WO2004100242A1 - Cmpプロセス用研磨液及び研磨方法 - Google Patents
Cmpプロセス用研磨液及び研磨方法 Download PDFInfo
- Publication number
- WO2004100242A1 WO2004100242A1 PCT/JP2004/006027 JP2004006027W WO2004100242A1 WO 2004100242 A1 WO2004100242 A1 WO 2004100242A1 JP 2004006027 W JP2004006027 W JP 2004006027W WO 2004100242 A1 WO2004100242 A1 WO 2004100242A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polishing
- polishing liquid
- cmp process
- weight
- liquid
- Prior art date
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- 238000005498 polishing Methods 0.000 title claims abstract description 296
- 239000007788 liquid Substances 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 102
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000000654 additive Substances 0.000 claims abstract description 15
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- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 4
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- 239000000377 silicon dioxide Substances 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 7
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- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims description 5
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
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- ARTAMLDGAGWEDM-UHFFFAOYSA-N 1-(methoxymethyl)-2,3-dimethyl-1,3-diazinane Chemical compound COCN1CCCN(C)C1C ARTAMLDGAGWEDM-UHFFFAOYSA-N 0.000 description 1
- ZERMIGXMJKWVNX-UHFFFAOYSA-N 1-(methoxymethyl)-N,N,3-trimethyl-1,3-diazinan-2-amine Chemical compound COCN1CCCN(C)C1N(C)C ZERMIGXMJKWVNX-UHFFFAOYSA-N 0.000 description 1
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- KODLUXHSIZOKTG-UHFFFAOYSA-N 1-aminobutan-2-ol Chemical compound CCC(O)CN KODLUXHSIZOKTG-UHFFFAOYSA-N 0.000 description 1
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- 125000002768 hydroxyalkyl group Chemical group 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- JJWLVOIRVHMVIS-UHFFFAOYSA-N isopropylamine Chemical compound CC(C)N JJWLVOIRVHMVIS-UHFFFAOYSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 150000002602 lanthanoids Chemical class 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000001788 mono and diglycerides of fatty acids Substances 0.000 description 1
- KMBPCQSCMCEPMU-UHFFFAOYSA-N n'-(3-aminopropyl)-n'-methylpropane-1,3-diamine Chemical compound NCCCN(C)CCCN KMBPCQSCMCEPMU-UHFFFAOYSA-N 0.000 description 1
- LSHROXHEILXKHM-UHFFFAOYSA-N n'-[2-[2-[2-(2-aminoethylamino)ethylamino]ethylamino]ethyl]ethane-1,2-diamine Chemical compound NCCNCCNCCNCCNCCN LSHROXHEILXKHM-UHFFFAOYSA-N 0.000 description 1
- OLAKSHDLGIUUET-UHFFFAOYSA-N n-anilinosulfanylaniline Chemical compound C=1C=CC=CC=1NSNC1=CC=CC=C1 OLAKSHDLGIUUET-UHFFFAOYSA-N 0.000 description 1
- DVEKCXOJTLDBFE-UHFFFAOYSA-N n-dodecyl-n,n-dimethylglycinate Chemical compound CCCCCCCCCCCC[N+](C)(C)CC([O-])=O DVEKCXOJTLDBFE-UHFFFAOYSA-N 0.000 description 1
- SHDMMLFAFLZUEV-UHFFFAOYSA-N n-methyl-1,1-diphenylmethanamine Chemical compound C=1C=CC=CC=1C(NC)C1=CC=CC=C1 SHDMMLFAFLZUEV-UHFFFAOYSA-N 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- DWKZZXMEVSSPBW-UHFFFAOYSA-N n-propylpropan-1-amine;hydrate Chemical compound [OH-].CCC[NH2+]CCC DWKZZXMEVSSPBW-UHFFFAOYSA-N 0.000 description 1
- OKBVMLGZPNDWJK-UHFFFAOYSA-N naphthalene-1,4-diamine Chemical compound C1=CC=C2C(N)=CC=C(N)C2=C1 OKBVMLGZPNDWJK-UHFFFAOYSA-N 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- HLNRBHDRGMNBEG-UHFFFAOYSA-N nitrous acid Chemical class ON=O.ON=O HLNRBHDRGMNBEG-UHFFFAOYSA-N 0.000 description 1
- 229920003986 novolac Polymers 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 1
- IOQPZZOEVPZRBK-UHFFFAOYSA-N octan-1-amine Chemical compound CCCCCCCCN IOQPZZOEVPZRBK-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 235000006408 oxalic acid Nutrition 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
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 125000000843 phenylene group Chemical group C1(=C(C=CC=C1)*)* 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- WGYKZJWCGVVSQN-UHFFFAOYSA-N propylamine Chemical group CCCN WGYKZJWCGVVSQN-UHFFFAOYSA-N 0.000 description 1
- AOHJOMMDDJHIJH-UHFFFAOYSA-N propylenediamine Chemical compound CC(N)CN AOHJOMMDDJHIJH-UHFFFAOYSA-N 0.000 description 1
- VHNQIURBCCNWDN-UHFFFAOYSA-N pyridine-2,6-diamine Chemical compound NC1=CC=CC(N)=N1 VHNQIURBCCNWDN-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 239000000344 soap Substances 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
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 235000019830 sodium polyphosphate Nutrition 0.000 description 1
- 229940074404 sodium succinate Drugs 0.000 description 1
- ZDQYSKICYIVCPN-UHFFFAOYSA-L sodium succinate (anhydrous) Chemical compound [Na+].[Na+].[O-]C(=O)CCC([O-])=O ZDQYSKICYIVCPN-UHFFFAOYSA-L 0.000 description 1
- RLJSXMVTLMHXJS-UHFFFAOYSA-M sodium;4-decylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCC1=CC=C(S([O-])(=O)=O)C=C1 RLJSXMVTLMHXJS-UHFFFAOYSA-M 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229940035044 sorbitan monolaurate Drugs 0.000 description 1
- 239000008117 stearic acid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 150000003871 sulfonates Chemical class 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- XSOKHXFFCGXDJZ-UHFFFAOYSA-N telluride(2-) Chemical compound [Te-2] XSOKHXFFCGXDJZ-UHFFFAOYSA-N 0.000 description 1
- FAGUFWYHJQFNRV-UHFFFAOYSA-N tetraethylenepentamine Chemical compound NCCNCCNCCNCCN FAGUFWYHJQFNRV-UHFFFAOYSA-N 0.000 description 1
- KWXLCDNSEHTOCB-UHFFFAOYSA-J tetrasodium;1,1-diphosphonatoethanol Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P(=O)([O-])C(O)(C)P([O-])([O-])=O KWXLCDNSEHTOCB-UHFFFAOYSA-J 0.000 description 1
- UEUXEKPTXMALOB-UHFFFAOYSA-J tetrasodium;2-[2-[bis(carboxylatomethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CN(CC([O-])=O)CCN(CC([O-])=O)CC([O-])=O UEUXEKPTXMALOB-UHFFFAOYSA-J 0.000 description 1
- 150000003536 tetrazoles Chemical class 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- VOZKAJLKRJDJLL-UHFFFAOYSA-N tolylenediamine group Chemical group CC1=C(C=C(C=C1)N)N VOZKAJLKRJDJLL-UHFFFAOYSA-N 0.000 description 1
- 125000005270 trialkylamine group Chemical group 0.000 description 1
- YFTHZRPMJXBUME-UHFFFAOYSA-N tripropylamine Chemical compound CCCN(CCC)CCC YFTHZRPMJXBUME-UHFFFAOYSA-N 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
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/02—Silicon
- C01B33/021—Preparation
- C01B33/023—Preparation by reduction of silica or free silica-containing material
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
- C11D7/20—Water-insoluble oxides
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/36—Organic compounds containing phosphorus
-
- 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
- H01L21/02002—Preparing wafers
- H01L21/02005—Preparing bulk and homogeneous wafers
- H01L21/02008—Multistep processes
- H01L21/0201—Specific process step
- H01L21/02024—Mirror polishing
-
- 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
- H01L21/02041—Cleaning
- H01L21/02043—Cleaning before device manufacture, i.e. Begin-Of-Line process
- H01L21/02052—Wet cleaning only
-
- 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 at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System 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
- H01L21/30625—With simultaneous mechanical treatment, e.g. mechanico-chemical polishing
-
- 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 at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System 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
-
- C11D2111/22—
Definitions
- the present invention relates to a polishing liquid for a CMP process. More specifically, the present invention relates to a polishing liquid for a CMP process used in the manufacture of a semiconductor element, and particularly to a step of flattening an interlayer insulating film, a step of isolating a shallow wrench element, a step of forming a filling layer in a groove of a capacitor or metal wiring, and the like. The present invention relates to a polishing liquid for a CMP process used in a magnetic head forming step and the like.
- CMP is a polishing method for removing a level difference in a pattern formed on the surface of a device wafer or the like and flattening the same, and is a mechanical polishing that combines chemical polishing and mechanical polishing. Mechanical Planarization).
- polishing does not proceed unless the polishing pressure is high, so that many scratches are left on the polished wafer, and the non-defective rate of the device wafer is remarkably reduced.
- the polishing material is agglomerated and the polishing characteristics are immediately dispersed. If the high-quality anion surfactant remains and the yield rate of the device wafer does not increase as soon as it remains, there is a problem; it is necessary to mix the two liquids of the high-polymer anion surfactant and the abrasive immediately before polishing. If the workability is low, there are problems.
- a first object of the present invention is to provide a polishing liquid for a CMP process capable of stably exhibiting excellent polishing characteristics such as flattening characteristics, low scratch characteristics, and high cleaning characteristics.
- a second object of the present invention is to provide a polishing method capable of stably exhibiting excellent polishing characteristics.
- a third object of the present invention is to provide a material polished using the above polishing liquid and polishing method.
- the present invention is the following [1] to [4].
- a polishing liquid for a CMP process comprising an abrasive, an aqueous solvent, and an additive and containing 15% by weight or more of abrasive particles having a particle diameter of 20 to 80 nm based on the weight of the polishing liquid. is there.
- a semiconductor device having the interlayer insulating film or the element isolation film having the interlayer insulating film or the element isolation film.
- the polishing liquid for the CMP process of the present invention must contain at least 15% by weight, based on the weight of the polishing liquid, of abrasive particles having a particle diameter in the range of 20 to 80 nm, preferably 30 to 70 nm. Particles containing at least 10% by weight based on the weight of the polishing liquid, and more preferably at least 5% by weight based on the weight of the polishing liquid. Things. If the particles having a particle diameter in the range of 20 to 80 nm are less than 15% by weight based on the weight of the polishing liquid, it becomes difficult to exhibit excellent flatness characteristics after polishing.
- the particle diameter in the present invention is a number-based value that is all measured by a capillary type particle size distribution analyzer.
- a particle size distribution measuring method by the capillary method for example, the particle size distribution can be measured using a particle size distribution measuring device CHDF-2000 of MA TEC APPLIED SCIENCES.
- CHDF-2000 of MA TEC APPLIED SCIENCES.
- the polishing solution to be measured is diluted 10 to 20 times with ion-exchanged water, filtered through a 0.5-micron filter, injected into a particle size distribution analyzer using an approximately 1 ml microsyringe, and then calibrated at a pressure of 3500 psi and a flow rate of 1.4 mlZ. Move the particles through a ram to separate the particles, and measure the particle size and concentration using a UV detector with a wavelength of 220 nm.
- the particle size range of the entire abrasive is preferably 1 to 250 nm, more preferably 20 10 Onm.
- Examples of a method for incorporating a large amount of particles having a particle diameter in the range of 20 to 80 nm into an abrasive include a method of producing a colloidal or fumed state by a production method such as an ion exchange method, a solution chemical reaction method, or a flame oxidation method. The power that can be applied.
- colloidal silica containing a large amount of particles having a particle diameter in the range of 20 to 80 ⁇ m by an ion exchange method or a solution chemical reaction method.
- an organic powder or an inorganic powder can be used as the material of the abrasive. They may be used alone or in combination of two or more.
- Examples of the organic powder include epoxy resin powder, urethane resin powder, vinyl resin powder, polyester, benzoguanamine resin powder, silicone resin powder, novolak resin powder, and phenol resin powder.
- the molecular weight, hardness and the like of these resin powders are not particularly limited.
- metal oxides and metal nitrides are used as the inorganic powder.
- metal oxide examples include lanthanoid metal oxides of Groups 4A, 3B, 4B, and 3A of the Long Periodic Table of the Elements, such as zirconium oxide and aluminum oxide
- metal nitride examples include metal nitrides of Groups 4A, 3B, and 4B of the periodic table of elements, and metal nitrides of lanthanoids, such as dinoreconium nitride, aluminum nitride, silicon nitride, and ceramic nitride.
- inorganic powders are more preferably metal oxides, and particularly preferably silicon dioxide.
- the form of the abrasive particles is not particularly limited. Specifically, for example, in the case of dinoreconium oxide, monoclinic, tetragonal, and amorphous or fumed (fumed zirconia) and the like; , ⁇ -, / C-alumina and fumed (fumed alumina); colloidal and fumed in the case of silicon dioxide; hexagonal and equiaxed in the case of cerium oxide
- silicon nitride there may be mentioned, for example, HI, ⁇ _, amorphous silicon nitride, and the like.
- the form is preferably fumed, especially colloidal.
- the additive in the present invention preferably includes a basic substance having a pKa at 25 ° C of 7 or more and 11 or less. More preferably, the basic substance has a pKa of 7.5 or more and 10.5 or less, particularly preferably a pKa of 8 or more and 10 or less. When the pKa at 25 ° C is 7 or more, excellent flattening properties are exhibited, and when the pKa is 11 or less, excellent detergency is exhibited.
- the addition amount is preferably 0.01 to 10% by weight, more preferably 0.05 to 5% by weight, based on the weight of the polishing liquid.
- pKa refers to the logarithmic value of the ionization constant of a basic substance in water at 25 ° C.
- Examples of the additive that is a basic substance having a pKa of 7 or more and 11 or less include, for example, ammonia and amino compounds.
- amino compound examples include the following aliphatic amines, alicyclic amines, aromatic amines, polyamide polyamines, polyether polyamines, epoxy-added polyamines, cyanoethylated polyamines
- Quaternary ammonium salts aminoanoreconore, and other amines.
- Aliphatic amines preferably having 2 to 18 carbon atoms, having 17 to 17 functional groups, and having a molecular weight of 60,500;
- C18 monoalkylamines isopropylamine, isobutylamine, etc.
- C2-12 dialkylamines dipropylamine, diisopropylamine, dibutyamine
- Noreamine diisopropylamine, dipropylammonium hydroxide mouth oxide, diisopropylammonium hydroxide mouth oxide, etc.
- trialkylamines having 3 to 16 carbon atoms triethylamine, tripropylamine, triisopropylamine, triisopropylamine) Isobutylamine, etc.
- alkylene diamines having 2 to 6 carbon atoms ethylene diamine, propylene diamine, trimethylene diamine, tetramethylene diamine, hexamethylene diamine, etc.
- polyanolylene (2 to 6 carbon atoms) polyamine diethylene triamine , Iminobispropylamine, bis (hexamethylene) triamine, triethylenetetramine, tetraethylenepentamine, pentaethylenehexamine, etc.];
- an alicyclic polyamine (preferably having 4 to 15 carbon atoms and having 2 to 3 functional groups);
- Heterocyclic polyamine preferably having 4 to 15 carbon atoms and having 2 to 3 functional groups
- Piperazine N-aminoethylpiperazine, 1,4-diaminoethylpiperazine, 1,4-bis (2-amino-2-methylpropyl) piperazine, [3,9_bis (3-aminopropyl) -2 , 4, 8, 10-tetraoxaspiro [5,5] pandecane] and the like;
- Aromatic polyamines (preferably having 27 amino groups and 6-20 carbon atoms);
- Aromatic polyamines such as 1,2_, 1,3_ and 1,4_phenylenediamine, 2,4'- and 4,4'-diphenylmethanediamine, crude diphenylmethanediamine [ Polyphenylpolymethylenepolyamine], diaminodiphenylsulfone, benzidine, thiodianiline, bis (3,4-diaminophenyl) sulfone, 2,6-diaminopyridine, m-aminobenzilaminine, triphenylinolemethane-1,4 ', 4 "_ Triamine, naphthylenediamine; [0031] Aromatic polyamines having a nucleus-substituted alkyl group (eg, an alkyl group having 14 to 14 carbon atoms such as methyl, ethyl, n- and i-propyl and butyl), for example, 2,4- and 2,6-tolylenediamine , Cru
- Aromatic polyamines having a nucleus-substituted electron-withdrawing group eg, a halogen such as Cl, Br, I, or F; an alkoxy group such as methoxy or ethoxy; a nitro group
- a nucleus-substituted electron-withdrawing group eg, a halogen such as Cl, Br, I, or F; an alkoxy group such as methoxy or ethoxy; a nitro group
- a nucleus-substituted electron-withdrawing group eg, a halogen such as Cl, Br, I, or F; an alkoxy group such as methoxy or ethoxy; a nitro group
- R ′ is an alkyl group such as a lower alkyl group such as methyl and ether]
- R ′ is an alkyl group such as a lower alkyl group such as methyl and ether
- polyether polyamine (number of amino groups; preferably 2-7);
- Hydride of cyanoethylated polyether polyol (OH number; preferably 2-7) (molecular weight 230-1 000), etc .;
- polyepoxide (B1) and monoepoxide (b) described in JP-A-2001-40331] is added to polyamines (alkylene diamine, polyalkylene polyamine, etc.) in an amount of 1 to 30 mol.
- Epoxy-added polyamines (molecular weight 230-1 000), etc .;
- Cyanoethylated polyamines cyanoethylated polyamines obtained by the addition reaction of acrylonitrile with polyamines (such as the above-mentioned aliphatic polyamines), biscyanoethyl dimethylene triamines (molecular weight 230-606), etc .;
- dihydrazides aliphatic dihydrazides having 430 carbon atoms such as succinic dihydrazide and adipic dihydrazide; aromatic dihydrazides having 1040 carbon atoms such as isophthalic dihydrazide and terephthalic dihydrazide;
- guanidines alkyl guanidines having 15 to 15 carbon atoms such as butyl danidine; cyano guanidine such as 1-cyano guanidine);
- the quaternary ammonium cations include the following.
- the anion include, but are not limited to, a halogen ion, a carboxylic acid anion, a sulfonic acid anion, and a phosphoric acid anion.
- 1,3-dimethylimidazolym 1_ethyl_3-methylimidazolium, 1_methyl_3-ethylimidazolium, 1,2,3-trimethylimidazolym, 1,2,3,4-tetra Methyl imidazolium, 1,3-dimethinole_2-ethylimidazolium, 1,2-dimethinole_3—ethylimidazolium 1-Ethynoleate 3-Methylimidazolime, 1-Methyl-3-ethylimidazolime, 1,2,3_ Triethylimidazolime, 1,2,3,4-Tetraethylimidazolime, 1 , 3_dimethyl-2-phenylimidazolime, 1,3_dimethyl-2_benzylimidazolime, 1_benzyl-2,3-dimethylimidazolime, 4_cyano_1,2,3_trimethylimidazolime,
- 1,3_Dimethinole 1,2,4- or 1,2,6-dihydropyrimidinium These are referred to as 1,3-dimethyl-2,4, (6) _dihydropyrimidinium, and the same shall apply hereinafter. Use expressions.
- Alkanolamines having 2 to 12 carbon atoms such as mono-, di- and tri-alkanolamines (monoethanolamine, monoisopropanolamine, monobutanolamine, triethanolamine, tripropanolamine, etc.); Alkyl (C1-C4) substituted [N, N-dialkylmonoalkanolamine (N, N-dimethylethanolamine, N, N-getylethanolamine, etc.), N-alkyldialkanolamine (N —Methyljetanolamine, N-butyljetanolamine, etc.)]; and quaternized products of nitrogen atoms with a quaternizing agent such as dimethyl sulfate or benzylinochloride;
- a quaternizing agent such as dimethyl sulfate or benzylinochloride
- the aqueous solvent in the present invention means a solvent containing water as an essential component, and water and a mixed solvent of water and an organic solvent can be used.
- organic solvent examples include phenolic alcohols having 13 to 13 carbon atoms (such as methanol, ethanol and isopropanol), ethers having 2 to 4 carbon atoms (such as dimethyl ether and dimethyl ether), and ketones having 3 to 6 carbon atoms (such as acetone and methyl). Isobutyl ketone and the like) and mixtures thereof are preferably used. Of these, alcohols having 13 to 13 carbon atoms (such as methanol, ethanol and isopropanol) are more preferred.
- the content of the organic solvent based on the weight of the aqueous solvent, 0.0000001 10 weight 0/0 force S preferred instrument, and more preferably ⁇ f or 0. 00001- 3 weight 0/0, especially preferred properly is 0.001 1% by weight.
- the content of the aqueous solvent is preferably 50% by weight or more, more preferably 52% by weight or more, particularly preferably 55% by weight or more, and most preferably 60% by weight or more, based on the weight of the polishing liquid. is there.
- the content is preferably 99.9% by weight or less, more preferably 99% by weight or less, particularly preferably 97% by weight or less, and most preferably 95% by weight or less.
- the polishing liquid for a CMP process of the present invention has a power in which the above-mentioned abrasive, aqueous solvent and additives are blended in specific amounts, and further, if necessary, a known antioxidant, surfactant and other additives. (Such as chelating agents, pH adjusters, preservatives and defoamers) and the like.
- aliphatic or alicyclic amines having 2 to 16 carbon atoms alkylamines such as octylamine; oleylamine and the like); Cycloalkylamines such as cyclohexylamine, etc.) and their ethylene oxide (112 mol) adducts; alkanolamines (monoethanolamine, diethanoleamine, monopropanolamine, etc.) and their ethylene oxides (112 mol) Adducts; salts of aliphatic carboxylic acids (oleic acid, stearic acid, etc.) with alkali metals or alkaline earth metals; sulfonic acids (petroleum sulfonates, etc.); phosphates (lauryl phosphate, etc.), calcium silicates, etc.
- alkylamines such as octylamine; oleylamine and the like
- Cycloalkylamines such as cyclohexylamine, etc.
- Phosphates such as silicate, sodium phosphate, potassium phosphate, sodium polyphosphate, nitrite Nitrites such as sodium, 1, 2, 3_ benzotriazole ⁇ tetrazole, benzotriazole such as Cal Bo carboxymethyl benzotriazole.
- the content of the protective agent is preferably 0.01% by weight or more, more preferably 0.05% by weight or more, and particularly preferably 0.1% by weight, based on the weight of the polishing liquid. %, More preferably 5% by weight or less, more preferably 3% by weight or less, particularly preferably 2% by weight or less.
- a nonionic surfactant an anionic surfactant, and an amphoteric surfactant can be used.
- the anionic surfactant includes a hydrocarbon carboxylic acid having 8 to 24 carbon atoms or a salt thereof.
- amphoteric surfactant examples include betaine-type amphoteric surfactants [coconut oil fatty acid amide propionoledimethyl betaine, lauryl dimethyl betaine, 2-alkyl-1-carboxymethinolate-hydroxyethylimidazolinidium betaine, lauryl. Hydroxysulfobetaine and the like and amino acid-type amphoteric surfactants [i3-sodium laurylaminopropionate] and the like.
- the content of the surfactant is preferably 0.01% by weight or more, more preferably 0.05% by weight or more, based on the weight of the polishing liquid. It is particularly preferably at least 0.1% by weight, more preferably at most 5% by weight, more preferably at most 3% by weight, particularly preferably at most 1% by weight.
- Examples of the chelating agent include sodium polyacrylate, sodium ethylenediaminetetraacetate, sodium succinate, and sodium 1-hydroxyethane-1,1-diphosphonate.
- Examples of the pH adjuster include acids such as acetic acid, boric acid, citric acid, oxalic acid, phosphoric acid, and hydrochloric acid; and alkalis such as sodium hydroxide and potassium hydroxide.
- preservatives include alkyldiaminoethyldaricin hydrochloride and the like.
- antifoaming agent examples include a silicone antifoaming agent, a long-chain alcohol antifoaming agent, a fatty acid ester antifoaming agent, a polyoxyalkylene antifoaming agent, and a metal soap antifoaming agent.
- these other additives such as a chelating agent, a pH adjuster, a preservative and an antifoaming agent
- their content is preferably 0.001% by weight or more based on the weight of the polishing liquid.
- Magusuyo It is more preferably at least 0.05% by weight, particularly preferably at least 0.01% by weight, and preferably at most 10% by weight, more preferably at most 5% by weight, particularly preferably at most 2% by weight.
- a disperser (a homogenizer, an ultrasonic disperser, a ball mill, a bead mill, or the like) can be used in addition to a normal stirrer or the like that mixes each raw material.
- the temperature, time, etc. are not limited, but preferably, the temperature at the time of production is 5 ° C. or more and 40 ° C. or less.
- the polishing liquid is stocked in a slurry tank, and supplied from the slurry tank to the vicinity of the polishing head using a constant-rate pump.
- the pad can be made of ordinary polyurethane foam.
- Known apparatuses and conditions can be applied to the polishing apparatus and the polishing conditions.
- the polishing liquid for the CMP process after polishing can be recycled, and at that time, it can be purified by a filtration method or the like.
- the polishing method of the present invention comprises an abrasive, an aqueous solvent, and an additive, and the abrasive particles having a particle diameter of 20 to 80 nm are at least 15% by weight, preferably at most 80% by weight, more preferably at most 80% by weight, based on the weight of the polishing liquid.
- This is a method for polishing a device wafer, which is polished using a polishing liquid for a CMP process containing not more than 60% by weight.
- the polishing method comprises two or more polishing steps in which the polishing conditions are changed, and in any one of the steps, the polishing liquid for the CMP process of the present invention is used.
- the stage means that if the process conditions change, the process has shifted to the next stage, and it is not always necessary to stop the rotating device for each stage.
- the second and subsequent stages include not only the case where the condition is changed clearly, such as the case where the second stage and the subsequent stages are performed after the completion of the first stage, but also the case where the conditions are continuously changed.
- Continuously changing conditions mean multiple stages.
- the step of polishing with the polishing liquid for the CMP process of the present invention is not particularly specified, but is preferably the first step.
- the polishing method for the first and second and subsequent stages is not particularly limited, but it is preferable to perform polishing under one or more of the following conditions. (1) Change the material of the abrasive used in the first stage and the second and subsequent stages.
- polishing liquid for the second and subsequent stages a polishing liquid obtained by diluting the polishing liquid for the first stage to 1.1 to 100 times is used.
- the ratio [(tl) Z (t2)] of the rotation speed (tl) of the surface plate during the first-stage polishing and the rotation speed (t2) of the surface plate during the second-stage polishing is 0.2- 2.0.
- the material of the abrasive is as described above, and among these, any two or more abrasives can be selected.
- colloidal silica is used at any stage. It is more preferable to use colloidal silica in the first step.
- the abrasive used in the second and subsequent steps is preferably silicon dioxide or organic powder other than colloidal silica.
- the first-stage polishing liquid is more preferably 1.
- a polishing liquid diluted 1 to 80 times particularly preferably a polishing liquid diluted 1.1 to 50 times, and most preferably a polishing liquid diluted 1.1 to 10 times.
- a polishing liquid obtained by diluting the polishing liquid of the first step 1.1 to 100 times as the polishing liquid of the second and subsequent steps, it is possible to efficiently obtain the surface of the object to be polished with few scratches. Further, the surface of the object to be polished, which is very excellent in cleaning efficiency, can be obtained efficiently.
- [(rl) Z (r2)] is more preferably from 0.2 to 8.0, particularly preferably from 0.3 to 6.0, and most preferably from 0.5 to 4.0.
- [(rl) / (r2)] is in the range of 0.1 to 10.0, the surface of the object to be polished with few scratches can be efficiently obtained. In addition, the surface of the object to be polished having extremely excellent cleaning efficiency can be efficiently obtained.
- [(pl) Z (p2)] is more preferably 0.35-4.5, and particularly preferably 0.4-4.0. It becomes possible by adjusting the pressure when pressing against the polishing pad.
- the pressure at the time of polishing is not limited, but if it is within this preferable range of 60 kPa or less, a substrate with less scratches can be obtained.
- [(pl) / (p2)] is in the range of 0.3-35.0, the surface of the object to be polished with few scratches can be efficiently obtained. In addition, the surface of the object to be polished having a very excellent cleaning efficiency can be efficiently obtained.
- a device for polishing a general polishing device having a carrier holding a semiconductor substrate and a surface plate to which a polishing pad is attached can be used.
- the thickness of the substrate to be polished and removed is not particularly limited, and the laser force is preferably 30 to 200 nm force S, more preferably 40 to 160 ⁇ m, and particularly preferably. Is 50-120 nm. Within this range, a less scratched surface and a polished surface can be obtained at a practical speed during device production.
- polishing method of the present invention by using a polishing pad having a concentric groove or a spiral groove, it is possible to exhibit uniformly and stable polishing characteristics up to the outer peripheral portion of the wafer.
- pad conditioning is performed simultaneously with polishing for 10% or more, preferably 20% or more, particularly preferably 35% or more of the polishing time. Can be stably expressed.
- the size of the nod conditioner is not particularly limited to the size and the diameter and shape of the diamond to be fixed, and for example, CMP-MC 100A (manufactured by Asahi Diamond Co., Ltd.) can be used.
- the polishing head when the polishing liquid for the CMP process of the present invention is dropped on the polishing pad, the polishing head is placed on the polishing table rotation direction side of the polishing liquid dropping position.
- the polishing liquid dropping position By placing the polishing liquid dropping position on the rotation direction side of the polishing table rather than the pad conditioner, and further locating the polishing liquid closer to the center of the pad than the center of the polishing head, excellent polishing properties can be obtained. It can be stably expressed.
- the present inventors have determined that the quality and quantity of the above-mentioned abrasives and additives depend on the polishing characteristics, that is, without polishing the concave portions of the steps when polishing a device wafer having a pattern formed on the surface. It has been found that there is a great correlation with the characteristic that only the convex part can be polished (flatness characteristic).
- the present invention without leaving countless scratches on the polished wafer, it is possible to prevent the abrasive from aggregating due to additives, and to easily perform post-polishing cleaning. It is possible to significantly improve the yield rate of device wafers.
- the polishing solution and polishing method for a CMP process of the present invention are suitable for flattening a surface of a device wafer on which at least a silicon oxide film is formed. It is ideal for flattening the surface of liquid crystal display substrates.
- the interlayer insulating film and the element isolation film polished using the polishing liquid for a CMP process of the present invention have excellent surface flatness and facilitate multilayering of wiring. Further, the semiconductor device or the magnetic head comprising the interlayer insulating film and the element isolation film has excellent performance in electric characteristics.
- a 1 L glass reaction vessel equipped with a stirrer was charged with 360 ml of toluene, 10.8 g of sorbitan monoolate, 120 ml of ion-exchanged water, and 1 ml of acetic acid, and emulsified by vigorously stirring at 50 ° C. for 10 minutes.
- 140 ml of tetraethoxysilane was added at once, and reacted at 50 ° C. for 3 hours to obtain silica zonole. After cooling to room temperature, the silica zone was filtered through filter paper (No.
- silica zone was washed with methanol and ion-exchanged water (1 L each) in this order, and then dispersed in ion-exchanged water to obtain a slurry (2) having a silica concentration of 30%.
- a 0.1% aqueous solution of sodium silicate 1, OOOg was passed through a column of cationic exchange resin (Diaion SK1B; manufactured by Mitsubishi Chemical Corporation) 1, OOOg, and then stirred at 65 ° C for 5 hours. A silica zone was obtained. After cooling to room temperature, dehydration and concentration were performed in the same manner as in Production Example 1 to obtain a slurry (3) having a silica concentration of 30%.
- a slurry (1), 1, OOO g, and 13.4 g of a 30% aqueous ammonia solution were injected into a planetary mixer, and the mixture was stirred for 15 minutes to obtain a polishing liquid A for a CMP process.
- a slurry (2) (1, OOO g) and 33.5 g of a 30% aqueous ammonia solution were put into a planetary mixer, and the mixture was stirred for 15 minutes to obtain a polishing liquid B for the CMP process.
- a slurry (1) (1, OOOg) and hexamethylenediamine (40.Og) were put into a planetary mixer, and the mixture was stirred for 15 minutes to obtain a polishing liquid C for the CMP process.
- a slurry (3) (1, OOO g) and 33.5 g of a 30% aqueous ammonia solution were introduced into a planetary mixer, and the mixture was stirred for 15 minutes to obtain a polishing liquid D for a CMP process.
- polishing liquid F for CMP process A commercially available polishing liquid for CMP process “SS_25” (manufactured by Cabot microelectronics) was used as polishing liquid F for CMP process.
- Cerium carbonate hydrate is calcined in the air and dry-ground using a jet mill.
- the cerium oxide obtained is dispersed in water using a planetary mixer, and the abrasive concentration is 1% by weight.
- Polishing liquid G for CMP process was prepared.
- Alumina obtained by melting aluminum hydroxide in an electric furnace was dispersed in water using a planetary mixer. Next, a 1% by weight polyacrylic acid ammonium salt (weight average molecular weight: 30,000) was added to the dispersion, and the polishing slurry H for a CMP process with an abrasive concentration of 5% by weight was added. Was adjusted.
- the central particle diameter and the abrasive concentration (weight%) in the range of 20-80 nm, 30-70 nm, and 4060 nm in the polishing liquid were measured with a particle size distribution measuring device CHDF-2000.
- a particle size distribution measuring device CHDF-2000 was determined using Table 1 shows the results.
- a polishing test was performed on a patterned wafer having irregularities on the surface in accordance with the following polishing conditions 1, and a polishing wafer using a polishing liquid A-C for the CMP process was used.
- the workpiece used was SKW7_2 (manufactured by SKW Ink) Pattern II. Polishing was performed using a single-side polishing machine MAT_ARW681M (manufactured by Matec applied science).
- the polishing conditions were as follows: the polishing head pressure during polishing was 40 kPa, the polishing head rotation speed was 58 rpm, the polishing platen rotation speed was 60 rpm, the polishing liquid flow rate was 200 mlZ, the polishing time was 1 minute, and the first stage polishing was performed.
- the polishing liquid used in the first-stage polishing was diluted 1.5 times with ion-exchanged water.
- the polishing head pressure during polishing was 50 kPa, the polishing head rotation speed was 95 rpm, and the polishing platen rotation speed was 100 rpm, polishing liquid flow rate 200 ml / min, polishing time 15 seconds Step polishing was performed.
- the polishing head is installed on the rotation direction side of the polishing table with respect to the polish position of the polishing liquid for the CMP process, and the polish position of the polish liquid for the CMP process is rotated more than the pad conditioner.
- the polishing liquid for the CMP process was placed at a position closer to the center of the pad than the center of the polishing head.
- IC1000 (050) K_Groove / Suba400 (made by Rodel) having concentric grooves was used.
- pad conditioning was performed at a pressure of 20 kPa and a rotation speed of 20 rpm.
- pad conditioner CMP-MC 100A (made by Asahi Diamond Co., Ltd.) was used.
- SKW7-2 manufactured by SKW Inc. pattern wafers were polished using polishing liquid A for a CMP process under the following polishing conditions 25, and each was used as Example 7-10.
- the polishing condition 2 is exactly the same as the polishing condition 1 except that the polishing solution G used for the CMP process is used instead of the polishing solution diluted in the polishing solution used in the first stage as the polishing solution for the second stage polishing.
- the polishing condition 3 is exactly the same as the polishing condition 1 except that a polishing solution D for the CMP process is used instead of the polishing solution diluted in the polishing solution used in the first stage as the polishing solution for the second stage polishing.
- polishing condition 1 the same conditions as in polishing condition 4 are used except that the polishing head pressure in the second-stage polishing is changed to 80 kPa instead of 50 kPa.
- the same condition as the polishing condition 5 is adopted except that the table rotation speed of the second stage polishing is set to 120 rpm instead of 100 rpm.
- Polishing condition 6 is the same as polishing condition 1 except that the second-stage polishing is not performed.
- Polishing condition 7 is exactly the same as polishing condition 1 except that polishing liquid H for the CMP process is used instead of the polishing liquid diluted in the polishing liquid used in the first step as the polishing liquid for the second polishing step.
- polishing condition 1 exactly the same condition as the polishing condition 8 is adopted except that the polishing pressure in the second-stage polishing is changed to 150 kPa instead of 50 kPa.
- polishing condition 1 exactly the same condition as the polishing condition 9 except that the table rotation speed of the second stage polishing is set to 20 rpm instead of 100 rpm.
- Polishing condition 10 is exactly the same as polishing condition 1 except that the slurry dropping position is outside the center of the polishing head.
- Polishing condition 11 is exactly the same as polishing condition 1 except that the head position, conditioner, and slurry dropping position are reversed.
- polishing condition 12 Except that the polishing pad is changed to IC1000 (050) Perforate / Suba400 in polishing condition 1, the same conditions are used as polishing condition 12.
- the polishing condition 13 is the same as the polishing condition 1 except that the pad conditioning is not performed during the polishing.
- the ratio of the line width of the convex part to the concave part in the total of five existing dies is 10:90, 30:70, 40:60, 50:50, 60:40, 70:30 and 90:10.
- the average value of the difference in film thickness between the thickest convex part and the thinnest concave part was calculated as the remaining step of the wafer, with the convex part and concave part as measurement points, and the results determined based on the following criteria are shown in Table 2. It was shown to.
- ⁇ 3000 A or more and less than 5000 A
- ⁇ 10 or more and less than 20
- ⁇ 20 or more and less than 30
- the polishing liquid for a CMP process of the present invention has an effect that the polishing performance (flatness performance, low scratch property, high cleaning property, etc.) is remarkably superior to that of a conventionally used polishing liquid for a CMP process. To play. Further, when the polishing method of the present invention is used, there is an effect that an object to be polished having an excellent finish on the wafer surface with few scratches can be obtained.
- the polishing solution and the polishing method for the CMP process are suitable for flattening the surface of a device wafer on which at least a silicon oxide film is formed, and are suitable for a semiconductor device including an interlayer insulating film or an element isolation film in the semiconductor industry or the like. Ideal for flattening the surface of magnetic heads and substrates for liquid crystal displays.
Abstract
Description
Claims
Priority Applications (3)
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EP04731712A EP1628334A4 (en) | 2003-05-09 | 2004-05-07 | POLISHING LIQUID FOR A CMP PROCESS AND POLISHING METHOD |
US10/552,606 US20070269987A1 (en) | 2003-05-09 | 2004-05-07 | Polishing Liquid for Cmp Process and Polishing Method |
JP2005505986A JPWO2004100242A1 (ja) | 2003-05-09 | 2004-05-07 | Cmpプロセス用研磨液及び研磨方法 |
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- 2004-05-07 EP EP04731712A patent/EP1628334A4/en not_active Withdrawn
- 2004-05-07 TW TW093112885A patent/TW200517478A/zh unknown
- 2004-05-07 KR KR1020057021283A patent/KR20060015723A/ko not_active Application Discontinuation
- 2004-05-07 US US10/552,606 patent/US20070269987A1/en not_active Abandoned
- 2004-05-07 WO PCT/JP2004/006027 patent/WO2004100242A1/ja active Application Filing
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US7951715B2 (en) | 2003-07-31 | 2011-05-31 | Fujitsu Semiconductor Limited | Semiconductor device fabrication method |
JP4698144B2 (ja) * | 2003-07-31 | 2011-06-08 | 富士通セミコンダクター株式会社 | 半導体装置の製造方法 |
JP2005064450A (ja) * | 2003-07-31 | 2005-03-10 | Fujitsu Ltd | 半導体装置の製造方法 |
JP2006150534A (ja) * | 2004-11-30 | 2006-06-15 | Kao Corp | 研磨液組成物 |
US7618723B2 (en) * | 2006-07-18 | 2009-11-17 | Asahi Glass Company, Limited | Glass substrate for magnetic disk, its production method and magnetic disk |
JP2010525175A (ja) * | 2007-04-27 | 2010-07-22 | マクダーミッド インコーポレーテッド | 金属表面処理組成物 |
JP2012503329A (ja) * | 2008-09-19 | 2012-02-02 | キャボット マイクロエレクトロニクス コーポレイション | 低k誘電体のためのバリアースラリー |
JP2011222716A (ja) * | 2010-04-08 | 2011-11-04 | Fujimi Inc | 研磨用組成物及び研磨方法 |
US9117761B2 (en) | 2010-08-09 | 2015-08-25 | Fujimi Incorporated | Polishing composition and polishing method |
WO2012020672A1 (ja) * | 2010-08-09 | 2012-02-16 | 株式会社 フジミインコーポレーテッド | 研磨用組成物および研磨方法 |
JP2012038960A (ja) * | 2010-08-09 | 2012-02-23 | Fujimi Inc | 研磨用組成物および研磨方法 |
CN103154168A (zh) * | 2010-08-09 | 2013-06-12 | 福吉米株式会社 | 研磨用组合物及研磨方法 |
CN102391788A (zh) * | 2011-08-23 | 2012-03-28 | 南通海迅天恒纳米科技有限公司 | 氮化铝基片的快速超精密抛光浆料及抛光清洗加工方法 |
CN102391788B (zh) * | 2011-08-23 | 2014-11-26 | 江苏天恒纳米科技股份有限公司 | 氮化铝基片的快速超精密抛光浆料及抛光清洗加工方法 |
JP2015502993A (ja) * | 2011-11-09 | 2015-01-29 | ローディア オペレーションズ | ガラス基板を研磨するための添加剤混合物および組成物ならびに方法 |
KR20170074869A (ko) | 2014-10-22 | 2017-06-30 | 가부시키가이샤 후지미인코퍼레이티드 | 연마용 조성물 |
US10190024B2 (en) | 2014-10-22 | 2019-01-29 | Fujimi Incorporated | Polishing composition |
KR20180002629A (ko) | 2015-05-08 | 2018-01-08 | 가부시키가이샤 후지미인코퍼레이티드 | 연마용 조성물 |
JP2017068882A (ja) * | 2015-09-30 | 2017-04-06 | Hoya株式会社 | 磁気ディスク用基板の製造方法 |
JP2018085411A (ja) * | 2016-11-22 | 2018-05-31 | 株式会社ディスコ | ウエーハの加工方法 |
Also Published As
Publication number | Publication date |
---|---|
US20070269987A1 (en) | 2007-11-22 |
EP1628334A1 (en) | 2006-02-22 |
TW200517478A (en) | 2005-06-01 |
JPWO2004100242A1 (ja) | 2006-07-13 |
KR20060015723A (ko) | 2006-02-20 |
EP1628334A4 (en) | 2006-08-02 |
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