JP2018205411A - Photosensitive resin composition, and photosensitive element - Google Patents
Photosensitive resin composition, and photosensitive element Download PDFInfo
- Publication number
- JP2018205411A JP2018205411A JP2017107852A JP2017107852A JP2018205411A JP 2018205411 A JP2018205411 A JP 2018205411A JP 2017107852 A JP2017107852 A JP 2017107852A JP 2017107852 A JP2017107852 A JP 2017107852A JP 2018205411 A JP2018205411 A JP 2018205411A
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- JP
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- Prior art keywords
- resin composition
- photosensitive resin
- photosensitive
- ethylenically unsaturated
- unsaturated group
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000011342 resin composition Substances 0.000 title claims abstract description 51
- 239000003822 epoxy resin Substances 0.000 claims abstract description 63
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 63
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical group C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims abstract description 41
- 150000001875 compounds Chemical class 0.000 claims abstract description 23
- 239000004305 biphenyl Substances 0.000 claims abstract description 21
- 235000010290 biphenyl Nutrition 0.000 claims abstract description 21
- 238000009413 insulation Methods 0.000 claims abstract description 21
- 239000004020 conductor Substances 0.000 claims abstract description 11
- 239000003999 initiator Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 51
- 239000010410 layer Substances 0.000 claims description 50
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 36
- 229910052802 copper Inorganic materials 0.000 claims description 33
- 239000010949 copper Substances 0.000 claims description 33
- -1 acid-modified epoxy acrylate compound Chemical class 0.000 claims description 32
- 238000007747 plating Methods 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 19
- 229920005989 resin Polymers 0.000 claims description 19
- 239000011347 resin Substances 0.000 claims description 19
- 239000011229 interlayer Substances 0.000 claims description 14
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 12
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 8
- 238000005530 etching Methods 0.000 claims description 8
- 239000011810 insulating material Substances 0.000 claims description 8
- 150000001451 organic peroxides Chemical class 0.000 claims description 8
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 4
- 239000005062 Polybutadiene Substances 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 229920002857 polybutadiene Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 5
- 239000012774 insulation material Substances 0.000 abstract 1
- 239000000758 substrate Substances 0.000 description 22
- 239000000243 solution Substances 0.000 description 20
- 238000011161 development Methods 0.000 description 18
- 230000015572 biosynthetic process Effects 0.000 description 11
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 11
- 238000011156 evaluation Methods 0.000 description 11
- 239000011256 inorganic filler Substances 0.000 description 11
- 229910003475 inorganic filler Inorganic materials 0.000 description 11
- 238000007788 roughening Methods 0.000 description 11
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000001723 curing Methods 0.000 description 9
- 229920003986 novolac Polymers 0.000 description 9
- 229920003192 poly(bis maleimide) Polymers 0.000 description 9
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000000126 substance Substances 0.000 description 8
- 239000007787 solid Substances 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- FPZWZCWUIYYYBU-UHFFFAOYSA-N 2-(2-ethoxyethoxy)ethyl acetate Chemical compound CCOCCOCCOC(C)=O FPZWZCWUIYYYBU-UHFFFAOYSA-N 0.000 description 6
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 239000000654 additive Substances 0.000 description 6
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical class C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 6
- 239000003960 organic solvent Substances 0.000 description 6
- KCTAWXVAICEBSD-UHFFFAOYSA-N prop-2-enoyloxy prop-2-eneperoxoate Chemical class C=CC(=O)OOOC(=O)C=C KCTAWXVAICEBSD-UHFFFAOYSA-N 0.000 description 6
- 229910010413 TiO 2 Inorganic materials 0.000 description 5
- 238000007772 electroless plating Methods 0.000 description 5
- 229910052753 mercury Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 5
- VVBLNCFGVYUYGU-UHFFFAOYSA-N 4,4'-Bis(dimethylamino)benzophenone Chemical compound C1=CC(N(C)C)=CC=C1C(=O)C1=CC=C(N(C)C)C=C1 VVBLNCFGVYUYGU-UHFFFAOYSA-N 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 239000011247 coating layer Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 4
- KMOUUZVZFBCRAM-OLQVQODUSA-N (3as,7ar)-3a,4,7,7a-tetrahydro-2-benzofuran-1,3-dione Chemical compound C1C=CC[C@@H]2C(=O)OC(=O)[C@@H]21 KMOUUZVZFBCRAM-OLQVQODUSA-N 0.000 description 3
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-naphthol Chemical compound C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 description 3
- BTJPUDCSZVCXFQ-UHFFFAOYSA-N 2,4-diethylthioxanthen-9-one Chemical compound C1=CC=C2C(=O)C3=CC(CC)=CC(CC)=C3SC2=C1 BTJPUDCSZVCXFQ-UHFFFAOYSA-N 0.000 description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- 244000028419 Styrax benzoin Species 0.000 description 3
- 235000000126 Styrax benzoin Nutrition 0.000 description 3
- 235000008411 Sumatra benzointree Nutrition 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- MPIAGWXWVAHQBB-UHFFFAOYSA-N [3-prop-2-enoyloxy-2-[[3-prop-2-enoyloxy-2,2-bis(prop-2-enoyloxymethyl)propoxy]methyl]-2-(prop-2-enoyloxymethyl)propyl] prop-2-enoate Chemical compound C=CC(=O)OCC(COC(=O)C=C)(COC(=O)C=C)COCC(COC(=O)C=C)(COC(=O)C=C)COC(=O)C=C MPIAGWXWVAHQBB-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 229960002130 benzoin Drugs 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 239000011162 core material Substances 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 235000019382 gum benzoic Nutrition 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 238000003475 lamination Methods 0.000 description 3
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine powder Natural products NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 3
- 229910052763 palladium Inorganic materials 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- IPJGAEWUPXWFPL-UHFFFAOYSA-N 1-[3-(2,5-dioxopyrrol-1-yl)phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C1=CC=CC(N2C(C=CC2=O)=O)=C1 IPJGAEWUPXWFPL-UHFFFAOYSA-N 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- LWRBVKNFOYUCNP-UHFFFAOYSA-N 2-methyl-1-(4-methylsulfanylphenyl)-2-morpholin-4-ylpropan-1-one Chemical compound C1=CC(SC)=CC=C1C(=O)C(C)(C)N1CCOCC1 LWRBVKNFOYUCNP-UHFFFAOYSA-N 0.000 description 2
- CWLKGDAVCFYWJK-UHFFFAOYSA-N 3-aminophenol Chemical compound NC1=CC=CC(O)=C1 CWLKGDAVCFYWJK-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical class OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 2
- NPKSPKHJBVJUKB-UHFFFAOYSA-N N-phenylglycine Chemical compound OC(=O)CNC1=CC=CC=C1 NPKSPKHJBVJUKB-UHFFFAOYSA-N 0.000 description 2
- 229920001665 Poly-4-vinylphenol Polymers 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 150000008065 acid anhydrides Chemical class 0.000 description 2
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 2
- 239000012965 benzophenone Substances 0.000 description 2
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- DIOQZVSQGTUSAI-UHFFFAOYSA-N decane Chemical compound CCCCCCCCCC DIOQZVSQGTUSAI-UHFFFAOYSA-N 0.000 description 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 2
- VFHVQBAGLAREND-UHFFFAOYSA-N diphenylphosphoryl-(2,4,6-trimethylphenyl)methanone Chemical compound CC1=CC(C)=CC(C)=C1C(=O)P(=O)(C=1C=CC=CC=1)C1=CC=CC=C1 VFHVQBAGLAREND-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 150000007519 polyprotic acids Polymers 0.000 description 2
- UOHMMEJUHBCKEE-UHFFFAOYSA-N prehnitene Chemical compound CC1=CC=C(C)C(C)=C1C UOHMMEJUHBCKEE-UHFFFAOYSA-N 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- SMQUZDBALVYZAC-UHFFFAOYSA-N salicylaldehyde Chemical compound OC1=CC=CC=C1C=O SMQUZDBALVYZAC-UHFFFAOYSA-N 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 229920001187 thermosetting polymer Polymers 0.000 description 2
- CNHDIAIOKMXOLK-UHFFFAOYSA-N toluquinol Chemical compound CC1=CC(O)=CC=C1O CNHDIAIOKMXOLK-UHFFFAOYSA-N 0.000 description 2
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QEQBMZQFDDDTPN-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy benzenecarboperoxoate Chemical compound CC(C)(C)OOOC(=O)C1=CC=CC=C1 QEQBMZQFDDDTPN-UHFFFAOYSA-N 0.000 description 1
- KDGNCLDCOVTOCS-UHFFFAOYSA-N (2-methylpropan-2-yl)oxy propan-2-yl carbonate Chemical compound CC(C)OC(=O)OOC(C)(C)C KDGNCLDCOVTOCS-UHFFFAOYSA-N 0.000 description 1
- RIPYNJLMMFGZSX-UHFFFAOYSA-N (5-benzoylperoxy-2,5-dimethylhexan-2-yl) benzenecarboperoxoate Chemical compound C=1C=CC=CC=1C(=O)OOC(C)(C)CCC(C)(C)OOC(=O)C1=CC=CC=C1 RIPYNJLMMFGZSX-UHFFFAOYSA-N 0.000 description 1
- BLKRGXCGFRXRNQ-SNAWJCMRSA-N (z)-3-carbonoperoxoyl-4,4-dimethylpent-2-enoic acid Chemical compound OC(=O)/C=C(C(C)(C)C)\C(=O)OO BLKRGXCGFRXRNQ-SNAWJCMRSA-N 0.000 description 1
- KYVBNYUBXIEUFW-UHFFFAOYSA-N 1,1,3,3-tetramethylguanidine Chemical compound CN(C)C(=N)N(C)C KYVBNYUBXIEUFW-UHFFFAOYSA-N 0.000 description 1
- NALFRYPTRXKZPN-UHFFFAOYSA-N 1,1-bis(tert-butylperoxy)-3,3,5-trimethylcyclohexane Chemical compound CC1CC(C)(C)CC(OOC(C)(C)C)(OOC(C)(C)C)C1 NALFRYPTRXKZPN-UHFFFAOYSA-N 0.000 description 1
- HSLFISVKRDQEBY-UHFFFAOYSA-N 1,1-bis(tert-butylperoxy)cyclohexane Chemical compound CC(C)(C)OOC1(OOC(C)(C)C)CCCCC1 HSLFISVKRDQEBY-UHFFFAOYSA-N 0.000 description 1
- VZXTWGWHSMCWGA-UHFFFAOYSA-N 1,3,5-triazine-2,4-diamine Chemical compound NC1=NC=NC(N)=N1 VZXTWGWHSMCWGA-UHFFFAOYSA-N 0.000 description 1
- WZCQRUWWHSTZEM-UHFFFAOYSA-N 1,3-phenylenediamine Chemical compound NC1=CC=CC(N)=C1 WZCQRUWWHSTZEM-UHFFFAOYSA-N 0.000 description 1
- QWOZZTWBWQMEPD-UHFFFAOYSA-N 1-(2-ethoxypropoxy)propan-2-ol Chemical compound CCOC(C)COCC(C)O QWOZZTWBWQMEPD-UHFFFAOYSA-N 0.000 description 1
- YJRFXMPDMSFPRE-UHFFFAOYSA-N 1-(2-methylmorpholin-4-yl)-2-(4-methylsulfanylphenyl)propan-1-one Chemical compound C1=CC(SC)=CC=C1C(C)C(=O)N1CC(C)OCC1 YJRFXMPDMSFPRE-UHFFFAOYSA-N 0.000 description 1
- PKMQILYAVOQEJG-UHFFFAOYSA-N 1-[2-[2,6-ditert-butyl-4-[2-[3,5-ditert-butyl-4-[2-(2,5-dioxopyrrol-1-yl)phenoxy]phenyl]propan-2-yl]phenoxy]phenyl]pyrrole-2,5-dione Chemical compound CC(C)(C1=CC(=C(C(=C1)C(C)(C)C)OC1=C(C=CC=C1)N1C(C=CC1=O)=O)C(C)(C)C)C1=CC(=C(C(=C1)C(C)(C)C)OC1=C(C=CC=C1)N1C(C=CC1=O)=O)C(C)(C)C PKMQILYAVOQEJG-UHFFFAOYSA-N 0.000 description 1
- AQGZJQNZNONGKY-UHFFFAOYSA-N 1-[4-(2,5-dioxopyrrol-1-yl)phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C1=CC=C(N2C(C=CC2=O)=O)C=C1 AQGZJQNZNONGKY-UHFFFAOYSA-N 0.000 description 1
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- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 229940018564 m-phenylenediamine Drugs 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000002816 methylsulfanyl group Chemical group [H]C([H])([H])S[*] 0.000 description 1
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- UQKAOOAFEFCDGT-UHFFFAOYSA-N n,n-dimethyloctan-1-amine Chemical compound CCCCCCCCN(C)C UQKAOOAFEFCDGT-UHFFFAOYSA-N 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000004843 novolac epoxy resin Substances 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 150000002923 oximes Chemical class 0.000 description 1
- AFEQENGXSMURHA-UHFFFAOYSA-N oxiran-2-ylmethanamine Chemical compound NCC1CO1 AFEQENGXSMURHA-UHFFFAOYSA-N 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- ZMLDXWLZKKZVSS-UHFFFAOYSA-N palladium tin Chemical compound [Pd].[Sn] ZMLDXWLZKKZVSS-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 150000004841 phenylimidazoles Chemical class 0.000 description 1
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 description 1
- 150000004714 phosphonium salts Chemical class 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
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- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 150000008442 polyphenolic compounds Chemical class 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
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- 239000011164 primary particle Substances 0.000 description 1
- AABBHSMFGKYLKE-SNAWJCMRSA-N propan-2-yl (e)-but-2-enoate Chemical compound C\C=C\C(=O)OC(C)C AABBHSMFGKYLKE-SNAWJCMRSA-N 0.000 description 1
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 150000004053 quinones Chemical class 0.000 description 1
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- 239000000377 silicon dioxide Substances 0.000 description 1
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- 239000002002 slurry Substances 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
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- 239000010959 steel Substances 0.000 description 1
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- JIYXDFNAPHIAFH-UHFFFAOYSA-N tert-butyl 3-tert-butylperoxycarbonylbenzoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC(C(=O)OC(C)(C)C)=C1 JIYXDFNAPHIAFH-UHFFFAOYSA-N 0.000 description 1
- GJBRNHKUVLOCEB-UHFFFAOYSA-N tert-butyl benzenecarboperoxoate Chemical compound CC(C)(C)OOC(=O)C1=CC=CC=C1 GJBRNHKUVLOCEB-UHFFFAOYSA-N 0.000 description 1
- SWAXTRYEYUTSAP-UHFFFAOYSA-N tert-butyl ethaneperoxoate Chemical compound CC(=O)OOC(C)(C)C SWAXTRYEYUTSAP-UHFFFAOYSA-N 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 238000001029 thermal curing Methods 0.000 description 1
- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical class C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 description 1
- NNENFOSYDBTCBO-UHFFFAOYSA-M tributyl(hexadecyl)phosphanium;chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[P+](CCCC)(CCCC)CCCC NNENFOSYDBTCBO-UHFFFAOYSA-M 0.000 description 1
- QEXITCCVENILJI-UHFFFAOYSA-M tributyl(phenyl)azanium;chloride Chemical compound [Cl-].CCCC[N+](CCCC)(CCCC)C1=CC=CC=C1 QEXITCCVENILJI-UHFFFAOYSA-M 0.000 description 1
- GLSQMJPVEVGXMZ-UHFFFAOYSA-N tributyl-(2,5-dihydroxyphenyl)phosphanium;bromide Chemical compound [Br-].CCCC[P+](CCCC)(CCCC)C1=CC(O)=CC=C1O GLSQMJPVEVGXMZ-UHFFFAOYSA-N 0.000 description 1
- TUQOTMZNTHZOKS-UHFFFAOYSA-N tributylphosphine Chemical compound CCCCP(CCCC)CCCC TUQOTMZNTHZOKS-UHFFFAOYSA-N 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Materials For Photolithography (AREA)
- Epoxy Resins (AREA)
- Non-Metallic Protective Coatings For Printed Circuits (AREA)
- Production Of Multi-Layered Print Wiring Board (AREA)
- Manufacturing Of Printed Wiring (AREA)
Abstract
Description
本発明は、多層プリント配線板等の絶縁層形成に好適な感光性樹脂組成物、感光性エレメント、及びプリント配線板に関する。 The present invention relates to a photosensitive resin composition suitable for forming an insulating layer such as a multilayer printed wiring board, a photosensitive element, and a printed wiring board.
近年、電子機器の小型化、高性能化が進み、多層プリント配線板は、回路層数の増加、配線の微細化による高密度化が進行している。特に半導体チップが搭載されるBGA(ボールグリッドアレイ)、CSP(チップサイズパッケージ)等の半導体パッケージ基板の高密度化は著しく、配線の微細化に加え、絶縁膜の薄膜化、層間接続用のビアの小径化が進行している。このような半導体パッケージ基板では、回路の微細化に伴い、回路をめっきにより形成する、セミアディティブ工法が主流となっている。 In recent years, electronic devices have become smaller and higher in performance, and multilayer printed wiring boards have been increased in density due to an increase in the number of circuit layers and miniaturization of wiring. In particular, the density of semiconductor package substrates such as BGA (ball grid array) and CSP (chip size package) on which semiconductor chips are mounted is extremely high. In addition to miniaturization of wiring, the thickness of insulating films is reduced and vias for interlayer connection are used. The diameter has been reduced. In such a semiconductor package substrate, with the miniaturization of a circuit, a semi-additive method of forming a circuit by plating has become mainstream.
セミアディティブ工法では、例えば、(1)導体回路上に絶縁膜を形成した後、層間接続用のビア加工をレーザー照射、樹脂の残渣除去としてデスミア処理を行う。(2)その後、基板に無電解銅めっき処理を施し、ドライフィルムレジストでパターンを形成した後に、電解銅めっきを行うことにより銅の回路層を形成する。(3)最後にレジスト剥離、無電解層のフラッシュエッチングにより、銅の回路が形成される。 In the semi-additive method, for example, (1) after an insulating film is formed on a conductor circuit, via processing for interlayer connection is performed by laser irradiation and resin residue removal to perform desmear processing. (2) Thereafter, an electroless copper plating process is performed on the substrate, and after forming a pattern with a dry film resist, a copper circuit layer is formed by performing electrolytic copper plating. (3) Finally, a copper circuit is formed by resist stripping and flash etching of the electroless layer.
しかしながら、最近では、高密度化のため、レーザー照射によるビア加工サイズが限界に達しており、フォトリソ法により、より小径のビアを一括で形成するフォトビア法が注目を集めている。 However, recently, the via processing size by laser irradiation has reached the limit for higher density, and the photo via method of forming vias of smaller diameter collectively by the photolithographic method has attracted attention.
一方で、フォトリソ法に対応した感光性樹脂組成物の場合、高信頼性が要求される半導体パッケージ基板に必要とされる特性を満足するには十分ではなかった。 On the other hand, in the case of the photosensitive resin composition corresponding to the photolithographic method, it was not sufficient to satisfy the characteristics required for a semiconductor package substrate requiring high reliability.
本発明は、絶縁材上に形成された導体層との優れた密着性(ピール強度)を有し、かつ優れた絶縁信頼性(HAST耐性)を有する感光性樹脂組成物、感光性エレメント、フォトビア材料を提供することを目的とする。 The present invention relates to a photosensitive resin composition, a photosensitive element, and a photovia having excellent adhesion (peel strength) to a conductor layer formed on an insulating material and having excellent insulation reliability (HAST resistance). The purpose is to provide material.
本発明者らは、鋭意研究の結果、(A1)ビフェニル骨格を有し、かつエチレン性不飽和基を有する光重合性化合物、(B)光重合開始剤、(C)エポキシ樹脂を含有する感光性樹脂組成物が、導体層との優れた密着性(ピール強度)を有し、かつ優れた絶縁信頼性を有することを見出した。 As a result of intensive studies, the present inventors have (A1) a photopolymerizable compound having a biphenyl skeleton and having an ethylenically unsaturated group, (B) a photopolymerization initiator, and (C) a photosensitive resin containing an epoxy resin. It has been found that the conductive resin composition has excellent adhesion (peel strength) to the conductor layer and excellent insulation reliability.
本発明の(A1)ビフェニル骨格を有し、かつエチレン性不飽和基を有する光重合性化合物は、分子内に(メタ)アクリロイル基又はカルボキシル基を有する酸変性エポキシアクリレート化合物を含むことが望ましく、アルカリ現像により、フォトリソにより一括で小径ビアを形成する。 The photopolymerizable compound (A1) having a biphenyl skeleton and having an ethylenically unsaturated group of the present invention preferably contains an acid-modified epoxy acrylate compound having a (meth) acryloyl group or a carboxyl group in the molecule. By alkali development, small-diameter vias are collectively formed by photolithography.
本発明の(A1)ビフェニル骨格を有し、かつエチレン性不飽和基を有する光重合性化合物は、下記一般式(1)で表される化合物であることが好ましい。
[式(1)中、R1〜R3はそれぞれ(メタ)アクリロイル基又はカルボキシル基を有する基を示す。]
The photopolymerizable compound (A1) having a biphenyl skeleton and having an ethylenically unsaturated group of the present invention is preferably a compound represented by the following general formula (1).
[In the formula (1), R1 to R3 each represent a group having a (meth) acryloyl group or a carboxyl group. ]
また、(C)エポキシ樹脂、の1つとして、エポキシ化ポリブタジエンを含有することで、同様に優れた密着性(ピール強度)をさらに発現する。 Further, as one of the (C) epoxy resins, by containing epoxidized polybutadiene, excellent adhesion (peel strength) is further developed.
また、感光性樹脂組成物は(D)多官能マレイミド化合物をさらに含有することが好ましい。 Moreover, it is preferable that the photosensitive resin composition further contains (D) a polyfunctional maleimide compound.
加えて、(F)1時間半減期温度が100℃から180℃である有機過酸化物、を含有することで、キュア後の樹脂のTgが増加し、より絶縁信頼性等が向上するため望ましい。 In addition, (F) containing an organic peroxide having a one-hour half-life temperature of 100 ° C. to 180 ° C. is desirable because the Tg of the cured resin is increased and the insulation reliability is further improved. .
本発明は、支持体と、該支持体上に上記の感光性樹脂組成物を用いて形成される感光層と、を備えてなる感光性エレメントを提供することができる。 The present invention can provide a photosensitive element comprising a support and a photosensitive layer formed on the support using the photosensitive resin composition described above.
また、上記の感光性樹脂組成物は、絶縁材上に導体層を形成する多層プリント配線板の絶縁層用樹脂として使用される。特に、アルカリ過マンガン酸エッチング溶液(デスミア液)で処理した後、銅めっきプロセスにより、レジスト上に配線を形成する多層プリント配線板の絶縁層用樹脂として好適であり、優れた特性を発揮する。さらに、本発明は、上記の感光性樹脂組成物を用いて形成される層間絶縁膜を備えるプリント配線板を提供することができる。 Moreover, said photosensitive resin composition is used as resin for insulating layers of the multilayer printed wiring board which forms a conductor layer on an insulating material. In particular, after being treated with an alkaline permanganate etching solution (desmear solution), it is suitable as a resin for an insulating layer of a multilayer printed wiring board in which wiring is formed on a resist by a copper plating process, and exhibits excellent characteristics. Furthermore, this invention can provide a printed wiring board provided with the interlayer insulation film formed using said photosensitive resin composition.
本発明によれば、絶縁材上に形成された導体層との優れた密着性(ピール強度)を有し、かつ優れた絶縁信頼性を有する感光性樹脂組成物、感光性エレメント、フォトビア材料を提供することができる。 According to the present invention, a photosensitive resin composition, a photosensitive element, and a photovia material having excellent adhesion (peel strength) to a conductor layer formed on an insulating material and having excellent insulation reliability. Can be provided.
特に、アルカリ過マンガン酸エッチング溶液(デスミア液)で処理した後、銅めっきプロセスにより、レジスト上に配線を形成する多層プリント配線板の層間絶縁材用樹脂、として用いた場合に好適である。 In particular, it is suitable for use as a resin for an interlayer insulating material of a multilayer printed wiring board in which wiring is formed on a resist by a copper plating process after treatment with an alkaline permanganate etching solution (desmear solution).
以下、本発明の好適な実施形態について詳細に説明する。 Hereinafter, preferred embodiments of the present invention will be described in detail.
本発明の感光性樹脂組成物は、(A1)ビフェニル骨格を有し、かつエチレン性不飽和基を有する光重合性化合物、(B)光重合開始剤、(C)エポキシ樹脂、を含有する。また、必要に応じて、(D)多官能マレイミド化合物、(G)無機フィラー、等を含有することができる。以下、成分について説明する。 The photosensitive resin composition of the present invention contains (A1) a photopolymerizable compound having a biphenyl skeleton and having an ethylenically unsaturated group, (B) a photopolymerization initiator, and (C) an epoxy resin. Moreover, (D) polyfunctional maleimide compound, (G) inorganic filler, etc. can be contained as needed. Hereinafter, the components will be described.
<(A1)ビフェニル骨格を有し、かつエチレン性不飽和基を有する光重合性化合物>
本発明のエチレン性不飽和基かつビフェニル骨格を有する光重合性化合物は、分子内にエチレン性不飽和基かつビフェニル骨格を有する化合物を指し、感光性基として、(メタ)アクリロイル基を有していれば特に制限は無い。好ましくは、エチレン性不飽和基かつビフェニル骨格を有することに加え、分子内にカルボキシル基を有する酸変性エポキシアクリレート化合物を用いる。これによりアルカリ現像性を付与することができる。なお、分子内にカルボキシル基を有する化合物を用いない場合には、溶剤等により現像して、感光性のパターンを得ることができる。
<(A1) Photopolymerizable compound having a biphenyl skeleton and having an ethylenically unsaturated group>
The photopolymerizable compound having an ethylenically unsaturated group and a biphenyl skeleton of the present invention refers to a compound having an ethylenically unsaturated group and a biphenyl skeleton in the molecule, and has a (meth) acryloyl group as a photosensitive group. If there is no particular limitation. Preferably, an acid-modified epoxy acrylate compound having a carboxyl group in the molecule in addition to having an ethylenically unsaturated group and a biphenyl skeleton is used. Thereby, alkali developability can be provided. In addition, when not using the compound which has a carboxyl group in a molecule | numerator, it can develop with a solvent etc. and a photosensitive pattern can be obtained.
酸変性エポキシアクリレート化合物は、例えば、(a1)エポキシ樹脂と(a2)不飽和基含有モノカルボン酸との反応生成物(A’)に(a3)飽和又は不飽和基含有多塩基酸無水物を反応させて得ることができる。上記(a1)エポキシ樹脂としては、ベフェニル骨格を有していれば特に制限が無く、例えば、ノボラック型エポキシ樹脂、ビスフェノールA型エポキシ樹脂、ビスフェノールF型エポキシ樹脂、ビスフェノールS型エポキシ樹脂、サリチルアルデヒド型エポキシ樹脂、ビスフェノールAノボラック型エポキシ樹脂、ビスフェノールFノボラック型エポキシ樹脂、ビフェニルノボラック型エポキシ樹脂、ゴム変性エポキシ樹脂等が挙げられる。具体的にはビフェニル骨格含有エポキシ樹脂(日本化薬社製「NC−3500」)が挙げられ、その構造を下記一般式(1)に示す。式(1)において、R1〜R3は(メタ)アクリロイル基またはカルボキシル基を有することが好ましい。また、上記反応生成物(A’)とイソシアネートを反応させて得られるエポキシ樹脂ベースのポリウレタン樹脂を使用しても良い。これらは単独で、又は2種以上を組み合わせて使用される。
上述したビフェニル骨格含有酸変性エポキシアクリレート化合物としては、ZCR−8000(日本化薬社製)が商業的に入手可能である。 ZCR-8000 (manufactured by Nippon Kayaku Co., Ltd.) is commercially available as the above-mentioned biphenyl skeleton-containing acid-modified epoxy acrylate compound.
また、ビフェニル骨格を有しない酸変性エポキシアクリレート化合物としては、例えば、CCR−1218H、CCR−1159H、CCR−1222H、PCR−1050、TCR−1335H、ZAR−1035、ZAR−2001H、UXE−3024、ZFR−1185及びZCR−1569H、ZCR−6000、ZCR−8000(以上、日本化薬社製、商品名)、UE−9000、UE−EXP−2810PM、UE−EXP−3045(以上、DIC社製、商品名)等が商業的に入手可能であり、これらを2種以上組み合わせて使用してもよい。 Examples of acid-modified epoxy acrylate compounds having no biphenyl skeleton include CCR-1218H, CCR-1159H, CCR-1222H, PCR-1050, TCR-1335H, ZAR-1035, ZAR-2001H, UXE-3024, and ZFR. -1185 and ZCR-1569H, ZCR-6000, ZCR-8000 (above, Nippon Kayaku Co., Ltd., trade name), UE-9000, UE-EXP-2810PM, UE-EXP-3045 (above, DIC Corporation, product) Name) etc. are commercially available, and two or more of these may be used in combination.
カルボキシル基を有さない光重合性化合物としては、例えば、ジペンタエリスリトールヘキサアクリレートとその類似構造体のものがあり、商業的には、KAYARAD DPHA、KAYARAD D−310、KAYARAD D−330、KAYARAD DPCA−20、30、KAYARAD DPCA−60、120(いずれも日本化薬社製、商品名)として入手可能である。エチレン性不飽和基を1分子内に3つ以上有する多官能光重合化合物としては、トリメチロールプロパントリエトキシトリアクリレート(SR−454、日本化薬社製、商品名)等が商業的に入手可能である。 Examples of the photopolymerizable compound having no carboxyl group include dipentaerythritol hexaacrylate and its similar structure, and commercially available are KAYARAD DPHA, KAYARAD D-310, KAYARAD D-330, and KAYARAD DPCA. -20, 30, KAYARAD DPCA-60, 120 (all are trade names, manufactured by Nippon Kayaku Co., Ltd.). As a polyfunctional photopolymerization compound having three or more ethylenically unsaturated groups in one molecule, trimethylolpropane triethoxytriacrylate (SR-454, Nippon Kayaku Co., Ltd., trade name) is commercially available. It is.
また、ビスフェノールA構造を有した光重合性化合物としては、例えば、2,2−ビス(4−(メタクリロキシペンタエトキシ)フェニル)プロパンであるFA−321M(日立化成社製、商品名)又はBPE−500(新中村化学工業社製、商品名)として商業的に入手可能であり、2,2−ビス(4−(メタクリロキシペンタデカエトキシ)フェニル)は、BPE−1300(新中村化学工業社製、商品名)として商業的に入手可能である。 Examples of the photopolymerizable compound having a bisphenol A structure include FA-321M (trade name, manufactured by Hitachi Chemical Co., Ltd.) or BPE, which is 2,2-bis (4- (methacryloxypentaethoxy) phenyl) propane. -500 (manufactured by Shin-Nakamura Chemical Co., Ltd., trade name) and 2,2-bis (4- (methacryloxypentadecaethoxy) phenyl) is BPE-1300 (Shin-Nakamura Chemical Co., Ltd.) (Commercially available as product name).
光重合性化合物は、単独で又は2種類以上を組み合わせて使用されるが、特にエチレン性不飽和基を1分子内に3つ以上有する多官能光重合モノマーを少なくとも1種類以上含有することが望ましい。中でもエチレン性不飽和基を1分子内に6つ以上有する多官能光重合モノマーがリフロー実装時のクラック耐性の向上に有効である。 The photopolymerizable compound is used singly or in combination of two or more, and it is desirable to contain at least one polyfunctional photopolymerizable monomer having at least three ethylenically unsaturated groups in one molecule. . Among them, a polyfunctional photopolymerizable monomer having 6 or more ethylenically unsaturated groups in one molecule is effective for improving crack resistance during reflow mounting.
<(B)光重合開始剤>
本発明の(c)光重合開始剤としては、例えば、ベンゾフェノン、N,N’−テトラアルキル−4,4’−ジアミノベンゾフェノン、2−ベンジル−2−ジメチルアミノ−1−(4−モルホリノフェニル)−ブタノン−1、2−メチル−1−[4−(メチルチオ)フェニル]−2−モルホリノ−プロパノン−1、4,4’−ビス(ジメチルアミノ)ベンゾフェノン(ミヒラーケトン)、4,4’−ビス(ジエチルアミノ)ベンゾフェノン、4−メトキシ−4’−ジメチルアミノベンゾフェノン等の芳香族ケトン類、アルキルアントラキノン、フェナントレンキノン等のキノン類、ベンゾイン、アルキルベンゾイン等のベンゾイン化合物、ベンゾインアルキルエーテル、ベンゾインフェニルエーテル等のベンゾインエーテル化合物、ベンジルジメチルケタール等のベンジル誘導体、2−(o−クロロフェニル)−4,5−ジフェニルイミダゾール二量体、2−(o−クロロフェニル)−4,5−ジ(m−メトキシフェニル)イミダゾール二量体、2−(o−フルオロフェニル)−4,5−ジフェニルイミダゾール二量体、2−(o−メトキシフェニル)−4,5−ジフェニルイミダゾール二量体、2,4−ジ(p−メトキシフェニル)−5−フェニルイミダゾール二量体、2−(2,4−ジメトキシフェニル)−4,5−ジフェニルイミダゾール二量体等の2,4,5−トリアリールイミダゾール二量体、N−フェニルグリシン、N−フェニルグリシン誘導体、9−フェニルアクリジン等のアクリジン誘導体、1,2−オクタンジオン,1−[4−(フェニルチオ)−,2−(O−ベンゾイルオキシム)]等のオキシムエステル類、7−ジエチルアミノ−4−メチルクマリン等のクマリン系化合物、2,4−ジエチルチオキサントン等のチオキサントン系化合物、2,4,6−トリメチルベンゾイル−ジフェニル−ホスフィンオキサイド等のアシルホスフィンオキサイド系化合物などを組み合わせて用いることができる。
<(B) Photopolymerization initiator>
Examples of the photopolymerization initiator (c) of the present invention include benzophenone, N, N′-tetraalkyl-4,4′-diaminobenzophenone, 2-benzyl-2-dimethylamino-1- (4-morpholinophenyl). -Butanone-1,2-methyl-1- [4- (methylthio) phenyl] -2-morpholino-propanone-1,4,4'-bis (dimethylamino) benzophenone (Michler's ketone), 4,4'-bis ( Aromatic ketones such as diethylamino) benzophenone and 4-methoxy-4'-dimethylaminobenzophenone, quinones such as alkylanthraquinone and phenanthrenequinone, benzoin compounds such as benzoin and alkylbenzoin, benzoin such as benzoin alkyl ether and benzoin phenyl ether Ether compound, benzyldimethyl Benzyl derivatives such as tar, 2- (o-chlorophenyl) -4,5-diphenylimidazole dimer, 2- (o-chlorophenyl) -4,5-di (m-methoxyphenyl) imidazole dimer, 2- (O-fluorophenyl) -4,5-diphenylimidazole dimer, 2- (o-methoxyphenyl) -4,5-diphenylimidazole dimer, 2,4-di (p-methoxyphenyl) -5 2,4,5-triarylimidazole dimers such as phenylimidazole dimer, 2- (2,4-dimethoxyphenyl) -4,5-diphenylimidazole dimer, N-phenylglycine, N-phenylglycine Derivatives, acridine derivatives such as 9-phenylacridine, 1,2-octanedione, 1- [4- (phenylthio)-, 2- (O-benzoyl) Oxime)], coumarin compounds such as 7-diethylamino-4-methylcoumarin, thioxanthone compounds such as 2,4-diethylthioxanthone, 2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide, etc. A combination of acylphosphine oxide compounds can be used.
商業的には、BASF社製のIRGACUREシリーズ等があり、例えば、IRGACURE 369、IRGACURE 907、IRGACURE TPO、IRGACURE 819、IRGACURE OXE01、IRGACURE OXE02(いずれもBASF社製、商品名)として商業的に入手可能である。これらは単独で、又は2種以上を組み合わせて使用される。 Commercially, there is an IRGACURE series manufactured by BASF, for example, IRGACURE 369, IRGACURE 907, IRGACURE TPO, IRGACURE 819, IRGACURE OXE01, IRGACURE OXE02 (all of which are manufactured by BASF, trade names) It is. These are used alone or in combination of two or more.
光重合開始剤の含有量は、(G)無機フィラーと溶剤成分を除く、樹脂成分の総量100質量に対して、好ましくは0.01〜20質量部であり、より好ましくは0.1〜10質量部であり、特に好ましくは0.2〜6質量部である。(B)光重合開始剤の含有量がこの範囲内であると、感光性樹脂組成物の光感度及び内部の光硬化性に優れ、その結果、解像性、ビア形状がより良好となる。 The content of the photopolymerization initiator is preferably 0.01 to 20 parts by mass, and more preferably 0.1 to 10 parts by mass with respect to 100 g of the total amount of the resin components excluding (G) the inorganic filler and the solvent component. It is a mass part, Most preferably, it is 0.2-6 mass part. (B) When content of a photoinitiator is in this range, it is excellent in the photosensitivity and internal photocurability of the photosensitive resin composition, As a result, resolution and via | veer shape become more favorable.
<(C)エポキシ樹脂>
本発明の(C)エポキシ樹脂としては、特に限定されないが、ビスフェノールA型エポキシ樹脂、ビスフェノールF型エポキシ樹脂、ビスフェノールS型エポキシ樹脂、フェノールノボラック型エポキシ樹脂、クレゾールノボラック型エポキシ樹脂、ナフトール型エポキシ樹脂、ナフタレン型エポキシ樹脂、ナフチレンエーテル型エポキシ樹脂、グリシジルアミン型エポキシ樹脂、ビフェニル型エポキシ樹脂、脂環式エポキシ樹脂、複素環式エポキシ樹脂、スピロ環含有エポキシ樹脂、シクロヘキサンジメタノール型エポキシ樹脂、トリメチロール型エポキシ樹脂等が挙げられる。これらは1種又は2種以上組み合わせて使用してもよい。
<(C) Epoxy resin>
The (C) epoxy resin of the present invention is not particularly limited, but is bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol S type epoxy resin, phenol novolac type epoxy resin, cresol novolac type epoxy resin, naphthol type epoxy resin. , Naphthalene type epoxy resin, naphthylene ether type epoxy resin, glycidyl amine type epoxy resin, biphenyl type epoxy resin, alicyclic epoxy resin, heterocyclic epoxy resin, spiro ring-containing epoxy resin, cyclohexanedimethanol type epoxy resin, tri Examples include methylol type epoxy resins. These may be used alone or in combination of two or more.
これらの中でも、特に、耐熱性向上、絶縁信頼性向上、銅との密着性向上の観点から、ビスフェノールA型エポキシ樹脂、ナフトール型エポキシ樹脂、ナフタレン型エポキシ樹脂、ビフェニル型エポキシ樹脂、ナフチレンエーテル型エポキシ樹脂が好ましい。具体的には、例えば、ビスフェノールA型エポキシ樹脂(三菱化学(株)製「エピコート828EL」、「YL980」)、ビスフェノールF型エポキシ樹脂(三菱化学(株)製「jER806H」、「YL983U」)、ナフタレン型エポキシ樹脂(DIC(株)製「HP4032D」、「HP4710」)、ナフタレン骨格含有多官能エポキシ樹脂(日本化薬(株)製「NC7000」)、ナフトール型エポキシ樹脂(新日鐵化学(株)製「ESN−475V」)、ビフェニル構造を有するエポキシ樹脂(日本化薬(株)製「NC3000H」、「NC3500」)、三菱化学(株)製「YX4000HK」、「YL6121」)、アントラセン型エポキシ樹脂(三菱化学(株)製「YX8800」)、グリセロール型エポキシ樹脂(新日鐵化学(株)製「ZX1542」)、ナフチレンエーテル型エポキシ樹脂(DIC(株)製「EXA7311−G3」)等が挙げられる。 Among these, bisphenol A type epoxy resin, naphthol type epoxy resin, naphthalene type epoxy resin, biphenyl type epoxy resin, naphthylene ether type, in particular, from the viewpoint of improving heat resistance, improving insulation reliability, and improving adhesion to copper Epoxy resins are preferred. Specifically, for example, bisphenol A type epoxy resin (“Epicoat 828EL”, “YL980” manufactured by Mitsubishi Chemical Corporation), bisphenol F type epoxy resin (“jER806H”, “YL983U” manufactured by Mitsubishi Chemical Corporation), Naphthalene type epoxy resin (DIC Corporation "HP4032D", "HP4710"), naphthalene skeleton-containing polyfunctional epoxy resin (Nippon Kayaku Co., Ltd. "NC7000"), naphthol type epoxy resin (Nippon Chemical Co., Ltd.) ) “ESN-475V”), epoxy resins having a biphenyl structure (“NC3000H”, “NC3500” manufactured by Nippon Kayaku Co., Ltd.), “YX4000HK”, “YL6121” manufactured by Mitsubishi Chemical Corporation), anthracene type epoxy Resin ("YX8800" manufactured by Mitsubishi Chemical Corporation), glycerol type epoxy resin (new Steel Chemical Co., Ltd. "ZX1542"), such as naphthylene ether type epoxy resin (DIC Corp. "EXA7311-G3") can be mentioned.
エポキシ樹脂は2種以上を併用しても良い。また、室温で液状のエポキシ樹脂、及び室温で固体状の芳香族系エポキシ樹脂を併用することが好ましい。 Two or more epoxy resins may be used in combination. Moreover, it is preferable to use together an epoxy resin that is liquid at room temperature and an aromatic epoxy resin that is solid at room temperature.
さらに、本発明の感光性樹脂組成物は、エポキシ樹脂として、ブタジエン構造を有するエポキシ樹脂(ダイセル化学工業(株)製「PB−3600」、「エポリードPB」)を他のエポキシ樹脂と併用して用いることが望ましい。 Furthermore, the photosensitive resin composition of the present invention uses, as an epoxy resin, an epoxy resin having a butadiene structure (“PB-3600”, “Epolide PB” manufactured by Daicel Chemical Industries, Ltd.) in combination with another epoxy resin. It is desirable to use it.
(C)エポキシ樹脂の含有量は、(G)無機フィラーと溶剤成分を除く、樹脂成分の総量100質量に対して、好ましくは5〜70質量部であり、より好ましくは10〜50質量部であり、特に好ましくは15〜40質量部である。(C)エポキシ樹脂の含有量が5質量部より少ない場合には、感光性樹脂組成物の十分な架橋が得られず銅との密着性、絶縁信頼性が得られない。一方、70質量部を超える場合には、解像性や現像性が不十分となる。 (C) The content of the epoxy resin is preferably 5 to 70 parts by mass, more preferably 10 to 50 parts by mass with respect to 100 g of the total amount of the resin components excluding the inorganic filler and the solvent component (G). Yes, particularly preferably 15 to 40 parts by mass. (C) When content of an epoxy resin is less than 5 mass parts, sufficient bridge | crosslinking of the photosensitive resin composition cannot be obtained, and adhesiveness with copper and insulation reliability are not obtained. On the other hand, if it exceeds 70 parts by mass, the resolution and developability will be insufficient.
<(D)多官能マレイミド化合物>
本発明に使用する多官能マレイミド化合物としては、特に限定されないが、1−メチル−2,4−ビスマレイミドベンゼン、N,N’−m−フェニレンビスマレイミド、N,N’−p−フェニレンビスマレイミド、N,N’−m−トルイレンビスマレイミド、N,N’−4,4’−ビフェニレンビスマレイミド、N,N’−4,4’−〔3,3’−ジメチルビフェニレン〕ビスマレイミド、N,N’−4,4’−〔3,3’−ジメチルジフェニルメタン〕ビスマレイミド、N,N’−4,4’−〔3,3’−ジエチルジフェニルメタン〕ビスマレイミド、N,N’−4,4’−ジフェニルメタンビスマレイミド、N,N’−4,4’−ジフェニルプロパンビスマレイミド、N,N’−4,4’−ジフェニルエーテルビスマレイミド、2,2−ビス〔4−(4−マレイミドフェノキシ)フェニル〕プロパン、1,1−ビス〔2−メチル−4−(4−マレイミドフェノキシ)−5−t−ブチルフェニル〕−2−メチルプロパン、4,4’−メチレン−ビス〔1−(4−マレイミドフェノキシ)−2,6−ビス(1,1−ジメチルエチル)ベンゼン〕、4,4’−(1−メチルエチリデン)−ビス〔1−(マレイミドフェノキシ)−2,6−ビス(1,1−ジメチルエチル)ベンゼン〕、2,2−ビス〔4−(4−マレイミドフェノキシ)フェニル〕プロパン、2,2−ビス〔3−メチル−4−(4−マレイミドフェノキシ)フェニル〕プロパン、2,2−ビス〔3,5−ジメチル−4−(4−マレイミドフェノキシ)フェニル〕プロパン、2,2−ビス〔3−エチル−4−(4−マレイミドフェノキシ)フェニル〕プロパン、ビス〔3−メチル−4−(4−マレイミドフェノキシ)フェニル〕メタン、ビス〔3,5−ジメチル−4−(4−マレイミドフェノキシ)フェニル〕メタン、ビス〔3−エチル−4−(4−マレイミドフェノキシ)フェニル〕メタン、フェニルメタンマレイミド等が挙げられる。これらは1種を単独で、又は2種以上を組み合わせて使用することができる。
<(D) polyfunctional maleimide compound>
Although it does not specifically limit as a polyfunctional maleimide compound used for this invention, 1-methyl-2, 4-bismaleimide benzene, N, N'-m-phenylene bismaleimide, N, N'-p-phenylene bismaleimide N, N′-m-toluylene bismaleimide, N, N′-4,4′-biphenylene bismaleimide, N, N′-4,4 ′-[3,3′-dimethylbiphenylene] bismaleimide, N , N′-4,4 ′-[3,3′-dimethyldiphenylmethane] bismaleimide, N, N′-4,4 ′-[3,3′-diethyldiphenylmethane] bismaleimide, N, N′-4, 4′-diphenylmethane bismaleimide, N, N′-4,4′-diphenylpropane bismaleimide, N, N′-4,4′-diphenyl ether bismaleimide, 2,2-bis [4- (4-maleimide) Enoxy) phenyl] propane, 1,1-bis [2-methyl-4- (4-maleimidophenoxy) -5-t-butylphenyl] -2-methylpropane, 4,4′-methylene-bis [1- ( 4-maleimidophenoxy) -2,6-bis (1,1-dimethylethyl) benzene], 4,4 ′-(1-methylethylidene) -bis [1- (maleimidophenoxy) -2,6-bis (1 , 1-dimethylethyl) benzene], 2,2-bis [4- (4-maleimidophenoxy) phenyl] propane, 2,2-bis [3-methyl-4- (4-maleimidophenoxy) phenyl] propane, 2, , 2-bis [3,5-dimethyl-4- (4-maleimidophenoxy) phenyl] propane, 2,2-bis [3-ethyl-4- (4-maleimidophenoxy) phenyl] pro Bis [3-methyl-4- (4-maleimidophenoxy) phenyl] methane, bis [3,5-dimethyl-4- (4-maleimidophenoxy) phenyl] methane, bis [3-ethyl-4- (4 -Maleimidophenoxy) phenyl] methane, phenylmethanemaleimide and the like. These can be used alone or in combination of two or more.
商業的には、例えば、大和化成工業製のBMIシリーズとして入手可能であり、BMI−1000、BMI−2000、BMI−2300、BMI−3000、BMI−4000、BMI−5000、BMI−5100、BMI−7000、BMI−TMH(大和化成工業(株)製、製品名)等が入手可能である。これらの中では、溶剤への溶解性の観点から、BMI−5100、BMI−4000、BMI−2300を使用するのが望ましい。 Commercially available, for example, as a BMI series manufactured by Daiwa Kasei Kogyo, BMI-1000, BMI-2000, BMI-2300, BMI-3000, BMI-4000, BMI-5000, BMI-5100, BMI- 7000, BMI-TMH (manufactured by Daiwa Kasei Kogyo Co., Ltd., product name) and the like are available. Among these, it is desirable to use BMI-5100, BMI-4000, and BMI-2300 from the viewpoint of solubility in a solvent.
(D)多官能マレイミド化合物の含有量は、(G)無機フィラーと溶剤成分を除く、樹脂成分の総量100質量に対して、好ましくは2〜40質量部であり、より好ましくは5〜30質量部であり、特に好ましくは10〜25質量部である。(D)多官能マレイミド化合物の含有量が2質量部より少ない場合には、絶縁信頼性が低下する傾向がある。一方、40質量部を超える場合には、解像性や現像性が不十分となる。 (D) The content of the polyfunctional maleimide compound is preferably 2 to 40 parts by mass, more preferably 5 to 30 parts by mass, with respect to 100 g of the total amount of the resin components excluding the inorganic filler and the solvent component (G). Part, particularly preferably 10 to 25 parts by weight. (D) When the content of the polyfunctional maleimide compound is less than 2 parts by mass, the insulation reliability tends to decrease. On the other hand, when it exceeds 40 parts by mass, resolution and developability are insufficient.
<(F)有機過酸化物>
有機過酸化物は、熱によりラジカルを発生する熱ラジカル開始剤として機能するものであり、本発明では、その1時間半減期温度が100〜180℃のものを用いる。このような1時間半減期温度を有する有機過酸化物を使用することで、感光性樹脂組成物の架橋密度向上と保存安定性、及び広いラミネート温度裕度を可能とする。具体的には、ジクミルパーオキサイド(日本油脂社製、商品名「パークミルD」)、α,α’−ビス(t−ブチルパーオキシ−m−イソプロピル)ベンゼン(日本油脂社製、商品名「パーブチルP」)、2,5−ジメチル−2,5−ジ(t−ブチルパーオキシ)ヘキサン−3(日本油脂社製、商品名「パーヘキシン25b」)、t−ブチルパーオキシベンゾエート(日本油脂社製、商品名「パーブチルZ」)、t−ブチルクミルパーオキサイド(日本油脂社製、商品名「パーブチルC」)、シクロヘキサンパーオキサイド、1,1−ビス(t−ブチルパーオキシ)シクロヘキサン、1,1−ビス(t−ブチルパーオキシ)3,3,5−トリメチルシクロヘキサン、2,2−ビス(t−ブチルパーオキシ)オクタン、n−ブチル−4,4−ビス(t−ブチルパーオキシ)バレレート、ジ−t−ブチルパーオキサイド、ベンゾイルパーオキサイド、クミルパーオキシネオデカネート、2,5−ジメチル−2,5−ジ(ベンゾイルパーオシ)ヘキサン、t−ブチルパーオキシイソプロピルカーボネート、t−ブチルパーオキシアリルカーボネート、t−ブチルパーオキシアセテート、2,2−ビス(t−ブチルパーオキシ)ブタン、ジ−t−ブチルパーオキシイソフタレート及びt−ブチルパーオキシマレイン酸を用いることができる。これらは単独で又は2種類以上を組み合わせて使用することができる。
<(F) Organic peroxide>
The organic peroxide functions as a thermal radical initiator that generates radicals by heat. In the present invention, one having a one-hour half-life temperature of 100 to 180 ° C. is used. By using an organic peroxide having such a one-hour half-life temperature, it is possible to improve the crosslinking density and storage stability of the photosensitive resin composition and to have a wide laminating temperature tolerance. Specifically, dicumyl peroxide (Nippon Yushi Co., Ltd., trade name “Park Mill D”), α, α′-bis (t-butylperoxy-m-isopropyl) benzene (Nippon Yushi Co., Ltd., trade name “ Perbutyl P "), 2,5-dimethyl-2,5-di (t-butylperoxy) hexane-3 (manufactured by NOF Corporation, trade name" PERHEXIN 25b "), t-butyl peroxybenzoate (NOF Corporation) Product name “Perbutyl Z”), t-butylcumyl peroxide (manufactured by NOF Corporation, product name “Perbutyl C”), cyclohexane peroxide, 1,1-bis (t-butylperoxy) cyclohexane, 1, 1-bis (t-butylperoxy) 3,3,5-trimethylcyclohexane, 2,2-bis (t-butylperoxy) octane, n-butyl-4,4-bis ( -Butylperoxy) valerate, di-t-butyl peroxide, benzoyl peroxide, cumylperoxyneodecanate, 2,5-dimethyl-2,5-di (benzoylperoxy) hexane, t-butylperoxyisopropyl Carbonate, t-butyl peroxyallyl carbonate, t-butyl peroxyacetate, 2,2-bis (t-butylperoxy) butane, di-t-butylperoxyisophthalate and t-butylperoxymaleic acid are used. be able to. These can be used alone or in combination of two or more.
(F)有機過酸化物の含有量は、(G)無機フィラーと溶剤成分を除く、樹脂成分の総量100質量に対して、好ましくは0.01〜5質量部であり、より好ましくは0.1〜3質量部である。(F)有機過酸化物の含有量が0.01質量部未満であると短時間で硬化が完了しにくくなり硬化物が不均一となる傾向がある。一方、含有量が5質量部を超えると乾燥温度やラミネート温度の裕度が低下する。また、分解せずに残留した有機過酸化物により、硬化後の絶縁膜の絶縁信頼性、及びクラック耐性が低下する傾向がある。 The content of (F) organic peroxide is preferably 0.01 to 5 parts by mass, more preferably 0. 0 to 5 parts by mass with respect to 100 mass of the resin component excluding (G) inorganic filler and solvent component. 1 to 3 parts by mass. (F) If the content of the organic peroxide is less than 0.01 parts by mass, curing is difficult to complete in a short time and the cured product tends to be non-uniform. On the other hand, when the content exceeds 5 parts by mass, the tolerance of the drying temperature and the lamination temperature is lowered. Further, the organic peroxide remaining without being decomposed tends to lower the insulation reliability and crack resistance of the insulating film after curing.
<(G)無機フィラー>
本発明の感光性樹脂組成物は、さらに、密着性、塗膜硬度等の諸特性を向上させる目的で、(G)無機フィラーを含有すうことが望ましい。例えば、シリカ(SiO2)、アルミナ(Al2O3)、チタニア(TiO2)、酸化タンタル(Ta2O5)、ジルコニア(ZrO2)、窒化ケイ素(Si3N4)、チタン酸バリウム(BaO・TiO2)、炭酸バリウム(BaCO3)、炭酸マグネシウム、酸化アルミニウム、水酸化アルミニウム、水酸化マグネシウム、チタン酸鉛(PbO・TiO2)、チタン酸ジルコン酸鉛(PZT)、チタン酸ジルコン酸ランタン鉛(PLZT)、酸化ガリウム(Ga2O3)、スピネル(MgO・Al2O3)、ムライト(3Al2O3・2SiO2)、コーディエライト(2MgO・2Al2O3/5SiO2)、タルク(3MgO・4SiO2・H2O)、チタン酸アルミニウム(TiO2−Al2O3)、イットリア含有ジルコニア(Y2O3−ZrO2)、ケイ酸バリウム(BaO・8SiO2)、窒化ホウ素(BN)、炭酸カルシウム(CaCO3)、硫酸バリウム(BaSO4)、硫酸カルシウム(CaSO4)、酸化亜鉛(ZnO)、チタン酸マグネシウム(MgO・TiO2)、ハイドロタルサイト、雲母、焼成カオリン、カーボン(C)等を使用することができる。これらの無機フィラーは、1種を単独で又は2種以上を組み合わせて使用することができる。
<(G) Inorganic filler>
The photosensitive resin composition of the present invention preferably further contains (G) an inorganic filler for the purpose of improving various properties such as adhesion and coating film hardness. For example, silica (SiO 2 ), alumina (Al 2 O 3 ), titania (TiO 2 ), tantalum oxide (Ta 2 O 5 ), zirconia (ZrO 2 ), silicon nitride (Si 3 N 4 ), barium titanate ( BaO · TiO 2 ), barium carbonate (BaCO 3 ), magnesium carbonate, aluminum oxide, aluminum hydroxide, magnesium hydroxide, lead titanate (PbO · TiO 2 ), lead zirconate titanate (PZT), zirconate titanate lead lanthanum (PLZT), gallium oxide (Ga 2 O 3), spinel (MgO · Al 2 O 3) , mullite (3Al 2 O 3 · 2SiO 2 ), cordierite (2MgO · 2Al 2 O 3 / 5SiO 2) , talc (3MgO · 4SiO 2 · H 2 O), aluminum titanate (TiO 2 -Al 2 3), yttria-containing zirconia (Y 2 O 3 -ZrO 2) , barium silicate (BaO · 8SiO 2), boron nitride (BN), calcium carbonate (CaCO 3), barium sulfate (BaSO 4), calcium sulfate (CaSO 4 ), zinc oxide (ZnO), magnesium titanate (MgO.TiO 2 ), hydrotalcite, mica, calcined kaolin, carbon (C) and the like can be used. These inorganic fillers can be used alone or in combination of two or more.
無機フィラー(G)の含有量は、感光性樹脂組成物の固形分全量を基準として0〜80質量%であることが好ましく、10〜70質量%であることがより好ましく、20〜60質量%であることが特に好ましく、30〜50質量%であることが最も好ましい。含有量が上記範囲内である場合には、膜強度、耐熱性、絶縁信頼性、耐熱衝撃性、解像性等をより向上させることができる。また、無機フィラーは、その最大粒子径が0.01〜20μmであると好ましく、0.05〜10μmであるとより好ましく、0.1〜5μmであると特に好ましく、0.1〜1μmであると最も好ましい。最大粒子径が20μmを超えると、絶縁信頼性が損なわれる傾向にある。 The content of the inorganic filler (G) is preferably 0 to 80% by mass, more preferably 10 to 70% by mass based on the total solid content of the photosensitive resin composition, and 20 to 60% by mass. It is particularly preferable that the content is 30 to 50% by mass. When the content is within the above range, film strength, heat resistance, insulation reliability, thermal shock resistance, resolution, and the like can be further improved. The inorganic filler preferably has a maximum particle size of 0.01 to 20 μm, more preferably 0.05 to 10 μm, particularly preferably 0.1 to 5 μm, and 0.1 to 1 μm. And most preferred. When the maximum particle diameter exceeds 20 μm, the insulation reliability tends to be impaired.
無機フィラー(G)の中でも、絶縁信頼性を向上できる観点から、シリカ微粒子を使用することが好ましい。 Among the inorganic fillers (G), it is preferable to use silica fine particles from the viewpoint of improving the insulation reliability.
本発明で用いられる感光性樹脂組成物は、希釈剤として各種の有機溶剤が使用できる。有機溶剤としては、例えば、エチルメチルケトン、シクロヘキサノン等のケトン類、トルエン、キシレン、テトラメチルベンゼン等の芳香族炭化水素類、メチルセロソルブ、ブチルセロソルブ、メチルカルビトール、ブチルカルビトール、プロピレングリコールモノメチルエーテル、ジプロピレングリコールモノエチルエーテル、ジプロピレングリコールジエチルエーテル、トリエチレングリコールモノエチルエーテル等のグリコールエーテル類、酢酸エチル、酢酸ブチル、ブチルセロソルブアセテート、カルビトールアセテート等のエステル類、オクタン、デカンなどの脂肪族炭化水素類、石油エーテル、石油ナフサ、水添石油ナフサ、ソルベントナフサ等の石油系溶剤が挙げられる。 In the photosensitive resin composition used in the present invention, various organic solvents can be used as a diluent. Examples of the organic solvent include ketones such as ethyl methyl ketone and cyclohexanone, aromatic hydrocarbons such as toluene, xylene, and tetramethylbenzene, methyl cellosolve, butyl cellosolve, methyl carbitol, butyl carbitol, propylene glycol monomethyl ether, Glycol ethers such as dipropylene glycol monoethyl ether, dipropylene glycol diethyl ether and triethylene glycol monoethyl ether, esters such as ethyl acetate, butyl acetate, butyl cellosolve acetate and carbitol acetate, aliphatic carbonization such as octane and decane Examples thereof include petroleum solvents such as hydrogen, petroleum ether, petroleum naphtha, hydrogenated petroleum naphtha, and solvent naphtha.
本発明の感光性樹脂組成物には、最終硬化膜の耐熱性、密着性、耐薬品性等の諸特性を更に向上させる目的でエポキシ樹脂硬化剤を併用することができる。 An epoxy resin curing agent can be used in combination with the photosensitive resin composition of the present invention for the purpose of further improving various properties such as heat resistance, adhesion, and chemical resistance of the final cured film.
このようなエポキシ樹脂硬化剤の具体例としては、2−メチルイミダゾール、2−エチル−4−メチルイミダゾール、1−ベンジル−2−メチルイミダゾール、2−フェニルイミダゾール、2−フェニル−4−メチル−5−ヒドロキシメチルイミダゾール等のイミダゾール誘導体:アセトグアナミン、ベンゾグアナミン等のグアナミン類:ジアミノジフェニルメタン、m−フェニレンジアミン、m−キシレンジアミン、ジアミノジフェニルスルフォン、ジシアンジアミド、尿素、尿素誘導体、メラミン、多塩基ヒドラジド等のポリアミン類:これらの有機酸塩及び/又はエポキシアダクト:三フッ化ホウ素のアミン錯体:エチルジアミノ−S−トリアジン、2,4−ジアミノ−S−トリアジン、2,4−ジアミノ−6−キシリル−S−トリアジン等のトリアジン誘導体類:トリメチルアミン、N,N−ジメチルオクチルアミン、N−ベンジルジメチルアミン、ピリジン、N−メチルモルホリン、ヘキサ(N−メチル)メラミン、2,4,6−トリス(ジメチルアミノフェノール)、テトラメチルグアニジン、m−アミノフェノール等の三級アミン類:ポリビニルフェノール、ポリビニルフェノール臭素化物、フェノールノボラック、アルキルフェノールノボラック等のポリフェノール類:トリブチルホスフィン、トリフェニルホスフィン、トリス−2−シアノエチルホスフィン等の有機ホスフィン類:トリ−n−ブチル(2,5−ジヒドロキシフェニル)ホスホニウムブロマイド、ヘキサデシルトリブチルホスホニウムクロライド等のホスホニウム塩類:ベンジルトリメチルアンモニウムクロライド、フェニルトリブチルアンモニウムクロライド等の4級アンモニウム塩類:前記の多塩基酸無水物:ジフェニルヨード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アンチモネート、2,4,6−トリフェニルチオピリリウムヘキサフルオロホスフェートが挙げられる。 Specific examples of such an epoxy resin curing agent include 2-methylimidazole, 2-ethyl-4-methylimidazole, 1-benzyl-2-methylimidazole, 2-phenylimidazole, 2-phenyl-4-methyl-5. -Imidazole derivatives such as hydroxymethylimidazole: Guanamins such as acetoguanamine and benzoguanamine: Polyamines such as diaminodiphenylmethane, m-phenylenediamine, m-xylenediamine, diaminodiphenylsulfone, dicyandiamide, urea, urea derivatives, melamine, polybasic hydrazide Class: These organic acid salts and / or epoxy adducts: Amine complexes of boron trifluoride: ethyldiamino-S-triazine, 2,4-diamino-S-triazine, 2,4-diamino-6-xylyl-S- Thoria Triazine derivatives such as trimethylamine, N, N-dimethyloctylamine, N-benzyldimethylamine, pyridine, N-methylmorpholine, hexa (N-methyl) melamine, 2,4,6-tris (dimethylaminophenol) , Tertiary amines such as tetramethylguanidine and m-aminophenol: polyphenols such as polyvinylphenol, polyvinylphenol bromide, phenol novolak, alkylphenol novolak: organic such as tributylphosphine, triphenylphosphine, tris-2-cyanoethylphosphine Phosphines: Phosphonium salts such as tri-n-butyl (2,5-dihydroxyphenyl) phosphonium bromide, hexadecyltributylphosphonium chloride: benzyltrimethylammo Quaternary ammonium salts such as um chloride and phenyltributylammonium chloride: the above polybasic acid anhydrides: diphenyliodonium tetrafluoroborate, triphenylsulfonium hexafluoroantimonate, 2,4,6-triphenylthiopyrylium hexafluorophosphate Is mentioned.
エポキシ樹脂硬化剤は、単独あるいは2種類以上を組み合わせて用いられ、光硬化性樹脂組成物中に含まれるエポキシ樹脂硬化剤の量は、感光性樹脂組成物100質量%中、好ましくは0.01〜20質量%、更に好ましくは0.1〜10質量%用いられる。 The epoxy resin curing agent is used alone or in combination of two or more, and the amount of the epoxy resin curing agent contained in the photocurable resin composition is 100% by mass of the photosensitive resin composition, preferably 0.01. -20% by mass, more preferably 0.1-10% by mass.
また、本発明の感光性樹脂組成物は、さらに、必要に応じて、ジシアンジアミド等の(I)シアナミド化合物、あるいは、メラミン等の(J)トリアジン化合物を用いてもよい。これらは、配合成分をロールミル、ビーズミル等で均一に混練、混合することにより得ることができる。 Further, the photosensitive resin composition of the present invention may further use (I) a cyanamide compound such as dicyandiamide or a (J) triazine compound such as melamine as necessary. These can be obtained by uniformly kneading and mixing the blended components with a roll mill, a bead mill or the like.
<感光性エレメントの製造方法>
本発明の感光性エレメントは、例えば以下のようにして製造することができる。即ち、得られた感光性樹脂組成物を、固形分30質量%〜60質量%程度の塗布液として調製し、前記塗布液を支持フィルム等の支持体上に塗布して塗布層を形成し、前記塗布層を乾燥して感光層を形成することにより、本発明の感光性エレメントを製造することができる。
<Method for producing photosensitive element>
The photosensitive element of this invention can be manufactured as follows, for example. That is, the obtained photosensitive resin composition is prepared as a coating solution having a solid content of about 30% by mass to 60% by mass, and the coating solution is applied onto a support such as a support film to form a coating layer. The photosensitive element of this invention can be manufactured by drying the said coating layer and forming a photosensitive layer.
前記塗布液の支持体上への塗布は、例えば、ロールコーター、コンマコーター、グラビアコーター、エアーナイフコーター、ダイコーター、バーコーターの公知の方法により行うことができる。 Application of the coating solution onto the support can be carried out by a known method such as a roll coater, comma coater, gravure coater, air knife coater, die coater, or bar coater.
また、前記塗布層の乾燥は、塗布層から有機溶剤の少なくとも一部を除去することができれば特に制限はない。例えば、70℃〜150℃にて、5分間〜30分間程度行うことが好ましい。乾燥後、感光層中の残存有機溶剤量は、後の工程での有機溶剤の拡散を防止する観点から、2質量%以下とすることが好ましい。 The drying of the coating layer is not particularly limited as long as at least a part of the organic solvent can be removed from the coating layer. For example, it is preferable to carry out at 70 to 150 ° C. for about 5 to 30 minutes. After drying, the amount of the remaining organic solvent in the photosensitive layer is preferably 2% by mass or less from the viewpoint of preventing the diffusion of the organic solvent in the subsequent step.
前記感光性エレメントにおける感光層の厚みは、用途により適宜選択することができるが、乾燥後の厚みで1μm〜100μmであることが好ましく、1μm〜50μmであることがより好ましく、5μm〜40μmであることが更に好ましい。感光層の厚みが1μm以上であることで、工業的な塗工が容易になり、生産性が向上する。また100μm以下であることで、密着性及び解像度が向上する。 Although the thickness of the photosensitive layer in the photosensitive element can be appropriately selected depending on the use, it is preferably 1 μm to 100 μm, more preferably 1 μm to 50 μm, and more preferably 5 μm to 40 μm after drying. More preferably. Industrial coating becomes easy and productivity improves because the thickness of a photosensitive layer is 1 micrometer or more. Moreover, adhesiveness and resolution improve by being 100 micrometers or less.
感光性エレメントの形態は特に制限されない。例えば、シート状であってもよく、又は巻芯にロール状に巻き取った状態であってもよい。 The form of the photosensitive element is not particularly limited. For example, it may be in the form of a sheet, or may be in a state of being wound up in a roll shape around a core.
ロール状に巻き取る場合、支持フィルム等の支持体が外側になるように巻き取ることが好ましい。巻芯としては、ポリエチレン樹脂、ポリプロピレン樹脂、ポリスチレン樹脂、ポリ塩化ビニル樹脂、ABS樹脂(アクリロニトリル−ブタジエン−スチレン共重合体)等のプラスチックなどが挙げられる。このようにして得られたロール状の感光性エレメントロールの端面には、端面保護の見地から端面セパレータを設置することが好ましく、耐エッジフュージョンの見地から防湿端面セパレータを設置することが好ましい。また、梱包方法としては、透湿性の小さいブラックシートに包んで包装することが好ましい。 When it winds up in roll shape, it is preferable to wind up so that support bodies, such as a support film, may become an outer side. Examples of the winding core include plastics such as polyethylene resin, polypropylene resin, polystyrene resin, polyvinyl chloride resin, and ABS resin (acrylonitrile-butadiene-styrene copolymer). From the viewpoint of end face protection, it is preferable to install an end face separator on the end face of the roll-shaped photosensitive element roll thus obtained, and it is preferable to install a moisture-proof end face separator from the standpoint of edge fusion resistance. Moreover, as a packaging method, it is preferable to wrap and package in a black sheet with low moisture permeability.
本発明の感光性エレメントは、例えば、後述するフォトビア法による層間絶縁膜の製造方法、及び、プリント配線板の製造方法に好適に用いることができる。中でも、めっき処理によって導体上に回路を形成するプリント配線板の製造方法への適用に適している。 The photosensitive element of this invention can be used suitably for the manufacturing method of the interlayer insulation film by the photo via method mentioned later, and the manufacturing method of a printed wiring board, for example. Especially, it is suitable for the application to the manufacturing method of the printed wiring board which forms a circuit on a conductor by plating process.
<フォトビア法によるプリント配線板の製造方法>
本発明の感光性樹脂を用いた層間絶縁膜の製造方法の一例を以下に示す。なお、本発明は以下の方法に限定されるものではない。
<Method for manufacturing printed wiring board by photo via method>
An example of the manufacturing method of the interlayer insulation film using the photosensitive resin of this invention is shown below. The present invention is not limited to the following method.
フォトビア法によるセミアディティブ工法であるが、例えば、下記の工程から成る。
(1)層間絶縁膜の形成工程
導体回路上に感光性エレメントを真空プレスラミネートにより形成した後、層間接続用のビア加工を露光、現像で行い、その後、ポストUVキュア、熱キュアで樹脂の硬化を行う工程。
(2)デスミア処理による表面粗化と銅回路層の形成工程
デスミア処理により樹脂表面の粗化を行ったのちに、基板に無電解銅めっき処理を施す工程。さらにその後、無電解銅めっき上にドライフィルムレジストでパターンを形成した後に、電解銅めっきを行うことにより、銅の回路層を形成する工程。
(3)レジスト剥離と銅回路の形成工程
最後にドライフィルムレジストの剥離し、無電解めっき層をフラッシュエッチングにより除去することにより銅の回路を形成する工程。
Although it is a semi-additive construction method using a photo via method, it includes, for example, the following steps.
(1) Formation process of interlayer insulating film After forming a photosensitive element on a conductor circuit by vacuum press lamination, via processing for interlayer connection is performed by exposure and development, and then the resin is cured by post UV curing and thermal curing. The process of performing.
(2) Surface roughening by desmear treatment and copper circuit layer forming step A step of performing electroless copper plating treatment on the substrate after the resin surface is roughened by desmear treatment. Then, after forming a pattern with a dry film resist on electroless copper plating, the process of forming a copper circuit layer by performing electrolytic copper plating.
(3) Resist stripping and copper circuit forming step Finally, a dry film resist is stripped and a copper circuit is formed by removing the electroless plating layer by flash etching.
(1)層間絶縁膜の形成工程
層間絶縁膜の形成工程においては、公知の真空プレスラミネート法により感光性エレメントを圧着する。本発明の感光性エレメントから保護フィルムを除去した後、減圧下で感光性エレメントの感光層を加熱しながら基板に圧着する。圧着の際の感光層及び/又は基板の加熱は、70℃〜130℃の温度で行うことが好ましい。また圧着は、0.1MPa〜1.0MPa程度(1kgf/cm2〜10kgf/cm2程度)の圧力で行うことが好ましいが、これらの条件は必要に応じて適宜選択される。
(1) Formation process of interlayer insulation film In the formation process of an interlayer insulation film, a photosensitive element is crimped | bonded by the well-known vacuum press lamination method. After removing the protective film from the photosensitive element of the present invention, the photosensitive layer of the photosensitive element is pressure-bonded to the substrate under reduced pressure. The photosensitive layer and / or the substrate is preferably heated at a temperature of 70 ° C. to 130 ° C. during the pressure bonding. The crimping is preferably performed at a pressure of about 0.1MPa~1.0MPa (1kgf / cm 2 ~10kgf / cm 2 approximately), these conditions are appropriately selected as needed.
露光、現像工程においては、基板上に形成された感光層の少なくとも一部に活性光線を照射することで、活性光線が照射された部分が光硬化してパターンが形成される。 In the exposure and development steps, at least a part of the photosensitive layer formed on the substrate is irradiated with actinic rays, so that the portion irradiated with actinic rays is photocured to form a pattern.
露光方法としては、特に制限はなく、例えば、アートワークと呼ばれるネガ又はポジマスクパターンを介して活性光線を画像状に照射する方法(マスク露光法)が挙げられる。また、LDI(Laser Direct Imaging)露光法やDLP(Digital Light Processing)露光法などの直接描画露光法により活性光線を画像状に照射する方法を採用してもよい。 There is no restriction | limiting in particular as an exposure method, For example, the method (mask exposure method) which irradiates actinic light in an image form via the negative or positive mask pattern called an artwork is mentioned. Alternatively, a method of irradiating actinic rays in the form of an image by a direct drawing exposure method such as an LDI (Laser Direct Imaging) exposure method or a DLP (Digital Light Processing) exposure method may be employed.
活性光線の光源としては、公知の光源を用いることができ、例えば、カーボンアーク灯、水銀蒸気アーク灯、高圧水銀灯、キセノンランプ、アルゴンレーザ等のガスレーザー、YAGレーザー等の固体レーザー、半導体レーザー等の紫外線、可視光を有効に放射するものが用いられる。露光量は、使用する光源及び感光層の厚さ等によって適宜選定されるが、例えば高圧水銀灯からの紫外線照射の場合、感光層の厚さ1〜100μmでは、通常、10〜1000J/m2程度であり、15〜500J/m2がより好ましい。 As a light source of actinic light, a known light source can be used, for example, a carbon arc lamp, a mercury vapor arc lamp, a high pressure mercury lamp, a xenon lamp, a gas laser such as an argon laser, a solid laser such as a YAG laser, a semiconductor laser, etc. Those that effectively emit ultraviolet rays and visible light. The exposure amount is appropriately selected depending on the light source used, the thickness of the photosensitive layer, and the like. For example, in the case of ultraviolet irradiation from a high-pressure mercury lamp, the thickness of the photosensitive layer is usually about 10 to 1000 J / m 2 when the photosensitive layer thickness is 1 to 100 μm. 15 to 500 J / m 2 is more preferable.
現像においては、前記感光層の未硬化部分が基板上から除去されることで、光硬化した硬化物からなる層間絶縁膜が基板上に形成される。 In the development, an uncured portion of the photosensitive layer is removed from the substrate, whereby an interlayer insulating film made of a photocured cured product is formed on the substrate.
感光層上に支持フィルム等の支持体が存在している場合には、支持フィルムを除去してから、上記露光部分以外の未露光部分の除去(現像)を行う。現像方法には、ウェット現像とドライ現像とがあるが、ウェット現像が広く用いられている。 When a support such as a support film is present on the photosensitive layer, the support film is removed, and then unexposed portions other than the exposed portions are removed (developed). Development methods include wet development and dry development, but wet development is widely used.
ウェット現像による場合、感光性樹脂組成物に対応した現像液を用いて、公知の現像方法により現像する。現像方法としては、ディップ方式、パドル方式、スプレー方式、ブラッシング、スラッピング、スクラッビング、揺動浸漬等を用いた方法が挙げられ、解像度向上の観点からは、高圧スプレー方式が最も適している。これら2種以上の方法を組み合わせて現像を行ってもよい。 In the case of wet development, development is performed by a known development method using a developer corresponding to the photosensitive resin composition. Examples of the developing method include a method using a dipping method, a paddle method, a spray method, brushing, slapping, scrubbing, rocking immersion, and the like. From the viewpoint of improving resolution, the high pressure spray method is most suitable. You may develop by combining these 2 or more types of methods.
現像液の構成は感光性樹脂組成物の構成に応じて適宜選択される。例えば、アルカリ性水溶液、水系現像液及び有機溶剤系現像液が挙げられる。 The configuration of the developer is appropriately selected according to the configuration of the photosensitive resin composition. For example, an alkaline aqueous solution, an aqueous developer, and an organic solvent developer can be used.
本発明においては、現像工程において未露光部分を除去した後、0.2J/cm2〜10J/cm2程度のポストUVキュア、及び60℃〜250℃程度の加熱を必要に応じて行うことにより絶縁材をさらに硬化してもよい。 In the present invention, after the removal of the unexposed portions in the development step, 0.2J / cm 2 ~10J / cm 2 of about post UV cure, and by performing as required heating at about 60 ° C. to 250 DEG ° C. The insulating material may be further cured.
(2)デスミア処理による表面粗化と銅回路層の形成工程
必要に応じてデスミア処理により樹脂表面の粗化を行うことができる。デスミア処理液(酸化性粗化液)としては、例えば、クロム/硫酸粗化液、アルカリ過マンガン酸粗化液(過マンガン酸ナトリウム粗化液等)、フッ化ナトリウム/クロム/硫酸粗化液等を用いることができる。
(2) Surface roughening by desmear treatment and formation process of copper circuit layer If necessary, the resin surface can be roughened by desmear treatment. Examples of desmear treatment liquid (oxidizing roughening liquid) include chromium / sulfuric acid roughening liquid, alkaline permanganic acid roughening liquid (such as sodium permanganate roughening liquid), and sodium fluoride / chromium / sulfuric acid roughening liquid. Etc. can be used.
デスミア処理後、セミアディティブプロセスにより、回路形成並びにビアの導通が行われる。セミアディティブプロセスにおいてはまず、デスミア処理後のビア底、ビア壁面、及び絶縁膜の表面全体にパラジウム触媒等を用いた無電解銅処理を施してシード層を形成する。シード層の無電解銅めっきは、電解銅めっきを施すための給電層を形成するためのものであり、通常は0.1〜2.0μm程度の厚さに形成する。シード層が薄すぎると続く電気めっき時の接続信頼性が低下する傾向があり、シード層が厚すぎると後に配線間のシード層をフラッシュエッチする際のエッチング量を大きくせねばならず、エッチングの際に配線に与えるダメージが大きくなる傾向がある。 After the desmear process, circuit formation and via conduction are performed by a semi-additive process. In the semi-additive process, first, a seed layer is formed by performing electroless copper treatment using a palladium catalyst or the like on the bottom of the via, the wall surface of the via, and the entire surface of the insulating film after the desmear treatment. The electroless copper plating of the seed layer is for forming a power feeding layer for performing electrolytic copper plating, and is usually formed to a thickness of about 0.1 to 2.0 μm. If the seed layer is too thin, the connection reliability at the time of subsequent electroplating tends to decrease.If the seed layer is too thick, the etching amount when the seed layer between the wirings is later flash-etched must be increased. There is a tendency that the damage given to the wiring becomes large.
無電解銅処理は銅イオンと還元剤の反応により樹脂表面に金属銅が析出することで行われる。無電解めっき及び電解めっきは公知の方法であればよく、特定の方法に限定されるものではないが、無電解めっき処理工程の触媒はパラジウム−すず混合触媒からなり、触媒の1次粒子径が10nm以下であることが好ましい。また、無電解めっき処理工程のめっき組成が次亜リン酸を還元剤として含有することが好ましい。 The electroless copper treatment is performed by depositing metallic copper on the resin surface by the reaction between copper ions and a reducing agent. The electroless plating and the electroplating may be any known method and are not limited to a specific method. However, the catalyst in the electroless plating treatment step is composed of a palladium-tin mixed catalyst, and the primary particle size of the catalyst is It is preferable that it is 10 nm or less. Moreover, it is preferable that the plating composition of the electroless plating treatment step contains hypophosphorous acid as a reducing agent.
無電解銅めっきとしてはアトテックジャパン(株)社製の「MSK−DK」、上村工業(株)社製「スルカップ PEA ver.4」などが挙げられる。 Examples of the electroless copper plating include “MSK-DK” manufactured by Atotech Japan Co., Ltd., “Sulcup PEA ver. 4” manufactured by Uemura Kogyo Co., Ltd., and the like.
無電解銅めっき処理を施した後、無電解銅めっき上に、ロールラミネーターにてドライフィルムレジストが熱圧着される。ドライフィルムレジストの厚みは電気銅めっき後の配線高さよりも高い範囲になければならず、5〜30μmのものが好ましく用いられる。 After performing the electroless copper plating treatment, a dry film resist is thermocompression-bonded on the electroless copper plating by a roll laminator. The thickness of the dry film resist must be in a range higher than the wiring height after electrolytic copper plating, and a thickness of 5 to 30 μm is preferably used.
ドライフィルムレジストとしては日立化成(株)製「フォテック」シリーズなどが用いられる。ドライフィルムレジスト形成後、配線パターンの描画されたマスクを通してドライフィルムレジストの露光を行う。露光は前記感光性エレメントと同様の装置、光源で行うことも可能である。露光後、支持フィルムを剥離し、アルカリ水溶液を用いて現像を行い、未露光部分を除去しパターンを形成する。この後に必要に応じてプラズマなどを用いてドライフィルムレジストの現像残渣を除去する作業を行っても良い。現像後、電気銅めっきを行い銅回路層の形成、ビアフィリングを行う。 As a dry film resist, Hitachi Chemical's “Fotec” series and the like are used. After the dry film resist is formed, the dry film resist is exposed through a mask on which a wiring pattern is drawn. The exposure can be performed with the same apparatus and light source as the photosensitive element. After exposure, the support film is peeled off, and development is performed using an alkaline aqueous solution to remove unexposed portions and form a pattern. Thereafter, if necessary, an operation of removing the development residue of the dry film resist may be performed using plasma or the like. After development, electrolytic copper plating is performed to form a copper circuit layer and to perform via filling.
(3)レジスト剥離と銅回路の形成工程
電気銅めっき後、アルカリ水溶液やアミン系剥離剤を用いてドライフィルムレジストの剥離を行う。ドライフィルムレジストの剥離後、配線間のシード層を除去する目的でフラッシュエッチを行う。フラッシュエッチは硫酸と過酸化水素などの酸性、酸化性溶液を用いて行われる。具体的には荏原ユージライト(株)製「SAC」、三菱ガス化学(株)製「CPE−800」が挙げられる。フラッシュエッチ後、必要に応じて配線間の部分に付着したパラジウム等の除去を行う。パラジウムの除去は硝酸、塩酸などの酸性溶液を用いて好ましく行われる。具体的には荏原ユージライト「PJ」溶液が挙げられる。
(3) Resist stripping and copper circuit forming step After electrolytic copper plating, the dry film resist is stripped using an alkaline aqueous solution or an amine-based stripper. After removing the dry film resist, flash etching is performed for the purpose of removing the seed layer between the wirings. The flash etch is performed using an acidic or oxidizing solution such as sulfuric acid and hydrogen peroxide. Specifically, “SAC” manufactured by Sugawara Eugleite Co., Ltd. and “CPE-800” manufactured by Mitsubishi Gas Chemical Co., Ltd. may be mentioned. After the flash etching, palladium or the like attached to the portion between the wirings is removed as necessary. Palladium removal is preferably performed using an acidic solution such as nitric acid or hydrochloric acid. Specifically, Sugawara Eugelite “PJ” solution may be mentioned.
ドライフィルムレジスト剥離の後、またはフラッシュエッチ工程の後、ポストベーク工程を行う。ポストベーク工程は、未反応の熱硬化成分を完全に熱硬化し、さらにそれによって絶縁信頼性、硬化特性、めっき密着性を向上させる。熱硬化条件は樹脂組成物の種類等によっても異なるが、硬化温度が150〜240℃、硬化時間が15〜100分であるのが好ましい。 After the dry film resist is peeled off or after the flash etch process, a post bake process is performed. The post-baking step completely cures the unreacted thermosetting component, thereby further improving the insulation reliability, curing characteristics, and plating adhesion. Although the thermosetting conditions vary depending on the type of the resin composition, the curing temperature is preferably 150 to 240 ° C. and the curing time is preferably 15 to 100 minutes.
ポストベークにより、一通りのフォトビア法によるプリント配線板の製造工程は完成するが、必要な絶縁層数に応じ、本プロセスを繰り返して基板を製造する。また、最外層にソルダーレジスト層を形成する。 The post-baking completes a printed wiring board manufacturing process by a photovia method, but this process is repeated according to the required number of insulating layers to manufacture a substrate. Further, a solder resist layer is formed as the outermost layer.
本発明の感光性樹脂組成物は、プリント配線板の製造に使用することができるが、それに限定されるものでは無く、FOWLP(Fan Out Wafer Level Package)等のウェハプロセスの製造工程に使用してもよい。 The photosensitive resin composition of the present invention can be used for production of a printed wiring board, but is not limited thereto, and is used for the production process of a wafer process such as FOWLP (Fan Out Wafer Level Package). Also good.
以下、実施例により本発明を更に詳細に説明するが、本発明はこれらの実施例に限定されるものではない。なお、合成例中、実施例中の部、及び表中の配合量は質量部を示す。 EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited to these Examples. In addition, the part in an Example and the compounding quantity in a table | surface in a synthesis example show a mass part.
(合成例1;酸変性エポキシアクリレートの合成)
ビスフェノールFノボラック型エポキシ樹脂(EXA−7376、DIC株式会社製)350質量部、アクリル酸70質量部、メチルハイドロキノン0.5質量部、カルビトールアセテート120質量部を仕込み、90℃に加熱して攪拌することにより反応させ、混合物を完全に溶解した。次に、得られた溶液を60℃に冷却し、トリフェニルホスフィン2質量部を加え、100℃に加熱して、溶液の酸価が1mgKOH/gになるまで反応させた。反応後の溶液に、テトラヒドロ無水フタル酸(THPAC)98質量部とカルビトールアセテート85質量部とを加え、80℃に加熱して約6時間反応させた後に冷却し、固形分の濃度が73質量%である(A)成分としての酸変性エポキシアクリレート樹脂(A−1)の溶液を得た。
(Synthesis Example 1: Synthesis of acid-modified epoxy acrylate)
350 parts by mass of bisphenol F novolac epoxy resin (EXA-7376, manufactured by DIC Corporation), 70 parts by mass of acrylic acid, 0.5 parts by mass of methylhydroquinone, and 120 parts by mass of carbitol acetate were heated to 90 ° C. and stirred. And the mixture was completely dissolved. Next, the obtained solution was cooled to 60 ° C., 2 parts by mass of triphenylphosphine was added, and the mixture was heated to 100 ° C. until the acid value of the solution reached 1 mgKOH / g. To the solution after the reaction, 98 parts by mass of tetrahydrophthalic anhydride (THPAC) and 85 parts by mass of carbitol acetate were added, heated to 80 ° C., reacted for about 6 hours, cooled, and the solid content was 73 parts by mass. % Solution of acid-modified epoxy acrylate resin (A-1) as component (A).
(合成例2;酸変性エポキシアクリレートの合成)
フェノールノボラック型エポキシ樹脂(DIC(株)製、「N770(商品名)」、一般式(11)において、Y11=グリシジル基、R11=メチル基)220質量部、アクリル酸72質量部、ハイドロキノン1質量部、カルビトールアセテート180質量部を混合し、90℃に加熱、撹拌して反応混合物を溶解した。次いで、60℃に冷却した後、塩化ベンジルトリメチルアンモニウム1質量部を混合し100℃に加熱して、酸価が1mgKOH/gになるまで反応させた。次いで、テトラヒドロ無水フタル酸152質量部とカルビトールアセテート100質量部とを混合し、80℃に加熱し、6時間撹拌した。室温まで冷却した後、固形分濃度が60質量%になるようにカルビトールアセテートで希釈して(A)成分としての酸変性エポキシアクリレート樹脂(A−2)を得た。
(Synthesis Example 2: Synthesis of acid-modified epoxy acrylate)
Phenol novolac type epoxy resin (manufactured by DIC Corporation, “N770 (trade name)”, in general formula (11), Y11 = glycidyl group, R11 = methyl group) 220 parts by mass, acrylic acid 72 parts by mass, hydroquinone 1 part by mass And 180 parts by mass of carbitol acetate were mixed and heated to 90 ° C. and stirred to dissolve the reaction mixture. Subsequently, after cooling to 60 ° C., 1 part by mass of benzyltrimethylammonium chloride was mixed and heated to 100 ° C., and reacted until the acid value became 1 mgKOH / g. Next, 152 parts by mass of tetrahydrophthalic anhydride and 100 parts by mass of carbitol acetate were mixed, heated to 80 ° C., and stirred for 6 hours. After cooling to room temperature, it was diluted with carbitol acetate so that the solid content concentration was 60% by mass to obtain an acid-modified epoxy acrylate resin (A-2) as component (A).
実施例1〜3、及び比較例1〜3について、表1に示す配合量(重量部)で混合し、3本ロールミルで混練し感光性樹脂組成物溶液を得た。最終的に、固形分濃度が60質量%になるようにプロピレングリコールモノメチルエーテルアセテートを加えて、感光性樹脂組成物を調製した。 About Examples 1-3 and Comparative Examples 1-3, it mixed by the compounding quantity (part by weight) shown in Table 1, knead | mixed with the 3 roll mill, and obtained the photosensitive resin composition solution. Finally, propylene glycol monomethyl ether acetate was added so that the solid content concentration was 60% by mass to prepare a photosensitive resin composition.
次いで、調製した感光性樹脂組成物溶液を支持層である25μm厚のポリエチレンテレフタレートフィルム(G2−25、帝人(株)製、商品名)上に均一に塗布することにより感光性樹脂組成物層として感光性フィルムを形成し、それを、熱風対流式乾燥機を用いて100℃で約10分間乾燥した。感光性樹脂組成物層の乾燥後の膜厚は、25μmであった。 Subsequently, the prepared photosensitive resin composition solution is uniformly coated on a 25 μm-thick polyethylene terephthalate film (G2-25, manufactured by Teijin Ltd., trade name) as a support layer to form a photosensitive resin composition layer. A photosensitive film was formed and dried at 100 ° C. for about 10 minutes using a hot air convection dryer. The film thickness after drying of the photosensitive resin composition layer was 25 μm.
続いて、感光性樹脂組成物層の支持体と接している側とは反対側の表面上にOPP二軸延伸ポリプロピレンフィルム(MA−411、王子特殊紙(株)製、商品名)を保護フィルムとして、貼り合わせ感光性エレメントを得た。 Subsequently, an OPP biaxially stretched polypropylene film (MA-411, manufactured by Oji Specialty Paper Co., Ltd., trade name) is provided on the surface opposite to the side in contact with the support of the photosensitive resin composition layer as a protective film. As a result, a laminated photosensitive element was obtained.
A−3:ZCR−8018:ビフェニル骨格含有酸変性エポキシアクリレート(日本化薬(株)製、商品名)
A−4:カヤラッドDPHA:ジペンタエリスリトールペンタアクリレート(日本化薬(株)製、商品名)
B−1:イルガキュア907:2−メチル−[4−(メチルチオ)フェニル]モルフォリノ−1−プロパノン(BASFジャパン(株)製、商品名)
B−2:DETX−S:2,4−ジエチルチオキサントン(日本化薬(株)製、商品名)
C−1:NC−3000H:ビフェニルアラルキルエポキシ樹脂(日本化薬(株)製、商品名)
C−2:PB3600:エポキシ化ポリブタジエン(ダイセル化学(株)製、商品名)
D−1:BMI−4000:ビスマレイミド(大和化成工業(株)製、商品名)
F−1:パーヘキシン25B:2,5−ジメチル−2,5−ビス(tert−ブチルペルオキシ)−3−ヘキシン(日本油脂(株)製、商品名)
G−1:MEKスラリー:シリカスラリー(アドマテックス社製、サンプル名)
A-3: ZCR-8018: Biphenyl skeleton-containing acid-modified epoxy acrylate (Nippon Kayaku Co., Ltd., trade name)
A-4: Kayarad DPHA: Dipentaerythritol pentaacrylate (trade name, manufactured by Nippon Kayaku Co., Ltd.)
B-1: Irgacure 907: 2-methyl- [4- (methylthio) phenyl] morpholino-1-propanone (trade name, manufactured by BASF Japan Ltd.)
B-2: DETX-S: 2,4-diethylthioxanthone (trade name, manufactured by Nippon Kayaku Co., Ltd.)
C-1: NC-3000H: Biphenyl aralkyl epoxy resin (Nippon Kayaku Co., Ltd., trade name)
C-2: PB3600: Epoxidized polybutadiene (manufactured by Daicel Chemical Industries, Ltd., trade name)
D-1: BMI-4000: Bismaleimide (manufactured by Daiwa Kasei Kogyo Co., Ltd., trade name)
F-1: Perhexin 25B: 2,5-dimethyl-2,5-bis (tert-butylperoxy) -3-hexyne (Nippon Yushi Co., Ltd., trade name)
G-1: MEK slurry: Silica slurry (manufactured by Admatechs, sample name)
[解像性の評価]
12μm厚の銅箔をガラスエポキシ基材に積層したプリント配線板用基板(MCL−E−679、日立化成(株)製、商品名)の銅表面を粗化前処理液CZ−8100(メック(株)製)で処理し、水洗後、乾燥した。このプリント配線板用基板上にプレス式真空ラミネーター(MVLP−500、(株)名機製作所製、商品名)を用いて、プレス熱板温度70℃、真空引き時間20秒、ラミネートプレス時間30秒、気圧4kPa以下、圧着圧力0.4MPaの条件の下、前記感光性エレメントの保護フィルムを剥離して積層し、評価用積層体を得た。
[Evaluation of resolution]
A copper surface of a printed wiring board substrate (MCL-E-679, manufactured by Hitachi Chemical Co., Ltd., trade name) in which a 12 μm-thick copper foil is laminated on a glass epoxy substrate is subjected to a roughening pretreatment liquid CZ-8100 (MEC ( Manufactured by Co., Ltd.), washed with water and dried. On this printed wiring board substrate, using a press-type vacuum laminator (MVLP-500, manufactured by Meiki Seisakusho Co., Ltd., trade name), press hot plate temperature 70 ° C., evacuation time 20 seconds, laminating press time 30 seconds. The protective film of the photosensitive element was peeled and laminated under the conditions of an atmospheric pressure of 4 kPa or less and a pressure bonding pressure of 0.4 MPa to obtain a laminate for evaluation.
その後、室温で1時間以上放置した後、支持フィルムを剥離、除去し、41段ステップタブレットを設置し、超高圧水銀灯を光源としたダイレクトイメージング露光装置DXP−3512((株)オーク製作所製)を用いて露光を行った。露光パターンは、Φ30μmから100μmまでのドットが格子状に配列したパターンを用いた。 Then, after standing for 1 hour or more at room temperature, the support film was peeled and removed, a 41-step tablet was installed, and a direct imaging exposure apparatus DXP-3512 (manufactured by Oak Manufacturing Co., Ltd.) using an ultrahigh pressure mercury lamp as the light source was used. Were used for exposure. As the exposure pattern, a pattern in which dots from Φ30 μm to 100 μm were arranged in a grid pattern was used.
露光後から室温で30分間放置した後、30℃の1質量%炭酸ナトリウム水溶液で未露光部の感光性樹脂組成物を60秒間スプレー現像した。現像後、41段ステップタブレットの光沢残存ステップ段数が10.0となる露光エネルギー量を感光性樹脂組成物層の感度(単位;mJ/cm2)とした。この感度で露光したパターンを用いて、感光性樹脂組成物層の評価を行った。 After exposure, the mixture was allowed to stand at room temperature for 30 minutes, and then the unexposed photosensitive resin composition was spray-developed with a 1% by mass aqueous sodium carbonate solution at 30 ° C. for 60 seconds. After development, the exposure energy amount at which the number of remaining gloss steps of the 41-step tablet was 10.0 was defined as the sensitivity (unit: mJ / cm 2 ) of the photosensitive resin composition layer. The photosensitive resin composition layer was evaluated using the pattern exposed with this sensitivity.
解像性の評価は、ステップ段数が10.0となる露光エネルギー量で露光、スプレー現像し、現像処理後に光学顕微鏡を用いてビアパターンを観察して評価した。ドットパターンのビアφ60μm部分が開口している場合を「A」、開口していない場合を「B」と判定した。ビア開口している「A」の判定が良好な特性を示している。結果を表2に示した。 The evaluation of the resolution was performed by exposing and spray developing with an exposure energy amount with a step number of 10.0 and observing the via pattern using an optical microscope after the development process. The case where the via φ 60 μm portion of the dot pattern was opened was determined as “A”, and the case where it was not opened was determined as “B”. The determination of “A” having a via opening shows good characteristics. The results are shown in Table 2.
[ピール強度の評価]
12μm厚の銅箔をガラスエポキシ基材に積層したプリント配線板用基板(MCL−E−679、日立化成(株)製、商品名)の銅表面を粗化前処理液CZ−8100(メック(株)製)で処理し、水洗後、乾燥した。このプリント配線板用基板上にプレス式真空ラミネーター(MVLP−500、(株)名機製作所製、商品名)を用いて、プレス熱板温度70℃、真空引き時間20秒、ラミネートプレス時間30秒、気圧4kPa以下、圧着圧力0.4MPaの条件の下、前記感光性エレメントの保護フィルムを剥離して積層し、評価用積層体を得た。
[Evaluation of peel strength]
A copper surface of a printed wiring board substrate (MCL-E-679, manufactured by Hitachi Chemical Co., Ltd., trade name) in which a 12 μm-thick copper foil is laminated on a glass epoxy substrate is subjected to a roughening pretreatment liquid CZ-8100 (MEC ( Manufactured by Co., Ltd.), washed with water and dried. On this printed wiring board substrate, using a press-type vacuum laminator (MVLP-500, manufactured by Meiki Seisakusho Co., Ltd., trade name), press hot plate temperature 70 ° C., evacuation time 20 seconds, laminating press time 30 seconds. The protective film of the photosensitive element was peeled and laminated under the conditions of an atmospheric pressure of 4 kPa or less and a pressure bonding pressure of 0.4 MPa to obtain a laminate for evaluation.
その後、室温で1時間以上放置した後、支持フィルムを剥離、除去し、41段ステップタブレットを設置し、超高圧水銀灯を光源とした平行光露光機EXM−1201((株)オーク製作所製)を用いて、光沢残存ステップ段数が10.0となる露光エネルギー量で全面露光を行った。露光後から室温で30分間放置した後、30℃の1質量%炭酸ナトリウム水溶液で未露光部の感光性樹脂組成物を60秒間スプレー現像した。 Then, after standing at room temperature for 1 hour or longer, the support film was peeled and removed, a 41-step tablet was installed, and a parallel light exposure machine EXM-1201 (manufactured by Oak Manufacturing Co., Ltd.) using an ultrahigh pressure mercury lamp as the light source was used. The entire surface exposure was performed with the exposure energy amount that the number of remaining gloss steps was 10.0. After exposure, the mixture was allowed to stand at room temperature for 30 minutes, and then the unexposed photosensitive resin composition was spray-developed with a 1% by mass aqueous sodium carbonate solution at 30 ° C. for 60 seconds.
その後、高圧水銀灯照射タイプのUVコンベア装置((株)オーク製作所製)で2J/cm2となるコンベア速度でポストUVキュアを行い、その後、熱風循環式乾燥機((株)二葉科学製)にて170℃/1時間のポスト熱キュアを行った。 Then, post UV cure is performed at a conveyor speed of 2 J / cm 2 with a high-pressure mercury lamp irradiation type UV conveyor device (manufactured by Oak Manufacturing Co., Ltd.), and then the hot air circulation dryer (manufactured by Futaba Kagaku Corporation) is used. And post-heat curing at 170 ° C./1 hour.
上記基板の粗化処理として、膨潤液「スウェリングディップセキュリガントP」(アトテックジャパン株式会社製)を70℃、5分、粗化液「ドージングセキュリガントP500J」(アトテックジャパン株式会社製)を70℃、10分、中和液「リダクションコンディショナーセキュリガントP500」(アトテックジャパン株式会社製)を40℃、5分を使用し、デスミア処理を実施した。 As the roughening treatment for the substrate, the swelling liquid “Swelling Dip Securigant P” (manufactured by Atotech Japan Co., Ltd.) is 70 ° C. for 5 minutes, and the roughening liquid “Dosing Securigant P500J” (manufactured by Atotech Japan Co., Ltd.) is 70 Desmear treatment was carried out at 40 ° C. for 5 minutes using a neutralizing solution “Reduction Conditioner Securigant P500” (manufactured by Atotech Japan Co., Ltd.) at 10 ° C. for 10 minutes.
この後、無電解めっき液「プリガントMSK−DK」(アトテックジャパン株式会社製)を30℃、20分、電気めっき液「カパラシドHL」(アトテックジャパン株式会社製)を24℃、2A/dm2、2時間を実施しピール測定用の評価基板を準備した。 Then, electroless plating solution “Prigant MSK-DK” (manufactured by Atotech Japan Co., Ltd.) at 30 ° C. for 20 minutes, electroplating solution “Capaside HL” (manufactured by Atotech Japan Co., Ltd.) at 24 ° C., 2 A / dm 2 , The evaluation board | substrate for 2 hours was implemented and peel measurement was prepared.
めっきピール強度の測定は、めっき銅厚を35μm厚に設定し、評価サンプルの導体引き剥がし強さを測定した。引き剥がしは、垂直引き剥がし強さを測定した。測定は、室温23℃で行った。測定方法は、JIS−C−6481に準じた。なお、ピール強度は0.4kN/m以上あれば良好と判定した。結果を表2に示した。 The plating peel strength was measured by setting the plated copper thickness to 35 μm and measuring the conductor peeling strength of the evaluation sample. For peeling, the vertical peeling strength was measured. The measurement was performed at a room temperature of 23 ° C. The measuring method was based on JIS-C-6482. The peel strength was determined to be good if it was 0.4 kN / m or more. The results are shown in Table 2.
[HAST耐性の評価]
コア材に12μm厚の銅箔をガラスエポキシ基材に積層したプリント配線板用基板(MCL−E−679FG、日立化成(株)製、商品名)、セミアディティブ配線形成用ビルドアップ材(AS−Z6、日立化成(株)製、商品名)を用いて、ライン/スペースが12μm/12μmのくし型電極を作製し、これを評価基板とした。
[Evaluation of HAST resistance]
Printed wiring board substrate (MCL-E-679FG, manufactured by Hitachi Chemical Co., Ltd., trade name) in which 12 μm thick copper foil is laminated on glass epoxy base material as core material, build-up material for forming semi-additive wiring (AS- Comb electrodes having a line / space of 12 μm / 12 μm were prepared using Z6, a product name of Hitachi Chemical Co., Ltd., and used as an evaluation substrate.
この評価基板におけるくし型電極上に、上記「解像性の評価」と同様にして感光性エレメントの硬化物からなる層間絶縁膜を形成し(くし型電極部分に絶縁膜が残るように露光し現像、紫外線照射、加熱処理を行い形成)、その後、130℃、85%RH、6V条件下に200時間晒した。その後、抵抗値の測定し絶縁膜のHAST耐性を評価した。抵抗値が10−6Ω以下となった時間をマイグレーションの発生時間とし、200時間経過後で、マイグレーションの発生がないものを「A」、100時間から200時間の間で発生したものを「B」、100時間未満で発生したものを「C」と判定した。結果を表2に示した。 An inter-layer insulating film made of a cured photosensitive element is formed on the comb-shaped electrode on this evaluation substrate in the same manner as in the above “evaluation of resolution” (exposure is performed so that the insulating film remains on the comb-shaped electrode portion). Development, ultraviolet irradiation, and heat treatment were performed), followed by exposure to 130 ° C., 85% RH, 6 V for 200 hours. Thereafter, the resistance value was measured and the HAST resistance of the insulating film was evaluated. The time when the resistance value becomes 10 −6 Ω or less is regarded as the occurrence time of migration. After 200 hours, “A” indicates that no migration occurs, and “B” indicates that the resistance occurs between 100 hours and 200 hours. ”, Those that occurred in less than 100 hours were determined as“ C ”. The results are shown in Table 2.
表2に示される結果から明らかなように、実施例1〜3の本発明の感光性エレメントは、優れた解像度を有しつつ、かつ、絶縁材上形成された導体層との優れたピール強度を有し、加えて、優れた絶縁信頼性(HAST耐性)を有することが確認された。 As is clear from the results shown in Table 2, the photosensitive elements of the present invention in Examples 1 to 3 have excellent resolution and excellent peel strength with the conductor layer formed on the insulating material. In addition, it was confirmed to have excellent insulation reliability (HAST resistance).
本発明によれば、解像性、密着性、絶縁信頼性に優れた多層プリント配線板等の絶縁層形成に好適な感光性樹脂組成物、感光性エレメントを提供することができる。また、電子機器用のプリント配線板、として有用である。さらに、FOWLP(Fan Out Wan Out Wafer Package)の層間絶縁材としても有効である。 ADVANTAGE OF THE INVENTION According to this invention, the photosensitive resin composition and photosensitive element suitable for insulating layer formation, such as a multilayer printed wiring board excellent in resolution, adhesiveness, and insulation reliability, can be provided. It is also useful as a printed wiring board for electronic equipment. Furthermore, it is also effective as an interlayer insulating material for FOWLP (Fan Out Wan Out Wafer Package).
Claims (10)
[式(1)中、R1〜R3はそれぞれ(メタ)アクリロイル基又はカルボキシル基を有する基を示す。] The photosensitive resin composition according to claim 1 or 2, wherein the (A1) photopolymerizable compound having a biphenyl skeleton and having an ethylenically unsaturated group is a compound represented by the following general formula (1). .
[In the formula (1), R1 to R3 each represent a group having a (meth) acryloyl group or a carboxyl group. ]
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