TWI585532B - 負性厚膜光阻 - Google Patents
負性厚膜光阻 Download PDFInfo
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- TWI585532B TWI585532B TW102121225A TW102121225A TWI585532B TW I585532 B TWI585532 B TW I585532B TW 102121225 A TW102121225 A TW 102121225A TW 102121225 A TW102121225 A TW 102121225A TW I585532 B TWI585532 B TW I585532B
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- Taiwan
- Prior art keywords
- group
- methyl
- mol
- negative photosensitive
- polymer
- Prior art date
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- 229920002120 photoresistant polymer Polymers 0.000 title claims description 64
- -1 hydroxyalkyl acrylate Chemical compound 0.000 claims description 82
- 239000000203 mixture Substances 0.000 claims description 69
- 229920000642 polymer Polymers 0.000 claims description 62
- 238000000034 method Methods 0.000 claims description 26
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 24
- 150000003254 radicals Chemical class 0.000 claims description 24
- 239000002904 solvent Substances 0.000 claims description 21
- 239000000178 monomer Substances 0.000 claims description 19
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate group Chemical group C(C=C)(=O)[O-] NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 16
- 230000005855 radiation Effects 0.000 claims description 14
- 239000002253 acid Substances 0.000 claims description 13
- 239000000758 substrate Substances 0.000 claims description 12
- 238000004132 cross linking Methods 0.000 claims description 9
- 239000003999 initiator Substances 0.000 claims description 9
- 239000007795 chemical reaction product Substances 0.000 claims description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 7
- 125000003118 aryl group Chemical group 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 229910052731 fluorine Inorganic materials 0.000 claims description 6
- 125000001072 heteroaryl group Chemical group 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 150000008064 anhydrides Chemical class 0.000 claims description 4
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 4
- 125000002768 hydroxyalkyl group Chemical group 0.000 claims description 4
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 4
- 125000004339 2,3-dimethylpent-3-yl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])(*)C([H])(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 3
- 125000003107 substituted aryl group Chemical group 0.000 claims description 3
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 3
- 125000004192 tetrahydrofuran-2-yl group Chemical group [H]C1([H])OC([H])(*)C([H])([H])C1([H])[H] 0.000 claims description 3
- 125000004187 tetrahydropyran-2-yl group Chemical group [H]C1([H])OC([H])(*)C([H])([H])C([H])([H])C1([H])[H] 0.000 claims description 3
- 125000003158 alcohol group Chemical group 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims 2
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 claims 1
- 150000002924 oxiranes Chemical class 0.000 claims 1
- 238000000576 coating method Methods 0.000 description 25
- 239000011248 coating agent Substances 0.000 description 24
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 20
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 20
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 14
- 239000000463 material Substances 0.000 description 14
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 13
- 238000006116 polymerization reaction Methods 0.000 description 11
- 239000007787 solid Substances 0.000 description 11
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 10
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 10
- GNSFRPWPOGYVLO-UHFFFAOYSA-N 3-hydroxypropyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCO GNSFRPWPOGYVLO-UHFFFAOYSA-N 0.000 description 10
- OZAIFHULBGXAKX-VAWYXSNFSA-N AIBN Substances N#CC(C)(C)\N=N\C(C)(C)C#N OZAIFHULBGXAKX-VAWYXSNFSA-N 0.000 description 10
- 238000001816 cooling Methods 0.000 description 10
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 10
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- 239000011541 reaction mixture Substances 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 238000007747 plating Methods 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 8
- 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 8
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 7
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 7
- 230000018109 developmental process Effects 0.000 description 7
- 239000003112 inhibitor Substances 0.000 description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- 150000002148 esters Chemical class 0.000 description 6
- LZCLXQDLBQLTDK-UHFFFAOYSA-N ethyl 2-hydroxypropanoate Chemical compound CCOC(=O)C(C)O LZCLXQDLBQLTDK-UHFFFAOYSA-N 0.000 description 6
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 6
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 5
- NNJVILVZKWQKPM-UHFFFAOYSA-N Lidocaine Chemical compound CCN(CC)CC(=O)NC1=C(C)C=CC=C1C NNJVILVZKWQKPM-UHFFFAOYSA-N 0.000 description 5
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 5
- 244000028419 Styrax benzoin Species 0.000 description 5
- 235000000126 Styrax benzoin Nutrition 0.000 description 5
- 235000008411 Sumatra benzointree Nutrition 0.000 description 5
- 229960002130 benzoin Drugs 0.000 description 5
- 235000019382 gum benzoic Nutrition 0.000 description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- CERQOIWHTDAKMF-UHFFFAOYSA-M methacrylate group Chemical group C(C(=C)C)(=O)[O-] CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 5
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 4
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 4
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 4
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Polymers CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 4
- 239000012965 benzophenone Substances 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 4
- 125000000524 functional group Chemical group 0.000 description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 229920000058 polyacrylate Polymers 0.000 description 4
- LEJBBGNFPAFPKQ-UHFFFAOYSA-N 2-(2-prop-2-enoyloxyethoxy)ethyl prop-2-enoate Chemical compound C=CC(=O)OCCOCCOC(=O)C=C LEJBBGNFPAFPKQ-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 3
- 125000000217 alkyl group Chemical group 0.000 description 3
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 3
- AOJOEFVRHOZDFN-UHFFFAOYSA-N benzyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCC1=CC=CC=C1 AOJOEFVRHOZDFN-UHFFFAOYSA-N 0.000 description 3
- 238000009713 electroplating Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 229940116333 ethyl lactate Drugs 0.000 description 3
- 238000000016 photochemical curing Methods 0.000 description 3
- 229920001223 polyethylene glycol Polymers 0.000 description 3
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 3
- 229910052707 ruthenium Inorganic materials 0.000 description 3
- FRASJONUBLZVQX-UHFFFAOYSA-N 1,4-naphthoquinone Chemical compound C1=CC=C2C(=O)C=CC(=O)C2=C1 FRASJONUBLZVQX-UHFFFAOYSA-N 0.000 description 2
- DURPTKYDGMDSBL-UHFFFAOYSA-N 1-butoxybutane Chemical compound CCCCOCCCC DURPTKYDGMDSBL-UHFFFAOYSA-N 0.000 description 2
- JCTXKRPTIMZBJT-UHFFFAOYSA-N 2,2,4-trimethylpentane-1,3-diol Chemical compound CC(C)C(O)C(C)(C)CO JCTXKRPTIMZBJT-UHFFFAOYSA-N 0.000 description 2
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 2
- LCZVSXRMYJUNFX-UHFFFAOYSA-N 2-[2-(2-hydroxypropoxy)propoxy]propan-1-ol Chemical compound CC(O)COC(C)COC(C)CO LCZVSXRMYJUNFX-UHFFFAOYSA-N 0.000 description 2
- WAEVWDZKMBQDEJ-UHFFFAOYSA-N 2-[2-(2-methoxypropoxy)propoxy]propan-1-ol Chemical compound COC(C)COC(C)COC(C)CO WAEVWDZKMBQDEJ-UHFFFAOYSA-N 0.000 description 2
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 2
- KUDUQBURMYMBIJ-UHFFFAOYSA-N 2-prop-2-enoyloxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC(=O)C=C KUDUQBURMYMBIJ-UHFFFAOYSA-N 0.000 description 2
- GGRBZHPJKWFAFZ-UHFFFAOYSA-N 3,4-bis(2-methylprop-2-enoyloxy)butyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCC(OC(=O)C(C)=C)COC(=O)C(C)=C GGRBZHPJKWFAFZ-UHFFFAOYSA-N 0.000 description 2
- 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 2
- FFWSICBKRCICMR-UHFFFAOYSA-N 5-methyl-2-hexanone Chemical compound CC(C)CCC(C)=O FFWSICBKRCICMR-UHFFFAOYSA-N 0.000 description 2
- YYVYAPXYZVYDHN-UHFFFAOYSA-N 9,10-phenanthroquinone Chemical compound C1=CC=C2C(=O)C(=O)C3=CC=CC=C3C2=C1 YYVYAPXYZVYDHN-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229920005692 JONCRYL® Polymers 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 2
- KYPYTERUKNKOLP-UHFFFAOYSA-N Tetrachlorobisphenol A Chemical compound C=1C(Cl)=C(O)C(Cl)=CC=1C(C)(C)C1=CC(Cl)=C(O)C(Cl)=C1 KYPYTERUKNKOLP-UHFFFAOYSA-N 0.000 description 2
- KXKVLQRXCPHEJC-UHFFFAOYSA-N acetic acid trimethyl ester Natural products COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 2
- 125000003342 alkenyl group Chemical group 0.000 description 2
- RDOXTESZEPMUJZ-UHFFFAOYSA-N anisole Chemical compound COC1=CC=CC=C1 RDOXTESZEPMUJZ-UHFFFAOYSA-N 0.000 description 2
- RJGDLRCDCYRQOQ-UHFFFAOYSA-N anthrone Chemical group C1=CC=C2C(=O)C3=CC=CC=C3CC2=C1 RJGDLRCDCYRQOQ-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 150000008366 benzophenones Chemical class 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N butyl acetate Chemical compound CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- SWXVUIWOUIDPGS-UHFFFAOYSA-N diacetone alcohol Chemical compound CC(=O)CC(C)(C)O SWXVUIWOUIDPGS-UHFFFAOYSA-N 0.000 description 2
- 125000005594 diketone group Chemical group 0.000 description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- POLCUAVZOMRGSN-UHFFFAOYSA-N dipropyl ether Chemical compound CCCOCCC POLCUAVZOMRGSN-UHFFFAOYSA-N 0.000 description 2
- GHLKSLMMWAKNBM-UHFFFAOYSA-N dodecane-1,12-diol Chemical compound OCCCCCCCCCCCCO GHLKSLMMWAKNBM-UHFFFAOYSA-N 0.000 description 2
- 150000002170 ethers Chemical class 0.000 description 2
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- 235000011187 glycerol Nutrition 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 239000000852 hydrogen donor Substances 0.000 description 2
- PHTQWCKDNZKARW-UHFFFAOYSA-N isoamylol Chemical compound CC(C)CCO PHTQWCKDNZKARW-UHFFFAOYSA-N 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 150000002734 metacrylic acid derivatives Chemical class 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 2
- 229920005862 polyol Polymers 0.000 description 2
- 150000003077 polyols Chemical class 0.000 description 2
- 229920001451 polypropylene glycol Polymers 0.000 description 2
- 235000013772 propylene glycol Nutrition 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- VDZOOKBUILJEDG-UHFFFAOYSA-M tetrabutylammonium hydroxide Chemical compound [OH-].CCCC[N+](CCCC)(CCCC)CCCC VDZOOKBUILJEDG-UHFFFAOYSA-M 0.000 description 2
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 2
- YRHRIQCWCFGUEQ-UHFFFAOYSA-N thioxanthen-9-one Chemical group C1=CC=C2C(=O)C3=CC=CC=C3SC2=C1 YRHRIQCWCFGUEQ-UHFFFAOYSA-N 0.000 description 2
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 2
- DTGKSKDOIYIVQL-WEDXCCLWSA-N (+)-borneol Chemical compound C1C[C@@]2(C)[C@@H](O)C[C@@H]1C2(C)C DTGKSKDOIYIVQL-WEDXCCLWSA-N 0.000 description 1
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 description 1
- REPVLJRCJUVQFA-UHFFFAOYSA-N (-)-isopinocampheol Natural products C1C(O)C(C)C2C(C)(C)C1C2 REPVLJRCJUVQFA-UHFFFAOYSA-N 0.000 description 1
- XLRFIISUGKSCBF-UHFFFAOYSA-N (1,1-dichloro-2,2-diphenylethyl)benzene Chemical compound ClC(C1=CC=CC=C1)(C(C1=CC=CC=C1)C1=CC=CC=C1)Cl XLRFIISUGKSCBF-UHFFFAOYSA-N 0.000 description 1
- OAKFFVBGTSPYEG-UHFFFAOYSA-N (4-prop-2-enoyloxycyclohexyl) prop-2-enoate Chemical compound C=CC(=O)OC1CCC(OC(=O)C=C)CC1 OAKFFVBGTSPYEG-UHFFFAOYSA-N 0.000 description 1
- 125000006686 (C1-C24) alkyl group Chemical group 0.000 description 1
- DNIAPMSPPWPWGF-GSVOUGTGSA-N (R)-(-)-Propylene glycol Chemical compound C[C@@H](O)CO DNIAPMSPPWPWGF-GSVOUGTGSA-N 0.000 description 1
- HGDULKQRXBSKHL-UHFFFAOYSA-N 1,1-bis(2-methylprop-2-enoyloxy)propyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC(CC)(OC(=O)C(C)=C)OC(=O)C(C)=C HGDULKQRXBSKHL-UHFFFAOYSA-N 0.000 description 1
- ZWVMLYRJXORSEP-UHFFFAOYSA-N 1,2,6-Hexanetriol Chemical compound OCCCCC(O)CO ZWVMLYRJXORSEP-UHFFFAOYSA-N 0.000 description 1
- LZDKZFUFMNSQCJ-UHFFFAOYSA-N 1,2-diethoxyethane Chemical compound CCOCCOCC LZDKZFUFMNSQCJ-UHFFFAOYSA-N 0.000 description 1
- CWABICBDFJMISP-UHFFFAOYSA-N 1,3,5-tris(prop-1-en-2-yl)benzene Chemical compound CC(=C)C1=CC(C(C)=C)=CC(C(C)=C)=C1 CWABICBDFJMISP-UHFFFAOYSA-N 0.000 description 1
- YJTKZCDBKVTVBY-UHFFFAOYSA-N 1,3-Diphenylbenzene Chemical group C1=CC=CC=C1C1=CC=CC(C=2C=CC=CC=2)=C1 YJTKZCDBKVTVBY-UHFFFAOYSA-N 0.000 description 1
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 1
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 1
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- 235000010355 mannitol Nutrition 0.000 description 1
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- GTCCGKPBSJZVRZ-UHFFFAOYSA-N pentane-2,4-diol Chemical compound CC(O)CC(C)O GTCCGKPBSJZVRZ-UHFFFAOYSA-N 0.000 description 1
- 229920001610 polycaprolactone Polymers 0.000 description 1
- 239000004632 polycaprolactone Substances 0.000 description 1
- 229920000166 polytrimethylene carbonate Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- FAIDIRVMPHBRLT-UHFFFAOYSA-N propane-1,2,3-triol;prop-2-enoic acid Chemical compound OC(=O)C=C.OC(=O)C=C.OCC(O)CO FAIDIRVMPHBRLT-UHFFFAOYSA-N 0.000 description 1
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- 150000005846 sugar alcohols Polymers 0.000 description 1
- SJMYWORNLPSJQO-UHFFFAOYSA-N tert-butyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC(C)(C)C SJMYWORNLPSJQO-UHFFFAOYSA-N 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
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- 150000003557 thiazoles Chemical class 0.000 description 1
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Description
本發明揭示一種用於厚膜應用之負性光敏性光阻組合物及製造厚膜負性凸紋影像之方法。自此等組合物及方法製得之凸紋影像可用於形成用於電子內層互連之金屬凸塊及柱。其等亦可用作模板以電化學沈積金屬佈線圖案。已發現此等光製造方法係用於諸如晶片規模封裝、微電子機械系統、高密度互連、液晶裝置、有機電晶體、發光二極體、顯示器等應用中。
通常只有使用厚膜光敏性光阻材料、組合物及方法才可容易實現諸多電子組件之製造。該方法包括使用光敏性光阻組合物塗佈所需基板並乾燥及接著使該光阻透過包含跡線、凸塊孔及其他結構之所需圖案之光罩曝露至光化輻射。在負性光阻的情況下,曝露區域係硬化,而未曝露區域係藉由適宜顯影液(通常為水性)來移除。在諸多光製造方法中,要求經塗佈及乾燥之光阻之厚度係30微米,而該等跡線、凸塊孔及其他結構具有可係至少15微米的尺寸。當製造該等跡線、凸塊孔及其他結構後,通常再次使用水溶液於剝離方法中移除該光阻。
用於厚膜光製造方法中之當前負性光敏性光阻組合物係基於聚-羥基-苯乙烯-共-丙烯酸(PSA)組合物。丙烯酸酯化單體及光敏性自由基引發劑亦可存在於光阻中,其等在曝露至光化輻射時交聯。當使該光阻曝露至光化輻射時,生成自由基,其導致該等丙烯酸酯單體交聯並在PSA聚合物周圍建立聚合網絡。當建立充分交聯網絡時,曝露於
光化輻射的區域將不溶於顯影液中,而未曝露區域係經溶解及移除以於基板上形成凸紋結構圖案。方法包括將金屬(諸如金、銅、鎳、錫及焊料)電鍍沈積至該等結構中。藉由剝離溶液移除曝露光阻會產生所需金屬結構。
當負性光敏性光阻之厚度增加時,使該光阻完全固化係變得更加困難,因此離基板最近的該光阻底部的固化程度比該光阻頂部低,此可導致該光阻之底切及電鍍時之底鍍。改良底部固化之嘗試包括添加具有3個或更多個丙烯酸酯取代基之丙烯酸酯單體及增加自由基引發劑之數量及增加該光阻之光固化時間(一種可使該光阻頂部過度固化的方法)。然而,已知PSA聚合物係會降低光生自由基之有效性(此降低光生自由基使光阻完全固化的能力)的自由基抑制劑。
負性光敏性光阻之自由基抑制之另一限制係表面圓化,其中跡線或孔之頂部之線條銳度或清晰度係被溶解掉且在電鍍時此導致形成橫截面非方形或矩形的線條。另外,自由基抑制將形成非完全均勻的線條並形成波浪形及非直線狀金屬線。非均勻的金屬線、柱及凸塊會導致不一致的電訊號。
另外,自固化不良的負性光敏性光阻獲得的凸紋結構可導致該光阻與電鍍液的不相容性,因為一些有機材料可被萃取至該溶液中,從而導致有限的電鍍浴壽命。
當負性光敏性光阻固化時,通常在於剝離步驟中處理後難以將其移除。通常,使用鹼性水溶液進行剝離。通常,並非所有的光阻皆被移除(尤其在高縱橫比、高密度應用中)且被移除的固化光阻通常係膠狀、固體片,其可再沈積或阻塞線條及造成其他問題。
因此,需要一種快速完全固化、具有非圓形輪廓、與電鍍液相容、無自由基淬滅材料且容易剝離的負性光敏性光阻。
已令人驚訝地發現基於新穎丙烯酸酯聚合物組合物之負性光敏性光阻可用於提供厚膜光阻應用,其具有清晰光阻輪廓、高感光速度、高穿透固化、與電鍍液之高相容性、高縱橫比且可容易剝離。
在第一實施例中,本文揭示並主張一種負性光敏性光阻組合物,其包括至少一種包含下式(1)結構之聚合物:
其中R1至R5獨立地係H、F或CH3,R6係選自由經取代之芳基、未經取代之芳基、經取代之雜芳基及未經取代之雜芳基組成之群,R7係經取代或未經取代之苄基,R8係直鏈或分支鏈C2-C10羥烷基或丙烯酸C2-C10羥烷酯且R9係酸可裂解基,v=10至40莫耳%,w=0至35莫耳%,x=0至60莫耳%,y=10至60莫耳%且z=0至45莫耳%;由光化輻射活化的一或多種自由基引發劑、可進行自由基交聯的一或多種可交聯丙烯酸酯化單體(其中該丙烯酸酯官能度係大於1)及溶劑。
在第二實施例中,本文揭示並主張上述實施例的負性光敏性光阻組合物,其中該組合物可在該等丙烯酸酯單體交聯前溶解於鹼性顯影劑水溶液中。
在第三實施例中,本文揭示並主張上述實施例的負性光敏性光阻組合物,其另外包含至少一種含有苯乙烯及至少一種含酸單體或馬來酸酐之反應產物之聚合物,該酸酐反應產物係另外經醇部分酯化。
在第四實施例中,本文揭示並主張上述實施例的負性光敏性光阻組合物,其另外包含一或多種可進行自由基交聯的可交聯丙烯酸酯
化矽氧烷或丙烯酸酯化倍半矽氧烷基單體,其中該丙烯酸酯官能度係大於1。
在第五實施例中,本文揭示並主張一種形成負性凸紋影像之方法,其包括:藉由將上述實施例之負性光敏性光阻組合物施加至基板上並使其乾燥形成負性光敏性光阻層;使該光敏層成像曝露於光化輻射以形成潛像;及使未曝露區域於顯影劑中顯影,其中該成像曝露光敏層係視需要經熱處理。
在第五實施例中,本文揭示並主張上述實施例之方法,其中該負性光敏性光阻層係在約5微米至100微米之間。
如文中所使用,除非另外指示,否則連詞「及」意欲為包容性且連詞「或」無意為排他性。例如,片語「或,另外」意欲為排他性。
如文中所使用,術語「光固化」及「光聚合」係可互換使用且係指由自由基引發之固化或聚合作用。
如文中所使用,術語「乾燥」係指在乾燥方法後剩餘小於5%溶劑的薄膜。
如文中所使用,術語「厚膜」係指5至100微米厚的薄膜。
本文揭示一種用於厚膜應用之負性光敏性光阻組合物以及製造厚膜負性凸紋影像之方法。該等組合物包含至少一種具有以下通式結構之聚合物:
R1至R5獨立地係甲基、氫或氟。R1至R5可根據該聚合物之所需性質而係相同或不同。該聚合物之一種組分包含自適當丙烯酸單體製得的羧酸,其中R1係甲基、氫原子或氟原子。R6係經取代或未經取代之芳基(如(例如)苯基、甲苯基、二甲苯基、萘基、蒽基、聯苯基、三苯基及經C1-C24烷基或烯基或其他官能基取代之類似物)以及5、6及7員環雜環芳基(例如唑、噻唑、噁唑、吡啶、噠嗪及類似物)。R7係經取代或未經取代之苄基,其可經(例如)C1-C24烷基或烯基或其他官能基取代。R8係直鏈或分支鏈C2-C10羥烷基或丙烯酸C2-C10羥烷酯,如(例如)其中該羥基係鍵接至該鏈中之第二個碳(例如-CH2-CH2-OH、-CH2-CH(OH)-CH3或-CH2-CH(OH)-CH2-CH3)及其中該羥基係鍵接至該鏈中之第三個碳或其他碳。該丙烯酸羥烷酯可係甲基丙烯酸酯化丙烯酸甘油酯、-CH2-CH(OH)-CH2OC(O)C(=CH2)CH3。
該聚合物可另外包含其他共聚單體單元,例如丙烯酸環戊二烯酯及丙烯酸龍腦酯。此等其他單體單元可佔0-30莫耳%。
R9係酸可裂解基,如(例如)第三丁基、四氫哌喃-2-基、四氫呋喃-2-基、4-甲氧基四氫哌喃-4-基、1-乙氧基乙基、1-丁氧基乙基、1-丙氧基乙基、3-側氧基環己基、2-甲基-2-金剛烷基、2-乙基-2-金剛烷基、8-甲基-8-三環[5.2.1.0 2,6]癸基、1,2,7,7-四甲基-2-降莰烷基、2-乙醯氧基基、2-羥甲基、1-甲基-1-環己基乙基、4-甲基-2-側氧基四氫-2H-哌喃-4-基、2,3-二甲基丁-2-基、2,3,3-三甲基丁-2-基、1-甲基環戊基、1-乙基環戊基、1-甲基環己基、1-乙基環己基、1,2,3,3-四甲
基雙環[2.2.1]庚-2-基、2-乙基-1,3,3-三甲基雙環[2.2.1]庚-2-基、2,6,6-三甲基雙環[3.1.1]庚-2-基、2,3-二甲基戊-3-基或3-乙基-2-甲基戊-3-基或在曝露於酸時裂解並留下羧酸基之其他基團。
V係在約10至約40莫耳%之間,w係在約0至約35莫耳%之間,x係在約0至60莫耳%之間,y係在約10至60莫耳%之間,且z係在約0至45莫耳%之間。上述通式無意顯示該聚合物之組成部分之確切位置,因此該等部分可以隨機方式一起存在,另外,2個或更多個相同組成部分可並列存在於該聚合物中。
根據上述實施例,就式(1)而言,v的示例性莫耳百分比範圍可係10至30莫耳%。v的另一示例性莫耳百分比範圍可係15至25莫耳%。w的示例性莫耳百分比範圍可係0至25莫耳%。w的另一示例性莫耳百分比範圍可係0至20莫耳%。x的示例性莫耳百分比範圍可係0至50莫耳%。當存在時,x的另一示例性莫耳百分比範圍可係30至55莫耳%。y的示例性莫耳百分比範圍可係20至45莫耳%。y的另一示例性莫耳百分比範圍可係25至40莫耳%。z的示例性莫耳百分比範圍可係0至35莫耳%。當存在時,z的另一示例性莫耳百分比範圍可係25至40莫耳%。莫耳百分比並非獨立,其等必須總計達100莫耳%。
該等組合物亦可包括一或多種其中自適當丙烯酸單體製得的羧酸(其中R1係甲基、氫原子或氟原子)係經琥珀酸半酯(藉由使馬來酸酐與其他選定單體聚合以產生聚合物且隨後使該酸酐與醇反應以產生羧酸及酯所製得)置換之聚合物。
可藉由任何用於製備聚丙烯酸酯之已知方法製備本發明組合物之聚合物。典型方法係揭示於以下實例中。
本文所揭示之負性光敏性光阻組合物另外包含一或多種由光化輻射活化的自由基引發劑或引發劑系統。可使用單一光引發劑或包含多種組分之光引發劑系統。該光引發劑可係特定類型,例如鹵化-2,5-
環己二烯酮、二苯甲酮、烷芳基酮或二酮類型或其混合物。本發明可使用各種自由基生成光引發劑中之任一者。二苯甲酮衍生物(例如二苯甲酮、雙-4,4'-二甲基胺基二苯甲酮(米氏酮(Michler's ketone))、雙-4,4'-二乙基胺基二苯甲酮(乙基米氏酮)、經其他烷胺基、氯、甲氧基等單或多取代之二苯甲酮)係適宜。另外,經取代之呫噸酮、硫代呫噸酮、蒽酮及茀酮以及經烷基、氯及烷氧基取代之硫代呫噸酮係有用引發劑。亦可使用經取代之環己二烯酮,例如在4位置具有烷基及三氯甲基取代基者。有用的烷芳基酮衍生物包括酮縮醛基醇(例如安息香(benzoin)、匹伐星(pivaloin))及酮醇醚(例如安息香烷基醚、安息香芳基醚、α-烴取代型芳族酮醇)、安息香二烷基縮酮、二苯基乙二酮、安息香酯、O-醯化肟酮及α-胺基酮(例如α-胺基苯乙酮衍生物)。經取代或未經取代之多核醌(例如9,10-蒽醌、1,4-萘醌及菲醌)亦係可用引發劑。適宜作為電子及/或氫供體之三級胺亦可用作引發系統之部分(例如經取代之N,N-二烷胺基苯衍生物及4-(二甲基胺基)苯甲酸乙酯)。可用二酮包括聯乙醯、2,3-二苯甲醯基-2-降冰片烯、苯甲醯基亞苄基二氯、2,2-二溴-2(苯磺醯基)丙二酮、2,3-莰烷二酮、苯丙酮酸及2,4-戊二酮。可使用的代表性醌包括4-苯醌、2-苯醌雙疊氮化物、蒽醌、2-甲基蒽醌、2,6-二甲氧基蒽醌、2,4,8-三氯蒽醌、胺基蒽醌、1,4-萘醌衍生物及菲醌。與鏈轉移劑或氫供體組合的2,4,5-三苯基咪唑基二聚物亦可用作光引發劑。
本文所揭示之負性光敏性光阻組合物另外包含一或多種可進行自由基交聯的可交聯丙烯酸酯化單體,其中丙烯酸酯官能度係大於1。適宜單體包括1,4-丁二醇二丙烯酸酯、1,5-戊二醇二丙烯酸酯、二乙二醇二丙烯酸酯、己二醇二丙烯酸酯、1,3-丙二醇二丙烯酸酯、癸二醇二丙烯酸酯、癸二醇二甲基丙烯酸酯、1,4-環己二醇二丙烯酸酯、2,2-二羥甲基丙烷二丙烯酸酯、甘油二丙烯酸酯、甘油三丙烯酸
酯、三羥甲基丙烷三丙烯酸酯、異戊四醇三丙烯酸酯、聚氧乙基化三羥甲基丙烷三(甲基)丙烯酸酯、聚丙氧基化三羥甲基丙烷三(甲基)丙烯酸酯及類似化合物、2,2-二(對羥苯基)丙烷二丙烯酸酯、異戊四醇四丙烯酸酯、2,2-二(對羥苯基)丙烷二甲基丙烯酸酯、三乙二醇二丙烯酸酯、聚氧乙基-2,2-二(對羥苯基)丙烷二甲基丙烯酸酯、雙酚A二丙烯酸酯、雙酚A之二-(3-甲基丙烯醯氧基-2-羥丙基)醚、雙酚A之二-2-甲基丙烯醯氧基乙基醚、雙酚A之二-(3-丙烯醯氧基-2-羥丙基)醚、雙酚A之二-2-丙烯醯氧基乙基醚、四氯雙酚A之二-(3-甲基丙烯醯氧基-2-羥丙基)醚、四氯雙酚A之二-2-甲基丙烯醯氧基乙基醚、四溴雙酚A之二-(3-甲基丙烯醯氧基-2-羥丙基)醚、四溴雙酚A之二-2-甲基丙烯醯氧基乙基醚、1,4-丁二醇之二-(3-甲基丙烯醯氧基-2-羥丙基)醚、三乙二醇二甲基丙烯酸酯、三羥甲基丙烷三甲基丙烯酸酯、乙二醇二甲基丙烯酸酯、丁二醇二甲基丙烯酸酯、1,3-丙二醇二甲基丙烯酸酯、1,2,4-丁三醇三甲基丙烯酸酯、2,2,4-三甲基-1,3-戊二醇二甲基丙烯酸酯、1,2,4-丁三醇三甲基丙烯酸酯、2,2,4-三甲基-1,3-戊二醇1,5-二甲基丙烯酸酯、異戊四醇三甲基丙烯酸酯、1-苯伸乙基-1,2-二甲基丙烯酸酯、異戊四醇四甲基丙烯酸酯、1,5-戊二醇二甲基丙烯酸酯、1,4-苯二酚二甲基丙烯酸酯、1,3,5-三異丙烯基苯及聚己內酯二丙烯酸酯。
用於本發明之溶劑係選自由C1-C4醇、C4-C8醚、C3-C6酮、C3-C6酯及其混合物組成之群。C1-C4醇之實例包括甲醇、乙醇、1-丙醇及2-丙醇。C4-C8醚之實例包括乙醚、丙醚、丁醚及四氫呋喃。C3-C6酮之實例包括丙酮、甲基乙基酮及環己酮。C3-C6酯之實例包括乙酸甲酯、乙酸乙酯及乙酸正丁酯。
適宜有機溶劑之實例包括酮(例如丙酮、甲基乙基酮、環己酮、甲基異戊基酮、甲基戊基酮及類似物)、多元醇及其衍生物(例如乙二
醇、乙二醇單乙酸酯、二乙二醇、二乙二醇單乙酸酯、丙二醇、丙二醇單乙酸酯、二丙二醇或二丙二醇單乙酸酯及類似物之單甲醚、單乙醚、單丙醚、單丁醚及單苯醚)、環醚(例如二噁烷、四氫呋喃及類似物)、酯(例如乳酸甲酯、乳酸乙酯、乙酸甲酯、乙酸乙酯、乙酸丁酯及類似物)及具有芳族基的溶劑(例如苯甲醚、乙基苯、二甲苯、氯苯、甲苯及類似物)。實例係丙二醇單甲醚乙酸酯、丙二醇單甲醚及乳酸乙酯。
可使用具有一或多個極性官能基(如羥基、醚、醯胺、酯、酮及碳酸酯,例如可係相同或不同的兩個官能基(例如兩個羥基或1個羥基及1個醚基))的溶劑,包括(例如)多元醇、二醇醚、二丙酮醇、2-吡咯啶酮、N-甲基吡咯啶酮、乳酸乙酯、碳酸伸丙酯、1,3-二甲基-2-咪唑啶二酮及烷基酯及其任何組合。
例如,可使用諸如以下之多元醇:聚乙二醇、聚丙二醇、聚(乙二醇-共-丙二醇)、聚乙烯醇、三羥甲基丙烷、乙二醇、甘油、二乙二醇、三乙二醇、三丙二醇、四乙二醇、五乙二醇、1,2-丙二醇、1,3-丙二醇、丁二醇、三乙二醇、1,2,6-己三醇、硫二甘醇、己二醇、雙-2-羥乙醚、1,4-丁二醇、1,2-丁烯二醇、1,4-丁烯二醇、1,3-丁烯二醇、1,5-戊二醇、2,4-戊二醇、2,4-庚二醇、1,8-辛二醇、1,10-癸二醇、1,12-十二烷二醇、1,4-環己二醇、1,4-環己烷二甲醇、1,2-雙(羥甲基)環己烷、1,2-雙(羥乙基)-環己烷、3-甲基-1,5-戊二醇、2,2,4-三甲基-1,3-戊二醇、新戊二醇、異戊四醇、山梨醇、甘露醇及其任何組合,包括聚乙二醇、三羥甲基丙烷、乙二醇、甘油、二乙二醇、三丙二醇及其任何組合。
例如,可使用二醇醚,例如:乙二醇單甲醚、乙二醇單乙醚、丙二醇單甲醚、三丙二醇單甲醚、乙二醇單丁醚、二乙二醇單甲醚、二乙二醇單乙醚、丙二醇正丙醚、丙二醇第三丁醚、丙二醇正丁醚、
二丙二醇甲醚、二丙二醇正丙醚、二丙二醇第三丁醚、二丙二醇正丁醚、三丙二醇正丙醚、三丙二醇第三丁醚、三丙二醇正丁醚、乙基溶纖劑、甲基溶纖劑、聚乙二醇單甲醚、聚丙二醇單甲醚、甲氧基三甘醇、乙氧基三甘醇、丁氧基三甘醇、1-丁氧基乙氧基-2-丙醇及其任何組合,包括乙二醇單甲醚、乙二醇單乙醚、丙二醇單甲醚、三丙二醇單甲醚、乙二醇單丁醚、二乙二醇單甲醚、二乙二醇單乙醚及其任何組合。
此等有機溶劑可視需要單獨或以混合物方式使用。
本發明之所需聚合物及自其製得的組合物可在光固化之前溶解於適宜顯影劑中。典型顯影劑包括鹼性顯影劑水溶液,其包括氫氧化物(例如氫氧化四(C1-C4烷基)銨、氫氧化膽鹼、氫氧化鋰、氫氧化鈉或氫氧化鉀)、碳酸鹽、碳酸氫鹽、胺及其他鹼性材料。在一些情況下及一些應用中,可使用工業中熟知的溶劑顯影劑。
本發明所揭示之組合物可另外包含因其特定性質而可用的聚合物。例如,可添加高酸值聚合物以助於顯影階段及剝離階段,例如苯乙烯-共-馬來酸酐半酯,其中該酯基可賦予該組合物某些性質。
亦可使用可與光生自由基反應的矽基材料。此等材料包括(例如)倍半矽氧烷完全或部分籠型材料及梯型材料,其等可被包含以賦予該組合物及最終凸紋影像改良之韌性、熱安定性及其他所需性質。可使丙烯酸酯基、甲基丙烯酸酯基及乙烯基鍵接至該矽材料以賦予可固化性。一個實例係八-丙烯醯-倍半矽氧烷型材料。
本申請案另外揭示一種形成負性凸紋影像的方法。將本揭示內容之組合物塗佈至所選基板上並使其乾燥。隨後使用光化輻射(其輸出包含適於生成自由基的波長)透過負性遮罩使由此所形成的薄膜成像曝光。曝露於該輻射的圖案係固化或硬化。接著將顯影劑施加至該薄膜上,且未曝露至輻射的區域係經溶解且自該基板移除。
可藉由諸多塗佈方法(如(例如)旋塗、狹縫塗佈、浸塗、幕塗、輥塗、線塗或其他已知方法)中之一者完成塗佈。乾燥由此施加的塗層以將其溶劑減少至低於5%溶劑。藉由熱板加熱、對流、紅外線或用於自塗層薄膜移除溶劑之其他已知方法進行乾燥。在諸多厚膜應用中,需要在大於300nm之波長(例如365nm、405nm、436nm及寬帶)下低於1000mW的成像曝光能量。曝光後,將適當顯影劑施用於該薄膜,例如0.25N氫氧化四丁基銨。可藉由旋塗、浸漬、噴霧或浸泡來施加該顯影劑且其可係約室溫或可根據未曝露及曝露的光阻在該顯影劑中之溶解度經加熱。厚膜光阻之典型應用需要3/1縱橫比,其中30至60微米厚度的光阻產生15至70微米寬的孔及溝槽。
在移除該等未曝露區域後,該薄膜中已建立圖案,且基板表面現可進行另外處理,如(例如)將金屬電鍍至凸紋區域中,以產生金屬線、凸塊、溝槽及其他結構。現已曝露的基板表面可經歷材料蝕刻。在蝕刻、電鍍或其他處理後,除在彼等其中負性光阻係設計成永久材料(例如永久介電質)的情況下以外,移除或剝離該負性光阻。電鍍及蝕刻方法皆係此項技術中所熟知。剝離溶液通常係強鹼性溶液且通常係加熱至大於100℉。通常,使該光阻適當固化以使得該光阻不溶於剝離溶液,而係膨脹並以凝膠形式被移除。
用於厚膜應用且通常包含聚對羥基苯乙烯的當前可用材料在光阻於顯影或其他處理期間自基板表面起離的情況下會遭受底切。此可係由於小於該光阻對基板之理想黏著力且亦可係由於其中在光阻-基板界面處的固化量無法使該光阻完全固化的不良「穿透固化」。另外,當前可用材料亦會產生波形側壁及圓形頂部。此等條件均會導致電鍍凸塊或跡線且線條係干擾訊號傳播的波浪形。該等光阻結構的圓形頂部允許金屬於電鍍方法期間「過電鍍」並產生頂部比底部寬的線條及凸塊,此亦會干擾訊號傳播。
已令人驚訝地發現本揭示內容之組合物及方法可經塗佈、乾燥、成像曝露以產生具有光滑側壁、方形頂部且無底切或鼓起的厚膜凸紋影像。不受理論約束,據信該等聚對羥基苯乙烯材料具有自由基抑制劑作用,因此使單體交聯所需之自由基減少並導致不完全固化。
就所有目的而言,上文提及的各文獻係以全文引用之方式併入本文中。以下具體實例將詳細闡述製造及利用本發明組合物之方法。然而,此等實例無意以任何方式限制本發明之範圍且不應被理解為提供必需完全使用以實踐本發明的條件、參數或數值。
實例
聚合物實例1:
結構:
將7.21g丙烯酸、6.51g丙烯酸甲氧基乙酯、44.05g甲基丙烯酸苄酯、14.42g甲基丙烯酸羥丙酯混合於295.3g丙二醇單甲醚(PGME)溶劑中。於80℃及氮氣下,於1.64g AIBN的存在下,使聚合反應進行18小時。冷卻至室溫後,使該反應混合物沉澱於去離子(DI)水中。沖洗白色聚合物固體並於50℃真空下乾燥,產量為66.68g(90.3%產率),且重量平均分子量為19109。
聚合物實例2:
結構:
將5.40g丙烯酸、39.65g甲基丙烯酸羥丙酯、21.33g甲基丙烯酸
第三丁酯混合於126.3g PGME溶劑中。於90℃及氮氣下,於1.64g AIBN的存在下,使聚合反應進行18小時。冷卻至室溫後,使該反應混合物沉澱於DI水中。沖洗白色聚合物固體並於50℃真空下乾燥,產量為64.58g(97%產率),且重量平均分子量為18,734。
聚合物實例3:
結構:
將5.40g丙烯酸、10.42g苯乙烯、21.62g甲基丙烯酸羥丙酯、24.89g甲基丙烯酸第三丁酯混合於118.7g PGME溶劑中。於90℃及氮氣下,於1.64g AIBN的存在下,使聚合反應進行18小時。冷卻至室溫後,使該反應混合物沉澱於DI水中。沖洗白色聚合物固體並於50℃真空下乾燥,產量為63.0g(99%產率),且重量平均分子量為14,503。
聚合物實例4:
結構:
將9.01g丙烯酸、5.28g苯乙烯、21.62g甲基丙烯酸羥丙酯、24.89g甲基丙烯酸第三丁酯混合於115.8g PGME溶劑中。於80℃及氮氣下,於1.64g AIBN的存在下,使聚合反應進行18小時。冷卻至室溫後,使該反應混合物沉澱於DI水中。沖洗白色聚合物固體並於50℃真空下乾燥,產量為59.67g(98%產率),且重量平均分子量為21,457。
聚合物實例5:
結構:
將7.20g丙烯酸、7.81g苯乙烯、21.62g甲基丙烯酸羥丙酯、24.89g甲基丙烯酸第三丁酯混合於117.3g PGME溶劑中。於90℃及氮氣下,於1.64g AIBN的存在下,使聚合反應進行18小時。冷卻至室溫後,使該反應混合物沉澱於DI水中。沖洗白色聚合物固體並於50℃真空下乾燥,產量為60.80g(99%產率),且重量平均分子量為15,542。
聚合物實例6:
結構:
將6.49g丙烯酸、8.85g苯乙烯、21.62g甲基丙烯酸羥丙酯、24.89g甲基丙烯酸第三丁酯混合於117.9g PGME溶劑中。於90℃及氮氣下,於1.64g AIBN的存在下,使聚合反應進行18小時。冷卻至室溫後,使該反應混合物沉澱於DI水中。沖洗白色聚合物固體並於50℃真空下乾燥,產量為61.0g(98%產率),且重量平均分子量為15,496。
聚合物實例7:
結構:
將5.76g丙烯酸、9.37g苯乙烯、23.79g甲基丙烯酸羥丙酯、
23.46g甲基丙烯酸第三丁酯混合於118.9g PGME溶劑中。於90℃及氮氣下,於1.64g AIBN的存在下,使聚合反應進行18小時。冷卻至室溫後,使該反應混合物沉澱於DI水中。沖洗白色聚合物固體並於50℃真空下乾燥,產量為61.5g(99%產率),且重量平均分子量為15,882。
聚合物實例8:
結構:
將14.41g丙烯酸、20.83g苯乙烯、43.25g甲基丙烯酸羥丙酯、30.04g甲基丙烯酸甲酯混合於124.7g PGME溶劑中。於90℃及氮氣下,於3.28g AIBN的存在下,使聚合反應進行18小時。冷卻至室溫後,使該反應混合物沉澱於DI水中。沖洗白色聚合物固體並於50℃真空下乾燥,產量為105.9g(98%產率),且重量平均分子量為14,327。
聚合物實例9:
結構:
將7.21g丙烯酸、21.62g甲基丙烯酸羥丙酯、44.05g甲基丙烯酸苄酯混合於138.4g PGME溶劑中。於90℃及氮氣下,於1.6g AIBN的存在下,使聚合反應進行18小時。冷卻至室溫後,使該反應混合物沉澱於DI水中。沖洗白色聚合物固體並於50℃真空下乾燥,產量為71.4g(98%產率),且重量平均分子量為15,929。
聚合物實例10:
結構:
將9.01g丙烯酸、5.21g苯乙烯、21.62g甲基丙烯酸羥丙酯、30.84g甲基丙烯酸苄酯混合於126.9g PGME溶劑中。於90℃及氮氣下,於1.64g AIBN的存在下,使聚合反應進行18小時。冷卻至室溫後,使該反應混合物沉澱於DI水中。沖洗白色聚合物固體並於50℃真空下乾燥,產量為64.9g(97%產率),且重量平均分子量為15,314。
組合物實例:
除上述聚合物實例以外,用於製造文中所述之各種調配物的共聚物/四聚物及組分名稱係揭示於表1中。使用側鏈中具有甲基丙烯酸酯基的兩種丙烯酸系四聚物(黏合劑-1及黏合劑-2,獲自Miwon Commercial Co.,Ltd)替代上述聚合物實例以增加曝露光阻中之交聯密度。使用Joncryl 817、819及821聚合物(獲自S.C.Johnson,Inc的聚丙烯酸酯聚合物)及聚GK(獲自DuPont的羥基苯乙烯/甲基丙烯酸第三丁酯=65/35的共聚物)樹脂以調整顯影速度。使用雙官能、三官能、四官能及五官能甲基丙烯酸酯及丙烯酸酯中之一或多者以調整交聯密度。使用光引發劑及抑制劑中之一或多者以調整感光速度。
組合物實例1:
將36.06g自上述聚合物實例6製得的聚合物與22.10g丙二醇單甲醚乙酸酯、14.43g SR268及21.64g DHDMA混合。在搖晃過夜後,混合3.61g Irgacure®907及1.80g Irgacure® 819。混合0.01g Megafac®
R08及0.26g Lignostab® 1198抑制劑並將該混合物搖晃2天。過濾該組合物並旋塗於矽晶圓上並於熱板上在140℃下乾燥5分鐘。測得該乾燥塗層係40微米厚。使該光阻塗層曝露在600mJ/cm2下。於旋轉塗佈機上使用0.26N氫氧化四甲基銨使該曝光塗層顯影。所得負性凸紋具有光滑側壁、方形頂部且無底切跡象。
組合物實例2:
使用自上述聚合物實例5製得的聚合物重複組合物實例1。按照組合物實例1重複該製程且除顯影更快以外具有類似結果。
組合物實例3及4:
分別使用自上述聚合物實例3及聚合物實例4製得的聚合物重複組合物實例1。重複組合物實例1之製程並建立顯影塗層。包含聚合物實例3的組合物比聚合物實例4具有更長的用於形成圖案的顯影時間。
組合物實例5:
將33.90g自上述聚合物實例5製得的聚合物與29.25g丙二醇單甲醚乙酸酯、6.78g SR268、20.34g DHDMA及6.78g SR-454混合。在搖晃過夜後,混合1.70g Irgacure® 907及0.85g Irgacure® 819。混合0.24g Megafac R08及0.17g Lignostab 1198抑制劑並將該混合物搖晃2天。過濾該組合物並旋塗於矽晶圓上並於熱板上於140℃下乾燥6分鐘。測得該乾燥塗層係50微米厚。使該光阻塗層曝露在600mJ/cm2下。於旋轉塗佈機上使用0.26N氫氧四甲基化銨使該曝光塗層顯影。所得負性凸紋具有光滑側壁、方形頂部且無底切跡象。
組合物實例6、7、8、9、10及11:
分別使用其他三官能、四官能及五官能甲基丙烯酸酯及丙烯酸酯:SR-492、SR-9020、SR-499、CD-501、SR-295及SR-399重複組合物實例5。重複組合物實例5之製程並建立緩慢或快速顯影的塗層。所得負性凸紋具有光滑側壁、方形頂部且無底切跡象。
在上述一些實例中,添加酸值大於50的丙烯酸酯聚合物及聚GK以調整顯影速度,包括(例如)Joncryl 821(酸值為約70)。
組合物實例12:
將33.81g自上述聚合物實例5製得的聚合物與29.17g丙二醇單甲醚乙酸酯、13.5g SR268、20.28g DHDMA混合。在搖晃過夜後,混合1.69g Irgacure® 907、0.85g Irgacure® 819及0.34g ITX。混合0.24g Megafac R08及0.10g Lignostab 1198抑制劑並將該混合物搖晃2天。過濾該組合物並旋塗於矽晶圓上並於熱板上於140℃下乾燥6分鐘。測得該乾燥塗層係50微米厚。使該光阻塗層曝露在1000mJ/cm2下。於旋轉塗佈機上使用0.26N氫氧化四甲基銨使該曝光塗層顯影。所得負性凸紋具有光滑側壁、方形頂部且接觸孔中留有殘餘物。
組合物實例13:
將32.37g自上述聚合物實例5製得的聚合物與32.37g丙二醇單甲醚乙酸酯、3.24g SR268、19.42g DHDMA及9.71g SR-399混合。在搖晃過夜後,混合1.62g Irgacure® 907、0.81g Irgacure® 819及0.17g CGI 242。混合0.23g Megafac R08及0.08g Lignostab 1198抑制劑並將該混合物搖晃2天。過濾該組合物並旋塗於矽晶圓上並於熱板上於140℃下乾燥6分鐘。測得該乾燥塗層係50微米厚。使該光阻塗層曝露在400mJ/cm2下。於旋轉塗佈機上使用0.26N氫氧化四甲基銨使該曝光塗層顯影。所得負性凸紋具有光滑側壁、方形頂部且無底切跡象。
組合物實例14:
將31.57g黏合劑-1與33.81g丙二醇單甲醚乙酸酯、19.94g DHDMA及7.89g SR-399混合。搖晃過夜後,混合1.58g Irgacure® 907、1.10g Irgacure® 819及0.05g CGI 242。混合0.22g Megafac R08及0.09g Lignostab 1198抑制劑並將該混合物搖晃2天。過濾該組合物並旋塗於矽晶圓上並於熱板上於140℃下乾燥6分鐘。測得該乾燥塗層
係50微米厚。使該光阻塗層曝露在200mJ/cm2下。於旋轉塗佈機上使用0.26N氫氧化四甲基銨使該曝光塗層顯影。所得負性凸紋具有光滑側壁,接觸孔中無殘餘物且無底切跡象。
組合物實例15:
使用黏合劑-2聚合物代替黏合劑-1聚合物以重複組合物實例14。重複組合物實例14的製程並建立緩慢顯影的塗層。所得負性凸紋具有光滑側壁,接觸孔中留有殘餘物且無底切跡象。
Claims (11)
- 一種負性光敏性光阻組合物,其包含:a)至少一種包含下式結構之聚合物:
其中R1至R5獨立地係H、F或CH3,R6係選自由經取代之芳基、未經取代之芳基、經取代之雜芳基及未經取代之雜芳基組成之群,R7係經取代或未經取代之苄基,R8係直鏈或分支鏈C2-C10羥烷基或丙烯酸C2-C10羥烷酯且R9係酸可裂解基,v=10至40莫耳%,w=0至35莫耳%,x=0至60莫耳%,y=10至60莫耳%,及z存在且範圍至高達45莫耳%;b)由光化輻射活化的一或多種自由基引發劑;c)可進行自由基交聯的一或多種可交聯丙烯酸酯化單體,其中該丙烯酸酯官能度係大於1;及d)溶劑。 - 如請求項1之負性光敏性光阻組合物,其中R9係選自以下的酸可裂解基:第三丁基、四氫哌喃-2-基、四氫呋喃-2-基、4-甲氧基四氫哌喃-4-基、1-乙氧基乙基、1-丁氧基乙基、1-丙氧基乙基、3-側氧基環己基、2-甲基-2-金剛烷基、2-乙基-2-金剛烷基、8-甲基-8-三環[5.2.1.0 2,6]癸基、1,2,7,7-四甲基-2-降莰烷基、2-乙醯氧基基、2-羥甲基、1-甲基-1-環己基乙基、4-甲基-2-側氧基四氫-2H-哌喃-4-基、2,3-二甲基丁-2-基、2,3,3-三甲基丁-2-基、1-甲基環戊基、1-乙基環戊基、1-甲基環己基、1-乙基環己基、 1,2,3,3-四甲基雙環[2.2.1]庚-2-基、2-乙基-1,3,3-三甲基雙環[2.2.1]庚-2-基、2,6,6-三甲基雙環[3.1.1]庚-2-基、2,3-二甲基戊-3-基或3-乙基-2-甲基戊-3-基。
- 如請求項1之負性光敏性光阻組合物,其中該組合物可在該等丙烯酸酯單體交聯前溶解於鹼性顯影劑水溶液中。
- 如請求項1之負性光敏性光阻組合物,其另外包含至少一種含有至少一種含酸單體與視需要之苯乙烯之反應產物或馬來酸酐與苯乙烯之反應產物之聚合物,該酸酐反應產物係另外經醇部分酯化。
- 如請求項1之負性光敏性光阻組合物,其中R6係苯基且R8係2-羥乙基、2-羥丙基、2-羥丁基或2-羥戊基。
- 如請求項1之負性光敏性光阻組合物,其另外包含一或多種可進行自由基交聯的可交聯丙烯酸酯化矽氧烷或丙烯酸酯化倍半矽氧烷基單體,其中該丙烯酸酯官能度係大於1。
- 一種形成負性凸紋影像之方法,其包括:a)藉由將如請求項1至6中任一項之負性光敏性光阻組合物施加至基板上並使其乾燥來形成負性光敏層;b)使該光敏層成像曝露於光化輻射以形成潛像;及c)使未曝露區域於顯影劑中顯影,其中該成像曝露光敏層係視需要經熱處理。
- 如請求項7之方法,其中該負性光敏性光阻層具有約5微米至約100微米之間的乾燥薄膜厚度。
- 如請求項7或8之方法,其中該光化輻射具有大於300nm的波長。
- 一種負性光敏性光阻組合物,其包含: a)至少一種包含下式結構之聚合物:
其中R1至R5獨立地係H、F或CH3,R6係選自由經取代之芳基、未經取代之芳基、經取代之雜芳基及未經取代之雜芳基組成之群,R7係經取代或未經取代之苄基,R8係直鏈或分支鏈C2-C10羥烷基或丙烯酸C2-C10羥烷酯且R9係酸可裂解基,v=10至40莫耳%,w=0至35莫耳%,x=0至60莫耳%,y=10至60莫耳%,且z=0至45莫耳%;b)由光化輻射活化的一或多種自由基引發劑;c)可進行自由基交聯的一或多種可交聯丙烯酸酯化單體,其中該丙烯酸酯官能度係大於1;d)溶劑;及至少一種含有至少一種含酸單體與視需要之苯乙烯之反應產物或馬來酸酐與苯乙烯之反應產物之聚合物,該酸酐反應產物係另外經醇部分酯化。 - 如請求項10之負性光敏性光阻組合物,其中R9係選自以下的酸可裂解基:第三丁基、四氫哌喃-2-基、四氫呋喃-2-基、4-甲氧基四氫哌喃-4-基、1-乙氧基乙基、1-丁氧基乙基、1-丙氧基乙基、3-側氧基環己基、2-甲基-2-金剛烷基、2-乙基-2-金剛烷基、8-甲基-8-三環[5.2.1.0 2,6]癸基、1,2,7,7-四甲基-2-降莰烷基、2-乙醯氧基基、2-羥甲基、1-甲基-1-環己基乙基、4-甲基-2-側氧基四氫-2H-哌喃-4-基、2,3-二甲基丁-2-基、2,3,3-三甲基丁-2-基、1-甲基環戊基、1-乙基環戊基、1-甲基環己基、1-乙基環己基、 1,2,3,3-四甲基雙環[2.2.1]庚-2-基、2-乙基-1,3,3-三甲基雙環[2.2.1]庚-2-基、2,6,6-三甲基雙環[3.1.1]庚-2-基、2,3-二甲基戊-3-基或3-乙基-2-甲基戊-3-基。
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| EP2861638A1 (en) | 2015-04-22 |
| JP2015521752A (ja) | 2015-07-30 |
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| CN104364279B (zh) | 2017-05-10 |
| WO2013185990A1 (en) | 2013-12-19 |
| KR20190029773A (ko) | 2019-03-20 |
| SG11201407048RA (en) | 2014-11-27 |
| JP6579952B2 (ja) | 2019-09-25 |
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