WO2002031874A1 - Toile abrasive, dispositif de polissage et procede pour fabriquer un dispositif a semiconducteur - Google Patents
Toile abrasive, dispositif de polissage et procede pour fabriquer un dispositif a semiconducteur Download PDFInfo
- Publication number
- WO2002031874A1 WO2002031874A1 PCT/JP2001/008717 JP0108717W WO0231874A1 WO 2002031874 A1 WO2002031874 A1 WO 2002031874A1 JP 0108717 W JP0108717 W JP 0108717W WO 0231874 A1 WO0231874 A1 WO 0231874A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polishing
- polishing cloth
- polished
- polymer material
- cloth
- Prior art date
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- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- VCVSJHMXCRDLKE-UHFFFAOYSA-N [butyl(dimethyl)silyl] 2-methylprop-2-enoate Chemical compound CCCC[Si](C)(C)OC(=O)C(C)=C VCVSJHMXCRDLKE-UHFFFAOYSA-N 0.000 description 1
- NDZXTRNRKDPOGQ-UHFFFAOYSA-N [butyl-di(propan-2-yl)silyl] 2-methylprop-2-enoate Chemical compound CCCC[Si](C(C)C)(C(C)C)OC(=O)C(C)=C NDZXTRNRKDPOGQ-UHFFFAOYSA-N 0.000 description 1
- ICINTUUFEKLSPN-UHFFFAOYSA-N [butyl-di(propan-2-yl)silyl] prop-2-enoate Chemical compound CCCC[Si](C(C)C)(C(C)C)OC(=O)C=C ICINTUUFEKLSPN-UHFFFAOYSA-N 0.000 description 1
- RXHWOZDAPLBONN-UHFFFAOYSA-N [dibutyl(octyl)silyl] 2-methylprop-2-enoate Chemical compound CCCCCCCC[Si](CCCC)(CCCC)OC(=O)C(C)=C RXHWOZDAPLBONN-UHFFFAOYSA-N 0.000 description 1
- QJMLLVXBMLOCRI-UHFFFAOYSA-N [dibutyl(octyl)silyl] prop-2-enoate Chemical compound CCCCCCCC[Si](CCCC)(CCCC)OC(=O)C=C QJMLLVXBMLOCRI-UHFFFAOYSA-N 0.000 description 1
- QUAIJCJTZGCHNY-UHFFFAOYSA-N [dicyclohexyl(phenyl)silyl] 2-methylprop-2-enoate Chemical compound C1CCCCC1[Si](C=1C=CC=CC=1)(OC(=O)C(=C)C)C1CCCCC1 QUAIJCJTZGCHNY-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- 125000006267 biphenyl group Chemical group 0.000 description 1
- 239000005380 borophosphosilicate glass Substances 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 101150089047 cutA gene Proteins 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 229960004419 dimethyl fumarate Drugs 0.000 description 1
- MOTZDAYCYVMXPC-UHFFFAOYSA-N dodecyl hydrogen sulfate Chemical compound CCCCCCCCCCCCOS(O)(=O)=O MOTZDAYCYVMXPC-UHFFFAOYSA-N 0.000 description 1
- 229940043264 dodecyl sulfate Drugs 0.000 description 1
- 229910052571 earthenware Inorganic materials 0.000 description 1
- 150000002168 ethanoic acid esters Chemical class 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- RTSODCRZYKSCLO-UHFFFAOYSA-N malic acid monomethyl ester Natural products COC(=O)C(O)CC(O)=O RTSODCRZYKSCLO-UHFFFAOYSA-N 0.000 description 1
- 229960002510 mandelic acid Drugs 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- LLBAPKIIGXPQIC-UHFFFAOYSA-N methanesulfonic acid;prop-2-enoic acid Chemical compound CS(O)(=O)=O.OC(=O)C=C LLBAPKIIGXPQIC-UHFFFAOYSA-N 0.000 description 1
- USUBUUXHLGKOHN-UHFFFAOYSA-N methyl 2-methylidenehexanoate Chemical compound CCCCC(=C)C(=O)OC USUBUUXHLGKOHN-UHFFFAOYSA-N 0.000 description 1
- GXHBCNAEUPUGHU-UHFFFAOYSA-N n,n-dimethyl-2-methylidenebutanamide Chemical compound CCC(=C)C(=O)N(C)C GXHBCNAEUPUGHU-UHFFFAOYSA-N 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920002857 polybutadiene Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- AHIHJODVQGBOND-UHFFFAOYSA-M propan-2-yl carbonate Chemical compound CC(C)OC([O-])=O AHIHJODVQGBOND-UHFFFAOYSA-M 0.000 description 1
- UBDIMPWXBMWVTC-UHFFFAOYSA-N quinoline-2-carboxylic acid Chemical compound C1=CC=CC2=NC(C(=O)O)=CC=C21.C1=CC=CC2=NC(C(=O)O)=CC=C21 UBDIMPWXBMWVTC-UHFFFAOYSA-N 0.000 description 1
- GJAWHXHKYYXBSV-UHFFFAOYSA-N quinolinic acid Chemical compound OC(=O)C1=CC=CN=C1C(O)=O GJAWHXHKYYXBSV-UHFFFAOYSA-N 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- WIJVUKXVPNVPAQ-UHFFFAOYSA-N silyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)O[SiH3] WIJVUKXVPNVPAQ-UHFFFAOYSA-N 0.000 description 1
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- VXKWYPOMXBVZSJ-UHFFFAOYSA-N tetramethyltin Chemical compound C[Sn](C)(C)C VXKWYPOMXBVZSJ-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- PDULSGRSFWCKJV-UHFFFAOYSA-N tridodecylsilyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCC[Si](CCCCCCCCCCCC)(CCCCCCCCCCCC)OC(=O)C(C)=C PDULSGRSFWCKJV-UHFFFAOYSA-N 0.000 description 1
- PWVJTRQTFFVDEU-UHFFFAOYSA-N triethylsilyl 2-methylprop-2-enoate Chemical compound CC[Si](CC)(CC)OC(=O)C(C)=C PWVJTRQTFFVDEU-UHFFFAOYSA-N 0.000 description 1
- DYJLQZXQYXLTMV-UHFFFAOYSA-N trioctylsilyl prop-2-enoate Chemical compound CCCCCCCC[Si](CCCCCCCC)(CCCCCCCC)OC(=O)C=C DYJLQZXQYXLTMV-UHFFFAOYSA-N 0.000 description 1
- PIQIWPDMOYYEBV-UHFFFAOYSA-N triphenylsilyl 2-methylprop-2-enoate Chemical compound C=1C=CC=CC=1[Si](C=1C=CC=CC=1)(OC(=O)C(=C)C)C1=CC=CC=C1 PIQIWPDMOYYEBV-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 238000001771 vacuum deposition Methods 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
- UIYCHXAGWOYNNA-UHFFFAOYSA-N vinyl sulfide Chemical compound C=CSC=C UIYCHXAGWOYNNA-UHFFFAOYSA-N 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/304—Mechanical treatment, e.g. grinding, polishing, cutting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/32115—Planarisation
- H01L21/3212—Planarisation by chemical mechanical polishing [CMP]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/04—Lapping machines or devices; Accessories designed for working plane surfaces
- B24B37/042—Lapping machines or devices; Accessories designed for working plane surfaces operating processes therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B37/00—Lapping machines or devices; Accessories
- B24B37/11—Lapping tools
- B24B37/20—Lapping pads for working plane surfaces
- B24B37/24—Lapping pads for working plane surfaces characterised by the composition or properties of the pad materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
- B24B49/16—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
- B24D11/001—Manufacture of flexible abrasive materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
- B24D3/20—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
- B24D3/28—Resins or natural or synthetic macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
- B24D3/34—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
- B24D3/342—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent
- B24D3/344—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties incorporated in the bonding agent the bonding agent being organic
Definitions
- Polishing cloth polishing apparatus, and method of manufacturing semiconductor device
- the present invention relates to a polishing cloth, a polishing apparatus, and a method for manufacturing a semiconductor device.
- a semiconductor substrate for example, a semiconductor wafer
- an insulating film on the semiconductor wafer is flattened, or a metal film is formed to form embedded wiring.
- a polishing apparatus having a polishing cloth is used.
- a polishing cloth having fine irregularities is coated on a surface having a two-layered structure of hard foamed polyurethane or a hard foamed polyurethane and a polyurethane nonwoven fabric.
- the semiconductor wafer is polished by the holder using an insulating film as a polishing surface.
- the semiconductor wafer is held by the holder by the holder while the polishing slurry including the abrasive grains is supplied from the supply pipe while the semiconductor wafer is opposed to the polishing cloth. Then, the holder and the turntable are rotated in the same direction.
- polishing abrasive grains of about m are filled in the open pores (usually 40 to 50 ⁇ m diameter) of the polishing cloth, and the polishing abrasive grains are uniformly dispersed between the polishing cloth and the semiconductor wafer. Abrasive grains are also held in the polishing cloth between the open pores. For this reason, the insulating film of the semiconductor wafer is mechanically polished, and as a result, the surface of the insulating film is planarized.
- the polishing is continued for a long time, the abrasive grains accumulate in the open pores, and the amount of the abrasive grains existing in the polishing cloth portion between the open pores increases. In other words, the polishing power of the abrasive grains increases. As a result, the polishing rate becomes higher as compared with the initial stage of polishing, that is, so-called fluctuation in polishing performance is caused.
- a polishing cloth whose polishing performance fluctuates is a dressing apparatus having a dressing tool having a structure in which a large number of diamond particles are electrodeposited on a metal base material. It is processed and played back by using. However, it is difficult to avoid the variation in the polishing ability due to the polishing cloth unless such dressing is performed every time the member to be polished is polished. Therefore, the polishing operation including the dressing process becomes complicated. Disclosure of the invention
- An object of the present invention is to provide a polishing cloth which can exhibit stable polishing performance for a relatively long time without performing a dressing treatment.
- Another object of the present invention is to stabilize a conductive member such as a high-precision embedded wiring layer in at least one embedding member selected from a groove and an opening in an insulating film on a semiconductor substrate.
- a method for manufacturing a semiconductor device which can be formed by:
- a polishing cloth having a polishing layer containing a polymer material that is hydrolyzed by an aqueous medium.
- a polymer material which is hydrolyzed in an aqueous medium and a group consisting of cerium oxide, manganese oxide, silica, alumina, and zirconia dispersed in the polymer material.
- a polishing cloth having a polishing layer containing at least one selected abrasive grain is provided.
- a polishing cloth having a polishing layer containing a polymer material soluble in an aqueous medium is provided.
- the polymer material is selected from the group consisting of a polymer material soluble in an aqueous medium and cerium oxide, manganese oxide, silica, alumina, and zirconia dispersed in the polymer material.
- a polishing cloth having a polishing layer containing at least one polishing abrasive grain is provided.
- At least one abrasive grain selected from the group consisting of ceramic oxide, manganese oxide, silica, alumina and zirconia is dispersed and contained,
- the surface does not elute under a non-frictional force in the presence of a medium, and the surface elutes under a frictional force, and the polishing abrasive has a polishing layer provided on the surface.
- a polishing cloth is provided.
- a rotating tape notch having a polishing cloth having a polishing layer containing a polymer material hydrolyzed in an aqueous medium attached to a surface thereof,
- Holding means for rotating in the same direction as the rotary table; supply means for supplying a polishing slurry containing abrasive grains to the polishing cloth;
- a polymer selected from the group consisting of a polymer material hydrolyzed in an aqueous medium and cerium oxide, manganese oxide, silica, alumina, and zirconium dispersed in the polymer material is selected.
- Holding means for rotating in the same direction as the rotary table; supply means for supplying a polishing composition containing at least water without containing abrasive grains in the polishing cloth.
- a rotating table having a polishing cloth having a polishing layer containing a polymer material soluble in an aqueous medium attached to a surface thereof; It is disposed above the rotary table so as to be vertically movable and rotatable, holds the member to be polished, and presses the member to be polished against the polishing cloth of the rotary table with a desired load.
- Holding means rotating in the same direction as the rotary table; supply means for supplying a polishing slurry containing abrasive grains to the polishing cloth;
- the polymer material is selected from the group consisting of a polymer material soluble in an aqueous medium and cerium oxide, manganese oxide, silica, alumina, and zirconia dispersed in the polymer material.
- a rotating table having, on its surface, a polishing cloth having a polishing layer containing at least one polishing abrasive grain;
- rotary table It is disposed above the rotary table so as to be vertically movable and rotatable, holds the member to be polished, and presses the member to be polished against the polishing cloth of the rotary table with a desired load.
- a rotating tape having a polishing cloth having a polishing layer whose surface elutes due to frictional force in the presence of an aqueous medium attached to a surface thereof;
- Holding means rotating in the same direction as the rotary table, and supply means for supplying a polishing slurry containing abrasive grains to the polishing cloth.
- At least one abrasive grain selected from the group consisting of ceramic oxide, manganese oxide, silica, alumina, and zirconia is dispersed and contained.
- a rotating table on which a polishing cloth having a polishing layer on which the surface is eluted by the frictional force in the presence of the aqueous medium and the polishing abrasive grains are supplied to the surface is attached;
- Holding means that rotates in the same direction as the rotary table of
- Supply means for supplying a polishing composition containing at least water without containing abrasive grains in the polishing cloth;
- the insulating film on the semiconductor substrate has at least one embedding hole selected from a groove corresponding to the shape of the wiring layer and an opening corresponding to the shape of the via file.
- a method for manufacturing a semiconductor device comprising:
- the polishing apparatus comprises: a rotary table having a polishing cloth having a polishing layer containing a polymer material hydrolyzed by an aqueous medium, attached to a surface thereof; and a vertically movable and rotatably disposed above the rotary table.
- Holding means for holding the member to be polished and rotating the member to be polished in the same direction as the rotary table for pressing the member to be polished against the polishing cloth of the rotary table with a desired load;
- Supply means for supplying a polishing slurry containing abrasive grains to a polishing cloth; and a method for manufacturing a semiconductor device.
- a step of forming at least one embedding member selected from a groove corresponding to a shape of a wiring layer and an opening corresponding to a shape of a via file in an insulating film on a semiconductor substrate Forming a wiring material film made of copper or a copper alloy on the insulating film including the inner surface of the embedding member;
- a method for manufacturing a semiconductor device comprising:
- the polishing apparatus is selected from the group consisting of a polymer material hydrolyzed in an aqueous medium and a dispersion of the polymer material such as cerium oxide, manganese oxide, silica, alumina and zirconia.
- a rotating table having a polishing layer having a polishing layer containing at least one abrasive grain is mounted on the surface thereof, and the rotating table is disposed on the rotating table so as to be vertically movable and rotatable so as to hold the member to be polished.
- the member to be polished is Holding means rotating in the same direction as the rotary table for pressing the polishing cloth with a desired load; and a polishing composition for supplying a polishing composition containing at least water without containing abrasive grains to the polishing cloth.
- At least one embedding member selected from a groove corresponding to the shape of the wiring layer and an opening force corresponding to the shape of the via file is formed in the insulating film on the semiconductor substrate.
- a method for manufacturing a semiconductor device comprising:
- the polishing apparatus comprises: a rotating table having a polishing cloth having a polishing layer containing a polymer material soluble in an aqueous medium attached to a surface thereof; and a vertically moving and rotatingly disposed above the rotating table.
- Holding means for holding the member to be polished, and pressing the member to be polished against the polishing cloth of the turntable with a desired load, the holding means being rotated in the same direction as the turntable;
- Supply means for supplying a polishing slurry containing polishing abrasive grains to a cloth; and a method for manufacturing a semiconductor device.
- At least one embedding member selected from a groove corresponding to the shape of the wiring layer and an opening force corresponding to the shape of the via file is formed in the insulating film on the semiconductor substrate.
- a method for manufacturing a semiconductor device comprising:
- the polishing apparatus is at least selected from the group consisting of a polymer material soluble in an aqueous medium and cerium oxide, manganese oxide, silica, alumina and zirconia dispersed in the polymer material.
- holding means rotating in the same direction as the rotary table for pressing the member to be polished against the polishing cloth of the rotary table with a desired load; and the polishing cloth includes abrasive grains.
- a supply means for supplying a polishing composition containing at least water.
- At least one embedding member selected from the opening force corresponding to the shape of the groove and the via file corresponding to the shape of the wiring layer is formed in the insulating film on the semiconductor substrate.
- a method for manufacturing a semiconductor device comprising: The polishing apparatus comprises: a rotating table on which a polishing cloth having a polishing layer whose surface elutes due to frictional force in the presence of an aqueous medium is attached to the surface; Holding means for holding the member to be polished and pressing the member to be polished against the polishing cloth of the rotary table with a desired load in the same direction as the rotary table. And a supply unit for supplying a polishing slurry containing abrasive grains to the polishing cloth.
- At least one embedding member selected from a groove corresponding to a shape of a wiring layer and an opening corresponding to a shape of a via file is formed in an insulating film on a semiconductor substrate.
- a method for manufacturing a semiconductor device comprising:
- the polishing apparatus contains at least one abrasive grain dispersed in at least one selected from the group consisting of cerium oxide, manganese oxide, silica, alumina, and zirconia.
- the surface is eluted by the lower frictional force, and the polishing abrasive grains are supplied to the surface.
- a rotating table attached to the surface of a polishing cloth having a polishing layer, and a vertically moving table above the rotating table. It is arranged freely and rotatably, holds the member to be polished, and presses the member to be polished against the polishing cloth of the rotary table with a desired load. And a supply means for supplying a polishing composition containing at least water without containing abrasive grains in the polishing cloth.
- FIG. 1 is a schematic diagram showing one embodiment of a polishing apparatus according to the present invention
- FIG. 2 is a polishing time when polishing a silicon oxide film by the polishing apparatuses of Example 1 and Comparative Example 1 of the present invention.
- 3A, 3B, and 3C are cross-sectional views illustrating the steps of manufacturing a semiconductor device according to Embodiment 8 of the present invention.
- This polishing cloth has a polishing layer containing a polymer material that is hydrolyzed in an aqueous medium.
- a polishing cloth is, specifically, a polishing cloth consisting of only a polishing layer formed by molding the above-mentioned high molecular material by injection molding or the like, or on a substrate consisting of various materials such as metal.
- Another example is a polishing cloth formed by casting the above-mentioned polymer material to form a polishing layer.
- the polymer material has a main chain in which a structure hydrolyzed in an aqueous medium is branched and bonded.
- Examples of the structure hydrolyzed by the aqueous medium include those represented by the following formulas (I) and (II).
- R 1 to R 3 in the formula are all groups selected from an alkyl group and an aryl group, and may be the same or different groups.
- R 4 to R 6 in the formula are each a hydrogen atom or carbon number:!
- R 18 is an organic group having from 1 to 18 carbon atoms
- R 7 is an organic group having 1 to 18 carbon atoms, even if R 6 and R 7 are bonded to each other to form a heterocyclic ring having ⁇ as a hetero atom.
- ⁇ 1 is an oxygen atom or a sulfur atom.
- R 1 to R 3 in the formula (I) represent a hydrogen atom, an alkyl group, and an aryl group, respectively.
- This alkyl group is particularly preferably an alkyl group having 1 to 18 carbon atoms, more preferably a linear alkyl group, and more preferably a linear alkyl group having 1 to 4 carbon atoms. It is most preferably an alkyl group.
- alkyl group examples include methyl, ethyl, n-propynole, isopropyl, n-petitinole, sec mono-pentinole, isobutyl, n-amino, isoamyl, sec — Amyl, n-pentyl, n-octinole, dodecyl, setinole, stearyl, etc.
- Examples of the aryl group include, but are not limited to, fuel, substituted file, naphthyl, and substituted naphthyl.
- Examples of the polymer material in which the structure hydrolyzed in the aqueous medium represented by the above formula (I) is branched and bonded to the main chain include, for example, carboxyl group-containing ⁇ , ⁇ monounsaturated monomers. ⁇ , 3-Unsaturated carboxylic acid trialkylsilyl ester is formed by the reaction with trialkylsilinolechloride, and the ester is homopolymerized or copolymerized. And homopolymers or copolymers obtained as described above.
- Examples of the carboxyl group-containing mono-unsaturated monomer used herein include acrylic acid, methacrylic acid, itaconic acid, mesaconic acid, maleic acid, and the like. Fumaric acid and the like.
- the trialkylsilyl chlorides include trimethyl, triethyl, tri- ⁇ -propyl, triisopropyl, tri- ⁇ -butyl, tri-sec, butyl and tri-ethyl.
- Lysobutyl tri-n—amil, triisoamyl, tri-sec—aminole, tri-n—pentinole, tri-n—octinole, tridodecyl, tricetyl, tri Silyl chloride such as phenyl, tri-p-methylphenyl, tribenzyl and the like can be suitably used.
- polymer material in which the structure hydrolyzed in the aqueous medium represented by the formula (I) is branched and bonded to the main chain include, for example, a monomer represented by the following formula (III) A,] 3-unsaturated homopolymers or copolymers having structural units based on the body and structural units based on the monomer represented by the following formula (IV): .
- R 1 to R 3 in these formulas are all groups selected from a hydrogen atom, an alkyl group and an aryl group, and may be the same or different groups. There may be.
- CH 2 CH-C- 0- Si "(CH 2 CH 2 CH 3 ) 3 ( ⁇ -3)
- CH 2 CH- C— 0-Si ⁇ (CH 2 CH 2 CH 2 CH 2 CH 3 ) s (m-8)
- CH 2 CH- C- 0- Si- (CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 2 CH 3 ) 3
- Triphenylsilylacrylate Triphenylsilyl acrylate
- Tri-P-methylphenylacrylate Tribenzylsilylacrylate ( ⁇ 4) Ethyl dimethylsilyl acrylate n-butyldimethylsilyl acrylate
- the polymer material is a copolymer (copolymer)
- the aforementioned ⁇ , monounsaturated trialkylsilyl carboxylate is copolymerized with another monomer (monomer). Polymerizes.
- the monomer used here include ⁇ , -unsaturated monomers.
- the ⁇ ,] 3—unsaturated monomers include, for example, methyl (meta) acrylate, ethyl (meta) acrylate, n-propyl (meta) ) Acrylate, isopropyl (meta) acrylate, n-butyl (meta) acrylate, sec — butynole (meta) acrylate, t — Butyl (meta) acrylate, cyclohexyl (meta) acrylate, 2-ethylhexyl (meta) atalylate, lauril (meta) Acrylate, stearyl (meta) acrylate, styrene, ⁇ —methyl styrene, ⁇ —butylene, acrylonitrile, 2— Hydroxy Shechil (meta) acrylate, 2—Hydroxy Shechinore (meta) acrylate Polyethylene glycol or polypropylene glycol adducts, and
- R 4 , R 5 and R 6 in the above formula (II) are each a hydrogen atom Or an organic group such as an alkyl group having 1 to 18 carbon atoms, aryl group, or alkanol group, and R 7 is an alkyl group having 1 to 18 carbon atoms, aryl group, or alkyl group. And these organic groups may have an appropriate substituent, and R 6 and R 7 are not bonded to each other and have no substituent in which ⁇ is a hetero atom. May form a heterocyclic ring.
- Alkyl groups include methyl, ethyl, ⁇ -propynole, isopropynole, ⁇ -petitinole, sec-butinole, isobutyl, n-amyl, isoaminole, sec-aminomin, n-pentinole , N-octinole, dodecinole, cetyl and stearyl are preferred.
- the compound having a structure hydrolyzed in an aqueous medium represented by the above formula ( ⁇ ) is, for example, a compound having a carboxyl group (for example, one or more, preferably 1 to 120 carbon atoms in one molecule). Reaction of a compound having a xyl group) with a vinyl ether compound, a vinyl thioether compound represented by the following formula (VIII), or a heterocyclic compound having a Bull type double bond having an oxygen atom or a sulfur atom as a hetero atom. Can be easily obtained.
- R 4 to R 6 are each a hydrogen atom or an organic group having 1 to 18 carbon atoms
- R 7 is an organic group having 1 to 18 carbon atoms
- R 6 and R 7 are bonded to each other. rather it may also have a Y l form a heterocyclic ring and hetero b atom Te
- Upsilon 1 is an oxygen atom or a sulfur atom.
- R 4, R 5 and R 6 in the above formula (VIII) each represent a hydrogen atom
- R 7 is an alkyl group having 1 to 18 carbon atoms, an aryl group, an organic group such as an alkanol group
- R 7 is an alkyl group having 1 to 18 carbon atoms, an aryl group, an alkyl group.
- These organic groups may have an appropriate substituent
- R 6 and R 7 are bonded to each other to have ⁇ ⁇ as a hetero atom. It may or may not form a complex ring.
- Examples of the preferable polymer material having one or more carboxyl groups in one molecule include a polyester resin, an acryl resin, and a maleated polybutadiene resin. .
- the reaction between the compound having one or more carboxyl groups in one molecule and the compound represented by the formula (VIII) is usually carried out in the presence of an acid catalyst at a temperature in the range of room temperature or 100 ° C. Will be
- the polymer material having the structure hydrolyzed in the aqueous medium represented by the formula (II) branched and bonded to the main chain includes a carboxy group-containing monounsaturated monomer and a compound represented by the formula (VIII) )
- Homopolymers or copolymers obtained by homopolymerizing or copolymerizing a reaction product with a compound are exemplified.
- the unsaturated monomer containing a carboxyl group such as acrylic acid, methacrylic acid, itaconic acid, mesaconic acid, malein Acid, fumaric acid, and the like.
- polymer material in which the structure hydrolyzed in the aqueous medium represented by the formula (II) is branched and bonded to the main chain include, for example, a monomer represented by the following formula (V). And ⁇ , ⁇ monounsaturated homopolymers and copolymers having a structural unit based on the monomer represented by the following formula (VI).
- R 4 to R 6 in these formulas are each a hydrogen atom or an organic group having 1 to 18 carbon atoms
- R 7 is an organic group having 1 to 18 carbon atoms
- R 6 and R 7 are mutually bonded.
- Y l a heteroatom Y 1 may be an oxygen atom or a sulfur atom, which may form a ring, and the carboxyl group-containing ⁇ ,] 3-unsaturated monomer corresponding to the structural unit of the formula (V) and the formula (VIII)
- the reaction products of the compounds represented by the following formulas (acrylic acid to acetic acid ester) are listed below as Formulas (V-1) to (V-8).
- CH 2 C (CH 3 ) -C-0-CH-0-CH 3
- CH 2 C (CH 3 ) -C- 0-CH- 0-CH 2 CH 3 (VI-2)
- CH 2 C (CH 3 )-C- 0-CH- 0-CH 2 CH 2 CH 3
- CH 2 C (CH 3 )-C- 0- CH- 0- CH 2 CH 2 CH 2 CH 3 (VI-5)
- reaction products of other preferable carboxyl group-containing ⁇ ,; 3-unsaturated monomers and the compound represented by the above formula (VIII) are represented by the following formulas (IX-1) to (IX-8). ).
- Dipyranyl maleate When the polymer material is a copolymer (copolymer), the reaction product of the above-mentioned carboxyl group-containing ⁇ , / 3-unsaturated monomer and the compound represented by the formula (VIII) is produced. The product is copolymerized with another monomer (monomer). Examples of the monomers used here include ct,] 3-unsaturated monomers.
- the ⁇ , ⁇ -unsaturated monomers include, for example, methyl (meth) acrylate, ethyl (meta) acrylate, and ⁇ —propyl (meta) a.
- Tallylate isopropyl (meta) atalylate, ⁇ —butynole (meta) acrylate, sec—butyl (meta) atalylate, t-butyl (meta) Atalylate, cyclohexyl (meta) acrylate, 2-ethylhexyl (meta) acrylate, lauril (meta) atelylate , Stearyl (meta) atalylate, styrene, a-methinorestilene, p-bielt norlen, acrylonitrile, 2-hydroxy Shechill (meta) acrylate, 2 — Hydroxy Shechill (meta) acrylate Additives of polyethylene glycol or polypropylene glycol, and methyl or ethyl ether forms thereof.
- the content of the structural unit based on the monomers represented by the formulas (III), (IV), (V) and (VI) in the polymer material is 20 to 100% by weight. More preferably, it is 40 to 100% by weight. If the content of the structural unit is less than 20% by weight, the amount of lipoxyl groups to be regenerated when the polymer material is hydrolyzed is too small, so that the solubility of the polymer material in the aqueous medium is reduced. And the polishing performance is inferior.
- the polymer material has a number average molecular weight of 500 to 500,000, a glass transition temperature of 30 to 100 ° C, and more preferably a number average molecular weight S500.
- glass transition temperature is preferably 40 to 80 ° C.
- Such a polishing cloth containing a polymer material having a specific number-average molecular weight and a glass transition temperature can further stabilize the polishing performance when polishing a member to be polished.
- the polishing layer has a form in which particles of a substance having higher solubility than the polymer material are dispersed in the polymer material.
- the particles include rosin, cellulose, and polyvinyl alcohol. It is preferable that such particles are dispersed in the range of 1 to 50% by volume based on the polymer material. If the dispersion amount of the particles is less than 1% by volume, it becomes difficult to sufficiently enhance the dispersion effect of the particles (the effect of promoting the dissolution of the polishing layer in the polishing process). The dispersion amount of the particles is 50 volumes. If it exceeds / 0 , it may be decomposed at the same time as being immersed in an aqueous solution, and may not function as a polishing cloth.
- the polishing cloth is made of a polymer material that is hydrolyzed in an aqueous medium and a small amount selected from the group consisting of cerium oxide, manganese oxide, silica, alumina, and zirconia dispersed in the polymer material. It has a polishing layer containing at least one abrasive grain.
- a polishing cloth is, specifically, a polishing cloth comprising only a polishing layer formed by molding the above-mentioned polymer material and abrasive grains by spray molding or the like, W 02
- polishing cloth formed by casting the above-mentioned polymer material and abrasive grains on a substrate made of various materials such as metal to form a polishing layer.
- the same material as described in the polishing cloth of (1) is used.
- the abrasive grains are uniformly dispersed and blended in the polymer material in a range of 0.5 to 20% by weight.
- the abrasive grains have an average particle diameter of 0.02 to 0.1 ⁇ and have a spherical shape or a shape close to a spherical shape.
- This polishing cloth has a polishing layer containing a polymer material soluble in an aqueous medium.
- a polishing cloth is, specifically, a polishing cloth consisting of only a polishing layer formed by molding the above-mentioned polymer material by injection molding or the like, or a base consisting of various materials such as metal.
- a polishing cloth in which a polishing layer is formed by casting the polymer material on a material, for example, can be given.
- the polymer material has a relative speed between the polishing layer and the member to be polished of 1.0 msec when a load of 300 gf Zc ⁇ 2 is applied to the member to be polished to the polishing layer.
- the dissolution rate in the aqueous medium is 0.01 to 100.0 mg Z min.
- the polishing layer and the member to be polished are not rotated with respect to each other while a desired load is applied to the member to be polished on the polishing layer of the polishing cloth.
- a polishing slurry containing, for example, abrasive grains and water is supplied to the polishing layer to polish the member to be polished, the surface of the polishing layer is improved.
- the abrasive grains may be locally accumulated in the polishing layer.
- the dissolution rate exceeds 10.0 mg / min, the polishing slurry is released to the outside of the polishing layer due to the high dissolution rate of the polished surface when polishing the member to be polished.
- the abrasive grains during the polishing may not be sufficiently supplied between the polishing layer and the member to be polished.
- polymer materials include, but are not limited to, acrylic acid, meta-atalinoleic acid, itaconic acid, fumanoleic acid, maleic acid, hydroxyalkyl acrylate, and hydroxy.
- Xyalkylmethacrylate, N—Butyl 2—Pyrrolidone, methylbutylether, N—Bullformamide, N, N—Dimethylethylacrylamide examples include homopolymers or copolymers obtained by polymerizing one or more monomers.
- the polishing cloth is made of a polymer material soluble in an aqueous medium and a small amount selected from the group consisting of cerium oxide, manganese oxide, silica, alumina, and zirconia dispersed in the polymer material. It has a polishing layer containing at least one abrasive grain.
- a polishing cloth is, specifically, a polishing cloth composed of only a polishing layer formed by molding the above-mentioned polymer material and abrasive grains by injection molding or the like, or a base composed of various materials such as metal.
- a polishing cloth in which a polishing layer is formed by casting the above-described polymer material and polishing abrasive grains on a material, for example, can be given.
- the same one as described for the polishing cloth of (3) above is used. It is preferable that the abrasive grains are uniformly dispersed and blended in the polymer material in a range of 0.5 to 20% by weight.
- the abrasive grains have an average particle diameter of 0.02 to 0.1 ⁇ and have a spherical shape or a shape close to a spherical shape.
- This polishing cloth has a polishing layer whose surface does not elute under a non-frictional force in the presence of an aqueous medium and whose surface elutes under a frictional force.
- the “frictional force” refers to the relative force between the polishing layer and the member to be polished in a state where a load of 150 to 500 gf Z cm S is applied to the member to be polished. It means the force applied to the polishing layer when the speed is set to 0.2 to 3.0 m / sec.
- Examples of such a polishing cloth include those having a structure composed of only the polishing layer and those having a structure in which the polishing layer is formed on a base material composed of various materials such as metal. You.
- the polishing layer is made of, for example, a polymer material hydrolyzed by the aqueous medium described in the polishing cloth of (1) (particularly, represented by the formulas (III), (IV), (V) and (VI)). (Homopolymer or copolymer) having a structural unit based on the monomer to be used.
- This polishing cloth contains at least one abrasive grain dispersedly selected from the group consisting of cerium oxide, manganese oxide, silica, alumina, and zirconia, and contains an aqueous medium.
- the surface does not elute under a non-frictional force, and the surface elutes under a frictional force, and the polishing abrasive grains are supplied to the surface.
- the “frictional force” refers to a relative force between the polishing layer and the member to be polished in a state where a load of 150 to 500 gf / cm 2 is applied to the member to be polished. It means the force applied to the polishing layer when the speed is set to 0.2 to 3.0 m / sec.
- Such a polishing cloth has, for example, a structure in which only the polishing layer containing the abrasive grains is provided, or a structure in which the polishing layer including the abrasive grains is formed on a base made of various materials such as metal. Can be mentioned.
- the polishing layer is made of, for example, a polymer material hydrolyzed by the aqueous medium described in the polishing cloth (1) (especially, the above-mentioned formulas (III), (IV), (V) and (VI)).
- a polymer material hydrolyzed by the aqueous medium described in the polishing cloth (1) especially, the above-mentioned formulas (III), (IV), (V) and (VI).
- the abrasive grains are uniformly dispersed and blended in the polishing layer in a range of 0.5 to 20% by weight.
- the abrasive grains have an average particle diameter of 0.02 to 0.1 m and have a spherical shape or a shape close to a spherical shape.
- the polishing cloth 2 is coated on the turntable 1.
- a supply pipe 3 for supplying the polishing composition is disposed above the polishing cloth 2.
- a substrate holder 5 having a support shaft 4 on its upper surface is arranged above the polishing cloth 2 so as to be vertically movable and rotatable. You.
- the surfactant contained in the polishing slurry or the polishing composition examples include, for example, polyethylene glycol polyester, ethylene glycol fatty acid ester, and the like.
- a nonionic surfactant such as imidazorivetaine; an anionic surfactant such as sodium dodecyl sulfate; Cationic surfactants such as stearin trimethylammonium chloride can be mentioned.
- the polishing cloth one having the same configuration as in the above (1) to (6) is used. However, when the polishing cloth of (1), (3) or (5) is used in the polishing treatment of the member to be polished, the polishing containing abrasive grains and water from the supply pipe 3 is performed. When the slurry is supplied to the polishing cloth and the polishing cloths (2), (4) and (6) are used, the slurry does not contain the abrasive grains from the supply pipe 3 but contains water, If necessary, a polishing composition containing a surfactant and a dispersant is supplied to a polishing cloth. A specific polishing method will be described below.
- a member to be polished for example, a substrate
- a holder 5 such that the surface to be polished faces the polishing cloth 2.
- the polishing slurry 7 containing abrasive grains and water is supplied from the supply pipe 3
- the member 6 to be polished is directed toward the polishing cloth 2 by the support shaft 4.
- a desired weight is applied, and the holder 5 and the turntable 1 are rotated in the same direction.
- the surface to be polished of the member to be polished 6 is polished by the abrasive grains in the polishing slurry supplied between the member to be polished 6 and the polishing cloth 2.
- the member to be polished (for example, a substrate) 6 is held by the holder 5 so that the surface to be polished faces the polishing cloth 2. Subsequently, while supplying the polishing composition containing water without containing abrasive grains from the supply pipe 3, the member 6 to be polished is desirably directed toward the polishing cloth 2 by the support shaft 4. The holder 5 and the turntable 1 are rotated in the same direction. At this time, the abrasive grains dispersed in the polishing layer of the polishing cloth are supplied between the surface to be polished of the member to be polished 6 and the polishing layer by elution of the polishing layer material. The surface to be polished of the member to be polished 6 is polished in the presence of a polishing composition containing polishing abrasive grains supplied from the polishing layer and water supplied from the supply pipe 3.
- At least one embedding member selected from recesses and openings on the substrate is formed, and a wiring material film made of copper or a copper alloy is formed on the entire surface including the embedding member.
- Examples of the substrate include a semiconductor substrate and a glass substrate.
- the embedding member is formed, for example, in an insulating film on the substrate.
- the insulating film include a silicon oxide film and a boding.
- a phosphorus-added glass film (BPSG film), a phosphorus-added glass film (PSG film), or the like can be used.
- a polishing stopper film made of silicon nitride, carbon, alumina, boron nitride, diamond, or the like is allowed to be coated on this insulating film.
- Examples of the copper-based metal include copper (Cu), Cu—Si alloy, Cu—A1 alloy, 11-31—1 alloy, and Cu—Ag alloy. It is possible to use high alloys (Cu alloy).
- the wiring material film is formed by, for example, sputtering deposition, vacuum deposition, or plating.
- a conductive parity layer before forming the wiring material film on the insulating film including the burying member on the semiconductor substrate.
- the conductive barrier layer is formed by a polishing process described later after the formation of the wiring material film.
- the burying member surrounded by the core layer at least one buried conductive member selected from a wiring layer and a via file can be formed.
- the conductive barrier layer may include, for example, TiN, Ti, Nb, W, WN, TaN, TaSiN, Ta, Co, Co, Zr, ZrN and It is made of one or more layers selected from CuTa alloy alloys.
- Such a conductive barrier layer preferably has a thickness of 15 to 50 nm.
- Step 2 By polishing the wiring material film of the substrate using the polishing apparatus described above, the copper-based metal is buried in the burying member, such as a buried wiring layer made of copper or a copper alloy. Buried conductive members are formed.
- the embedded conductive member is formed by the following two methods.
- the semiconductor substrate 6 as a member to be polished by the holder 5 is polished with a wiring material film made of a copper alloy.
- the semiconductor substrate 6, which is the member to be polished, is coated with a wiring material film made of copper or a copper alloy by the holder 5.
- the polishing slurry or polishing composition includes a water-soluble organic acid (first type) that reacts with copper to form a copper complex that is substantially insoluble in water and mechanically more fragile than copper.
- Organic acids and oxidizing agents.
- the first organic acid examples include 2-quinolinic acid (quinaldic acid), 2-pyridine carboxylic acid, 2,6-pyridine carboxylic acid, quinolinic acid and the like. it can.
- the first organic acid is preferably contained in the polishing slurry or the polishing composition in an amount of 0.1% by weight or more. When the content of the first organic acid is less than 0.1% by weight, it is difficult to sufficiently generate a copper complex that is more mechanically weaker than copper on the surface of Cu or a Cu alloy. become. As a result, it becomes difficult to sufficiently increase the polishing rate of Cu or Cu alloy during polishing.
- a more preferable content of the first organic acid is 0.3 to 1.2% by weight.
- the oxidizing agent has an effect of forming a hydrate of copper when the polishing slurry or the polishing composition is brought into contact with copper or a copper alloy.
- oxidizing agents include, for example, hydrogen peroxide (H Oxidizing agents such as 2 O 2) and sodium hypochlorite (Na CIO) can be used.
- the oxidizing agent is preferably contained in the polishing slurry or the polishing composition in a weight ratio of at least 10 times the first organic acid. If the content of the oxidizing agent is less than 10 times the weight of the first organic acid by weight, it is difficult to sufficiently promote the formation of a copper complex on the surface of Cu or a Cu alloy. become.
- the content of the oxidizing agent is more preferably at least 30 times, more preferably at least 50 times, the weight of the first organic acid.
- the polishing slurry or the polishing composition is allowed to contain an organic acid (second organic acid) having one carboxyl group or one hydroxyl group.
- the second organic acid has an action of accelerating the formation of copper hydrate by the oxidizing agent.
- a second organic acid examples include lactic acid, tartaric acid, mandelic acid, and lingoic acid, and these may be used in the form of one kind or a mixture of two or more kinds. Can be done. In particular, lactic acid is preferred.
- the second organic acid is preferably contained in the polishing slurry or the polishing composition in an amount of 20 to 250% by weight based on the first organic acid. If the content of the second organic acid is less than 20% by weight, it is difficult to sufficiently exert the effect of promoting the production of copper hydrate by the oxidizing agent. On the other hand, when the content of the second organic acid exceeds 250% by weight, a wiring material film made of copper or a copper alloy is etched, and a pattern is formed. There is a possibility that it will no longer work. A more preferable content of the second organic acid is 40 to 200% by weight based on the first organic acid. /. It is.
- the polishing cloth [polishing cloth (1)] according to the present invention has a polishing layer containing a polymer material that is hydrolyzed in an aqueous medium.
- the member to be polished and the polishing liquid are supplied.
- the polishing surface of the member to be polished is mainly polished by the polishing abrasive particles supplied between the cloths.
- the polishing cloth contains a polymer material that is hydrolyzed in an aqueous medium, the polishing cloth is supplied at a position of the polishing layer where a mechanical force is applied by pressing and sliding the member to be polished. It is hydrolyzed and dissolved by the water in the polishing slurry, and the surface of the polishing cloth is constantly updated.
- polishing cloth capable of stably polishing a member to be polished for a long time without dressing.
- a structural unit (silyl acrylate, metaacryl) based on the monomers represented by the formulas (III) and (IV) is used as a main polymer material constituting the polishing cloth.
- Acid silyl ester and
- a structural unit based on the monomers represented by the above formulas (V) and (VI) acetanolone ester and acetonitrile acid.
- the homopolymer or the copolymer having the structural unit based on the monomer represented by the formula (III), the formula (IV), the formula (V) or the formula (VI) is each in the main chain. Luster and hemiacetal ester groups are bonded, and when they are hydrolyzed, hydrophilic free carboxyl groups are regenerated, so that the polishing cloth surface is more smoothly dissolved. As a result, the renewability of the surface of the polishing pad can be further improved.
- dissolution starting from the particles also proceeds.
- the renewability of the surface can be further enhanced.
- the polishing cloth becomes water-based.
- High hydrolyzed in medium Since it contains a molecular material, it is hydrolyzed and eluted by water in the supplied polishing composition at the portion of the polishing cloth where a mechanical force is applied by pressing and sliding the member to be polished. I do.
- the abrasive grains dispersed in the polishing cloth are supplied between the member to be polished and the polishing cloth, and the automatic polishing abrasive grain supply function is provided.
- the polished surface of the member is mainly polished by the abrasive grains.
- polishing cloth is hydrolyzed and dissolved and the surface of the polishing cloth is constantly renewed, it is possible to prevent the polishing grains from accumulating and increasing on the polishing cloth surface.
- the polishing cloth is treated by the dressing tool of the dressing device to regenerate the surface after polishing the member to be polished and before polishing the next member to be polished as before.
- a relatively long time without any operation! The same polishing performance as in the initial polishing (the polishing rate is slightly lower than in the initial polishing) can be exhibited. Therefore, the material to be polished can be dressed for a long time! : A polishing cloth capable of stably polishing can be provided.
- a structural unit based on the monomer represented by the formula (III) or (IV) sil acrylate, A structural unit (acrylic acid hemiacetal ester, methacrylic acid) based on the monomer represented by the formula (V) or the formula (VI).
- a homopolymer or a copolymer having (hemi-acetal ester) can enhance the solubility of the polishing cloth by hydrolysis as described above. The particles can be supplied more smoothly, and the renewability of the polishing cloth surface is further improved. You can do it.
- the dissolution starting from the particles proceeds, so that the polishing cloth is removed from the polishing cloth.
- the grains can be supplied more smoothly, and the renewability of the polishing cloth surface can be further enhanced.
- Another polishing cloth [(3) polishing cloth] according to the present invention has a polishing layer containing a polymer material soluble in an aqueous medium.
- the member to be polished and the polishing material are polished.
- the polishing surface of the member to be polished is mainly polished by the polishing abrasive particles supplied between the cloths.
- the polishing cloth contains a polymer material soluble in an aqueous medium, the polishing cloth is supplied at a portion of the polishing layer where a mechanical force is applied by pressing and sliding contact of the member to be polished. It is dissolved by the water in the polishing slurry and the surface of the polishing cloth is constantly renewed.
- polishing cloth capable of stably polishing a member to be polished for a long time without dressing.
- the member to be polished is applied between the polishing layer and the member to be polished while a load of 300 gf Z cm 2 is applied to the member to be polished as a main polymer material constituting the polishing cloth. If the relative speed is 1.0 m / sec and the speed of dissolution in the aqueous medium is 0.01 to 10 mg / min, the solubility of the polishing cloth in the polishing process can be improved. Therefore, the renewability of the surface of the polishing pad can be further improved.
- polishing cloth is a polymer material soluble in an aqueous medium, and a ceramic oxide, manganese oxide, silica, and aluminum dispersed in the polymer material. And a polishing layer containing at least one polishing abrasive selected from the group consisting of iron and zircon.
- the polishing cloth becomes water-based. Since the medium contains a polymer material soluble in the medium, it is eluted by the water in the supplied polishing composition at the portion of the polishing cloth where a mechanical force is applied by pressing and sliding the member to be polished. I do. Therefore, the abrasive grains dispersed in the polishing cloth are supplied between the member to be polished and the polishing cloth, and have an automatic supply function of the abrasive grains.
- the polished surface of the member is mainly polished by the abrasive grains.
- polishing cloth is soluble in water and the surface of the polishing cloth is constantly renewed, it is possible to avoid the accumulation and increase of the abrasive grains on the surface of the polishing cloth.
- polishing performance equivalent to the initial polishing time for a relatively long time (the polishing speed is slightly lower than the initial polishing time) ) Can be issued. Therefore, it is possible to provide a polishing cloth capable of stably polishing a member to be polished for a long time without dressing.
- the polishing layer is placed between the polishing layer and the member to be polished. If the relative speed is 1.0 m / sec and the dissolution speed in the aqueous medium is 0.01 to 10 mg / min, the polishing cloth in the polishing process can be used. Since the solubility can be further increased, the abrasive grains can be supplied more smoothly from the polishing cloth, and the renewability of the polishing cloth surface can be further improved. .
- Polishing cloth has a polishing layer whose surface does not elute under non-frictional force in the presence of an aqueous medium and whose surface elutes under frictional force.
- the member to be polished is When a polishing slurry containing abrasive grains and water is supplied to the polishing cloth while pressing and rotating the member to be polished against the polishing cloth having such a configuration, the member to be polished is When the polished surface of the member to be polished is mainly polished by the abrasive grains supplied between the polishing pad and the polishing cloth, the polishing cloth is pressed by the member to be polished and slidably contacted. At the location of the polishing layer where a mechanical force (frictional force) is applied, it elutes in the presence of water in the supplied polishing slurry, and the surface of the polishing cloth is constantly updated.
- the polishing cloth (polishing layer) surface It is possible to prevent the abrasive grains in the polishing slurry from accumulating and increasing. As a result, an operation of treating a polishing cloth with a dressing tool of a dressing device to regenerate the surface thereof before polishing the next member to be polished after polishing the member to be polished as in the related art is performed. Without polishing, the same polishing performance as in the initial polishing (the polishing rate is slightly lower than in the initial polishing) can be exhibited for a relatively long time. Therefore, it is possible to provide a polishing cloth capable of stably polishing a member to be polished for a long time without dressing.
- Still another polishing cloth according to the present invention [(6) polishing cloth] is at least selected from the group consisting of cerium oxide, manganese oxide, silica, alumina and zirconium. Also contains one abrasive grain dispersedly, the surface does not elute under the non-frictional force in the presence of the aqueous medium, and the surface elutes under the frictional force, and the abrasive grains are also applied to the surface.
- a polishing layer to be supplied is provided at least on the side where the member to be polished contacts.
- the polishing cloth While pressing and rotating the member to be polished against the polishing cloth having such a configuration and supplying the polishing composition containing water without containing abrasive grains to the polishing cloth, the polishing cloth becomes At the location of the polishing cloth where a mechanical force (frictional force) is applied by pressing and sliding contact of the member to be polished, the material is eluted in the presence of water in the supplied polishing composition. For this reason, the abrasive surface dispersed in the polishing cloth is supplied between the member to be polished and the polishing cloth, and the polishing surface of the member to be polished is provided by having an automatic supply function of the abrasive particles. Are mainly polished by the abrasive grains.
- the polishing cloth is eluted by the frictional force in the presence of water, and the surface of the polishing cloth is constantly renewed. Therefore, it is possible to prevent the polishing abrasive grains from accumulating and increasing on the polishing cloth surface.
- the polishing cloth is treated with a dressing tool of a dressing device to regenerate the surface. Indeed, it is possible to exhibit polishing performance equivalent to that in the initial stage of polishing (the polishing rate is slightly lower than in the initial stage of polishing) for a relatively long time. Therefore, it is possible to provide a polishing cloth capable of stably polishing a member to be polished for a long time without dressing.
- the polishing apparatus comprises: a rotary table on which a polishing cloth having a polishing layer having the above-described configuration (1), (3), or (5) is mounted; and a vertically movable table above the rotary table.
- the rotating table is rotatably arranged, holds the member to be polished, and rotates in the same direction as the rotating table for pressing the member to be polished against the polishing cloth of the rotating table with a desired load.
- a polishing slurry supply means for supplying a polishing slurry containing abrasive grains to the polishing cloth.
- polishing apparatus according to t present invention that can have a this to exhibit polishing performance, oxidation cell re ⁇ beam, oxidation manganese, silica mosquitoes, also one abrasive and less selected from the group consisting of alumina and Jirukonia (2), (4),
- a turntable having a polishing cloth having a polishing layer having the structure of (6) attached to a surface thereof; and a vertically movable table above the turntable.
- a rotating member for holding the member to be polished and pressing the member to be polished against the polishing cloth of the rotating table with a desired load in the same direction as the rotating table.
- a polishing composition supplying means for supplying a polishing composition containing at least water without containing abrasive grains in the polishing cloth.
- the polishing cloth has the function of automatically supplying abrasive grains, and exhibits stable polishing performance over a relatively long period of time without dressing. can do.
- the method for manufacturing a semiconductor device is characterized in that the insulating film on the semiconductor substrate has at least one embedded portion selected from a groove corresponding to the shape of the wiring layer and an opening corresponding to the shape of the via file.
- Bilsilyl atalylate compound of the formula (III-14) above
- 2-ethoxyl methyl methacrylate 15.0 parts by weight methinolate methacrylate 20.0 parts by weight
- n-butyl methacrylate 5.0 parts by weight and polymerization catalyst perbutyl I (trade name, manufactured by NOF Corporation, trade name: t-butylperoxyi isopropyl carbonate) 1.0 weight
- An amount of the mixed solution was dropped into the flask over 3 hours, and after completion of the drop, the mixture was kept at the same temperature for 30 minutes.
- the obtained copolymer had a number average molecular weight of 67,000 and a glass transition temperature of 56 ° C.
- the unit of ⁇ click Li Le acid Siri Ruesu Tel occupying the copolymer of this is 6 0 wt 0/0 der ivy.
- composition ratio is shown by weight%.
- the obtained copolymer had a number average molecular weight of 38,000 and a glass transition temperature of 50 ° C.
- the unit of methacrylic acid hemi-acetal ester occupied in this copolymer is 43. 7%
- composition ratio indicates weight%.
- the number average molecular weight of the obtained polymer was 21,000, and the glass transition temperature was 35 ° C.
- the number average molecular weight of the obtained polymer was 17,000, and the glass transition temperature was 44 ° C.
- a polishing slurry was prepared by dispersing cerium oxide abrasive particles having an average particle size of 0.2 ⁇ in 0.5% by weight in pure water.
- a 20 mm square silicon substrate on which a silicon oxide film was formed was prepared.
- the silicon substrate 6 was placed on the substrate holder 5 of the polishing apparatus shown in FIG.
- the Ri by the support shaft 4 of the holder 5 c E c 6 to about 3 0 to the polishing cloth 2 on the turntable 1
- the polishing slurry was rotated while rotating the turntable 1 and the holder 5 in the same direction at a speed of 100 rpm and a speed of 103 rpm, respectively.
- the surface of the silicon substrate was the same as in Example 1, except that hard foamed polyurethane (trade name, manufactured by Rodel; IC100) was used as the polishing cloth incorporated in the polishing apparatus.
- the silicon oxide film was polished for 60 minutes.
- Example 1 in which a silicon oxide film on a silicon substrate was polished by a polishing apparatus provided with a polishing cloth made of a copolymer having the structural formula represented by the formula (X), Polishing rate decreases slightly with the passage of polishing time, but 60 minutes from initial polishing rate It can be seen that the polishing rate decreased only by 10% after a lapse of time, indicating a stable polishing rate.
- a 50% xylene solution of the copolymer having the structural formula shown in Formula (XI) synthesized in Synthesis Example 2 above was cast on a turntable, and then dried. A polishing pad having a thickness of 5 Oim was formed. The turntable covered with the polishing cloth was incorporated into the polishing apparatus shown in Fig. 1 described above.
- a silicon substrate of 20 mm square having a silicon oxide film formed thereon was prepared. Subsequently, after the silicon substrate 6 was held on the substrate holder 5 of the polishing apparatus shown in FIG. 1 so that the oxide film thereof was opposed to the polishing cloth 2 on the turntable 1, the embodiment 1 was replaced with the embodiment 1. The silicon oxide film on the surface of the silicon substrate 6 was polished by the same method.
- the dressing to shape the surface of the polishing cloth is a # 80 damper electrodeposition dresser, with a load of 200 g / cm2 and a turn tape rotation speed of 160 rpm.
- a silicon substrate of 25 mm square with a silicon oxide film (P-TEOS film) formed was prepared.
- the silicon substrate 6 was held on the substrate holder 5 of the polishing apparatus shown in FIG. 1 so that the oxide film thereof was opposed to the polishing cloth 2 on the turntable 1.
- the silicon substrate 6 was applied to the polishing cloth 2 on the turntable 1 by the support shaft 4 of the holder 5 to apply a load of about 300 g / cm2 to the turntable 1 and the holder 5.
- a polishing slurry was supplied from the supply pipe 3 to the polishing cloth 2 at a rate of 20 m 1 / min to polish a silicon oxide film on the surface of the silicon substrate 6.
- the polymer soluble in the aqueous medium (acrylic acid Z acrylic acid mesylate) synthesized in Example 3 above was applied to the polishing surface of IC100 / Suba_400, trade name of Kuchidale Corporation.
- Toxityl copolymer) 5 A 0% xylene solution was applied to a thickness of 55 ⁇ m and then dried to form a polishing cloth. The turntable covered with this polishing cloth was incorporated into the polishing apparatus shown in Fig. 1 described above.
- a silicon substrate of 25 mm square on which a silicon oxide film (P-TEOS film) was formed was prepared. Subsequently, after the silicon substrate 6 was held on the substrate holder 5 of the polishing apparatus shown in FIG. 1 so that the oxide film thereof was opposed to the polishing cloth 2 on the turntable 1, the third embodiment was carried out. The silicon oxide film on the surface of the silicon substrate 6 was polished by the same method as described above.
- the dressing used to adjust the surface shape of the polishing cloth is a # 80 damper electrodeposition dresser with a load of 200 g / cm2 and a turntable rotation speed of 160 rpm. in result of c its performing the dressing, and intends row for more than five minutes de LESSON Shin grayed, Make a call to Ken polishing speed of the oxide film is Ru can be stable and polished by about 5 0 nm / min Roh.
- a 0% xylene solution was applied to a thickness of 70 ⁇ , and then dried to form a polishing cloth.
- the turntable covered with the polishing cloth was incorporated into the polishing apparatus shown in Fig. 1 described above.
- a 25 mm square silicon substrate on which a silicon oxide film ((-TEOS film) was formed was prepared.
- the silicon base is placed on the substrate holder 5 of the polishing apparatus shown in FIG. After holding the plate 6 so that the oxide film thereof faces the polishing cloth 2 on the turntable 1, the silicon oxide film on the surface of the silicon substrate 6 is formed in the same manner as in the third embodiment. Was polished.
- the dressing used to adjust the surface shape of the polishing pad was a # 80 damper electrodeposition dresser with a load of 200 g / cm2 and a turntable rotation speed of 160 rpm.
- the c the result of dressing and intends row over 5 minutes dressing, stable Make p 'and this that can be polished, the teeth / child Migaku Ken rate of the oxide film is about 5 0 nm / min.
- Copolymer having units of silyl acrylate synthesized in Synthesis Example 1 above on the polished surface of IC100 / Suba-400, trade name of Kuchidale Corporation, and copolymers thereof the average particle size of 0 for polymers.
- an oxide cell re ⁇ beam abrasive grains 2 mu m 3 was weight 0/0 disperse 5
- a 0% xylene solution was applied to a thickness of about 50 ⁇ m and then dried to form a polishing cloth.
- the turntable covered with this polishing cloth was incorporated into the polishing apparatus shown in Fig. 1 described above.
- a silicon substrate of 25 mm square with a silicon oxide film (P-TEOS film) formed was prepared. Subsequently, the silicon substrate 6 was held on the substrate holder 5 of the polishing apparatus shown in FIG. 1 so that the oxide film thereof was opposed to the polishing cloth 2 on the turntable 1. Next, the support shaft of the holder 5 will be described.
- P-TEOS film silicon oxide film
- the surface of the polishing pad shape adjust the de LESSON Sing in da I turbocharger mode emission de electrodeposition Dore Tsu Sa # 8 0, the load 2 0 0 g / cm 2, terpolymers integrators one table rotation speed 1 6 0 rpm of As a result, the oxide film was polished after dressing was performed for 10 seconds, and the polishing composition did not contain abrasive grains. In addition, it was confirmed that the oxide film could be polished at a speed of about 4 nm Z min.
- Copolymer having units of silyl acrylate synthesized in Synthesis Example 1 above on the polished surface of IC1000 / Suba-400, trade name of Kuchidale Corporation, and copolymers thereof after an average particle size of 0. 6
- theta Aluminum na abrasive grains 3 weight 0/0 dispersed allowed a 50% xylene solution having a thickness of about 5 0 mu m coating of m relative to the polymer, polished and dried A cloth was formed.
- the turntable covered with this polishing cloth was incorporated into the polishing device shown in Fig. 1 described above.
- a 25 mm square silicon substrate on which a Cu film was formed was prepared.
- the silicon substrate 6 was held on the substrate holder 5 of the polishing apparatus shown in FIG. 1 so that the Cu of the silicon substrate 6 was opposed to the polishing cloth 2 on the turntable 1.
- the silicon substrate 6 was loaded on the polishing cloth 2 on the turntable 1 by the support shaft 4 of the holder 5 with a load of about 300 g Zcm 2 .
- the polishing composition is supplied from the supply pipe 3 at a rate of 20 m 1 / min.
- the silicon oxide film on the surface of the silicon substrate 6 was polished by supplying the polishing pad 2 to the polishing pad 2 at the above speed.
- the polishing composition contained 0.5% by weight of quinaldic acid, 0.6% by weight of lactic acid, 0.9% by weight of a surfactant and 4.3% by weight of a hydrogen peroxide solution. /. Was used.
- the dressing for adjusting the polishing cloth surface shape is a # 80 damper electrodeposition dresser, with a load of 200 g Z cm2 and a turntable rotation speed of 160 rpm.
- the Cu film was polished after the dressing was performed for 10 seconds, and although the polishing composition contained no abrasive grains, the polishing composition did not contain abrasive grains. It was confirmed that the Cu film could be polished at a speed of about 11 nmZmin.
- an interlayer insulating film is formed by CVD on a silicon substrate 21 on which a diffusion layer such as a source and a drain (not shown) is formed on the surface.
- a diffusion layer such as a source and a drain (not shown) is formed on the surface.
- S i O 2 film 2 2 having a thickness of 1 0 0 O nm and the S i 0 2 film 2
- a plurality of grooves 23 having a width lOOm and a depth of 0.8111 having a shape corresponding to a wiring layer were formed by a photo-etching technique.
- a TiN force having a thickness of 15 nm is formed on the SiO 2 film 22 including the groove 23 by sputtering evaporation.
- a rear layer 24 and a Cu film 25 having a thickness of 1.6 ⁇ m were formed in this order.
- the polishing shown in FIG. 1 provided with a turntable whose surface was covered with a 0.8 mm-thick polishing cloth made of a copolymer having the same structural formula shown in Chemical Formula 41 as in Example 1.
- the silicon substrate 21 on which the Cu film 25 is formed on the substrate holder 5 is turned upside down using an apparatus such that the Cu film 25 faces the polishing cloth 2 side.
- the silicon substrate 21 is applied to the polishing pad 2 by the support shaft 4 with a load of 500 gf / cm 2, and the turntable 1 and the holder 5 are respectively attached to the polishing pad 2.
- the polishing slurry is supplied from the supply pipe 3 to the polishing cloth 2 at a rate of 5 OmL / min.
- the Cu film 25 and the barrier layer 24 are polished for about 40 minutes until the surface of the SiO 2 film 22 is exposed, excluding the groove 23.
- Ambient Remind as in 3 (C) is a semiconductor device was manufactured by forming a buried C u interconnection layer 2 6 wrapped in Bali ⁇ layer 2 4.
- ADVANTAGE OF THE INVENTION According to this invention, it has an automatic supply function of an abrasive grain, It is possible to provide a polishing cloth that can exhibit stable polishing performance for a relatively long time without performing lessting.
- a polishing apparatus provided with the above-mentioned polishing cloth having stable polishing performance and useful for chemical mechanical polishing (CMP) for forming an embedded conductive material such as an embedded wiring layer of a semiconductor device. They are trying to do so.
- CMP chemical mechanical polishing
- a conductive member such as a high-precision embedded wiring layer is stably formed on at least one embedding member selected from a groove and an opening in an insulating film on a semiconductor substrate. It is possible to provide a method of manufacturing a semiconductor device capable of performing the above.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (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)
- Polishing Bodies And Polishing Tools (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01974671A EP1326267A4 (en) | 2000-10-12 | 2001-10-03 | RUBBER, POLISHING DEVICE AND METHOD FOR PRODUCING A SEMICONDUCTOR CONSTRUCTION ELEMENT |
KR1020037005109A KR100646721B1 (ko) | 2000-10-12 | 2001-10-03 | 연마천, 연마 장치 및 반도체 장치의 제조 방법 |
US10/412,298 US7112125B2 (en) | 2000-10-12 | 2003-04-14 | Polishing cloth, polishing apparatus and method of manufacturing semiconductor devices |
US11/505,464 US20060276113A1 (en) | 2000-10-12 | 2006-08-17 | Polishing cloth, polishing apparatus and method of manufacturing semiconductor devices |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000-312288 | 2000-10-12 | ||
JP2000312288 | 2000-10-12 | ||
JP2001210856A JP2002190460A (ja) | 2000-10-12 | 2001-07-11 | 研磨布、研磨装置および半導体装置の製造方法 |
JP2001-210856 | 2001-07-11 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/412,298 Continuation US7112125B2 (en) | 2000-10-12 | 2003-04-14 | Polishing cloth, polishing apparatus and method of manufacturing semiconductor devices |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002031874A1 true WO2002031874A1 (fr) | 2002-04-18 |
Family
ID=26601980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2001/008717 WO2002031874A1 (fr) | 2000-10-12 | 2001-10-03 | Toile abrasive, dispositif de polissage et procede pour fabriquer un dispositif a semiconducteur |
Country Status (7)
Country | Link |
---|---|
US (2) | US7112125B2 (ja) |
EP (1) | EP1326267A4 (ja) |
JP (1) | JP2002190460A (ja) |
KR (1) | KR100646721B1 (ja) |
CN (1) | CN1237582C (ja) |
TW (1) | TW538471B (ja) |
WO (1) | WO2002031874A1 (ja) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040224622A1 (en) * | 2003-04-15 | 2004-11-11 | Jsr Corporation | Polishing pad and production method thereof |
JP4342918B2 (ja) | 2003-11-28 | 2009-10-14 | 株式会社東芝 | 研磨布および半導体装置の製造方法 |
JP2008053361A (ja) | 2006-08-23 | 2008-03-06 | Toshiba Corp | 半導体記憶装置及び半導体記憶装置の製造方法 |
JP5204960B2 (ja) * | 2006-08-24 | 2013-06-05 | 株式会社フジミインコーポレーテッド | 研磨用組成物及び研磨方法 |
US7635290B2 (en) | 2007-08-15 | 2009-12-22 | Rohm And Haas Electronic Materials Cmp Holdings, Inc. | Interpenetrating network for chemical mechanical polishing |
KR100879271B1 (ko) * | 2007-10-15 | 2009-01-19 | 한국전자통신연구원 | 유기 절연막 및 그 형성 방법, 이를 이용한 유기 박막트랜지스터 |
US20110318928A1 (en) * | 2010-06-24 | 2011-12-29 | Jinru Bian | Polymeric Barrier Removal Polishing Slurry |
JP6717706B2 (ja) * | 2015-08-26 | 2020-07-01 | 株式会社東京精密 | ウェハの表面処理装置 |
JP6963075B2 (ja) * | 2016-08-26 | 2021-11-05 | 株式会社東京精密 | ウェハの表面処理装置 |
Citations (4)
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JPH03277465A (ja) * | 1990-03-23 | 1991-12-09 | Fujimi Kenmazai Kougiyou Kk | 研磨方法及びこれに用いる研磨パッド |
US5976000A (en) * | 1996-05-28 | 1999-11-02 | Micron Technology, Inc. | Polishing pad with incompressible, highly soluble particles for chemical-mechanical planarization of semiconductor wafers |
JP2000033552A (ja) * | 1998-05-11 | 2000-02-02 | Toshiba Corp | 研磨布及びこの研磨布を用いた半導体装置の製造方法 |
JP2000034416A (ja) * | 1998-05-15 | 2000-02-02 | Jsr Corp | 重合体組成物および研磨パッド |
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US4576612A (en) * | 1984-06-01 | 1986-03-18 | Ferro Corporation | Fixed ophthalmic lens polishing pad |
US4927432A (en) * | 1986-03-25 | 1990-05-22 | Rodel, Inc. | Pad material for grinding, lapping and polishing |
US4871376A (en) * | 1987-12-14 | 1989-10-03 | Minnesota Mining And Manufacturing Company | Resin systems for coated products; and method |
US5213589A (en) * | 1992-02-07 | 1993-05-25 | Minnesota Mining And Manufacturing Company | Abrasive articles including a crosslinked siloxane, and methods of making and using same |
MY114512A (en) * | 1992-08-19 | 2002-11-30 | Rodel Inc | Polymeric substrate with polymeric microelements |
JPH06157940A (ja) | 1992-11-17 | 1994-06-07 | Nippon Oil & Fats Co Ltd | 防汚性塗料組成物及びそれを用いた防汚性塗膜の形成方法 |
US6139594A (en) * | 1998-04-13 | 2000-10-31 | 3M Innovative Properties Company | Abrasive article with tie coat and method |
US6656018B1 (en) * | 1999-04-13 | 2003-12-02 | Freudenberg Nonwovens Limited Partnership | Polishing pads useful in chemical mechanical polishing of substrates in the presence of a slurry containing abrasive particles |
US7037992B2 (en) * | 1999-09-29 | 2006-05-02 | Sri International | Olefin copolymers containing hydrolytically cleavable linkages and use thereof in degradable products |
KR20020072548A (ko) * | 1999-12-14 | 2002-09-16 | 로델 홀딩스 인코포레이티드 | 중합체 연마 패드 또는 중합체 복합재 연마 패드의 제조방법 |
US6561891B2 (en) * | 2000-05-23 | 2003-05-13 | Rodel Holdings, Inc. | Eliminating air pockets under a polished pad |
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2001
- 2001-07-11 JP JP2001210856A patent/JP2002190460A/ja active Pending
- 2001-10-03 EP EP01974671A patent/EP1326267A4/en not_active Withdrawn
- 2001-10-03 CN CNB018185649A patent/CN1237582C/zh not_active Expired - Fee Related
- 2001-10-03 KR KR1020037005109A patent/KR100646721B1/ko not_active IP Right Cessation
- 2001-10-03 WO PCT/JP2001/008717 patent/WO2002031874A1/ja active Application Filing
- 2001-10-08 TW TW090124859A patent/TW538471B/zh not_active IP Right Cessation
-
2003
- 2003-04-14 US US10/412,298 patent/US7112125B2/en not_active Expired - Fee Related
-
2006
- 2006-08-17 US US11/505,464 patent/US20060276113A1/en not_active Abandoned
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JPH03277465A (ja) * | 1990-03-23 | 1991-12-09 | Fujimi Kenmazai Kougiyou Kk | 研磨方法及びこれに用いる研磨パッド |
US5976000A (en) * | 1996-05-28 | 1999-11-02 | Micron Technology, Inc. | Polishing pad with incompressible, highly soluble particles for chemical-mechanical planarization of semiconductor wafers |
JP2000033552A (ja) * | 1998-05-11 | 2000-02-02 | Toshiba Corp | 研磨布及びこの研磨布を用いた半導体装置の製造方法 |
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Also Published As
Publication number | Publication date |
---|---|
CN1237582C (zh) | 2006-01-18 |
US20060276113A1 (en) | 2006-12-07 |
CN1473358A (zh) | 2004-02-04 |
KR100646721B1 (ko) | 2006-11-17 |
EP1326267A4 (en) | 2008-10-01 |
US20030199230A1 (en) | 2003-10-23 |
EP1326267A1 (en) | 2003-07-09 |
TW538471B (en) | 2003-06-21 |
JP2002190460A (ja) | 2002-07-05 |
KR20030036921A (ko) | 2003-05-09 |
US7112125B2 (en) | 2006-09-26 |
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