WO2009081884A1 - エッチング剤、エッチング方法及びエッチング剤調製液 - Google Patents
エッチング剤、エッチング方法及びエッチング剤調製液 Download PDFInfo
- Publication number
- WO2009081884A1 WO2009081884A1 PCT/JP2008/073246 JP2008073246W WO2009081884A1 WO 2009081884 A1 WO2009081884 A1 WO 2009081884A1 JP 2008073246 W JP2008073246 W JP 2008073246W WO 2009081884 A1 WO2009081884 A1 WO 2009081884A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- etching
- weight
- etching agent
- hydrogen peroxide
- agent
- Prior art date
Links
- 238000005530 etching Methods 0.000 title claims abstract description 387
- 238000000034 method Methods 0.000 title claims description 48
- 239000007788 liquid Substances 0.000 title claims description 23
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 251
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 202
- 229910052751 metal Inorganic materials 0.000 claims abstract description 193
- 239000002184 metal Substances 0.000 claims abstract description 193
- 239000000758 substrate Substances 0.000 claims abstract description 102
- 239000010949 copper Substances 0.000 claims abstract description 97
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 claims abstract description 96
- 239000002738 chelating agent Substances 0.000 claims abstract description 94
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 85
- 239000004065 semiconductor Substances 0.000 claims abstract description 84
- 239000010936 titanium Substances 0.000 claims abstract description 80
- 229910052802 copper Inorganic materials 0.000 claims abstract description 65
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 64
- 150000007514 bases Chemical class 0.000 claims abstract description 45
- 230000001590 oxidative effect Effects 0.000 claims abstract description 42
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 37
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 34
- 239000010937 tungsten Substances 0.000 claims abstract description 34
- 150000001450 anions Chemical class 0.000 claims abstract description 26
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 125000000129 anionic group Chemical group 0.000 claims description 80
- -1 benzotriazole compound Chemical class 0.000 claims description 65
- 239000003513 alkali Substances 0.000 claims description 53
- 238000002360 preparation method Methods 0.000 claims description 47
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 claims description 46
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 40
- 229910045601 alloy Inorganic materials 0.000 claims description 38
- 239000000956 alloy Substances 0.000 claims description 38
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 33
- 239000010931 gold Substances 0.000 claims description 24
- 150000001412 amines Chemical class 0.000 claims description 20
- 239000000203 mixture Substances 0.000 claims description 19
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 18
- 229910052737 gold Inorganic materials 0.000 claims description 18
- 150000007524 organic acids Chemical class 0.000 claims description 17
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 14
- 150000007522 mineralic acids Chemical class 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 14
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 13
- 150000001875 compounds Chemical class 0.000 claims description 13
- 229920002647 polyamide Polymers 0.000 claims description 13
- 239000004952 Polyamide Substances 0.000 claims description 12
- 229910000679 solder Inorganic materials 0.000 claims description 12
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 11
- 239000012964 benzotriazole Substances 0.000 claims description 10
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 9
- 229910052709 silver Inorganic materials 0.000 claims description 9
- 239000004332 silver Substances 0.000 claims description 9
- 239000011135 tin Substances 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 8
- 229940049920 malate Drugs 0.000 claims description 8
- 150000008044 alkali metal hydroxides Chemical class 0.000 claims description 7
- 229910021529 ammonia Inorganic materials 0.000 claims description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical group OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 6
- BJEPYKJPYRNKOW-UWTATZPHSA-M malate ion Chemical compound [O-]C(=O)[C@H](O)CC(O)=O BJEPYKJPYRNKOW-UWTATZPHSA-M 0.000 claims description 6
- 229910052718 tin Inorganic materials 0.000 claims description 6
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 5
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 5
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 claims description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 5
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- 229940085991 phosphate ion Drugs 0.000 claims description 5
- GQZXNSPRSGFJLY-UHFFFAOYSA-N hydroxyphosphanone Chemical compound OP=O GQZXNSPRSGFJLY-UHFFFAOYSA-N 0.000 claims description 4
- 229940005631 hypophosphite ion Drugs 0.000 claims description 4
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical compound [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 claims description 4
- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 claims description 4
- XHAZMZWXAOBLQG-UHFFFAOYSA-N (1-hydroxy-1-phosphonopropyl)phosphonic acid Chemical compound CCC(O)(P(O)(O)=O)P(O)(O)=O XHAZMZWXAOBLQG-UHFFFAOYSA-N 0.000 claims description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 3
- 235000005985 organic acids Nutrition 0.000 claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 76
- 230000007797 corrosion Effects 0.000 description 50
- 238000005260 corrosion Methods 0.000 description 50
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 36
- 239000007864 aqueous solution Substances 0.000 description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 238000000354 decomposition reaction Methods 0.000 description 14
- 150000002739 metals Chemical class 0.000 description 14
- 230000000694 effects Effects 0.000 description 13
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 12
- 229910052938 sodium sulfate Inorganic materials 0.000 description 12
- 235000011152 sodium sulphate Nutrition 0.000 description 12
- 125000004432 carbon atom Chemical group C* 0.000 description 11
- 125000002947 alkylene group Chemical group 0.000 description 10
- 239000006172 buffering agent Substances 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 description 8
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 description 8
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 8
- 239000001630 malic acid Substances 0.000 description 8
- 235000011090 malic acid Nutrition 0.000 description 8
- 239000004094 surface-active agent Substances 0.000 description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 7
- 238000004090 dissolution Methods 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000010953 base metal Substances 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 5
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 5
- 235000002639 sodium chloride Nutrition 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 4
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 description 4
- 229910000397 disodium phosphate Inorganic materials 0.000 description 4
- 235000019800 disodium phosphate Nutrition 0.000 description 4
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 4
- 239000003002 pH adjusting agent Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 229910020888 Sn-Cu Inorganic materials 0.000 description 3
- 229910019204 Sn—Cu Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 125000001309 chloro group Chemical group Cl* 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- 125000005843 halogen group Chemical group 0.000 description 3
- ROBFUDYVXSDBQM-UHFFFAOYSA-N hydroxymalonic acid Chemical compound OC(=O)C(O)C(O)=O ROBFUDYVXSDBQM-UHFFFAOYSA-N 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 229910001415 sodium ion Inorganic materials 0.000 description 3
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 3
- 125000003258 trimethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])[*:1] 0.000 description 3
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical group [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 2
- KDCGOANMDULRCW-UHFFFAOYSA-N 7H-purine Chemical compound N1=CNC2=NC=NC2=C1 KDCGOANMDULRCW-UHFFFAOYSA-N 0.000 description 2
- 229930024421 Adenine Natural products 0.000 description 2
- GFFGJBXGBJISGV-UHFFFAOYSA-N Adenine Chemical compound NC1=NC=NC2=C1N=CN2 GFFGJBXGBJISGV-UHFFFAOYSA-N 0.000 description 2
- 229910016334 Bi—In Inorganic materials 0.000 description 2
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical group [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- 229910017770 Cu—Ag Inorganic materials 0.000 description 2
- KJTLQQUUPVSXIM-UHFFFAOYSA-N DL-mevalonic acid Natural products OCCC(O)(C)CC(O)=O KJTLQQUUPVSXIM-UHFFFAOYSA-N 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
- NYHBQMYGNKIUIF-UUOKFMHZSA-N Guanosine Chemical compound C1=NC=2C(=O)NC(N)=NC=2N1[C@@H]1O[C@H](CO)[C@@H](O)[C@H]1O NYHBQMYGNKIUIF-UUOKFMHZSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910001128 Sn alloy Inorganic materials 0.000 description 2
- 229910020836 Sn-Ag Inorganic materials 0.000 description 2
- 229910020988 Sn—Ag Inorganic materials 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 2
- ISAKRJDGNUQOIC-UHFFFAOYSA-N Uracil Chemical compound O=C1C=CNC(=O)N1 ISAKRJDGNUQOIC-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 229960000643 adenine Drugs 0.000 description 2
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 2
- 239000003945 anionic surfactant Substances 0.000 description 2
- 125000000732 arylene group Chemical group 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 150000001565 benzotriazoles Chemical class 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 2
- 239000003093 cationic surfactant Substances 0.000 description 2
- 239000013522 chelant Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 125000004956 cyclohexylene group Chemical group 0.000 description 2
- 125000004979 cyclopentylene group Chemical group 0.000 description 2
- 125000004980 cyclopropylene group Chemical group 0.000 description 2
- OPTASPLRGRRNAP-UHFFFAOYSA-N cytosine Chemical compound NC=1C=CNC(=O)N=1 OPTASPLRGRRNAP-UHFFFAOYSA-N 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 125000001153 fluoro group Chemical group F* 0.000 description 2
- UYTPUPDQBNUYGX-UHFFFAOYSA-N guanine Chemical compound O=C1NC(N)=NC2=C1N=CN2 UYTPUPDQBNUYGX-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 125000004836 hexamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 238000009616 inductively coupled plasma Methods 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- 239000004310 lactic acid Substances 0.000 description 2
- 235000014655 lactic acid Nutrition 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 230000033116 oxidation-reduction process Effects 0.000 description 2
- 125000004817 pentamethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[*:1] 0.000 description 2
- 229910001414 potassium ion Inorganic materials 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 230000027756 respiratory electron transport chain Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000001509 sodium citrate Substances 0.000 description 2
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 239000011975 tartaric acid Substances 0.000 description 2
- 235000002906 tartaric acid Nutrition 0.000 description 2
- RWQNBRDOKXIBIV-UHFFFAOYSA-N thymine Chemical compound CC1=CNC(=O)NC1=O RWQNBRDOKXIBIV-UHFFFAOYSA-N 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 229910021642 ultra pure water Inorganic materials 0.000 description 2
- 239000012498 ultrapure water Substances 0.000 description 2
- KJTLQQUUPVSXIM-ZCFIWIBFSA-N (R)-mevalonic acid Chemical compound OCC[C@](O)(C)CC(O)=O KJTLQQUUPVSXIM-ZCFIWIBFSA-N 0.000 description 1
- OTOIIPJYVQJATP-BYPYZUCNSA-N (R)-pantoic acid Chemical compound OCC(C)(C)[C@@H](O)C(O)=O OTOIIPJYVQJATP-BYPYZUCNSA-N 0.000 description 1
- RBNPOMFGQQGHHO-UHFFFAOYSA-N -2,3-Dihydroxypropanoic acid Natural products OCC(O)C(O)=O RBNPOMFGQQGHHO-UHFFFAOYSA-N 0.000 description 1
- HMBHAQMOBKLWRX-UHFFFAOYSA-N 2,3-dihydro-1,4-benzodioxine-3-carboxylic acid Chemical compound C1=CC=C2OC(C(=O)O)COC2=C1 HMBHAQMOBKLWRX-UHFFFAOYSA-N 0.000 description 1
- OGMADIBCHLQMIP-UHFFFAOYSA-N 2-aminoethanethiol;hydron;chloride Chemical compound Cl.NCCS OGMADIBCHLQMIP-UHFFFAOYSA-N 0.000 description 1
- 150000005019 2-aminopurines Chemical class 0.000 description 1
- KFJDQPJLANOOOB-UHFFFAOYSA-N 2h-benzotriazole-4-carboxylic acid Chemical compound OC(=O)C1=CC=CC2=NNN=C12 KFJDQPJLANOOOB-UHFFFAOYSA-N 0.000 description 1
- GUOVBFFLXKJFEE-UHFFFAOYSA-N 2h-benzotriazole-5-carboxylic acid Chemical compound C1=C(C(=O)O)C=CC2=NNN=C21 GUOVBFFLXKJFEE-UHFFFAOYSA-N 0.000 description 1
- PZBQVZFITSVHAW-UHFFFAOYSA-N 5-chloro-2h-benzotriazole Chemical compound C1=C(Cl)C=CC2=NNN=C21 PZBQVZFITSVHAW-UHFFFAOYSA-N 0.000 description 1
- RHIULBJJKFDJPR-UHFFFAOYSA-N 5-ethyl-1h-pyrimidine-2,4-dione Chemical compound CCC1=CNC(=O)NC1=O RHIULBJJKFDJPR-UHFFFAOYSA-N 0.000 description 1
- LRUDIIUSNGCQKF-UHFFFAOYSA-N 5-methyl-1H-benzotriazole Chemical compound C1=C(C)C=CC2=NNN=C21 LRUDIIUSNGCQKF-UHFFFAOYSA-N 0.000 description 1
- SHVCSCWHWMSGTE-UHFFFAOYSA-N 6-methyluracil Chemical compound CC1=CC(=O)NC(=O)N1 SHVCSCWHWMSGTE-UHFFFAOYSA-N 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- ROFVEXUMMXZLPA-UHFFFAOYSA-N Bipyridyl Chemical group N1=CC=CC=C1C1=CC=CC=N1 ROFVEXUMMXZLPA-UHFFFAOYSA-N 0.000 description 1
- MIKUYHXYGGJMLM-GIMIYPNGSA-N Crotonoside Natural products C1=NC2=C(N)NC(=O)N=C2N1[C@H]1O[C@@H](CO)[C@H](O)[C@@H]1O MIKUYHXYGGJMLM-GIMIYPNGSA-N 0.000 description 1
- RBNPOMFGQQGHHO-UWTATZPHSA-N D-glyceric acid Chemical compound OC[C@@H](O)C(O)=O RBNPOMFGQQGHHO-UWTATZPHSA-N 0.000 description 1
- NYHBQMYGNKIUIF-UHFFFAOYSA-N D-guanosine Natural products C1=2NC(N)=NC(=O)C=2N=CN1C1OC(CO)C(O)C1O NYHBQMYGNKIUIF-UHFFFAOYSA-N 0.000 description 1
- ODBLHEXUDAPZAU-ZAFYKAAXSA-N D-threo-isocitric acid Chemical compound OC(=O)[C@H](O)[C@@H](C(O)=O)CC(O)=O ODBLHEXUDAPZAU-ZAFYKAAXSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 1
- ODBLHEXUDAPZAU-FONMRSAGSA-N Isocitric acid Natural products OC(=O)[C@@H](O)[C@H](C(O)=O)CC(O)=O ODBLHEXUDAPZAU-FONMRSAGSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910020830 Sn-Bi Inorganic materials 0.000 description 1
- 229910020882 Sn-Cu-Ni Inorganic materials 0.000 description 1
- 229910020935 Sn-Sb Inorganic materials 0.000 description 1
- 229910020994 Sn-Zn Inorganic materials 0.000 description 1
- 229910018731 Sn—Au Inorganic materials 0.000 description 1
- 229910018728 Sn—Bi Inorganic materials 0.000 description 1
- 229910018956 Sn—In Inorganic materials 0.000 description 1
- 229910008757 Sn—Sb Inorganic materials 0.000 description 1
- 229910009069 Sn—Zn Inorganic materials 0.000 description 1
- 229910009071 Sn—Zn—Bi Inorganic materials 0.000 description 1
- 229910009078 Sn—Zn—In Inorganic materials 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 229910007570 Zn-Al Inorganic materials 0.000 description 1
- RLNONDYNURUMCD-UHFFFAOYSA-N [F].OO Chemical compound [F].OO RLNONDYNURUMCD-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 125000003354 benzotriazolyl group Chemical group N1N=NC2=C1C=CC=C2* 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 229940075419 choline hydroxide Drugs 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000009918 complex formation Effects 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 125000004976 cyclobutylene group Chemical group 0.000 description 1
- 229940097265 cysteamine hydrochloride Drugs 0.000 description 1
- 229940104302 cytosine Drugs 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229940090960 diethylenetriamine pentamethylene phosphonic acid Drugs 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- WPUMTJGUQUYPIV-JIZZDEOASA-L disodium (S)-malate Chemical compound [Na+].[Na+].[O-]C(=O)[C@@H](O)CC([O-])=O WPUMTJGUQUYPIV-JIZZDEOASA-L 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- DUYCTCQXNHFCSJ-UHFFFAOYSA-N dtpmp Chemical compound OP(=O)(O)CN(CP(O)(O)=O)CCN(CP(O)(=O)O)CCN(CP(O)(O)=O)CP(O)(O)=O DUYCTCQXNHFCSJ-UHFFFAOYSA-N 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229940029575 guanosine Drugs 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- LMRFGCUCLQUNCZ-UHFFFAOYSA-N hydrogen peroxide hydrofluoride Chemical compound F.OO LMRFGCUCLQUNCZ-UHFFFAOYSA-N 0.000 description 1
- JLLMDXDAVKMMEG-UHFFFAOYSA-N hydrogen peroxide phosphoric acid Chemical compound OO.OP(O)(O)=O JLLMDXDAVKMMEG-UHFFFAOYSA-N 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000004957 naphthylene group Chemical group 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229940083082 pyrimidine derivative acting on arteriolar smooth muscle Drugs 0.000 description 1
- 150000003230 pyrimidines Chemical class 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- LOAUVZALPPNFOQ-UHFFFAOYSA-N quinaldic acid Chemical compound C1=CC=CC2=NC(C(=O)O)=CC=C21 LOAUVZALPPNFOQ-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000019265 sodium DL-malate Nutrition 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 235000011083 sodium citrates Nutrition 0.000 description 1
- 239000001394 sodium malate Substances 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 235000011008 sodium phosphates Nutrition 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 description 1
- DVUVKWLUHXXIHK-UHFFFAOYSA-N tetraazanium;tetrahydroxide Chemical compound [NH4+].[NH4+].[NH4+].[NH4+].[OH-].[OH-].[OH-].[OH-] DVUVKWLUHXXIHK-UHFFFAOYSA-N 0.000 description 1
- ODBLHEXUDAPZAU-UHFFFAOYSA-N threo-D-isocitric acid Natural products OC(=O)C(O)C(C(O)=O)CC(O)=O ODBLHEXUDAPZAU-UHFFFAOYSA-N 0.000 description 1
- 229940113082 thymine Drugs 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 229940035893 uracil Drugs 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/30604—Chemical etching
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/10—Etching compositions
- C23F1/14—Aqueous compositions
- C23F1/32—Alkaline compositions
- C23F1/38—Alkaline compositions for etching refractory metals
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/44—Compositions for etching metallic material from a metallic material substrate of different composition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
- H01L21/32133—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only
- H01L21/32134—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by liquid etching only
Definitions
- the present invention relates to processing of a semiconductor substrate on which a titanium (Ti) -based metal film is formed, and particularly to processing of a semiconductor substrate on which copper (Cu) wiring is applied, and mainly relates to a Ti film or a titanium-tungsten (TiW) alloy.
- the present invention relates to an etching agent and etching method for a Ti-based metal film such as a film.
- the present invention also relates to processing of a semiconductor substrate on which metal bumps or metal wirings having a lower ionization tendency than tungsten are formed, particularly processing of a semiconductor substrate on which a tungsten (W) -based metal film is applied.
- the present invention relates to an etching agent and etching method for a W-based metal film such as a film or a TiW alloy film.
- a hydrogen peroxide etchant for example, an acidic etchant such as hydrofluoric acid-hydrogen peroxide mixture, phosphoric acid-hydrogen peroxide mixture, etc. Etc. are known.
- the inclusion of metals such as copper, silver, and gold accelerates the decomposition of hydrogen peroxide and shortens the lifetime of the etching solution, as well as controlling the concentration of hydrogen peroxide in the etching solution. It has a problem that it is difficult to do this, and the etching rate is slow.
- a fluorine-hydrogen peroxide mixture has problems such as a low etching rate and a large amount of corrosion of the base metal and the metal on the substrate. There are problems such as large corrosion of the base metal and the metal on the substrate.
- Patent Document 1 A method of etching a Ti metal film such as a Ti film or a TiW alloy film without generating an etching residue.
- an etching solution containing, for example, hydrogen peroxide, a phosphonic acid compound or the like is disclosed (Patent Document 2).
- Patent Document 2 an etching solution containing, for example, hydrogen peroxide, a phosphonic acid compound or the like is disclosed.
- nitrogen-containing phosphonic acid compounds are disclosed as phosphonic acid-based compounds, but such phosphonic acid-based compounds, for example, have a strongly colored solution, and are not suitable for use as an etching agent for semiconductor substrates. Therefore, when added to a hydrogen peroxide-containing solution, there are problems such as concern about stability.
- an etching method for improving the etching selectivity of a Ti-based metal film in the processing of a semiconductor substrate provided with Cu wiring or a semiconductor substrate useful for lead (Pb) -free solder bump formation, and Development of an etching solution used for selective etching of a Ti metal film is desired.
- the problem to be solved by the present invention is a method of etching a Ti-based metal film on a semiconductor substrate, in particular, selective etching of a Ti-based metal film on a semiconductor substrate to which Cu wiring is applied. It is to provide a method of performing and an etchant used therefor.
- the present inventors have developed a metal bump or metal wiring having a lower ionization tendency than tungsten such as a gold bump on the Ti substrate metal film etching agent on the semiconductor substrate on which the Cu wiring of the present invention completed previously is formed.
- a metal bump or metal wiring having a lower ionization tendency than tungsten such as a gold bump on the Ti substrate metal film etching agent on the semiconductor substrate on which the Cu wiring of the present invention completed previously is formed.
- side etching occurs in which the W-based metal film directly under the metal bump or metal wiring is etched. It has been found that this is caused by contact with different metals (galvanic corrosion) between tungsten and a metal having a lower ionization tendency than that of tungsten such as gold and silver (low ionization tendency metal).
- the present inventors have continued to improve the etching agent for Ti-based metal films and developed an etching agent that can suppress dissimilar metal contact corrosion (Galvanic corrosion), such as metal bumps or metals having a low ionization tendency such as gold and silver.
- An etching agent that can be applied to a W-based metal film-laid semiconductor substrate on which wiring is formed can be provided.
- the present invention comprises (A) hydrogen peroxide, (B) a phosphonic acid chelating agent having a hydroxyl group and (C) a basic compound, (D-1) a copper anticorrosive or / and (D-2) a hydroxyl group.
- the invention relates to an etching agent for a semiconductor substrate comprising a solution containing 0.01% by weight to 3% by weight of two or more kinds of anionic species having no oxidizing power other than the phosphonic acid-based chelating agent having the above.
- the present invention also relates to an etching method characterized by selectively etching a Ti metal film on a semiconductor substrate using the semiconductor substrate etching agent.
- the present invention relates to an etching method characterized by etching a W-based metal film on a semiconductor substrate using the semiconductor substrate etching agent.
- the present invention relates to (B) a phosphonic acid chelating agent having a hydroxyl group and (C) a basic compound, and (D-1) a copper anticorrosive or / and (D-2) a phosphonic acid having a hydroxyl group.
- the etching agent preparation liquid for semiconductor substrates which consists of a solution containing 2 or more types of anionic species which does not have oxidizing power other than a system chelating agent.
- etching agents of the present invention (A) hydrogen peroxide, (B) a phosphonic acid chelating agent having a hydroxyl group, (C) among basic compounds, (c-1) inorganic alkali and (D-1) Using a semiconductor substrate etchant made of a solution containing a copper anticorrosive, selectively etching a Ti-based metal film on a semiconductor substrate, particularly a Ti-based metal film on a substrate having a Cu wiring formed thereon.
- the etching can be performed without having a residue.
- the etching solution for preparing a semiconductor substrate of the present invention and hydrogen peroxide are used.
- the deterioration of the performance of the etching agent due to the decomposition of hydrogen peroxide can be further suppressed, and the instability of hydrogen peroxide due to the coexistence with alkali can be avoided.
- the etching rate of the Ti-based metal film can be appropriately adjusted depending on the mixing ratio of the agent preparation liquid and hydrogen peroxide.
- etching agents of the present invention other than (A) hydrogen peroxide, (B) a phosphonic acid chelating agent having a hydroxyl group, (C) a basic compound and (D-2) a phosphonic acid chelating agent having a hydroxyl group
- an etching agent for a semiconductor substrate comprising a solution containing 0.01% by weight to 3% by weight of two or more kinds of anionic species having no oxidizing power of, for example, gold, silver, palladium, tin, or alloys thereof
- the W-based metal and the metal having a lower ionization tendency than tungsten are used. It is possible to suppress foreign metal contact corrosion (Galvanic corrosion) and, in turn, side etching caused by the corrosion. Achieve the results.
- the Ti-based metal film refers to a Ti-based metal film formed on a substrate by a Ti alloy such as Ti or TiW. (Hereafter, it may be abbreviated as “Ti-based film”.)
- the W-based metal film refers to a W-based metal film formed on a substrate by a W alloy such as W or TiW alloy. (Hereinafter, it may be abbreviated as “W-based film”.)
- Hydrogen peroxide according to the etching agent of the present invention oxidizes Ti film, W film, TiW alloy film, etc., and facilitates dissolution reaction with basic compounds (alkali compounds) such as inorganic alkalis and organic amines. It is used for the purpose.
- basic compounds alkali compounds
- the Ti-based metal film etching agent on the semiconductor substrate on which the copper wiring is formed (hereinafter sometimes abbreviated as the etching agent according to the present invention ⁇ 1>).
- the concentration of hydrogen peroxide used is usually 10 to 35% by weight, preferably 15 to 30% by weight, more preferably 15 to 26% by weight, and still more preferably 20 to 26% by weight in the same etching agent. It is.
- an etching agent for a W-based metal film on a semiconductor substrate on which a metal bump or metal wiring having a lower ionization tendency than tungsten (hereinafter abbreviated as an etching agent according to the present invention ⁇ 2>).
- the concentration of hydrogen peroxide used in (A) is usually 10 to 35% by weight, preferably 15 to 35% by weight, more preferably as the concentration in the same etching agent. It is 20% to 35% by weight, more preferably 24% to 32% by weight.
- commercially available hydrogen peroxide (A) may be used as appropriate. Specifically, for example, commercially available hydrogen peroxide is diluted to an appropriate concentration with distilled water, purified water, ion exchange water, ultrapure water, or the like. Can be used.
- the (B) hydroxyl group-containing phosphonic acid-based chelating agent according to the etching agent of the present invention prevents decomposition of hydrogen peroxide, maintains its oxidizing power, and coordinates with Ti or W together with hydrogen peroxide. What has the effect
- Examples of the (B) phosphonic acid-based chelating agent having a hydroxyl group include 1-hydroxyethylidene-1,1′-diphosphonic acid (HEDPO), 1-hydroxypropylidene-1,1′-diphosphonic acid, 1-hydroxy Examples include alkane polyphosphonic acids having a hydroxyl group such as butylidene-1,1′-diphosphonic acid, and 1-hydroxyethylidene-1,1′-diphosphonic acid (HEDPO) is particularly preferable.
- HEDPO 1-hydroxyethylidene-1,1′-diphosphonic acid
- HEDPO 1-hydroxyethylidene-1,1′-diphosphonic acid
- These phosphonic acid-based chelating agents have good solubility of chelates in the presence of hydrogen peroxide, Ti-based or W-based metal oxides, and Cu. The effect of suppressing the occurrence of the occurrence is shown.
- the concentration of the (B) phosphonic acid chelating agent having a hydroxyl group in the etching agent according to the present invention ⁇ 1> is usually 0.1 to 3% by weight, preferably 0. It is 2 to 2% by weight, more preferably 0.3 to 1% by weight, still more preferably 0.4 to 0.8% by weight.
- the concentration of the (B) hydroxyl group-containing phosphonic acid chelating agent used in the etching agent according to the present invention ⁇ 2> is usually 0.1 to 3% by weight, preferably as the concentration in the etching agent. It is 0.1 to 2% by weight, more preferably 0.15 to 1% by weight, still more preferably 0.2 to 0.6% by weight.
- the basic compound (C) relating to the etching agent of the present invention means one selected from (c-1) inorganic alkali and (c-2) organic amine, but in the etching agent according to the present invention ⁇ 1>, In this case, the basic compound is required to be an inorganic alkali.
- the inorganic alkali is used for the purpose of maintaining the pH of the solution in a predetermined range and dissolving oxides such as a Ti film, a W film and a TiW alloy film oxidized with hydrogen peroxide.
- (c-1) inorganic alkali in the etching agent according to the present invention ⁇ 1> include, for example, ammonia, alkali metal hydroxides such as potassium hydroxide and sodium hydroxide, etc. Metal hydroxides are preferred, with potassium hydroxide being more preferred.
- (c-1) inorganic alkali in the etching agent according to the present invention ⁇ 2> include, for example, ammonia, alkali metal hydroxides such as potassium hydroxide and sodium hydroxide, and the like. Of these, alkali metal hydroxides are preferred, and sodium hydroxide is more preferred.
- the (c-2) organic amine according to the etching agent of the present invention is used only for the etching agent according to the present invention ⁇ 2>, and the pH of the solution is maintained within a predetermined range as in the case of the (c-1) inorganic alkali. At the same time, it is used for the purpose of dissolving an oxide such as a W film or a TiW alloy film oxidized with hydrogen peroxide.
- Specific examples of the organic amine include, for example, tetramethylammonium hydroxide (TMAH), choline hydroxide, etc. Among them, tetramethylammonium hydroxide (TMAH) is preferable.
- the etching agent according to the present invention ⁇ 2> may be at least one basic compound selected from the above (c-1) inorganic alkalis and (c-2) organic amines. At least one basic compound selected from sodium and tetramethylammonium hydroxide (TMAH) is preferable, and among these, it is more preferable to use either sodium hydroxide or tetramethylammonium hydroxide (TMAH) alone.
- TMAH sodium hydroxide and tetramethylammonium hydroxide (TMAH) generate ions with small molar conductivity (large hydration radius) such as sodium ion or quaternary ammonium ion in aqueous solution, and the ions are more than tungsten.
- contact with a metal having a low ionization tendency suppresses the transfer of electrons to hydrogen ions on the metal surface, and thus makes it easier to suppress the dissolution of tungsten (Galvanic corrosion). preferable.
- the concentration of (c-1) inorganic alkali used in the etching agent according to the present invention ⁇ 1> is the kind of inorganic alkali used, (B) a phosphonic acid-based chelating agent having a hydroxyl group, which will be described later (D-1 )
- D-1 a phosphonic acid-based chelating agent having a hydroxyl group, which will be described later
- the concentration in the same etching agent is usually 0.2 to 12% by weight, preferably 0.5 to 10% by weight, more preferably 0.8 to 4% by weight. It is.
- the concentration of (c-1) inorganic alkali used is the kind of inorganic alkali used, (B) a phosphonic acid-based chelating agent having a hydroxyl group and a later-described (D-2 )
- the concentration of the two or more kinds of anionic species having no oxidizing power other than the phosphonic acid-based chelating agent having a hydroxyl group varies depending on the addition amount, pH of the solution, etc. % By weight to 5% by weight, preferably 0.2% by weight to 4% by weight, more preferably 0.2% by weight to 2% by weight.
- the (D-1) copper anticorrosive in the etching agent according to the present invention ⁇ 1> is preferably used in the etching agent according to the present invention ⁇ 1> among the etching agents of the present invention. Any of those generally used in this field may be used, and examples thereof include epihalohydrin-modified polyamides, benzotriazole compounds, hydroxycarboxylic acids, and nitrogen-containing ring compounds.
- Epihalohydrin-modified polyamides exemplified as copper anticorrosives include, for example, —NH— group hydrogen present in the main chain in a polycondensate obtained by reacting diaminoalkylamine and dicarboxylic acid. A part or all of the atoms are represented by the following general formula [1]
- X represents a halogen atom
- R 1 represents an alkylene group having 1 to 6 carbon atoms, an arylene group, or a general formula [3]
- R 2 represents an alkylene group having 1 to 6 carbon atoms
- R 3 and R 4 each independently represents an alkylene group having 1 to 6 carbon atoms.
- Etc. which have a repeating unit shown by these.
- R 1 , R 3 , R 4 and X are the same as above, or any one or both of these repeating units, or a combination of these and the repeating unit represented by the general formula [2]. And the like.
- the repeating unit represented by the general formula [4] is tautomerized by, for example, heat treatment, and the general formula [6]
- R 1 , R 3 , R 4 and X may take the structure of the repeating unit represented by the general formula [4]. This includes the case where the repeating unit represented by the general formula [6] coexists.
- examples of the halogen atom represented by X include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom, and a chlorine atom is particularly preferable.
- the alkylene group having 1 to 6 carbon atoms represented by R 1 , R 3 and R 4 may be any of linear, branched or cyclic Or a normal alkylene group having 1 to 6 carbon atoms, specifically, a linear alkylene group such as a methylene group, ethylene group, trimethylene group, tetramethylene group, pentamethylene group, hexamethylene group, etc.
- Branched alkylene groups such as propylene group, methylmethylene group, dimethylmethylene group, ethylmethylene group, methylethylene group, methyltetramethylene group, ethyltetramethylene group, for example, cyclopropylene group, cyclopentylene group, cyclohexylene group And the like, and a tetramethylene group is particularly preferable.
- Examples of the arylene group represented by R 1 usually include those having 6 to 10 carbon atoms, such as a phenylene group and a naphthylene group.
- the alkylene group having 1 to 6 carbon atoms represented by R 2 may be linear, branched or cyclic, and usually has 1 to 6 carbon atoms, preferably 1 to 1 carbon atoms.
- linear alkylene groups such as methylene group, ethylene group, trimethylene group, tetramethylene group, pentamethylene group, hexamethylene group, such as propylene group, methylmethylene group, dimethyl group, etc.
- Branched alkylene groups such as methylene group, ethylmethylene group, methylethylene group, methyltetramethylene group, ethyltetramethylene group, for example, cyclic alkylene such as cyclopropylene group, cyclobutylene group, cyclopentylene group, cyclohexylene group, etc. Groups such as methylene group, ethylene group, trimethylene group, propylene group, dimethylmethylene group, etc. And those having 1 to 3 carbon atoms are preferred.
- the epihalohydrin-modified polyamide mentioned as a copper anticorrosive may be a commercially available product or may be appropriately synthesized by a conventional method. For example, it reacts with a corresponding dicarboxylic acid or a derivative thereof and diaminoalkylamine or a derivative thereof. For example, it can be produced by reacting a polymer polyamide having a repeating unit obtained by the reaction with an epihalohydrin such as epichlorohydrin.
- Euramin P-5500 (trade name: manufactured by Mitsui Chemicals, Inc.) which is an aqueous solution containing an epihalohydrin-modified polyamide (molecular weight of 4,000 to 5,000 epihalohydrin-modified polyamide)
- Euramin P-5600 (trade name: manufactured by Mitsui Chemicals, Inc.)
- WS-4020 (trade name: manufactured by Seiko PMC Co., Ltd.)
- the molecular weight of the epihalohydrin-modified polyamide mentioned as a copper anticorrosive is usually about 2,000 to 1,000,000, preferably 2,000 to 800,000, more preferably 3,000 to 600,000. It is.
- examples of the benzotriazole compound include benzotriazole and its derivatives.
- examples of the benzotriazole derivative include a benzotriazole ring having, for example, a carboxyl group, for example, an alkyl group having 1 to 3 carbon atoms such as a methyl group, an ethyl group, and a propyl group, such as a halogen atom such as a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- examples thereof include those having a substituent such as an atom, and specific examples include 4-carboxybenzotriazole, 5-carboxybenzotriazole, 5-methylbenzotriazole, 5-chlorobenzotriazole and the like.
- Examples of the hydroxycarboxylic acid mentioned as (D-1) copper anticorrosive in the etching agent according to the present invention ⁇ 1> include hydroxytricarboxylic acids such as citric acid and isocitric acid, such as glycolic acid, lactic acid, glyceric acid, Examples thereof include hydroxycarboxylic acids such as tartronic acid, malic acid, tartaric acid, mevalonic acid and pantoic acid.
- Examples of the nitrogen-containing ring compound (D-1) as a copper anticorrosive agent in the etching agent according to the present invention ⁇ 1> include nucleobases, and specific examples include adenine, guanine, 2-amino Purine derivatives such as purine and guanosine, for example pyrimidine derivatives such as cytosine, thymine, uracil, 6-methyluracil and 5-ethyluracil, heterocycle-containing carboxylic acids such as quinaldic acid, amino acids such as cysteamine hydrochloride, bipyridyl Etc. In addition, you may use these copper anticorrosives in mixture of 2 or more types suitably.
- (D-1) copper anticorrosives for example, epihalohydrin-modified polyamide, benzotriazole (BTA), citric acid, adenine and the like are preferable.
- the concentration of (D-1) copper anticorrosive used in the etching agent according to the present invention ⁇ 1> is higher than the concentration that can be used as a copper anticorrosive.
- the concentration in the agent is usually 0.05 to 5% by weight, preferably 0.05 to 2% by weight, more preferably 0.08 to 1.5% by weight.
- (D-2) 0.01% by weight to 3% by weight of two or more anionic species having no oxidizing power other than the phosphonic acid chelating agent having a hydroxyl group is Among the etching agents of the present invention, it is used as an etching agent for a W-based metal film on a semiconductor substrate on which metal bumps or metal wirings having a lower ionization tendency than tungsten are formed.
- the anion species means an anion species derived from a compound capable of dissociating into a cation and an anion in an aqueous solution, and more specifically, an anion generated when an inorganic acid or an organic acid is dissociated in an aqueous solution, that is, an inorganic species.
- the anion species here does not include hydroxide ions generated from at least one basic compound selected from (C) (c-1) inorganic alkalis and (c-2) organic amines. .
- inorganic acid-derived anion species include sulfate ions, sulfite ions, chloride ions, phosphate ions, phosphite ions, hypophosphite ions, and the like. Product ions and phosphate ions are preferred.
- anionic species derived from the organic acid include carbonate ions, monocarboxylic acid ions such as acetate ions, hydroxytricarboxylate ions such as citrate ions and isocitrate ions, such as glycolate ions, and lactic acid ions.
- the concentration of the two or more anionic species having no oxidizing power other than the phosphonic acid chelating agent having a hydroxyl group is 0.01% as the concentration in the etching agent according to the present invention ⁇ 2>.
- the content is required to be from 3% by weight to 3% by weight, of which 0.02% by weight to 1% by weight is preferable, among which 0.03% by weight to 0.5% by weight is more preferable.
- a weight percent to 0.3 weight percent is particularly preferred. In particular, by suppressing the use concentration of the anionic species to 0.3% by weight or less, the intended effect of the present invention can be obtained more reliably.
- (D-2) Among two or more kinds of anionic species having no oxidizing power other than the phosphonic acid chelating agent having a hydroxyl group, 0.01 wt% to 3 wt%, sulfate ion, sulfite ion, chloride ion, Selected from 0.0001% to 0.5% by weight of an anionic species derived from at least one inorganic acid selected from phosphate ion, phosphite ion and hypophosphite ion, and citrate ion and malate ion Any one or more organic acids selected from carbonate ions, acetate ions, citrate ions or malate ions in combination with 0.0099% to 2.5% by weight of anion species derived from at least one organic acid Anionic species derived from 0.0001% to 0.5% by weight, other than the anionic species derived from the organic acid selected above, and citrate ion or malate ion A combination of 0.0099 wt% to 2.5 wt% of
- etching agent according to the present invention two or more different anionic species, at least one of which is an anionic species that has an action of inhibiting dissimilar metal contact corrosion (Galvanic corrosion), and at least one other species
- the anionic species having the action of suppressing the contact with different metals is at least one selected from sulfate ion, sulfite ion, chloride ion, phosphate ion, phosphite ion and hypophosphite ion.
- Preferred examples include anionic species derived from inorganic acids of at least one species, and anionic species derived from at least one organic acid selected from carbonate ion, acetate ion, citrate ion and malate ion, which act as a buffering agent.
- the anionic species include at least one or more inorganic acid-derived anionic species selected from phosphate ions, phosphite ions and hypophosphite ions, and at least one or more types selected from citrate ions and malate ions.
- Preferred examples include anionic species derived from organic acids.
- a phosphate ion, a phosphite ion, a hypophosphite ion, a citrate ion, a malate ion can be mentioned preferably.
- the anion species acting as an action to suppress the foreign metal contact corrosion needs to be a small amount, and the specific use concentration is usually set to 0. 0 as the concentration in the etching agent according to the present invention ⁇ 2>. It is 0001 wt% to 0.5 wt%, preferably 0.001 wt% to 0.2 wt%, more preferably 0.002 wt% to 0.2 wt%. If an amount exceeding 0.5% by weight is used, the electrolyte concentration in the etching agent becomes too high and an electron is likely to be delivered, and conversely, dissimilar metal contact corrosion (Galvanic corrosion) is promoted. It is not preferable.
- Such anion species has an effect of dispersing an electrical influence over a wide range while maintaining an electric double layer formed on the surface of the W-based metal film by hydroxide ions.
- the specific concentration of the anionic species acting as a buffering agent is usually 0.0099% to 2.5% by weight, preferably 0.019% by weight as the concentration in the etching agent according to the present invention ⁇ 2>. % To 0.8% by weight, more preferably 0.028% to 0.3% by weight, still more preferably 0.028% to 0.1% by weight.
- the combined value of the anion species acting as a buffering agent and the anion species acting as an action to suppress the above-mentioned dissimilar metal contact corrosion (Galvanic corrosion) has no oxidizing power other than the phosphonic acid-based chelating agent having the hydroxyl group. It becomes the use concentration of the anionic species more than the species.
- the concentration of the anion species that acts to suppress the contact corrosion of different metals is set to 0.002% to 0.2% by weight, and the concentration of the anion species that acts as a buffering effect is reduced. If it is suppressed as much as possible and is in the range of 0.028 wt% to 0.1 wt%, it is possible to more reliably suppress foreign metal contact corrosion (Galvanic corrosion) while maintaining a buffering effect.
- the supply form of two or more kinds of anionic species having no oxidizing power other than these (D-2) phosphonic acid-based chelating agents having a hydroxyl group is particularly suitable as long as it is dissociated in an aqueous solution and becomes the anionic species.
- anionic species having no oxidizing power other than these (D-2) phosphonic acid-based chelating agents having a hydroxyl group is particularly suitable as long as it is dissociated in an aqueous solution and becomes the anionic species.
- sulfuric acid, sulfurous acid, hydrochloric acid, phosphoric acid, carbonic acid, acetic acid, citric acid, malic acid or other inorganic acid or organic acid may be supplied.
- etching agents Sodium sulfate, sodium sulfite, sodium chloride, sodium phosphate , Sodium hydrogen phosphate, sodium carbonate, sodium hydrogen carbonate, sodium acetate, sodium citrate, sodium malate, and other inorganic or organic acid salts may be supplied, but according to the present invention ⁇ 2>
- the type of cationic species in the etching agent may be important.
- Citric acid, malic acid and the like which are “copper anticorrosive agents” added to the etching agent according to the present invention ⁇ 1>, are the “phosphonic acid-based chelate having a hydroxyl group” in the etching agent according to the present invention ⁇ 2>. It is included in two or more kinds of anionic species having no oxidizing power other than the agent, but when these are used as “copper anticorrosives”, they are added in a concentration range that can act as “copper anticorrosives”.
- the etching agent according to the present invention in addition to the “copper anticorrosive”, among “two or more anionic species having no oxidizing power other than the phosphonic acid-based chelating agent having a hydroxyl group”
- hydroxytricarboxylic acid such as citric acid and hydroxycarboxylic acid such as malic acid
- the total use concentration of the “copper anticorrosive” and the hydroxytricarboxylic acid or hydroxycarboxylic acid is as described above. It is desirable to set the concentration range of such “copper anticorrosive”.
- etching agent according to the present invention in addition to “two or more kinds of anionic species having no oxidizing power other than phosphonic acid-based chelating agent having a hydroxyl group”, “copper anticorrosive” is used in combination
- copper anticorrosive it is desirable not to use a “compound that can be dissociated in an aqueous solution to generate the anion species” as a copper anticorrosive. It is necessary to set the concentration so that the total weight% of the amount falls within the above range.
- the etching agent according to the present invention ⁇ 1> includes at least (A) hydrogen peroxide, (B) a phosphonic acid chelating agent having a hydroxyl group, (c-1) an inorganic alkali, and (D -1)
- An etching agent for a semiconductor substrate comprising a solution containing a copper anticorrosive while the etching agent according to the present invention ⁇ 2> includes (A) hydrogen peroxide and (B) a phosphonic acid chelate having a hydroxyl group And (C) at least one basic compound selected from (c-1) inorganic alkali and (c-2) organic amine, and (D) an oxidizing power other than a phosphonic acid chelating agent having a hydroxyl group.
- a semiconductor substrate etching agent comprising a solution comprising 0.01% by weight to 3% by weight of two or more anionic species.
- the etching agent according to the present invention ⁇ 1> includes at least (A) hydrogen peroxide, (B) a phosphonic acid chelating agent having a hydroxyl group, (c-1) an inorganic alkali, and (D-1) a copper anticorrosive.
- the solution is usually adjusted and maintained so that the pH is in the range of 7 to 10, preferably 8 to 9.5, more preferably 8.5 to 9.2.
- a pH adjuster usually used in this field may be used for the purpose of maintaining the solution according to the present invention in the above pH range.
- a pH adjuster may be used as necessary, for example, for the purpose of improving the stability of the solution.
- pH adjuster examples include boric acid, nitric acid, hydrochloric acid, sulfuric acid, and hydrofluoric acid. In addition, you may use these pH adjusters in mixture of 2 or more types suitably.
- concentration of the pH adjuster used is usually 0.05 to 4% by weight, preferably 0.2 to 3% by weight, more preferably 1 to 2 as the concentration in the etching agent according to the present invention ⁇ 1>. % By weight.
- the etching agent according to the present invention ⁇ 2> includes at least (A) hydrogen peroxide, (B) a phosphonic acid chelating agent having a hydroxyl group, (C) (c-1) an inorganic alkali, and (c-2) an organic amine. 0.01% by weight to 3% by weight of at least one basic compound selected from the above and (D-2) two or more anionic species having no oxidizing power other than the phosphonic acid chelating agent having a hydroxyl group
- the solution is usually adjusted and maintained so that the pH is in the range of 6 to 10, preferably 6 to 9, more preferably 7 to 8.5.
- pH of the solution is too high, problems such as reduced stability of hydrogen peroxide, increased corrosion of surrounding metals (Al, etc.) and semiconductor substrates (Si, etc.), and pH too low For example, a decrease in W etching rate, a decrease in complex formation ability of a phosphonic acid-based chelating agent having a hydroxyl group, a deterioration in the balance of etching rates of Ti and W in a TiW alloy, generation of etching residues, an increase in side etching, etc. In order to cause a problem, it is preferable to adjust and maintain the pH within the above range.
- the etching agent according to the present invention since the total weight% of the anionic species in the solution is important, it is selected from the above (C) (c-1) inorganic alkali and (c-2) organic amine.
- the concentration range of two or more anionic species having no oxidizing power other than (D-2) a phosphonic acid chelating agent having a hydroxyl group is 0.01% by weight to 3% by weight. It is preferable to adjust and maintain the pH within the above range within the range of%. That is, in the etching agent according to the present invention ⁇ 2>, since the concentration range of the anionic species is important, (D-2) has no oxidizing power other than the phosphonic acid chelating agent having a hydroxyl group. It is desirable not to use compounds that dissociate in an aqueous solution and generate the anionic species other than the anionic species of the species or more.
- the etching agent according to the present invention comprises (A) hydrogen peroxide, (B) a phosphonic acid chelating agent having a hydroxyl group and (C) a basic compound, (D-1) copper anticorrosive or / and (D- 2) Two or more kinds of anionic species having no oxidizing power other than the phosphonic acid chelating agent having a hydroxyl group are mixed and dissolved in water so that the concentration is as described above. Can be prepared. In addition, each component may be sequentially added and mixed in water in an appropriate order, or all components may be added and then dissolved in water.
- the thus prepared etching agent of the present invention is preferably subjected to a filtration treatment or the like before use.
- the water used here may be distilled water purified by distillation, ion exchange treatment, etc., purified water, ion exchange water, ultrapure water, or the like.
- etching agent In the etching agent according to the present invention ⁇ 1>, (A) hydrogen peroxide, (B) a phosphonic acid chelating agent having a hydroxyl group, (c-1) an inorganic alkali, and (D-1) a copper anticorrosive. Except for using reagents, reagents usually used in a known etching method can be used.
- Nonionic surfactants such as NCW1002 (polyoxyethylene / polyoxypropylene alkyl ether, manufactured by Wako Pure Chemical Industries, Ltd.) are particularly preferable. These surfactants may be used in a concentration range usually used in this field, and the concentration in the etching agent according to the present invention ⁇ 1> is usually 0.001 to 1% by weight, preferably 0.01 to 0%. .5% by weight.
- etching agent in the etching agent according to the present invention ⁇ 2>, (A) hydrogen peroxide, (B) a phosphonic acid chelating agent having a hydroxyl group, (C) (c-1) an inorganic alkali, and (c- 2) at least one basic compound selected from organic amines and (D-2) two or more anionic species having no oxidizing power other than the phosphonic acid chelating agent having a hydroxyl group
- a surfactant or the like it is also possible to use a surfactant or the like, but as mentioned above, the total weight% of anionic species in the solution in the etching agent is important. Therefore, it is desirable not to include other components that affect the weight percent.
- the surfactant used in the etching agent according to the present invention ⁇ 2> for example, a nonionic interface used for the purpose of improving the wettability to the semiconductor surface by reducing the surface tension of the solution.
- Surfactants such as surfactants, anionic surfactants, cationic surfactants, benign surfactants, etc., among these surfactants, compounds that do not dissociate in aqueous solution and do not generate anionic species Needless to say, it is preferable to use.
- the amount of these surfactants used is usually 0.001% to 1% by weight, preferably 0.01% to 0.5% by weight, as the concentration in the etching agent according to the present invention ⁇ 2>. It is.
- the etching agent of the present invention comprises (A) hydrogen peroxide, (B) a phosphonic acid chelating agent having a hydroxyl group and (C) a basic compound, and (D-1) a copper anticorrosive or / And (D-2) prepared using 0.01 to 3% by weight of two or more anionic species having no oxidizing power other than a phosphonic acid-based chelating agent having a hydroxyl group as its main component It is supplied in various forms such as a one-component system or a multi-component system such as a two-component system.
- the etching agent In the case of using the etching agent, it may be used as it is in the case of a one-liquid system, and in the case of a multi-liquid system such as a two-liquid system, all the solutions are appropriately mixed before use.
- a solution containing all the components as described above may be prepared and used.
- a multi-liquid system of two or more liquid systems is preferable from the viewpoint of stability and simplicity.
- It contains hydrogen peroxide from the viewpoint of suppressing deterioration of the performance of the etching solution due to decomposition of hydrogen peroxide and avoiding instability of hydrogen peroxide due to coexistence with a basic compound (alkali compound).
- a two-component system comprising an etchant preparation solution (hereinafter sometimes abbreviated as “etchant preparation solution according to the present invention”) comprising a solution comprising
- the concentration of each component in each solution of a multi-liquid system such as the above-described two-component system is prepared by appropriately mixing all the solutions, and the concentration in the solution containing all the components, that is, the final concentration is These may be appropriately selected so as to be in the concentration range as described above and contained in each solution. That is, for example, when the etching agent according to the present invention ⁇ 1> is a two-component system, hydrogen peroxide is 10 to 50% by weight, preferably 15 to 30% by weight, more preferably 15 to 26% by weight, still more preferably.
- Ratio (weight ratio) [first liquid: second liquid] is usually 1: 9 to 9 : 2, preferably 4: 6 to 9: 1, more preferably 6: 4 to 8: 2, and the concentration in the solution containing all the components prepared, that is, the final concentration is Hydrogen peroxide is usually 10 to 35% by weight, preferably 15 to 30% by weight, more preferably 15 to 26% by weight, still more preferably 20 to 26% by weight, and a phosphonic acid chelating agent having a hydroxyl group is usually used. 0.1 to 3% by weight, preferably 0.2 to 2% by weight, more preferably 0.3 to 1% by weight, still more preferably 0.4 to 0.8% by weight.
- copper anticorrosive is usually 0.05 to 5 wt%, preferably 0.05 to 2 wt%, More preferably, it is 0.08 to 1.5% by weight.
- the solution may be the respective preparation of.
- hydrogen peroxide is 10% to 35% by weight, preferably 20% to 35% by weight, more preferably 24% to 35%.
- a solution containing 1% by weight, more preferably 30% by weight to 35% by weight (first liquid), and 0.1% by weight to 30% by weight, preferably 0.1% by weight, of a phosphonic acid chelating agent having a hydroxyl group % To 20% by weight, more preferably 0.15% to 10% by weight, still more preferably 0.2% to 6% by weight, and at least one basic compound selected from inorganic alkalis and organic amines.
- 1% by weight to 48% by weight preferably 0.1% by weight to 30% by weight, more preferably 0.1% by weight to 20% by weight, and an oxidizing power other than a phosphonic acid chelating agent having a hydroxyl group Not 2
- a solution containing 0.01% to 6% by weight of the above anionic species preferably 0.02 to 2% by weight, more preferably 0.03 to 1% by weight, and still more preferably 0.03 to 0.6% by weight.
- the etching agent preparation liquid (second liquid) comprising a mixing ratio (weight ratio) [first liquid: second liquid] is usually 30:70 to 99: 1, preferably 60:40 to 95: 5, more preferably Is appropriately mixed so that the ratio is 80:20 to 95: 5, and the concentration of the prepared solution containing all the components, that is, the final concentration of hydrogen peroxide is usually 10% to 35% by weight, preferably 15% to 35% by weight, more preferably 20% to 35% by weight, still more preferably 24% to 32% by weight, and the phosphonic acid chelating agent having a hydroxyl group is usually 0.1% to 3% by weight.
- % By weight preferably 0.1% to 2% % By weight, more preferably 0.15% by weight to 1% by weight, and still more preferably 0.2 to 0.6% by weight, and at least one basic compound selected from inorganic alkalis and organic amines is usually at least 0.1%.
- 1% by weight to 5% by weight preferably 0.2% by weight to 4% by weight, more preferably 0.2% by weight to 2% by weight, and an oxidizing power other than a phosphonic acid chelating agent having a hydroxyl group
- Two or more kinds of anionic species are usually 0.01% to 3% by weight, preferably 0.02 to 1% by weight, more preferably 0.03 to 0.5% by weight, and still more preferably 0.03% by weight.
- Two solutions may be prepared respectively so as to be in the range of% to 0.3% by weight.
- the pH of each solution in the two-component system as described above is not particularly limited, and the pH of the solution containing all the above-described components prepared by appropriately mixing all the solutions, that is, the final pH is
- the pH of each solution may be adjusted so as to be in the pH range as described above.
- the final pH when the two components are mixed is usually pH 7 to 10, preferably pH 8 to 9, in the etching agent according to the present invention ⁇ 1>.
- the pH of each solution may be adjusted so that the pH is 8.5 to 9.2, more preferably pH 6 to 10, preferably in the etching agent according to the present invention ⁇ 2>.
- the pH of each solution may be adjusted so that the pH is 6 to 9, more preferably 7 to 8.5.
- the etching method in the etching agent according to the present invention ⁇ 1> includes at least (A) hydrogen peroxide, (B) a phosphonic acid chelating agent having a hydroxyl group, (c-1) an inorganic alkali, and (D-1) What is necessary is just to process the said board
- the etching method in the etching agent according to the present invention ⁇ 2> includes at least (A) hydrogen peroxide, (B) a phosphonic acid chelating agent having a hydroxyl group, (C) (c-1) an inorganic alkali, and (c -2) at least one basic compound selected from organic amines and (D-2) two or more anionic species having no oxidizing power other than the phosphonic acid-based chelating agent having a hydroxyl group 0.01% by weight
- the substrate may be treated with the etching agent of the present invention, for example, by contacting an etching agent comprising a solution containing ⁇ 3 wt% with a W-based metal film on the semiconductor substrate.
- the etching method of the present invention may be performed in accordance with a dip method or a spray etch method, which are known etching methods, except that the substrate is etched using the etching agent according to the present invention as described above. .
- the etching agent preparation solution of the present invention (that is, a phosphonic acid chelating agent and a basic compound having a hydroxyl group and a copper anticorrosive or / and a phosphonic acid system having a hydroxyl group)
- Etching agent preparation solution consisting of a solution containing two or more kinds of anionic species having no oxidizing power other than a chelating agent
- this and a solution containing hydrogen peroxide are appropriately mixed at the time of use.
- etching methods known per se include, for example, (1) a method in which a semiconductor substrate on which a Ti-based metal film or a W-based metal film is formed is immersed in an etching agent, and (2) a Ti-based metal film or a W-based metal film. (3) The semiconductor substrate on which the Ti-based metal film or the W-based metal film is formed is immersed in the etching agent while the solution is immersed in the etching agent in the state in which the semiconductor substrate on which the metal is formed is immersed in the etching agent. (4) A method in which an etching agent is sprayed onto a semiconductor substrate on which a Ti-based metal film or a W-based metal film is formed, or the like.
- the semiconductor substrate on which the Ti-based metal film or the W-based metal film is formed may be swung as necessary.
- the etching method is not particularly limited, and for example, a batch method, a single wafer method, or the like can be used.
- the semiconductor substrate on which the Ti-based metal film to which the etching agent and the etching method according to the present invention ⁇ 1> are applied is, for example, a substrate in which Cu wiring is applied on the semiconductor substrate on which the Ti-based metal film is formed. Etc.
- the metal constituting the Pb-free solder in the process using the etching agent according to the present invention ⁇ 1> is a Sn alloy mainly composed of tin (Sn), such as silver (Ag), bismuth (Bi), indium.
- An alloy made of Sn and at least one metal selected from (In), copper (Cu), nickel (Ni), zinc (Zn), aluminum (Al), antimony (Sb), gold (Au), and the like can be given.
- Specific examples of Pb-free solder include, for example, Sn—Ag, Sn—Ag—Bi—In, Sn—Ag—Bi, Sn—Cu, Sn—Cu—Ag, Sn—Ag—Bi—Cu.
- the etching agent and the etching method according to the present invention ⁇ 1> include a semiconductor substrate according to the present invention, that is, a semiconductor substrate on which a Ti-based metal film is formed, particularly a semiconductor substrate in which Cu wiring is provided on the Ti-based film. Further, it is preferably used in a substrate process for producing Pb-free solder bumps.
- a method for forming a Pb-free solder bump a method generally used in this field may be used. For example, on a semiconductor substrate according to the present invention, that is, a semiconductor substrate on which a Ti-based metal film is formed, as necessary. After a pattern is formed by applying a resist, etc., one or more metal films selected from the metals constituting the Pb-free solder are laminated, then the metal constituting the Pb-free solder is plated, and further subjected to heating, etc. What is necessary is just to process according to the conventional method in a field
- a Ni film is formed on the Cu wiring in order to improve the adhesion between the Cu wiring and the Sn alloy constituting the Pb-free solder bump.
- a Cr film or the like may be formed.
- the semiconductor substrate on which the W-based metal film to which the etching agent and the etching method according to the present invention ⁇ 2> are applied is formed, for example, ionized more than tungsten on the semiconductor substrate on which the W-based metal film is formed.
- the substrate include a metal bump or a metal wiring that has a low tendency.
- Examples of the metal constituting the metal bump or metal wiring having a lower ionization tendency than tungsten according to the process using the etching agent according to the present invention ⁇ 2> include gold (Au), silver (Ag), palladium (Pd), tin ( Sn) or an alloy thereof or an alloy containing these metals as a main component, and has a lower ionization tendency than tungsten, and constitutes metal bumps or metal wirings that cause dissimilar metal contact corrosion (Galvanic corrosion) It is. Also, among these metal bumps or metal wirings, gold (Au) bumps or gold (Au) wirings are preferable.
- a method usually performed in this field may be used.
- a semiconductor substrate used in the present invention that is, a W-based metal film is formed.
- a circuit may be formed on a semiconductor substrate with a resist or the like and then processed by plating, chemical vapor deposition, or the like.
- nickel (Ni), palladium is interposed between the W-based metal film and the bump in order to improve the adhesiveness.
- Conductors / adhesive sites such as (Pd) and copper (Cu) films may be present.
- Examples of the semiconductor substrate used in the present invention include silicon materials such as silicon, amorphous silicon, polysilicon, silicon oxide film, and silicon nitride film, and compound semiconductors such as gallium arsenide, gallium phosphorus, and indium phosphorus. Things.
- the etching agent and etching method of this invention are used suitably for the semiconductor substrate which consists of a silicon-type material.
- Etching using a Ti-based metal film etchant on a semiconductor substrate on which a copper wiring is formed is completed in a shorter time when heated than at normal temperature. If the treatment temperature is high, the decomposition of hydrogen peroxide becomes severe and the life of the etching solution is shortened.
- the lower limit is usually room temperature or higher, preferably 20 ° C. or higher, more preferably 25 ° C. or higher, and the upper limit is usually 60 ° C. or lower, preferably 50 ° C. or lower, more preferably 40 ° C. or lower. . That is, the temperature of the etching solution of the present invention is set to the temperature range as described above, and this may be brought into contact with the substrate.
- Etching using a W-based metal film etching agent on a semiconductor substrate on which a metal bump or metal wiring having a lower ionization tendency than tungsten, that is, etching using the etching agent according to the present invention ⁇ 2> is performed at room temperature when heated.
- the etching rate difference between the portion where etching with the same etching agent and the portion where etching due to dissimilar metal contact corrosion (Galvanic corrosion) occurs in parallel is relatively Since the processing time in which the etching agent and the metal come into contact with each other is reduced and side etching is suppressed, the processing temperature is preferably set higher than room temperature. Specifically, for example, a temperature range of 10 ° C. to 70 ° C., preferably 20 ° C. to 60 ° C., more preferably 30 ° C. to 60 ° C. may be set, and this may be brought into contact with the substrate.
- the etching treatment time cannot be limited because the surface state and shape of the object to be treated are not constant, but is practically usually 1 minute to 1 hour, preferably 1 to 30 minutes, more preferably 1 to 15 minutes. .
- Etching treatment of a Ti-based metal film on a semiconductor substrate on which a copper wiring according to the present invention is formed that is, a semiconductor substrate having a Ti-based metal film formed using the etchant according to the present invention ⁇ 1>. If done, the Ti-based film can be selectively etched. In particular, when the etching agent is used for a substrate having Cu wiring on the Ti-based film, the Ti etching selectivity with respect to Cu can be improved. In addition, by suppressing the amount of dissolved Cu, excessive side etching does not occur, and further, decomposition of hydrogen peroxide derived from Cu can be suppressed, so that the life of the etching agent is improved and the process margin is increased. Can do.
- the etching agent for Ti-based metal film on the semiconductor substrate on which the copper wiring according to the present invention is formed that is, the etching agent according to the present invention ⁇ 1> can be suitably used for the Pb-free solder bump forming step. .
- Etching agent for W-based metal film on semiconductor substrate on which metal bump or metal wiring having lower ionization tendency than tungsten according to the present invention that is, W-based metal film using the etching agent according to the present invention ⁇ 2>
- Etching the semiconductor substrate on which the metal is formed not only enables the W-based metal film to be etched quickly, but also etches the W-based metal film immediately below the metal bump or metal wiring, so-called a metal having a lower ionization tendency than tungsten. Side etching caused by different metal contact corrosion (galvanic corrosion) due to bumps or metal wiring and tungsten can be suppressed.
- the etching agent according to the present invention is particularly ( C)
- sodium hydroxide or tetraammonium hydroxide as at least one basic compound selected from (c-1) inorganic alkali and (c-2) organic amine, sodium ions and 4
- Electron transfer in which cation species such as quaternary ammonium ions cause dissimilar metal contact corrosion (Galvanic corrosion) is suppressed, and a small amount of specific anion species such as sulfate ions and citrate ions are present. It is possible to disperse electrical effects over a wide range while maintaining the electric double layer. Corrode (Galvanic corrosion) it has advantages such as can be suppressed.
- the etching agent preparation liquid of the present invention can be mixed with a solution containing hydrogen peroxide as appropriate when used, and used as an etching agent. Since it is possible to prevent hydrogen peroxide instability due to coexistence with a basic compound (alkali compound), hydrogen peroxide and the etching preparation liquid can be mixed at an arbitrary ratio. There is an advantage that the etching rate of the film or the W-based metal film can be appropriately adjusted.
- alkali hydroxide and ammonia especially alkali hydroxide is used for pH adjustment of the etchant preparation solution in the etchant according to the present invention ⁇ 1>
- an etchant in which this and a solution containing hydrogen peroxide are mixed is used.
- the Ti dissolution rate is improved, for example, the Ti / Cu selection ratio is improved as compared with the case where the pH is adjusted using an organic alkali such as tetramethylammonium hydroxide. High effects such as high throughput can be expected.
- Examples 2-5 (1) Preparation of etching agent according to the present invention ⁇ 1> The etching agent was prepared in the same manner as in Example 1 except that each component in the etching agent was used in a predetermined amount shown in Table 1 below. (2) Etching Performed in the same manner as in Example 1. (3) Results In the same manner as in Example 1, the amount of metal on the etched Cu plate and Ti plate surfaces was measured. The results are also shown in Table 1. In Table 1, the water content of each etching solution is omitted.
- EDTA ethylenediaminetetraacetic acid
- DEPPO diethylenetriaminepentamethylenephosphonic acid
- TMAH tetramethylammonium hydroxide
- Example 1 As is clear from the results of Example 1 and Comparative Example 4, when organic amine (TMAH) was used as the alkali, Cu was not etched at all, and Ti was hardly etched.
- TMAH organic amine
- KOH inorganic alkali
- Ti can be selectively etched, that is, Ti can be etched efficiently with almost no Cu being etched. I understood.
- the Ti / Cu dissolution rate ratio is improved when potassium hydroxide is used as an alkali than when ammonia is used, that is, Ti is selected. It was found that it can be etched.
- Example 6 Preparation of etching agent according to the present invention ⁇ 1> An etching agent having the following composition was prepared. Hydrogen peroxide 24.5% by weight Phosphonic acid chelating agent (60% HEDPO solution) 0.8% by weight [HEDPO content: about 0.5% by weight] Copper anticorrosive (benzotriazole) 0.1% by weight Inorganic alkali (potassium hydroxide) 2.0% by weight Water 72.6% by weight pH 9.0 * HEDPO: Trade name “DEQEST 2010” (manufactured by Solusia Japan Co., Ltd.) was used.
- Hydrogen peroxide 24.5% by weight Phosphonic acid chelating agent (60% HEDPO solution) 0.8% by weight [HEDPO content: about 0.5% by weight] Copper anticorrosive (benzotriazole) 0.1% by weight Inorganic alkali (potassium hydroxide) 2.0% by weight Water 72.6% by weight pH 9.0 * HEDPO: Trade name “DEQEST 2010” (manufact
- Example 8 (1) Preparation of etching agent according to the present invention ⁇ 1> An etching agent having the following composition was prepared. Hydrogen peroxide 25.0% by weight Phosphonic acid chelating agent (HEDPO) 0.5% by weight Copper anticorrosive (EPA) 1.0% by weight Inorganic alkali (ammonia) 0.9% by weight Water 72.6% by weight pH 8.5 (2) Etching Etching treatment was performed in the same manner as in Example 7. (3) Results The hydrogen peroxide concentration was measured in the same manner as in Example 7. The results are also shown in Table 4.
- HEDPO Phosphonic acid chelating agent
- EPA Copper anticorrosive
- Inorganic alkali ammonia
- Examples 15-21 (1) Preparation of etching agent according to the present invention ⁇ 2> An etching agent was prepared in the same manner as in Example 9 except that a predetermined amount of sodium chloride or sodium hydrogen phosphate was used instead of sodium sulfate. Tables 7 and 8 show components of anion 2 in the etching agent. (2) Etching Performed in the same manner as in Reference Example 1. (3) Results Relative length of the side length of the TiW alloy film remaining in the rectangle when the side length of the TiW alloy film in Reference Example 1 is set to 100 as measured in the same manner as in Reference Example 1. Side etching was compared by calculating (%). The results are shown in Table 7 and Table 8 together with the component of anion 2 in the etching agent.
- Examples 22 to 25 and Comparative Example 7 (1) Preparation of Etching Agent Etching agent was prepared in the same manner as in Example 9 except that a predetermined amount of a salt serving as an anionic species derived from a specific inorganic acid or organic acid was used in an aqueous solution instead of sodium sulfate. . Table 9 shows components of anion 2 in the etchant. (2) Etching Performed in the same manner as in Reference Example 1. (3) Results Relative length of the side length of the TiW alloy film remaining in the rectangle when the side length of the TiW alloy film in Reference Example 1 is set to 100 as measured in the same manner as in Reference Example 1. Side etching was compared by calculating (%). The results are shown in Table 9 together with the anion 2 component in the etching agent.
- Example 26 a predetermined amount of malic acid was used instead of citric acid, and the weight percent of sodium sulfate was changed.
- Example 27 a predetermined amount of malic acid was used instead of citric acid.
- an etching agent was prepared in the same manner as in Example 9 except that a predetermined amount of a salt that was an anionic species derived from a specific organic acid was used in an aqueous solution instead of sodium sulfate.
- Comparative Example 8 an etching agent was prepared in the same manner as in Example 9 except that a predetermined amount of sodium citrate was used instead of sodium sulfate. Table 10 shows each component in these etching agents.
- Reference Example 2 and Example 28 (1) Preparation of Etching Agent Reference Example 2 is the same as Reference Example 1 except that a predetermined amount of tetramethylammonium hydroxide (TMAH), which is an organic amine, is used instead of NaOH, which is an inorganic alkali, as a basic compound.
- Etching agent was prepared in Example 28, except that a predetermined amount of tetramethylammonium hydroxide (TMAH), which is an organic amine, was used as a basic compound in place of NaOH, which was an inorganic alkali, as in Reference Example 2.
- TMAH tetramethylammonium hydroxide
- Table 11 shows each component in these etching agents.
- TMAH tetramethylammonium hydroxide
- Reference examples 3-5 (1) Preparation of etchant An etchant having the composition shown in Table 12 was prepared. (2) Etching Performed in the same manner as in Reference Example 1. (3) Results Relative length of the side length of the TiW alloy film remaining in the rectangle when the side length of the TiW alloy film in Reference Example 1 is set to 100 as measured in the same manner as in Reference Example 1. Side etching was compared by calculating (%). The results are shown in Table 12 together with each component in the etching agent.
- the TiW alloy film masked with gold bumps, which has a high alkali concentration in the etching agent and cannot suppress side etching when two or more types of anion species are not used. It was found that all of the surface was removed and the bumps were peeled off.
- anionic species that do not participate in dissolution other than hydroxide ions and hydroxyl group-containing phosphonic acid chelating agents that dissolve W-based metal films are placed in the etching agent.
- the electric double layer formed on the surface of the W-based metal film by hydroxide ions due to the effect of different metal battery due to contact between tungsten and a metal that has a lower ionization tendency than tungsten (a metal with a lower ionization tendency) Is distributed so as not to be localized in the vicinity of the interface where tungsten, a metal having a lower ionization tendency than tungsten, and an etching agent (electrolytic solution) are in contact with each other, thereby reducing the contact corrosion of different metals.
- the anionic species contained in the etching agent is capable of stably existing in an aqueous solution without oxidizing power.
- the cation species contained in the basic compound are expected to be less susceptible to side etching due to different metal contact corrosion, so that the transfer of electrons on the metal surface having a lower ionization tendency than tungsten is less likely to occur. Further, as is clear from the results of Reference Examples 3 to 5, sodium ions having a lower molar conductivity than potassium ions and quaternary ammonium ions of TMAH, which is an organic amine, are used as the cation species contained in the basic compound.
- an etching agent for a semiconductor substrate comprising a solution containing (A) hydrogen peroxide, (B) a phosphonic acid chelating agent, (c-1) an inorganic alkali and (D-1) a copper anticorrosive. That is, by using the etching agent according to the present invention ⁇ 1>, a Ti-based metal film on a semiconductor substrate, in particular, a Ti-based metal film on a substrate provided with Cu wiring, is selectively etched.
- etching agents of the present invention other than (A) hydrogen peroxide, (B) a phosphonic acid chelating agent having a hydroxyl group, (C) a basic compound and (D-2) a phosphonic acid chelating agent having a hydroxyl group
- An etching agent for a semiconductor substrate comprising a solution containing 0.01% by weight to 3% by weight of two or more kinds of anionic species having no oxidizing power, ie, an etching agent according to the present invention ⁇ 2>, for example, gold (Au), silver (Ag), palladium (Pd), tin (Sn), W or the like on a semiconductor substrate on which a metal (low ionization tendency metal) bump or wiring having a lower ionization tendency than tungsten is applied.
- Etching of the metal-based metal film suppresses dissimilar metal contact corrosion (galvanic corrosion) due to the W-based metal and the metal having a lower ionization tendency than tungsten. And an effect such that it becomes possible to suppress the side etching by thus the corrosion.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- ing And Chemical Polishing (AREA)
- Weting (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
(1)本発明〈1〉に係るエッチング剤の調製
下記組成からなるエッチング剤を調製した。
過酸化水素 24.5重量%
ホスホン酸系キレート剤(HEDPO) 0.5重量%
銅防食剤(ベンゾトリアゾール) 0.1重量%
無機アルカリ(水酸化カリウム) 2.0重量%
水 72.9重量%
pH 9.0
※HEDPO=1-ヒドロキシエチリデン-1,1'-ジホスホン酸
(2)エッチング
上記(1)のエッチング剤に、表面積と重量を予め測定したTi板並びにCu板を、室温で10分間浸漬しエッチング処理を行った。
(3)結果
上記(2)で得られたエッチング後のエッチング剤を適量取り、0.1mol/L硝酸溶液で希釈した後、誘導結合プラズマ発光分光分析装置(商品名「SPS3000 ICP発光分光分析装置」、エスアイアイナノテクノロジー(株)社製)を用いて、溶解したTi及びCu量を測定した。得られた金属量を単位面積当たりの溶解量に概算し、溶解速度(nm/min)を算出した。その結果及びTi/Cuの溶解速度比を併せて表1に示す。
(1)本発明〈1〉に係るエッチング剤の調製
エッチング剤中の各成分を下記表1に示す所定量用いた以外は、実施例1と同様に調製した。
(2)エッチング
実施例1と同様に行った。
(3)結果
実施例1と同様に、エッチングされたCu板及びTi板表面の金属量を測定した。結果を表1に併せて示す。尚、表1では各エッチング液の水分量は省略する。
(1)エッチング剤の調製
エッチング剤の各成分を下記表2に示す所定量用いた以外は、実施例1と同様に調製した。
(2)エッチング
実施例1と同様に行った。
(3)結果
実施例1と同様に、エッチングされたCu板及びTi板表面の金属量を測定した。結果を表2に併せて示す。
(1)本発明〈1〉に係るエッチング剤の調製
下記組成からなるエッチング剤を調製した。
過酸化水素 24.5重量%
ホスホン酸系キレート剤(60%HEDPO溶液) 0.8重量%
〔HEDPO含有量:約0.5重量%〕
銅防食剤(ベンゾトリアゾール) 0.1重量%
無機アルカリ(水酸化カリウム) 2.0重量%
水 72.6重量%
pH 9.0
※HEDPO:商品名「DEQEST2010」(ソルーシアジャパン(株)社製)を用いた。
(2)エッチング
上記(1)に於けるエッチング剤に、Ti板並びにCu板を、室温で30分間、60分間、90分間それぞれ浸漬しエッチング処理を行った。
(3)結果
エッチング前後のエッチング剤中の過酸化水素濃度を酸化還元滴定により測定し、エッチング前後の過酸化水素の分解率を下記式により概算した。その結果を表3に示す。
過酸化水素分解率(%)=(エッチング前過酸化水素濃度-エッチング後過酸化水素濃度)×100/(エッチング前過酸化水素濃度)
(1)エッチング剤の調製
下記組成からなるエッチング剤を調製した。
過酸化水素 24.5重量%
窒素(N)含有ホスホン酸系キレート剤 2.0重量%
(25%DEPPO七ナトリウム塩水溶液)〔DEPPO含有量:0.5重量%〕
銅防食剤(ベンゾトリアゾール) 0.1重量%
無機アルカリ(水酸化カリウム) 1.7重量%
水 71.7重量%
pH 9.0
※DEPPO:商品名「DEQEST2066」(ソルーシアジャパン(株)社製)を用いた。
(2)エッチング
実施例6と同様にエッチング処理を行った。
(3)結果
実施例6と同様に過酸化水素濃度を測定した。結果を表3に併せて示す。
(1)本発明〈1〉に係るエッチング剤の調製
表1に記載の実施例2と同様の組成からなるエッチング剤を調製した。
(2)エッチング
上記(1)に於けるエッチング剤に、Ti板並びにCu板を、40℃で10分間、20分間及び30分間それぞれ浸漬してエッチング処理を行った。
(3)結果
エッチング前後のエッチング剤中の過酸化水素濃度を酸化還元滴定により測定し、エッチング前後の過酸化水素の分解率を下記式により概算した。その結果を表4に示す。
過酸化水素分解率(%)=(エッチング前過酸化水素濃度―エッチング後過酸化水素濃度)×100/(エッチング前過酸化水素濃度)
(1)本発明〈1〉に係るエッチング剤の調製
下記組成からなるエッチング剤を調製した。
過酸化水素 25.0重量%
ホスホン酸系キレート剤(HEDPO) 0.5重量%
銅防食剤(EPA) 1.0重量%
無機アルカリ(アンモニア) 0.9重量%
水 72.6重量%
pH 8.5
(2)エッチング
実施例7と同様にエッチング処理を行った。
(3)結果
実施例7と同様に過酸化水素濃度を測定した。その結果を表4に併せて示す。
(1)エッチング剤の調製
下記組成からなるエッチング剤を調製した(成分の詳細については表5に記載)。
過酸化水素 28.0重量%
ホスホン酸系キレート剤(HEDPO) 0.34重量%
塩基性化合物(水酸化ナトリウム) 0.58重量%
クエン酸(緩衝剤) 0.07重量%
硫酸ナトリウム 0.0~0.2重量%
水 残部
pH 7.8
※HEDPO=1-ヒドロキシエチリデン-1,1’-ジホスホン酸
(2)エッチング
上記(1)の参考例及び実施例各々に於けるエッチング剤に、金(Au)バンプをチタン-タングステン(TiW)合金膜上に有するシリコンウェハを室温で浸漬し、ウェハ表面のTiW合金膜がなくなった状態をエッチングの終了時とした。エッチング終了後にウェハを純水で洗浄し、金エッチング剤(商品名「Au-Etchant」、和光純薬工業(株)製)に浸漬させ、金バンプを溶解させた。
(3)結果
上記(2)で得られたウェハ上にある、金バンプでマスクされ、矩形に残ったTiW合金膜の上面の辺の長さを走査型電子顕微鏡(商品名「S-4800」、日立ハイテクノロジーズ社製)で観察、測定した。硫酸ナトリウムを添加しないエッチング剤(参考例1)でのTiW合金膜の辺の長さを100とした場合に於ける、各実施例でエッチング後の矩形に残ったTiW合金膜の辺の長さの相対長(%)を算出する事により、サイドエッチングを比較した。その結果を表5に示す。
(1)エッチング剤の調製
下記組成からなるエッチング剤を調製した。
過酸化水素 28.0重量%
ホスホン酸系キレート剤(HEDPO) 0.34重量%
無機アルカリ(水酸化ナトリウム) 0.58重量%
クエン酸(緩衝剤) 0.07重量%
硫酸ナトリウム 1.0重量%
水 70.0重量%
pH 7.8
(2)エッチング
参考例1と同様に行った。
(3)結果
参考例1と同様に測定し、参考例1でのTiW合金膜の辺の長さを100とした場合に於ける、矩形に残ったTiW合金膜の辺の長さの相対長(%)を算出する事により、サイドエッチングを比較した。その結果を表6に示す。
(1)本発明〈2〉に係るエッチング剤の調製
硫酸ナトリウムの代わりに、塩化ナトリウム又はリン酸水素ナトリウムを所定量用いた以外は、実施例9と同様にしてエッチング剤を調製した。当該エッチング剤中のアニオン2の成分を表7及び表8に示す。
(2)エッチング
参考例1と同様に行った。
(3)結果
参考例1と同様に測定し、参考例1でのTiW合金膜の辺の長さを100とした場合に於ける、矩形に残ったTiW合金膜の辺の長さの相対長(%)を算出する事により、サイドエッチングを比較した。その結果をエッチング剤中のアニオン2の成分と併せて表7及び表8に示す。
(1)エッチング剤の調製
硫酸ナトリウムの代わりに、水溶液中で特定の無機酸又は有機酸由来のアニオン種となる塩を所定量用いた以外は、実施例9と同様にしてエッチング剤を調製した。当該エッチング剤中のアニオン2の成分を表9に示す。
(2)エッチング
参考例1と同様に行った。
(3)結果
参考例1と同様に測定し、参考例1でのTiW合金膜の辺の長さを100とした場合に於ける、矩形に残ったTiW合金膜の辺の長さの相対長(%)を算出する事により、サイドエッチングを比較した。その結果をエッチング剤中のアニオン2の成分と併せて表9に示す。
(1)エッチング剤の調製
実施例26では、クエン酸の代わりにリンゴ酸を所定量用いて、更に硫酸ナトリウムの重量%を変え、実施例27では、クエン酸の代わりにリンゴ酸を所定量用いて、更に硫酸ナトリウムの代わりに、水溶液中で特定の有機酸由来のアニオン種となる塩を所定量用いた以外は、実施例9と同様にしてエッチング剤を調製した。また、比較例8では、硫酸ナトリウムの代わりに、クエン酸ナトリウムを所定量用いた以外は、実施例9と同様にしてエッチング剤を調製した。これらのエッチング剤中の各成分を表10に示す。
(2)エッチング
参考例1と同様に行った。
(3)結果
参考例1と同様に測定し、参考例1でのTiW合金膜の辺の長さを100とした場合に於ける、矩形に残ったTiW合金膜の辺の長さの相対長(%)を算出する事により、サイドエッチングを比較した。その結果をエッチング剤中の各成分と併せて表10に示す。
(1)エッチング剤の調製
参考例2では、塩基性化合物として無機アルカリであるNaOHの代わりに、有機アミンであるテトラメチルアンモニウムヒドロキシド(TMAH)を所定量用いた以外は、参考例1と同様にしてエッチング剤を調製し、実施例28では、参考例2と同様に塩基性化合物として無機アルカリであるNaOHの代わりに、有機アミンであるテトラメチルアンモニウムヒドロキシド(TMAH)を所定量用いた以外は、実施例9と同様にしてエッチング剤を調製した。これらのエッチング剤中の各成分を表11に示す。
(2)エッチング
参考例1と同様に行った。
(3)結果
参考例1と同様に測定し、参考例2でのTiW合金膜の辺の長さを100とした場合に於ける、矩形に残ったTiW合金膜の辺の長さの相対長(%)を算出する事により、サイドエッチングを比較した。その結果をエッチング剤中の各成分と併せて表11に示す。
(1)エッチング剤の調製
表12で示される組成からなるエッチング剤を調製した。
(2)エッチング
参考例1と同様に行った。
(3)結果
参考例1と同様に測定し、参考例1でのTiW合金膜の辺の長さを100とした場合に於ける、矩形に残ったTiW合金膜の辺の長さの相対長(%)を算出する事により、サイドエッチングを比較した。その結果をエッチング剤中の各成分と併せて表12に示す。
Claims (49)
- 少なくとも以下の(A)、(B)及び(C)と、(D-1)又は/及び(D-2)を含む溶液からなる半導体基板用エッチング剤。
(A)過酸化水素
(B)ヒドロキシル基を有するホスホン酸系キレート剤
(C)塩基性化合物
(D-1)銅防食剤
(D-2)ヒドロキシル基を有するホスホン酸系キレート剤以外の酸化力を有さない2種以上のアニオン種0.01重量%~3重量% - 前記半導体基板が、銅配線が形成された半導体基板であって、少なくとも前記(A)、(B)、(C)及び(D-1)を含むものである、請求項1に記載のエッチング剤。
- 前記銅配線が形成された半導体基板が、チタン(Ti)系金属膜上部に銅配線が形成された半導体基板である、請求項2に記載のエッチング剤。
- 前記銅配線が、鉛(Pb)フリーはんだバンプを形成するためのものである、請求項2に記載のエッチング剤。
- Pbフリーはんだバンプ形成工程に使用されるものである、請求項2に記載のエッチング剤。
- 前記溶液のpHが7~10である、請求項2に記載のエッチング剤。
- 前記(B)ヒドロキシル基を有するホスホン酸系キレート剤が、1-ヒドロキシエチリデン-1,1'-ジホスホン酸、1-ヒドロキシプロピリデン-1,1'-ジホスホン酸、1-ヒドロキシブチリデン-1,1'-ジホスホン酸からなる群より選ばれるものである、請求項2に記載のエッチング剤。
- 前記(C)塩基性化合物が、(c-1)無機アルカリである、請求項2に記載のエッチング剤。
- 前記(c-1)無機アルカリが、アルカリ金属水酸化物又はアンモニアである、請求項8に記載のエッチング剤。
- 前記(c-1)無機アルカリが、水酸化カリウム又は水酸化ナトリウムである、請求項8に記載のエッチング剤。
- 前記(D-1)銅防食剤が、エピハロヒドリン変性ポリアミド、ベンゾトリアゾール化合物、ヒドロキシカルボン酸又は含窒素環化合物である、請求項2に記載のエッチング剤。
- (A)過酸化水素10~35重量%、(B)ヒドロキシル基を有するホスホン酸系キレート剤0.1~3重量%、(c-1)無機アルカリ0.2~12重量%及び(D-1)銅防食剤0.05~5重量%を含むものである、請求項8に記載のエッチング剤。
- 過酸化水素を含んでなる溶液と、ヒドロキシル基を有するホスホン酸系キレート剤、無機アルカリ及び銅防食剤を含む溶液からなるエッチング剤調製液から調製される、請求項8に記載のエッチング剤。
- 過酸化水素を含んでなる溶液と前記エッチング剤調製液との混合比が1:9~98:2である、請求項13に記載のエッチング剤。
- 過酸化水素を含んでなる溶液のpHと前記エッチング剤調製液のpHを、これら溶液を混合したものに於ける最終pHが7~10の範囲となるように調整した、請求項13に記載のエッチング剤。
- 過酸化水素を含んでなる溶液と前記エッチング剤調製液とを混合したものに於ける最終濃度が、(A)過酸化水素10~35重量%、(B)ヒドロキシル基を有するホスホン酸系キレート剤0.1~3重量%、(c-1)無機アルカリ0.2~12重量%及び(D-1)銅防食剤0.05~5重量%である、請求項13に記載のエッチング剤。
- 過酸化水素15~30重量%を含んでなる溶液と、ヒドロキシル基を有するホスホン酸系キレート剤0.2~2重量%、無機アルカリ0.5~10重量%及び銅防食剤0.05~2重量%を含む溶液からなるエッチング剤調製液とを、混合比4:6~9:1で調製する、請求項13に記載のエッチング剤。
- 請求項2に記載のエッチング剤を用いて半導体基板上のTi系金属膜の選択的なエッチングを行うことを特徴とする、エッチング方法。
- エッチング剤が、過酸化水素を含んでなる溶液と、ヒドロキシル基を有するホスホン酸系キレート剤、塩基性化合物及び銅防食剤を含む溶液からなるエッチング剤調製液とを混合して調製される、請求項18に記載のエッチング方法。
- 過酸化水素を含んでなる溶液と前記エッチング剤調製液との混合比が1:9~98:2である、請求項19に記載のエッチング方法。
- 前記半導体基板が、タングステンよりもイオン化傾向の低い金属バンプ又は金属配線が形成された半導体基板であって、少なくとも前記(A)、(B)、(C)及び(D-2)を含むものである、請求項1に記載のエッチング剤。
- 前記タングステンよりもイオン化傾向の低い金属バンプ又は金属配線が、金、銀、パラジウム、スズ又はこれらの合金からなるものである、請求項21に記載のエッチング剤。
- 前記タングステンよりもイオン化傾向の低い金属バンプ又は金属配線が形成された半導体基板が、タングステン(W)系金属膜上部に当該金属バンプ又は金属配線が形成された半導体基板である、請求項21に記載のエッチング剤。
- 前記タングステンよりもイオン化傾向の低い金属バンプ又は金属配線が、金属バンプであって、当該金属バンプと前記W系金属膜との間に銅配線が形成されているものである、請求項23に記載のエッチング剤。
- 前記W系金属膜が、チタン-タングステン(TiW)合金膜である、請求項23に記載のエッチング剤。
- 前記溶液のpHが6~10である、請求項21に記載のエッチング剤。
- 前記(B)ヒドロキシル基を有するホスホン酸系キレート剤が、1-ヒドロキシエチリデン-1,1'-ジホスホン酸、1-ヒドロキシプロピリデン-1,1'-ジホスホン酸及び1-ヒドロキシブチリデン-1,1'-ジホスホン酸から選ばれる少なくとも1種以上のものである、請求項21に記載のエッチング剤。
- 前記(C)塩基性化合物が、無機アルカリ及び有機アミンから選ばれる少なくとも1種以上のものである、請求項21に記載のエッチング剤。
- 前記(C)塩基性化合物が、水酸化ナトリウム又はテトラメチルアンモニウムヒドロキシドの何れかである、請求項21に記載のエッチング剤。
- 前記(D-2)ヒドロキシル基を有するホスホン酸系キレート剤以外の酸化力を有さない2種以上のアニオン種0.01重量%~3重量%が、硫酸イオン、亜硫酸イオン、塩化物イオン、リン酸イオン、亜リン酸イオン及び次亜リン酸イオンから選ばれる少なくとも1種以上の無機酸由来のアニオン種0.0001重量%~0.5重量%と、クエン酸イオン及びリンゴ酸イオンから選ばれる少なくとも1種以上の有機酸由来のアニオン種0.0099重量%~2.5重量%との組み合わせである、請求項21に記載のエッチング剤。
- 前記(D-2)ヒドロキシル基を有するホスホン酸系キレート剤以外の酸化力を有さない2種以上のアニオン種0.01重量%~3重量%が、硫酸イオン、亜硫酸イオン、塩化物イオン又はリン酸イオンから選ばれる何れか1種の無機酸由来のアニオン種0.0001重量%~0.5重量%と、クエン酸イオン又はリンゴ酸イオンから選ばれる何れか1種の有機酸由来のアニオン種0.0099重量%~2.5重量%との組み合わせである、請求項21に記載のエッチング剤。
- 前記(D-2)ヒドロキシル基を有するホスホン酸系キレート剤以外の酸化力を有さない2種以上のアニオン種0.01重量%~3重量%が、炭酸イオン、酢酸イオン、クエン酸イオン又はリンゴ酸イオンから選ばれる何れか1種の有機酸由来のアニオン種0.0001重量%~0.5重量%と、上記選択の有機酸由来のアニオン種以外のクエン酸イオン又はリンゴ酸イオンから選ばれる有機酸由来のアニオン種0.0099重量%~2.5重量%との組み合わせである、請求項21に記載のエッチング剤。
- 前記(D-2)ヒドロキシル基を有するホスホン酸系キレート剤以外の酸化力を有さない2種以上のアニオン種0.01重量%~3重量%が、硫酸イオン、亜硫酸イオン及び塩化物イオンから選ばれる少なくとも1種以上の無機酸由来のアニオン種0.0001重量%~0.5重量%と、リン酸イオン、亜リン酸イオン及び次亜リン酸イオンから選ばれる少なくとも1種以上の無機酸由来のアニオン種0.0099重量%~2.5重量%との組み合わせである、請求項21に記載のエッチング剤。
- (A)過酸化水素10重量%~35重量%、(B)ヒドロキシル基を有するホスホン酸系キレート剤0.1重量%~3重量%、(C)塩基性化合物0.1重量%~5重量%及び(D-2)ヒドロキシル基を有するホスホン酸系キレート剤以外の酸化力を有さない2種以上のアニオン種0.01重量%~3重量%を含むものである、請求項21に記載のエッチング剤。
- 過酸化水素を含んでなる溶液と、ヒドロキシル基を有するホスホン酸系キレート剤、塩基性化合物及びヒドロキシル基を有するホスホン酸系キレート剤以外の酸化力を有さない2種以上のアニオン種を含む溶液からなるエッチング剤調製液から調製される、請求項21に記載のエッチング剤。
- 請求項21に記載のエッチング剤を用いて半導体基板上のW系金属膜をエッチングすることを特徴とする、エッチング方法。
- エッチング剤が、過酸化水素を含んでなる溶液と、ヒドロキシル基を有するホスホン酸系キレート剤、塩基性化合物及びヒドロキシル基を有するホスホン酸系キレート剤以外の酸化力を有さない2種以上のアニオン種を含む溶液からなるエッチング剤調製液とを混合して調製される、請求項36に記載のエッチング方法。
- 過酸化水素を含んでなる溶液と前記エッチング剤調製液との混合比が30:70~99:1である、請求項37に記載のエッチング方法。
- 少なくとも以下の(B)及び(C)と、(D-1)又は/及び(D-2)を含む溶液からなる半導体基板用エッチング剤調製液。
(B)ヒドロキシル基を有するホスホン酸系キレート剤
(C)塩基性化合物
(D-1)銅防食剤
(D-2)ヒドロキシル基を有するホスホン酸系キレート剤以外の酸化力を有さない2種以上のアニオン種 - 前記(C)塩基性化合物が、(c-1)無機アルカリであって、少なくとも前記(B)、当該(c-1)及び前記(D-1)を含むものである、請求項39に記載のエッチング剤調製液。
- 過酸化水素を含んでなる溶液と混合してエッチング剤を調製するために用いられる、請求項40に記載のエッチング剤調製液。
- 過酸化水素を含んでなる溶液との混合比が1:9~98:2である、請求項41に記載のエッチング剤調製液。
- 過酸化水素を含んでなる溶液と混合したものに於ける最終pHが7~10の範囲となるように調整された、請求項41に記載のエッチング剤調製液。
- 過酸化水素を含んでなる溶液と混合したものに於ける最終濃度が、(A)過酸化水素10~35重量%、(B)ヒドロキシル基を有するホスホン酸系キレート剤0.1~3重量%、(c-1)無機アルカリ0.2~12重量%及び(D-1)銅防食剤0.05~5重量%となるエッチング剤を調製するために用いられる、請求項41に記載のエッチング剤調製液。
- 少なくとも前記(B)、(C)及び(D-2)を含むものである、請求項39に記載のエッチング剤調製液。
- 過酸化水素を含んでなる溶液と混合してエッチング剤を調製するために用いられる、請求項45に記載のエッチング剤調製液。
- 過酸化水素を含んでなる溶液との混合比が30:70~99:1である、請求項46に記載のエッチング剤調製液。
- 過酸化水素を含んでなる溶液と混合したものに於ける最終pHが6~10の範囲となるように調整された、請求項46に記載のエッチング剤調製液。
- 過酸化水素を含んでなる溶液と混合したものに於ける最終濃度が、(A)過酸化水素10重量%~35重量%、(B)ヒドロキシル基を有するホスホン酸系キレート剤0.1重量%~3重量%、(C)塩基性化合物0.1重量%~5重量%及び(D-2)ヒドロキシル基を有するホスホン酸系キレート剤以外の酸化力を有さない2種以上のアニオン種0.01重量%~3重量%となるエッチング剤を調製するために用いられる、請求項46に記載のエッチング剤調製液。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020107016184A KR101533970B1 (ko) | 2007-12-21 | 2008-12-19 | 에칭제, 에칭방법 및 에칭제 조제액 |
US12/808,903 US8513139B2 (en) | 2007-12-21 | 2008-12-19 | Etching agent, etching method and liquid for preparing etching agent |
JP2009547087A JP5343858B2 (ja) | 2007-12-21 | 2008-12-19 | エッチング剤、エッチング方法及びエッチング剤調製液 |
CN200880121508.XA CN101903988B (zh) | 2007-12-21 | 2008-12-19 | 蚀刻剂、蚀刻方法及蚀刻剂制备液 |
EP08864783A EP2234145B1 (en) | 2007-12-21 | 2008-12-19 | Etching agent, etching method and liquid for preparing etching agent |
HK11102026.1A HK1148110A1 (en) | 2007-12-21 | 2011-03-01 | Etching agent, etching method and liquid for preparing etching agent |
US13/846,225 US8871653B2 (en) | 2007-12-21 | 2013-03-18 | Etching agent, etching method and liquid for preparing etching agent |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007329530 | 2007-12-21 | ||
JP2007-329530 | 2007-12-21 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/808,903 A-371-Of-International US8513139B2 (en) | 2007-12-21 | 2008-12-19 | Etching agent, etching method and liquid for preparing etching agent |
US13/846,225 Division US8871653B2 (en) | 2007-12-21 | 2013-03-18 | Etching agent, etching method and liquid for preparing etching agent |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009081884A1 true WO2009081884A1 (ja) | 2009-07-02 |
Family
ID=40801185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2008/073246 WO2009081884A1 (ja) | 2007-12-21 | 2008-12-19 | エッチング剤、エッチング方法及びエッチング剤調製液 |
Country Status (10)
Country | Link |
---|---|
US (2) | US8513139B2 (ja) |
EP (2) | EP2540870A1 (ja) |
JP (2) | JP5343858B2 (ja) |
KR (1) | KR101533970B1 (ja) |
CN (2) | CN101903988B (ja) |
HK (1) | HK1148110A1 (ja) |
MY (1) | MY152247A (ja) |
SG (1) | SG186683A1 (ja) |
TW (1) | TWI467055B (ja) |
WO (1) | WO2009081884A1 (ja) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011228618A (ja) * | 2010-04-20 | 2011-11-10 | Samsung Electronics Co Ltd | 金属配線用エッチング液組成物、及びこれを利用した薄膜トランジスタ表示板の製造方法 |
CN102576170A (zh) * | 2009-08-20 | 2012-07-11 | 东友Fine-Chem股份有限公司 | 制造用于液晶显示器的阵列基板的方法 |
JP2013033942A (ja) * | 2011-06-30 | 2013-02-14 | Fujifilm Corp | エッチング方法及びこれに用いられるエッチング液、これを用いた半導体基板製品の製造方法 |
WO2013136555A1 (ja) * | 2012-03-12 | 2013-09-19 | 株式会社Jcu | 選択的エッチング方法 |
WO2014014124A1 (en) * | 2012-07-20 | 2014-01-23 | Fujifilm Corporation | Etching method, and method of producing semiconductor substrate product and semiconductor device using the same, as well as kit for preparation of etching liquid |
WO2015002272A1 (ja) * | 2013-07-05 | 2015-01-08 | 和光純薬工業株式会社 | エッチング剤、エッチング方法およびエッチング剤調製液 |
US20150014580A1 (en) * | 2012-02-08 | 2015-01-15 | Dai-Ichi Kogyo Seiyaku Co., Ltd. | Etching liquid for forming texture |
CN105369249A (zh) * | 2014-08-25 | 2016-03-02 | 乐金显示有限公司 | 蚀刻剂组合物和制造薄膜晶体管阵列基板的方法 |
KR20160099918A (ko) * | 2015-02-13 | 2016-08-23 | 한국항공대학교산학협력단 | 다중금속막 식각 방법 및 식각액 |
US9688912B2 (en) | 2012-07-27 | 2017-06-27 | Fujifilm Corporation | Etching method, and etching liquid to be used therein and method of producing a semiconductor substrate product using the same |
JP2018181984A (ja) * | 2017-04-07 | 2018-11-15 | 東京エレクトロン株式会社 | 基板処理方法および基板処理装置 |
KR20190133749A (ko) | 2017-03-31 | 2019-12-03 | 간또 가가꾸 가부시끼가이샤 | 티타늄층 또는 티타늄 함유층의 에칭액 조성물 및 에칭 방법 |
Families Citing this family (51)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2540870A1 (en) * | 2007-12-21 | 2013-01-02 | Wako Pure Chemical Industries, Ltd. | Etching agent, etching method and liquid for preparing etching agent |
TWI530589B (zh) | 2009-12-25 | 2016-04-21 | Mitsubishi Gas Chemical Co | 蝕刻液及使用此蝕刻液的半導體裝置之製造方法 |
JP5718449B2 (ja) * | 2010-03-23 | 2015-05-13 | カンブリオス テクノロジーズ コーポレイション | 金属ナノワイヤを有する透明導体のエッチングパターン形成 |
KR20140048868A (ko) * | 2011-03-30 | 2014-04-24 | 가부시키가이샤 후지미인코퍼레이티드 | 연마용 조성물 및 그것을 사용한 연마 방법 및 반도체 디바이스의 제조 방법 |
US20140197356A1 (en) * | 2011-12-21 | 2014-07-17 | Cabot Microelectronics Corporation | Cmp compositions and methods for suppressing polysilicon removal rates |
US9546321B2 (en) | 2011-12-28 | 2017-01-17 | Advanced Technology Materials, Inc. | Compositions and methods for selectively etching titanium nitride |
CN102629591B (zh) * | 2012-02-28 | 2015-10-21 | 京东方科技集团股份有限公司 | 一种阵列基板的制造方法及阵列基板、显示器 |
WO2014014125A1 (en) | 2012-07-20 | 2014-01-23 | Fujifilm Corporation | Etching method, and method of producing semiconductor substrate product and semiconductor device using the same |
KR20140065616A (ko) * | 2012-11-19 | 2014-05-30 | 동우 화인켐 주식회사 | 액정표시장치용 어레이 기판의 제조방법 |
WO2014087925A1 (ja) * | 2012-12-03 | 2014-06-12 | 三菱瓦斯化学株式会社 | 半導体素子用洗浄液及びそれを用いた洗浄方法 |
CN103046052B (zh) * | 2012-12-27 | 2016-01-20 | 广东山之风环保科技有限公司 | 环保型含钛膜层的退除液及其使用方法 |
JP6044337B2 (ja) * | 2012-12-28 | 2016-12-14 | 三菱瓦斯化学株式会社 | インジウムとガリウムおよび酸素、またはインジウムとガリウムと亜鉛および酸素からなる酸化物のエッチング液およびエッチング方法 |
KR101517013B1 (ko) * | 2013-10-02 | 2015-05-04 | 주식회사 이엔에프테크놀로지 | 구리 및 몰리브덴 함유 막의 식각액 조성물 |
US20150104952A1 (en) * | 2013-10-11 | 2015-04-16 | Ekc Technology, Inc. | Method and composition for selectively removing metal hardmask and other residues from semiconductor device substrates comprising low-k dielectric material and copper |
WO2015054460A1 (en) * | 2013-10-11 | 2015-04-16 | E. I. Du Pont De Nemours And Company | Removal composition for selectively removing hard mask |
KR102279498B1 (ko) * | 2013-10-18 | 2021-07-21 | 주식회사 동진쎄미켐 | 금속 배선 식각액 조성물 및 이를 이용한 금속 배선 형성 방법 |
KR102160286B1 (ko) * | 2013-11-04 | 2020-09-28 | 동우 화인켐 주식회사 | 액정표시장치용 어레이 기판의 제조방법 |
JP6164614B2 (ja) * | 2013-12-06 | 2017-07-19 | メック株式会社 | エッチング液、補給液及び銅配線の形成方法 |
CN103695928B (zh) * | 2014-01-08 | 2015-12-30 | 西南石油大学 | 油气田输油管道用氨基酸衍生物缓蚀剂及其制备方法 |
WO2015108842A1 (en) * | 2014-01-14 | 2015-07-23 | Sachem, Inc. | Selective metal/metal oxide etch process |
CN104498950B (zh) * | 2014-12-02 | 2018-01-02 | 江阴润玛电子材料股份有限公司 | 一种高选择性钛层腐蚀液组合物 |
CN104911595B (zh) * | 2015-06-23 | 2018-02-09 | 西安空间无线电技术研究所 | 一种TiW膜层腐蚀方法 |
CN105603425A (zh) * | 2016-01-25 | 2016-05-25 | 熙腾电子科技(上海)有限公司 | 铜选择性蚀刻液和钛选择性蚀刻液 |
US20170369821A1 (en) * | 2016-06-24 | 2017-12-28 | Samsung Display Co., Ltd. | Cleaning composition for removing oxide and method of cleaning using the same |
CN106229263A (zh) * | 2016-08-01 | 2016-12-14 | 江阴润玛电子材料股份有限公司 | 一种半导体凸块制程用钛钨腐蚀液组合物 |
CN108203829A (zh) * | 2016-12-20 | 2018-06-26 | 群创光电股份有限公司 | 蚀刻液及显示器的制造方法 |
US10879087B2 (en) | 2017-03-17 | 2020-12-29 | Toshiba Memory Corporation | Substrate treatment apparatus and manufacturing method of semiconductor device |
CN107201519B (zh) * | 2017-05-18 | 2019-07-02 | 苏州晶瑞化学股份有限公司 | 一种钛选择性双组份蚀刻液 |
CN107604362B (zh) * | 2017-09-14 | 2019-07-26 | 江阴江化微电子材料股份有限公司 | 一种双组份选择性钛腐蚀液及钛腐蚀方法 |
US20190189631A1 (en) * | 2017-12-15 | 2019-06-20 | Soulbrain Co., Ltd. | Composition for etching and manufacturing method of semiconductor device using the same |
CN109972137B (zh) * | 2017-12-27 | 2023-10-27 | 安集微电子科技(上海)股份有限公司 | 一种钛蚀刻液 |
KR20230030663A (ko) | 2018-02-05 | 2023-03-06 | 후지필름 가부시키가이샤 | 약액, 약액의 제조 방법, 기판의 처리 방법 |
JP6458913B1 (ja) * | 2018-03-26 | 2019-01-30 | 三菱瓦斯化学株式会社 | エッチング液 |
EP3850123B1 (en) * | 2018-09-12 | 2024-01-03 | FUJIFILM Electronic Materials U.S.A, Inc. | Etching compositions |
CN109536965B (zh) * | 2018-12-06 | 2021-03-26 | 江苏矽研半导体科技有限公司 | 用于去除半导体封装件不良镀锡层的剥锡剂及其制备方法 |
CN111640661B (zh) * | 2019-03-01 | 2024-01-30 | 东京毅力科创株式会社 | 基板处理方法、基板处理装置以及存储介质 |
JP2022535440A (ja) * | 2019-06-03 | 2022-08-08 | フジフイルム エレクトロニック マテリアルズ ユー.エス.エー., インコーポレイテッド | エッチング組成物 |
JP2020202320A (ja) | 2019-06-12 | 2020-12-17 | 関東化学株式会社 | 過酸化水素分解抑制剤 |
KR20210045838A (ko) | 2019-10-17 | 2021-04-27 | 삼성전자주식회사 | 금속 함유막 식각액 조성물 및 이를 이용한 집적회로 소자의 제조 방법 |
CN113004801B (zh) * | 2019-12-20 | 2024-03-12 | 安集微电子(上海)有限公司 | 一种化学机械抛光液 |
KR20210100258A (ko) * | 2020-02-05 | 2021-08-17 | 삼성전자주식회사 | 식각 조성물 및 이를 이용한 반도체 소자의 제조 방법 |
JP7399314B2 (ja) * | 2020-04-14 | 2023-12-15 | インテグリス・インコーポレーテッド | モリブデンをエッチングするための方法及び組成物 |
CN111627822A (zh) * | 2020-04-27 | 2020-09-04 | 江苏富乐德半导体科技有限公司 | 一种覆铜陶瓷基板的活性金属层的蚀刻液及其刻蚀方法 |
CN112030165B (zh) * | 2020-08-28 | 2022-05-20 | 武汉迪赛新材料有限公司 | Tft-lcd制程用铜钼合层蚀刻液 |
TWI824299B (zh) | 2020-09-22 | 2023-12-01 | 美商恩特葛瑞斯股份有限公司 | 蝕刻劑組合物 |
CN112522707B (zh) * | 2020-11-20 | 2021-12-03 | 湖北兴福电子材料有限公司 | 一种高选择比的钨蚀刻液 |
CN112725803B (zh) * | 2020-12-22 | 2022-11-15 | 江苏奥首材料科技有限公司 | 一种晶圆级封装用钛蚀刻液 |
CN112981405B (zh) * | 2021-02-23 | 2022-11-15 | 江苏艾森半导体材料股份有限公司 | 一种钛钨蚀刻液及其制备方法和应用 |
KR20220126436A (ko) * | 2021-03-09 | 2022-09-16 | 주식회사 이엔에프테크놀로지 | 디스플레이 기판용 식각액 |
CN115161642B (zh) * | 2022-08-11 | 2023-10-27 | 常州百事瑞机电设备有限公司 | 一种高比重钨基合金蚀刻剂及其配制和使用方法 |
CN116083910A (zh) * | 2022-12-28 | 2023-05-09 | 湖北兴福电子材料股份有限公司 | 一种钛或钛合金的蚀刻液 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002155382A (ja) | 2000-09-05 | 2002-05-31 | Wako Pure Chem Ind Ltd | Ti系膜用エッチング剤及びエッチング方法 |
JP2003328159A (ja) | 2002-05-02 | 2003-11-19 | Mitsubishi Gas Chem Co Inc | 表面処理剤 |
JP2004031791A (ja) | 2002-06-27 | 2004-01-29 | Mitsubishi Chemicals Corp | タングステン合金のエッチング液及びエッチング方法 |
JP2005146358A (ja) * | 2003-11-17 | 2005-06-09 | Mitsubishi Gas Chem Co Inc | チタンまたはチタン合金のエッチング液 |
JP2005163108A (ja) * | 2003-12-02 | 2005-06-23 | Asahi Denka Kogyo Kk | エッチング剤及びこれを用いたエッチング方法 |
JP2007100130A (ja) | 2005-09-30 | 2007-04-19 | Ne Chemcat Corp | 金バンプ又は金配線の形成方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4787958A (en) * | 1987-08-28 | 1988-11-29 | Motorola Inc. | Method of chemically etching TiW and/or TiWN |
JP3184180B2 (ja) * | 1999-04-28 | 2001-07-09 | セイコーインスツルメンツ株式会社 | Ti−Wの選択的エッチング液及びそのエッチング方法 |
JP4821082B2 (ja) * | 2000-03-21 | 2011-11-24 | 和光純薬工業株式会社 | 半導体基板洗浄剤及び洗浄方法 |
JP2003174021A (ja) * | 2001-12-06 | 2003-06-20 | Sharp Corp | 半導体基板の選択的エッチング方法 |
TWI302950B (en) * | 2002-01-28 | 2008-11-11 | Mitsubishi Chem Corp | Cleaning solution and method of cleanimg board of semiconductor device |
EP1562225A4 (en) * | 2002-11-08 | 2007-04-18 | Wako Pure Chem Ind Ltd | CLEANING COMPOSITION AND METHOD FOR CLEANING WITH THE COMPOSITION |
CN1918698B (zh) * | 2004-02-09 | 2010-04-07 | 三菱化学株式会社 | 半导体装置用基板的洗涤液及洗涤方法 |
JP4471094B2 (ja) * | 2004-05-11 | 2010-06-02 | 三菱瓦斯化学株式会社 | チタンまたはチタン合金のエッチング液 |
KR20070103855A (ko) * | 2006-04-20 | 2007-10-25 | 동우 화인켐 주식회사 | 텅스텐 또는 티타늄-텅스텐 합금 식각용액 |
EP2540870A1 (en) * | 2007-12-21 | 2013-01-02 | Wako Pure Chemical Industries, Ltd. | Etching agent, etching method and liquid for preparing etching agent |
-
2008
- 2008-12-19 EP EP12176615A patent/EP2540870A1/en not_active Withdrawn
- 2008-12-19 CN CN200880121508.XA patent/CN101903988B/zh active Active
- 2008-12-19 US US12/808,903 patent/US8513139B2/en active Active
- 2008-12-19 CN CN201310112019.0A patent/CN103258727B/zh active Active
- 2008-12-19 EP EP08864783A patent/EP2234145B1/en not_active Not-in-force
- 2008-12-19 WO PCT/JP2008/073246 patent/WO2009081884A1/ja active Application Filing
- 2008-12-19 MY MYPI20102841 patent/MY152247A/en unknown
- 2008-12-19 JP JP2009547087A patent/JP5343858B2/ja active Active
- 2008-12-19 KR KR1020107016184A patent/KR101533970B1/ko active IP Right Grant
- 2008-12-19 TW TW97149639A patent/TWI467055B/zh active
- 2008-12-19 SG SG2012094710A patent/SG186683A1/en unknown
-
2011
- 2011-03-01 HK HK11102026.1A patent/HK1148110A1/xx not_active IP Right Cessation
-
2012
- 2012-01-12 JP JP2012003786A patent/JP5344051B2/ja not_active Expired - Fee Related
-
2013
- 2013-03-18 US US13/846,225 patent/US8871653B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002155382A (ja) | 2000-09-05 | 2002-05-31 | Wako Pure Chem Ind Ltd | Ti系膜用エッチング剤及びエッチング方法 |
JP2003328159A (ja) | 2002-05-02 | 2003-11-19 | Mitsubishi Gas Chem Co Inc | 表面処理剤 |
JP2004031791A (ja) | 2002-06-27 | 2004-01-29 | Mitsubishi Chemicals Corp | タングステン合金のエッチング液及びエッチング方法 |
JP2005146358A (ja) * | 2003-11-17 | 2005-06-09 | Mitsubishi Gas Chem Co Inc | チタンまたはチタン合金のエッチング液 |
JP2005163108A (ja) * | 2003-12-02 | 2005-06-23 | Asahi Denka Kogyo Kk | エッチング剤及びこれを用いたエッチング方法 |
JP2007100130A (ja) | 2005-09-30 | 2007-04-19 | Ne Chemcat Corp | 金バンプ又は金配線の形成方法 |
Non-Patent Citations (1)
Title |
---|
See also references of EP2234145A4 |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102576170A (zh) * | 2009-08-20 | 2012-07-11 | 东友Fine-Chem股份有限公司 | 制造用于液晶显示器的阵列基板的方法 |
JP2011228618A (ja) * | 2010-04-20 | 2011-11-10 | Samsung Electronics Co Ltd | 金属配線用エッチング液組成物、及びこれを利用した薄膜トランジスタ表示板の製造方法 |
US8894876B2 (en) | 2010-04-20 | 2014-11-25 | Samsung Display Co., Ltd. | Etchant for electrode and method of fabricating thin film transistor array panel using the same |
JP2013033942A (ja) * | 2011-06-30 | 2013-02-14 | Fujifilm Corp | エッチング方法及びこれに用いられるエッチング液、これを用いた半導体基板製品の製造方法 |
US20150014580A1 (en) * | 2012-02-08 | 2015-01-15 | Dai-Ichi Kogyo Seiyaku Co., Ltd. | Etching liquid for forming texture |
JPWO2013136555A1 (ja) * | 2012-03-12 | 2015-08-03 | 株式会社Jcu | 選択的エッチング方法 |
WO2013136555A1 (ja) * | 2012-03-12 | 2013-09-19 | 株式会社Jcu | 選択的エッチング方法 |
US9169437B2 (en) | 2012-03-12 | 2015-10-27 | Jcu Corporation | Selective etching method |
WO2014014124A1 (en) * | 2012-07-20 | 2014-01-23 | Fujifilm Corporation | Etching method, and method of producing semiconductor substrate product and semiconductor device using the same, as well as kit for preparation of etching liquid |
US9688912B2 (en) | 2012-07-27 | 2017-06-27 | Fujifilm Corporation | Etching method, and etching liquid to be used therein and method of producing a semiconductor substrate product using the same |
WO2015002272A1 (ja) * | 2013-07-05 | 2015-01-08 | 和光純薬工業株式会社 | エッチング剤、エッチング方法およびエッチング剤調製液 |
KR20160029094A (ko) | 2013-07-05 | 2016-03-14 | 와코 쥰야꾸 고교 가부시키가이샤 | 에칭제, 에칭방법 및 에칭제 조제액 |
JPWO2015002272A1 (ja) * | 2013-07-05 | 2017-02-23 | 和光純薬工業株式会社 | エッチング剤、エッチング方法およびエッチング剤調製液 |
US9845538B2 (en) | 2013-07-05 | 2017-12-19 | Wako Pure Chemical Industries, Ltd. | Etching agent, etching method and etching agent preparation liquid |
CN105369249A (zh) * | 2014-08-25 | 2016-03-02 | 乐金显示有限公司 | 蚀刻剂组合物和制造薄膜晶体管阵列基板的方法 |
KR20160099918A (ko) * | 2015-02-13 | 2016-08-23 | 한국항공대학교산학협력단 | 다중금속막 식각 방법 및 식각액 |
KR101670421B1 (ko) | 2015-02-13 | 2016-10-28 | 한국항공대학교산학협력단 | 다중금속막 식각 방법 및 식각액 |
KR20190133749A (ko) | 2017-03-31 | 2019-12-03 | 간또 가가꾸 가부시끼가이샤 | 티타늄층 또는 티타늄 함유층의 에칭액 조성물 및 에칭 방법 |
JP2018181984A (ja) * | 2017-04-07 | 2018-11-15 | 東京エレクトロン株式会社 | 基板処理方法および基板処理装置 |
Also Published As
Publication number | Publication date |
---|---|
EP2234145B1 (en) | 2013-02-20 |
EP2234145A1 (en) | 2010-09-29 |
US8871653B2 (en) | 2014-10-28 |
CN103258727B (zh) | 2016-08-03 |
CN101903988A (zh) | 2010-12-01 |
JPWO2009081884A1 (ja) | 2011-05-06 |
KR101533970B1 (ko) | 2015-07-06 |
CN101903988B (zh) | 2013-07-31 |
JP5343858B2 (ja) | 2013-11-13 |
US20110230053A1 (en) | 2011-09-22 |
KR20100100983A (ko) | 2010-09-15 |
US20130280916A1 (en) | 2013-10-24 |
US8513139B2 (en) | 2013-08-20 |
CN103258727A (zh) | 2013-08-21 |
JP5344051B2 (ja) | 2013-11-20 |
MY152247A (en) | 2014-09-15 |
HK1148110A1 (en) | 2011-08-26 |
SG186683A1 (en) | 2013-01-30 |
JP2012080128A (ja) | 2012-04-19 |
EP2234145A4 (en) | 2011-12-07 |
EP2540870A1 (en) | 2013-01-02 |
TW200936812A (en) | 2009-09-01 |
TWI467055B (zh) | 2015-01-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5343858B2 (ja) | エッチング剤、エッチング方法及びエッチング剤調製液 | |
JP6421751B2 (ja) | エッチング剤、エッチング方法およびエッチング剤調製液 | |
EP2922086B1 (en) | Composition, system, and process for TiNxOy removal | |
JP4941650B2 (ja) | 無電解金めっき浴のめっき能維持管理方法 | |
KR101319745B1 (ko) | 범프 형성용 비시안계 전해 금 도금욕 | |
JP2008144188A (ja) | 無電解金めっき浴、無電解金めっき方法及び電子部品 | |
JP2006111953A (ja) | 銅又は銅合金のエッチング剤、その製造法、補給液及び配線基板の製造法 | |
JP2019059962A (ja) | 銅表面の粗化方法および配線基板の製造方法 | |
JP2008144187A (ja) | 無電解金めっき浴、無電解金めっき方法及び電子部品 | |
JP2018537854A (ja) | 銅エッチング用組成物及び過酸化水素系金属エッチング用組成物 | |
TWI431150B (zh) | 鋁或鋁合金之表面處理方法 | |
CN114592191A (zh) | 蚀刻液、蚀刻方法及铟镓锌氧化物半导体器件 | |
JP2013060634A (ja) | エッチング液 | |
TW202314042A (zh) | 銅蝕刻液及使用該銅蝕刻液的基板處理方法 | |
JP2002105672A (ja) | 銅防食剤及び防食方法 | |
KR20230014625A (ko) | 티타늄계 금속막용 식각액 조성물 | |
KR20210075151A (ko) | 표면 처리액 및 니켈 함유 재료의 표면 처리 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200880121508.X Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 08864783 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2009547087 Country of ref document: JP Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12010501361 Country of ref document: PH |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12808903 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2008864783 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 20107016184 Country of ref document: KR Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: PI 2010002841 Country of ref document: MY |