composition or by processing with a laser or the like after the coating process. it can.
- the phenol resin composition can be printed and applied in a relief pattern by screen printing, letterpress printing, planographic printing, or the like.
- a relief pattern can also be formed by discharging a solution containing a phenol resin composition from a nozzle by spraying using an inkjet method, a dispenser method, or direct drawing using a plotter.
- a laser for example, an excimer laser or a UV-YAG laser is used, and a portion other than the relief pattern is lasered.
- a relief pattern can be formed by burning off.
- a cured relief pattern can be obtained by heating the obtained relief pattern.
- a semiconductor device comprising a semiconductor element and a cured film provided on the semiconductor element, wherein the cured film is a cured relief pattern manufactured using the second composition is also a second aspect of the present invention. It is an aspect.
- the above-mentioned cured relief pattern is used as a protective film for a device having a surface protective film, an interlayer insulating film, a rewiring insulating film, a flip chip device protective film, or a bump structure. It can be manufactured by combining with a known method for manufacturing a semiconductor device.
- the second aspect of the present invention also relates to the use of the second composition in the production of a semiconductor element surface protective film or an interlayer insulating film.
- a 500 mL separable flask was charged with 43.7 g (0.2 mol) of di-t-butyl dicarbonate and 0.25 g (0.002 mol) of 4-N, N-dimethylaminopyridine, and heated to 35 ° C. with stirring. 21.04 g (0.1 mol) of 1,3-di-4-piperidylpropane was added over 30 minutes so that the temperature of the reaction solution did not exceed 40 ° C. After completion of the addition, the temperature was raised to 55 ° C. and stirred for 8 hours.
- A-1 and A-2 are commercially available MEH-7851 series phenolic resins having a biphenyldiyl structure in the resin skeleton, and A-3 is a biphenyldiyl structure in the resin skeleton. It is a cresol type phenol resin manufactured by Asahi Organic Materials Co., Ltd., which does not contain.
- Component B-1 Photoacid generator represented by the following formula ⁇ In the formula, 83% of Q is the following: The remainder is a hydrogen atom. ⁇ .
- C Component C-1: Nikaluck MX-390 manufactured by Sanwa Chemical Co., Ltd.
- C-2 Nikaluck MX-270 manufactured by Sanwa Chemical Co., Ltd.
- C-3 Denasel EX-321L manufactured by Nagase ChemteX Corporation
- C-4 ETERNACOLL OXBP manufactured by Ube Industries, Ltd.
- a sample for measuring elongation according to the present invention was produced by the following method.
- the photosensitive resin compositions obtained in Examples and Comparative Examples of the present invention were spin-coated on a 6-inch silicon wafer substrate provided with an aluminum vapor deposition layer on the outermost surface so that the film thickness after curing was about 10 ⁇ m. Then, it was heated at 250 ° C. for 2 hours under a nitrogen atmosphere to obtain a cured resin film.
- the obtained cured resin film was cut into a width of 3 mm with a dicing saw, and then peeled off from the wafer with a dilute hydrochloric acid aqueous solution, and the obtained 20 samples were left in an atmosphere at a temperature of 23 ° C.
- ⁇ Preparation Example 1> In a 1 L separable flask, 141.2 g (1.5 mol) of phenol was added, heated to 80 ° C. in an oil bath while stirring under a nitrogen stream, and 3.0 g of boron trifluoride / phenol complex was added. The temperature was raised to 130 ° C., and 132.2 g (1.0 mol) of dicyclopentadiene was added dropwise over 2 hours. After completion of dropping, the mixture was further stirred at 130 ° C. for 5 hours.
- the acid catalyst was neutralized with calcium hydroxide and distilled under reduced pressure to remove unreacted phenol by distillation to obtain 203 g of phenol-dicyclopentadiene resin (P-1).
- the weight average molecular weight (Mw, converted to polystyrene) of P-1 by GPC was 10200.
- Preparation Example 3 The same operation was performed except that the amounts of pyridine and propionyl chloride in Preparation Example 2 were changed to 39.6 g (0.50 mol) and 46.3 g (0.50 mol), respectively, blocking 76% of the hydroxyl groups of cresol novolac. Resin (P-3) was obtained. The fact that 76% of the hydroxyl groups were blocked by P-3 was confirmed by 1 H-NMR that the peak intensity of hydroxyl groups near 9 ppm was reduced by 76% compared to untreated EP4080G. The weight average molecular weight (Mw, converted to polystyrene) of P-3 by GPC was 5100.
- the evaluation items in Table 2 were tested as follows.
- TC Thermal cycle (TC) test> The phenol resin composition was spin-coated on a silicon wafer, heated for 3 minutes on a hot plate at 100 ° C., and then cured at 250 ° C. for 1 hour in a nitrogen atmosphere to obtain a cured film having a thickness of 10 ⁇ m. This was subjected to 1000 cycles of tests at ⁇ 65 ° C. to 135 ° C. for 30 minutes using a thermal cycle chamber TSE-11 (manufactured by Espec Corp.), and the film surface was observed with an optical microscope. A film with no cracks was marked with ⁇ , and a film with no cracks.
- the phenol resin composition was spin-coated on a silicon wafer, heated for 3 minutes on a hot plate at 100 ° C., and then cured at 250 ° C. for 1 hour in a nitrogen atmosphere to obtain a cured film having a thickness of 10 ⁇ m. After cutting this into a 3 mm width with a dicing saw, 20 samples obtained by peeling from a silicon wafer using a 23% hydrofluoric acid aqueous solution were left in an atmosphere at a temperature of 23 ° C.
- the Young's modulus was calculated by obtaining the slope in the elastic region from the obtained SS curve according to the method of JIS K-7161, and the average value of the lower five points was adopted. As is clear from the results in Table 1, those having a tensile elongation of 20% or more do not cause cracks in the TC test. Moreover, the phenol resin which produces such a result has a small ratio of (oxygen atom + nitrogen atom) / carbon atom, and this does not correlate with the molecular weight, which is a general method for improving the tensile elongation.
- a photosensitive resin composition for a semiconductor element surface protective film or an interlayer insulating film is used for a semiconductor element surface protective film, for a surface protective film of a semiconductor device and a light emitting device, for a flip chip device. It can be suitably used as a protective film, a protective film of a device having a bump structure, and as an interlayer insulating film, for a rewiring insulating film, an interlayer insulating film of a multilayer circuit, or the like.
- the phenol composition according to the second aspect of the present invention includes a surface protective film for a semiconductor device and a light emitting device, an interlayer insulating film, an insulating film for rewiring, a protective film for a flip chip device, a protective film for a device having a bump structure, and a multilayer It can be suitably used as an interlayer insulating film of a circuit, a cover coat of a flexible copper-clad plate, a solder resist film, a liquid crystal alignment film, and the like.
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Abstract
Description
すなわち、本発明の第一の態様は以下の通りのものである。
主鎖にビフェニルジイル構造を有するフェノール樹脂(A):100質量部;
光酸発生剤(B):1~30質量部;及び
上記光酸発生剤(B)から発生した酸、又は熱により、上記(A)成分と反応しうる化合物(C):1~60質量部;
を含有する、半導体素子表面保護膜又は層間絶縁膜用の感光性樹脂組成物。
半導体基板上に、[1]~[7]のいずれか一つに記載の感光性樹脂組成物から成る感光性樹脂層を形成する工程、
該感光性樹脂層を活性光線で露光する工程、
該露光された感光性樹脂層を現像してレリーフパターンを得る工程、及び
得られたレリーフパターンを加熱する工程
を含む、半導体装置の製造方法。
すなわち、本発明の第二の態様は以下の通りのものである。
該組成物をシリコンウエハー上にスピンコートして、ホットプレート上において該シリコンウエハー及びスピンコート膜を100℃で3分間加熱して、窒素雰囲気下において該スピンコート膜を250℃で1時間硬化して厚さ10μmの硬化物を得て、該硬化物を3mm幅でダイシングソーにより切断して、23質量%フッ酸水溶液で処理することにより該シリコンウエハーを剥離して、温度23℃・湿度50%の雰囲気に24時間以上静置して20本のサンプルを得て、該20本のサンプルを引っ張り試験機により測定したときに該サンプルの引っ張り伸度の上位5点の平均値が20%以上であることを特徴とする、前記フェノール樹脂組成物。
[10]半導体素子表面保護膜又は層間絶縁膜の製造における[1]~[6]のいずれか1項に記載のフェノール樹脂組成物の使用。
本発明の第一の態様における感光性樹脂組成物(以下、単に「第一の組成物」ともいう。)は、溶剤中に、以下の成分(A)~(C):主鎖にビフェニルジイル構造を有するフェノール樹脂(A):100質量部;光酸発生剤(B):1~30質量部;光酸発生剤(B)から発生した酸、又は熱により、(A)成分と反応しうる化合物(C):1~60質量部;を含有することを特徴とする。
第一の組成物に用いられる主鎖にビフェニルジイル構造を有するフェノール樹脂(A)(以下、単に「ビフェニルジイル-フェノール樹脂」ともいう。)は、フェノール構造及びビフェニルジイル構造を有する繰り返し単位を含むポリマーである。フェノール構造とビフェニルジイル構造とは任意の順で結合していてもよい。フェノール構造とビフェニルジイル構造とは、メチレン基を介して結合していることが更なる伸度の観点から好ましい。
第一の組成物は、紫外線、電子線、X線をはじめとする放射線に感応して樹脂パターンを形成できる組成物であれば、特に限定されるものではなく、ネガ型、ポジ型のいずれの感光性組成物であってもよい。
トリス(2,4,6-トリクロロメチル)-s-トリアジン、2-フェニル-ビス(4,6-トリクロロメチル)-s-トリアジン、2-(3-クロロフェニル)-ビス(4,6-トリクロロメチル)-s-トリアジン、2-(2-クロロフェニル)-ビス(4,6-トリクロロメチル)-s-トリアジン、2-(4-メトキシフェニル)-ビス(4,6-トリクロロメチル)-s-トリアジン、2-(3-メトキシフェニル)-ビス(4,6-トリクロロメチル)-s-トリアジン、2-(2-メトキシフェニル)-ビス(4,6-トリクロロメチル)-s-トリアジン、2-(4-メチルチオフェニル)-ビス(4,6-トリクロロメチル)-s-トリアジン、2-(3-メチルチオフェニル)ビス(4,6-トリクロロメチル-s-トリアジン、2-(2-メチルチオフェニル)-ビス(4,6-トリクロロメチル)-s-トリアジン、2-(4-メトキシナフチル)-ビス(4,6-トリクロロメチル)-s-トリアジン、2-(3-メトキシナフチル)-ビス(4,6-トリクロロメチル)-s-トリアジン、2-(2-メトキシナフチル)-ビス(4,6-トリクロロメチル)-s-トリアジン、2-(3,4,5-トリメトキシ-β-スチリル)-ビス(4,6-トリクロロメチル)-s-トリアジン、2-(4-メチルチオ-β―スチリル)-ビス(4,6-トリクロロメチル)-s-トリアジン、2-(3-メチルチオ-β―スチリル)-ビス(4,6-トリクロロメチル)-s-トリアジン、2-(2-メチルチオ-β-スチリル)-ビス(4,6-トリクロロメチル)-s-トリアジン等;
ジフェニルヨードニウムテトラフルオロボレート、ジフェニルヨードニウムテトラフルオロホスフェート、ジフェニルヨードニウムテトラフルオロアルセネート、ジフェニルヨードニウムトリフルオロメタンスルホナート、ジフェニルヨードニウムトリフルオロアセテート、ジフェニルヨードニウム-p-トルエンスルホナート、4-メトキシフェニルフェニルヨードニウムテトラフルオロボレート、4-メトキシフェニルフェニルヨードニウムヘキサフルオロホスホネート、4-メトキシフェニルフェニルヨードニウムヘキサフルオロアルセネート、4-メトキシフェニルフェニルヨードニウムトリフルオロメタンスホナート、4-メトキシフェニルフェニルヨードニウムトリフルオロアセテート、4-メトキシフェニルフェニルヨードニウム-p-トルエンスルホナート、ビス(4-ter-ブチルフェニル)ヨードニウムテトラフルオロボレート、ビス(4-ter-ブチルフェニル)ヨードニウムヘキサフルオロアルセネート、ビス(4-ter-ブチルフェニル)ヨードニウムトリフルオロメタンスルホナート、ビス(4-ter-ブチルフェニル)ヨードニウムトリフルオロアセテート、ビス(4-ter-ブチルフェニル)ヨードニウム-p-トルエンスルホナート等;
トリフェニルスルホニウムテトラフルオロボレート、トリフェニルスルホニウムヘキサフルオロホスホネート、トリフェニルスルホニウムヘキサフルオロアルセネート、トリフェニルスルホニウムメタンスルホナート、トリフェニルスルホニウムトリフルオロアセテート、トリフェニルスルホニウム-p-トルエンスルホナート、4-メトキシフェニルジフェニルスルホニウムテトラフルオロボレート、4-メトキシフェニルジフェニルスルホニウムヘキサフルオロホスホネート、4-メトキシフェニルジフェニルスルホニウムヘキサフルオロアルセネート、4-メトキシフェニルジフェニルスルホニウムメタンスルホナート、4-メトキシフェニルジフェニルスルホニウムトリフルオロアセテート、4-メトキシフェニルジフェニルスルホニウム-p-トルエンスルホナート、4-フェニルチオフェニルジフェニルテトラフルオロボレート、4-フェニルチオフェニルジフェニルヘキサフルオロホスホネート、4-フェニルチオフェニルジフェニルヘキサフルオロアルセネート、4-フェニルチオフェニルジフェニルトリフルオロメタンスルホナート、4-フェニルチオフェニルジフェニルトリフルオロアセテート、4-フェニルチオフェニルジフェニルーp-トルエンスルホナート等。
ジアゾケトン化合物として、例えば、1,3-ジケト-2-ジアゾ化合物、ジアゾベンゾキノン化合物、ジアゾナフトキノン化合物等を挙げることができ、具体例としてはフェノール類の1,2-ナフトキノンジアジド-4-スルホン酸エステル化合物を挙げることができる。
スルホン化合物として、例えば、β-ケトスルホン化合物、β-スルホニルスルホン化合物及びこれらの化合物のα-ジアゾ化合物を挙げることができ、具体例として、4-トリスフェナシルスルホン、メシチルフェナシルスルホン、ビス(フェナシルスルホニル)メタン等を挙げることができる。
スルホン酸化合物として、例えば、アルキルスルホン酸エステル類、ハロアルキルスルホン酸エステル類、アリールスルホン酸エステル類、イミノスルホネート類等を挙げることができる。好ましい具体例としては、ベンゾイントシレート、ピロガロールトリストリフルオロメタンスルホネート、o-ニトロベンジルトリフルオロメタンスルホネート、o-ニトロベンジル-p-トルエンスルホネート等を挙げることができる。
スルホンイミド化合物として、例えば、N-(トリフルオロメチルスルホニルオキシ)スクシンイミド、N-(トリフルオロメチルスルホニルオキシ)フタルイミド、N-(トリフルオロメチルスルホニルオキシ)ジフェニルマレイミド、N-(トリフルオロメチルスルホニルオキシ)ビシクロ[2.2.1]ヘプト-5-エン-2,3-ジカルボキシイミド、N-(トリフルオロメチルスルホニルオキシ)ナフチルイミド等を挙げることができる。
オキシムエステル化合物として、具体的には、2-[2-(4-メチルフェニルスルホニルオキシイミノ)]-2,3-ジヒドロチオフェン-3-イリデン]-2-(2-メチルフェニル)アセトニトリル(チバスペシャルティケミカルズ社商品名「イルガキュアPAG121」)、[2-(プロピルスルホニルオキシイミノ)-2,3-ジヒドロチオフェン-3-イリデン]-2-(2-メチルフェニル)アセトニトリル(チバスペシャルティケミカルズ社商品名「イルガキュアPAG103」)、[2-(n-オクタンスルホニルオキシイミノ)-2,3-ジヒドロチオフェン-3-イリデン]-2-(2-メチルフェニル)アセトニトリル(チバスペシャルティケミカルズ社商品名「イルガキュアPAG108」)、α-(n-オクタンスルホニルオキシイミノ)-4-メトキシベンジルシアニド(チバスペシャルティケミカルズ社商品名「CGI725」)等を挙げることができる。
ジアゾメタン化合物として、具体的には、ビス(トリフルオロメチルスルホニル)ジアゾメタン、ビス(シクロヘキシルスルホニル)ジアゾメタン、ビス(フェニルスルホニル)ジアゾメタン等を挙げることができる。
光酸発生剤(B)から発生した酸、又は熱の作用により(A)成分のビフェニルジイル-フェノール樹脂と反応し得る化合物(以下、単に「架橋剤」ともいう。)を、(A)成分と(B)成分に添加すると、塗膜を加熱硬化する際に、機械物性、耐熱性、耐薬品性などの膜性能を強化することができる。膜性能を十分に強化するためには、架橋剤は、好ましくは、エポキシ基、オキセタン基、-N-(CH2-OR’)基{式中、R’は、水素又は炭素数1~4のアルキル基である。}、及び-C-(CH2-OR’)基{式中、R’は、水素又は炭素数1~4のアルキル基である。}から成る群から選ばれる少なくとも2つの基を有する化合物である。
第一の組成物は、硬化膜の物性向上の観点から、(D)熱塩基発生剤を更に含有することができる。特に、(C)成分である架橋剤がエポキシ基又はオキセタン基を含有する場合、熱硬化の時に、(C)成分である架橋剤と(A)成分である樹脂との間の架橋反応が促進され、第一の組成物の膜物性がより一層強化することができるため、(D)熱塩基発生剤を更に含有することが好ましい。第一の組成物に使用する熱塩基発生剤の熱分解温度としては50℃以上、好ましくは70℃以上、より好ましくは90℃以上である。(D)熱塩基発生剤としては、具体的には、下記式で示される化合物を挙げることができる。
第一の組成物に用いられる溶剤としては、アミド類、スルホキシド類、ウレア類、ケトン類、エステル類、ラクトン類、エーテル類、ハロゲン化炭化水素類、炭化水素類等が挙げられ、例えば、溶剤として、N-メチル-2-ピロリドン、N,N-ジメチルアセトアミド、N,N-ジメチルホルムアミド、ジメチルスルホキシド、テトラメチル尿素、アセトン、メチルエチルケトン、メチルイソブチルケトン、シクロペンタノン、シクロヘキサノン、酢酸メチル、酢酸エチル、酢酸ブチル、シュウ酸ジエチル、乳酸エチル、乳酸メチル、乳酸ブチル、γ-ブチロラクトン、プロピレングリコールモノメチルエーテルアセテート、プロピレングリコールモノメチルエーテル、ベンジルアルコール、フェニルグリコール、テトラヒドロフルフリルアルコール、エチレングリコールジメチルエーテル、ジエチレングリコールジメチルエーテル、テトラヒドロフラン、モルフォリン、ジクロロメタン、1,2-ジクロロエタン、1,4-ジクロロブタン、クロロベンゼン、o-ジクロロベンゼン、アニソール、ヘキサン、ヘプタン、ベンゼン、トルエン、キシレン、メシチレン等を使用することができる。
第一の組成物には、必要に応じて、染料、界面活性剤、基板との密着性を高めるための接着助剤、溶解促進剤、架橋促進剤等を含有させることができる。
以下、第一の組成物に感光剤を加えた際に基板上に硬化レリーフパターンを形成する方法の一例を示す。
上述の硬化レリーフパターンを、表面保護膜、層間絶縁膜、再配線用絶縁膜、フリップチップ装置用保護膜、バンプ構造を有する装置の保護膜として用い、さらに、公知の半導体装置の製造方法における工程と組み合わせることで、本発明の第一の態様における半導体装置を製造することができる。
本発明の第一の態様では、上記第一の組成物を用いて半導体素子表面保護膜又は層間絶縁膜を製造することができる。また、本発明の第一の態様は、半導体素子表面保護膜又は層間絶縁膜の製造における上記第一の組成物の使用にも関する。
半導体装置に適用される表面保護膜又は層間絶縁膜の信頼性とは、半導体装置作製の後工程における、スパッタ、アニーリング、エッチング、表面保護膜の硬化(キュア)、ダイアタッチフィルムとの接着、半導体チップ間の接続、半導体チップとインターポーザーとの接続、ワイヤーボンディング、アンダーフィルの注入、封止樹脂によるモールディング、半田リフロー、バーンインなどの一連の工程を経ても半導体装置として正常に作動することであり、信頼性は表面保護膜又は層間絶縁膜の総合的な性能であると考えられている。
フェノール樹脂組成物をシリコンウエハー上にスピンコートし、ホットプレート上において該シリコンウエハー及びスピンコート膜を100℃で3分間加熱して、窒素雰囲気下において該スピンコート膜を250℃で1時間硬化して厚さ10μmの硬化物を得る。この硬化物を3mm幅でダイシングソーにより切断して、23質量%フッ酸水溶液で処理することによりシリコンウエハーを剥離して、さらに温度23℃・湿度50%の雰囲気に24時間以上静置して、20本のサンプルを得て、引っ張り試験機(例えば、テンシロン(登録商標、オリンテック社製))にて各サンプルの引っ張り伸度を測定し、20本のサンプルの結果のうち、上位5点のサンプルの平均値を得る。引っ張り試験機の測定条件は以下の通りとする。
温度:23℃
湿度:50%
初期試料長さ:50mm
試験速度:40mm/min.
ロードセル定格:2kgf
また、本発明の第二の態様では、フェノール樹脂組成物を熱硬化した膜のヤング率は、より低い方がより小さな応力でも膜が変形し始めることができ、応力緩和機能を発揮できるため好適であり、ヤング率が4.0GPa未満であることが好ましく、3.5GPa未満であることがより好ましく、3.0GPa未満であることが最も好ましい。一方、膜の耐熱性等を考慮するとヤング率が1.0GPa以上であることが好ましく、1.5GPa以上であることがより好ましい。
<ヤング率測定法>
上記、引っ張り伸度測定法と同条件で、製膜、サンプル作製、測定を行い、得られたS-S曲線よりJIS K 7161に従って求め、20本の試料の値の中の下位5点のサンプルの平均値を採用する。
本発明の第二の態様におけるフェノール樹脂組成物(以下、「第二の組成物」ともいう。)とは、組成物中に含まれる重量平均分子量が1,500以上の樹脂のうち、フェノール樹脂を55質量%以上、好ましくは75質量%以上、より好ましくは95質量%以上、最も好ましくは100質量%含むものをいう。
第二の組成物に用いられるフェノール樹脂は、その繰り返し単位にフェノール誘導体を含む高分子化合物である。フェノール樹脂としては、具体的には、フェノール誘導体に対し、アルデヒド化合物、ケトン化合物、メチロール化合物、又はアルコキシメチル化合物を重合させて得られる樹脂;、フェノール-ジエン系重合樹脂;、ポリヒドロキシスチレン系樹脂;、及びこれらの樹脂の誘導体が挙げられる。また、第二の組成物に用いられるフェノール樹脂の重量平均分子量は、1,500以上である。
第二の組成物に用いられる溶剤としては、アミド類、スルホキシド類、ウレア類、ケトン類、エステル類、ラクトン類、エーテル類、ハロゲン化炭化水素類、炭化水素類等が挙げられ、例えば、N-メチル-2-ピロリドン、N,N-ジメチルアセトアミド、N,N-ジメチルホルムアミド、ジメチルスルホキシド、テトラメチル尿素、アセトン、メチルエチルケトン、メチルイソブチルケトン、シクロペンタノン、シクロヘキサノン、酢酸メチル、酢酸エチル、酢酸ブチル、シュウ酸ジエチル、乳酸エチル、乳酸メチル、乳酸ブチル、γ-ブチロラクトン、プロピレングリコールモノメチルエーテルアセテート、プロピレングリコールモノメチルエーテル、ベンジルアルコール、フェニルグリコール、テトラヒドロフルフリルアルコール、エチレングリコールジメチルエーテル、ジエチレングリコールジメチルエーテル、テトラヒドロフラン、モルフォリン、ジクロロメタン、1,2-ジクロロエタン、1,4-ジクロロブタン、クロロベンゼン、o-ジクロロベンゼン、アニソール、ヘキサン、ヘプタン、ベンゼン、トルエン、キシレン、メシチレン等を使用することができる。中でも、樹脂の溶解性、樹脂組成物の安定性、基板への接着性の観点から、N-メチル-2-ピロリドン、ジメチルスルホキシド、テトラメチル尿素、酢酸ブチル、乳酸エチル、γ-ブチロラクトン、プロピレングリコールモノメチルエーテルアセテート、プロピレングリコールモノメチルエーテル、ベンジルアルコール、フェニルグリコール、テトラヒドロフルフリルアルコールが好ましい。
第二の組成物には架橋剤が含有されていることが好ましい。架橋剤としては、1,1,2,2-テトラ(p-ヒドロキシフェニル)エタンテトラグリシジルエーテル、グリセロールトリグリシジルエーテル、オルソセカンダリーブチルフェニルグリシジルエーテル、1,6-ビス(2,3-エポキシプロポキシ)ナフタレン、ジグリセロールポリグリシジルエーテル、ポリエチレングリコールグリシジルエーテル、イソシアヌル酸トリグリシジル、エピクロン830、850、1050、N-680、N-690、N-695、N-770、HP-7200、HP-820、EXA-4850-1000(商品名、DIC社製)、デナコールEX-201、EX-313、EX-314、EX-321、EX-411、EX-511、EX-512、EX-612、EX-614、EX-614B、EX-731、EX-810、EX-911、EM-150(商品名、ナガセケムテックス社製)等のエポキシ化合物、キシリレンビスオキセタン、3-エチル-3{[(3-エチルオキセタン―イル)メトキシ]メチル}オキセタン等のオキセタン化合物、
第二の組成物には、感光剤が含有されていることが好ましい。感光剤の種類を選択することにより、第二の組成物をポジ型にすることもできるし、ネガ型とすることもできる。第二の組成物をポジ型にする場合は、感光剤として光酸発生剤を選ぶことが必要である。光酸発生剤としてはナフトキノンジアジド(NQD)化合物、オニウム塩、ハロゲン含有化合物等を用いることができるが、溶剤溶解性及び保存安定性の観点から、後述のNQD構造を有する光活性化合物が好ましい。
第二の組成物には、必要に応じて、染料、界面活性剤、基板との密着性を高めるための接着助剤、溶解促進剤、架橋促進剤等を含有させることが可能である。
第二の組成物として、感光剤を含有する組成物を用いた場合における基板上に硬化レリーフパターンを形成する方法の一例を以下に示す。
また、半導体素子と、該半導体素子の上部に設けられた硬化膜とを備え、該硬化膜は、第二の組成物を用いて製造した硬化レリーフパターンである半導体装置も本発明の第二の態様である。本発明の第二の態様の半導体装置は、上述の硬化レリーフパターンを、表面保護膜、層間絶縁膜、再配線用絶縁膜、フリップチップ装置用保護膜、又はバンプ構造を有する装置の保護膜として、公知の半導体装置の製造方法と組み合わせることで製造することができる。また、本発明の第二の態様は、半導体素子表面保護膜又は層間絶縁膜の製造における上記第二の組成物の使用にも関する。
以下、本発明の第一の態様を実施例により具体的に説明するが、本発明はこれらに限定されるものではない。
[実施例1~7、比較例1~4]
本発明の実施例及び比較例において使用した各成分は、それぞれ以下のものであった。
A-1:明和化成株式会社製MEH-7851 4H (重量平均分子量=9986)
A-2:明和化成株式会社製MEH-7851 H (重量平均分子量=2769)
使用したGPC装置及び測定条件は以下の通りであった。
ポンプ:JASCO PU-980
検出器:JASCO RI-930
カラムオーブン:JASCO CO-965 40℃
カラム:Shodex KD-806M 直列に2本
移動相:0.1mol/l EtBr/NMP
流速:1ml/min.
C-1:三和ケミカル株式会社製 ニカラックMX-390
C-2:三和ケミカル株式会社製 ニカラックMX-270
C-3:ナガセケムテックス株式会社製 デナコールEX-321L
C-4:宇部興産株式会社製 ETERNACOLL OXBP
γ-ブチロラクトン(GBL)
実施例1~7と比較例1~4の組成を、以下の表1に示す。
表中の数字は各組成分の添加質量部を示す。各組成分を混合溶解した後、0.2μmのテフロン(登録商標)フィルターで濾過して感光性ワニスを得た。
本発明の伸度測定用サンプルを以下の方法で作製した。
最表面にアルミ蒸着層を設けた6インチシリコンウエハー基板に、本発明の実施例及び比較例で得られた感光性樹脂組成物を、硬化後の膜厚が約10μmとなるように回転塗布し、窒素雰囲気下250℃で2時間加熱して、樹脂硬化膜を得た。得られた樹脂硬化膜を、ダイシングソーで3mm幅にカットした後に、希塩酸水溶液によりウエハーから剥離し、得られる20本の試料を温度23℃、湿度50%の雰囲気に24時間以上静置後、引っ張り試験機(例えば、テンシロン)にて伸度を測定した。引っ張り試験機の測定条件は以下の通りであった。
温度:23℃
湿度:50%
初期試料長さ:50mm
試験速度:40mm/min
ロードセル定格:2kgf
(A)成分としてビフェニルジイル-フェノール樹脂を使用した実施例1~7では、硬化膜の平均伸度(サンプル20点平均値)が8%以上という高い値を示した。これに対し、(A)成分の骨格中にビフェニルジイル構造を有しない比較例1~4では、硬化膜の平均伸度は低かった。
本発明の第二の態様
以下、参考例により本発明の第二の態様を具体的に説明するが、本発明の第二の態様はこれに限定されるものではない。
1Lのセパラブルフラスコにフェノール141.2g(1.5mol)を入れ、窒素気流下で撹拌しながら、オイルバスで80℃に加熱し、三フッ化ホウ素・フェノール錯体3.0gを添加し、さらに130℃に昇温して、ジシクロペンタジエン132.2g(1.0mol)を2時間かけて滴下した。滴下終了後、さらに130℃で5時間撹拌した。
1LのセパラブルフラスコにEP4080G(クレゾールノボラック樹脂、商品名、旭有機材工業社製)75g、ピリジン19.8g(0.25mol)及びガンマブチロラクトン(GBL)125gを入れ、撹拌しながらプロピオニルクロリド23.1g(0.25mol)を10分間かけて滴下した。滴下終了後、室温で8時間撹拌した。
調製例2のピリジン、及びプロピオニルクロリドの量を各々39.6g(0.50mol)、46.3g(0.50mol)とした以外は同様の操作を行い、クレゾールノボラックの水酸基の76%をブロックした樹脂(P-3)を得た。
P-3で水酸基の76%がブロックされていることは、1H-NMRにおいて、9ppm付近の水酸基のピーク強度が、未処理のEP4080Gと比較して76%減少していることで確認した。P-3のGPCによる重量平均分子量(Mw、ポリスチレン換算)は5100であった。
500mLのセパラブルフラスコに二炭酸ジ-t-ブチル43.7g(0.2mol)、4-N,N-ジメチルアミノピリジン0.25g(0.002mol)を入れ、撹拌しながらN,N’-ジエチル-1,6-ジアミノヘキサン17.2g(0.1mol)を10分間かけて滴下した。滴下終了後、50℃に昇温して8時間撹拌した。
表2に示す各成分を混合して均一溶液とした後、孔径1μmのメンブレンフィルターでろ過して、フェノール樹脂組成物溶液を調製した。
MEH-7851-4H(フェノール-ビフェニレン樹脂、商品名、明和化成社製)
MEH-7851-M(フェノール-ビフェニレン樹脂、商品名、明和化成社製)
MEH-7851-SS(フェノール-ビフェニレン樹脂、商品名、明和化成社製)
MEH-7500(フェノール-サリチルアルデヒド樹脂、商品名、明和化成社製)
EP4020G(クレゾールノボラック、商品名、旭有機材工業社製)
EP4080G(クレゾールノボラック、商品名、旭有機材工業社製)
架橋剤
MX-270(ニカラックMX-270、商品名、三和ケミカル社製)
EX-321(デナコールEX-321、商品名、ナガセケムテックス社製)
感光剤
TPPA{以下:
<Mw>
ゲルパーミエイションクロマトグラフィー(GPC)により、標準ポリスチレン換算で算出した。使用したGPC装置及び測定条件は以下の通りである。
ポンプ:JASCO PU-980
検出器:JASCO RI-930
カラムオーブン:JASCO CO-965 40℃
カラム:Shodex KD-806M 直列に2本
移動相:0.1mol/l EtBr/NMP
流速:1ml/min.
フェノール樹脂の繰り返し単位の化学構造式を書き、各々の数を数えて計算する。この時、フェノールユニットの反応位置が3つ以上あっても、そのうちの2つしか反応しないと仮定する。例えば、MEH-7851の場合、フェノールはアルデヒド化合物と主に2,4,6‐位で反応する可能性があるが、そのうちの2,6-位のみで反応しているとすると、繰り返し単位の化学構造式は、以下:
従って、(酸素原子+窒素原子)/炭素原子=1/20=0.050
フェノール樹脂を混合した場合は、各々について、上記計算をした後、混合比に応じてその加重平均を取った。
<サーマルサイクル(TC)試験>
フェノール樹脂組成物をシリコンウエハー上にスピンコートし、100℃のホットプレートで3分間加熱した後、窒素雰囲気下で250℃で1時間硬化を行い、厚さ10μmの硬化膜を得た。これをサーマルサイクルチャンバーTSE-11(エスペック社製)を使用して、-65℃~135℃で30分ずつ、1000サイクルの試験を行った後、膜表面を光学顕微鏡で観察した。膜にクラックがないものを○、あるものを×とした。
フェノール樹脂組成物をシリコンウエハー上にスピンコートし、100℃のホットプレートで3分間加熱した後、窒素雰囲気下で250℃で1時間硬化を行い、厚さ10μmの硬化膜を得た。これをダイシングソーで3mm幅にカットした後に、23%フッ酸水溶液を用いてシリコンウエハーから剥離して得られる20本の試料を温度23℃、湿度50%の雰囲気に24時間以上静置後、万能試験機テンシロンUTM-II-20(オリエンテック社製)にて測定し、上位5点の平均値を採用した。引っ張り試験機の測定条件は以下の通りである。
温度:23℃
湿度:50%
初期試料長さ:50mm
試験速度:40mm/min.
ロードセル定格:2kgf
表1の結果より明らかなように、引っ張り伸度が20%以上であるものは、TC試験でクラックが生じない。また、そのような結果が出るフェノール樹脂は(酸素原子+窒素原子)/炭素原子の割合が小さく、これは引っ張り伸度を向上させるための一般的な手法である分子量の大きさとは相関しない。
Claims (11)
- 溶剤中に、以下の成分:
主鎖にビフェニルジイル構造を有するフェノール樹脂(A):100質量部;
光酸発生剤(B):1~30質量部;及び
上記光酸発生剤(B)から発生した酸、又は熱により、上記(A)成分と反応しうる化合物(C):1~60質量部;
を含有する、半導体素子表面保護膜又は層間絶縁膜用の感光性樹脂組成物。 - 前記フェノール樹脂(A)の繰り返しユニットの繰り返し単位数が8以上100以下である、請求項1又は2に記載の感光性樹脂組成物。
- 前記光酸発生剤(B)は、フェノール化合物と1,2-ナフトキノン-2-ジアジド-5-スルホン酸又は1,2-ナフトキノン-2-ジアジド-4-スルホン酸とのエステル化合物である、請求項1又は2に記載の感光性樹脂組成物。
- 前記化合物(C)は、エポキシ基、オキセタン基、-N-(CH2-OR’)基{式中、R’は、水素又は炭素数1~4のアルキル基である。}、及び-C-(CH2-OR’)基{式中、R’は、水素又は炭素数1~4のアルキル基である。}から成る群から選ばれる少なくとも2つの基を有する、請求項1又は2に記載の感光性樹脂組成物。
- 熱塩基発生剤(D)をさらに含有する、請求項1又は2に記載の感光性樹脂組成物。
- 以下の工程:
半導体基板上に、請求項1又は2に記載の感光性樹脂組成物から成る感光性樹脂層を形成する工程、
該感光性樹脂層を活性光線で露光する工程、
該露光された感光性樹脂層を現像してレリーフパターンを得る工程、及び
得られたレリーフパターンを加熱する工程
を含む、半導体装置の製造方法。 - 請求項8に記載の方法により製造された半導体装置。
- 請求項1又は2に記載の感光性樹脂組成物を用いて半導体素子表面保護膜又は層間絶縁膜を製造する方法。
- 半導体素子表面保護膜又は層間絶縁膜の製造における請求項1又は2に記載の感光性樹脂組成物の使用。
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JP2022008428A (ja) * | 2016-04-14 | 2022-01-13 | 旭化成株式会社 | 感光性樹脂組成物、硬化レリーフパターンの製造方法及び半導体装置 |
JP7293299B2 (ja) | 2016-04-14 | 2023-06-19 | 旭化成株式会社 | 感光性樹脂組成物、硬化レリーフパターンの製造方法及び半導体装置 |
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KR20150047632A (ko) | 2015-05-04 |
TWI481657B (zh) | 2015-04-21 |
KR20130054366A (ko) | 2013-05-24 |
US9029270B2 (en) | 2015-05-12 |
KR20170123352A (ko) | 2017-11-07 |
TW201224046A (en) | 2012-06-16 |
US20130168829A1 (en) | 2013-07-04 |
KR101827069B1 (ko) | 2018-02-07 |
CN103097460A (zh) | 2013-05-08 |
KR102032629B1 (ko) | 2019-10-15 |
CN103097460B (zh) | 2015-10-21 |
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