KR20070061344A - 연마 선택비 조절제 및 이를 함유한 cmp 슬러리 - Google Patents
연마 선택비 조절제 및 이를 함유한 cmp 슬러리 Download PDFInfo
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- KR20070061344A KR20070061344A KR1020060107117A KR20060107117A KR20070061344A KR 20070061344 A KR20070061344 A KR 20070061344A KR 1020060107117 A KR1020060107117 A KR 1020060107117A KR 20060107117 A KR20060107117 A KR 20060107117A KR 20070061344 A KR20070061344 A KR 20070061344A
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- acid
- selectivity
- weight
- polishing
- graft
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- 239000002002 slurry Substances 0.000 title claims abstract description 75
- 238000005498 polishing Methods 0.000 title claims abstract description 65
- 239000000126 substance Substances 0.000 title claims abstract description 9
- 239000002671 adjuvant Substances 0.000 title abstract 5
- 239000002253 acid Substances 0.000 claims abstract description 102
- 239000002245 particle Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 150000001875 compounds Chemical class 0.000 claims abstract description 14
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 12
- 239000011737 fluorine Substances 0.000 claims abstract description 12
- 229920000642 polymer Polymers 0.000 claims description 57
- 239000000203 mixture Substances 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 32
- 239000002801 charged material Substances 0.000 claims description 25
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 239000000178 monomer Substances 0.000 claims description 18
- 229920000578 graft copolymer Polymers 0.000 claims description 15
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 10
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 10
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 9
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 8
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 7
- -1 Ammonium Tetrafluoroborate Chemical compound 0.000 claims description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- 238000006116 polymerization reaction Methods 0.000 claims description 6
- 150000007513 acids Chemical class 0.000 claims description 5
- 239000000908 ammonium hydroxide Substances 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 5
- 229910017855 NH 4 F Inorganic materials 0.000 claims description 4
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 4
- 150000002222 fluorine compounds Chemical class 0.000 claims description 4
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 4
- 125000005702 oxyalkylene group Chemical group 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 3
- 230000000996 additive effect Effects 0.000 claims description 3
- 125000000524 functional group Chemical group 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- 125000000542 sulfonic acid group Chemical group 0.000 claims description 3
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 claims description 2
- DDFHBQSCUXNBSA-UHFFFAOYSA-N 5-(5-carboxythiophen-2-yl)thiophene-2-carboxylic acid Chemical compound S1C(C(=O)O)=CC=C1C1=CC=C(C(O)=O)S1 DDFHBQSCUXNBSA-UHFFFAOYSA-N 0.000 claims description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- KVBCYCWRDBDGBG-UHFFFAOYSA-N azane;dihydrofluoride Chemical compound [NH4+].F.[F-] KVBCYCWRDBDGBG-UHFFFAOYSA-N 0.000 claims description 2
- 125000004432 carbon atom Chemical group C* 0.000 claims description 2
- 238000007334 copolymerization reaction Methods 0.000 claims description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- 239000011976 maleic acid Substances 0.000 claims description 2
- MOVBJUGHBJJKOW-UHFFFAOYSA-N methyl 2-amino-5-methoxybenzoate Chemical compound COC(=O)C1=CC(OC)=CC=C1N MOVBJUGHBJJKOW-UHFFFAOYSA-N 0.000 claims description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 claims description 2
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 claims description 2
- LXPCOISGJFXEJE-UHFFFAOYSA-N oxifentorex Chemical compound C=1C=CC=CC=1C[N+](C)([O-])C(C)CC1=CC=CC=C1 LXPCOISGJFXEJE-UHFFFAOYSA-N 0.000 claims description 2
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 claims description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 claims description 2
- QSUJAUYJBJRLKV-UHFFFAOYSA-M tetraethylazanium;fluoride Chemical compound [F-].CC[N+](CC)(CC)CC QSUJAUYJBJRLKV-UHFFFAOYSA-M 0.000 claims description 2
- GTDKXDWWMOMSFL-UHFFFAOYSA-M tetramethylazanium;fluoride Chemical compound [F-].C[N+](C)(C)C GTDKXDWWMOMSFL-UHFFFAOYSA-M 0.000 claims description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 2
- PTMFUWGXPRYYMC-UHFFFAOYSA-N triethylazanium;formate Chemical compound OC=O.CCN(CC)CC PTMFUWGXPRYYMC-UHFFFAOYSA-N 0.000 claims description 2
- 239000003607 modifier Substances 0.000 claims 6
- RILZRCJGXSFXNE-UHFFFAOYSA-N 2-[4-(trifluoromethoxy)phenyl]ethanol Chemical compound OCCC1=CC=C(OC(F)(F)F)C=C1 RILZRCJGXSFXNE-UHFFFAOYSA-N 0.000 claims 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 25
- 229910052814 silicon oxide Inorganic materials 0.000 abstract description 23
- 229910052581 Si3N4 Inorganic materials 0.000 abstract description 16
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 abstract description 16
- 239000010410 layer Substances 0.000 description 21
- 235000012431 wafers Nutrition 0.000 description 19
- 230000008569 process Effects 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 13
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 12
- 150000003839 salts Chemical class 0.000 description 9
- 239000004065 semiconductor Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 238000001179 sorption measurement Methods 0.000 description 8
- 230000002776 aggregation Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000002360 preparation method Methods 0.000 description 6
- 235000011114 ammonium hydroxide Nutrition 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 238000005054 agglomeration Methods 0.000 description 4
- 150000001450 anions Chemical class 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 3
- 238000004220 aggregation Methods 0.000 description 3
- LDDQLRUQCUTJBB-UHFFFAOYSA-N ammonium fluoride Chemical compound [NH4+].[F-] LDDQLRUQCUTJBB-UHFFFAOYSA-N 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 3
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 239000012986 chain transfer agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002612 dispersion medium Substances 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 238000005227 gel permeation chromatography Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004377 microelectronic Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- VDZOOKBUILJEDG-UHFFFAOYSA-M tetrabutylammonium hydroxide Chemical compound [OH-].CCCC[N+](CCCC)(CCCC)CCCC VDZOOKBUILJEDG-UHFFFAOYSA-M 0.000 description 2
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- 241000293849 Cordylanthus Species 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000002221 fluorine Chemical class 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000012066 reaction slurry Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 229940073455 tetraethylammonium hydroxide Drugs 0.000 description 1
- LRGJRHZIDJQFCL-UHFFFAOYSA-M tetraethylazanium;hydroxide Chemical compound [OH-].CC[N+](CC)(CC)CC LRGJRHZIDJQFCL-UHFFFAOYSA-M 0.000 description 1
- LPSKDVINWQNWFE-UHFFFAOYSA-M tetrapropylazanium;hydroxide Chemical compound [OH-].CCC[N+](CCC)(CCC)CCC LPSKDVINWQNWFE-UHFFFAOYSA-M 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G1/00—Polishing compositions
- C09G1/02—Polishing compositions containing abrasives or grinding agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1409—Abrasive particles per se
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1454—Abrasive powders, suspensions and pastes for polishing
- C09K3/1463—Aqueous liquid suspensions
-
- 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
- H01L21/3105—After-treatment
- H01L21/31051—Planarisation of the insulating layers
- H01L21/31053—Planarisation of the insulating layers involving a dielectric removal step
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
Description
구분 | 실시예 1 | 실시예 2 | 실시예 3 | 실시예 4 |
상대분자량 | 24166 | 18932 | 15860 | 14944 |
분자량분포(PDI) | 1.76 | 1.69 | 1.63 | 1.60 |
고형분량(중량%) | 40.72 | 38.59 | 42.77 | 42.90 |
Pad | ICI400(Rodel, USA) |
웨이퍼 두께 측정 | Nanospec6100(Nanometerics, USA) |
Head speed | 90 rpm |
Spindle speed | 90 rpm |
Down force | 4 psi |
Back pressure | 0 psi |
슬러리 공급량 | 100 mL/min |
구분 | 응집입도 폭 (△㎛) | 점도 폭 (△cP) | 산화막 연마율 (Å/min) | WIWNU (%) | 질화막 연마율 (Å/min) | 선택비 |
실시예 1 | 0.8 | 0.02 | 3851 | 8.5 | 55 | 70 |
실시예 2 | 0.9 | 0.03 | 4115 | 4.28 | 64 | 64 |
실시예 3 | 1.1 | 0.05 | 4356 | 2.27 | 66 | 66 |
실시예 4 | 1.1 | 0.06 | 4301 | 3.97 | 67 | 64 |
실시예 5 | 1.3 | 0.09 | 4255 | 5.25 | 62 | 68 |
실시예 6 | 0.3 | 0.02 | 4910 | 4.47 | 70 | 70 |
실시예 7 | 0.6 | 0.03 | 4200 | 6.76 | 71 | 57 |
실시예 8 | 0.5 | 0.02 | 4460 | 7.43 | 74 | 63 |
비교예 1 | 1.2 | 0.12 | 3604 | 11.22 | 56 | 67 |
비교예 2 | 1.5 | 0.16 | 3940 | 5.35 | 60 | 67 |
비교예 3 | 1.2 | 0.11 | 4233 | 4.89 | 65 | 60 |
비교예 4 | 1.3 | 0.12 | 4330 | 3.28 | 66 | 62 |
비교예 5 | 1.5 | 0.16 | 4200 | 6.66 | 62 | 67 |
비교예 6 | 0.5 | 0.08 | 4910 | 2.27 | 70 | 70 |
비교예 7 | 1.0 | 0.08 | 4200 | 6.76 | 74 | 57 |
비교예 8 | 0.8 | 0.06 | 4460 | 7.43 | 71 | 63 |
[주] WIWNU(Within Wafer Non-Uniformity) - 연마 후 웨이퍼의 두께 편차(S.D)를 평균두께로 나누어 준 값, WIWNU가 낮을수록 평탄도가 좋음. |
Claims (19)
- 양전하를 띠는 재료와 음전하를 띠는 재료를 동시에 연마시 사용되는 선택비 조절제로서,a) 양전하를 띠는 재료에 흡착하여 음전하를 띠는 재료에 대한 연마 선택성을 높이는 중합체산;b) 염기성 물질; 및c) 불소계 화합물을 포함하는 것이 특징인 선택비 조절제.
- 제1항에 있어서, 상기 중합체산은중량평균분자량이 2,000 내지 50,000인 선형의 중합체산, 중량평균분자량이 1,000 내지 20,000이고 주쇄 및 측쇄로 구성된 그라프트 형태(graft-type)의 중합체산, 또는 이들의 혼합물인 것이 특징인 선택비 조절제.
- 제2항에 있어서, 상기 선형의 중합체산은 카르복실기를 포함하는 화합물인 것이 특징인 선택비 조절제.
- 제3항에 있어서, 상기 카르복실기는 아크릴산, 메타아크릴산, 이타코닉산, 및 말레익산으로 이루어지는 군으로부터 1 종 이상 선택되는 것이 특징인 선택비 조절제.
- 제2항에 있어서, 상기 그라프트형 중합체산에서 측쇄의 길이는 분자량이 500 내지 2,000이고, 주쇄의 길이는 분자량이 500 내지 15,000인 것이 특징인 선택비 조절제.
- 제2항에 있어서, 상기 그라프트형의 중합체산은 측쇄로 수산화기, 카르복실기, 및 술폰산기로 구성된 군에서 1종이상 선택된 작용기를 함유하는 에틸렌성 불포화 단량체의 중합 또는 공중합으로부터 유래된 매크로 단위체(macro-unit) 및 주쇄로 카르복실기 함유 에틸렌성 불포화 단량체로부터 유래된 단위체(unit)를 포함하는 것이 특징인 선택비 조절제.
- 제7항에 있어서, 상기 알콕시폴리알킬렌글리콜모노(메타)아크릴산 에스테르 단량체가 중합체산 내 10 내지 50 중량%로 함유되는 것이 특징인 선택비 조절제.
- 제6항에 있어서, 상기 그라프트형의 중합체산의 주쇄에 존재하는 카르복실기 함유 에틸렌성 불포화 단량체로부터 유래된 단위체는 메타크릴산 또는 아크릴산으로부터 유래된 것이 특징인 선택비 조절제.
- 제6항에 있어서, 상기 그라프트형의 중합체산의 주쇄에 존재하는 카르복실기 함유 에틸렌성 불포화 단량체로부터 유래된 단위체는 총 주쇄성분에 대하여 65 중량부 이상 100중량부 이하로 포함되어 있는 것이 특징인 선택비 조절제.
- 제1항에 있어서, 상기 염기성 물질은 수산화암모늄 또는 염기성 아민인 것이 특징인 선택비 조절제.
- 제1항에 있어서, pH가 4.5 내지 8.8인 것이 특징인 선택비 조절제.
- 제1항에 있어서, 상기 불소계 화합물은 불산(HF), 포타슘 플루오라이드(KF), 소듐 플루오라이드(NaF), 플루오로실리식엑시드(H2SiF6), 플루오로보릭엑시드(HBF4), 불화암모늄(NH4F), 암모늄헥사플루오로실리케이트((NH4)2SiF6), 암모늄테트라플루오로보레이트(NH4BF4), 포타슘 테트라플루오로보레이트(KBF4), 암모늄 히드로겐디플루오라이드(NH4HF2), 테트라에틸불화암모늄(TEAF, (C2H5)4NFㅇxH2O), 및 테트라메틸불화암모늄(TMAF, (CH3)4NF)으로 구성된 군에서 1 종 이상 선택된 것이 특징인 선택비 조절제.
- 제1항에 있어서, 상기 불소계 화합물은 상기 중합체산 100 중량부에 대하여 0.01 내지 5.0 중량부로 포함되는 것이 특징인 선택비 조절제.
- 제1항 내지 제14항 중 어느 한 항에 있어서, CMP(chemical mechanical polishing) 슬러리용 첨가제로 사용하는 것이 특징인 선택비 조절제.
- a) 제1항 내지 제14항 중 어느 한 항에 기재된 선택비 조절제;b) 연마 입자; 및c) 물을 포함하는 CMP 슬러리.
- 제16항에 있어서, 선택비 조절제 0.1 내지 10 중량%; 연마입자 0.1 내지 10 중량%를 함유하고, 물은 조성물 총 100중량%를 맞추는 함량으로 포함되어 있는 것이 특징인 CMP 슬러리.
- 제16항에 있어서, 연마입자는 산화세륨인 것이 특징인 CMP 슬러리.
- 제16항에 기재된 CMP 슬러리를 사용한 얕은 트랜치 소자 분리(shallow trench isolation, STI) 방법.
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TW095145383A TWI355372B (en) | 2005-12-08 | 2006-12-06 | Adjuvant for controlling polishing selectivity and |
JP2008544262A JP4851536B2 (ja) | 2005-12-08 | 2006-12-08 | 研磨選択度調節補助剤及びこれを含有するcmpスラリー |
US12/086,155 US8147711B2 (en) | 2005-12-08 | 2006-12-08 | Adjuvant for controlling polishing selectivity and chemical mechanical polishing slurry |
CN2006800462288A CN101326256B (zh) | 2005-12-08 | 2006-12-08 | 用于控制抛光选择性的辅助剂以及包含该辅助剂的化学机械抛光浆料 |
PCT/KR2006/005317 WO2007067003A1 (en) | 2005-12-08 | 2006-12-08 | Adjuvant for controlling polishing selectivity and chemical mechanical polishing slurry comprising the same |
EP06824023A EP1957600B1 (en) | 2005-12-08 | 2006-12-08 | Adjuvant for controlling polishing selectivity and chemical mechanical polishing slurry comprising the same |
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KR100894985B1 (ko) * | 2007-06-29 | 2009-04-24 | 삼성전자주식회사 | 금속 연마용 슬러리 조성물, 이를 이용한 금속 대상체의연마 방법 및 금속 배선의 형성 방법 |
KR20180052641A (ko) * | 2015-09-09 | 2018-05-18 | 히타치가세이가부시끼가이샤 | 연마액, 연마액 세트 및 기체의 연마 방법 |
KR20200063260A (ko) * | 2017-10-25 | 2020-06-04 | 세인트-고바인 세라믹스 앤드 플라스틱스, 인크. | 재료 제거 공정을 위한 조성물과 그 조성 방법 |
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US20090267020A1 (en) | 2009-10-29 |
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JP2009518852A (ja) | 2009-05-07 |
EP1957600A1 (en) | 2008-08-20 |
KR100786948B1 (ko) | 2007-12-17 |
CN101326256B (zh) | 2012-01-11 |
JP4851536B2 (ja) | 2012-01-11 |
WO2007067003A1 (en) | 2007-06-14 |
TWI355372B (en) | 2012-01-01 |
EP1957600A4 (en) | 2010-04-28 |
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