KR101105485B1 - 관통전극형 채움 장치 및 방법 - Google Patents
관통전극형 채움 장치 및 방법 Download PDFInfo
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- KR101105485B1 KR101105485B1 KR1020107026766A KR20107026766A KR101105485B1 KR 101105485 B1 KR101105485 B1 KR 101105485B1 KR 1020107026766 A KR1020107026766 A KR 1020107026766A KR 20107026766 A KR20107026766 A KR 20107026766A KR 101105485 B1 KR101105485 B1 KR 101105485B1
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- South Korea
- Prior art keywords
- copper
- plating
- tsv
- electrode
- concentration
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 70
- 230000008569 process Effects 0.000 title abstract description 24
- 239000010703 silicon Substances 0.000 title description 13
- 229910052710 silicon Inorganic materials 0.000 title description 13
- 238000011049 filling Methods 0.000 title description 8
- 239000010949 copper Substances 0.000 claims abstract description 99
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 92
- 229910052802 copper Inorganic materials 0.000 claims abstract description 91
- 239000004065 semiconductor Substances 0.000 claims abstract description 14
- 238000007747 plating Methods 0.000 claims description 201
- 239000007788 liquid Substances 0.000 claims description 70
- 239000000243 solution Substances 0.000 claims description 64
- 238000000151 deposition Methods 0.000 claims description 62
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 claims description 59
- 229910001431 copper ion Inorganic materials 0.000 claims description 59
- 230000008021 deposition Effects 0.000 claims description 51
- 238000012545 processing Methods 0.000 claims description 25
- 239000007800 oxidant agent Substances 0.000 claims description 22
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 19
- -1 iron ions Chemical class 0.000 claims description 17
- 230000003647 oxidation Effects 0.000 claims description 15
- 238000007254 oxidation reaction Methods 0.000 claims description 15
- 230000001590 oxidative effect Effects 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 12
- 238000011282 treatment Methods 0.000 claims description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 238000012546 transfer Methods 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 239000000460 chlorine Substances 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- 239000011800 void material Substances 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000009713 electroplating Methods 0.000 abstract description 52
- 235000012431 wafers Nutrition 0.000 description 74
- 239000000126 substance Substances 0.000 description 19
- 239000000758 substrate Substances 0.000 description 19
- 238000009792 diffusion process Methods 0.000 description 18
- 150000002500 ions Chemical class 0.000 description 14
- 230000004888 barrier function Effects 0.000 description 13
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 239000000654 additive Substances 0.000 description 9
- 239000012528 membrane Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 239000003792 electrolyte Substances 0.000 description 8
- 229910000679 solder Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 230000006870 function Effects 0.000 description 7
- 239000003112 inhibitor Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 229910021645 metal ion Inorganic materials 0.000 description 6
- 238000005240 physical vapour deposition Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 5
- 229910000365 copper sulfate Inorganic materials 0.000 description 5
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 3
- 229920000557 Nafion® Polymers 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 238000013019 agitation Methods 0.000 description 3
- 238000005341 cation exchange Methods 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- 230000037427 ion transport Effects 0.000 description 3
- 238000001020 plasma etching Methods 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 229910000978 Pb alloy Inorganic materials 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 238000000231 atomic layer deposition Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 150000001879 copper Chemical class 0.000 description 2
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 2
- BSXVKCJAIJZTAV-UHFFFAOYSA-L copper;methanesulfonate Chemical compound [Cu+2].CS([O-])(=O)=O.CS([O-])(=O)=O BSXVKCJAIJZTAV-UHFFFAOYSA-L 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 150000002019 disulfides Chemical class 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- HHLFWLYXYJOTON-UHFFFAOYSA-N glyoxylic acid Chemical compound OC(=O)C=O HHLFWLYXYJOTON-UHFFFAOYSA-N 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RPAJSBKBKSSMLJ-DFWYDOINSA-N (2s)-2-aminopentanedioic acid;hydrochloride Chemical class Cl.OC(=O)[C@@H](N)CCC(O)=O RPAJSBKBKSSMLJ-DFWYDOINSA-N 0.000 description 1
- DOBUSJIVSSJEDA-UHFFFAOYSA-L 1,3-dioxa-2$l^{6}-thia-4-mercuracyclobutane 2,2-dioxide Chemical compound [Hg+2].[O-]S([O-])(=O)=O DOBUSJIVSSJEDA-UHFFFAOYSA-L 0.000 description 1
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- OCUCCJIRFHNWBP-IYEMJOQQSA-L Copper gluconate Chemical compound [Cu+2].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O OCUCCJIRFHNWBP-IYEMJOQQSA-L 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 229910001128 Sn alloy Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- RAOSIAYCXKBGFE-UHFFFAOYSA-K [Cu+3].[O-]P([O-])([O-])=O Chemical compound [Cu+3].[O-]P([O-])([O-])=O RAOSIAYCXKBGFE-UHFFFAOYSA-K 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- GJYJYFHBOBUTBY-UHFFFAOYSA-N alpha-camphorene Chemical compound CC(C)=CCCC(=C)C1CCC(CCC=C(C)C)=CC1 GJYJYFHBOBUTBY-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- RJTANRZEWTUVMA-UHFFFAOYSA-N boron;n-methylmethanamine Chemical compound [B].CNC RJTANRZEWTUVMA-UHFFFAOYSA-N 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 239000008364 bulk solution Substances 0.000 description 1
- GSJWYIDMIRQHMV-UHFFFAOYSA-N butanoyl fluoride Chemical compound CCCC(F)=O GSJWYIDMIRQHMV-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- ZMIGMASIKSOYAM-UHFFFAOYSA-N cerium Chemical compound [Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce][Ce] ZMIGMASIKSOYAM-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000003486 chemical etching Methods 0.000 description 1
- 239000013626 chemical specie Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229940108925 copper gluconate Drugs 0.000 description 1
- XNEQAVYOCNWYNZ-UHFFFAOYSA-L copper;dinitrite Chemical compound [Cu+2].[O-]N=O.[O-]N=O XNEQAVYOCNWYNZ-UHFFFAOYSA-L 0.000 description 1
- VGQHONKCYQCCHO-UHFFFAOYSA-N copper;propane-1-sulfonic acid Chemical compound [Cu].CCCS(O)(=O)=O VGQHONKCYQCCHO-UHFFFAOYSA-N 0.000 description 1
- 238000002484 cyclic voltammetry Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- PEVJCYPAFCUXEZ-UHFFFAOYSA-J dicopper;phosphonato phosphate Chemical compound [Cu+2].[Cu+2].[O-]P([O-])(=O)OP([O-])([O-])=O PEVJCYPAFCUXEZ-UHFFFAOYSA-J 0.000 description 1
- ZOMNIUBKTOKEHS-UHFFFAOYSA-L dimercury dichloride Chemical class Cl[Hg][Hg]Cl ZOMNIUBKTOKEHS-UHFFFAOYSA-L 0.000 description 1
- WIYCQLLGDNXIBA-UHFFFAOYSA-L disodium;3-(3-sulfonatopropyldisulfanyl)propane-1-sulfonate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)CCCSSCCCS([O-])(=O)=O WIYCQLLGDNXIBA-UHFFFAOYSA-L 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 238000011067 equilibration Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000003014 ion exchange membrane Substances 0.000 description 1
- 229920000554 ionomer Polymers 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910000370 mercury sulfate Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 125000001174 sulfone group Chemical group 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 150000003568 thioethers Chemical class 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L25/00—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof
- H01L25/50—Multistep manufacturing processes of assemblies consisting of devices, each device being of a type provided for in group H01L27/00 or H01L29/00
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
- C25D17/001—Apparatus specially adapted for electrolytic coating of wafers, e.g. semiconductors or solar cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/12—Process control or regulation
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/38—Electroplating: Baths therefor from solutions of copper
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/12—Semiconductors
- C25D7/123—Semiconductors first coated with a seed layer or a conductive layer
-
- 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
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/288—Deposition of conductive or insulating materials for electrodes conducting electric current from a liquid, e.g. electrolytic deposition
- H01L21/2885—Deposition of conductive or insulating materials for electrodes conducting electric current from a liquid, e.g. electrolytic deposition using an external electrical current, i.e. electro-deposition
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76898—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics formed through a semiconductor substrate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/02—Bonding areas; Manufacturing methods related thereto
- H01L2224/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
- H01L2224/05—Structure, shape, material or disposition of the bonding areas prior to the connecting process of an individual bonding area
- H01L2224/0554—External layer
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/02—Bonding areas; Manufacturing methods related thereto
- H01L2224/04—Structure, shape, material or disposition of the bonding areas prior to the connecting process
- H01L2224/05—Structure, shape, material or disposition of the bonding areas prior to the connecting process of an individual bonding area
- H01L2224/0554—External layer
- H01L2224/05573—Single external layer
-
- H—ELECTRICITY
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Abstract
Description
도 2는 본 발명에 따른 TSV 처리에 대한 여러 동작을 설명하는 처리 흐름도.
도 3은 본 발명의 일 실시 예에 따른 전기 도금 장치를 개략적으로 도시한 도면.
도 4는 본 발명의 일 실시에 따른 반도체 처리 장치의 그래픽 도면.
도 5A는 대표적인 전기 도금 처리를 위한 TSV 바닥으로부터 거리 함수로서 깊이가 200 마이크로 미터인 TSV 내부 구리 이온 농도 프로파일에 대한 그래프.
도 5B는 본 발명 일 실시에 따른 TSV 바닥으로부터 거리 함수로서 깊이가 200 마이크로 미터인 TSV 내부 구리 이온 농도 프로파일에 대한 그래프.
도 6은 본 발명의 일 실시 예에 따른 도금액 두 온도에서 TSV 바닥으로부터 거리 함수로서 깊이가 200 마이크로 미터인 TSV 내부 두 전류 밀도 프로파일에 대한 그래프.
도 7은 본 발명의 일 실시 예에 따른 전기 도금 처리를 통해 네 개의 다른 주기에서 깊이가 25 마이크로 미터인 TSV 구멍 내부 구리 증착을 도시한 도면.
도 8은 18분의 도금 시간을 사용하여 구리로 10 마이크로 미터 직경 50 마이크로 미터 깊이 TSV들의 채움을 도시한 비교 도면.
Claims (35)
- 두 개 이상의 집적 회로를 연결시키기 위한 관통 전극형(TSV)을 도금하기 위한 방법으로서, 관통전극형이 3 마이크로미터 이상의 직경 그리고 20 마이크로미터 이상의 깊이를 가지며, 상기 방법이
(a) (i) 2 내지 6의 pH, 그리고 (ii) 리터 당 40 그램 이상의 농도 구리 이온을 갖는 도금액으로 관통전극형 구멍을 갖는 구조를 접촉하며; 그리고
(b) 상기 구조를 접촉하는 동안, 보이드(void)가 없도록 20분 이하의 시간에 관통전극형을 완전히 채우도록 관통전극형 구멍 내로 구리를 도금함을 포함함을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법 - 제 1 항에 있어서, 상기 도금액 내 구리 이온의 농도가 리터 당 40그램 내지 200 그램 사이임을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 1 항에 있어서, 상기 도금액이 산화제를 더욱 포함하며, 상기 산화제가 전류가 웨이퍼에 가해지지 않는 때 200 내지 3000Å/분 속도로 웨이퍼 필드에서 도금된 구리를 산화시킴을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 1항에 있어서, 상기 구리 이온이 상기 관통전극형 구멍 내로 구리를 도금시키는 동안 도금액 내 0.2 이상의 이송수(transference number)를 가짐을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 1항에 있어서, 상기 도금액이 10 ppm 이하 농도의 염화 이온을 포함함을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 구리를 증착하기 위한 반도체 처리 장치로서,
pH 가 2내지 6인 도금액 소스, 그리고 리터 당 50 그램 이상 농도의 구리 이온; 그리고
한 세트의 지시를 실행하기 위한 제어기를 포함하며;
상기 한 세트의 지시가;
(i) 도금액으로 관통전극형 구멍을 갖는 구조를 접촉하고; 그리고
(ii) 상기 구조를 접촉하는 동안, 상기 관통전극형 구멍 내로 구리를 도금하여, 20분 이하의 시간 동안 보이드(void)가 완전히 없도록 상기 관통전극형을 완전히 채우도록 함을 특징으로 하는 반도체 처리 장치. - 제 6항에 있어서, 한 가열기 그리고 이에 연결된 한 인터페이스를 더욱 포함하여, 상기 관통전극형 구멍 내로 구리를 도금하는 동안 적어도 그 일부의 시간 동안 40℃ 내지 75℃ 사이의 도금액 온도를 유지시키도록 함을 특징으로 하는 반도체 처리 장치.
- 제 6항에 있어서, 상기 도금액 내 구리 이온의 농도가 리터 당 40 그램 내지 리터 당 200 그램임을 특징으로 하는 반도체 처리 장치.
- 제 6항에 있어서, 전류가 웨이퍼로 가해지지 않는 때 상기 도금액이 200 내지3000Å/분 속도로 웨이퍼 필드에서 도금된 구리를 산화시킴을 특징으로 하는 반도체 처리 장치.
- 제 6항에 있어서, 상기 도금액이 10 ppm 이하 농도의 염화 이온을 포함함을 특징으로 하는 반도체 처리 장치.
- 두 개 이상의 집적 회로를 연결시키기 위해 관통 전극형(TSV)을 도금하기 위한 방법으로서, 관통전극형이 3 마이크로미터 이상의 직경 그리고 20 마이크로미터 이상의 깊이를 가지며, 상기 방법이;
리터 당 40 그램 이상 농도의 구리 이온을 가지며, 2ppm 이하 농도의 염화 이온을 갖는 도금액으로 관통전극형 구멍을 갖는 구조를 접촉하며; 그리고
상기 구조를 접촉하는 동안, 보이드(void)가 없도록 관통전극형 구멍을 완전히 채우도록 관통전극형 구멍 내로 구리를 도금하며,
상기 도금 중 증착 속도가 상기 관통전극형 구멍 개구부 가까이에서 보다 관통전극형 구멍 바닥에서 더욱 높음을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법. - 제 11항에 있어서, 상기 관통전극형이 20분 이하동안 완전히 채워짐을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 11항에 있어서, 상기 관통전극형이 3 내지 100 마이크로미터의 직경 그리고 20 내지 200마이크로미터의 깊이를 가짐을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 11항에 있어서, 상기 관통전극형이 3:1 내지 10:1 의 종횡비를 가짐을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 11항에 있어서, 상기 도금액 내 구리 이온 농도가 리터 당 40 내지 200그램임을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 11항에 있어서, 상기 도금액이 산화제를 더욱 포함하며, 상기 산화제가 전류가 웨이퍼에 가해지지 않는 때 200 내지 3000Å/분 속도로 웨이퍼 필드에서 도금된 구리를 산화시킴을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 16항에 있어서, 상기 산화제가 과산화 수소 용액을 포함함을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 17항에 있어서, 상기 과산화수소 용액이 중량비 30% 과산화수소를 포함하며, 도금액 내 상기 과산화수소 농도가 0.0025 ml/L 내지50 ml/L 임을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 16항에 있어서, 상기 산화제가 산소 원소(elemental oxygen)를 포함함을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 16항에 있어서, 상기 산화제가 철 이온을 포함함을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 20항에 있어서, 각기 다른 산화 상태에서 철 이온의 농도가 평형상태에 있으며, 상기 평형상태가 불활성 양극에서의 반응에 의해 유지됨을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 16항에 있어서, 상기 도금액이 환원제를 더욱 포함하고, 상기 환원제가 관통전극형 구멍 내에서 농도 경사도를 가지며, 상기 환원제가 상기 구리의 산화에 영향을 미침을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 11항에 있어서, 상기 구리 이온이 상기 관통전극형 구멍 내로 구리를 도금시키는 동안 도금액 내 0.2 이상의 이송수(transference number)를 가짐을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 11항에 있어서, 상기 관통전극형 구멍 내로 구리를 도금시키는 동안 적어도 그 일부 시간동안에는 상기 도금액이 실온 이상으로 유지됨을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 11항에 있어서, 구리 도금하는 동안 다수의 관통전극형 구멍들 사이 필드 영역으로 어떠한 구리 증착도 발생되지 않음을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 11항에 있어서, 상기 도금액에는 염소 이온이 없음을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 11항에 있어서, 상기 도금 처리 이전에 상기 구조로 증착된 씨드 층(seed layer)을 사전 처리함을 더욱 포함함을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 27항에 있어서, 상기 사전 처리가 수용액, 희석 산 용액, 희석 염기 용액, 용액을 포함하는 계면 활성제, 그리고 도금액으로 구성된 그룹으로부터 선택된 하나 또는 둘 이상의 용액을 사용하여 수행됨을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 제 11항에 있어서, 상기 도금액의 pH가 2 내지 6사이임을 특징으로 하는 관통 전극형(TSV)을 도금하기 위한 방법.
- 두 개 이상의 집적 회로를 연결시키기 위해 관통 전극형(TSV)내에 구리를 증착하기 위한 구리 도금액으로서,
관통전극형이 3 마이크로미터 이상의 직경 그리고 20 마이크로미터 이상의 깊이를 가지며, 상기 구리 도금액이
농도가 리터 당 60 그램 내지 100 그램 사이인 구리 이온;
황산; 그리고
2 ppm 이하 농도의 염화 이온을 포함함을 특징으로 하는 관통 전극형(TSV)내에 구리를 증착하기 위한 구리 도금액.
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TWI474436B (zh) | 2015-02-21 |
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US20100200412A1 (en) | 2010-08-12 |
US20100041226A1 (en) | 2010-02-18 |
US8722539B2 (en) | 2014-05-13 |
KR20110022571A (ko) | 2011-03-07 |
WO2010022009A2 (en) | 2010-02-25 |
US20120031768A1 (en) | 2012-02-09 |
US8043967B2 (en) | 2011-10-25 |
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