WO2006073156A1 - 研磨用スラリー - Google Patents
研磨用スラリー Download PDFInfo
- Publication number
- WO2006073156A1 WO2006073156A1 PCT/JP2006/300036 JP2006300036W WO2006073156A1 WO 2006073156 A1 WO2006073156 A1 WO 2006073156A1 JP 2006300036 W JP2006300036 W JP 2006300036W WO 2006073156 A1 WO2006073156 A1 WO 2006073156A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- polishing
- film
- slurry
- silica
- polishing slurry
- Prior art date
Links
- 238000005498 polishing Methods 0.000 title claims abstract description 193
- 239000002002 slurry Substances 0.000 title claims abstract description 90
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 125
- 239000008119 colloidal silica Substances 0.000 claims abstract description 46
- 229910021485 fumed silica Inorganic materials 0.000 claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 claims abstract description 37
- 239000002184 metal Substances 0.000 claims abstract description 37
- 239000006061 abrasive grain Substances 0.000 claims abstract description 28
- 239000007800 oxidant agent Substances 0.000 claims abstract description 17
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 17
- 239000000126 substance Substances 0.000 claims description 14
- 239000000758 substrate Substances 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 5
- 230000003628 erosive effect Effects 0.000 abstract description 24
- 239000004065 semiconductor Substances 0.000 abstract description 15
- 229910052721 tungsten Inorganic materials 0.000 abstract description 13
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract description 11
- 239000010937 tungsten Substances 0.000 abstract description 11
- 235000012239 silicon dioxide Nutrition 0.000 abstract description 2
- 229910052681 coesite Inorganic materials 0.000 abstract 1
- 229910052906 cristobalite Inorganic materials 0.000 abstract 1
- 229910052682 stishovite Inorganic materials 0.000 abstract 1
- 229910052905 tridymite Inorganic materials 0.000 abstract 1
- 239000010408 film Substances 0.000 description 150
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 63
- 235000012431 wafers Nutrition 0.000 description 41
- 230000007547 defect Effects 0.000 description 23
- 230000000052 comparative effect Effects 0.000 description 20
- 238000010586 diagram Methods 0.000 description 18
- 239000006185 dispersion Substances 0.000 description 17
- 239000002245 particle Substances 0.000 description 14
- 238000011156 evaluation Methods 0.000 description 10
- JLKDVMWYMMLWTI-UHFFFAOYSA-M potassium iodate Chemical compound [K+].[O-]I(=O)=O JLKDVMWYMMLWTI-UHFFFAOYSA-M 0.000 description 9
- 239000001230 potassium iodate Substances 0.000 description 9
- 235000006666 potassium iodate Nutrition 0.000 description 9
- 229940093930 potassium iodate Drugs 0.000 description 9
- 239000010936 titanium Substances 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 8
- 239000000243 solution Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000005259 measurement Methods 0.000 description 5
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 150000007522 mineralic acids Chemical class 0.000 description 4
- 150000007524 organic acids Chemical class 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 235000005985 organic acids Nutrition 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000012788 optical film Substances 0.000 description 2
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 description 2
- GDDNTTHUKVNJRA-UHFFFAOYSA-N 3-bromo-3,3-difluoroprop-1-ene Chemical compound FC(F)(Br)C=C GDDNTTHUKVNJRA-UHFFFAOYSA-N 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 239000006172 buffering agent Substances 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- QFWPJPIVLCBXFJ-UHFFFAOYSA-N glymidine Chemical compound N1=CC(OCCOC)=CN=C1NS(=O)(=O)C1=CC=CC=C1 QFWPJPIVLCBXFJ-UHFFFAOYSA-N 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- ICIWUVCWSCSTAQ-UHFFFAOYSA-N iodic acid Chemical class OI(=O)=O ICIWUVCWSCSTAQ-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- MVFCKEFYUDZOCX-UHFFFAOYSA-N iron(2+);dinitrate Chemical compound [Fe+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MVFCKEFYUDZOCX-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036651 mood Effects 0.000 description 1
- NALMPLUMOWIVJC-UHFFFAOYSA-N n,n,4-trimethylbenzeneamine oxide Chemical compound CC1=CC=C([N+](C)(C)[O-])C=C1 NALMPLUMOWIVJC-UHFFFAOYSA-N 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- -1 peroxide compounds Chemical class 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 229910000160 potassium phosphate Inorganic materials 0.000 description 1
- 235000011009 potassium phosphates Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 239000011163 secondary particle Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 235000015281 sodium iodate Nutrition 0.000 description 1
- 239000011697 sodium iodate Substances 0.000 description 1
- 229940032753 sodium iodate Drugs 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000011077 uniformity evaluation Methods 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 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
- 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
- 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
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F3/00—Brightening metals by chemical means
- C23F3/04—Heavy metals
- C23F3/06—Heavy metals with acidic solutions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/30625—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 potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/31051—Planarisation of the insulating layers
- H01L21/31053—Planarisation of the insulating layers involving a dielectric removal step
-
- 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]
Definitions
- the present invention relates to a polishing slurry used for CMP (Chemical Mechanical Polishing).
- CMP has become an indispensable technology for, for example, planarization of interlayer insulating films, formation of plugs in via holes, formation of buried metal wirings, etc. (for example, JP 2004-193495 A). No. publication).
- the formation of the buried metal wiring using CMP will be described with reference to FIG.
- a concave groove for wiring formation in the insulating film 10 such as an oxide film formed on the semiconductor substrate
- titanium nitride (TiN) or the like is formed over the entire surface of the insulating film 10.
- a barrier metal film 11 is deposited, and then a wiring metal film 12 made of tungsten (W) or the like is deposited over the entire surface of the noble metal film 11 so as to fill the trench.
- the polishing rate (polishing rate) for the metal film for wiring is high as polishing slurry. Since polishing is performed using a slurry, for example, a slurry containing fumed silica as polishing abrasive grains, as shown in FIG. 15, the central portion of the wide embedded wiring 12 is polished in a region having a large groove width. In a region where the so-called datesing occurs or the grooves are dense, so-called erosion occurs in which the insulating film 10 around the narrow buried wiring 12 and the surrounding insulating film 10 are simultaneously polished. .
- the present invention has been made in view of the above-described problems, and an object of the present invention is to provide a polishing slurry that can reduce erosion by datesing.
- the present invention is configured as follows.
- the polishing slurry of the present invention is a polishing slurry used for chemical mechanical polishing, and contains an oxidizing agent and two or more kinds of abrasive grains.
- the abrasive grains contain fumed silica and colloidal silica as the two or more kinds of abrasive grains which are preferably silica abrasive grains.
- the fumed silica is preferably composed of secondary particles, and the colloidal silica is preferably composed of primary particles.
- the polishing rate for the metal film is high, fumed silica, and the insulating film.
- the polishing rate ratio (selection ratio) for metal film and insulating film (oxide film) can be selected. Therefore, erosion can be reduced by dishing compared to the conventional example.
- it contains an acid and has a pH power of 6 or less. More preferably, the pH is 2 or more and 4 or less.
- the mixing ratio of the colloidal silica to the total amount of both fumed silica and colloidal silica is 1% or more and 99% or less.
- the mixing ratio is 10% or more and 90%, and more preferably 20% or more and 70% or less.
- the lower limit of the mixing ratio may be 50% or more.
- the polishing rate ratio (selection ratio) can be selected based on the mixing ratio of the colloidal silica to the fumed silica, and the polishing rate for the metal film and the insulating film can be controlled.
- FIG. 1 is a schematic configuration diagram of a CMP apparatus for carrying out a chemical mechanical polishing method according to one embodiment of the present invention.
- FIG. 2 is a partially enlarged sectional view of the semiconductor wafer of FIG.
- FIG. 3 is a diagram showing the polishing characteristics of the polishing slurry according to the embodiment of the present invention.
- FIG. 4 is a graph showing the relationship between pH and polishing rate.
- FIG. 5 is a diagram showing the polishing rate when each polishing slurry in Study Example 2 is used.
- Figure 6 shows the occurrence of the SiO film polished using each polishing slurry in Study Example 2.
- FIG. 7 is a diagram showing the uniformity of the W film when the W film is polished using each polishing slurry in Study Example 2.
- FIG. 8 shows the relationship between the polishing rate and the distance from the center of the wafer.
- FIG. 9 is a diagram showing the polishing rate when using the example and the comparative example.
- FIG. 10 is a diagram showing the count number of defects when using the example and the comparative example.
- FIG. 11 is a diagram illustrating the amount of date when using the example and the comparative example.
- FIG. 12 is a diagram showing the amount of erosion when the example and the comparative example are used.
- FIG. 13 is a diagram showing the recess amount when the example and the comparative example are used.
- FIG. 14 is a partially enlarged cross-sectional view of a semiconductor wafer for explaining the formation of the buried metal wiring using the chemical mechanical polishing method.
- FIG. 15 is a diagram showing dating and erosion.
- FIG. 1 is a schematic configuration diagram of a CMP polishing apparatus using a polishing slurry according to an embodiment of the present invention.
- a polishing slurry 3 according to the present invention is continuously supplied from a slurry supply nozzle 4 to a polishing pad 2 attached to the surface of the surface plate 1.
- a semiconductor wafer 5 as an object to be polished is held by a polishing head 6 via a backing film 7. When a load is applied to the polishing head 6, the semiconductor wafer 5 is pressed against the polishing pad 2.
- the polishing slurry 3 supplied onto the polishing pad 2 spreads on the polishing pad 2 and reaches the semiconductor wafer 5.
- the surface plate 1 and the polishing head 6 rotate in the same direction as indicated by an arrow A and move relative to each other, and the polishing slurry 3 enters between the polishing pad 2 and the semiconductor wafer 5 to perform polishing.
- Reference numeral 8 denotes a dresser for conspicuous the surface of the polishing pad 2.
- FIG. 2A is a partial cross-sectional view showing an example of a semiconductor wafer 5 that is an object to be polished.
- an insulating film made of silicon dioxide SiO is an oxide film on the wafer substrate.
- a film 10 is formed, and a groove or a via hole is selectively formed in the insulating film 10, and the insulating film 1
- barrier metal film 11 made of titanium Ti and titanium nitride TiN is deposited. afterwards
- the semiconductor wafer 5 thus formed is mounted on the polishing head 6 of FIG. 1 with the wiring metal film 12 side down, and polishing is performed.
- the polishing slurry of this embodiment is a slurry of an aqueous medium containing an oxidizing agent and containing fumed silica and colloidal silica as two or more kinds of abrasive grains.
- the oxidizing agent examples include peroxide compounds such as hydrogen peroxide and ammonium perchlorate, and iodate compounds such as iodic acid, potassium iodate and sodium iodate.
- the oxidizing agent is preferably contained in an amount of 0.1 to 7% by weight, more preferably 0.5 to 4% by weight, based on the polishing slurry.
- the polishing slurry preferably contains an acid for adjusting pH, and the acid is not particularly limited, and known inorganic acids and organic acids can be used.
- inorganic acids such as hydrochloric acid, nitric acid, sulfuric acid, hydrofluoric acid, and carbonic acid and organic acids such as acetic acid, citrate, malonic acid, and adipic acid are preferred from the viewpoint of further improving the polishing ability of the polishing slurry.
- Hydrochloric acid and the like are particularly preferable.
- One inorganic acid and one organic acid may be used alone, or two or more may be used in combination.
- one or more inorganic acids can be used in combination with one or more organic acids.
- the polishing slurry has a pH of preferably 1 to 6, more preferably 2 to 4, particularly preferably 2 to 3.
- the pH is in the acidic range of 1-6, the polishing ability of colloidal silica is maximized. This pH range can be easily achieved by appropriately changing the acid content.
- fumed silica and colloidal silica contain 1 to 50% by weight, more preferably 1 to 40% by weight, based on the polishing slurry. More preferably, it is 2 to 15% by weight.
- the mixing ratio (weight ratio) of the colloidal silica to the total amount of both fumed silica and colloidal silica is preferably 1% or more and 99% or less, more preferably the mixing ratio is It is 10% or more and 90%, and more preferably 20% or more and 70% or less. Further, the lower limit of the mixing ratio may be 50% or more.
- abrasive grains other abrasive grains such as alumina, ceria, titania, etc. may be added in addition to silica.
- a buffering agent such as potassium phosphate may be added.
- This polishing slurry may contain one or more of various additives conventionally used in polishing slurries in CMP processing as long as the preferred characteristics are not impaired.
- this additive include dispersants such as ammonium polycarboxylate, water-soluble alcohols such as ethanol, propanol, isopropanol, ethylene glycol, and glycerol, surfactants, viscosity modifiers, and iron nitrate.
- the polishing slurry contains an oxidizer, and as a polishing abrasive, fumed silica Since it contains high strength, it has a high polishing rate for metal films such as tungsten and copper, while it contains colloidal silica as abrasive grains.
- the polishing rate ratio (selection ratio) can be reduced to approximately 1, for example.
- the metal film for wiring is polished too much compared to the insulating film, erosion can be reduced.
- a polishing solution in which a fumed silica aqueous solution with a solid content of 5% by weight and a colloidal silica aqueous solution with a solid content of 5% by weight are mixed in a ratio of 3: 1, 2: 1, 1: 1, 1: 2, respectively.
- Each wafer was prepared, and each wafer was prepared with a tungsten film W and a silicon oxide film SiO on the surface by adjusting each of the slurry for polishing using only fumed silica force without mixing the aqueous solution and only colloidal silica. Polishing test
- Each polishing slurry contained 4% by weight of hydrogen peroxide as an oxidizing agent, 1% of 1 (molZL) of hydrochloric acid, and a pH of 2.
- the polishing conditions were a load of 300 g / cm 2 , a platen rotation speed of 50 rpm, a polishing head (carrier) rotation speed of 5 Orpm, and a polishing slurry flow rate of 300 ml / min.
- polishing rate of the tungsten film was measured at multiple points using a specific resistance measuring instrument (RS35c, manufactured by Tencor), and the film thickness of the tungsten film was calculated from the average value, and was measured from the change in film thickness. .
- the polishing rate of the SiO film is determined by the optical film thickness meter (Nano spec / AFT5
- the thickness of the SiO film is determined.
- Figure 3 shows the measurement results.
- the horizontal axis in FIG. 3 indicates the mixing ratio (%) of the colloidal silica force to the entire silica abrasive grains of fumed silica and colloidal silica, and the left vertical axis indicates the polishing rate (nm / min).
- the right vertical axis is , Which shows the selectivity (W polishing rate / SiO polishing rate) c
- the selection ratio is 2.
- the selection ratio is changed from 4 to 4. Can be changed up to 2.
- Table 1 below shows the polishing ratio of fumed silica alone and the mixing ratio of fumed silica and colloidal silica 1: 2, that is, the mixing ratio of colloidal silica to the entire silica abrasive grains. The measurement results of erosion when polished with% polishing slurry are shown.
- the erosion step of 50 nm or more due to excessive shaving of a metal film such as tungsten is alleviated by polishing the SiO film about 30 nm.
- Fig. 4 shows the polishing rate for fumed silica and colloidal silica SiO films by pH.
- the selection ratio that is the ratio between the polishing rate for a metal film such as tungsten and the polishing rate for an insulating film (oxide film) can be controlled. Compared to a metal film that is too sharp, Date Thing As a result, it is possible to effectively prevent the occurrence of an electrical short circuit due to the polishing residue of the wiring metal film during the formation of the upper wiring film, thereby producing a high-quality semiconductor device. Can be obtained.
- silica abrasive grains are used, it is possible to perform flat polishing without scratches that occur when alumina abrasive grains are used.
- the polishing slurry used in this study example was prepared as follows.
- the fumed silica dispersion of the high dispersion of solid content of 20 weight 0/0 were prepared by mixing a colloidal silica and water, the solid content of 20 wt% of highly dispersed A colloidal silica dispersion was prepared. Then, the fumed silica dispersion and the colloidal silica dispersion are mixed at a ratio of 9: 1, 8: 2, 7: 3, 6: 4, 5: 5, 1: 3, respectively, and colloidal to the silica abrasive grains.
- Abrasive dispersions having a silica mixing ratio hereinafter, simply referred to as “mixing ratio” of 10%, 20%, 30%, 40%, 50%, and 75% were prepared.
- the fumed silica dispersion is an abrasive dispersion having a mixing ratio of 0%
- the colloidal silica dispersion is an abrasive dispersion having a mixing ratio of 100%.
- An oxidizer solution having a potassium iodate concentration of 4% by weight was prepared by dissolving potassium iodate, which is an oxidizer, in water.
- the oxidizing agent solution was adjusted to pH 2 by adding hydrochloric acid during preparation of the solution.
- polishing slurries with a mixing ratio of 20%, 30%, 40%, 50%, and 75% have a mixing ratio of 20% and 30% instead of using an abrasive dispersion with a mixing ratio of 10%.
- the slurry was prepared in the same manner as the polishing slurry having a mixing ratio of 10%, except that the abrasive dispersions having 40%, 50%, and 75% were used.
- Polishing slurry (fumed silica simple substance slurry) in which the silica abrasive grains are only fumed silica is used instead of the abrasive dispersion liquid with a mixing ratio of 10%.
- a polishing slurry having a mixing ratio of 10% was prepared in the same manner except that a mood silica dispersion was used.
- a polishing slurry (colloidal silica single slurry) in which the silica abrasive grains are only colloidal silica has a mixing ratio of 10 except that a colloidal silica force dispersion is used instead of using an abrasive dispersion having a mixing ratio of 10%.
- % Was prepared in the same manner as the polishing slurry. Since these concentrations are those at the time of polishing, the timing of mixing the abrasive dispersion and the oxidizer solution may be mixed in advance or may be mixed immediately before polishing.
- polishing evaluation polishing rate evaluation, surface condition evaluation and uniformity evaluation
- a wafer having a tungsten (W) film as a metal film, a titanium (Ti) film, and a SiO film as an oxide film formed on the surface was polished under the following polishing conditions.
- Polishing conditions are: Polisher (SH-24, Speed FAM), Polishing pad (IC1400, Nitta Haas), Polishing time 60 seconds, Load 5. Opsi (about 34450Pa), Surface plate rotation 65r pm, polishing head (carrier) rotation speed 65 rpm, polishing slurry flow rate 125 ml / min.
- the object to be polished is a wafer on which an 8-inch Si film is formed and a W film and T on the wafer.
- FIG. 5 is a diagram showing the polishing rate when each polishing slurry in Study Example 2 is used.
- the horizontal axis of the graph indicates the mixing ratio (%), and the vertical axis of the graph indicates the polishing rate (A / min).
- the polishing rate of the W film was measured at a plurality of points using a specific resistance measuring instrument (RS35c, manufactured by Tencor), and the film thickness of the W film was calculated from the average value and measured from the change in film thickness.
- the polishing rate of the Ti film was measured at multiple points using a specific resistance measuring instrument (RS35c, manufactured by Tencor), and the film thickness of the Ti film was calculated from the average value, and measured from the change in film thickness. Polishing of SiO film
- the rate is measured at multiple points using an optical film thickness meter (Nano spec / AFT5100, manufactured by Nanometrics), and the average film thickness is calculated from the SiO film thickness and measured from the change in film thickness.
- an optical film thickness meter Nano spec / AFT5100, manufactured by Nanometrics
- Figure 6 shows the occurrence of the SiO film polished using each polishing slurry in Study Example 2.
- the horizontal axis of the graph indicates the mixing ratio (%), and the vertical axis of the graph indicates the count of defects larger than 0.2 ⁇ per wafer. Defects were measured using a wafer surface inspection device (LS6600, manufactured by Hitachi High-Technologies Corporation).
- FIG. 7 is a diagram showing the uniformity of the W film when the W film is polished using each polishing slurry in Study Example 2.
- the horizontal axis of the graph shows the mixing ratio (%), and the vertical axis of the graph shows the uniformity of the W film after polishing.
- Uniformity is the percentage of the difference between the maximum and minimum values of the average thickness of silicon wafers measured at multiple locations, for example 49 locations, on a polished silicon wafer. The smaller the thickness of the workpiece, Excellent uniformity.
- Fig. 8 shows the relationship (profile) between the polishing rate and the distance between the central force of the wafer.
- the horizontal axis of the graph indicates the distance from the wafer center (measurement position) (mm), and the vertical axis indicates the polishing rate (A / min).
- the smooth line 21 is a profile when a polishing slurry having a mixing ratio of 20% is used.
- the smooth line 22 is a profile when a fumed silica simple substance slurry is used.
- Smooth line 23 is a profile file in the case of using colloidal silica simple substance slurry.
- the W film which is a metal film, is shaved too much compared to the SiO film, which is an insulating film.
- Eating can reduce erosion, and this effectively prevents electrical short-circuiting caused by the polishing residue of the wiring metal film during the formation of the upper wiring film. It is possible to stop and obtain a high-quality semiconductor device.
- polishing evaluation (polishing rate evaluation, surface state evaluation, dating evaluation, erosion evaluation, and recess evaluation) was examined as follows. Using each of the above polishing slurries, a wafer having a tungsten (W) film as a metal film, a titanium (Ti) film, and a SiO film as an oxide film formed on the surface was polished under the following polishing conditions.
- Polishing conditions are: Polisher (SH-24, Speed FAM), Polishing pad (IC1400, Nittah Hearth), Polishing time 60 seconds, Load 4.5psi (approx. 31000Pa), Surface plate rotation 65r pm, polishing head (carrier) rotation speed 65 rpm, polishing slurry flow rate 125 ml / min.
- the object to be polished is a wafer on which an 8-inch Si film is formed and a W film and T on the wafer.
- FIG. 9 is a diagram showing the polishing rate when using the example and the comparative example.
- the vertical axis of the graph shows the polishing rate (A / min).
- Polishing rate of W film resistivity meter (RS35c, manufactured by Tencor)
- Ti film resistivity meter (RS35c, manufactured by Tencor)
- SiO film optically meter
- the embodiment contains colloidal silica that has excellent mechanical polishing power as well as fumed silica as a silica abrasive grain containing potassium iodate with a low etching rate. High polishing rate and SiO film polishing rate
- FIG. 10 is a diagram showing the count number of defects when using the example and the comparative example.
- the vertical axis of the graph shows the number of defects counted per wafer.
- Bar 31 sharpens the Si film
- Rod 32 is 0.35 m per wafer when polishing the Si film.
- Bar 33 is Si ⁇
- Bar 34 is one wafer when the Si film is polished
- the rod 35 is a scraper of more than 0.35 x m and less than 0.50 per wafer when the SiO film is polished.
- the defect count based on h. Bar 36 is one wafer when the SiO film is polished
- the example is generated when the SiO film is polished than the comparative example.
- results showed fewer defects. Furthermore, it can be seen that the examples have particularly few defects larger than 0.20 / m and smaller than 0.35, so that fine scratches and abrasive particles are less likely to remain. From these facts, the comparative example has a strong force and can polish the SiO film too much.
- FIG. 11 is a diagram illustrating the amount of date when using the example and the comparative example.
- the vertical axis of the dull indicates the amount of date (A).
- the amount of derating is that the wiring width is on the SiO film.
- the amount of dating is measured with a stylus type surface measuring instrument (P-12, manufactured by Tencor).
- the embodiment has a smaller amount of deicing than the comparative example, regardless of the wiring width of the wiring made of the W film. This is thought to be due to the low etching effect of potassium iodate.
- FIG. 12 is a diagram showing the amount of erosion when the example and the comparative example are used.
- the vertical axis of the dull indicates the amount of erosion (A).
- the amount of erosion is the wiring density on the SiO film. This is the amount of erosion when a substrate provided with wiring consisting of W films with a force of S50%, 70%, and 90% is polished. The amount of erosion is measured with an atomic force microscope (AFM- SPA465, manufactured by Seiko Instruments Inc.).
- FIG. 13 is a diagram showing the recess amount when the example and the comparative example are used.
- the vertical axis of the graph indicates the recess amount (A).
- the recess amount is 10%, 30%, 50% on the SiO film.
- the amount of recess is measured with an atomic force microscope (AFM- SPA465, manufactured by Seiko Instruments Inc.).
- FIG. 13 shows that the amount of erosion in the example is smaller than that in the comparative example regardless of the wiring density of the wiring made of the W film. This is thought to be due to the low etching effect of potassium iodate.
- the polishing slurry containing the oxidizing agent and the silica abrasive grains, and including colloidal silica and fumed silica as the silica abrasive grains can reduce dating, erosion, and recess.
- the polishing rate ratio (selection ratio) according to the metal film or insulating film (oxide film) can be selected by the mixing ratio of two or more kinds of abrasive grains such as fumed silica and colloidal silica, As a result, the dateing erosion can be reduced as compared with the conventional example.
- the present invention is useful for polishing semiconductor wafers and optical component lenses.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020137001729A KR101371853B1 (ko) | 2005-01-05 | 2006-01-05 | 연마슬러리 |
US11/794,626 US8062548B2 (en) | 2005-01-05 | 2006-01-05 | Polishing slurry |
JP2006550892A JP5319887B2 (ja) | 2005-01-05 | 2006-01-05 | 研磨用スラリー |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005-000846 | 2005-01-05 | ||
JP2005000846 | 2005-01-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006073156A1 true WO2006073156A1 (ja) | 2006-07-13 |
Family
ID=36647632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/300036 WO2006073156A1 (ja) | 2005-01-05 | 2006-01-05 | 研磨用スラリー |
Country Status (5)
Country | Link |
---|---|
US (1) | US8062548B2 (ja) |
JP (1) | JP5319887B2 (ja) |
KR (2) | KR20070090265A (ja) |
TW (1) | TWI403574B (ja) |
WO (1) | WO2006073156A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008091573A (ja) * | 2006-09-29 | 2008-04-17 | Fujifilm Corp | 研磨用組成物及び研磨方法 |
EP1925648A3 (en) * | 2006-11-27 | 2009-01-28 | Fujimi Incorporated | Polishing composition and polishing process |
EP1925649A3 (en) * | 2006-11-27 | 2009-03-04 | Fujimi Incorporated | Polishing composition and polishing process |
JP5132820B2 (ja) * | 2010-02-03 | 2013-01-30 | ニッタ・ハース株式会社 | 研磨用組成物 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6459489B2 (ja) * | 2014-03-11 | 2019-01-30 | 三菱マテリアル株式会社 | シリカ多孔質膜形成用液組成物及びその液組成物から形成されたシリカ多孔質膜 |
KR101673692B1 (ko) | 2014-11-07 | 2016-11-07 | 현대자동차주식회사 | 건식 실리카 입자를 포함하는 상변이 현탁 유체 조성물 및 이의 제조방법 |
WO2017147767A1 (en) * | 2016-03-01 | 2017-09-08 | Rohm And Haas Electronic Materials Cmp Holdings, Inc. | Chemical mechanical polishing method |
JP2020017668A (ja) * | 2018-07-26 | 2020-01-30 | キオクシア株式会社 | 半導体装置の製造方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000345144A (ja) * | 1999-03-31 | 2000-12-12 | Tokuyama Corp | 研磨剤及び研磨方法 |
JP2002141314A (ja) * | 2000-08-21 | 2002-05-17 | Toshiba Corp | 化学機械研磨用スラリおよび半導体装置の製造方法 |
JP2003514061A (ja) * | 1999-11-04 | 2003-04-15 | 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 | 誘電性CMPスラリーにおけるCsOHの使用 |
JP2003193038A (ja) * | 2001-12-28 | 2003-07-09 | Nippon Aerosil Co Ltd | 高濃度シリカスラリー |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5693239A (en) | 1995-10-10 | 1997-12-02 | Rodel, Inc. | Polishing slurries comprising two abrasive components and methods for their use |
US5759917A (en) * | 1996-12-30 | 1998-06-02 | Cabot Corporation | Composition for oxide CMP |
JP2000160139A (ja) * | 1998-12-01 | 2000-06-13 | Fujimi Inc | 研磨用組成物およびそれを用いた研磨方法 |
JP3840343B2 (ja) | 1999-01-18 | 2006-11-01 | 株式会社東芝 | 半導体装置の製造に用いる化学機械研磨用水系分散体及び半導体装置の製造方法 |
KR100472882B1 (ko) * | 1999-01-18 | 2005-03-07 | 가부시끼가이샤 도시바 | 수계 분산체, 이를 이용한 화학 기계 연마용 수계 분산체조성물, 웨이퍼 표면의 연마 방법 및 반도체 장치의 제조방법 |
KR100574259B1 (ko) * | 1999-03-31 | 2006-04-27 | 가부시끼가이샤 도꾸야마 | 연마제 및 연마 방법 |
US6409781B1 (en) * | 2000-05-01 | 2002-06-25 | Advanced Technology Materials, Inc. | Polishing slurries for copper and associated materials |
US6599173B1 (en) * | 2000-06-30 | 2003-07-29 | International Business Machines Corporation | Method to prevent leaving residual metal in CMP process of metal interconnect |
US6468913B1 (en) * | 2000-07-08 | 2002-10-22 | Arch Specialty Chemicals, Inc. | Ready-to-use stable chemical-mechanical polishing slurries |
KR100481651B1 (ko) * | 2000-08-21 | 2005-04-08 | 가부시끼가이샤 도시바 | 화학 기계 연마용 슬러리 및 반도체 장치의 제조 방법 |
JP2004193495A (ja) | 2002-12-13 | 2004-07-08 | Toshiba Corp | 化学的機械的研磨用スラリーおよびこれを用いた半導体装置の製造方法 |
US20050090104A1 (en) * | 2003-10-27 | 2005-04-28 | Kai Yang | Slurry compositions for chemical mechanical polishing of copper and barrier films |
US7563383B2 (en) * | 2004-10-12 | 2009-07-21 | Cabot Mircroelectronics Corporation | CMP composition with a polymer additive for polishing noble metals |
-
2006
- 2006-01-05 US US11/794,626 patent/US8062548B2/en active Active
- 2006-01-05 JP JP2006550892A patent/JP5319887B2/ja active Active
- 2006-01-05 TW TW095100562A patent/TWI403574B/zh active
- 2006-01-05 KR KR1020077017308A patent/KR20070090265A/ko active Search and Examination
- 2006-01-05 WO PCT/JP2006/300036 patent/WO2006073156A1/ja active Search and Examination
- 2006-01-05 KR KR1020137001729A patent/KR101371853B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000345144A (ja) * | 1999-03-31 | 2000-12-12 | Tokuyama Corp | 研磨剤及び研磨方法 |
JP2003514061A (ja) * | 1999-11-04 | 2003-04-15 | 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 | 誘電性CMPスラリーにおけるCsOHの使用 |
JP2002141314A (ja) * | 2000-08-21 | 2002-05-17 | Toshiba Corp | 化学機械研磨用スラリおよび半導体装置の製造方法 |
JP2003193038A (ja) * | 2001-12-28 | 2003-07-09 | Nippon Aerosil Co Ltd | 高濃度シリカスラリー |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008091573A (ja) * | 2006-09-29 | 2008-04-17 | Fujifilm Corp | 研磨用組成物及び研磨方法 |
EP1925648A3 (en) * | 2006-11-27 | 2009-01-28 | Fujimi Incorporated | Polishing composition and polishing process |
EP1925649A3 (en) * | 2006-11-27 | 2009-03-04 | Fujimi Incorporated | Polishing composition and polishing process |
KR101427418B1 (ko) * | 2006-11-27 | 2014-08-08 | 가부시키가이샤 후지미인코퍼레이티드 | 연마용 조성물 및 연마 방법 |
KR101427419B1 (ko) * | 2006-11-27 | 2014-08-08 | 가부시키가이샤 후지미인코퍼레이티드 | 연마용 조성물 및 연마 방법 |
JP5132820B2 (ja) * | 2010-02-03 | 2013-01-30 | ニッタ・ハース株式会社 | 研磨用組成物 |
Also Published As
Publication number | Publication date |
---|---|
KR20130018377A (ko) | 2013-02-20 |
JP5319887B2 (ja) | 2013-10-16 |
US8062548B2 (en) | 2011-11-22 |
KR101371853B1 (ko) | 2014-03-07 |
JPWO2006073156A1 (ja) | 2008-08-07 |
US20090278080A1 (en) | 2009-11-12 |
KR20070090265A (ko) | 2007-09-05 |
TW200639242A (en) | 2006-11-16 |
TWI403574B (zh) | 2013-08-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
RU2356926C2 (ru) | Абразивные частицы для механической полировки | |
JP3899456B2 (ja) | 研磨用組成物およびそれを用いた研磨方法 | |
KR100367957B1 (ko) | 금속배선 형성방법 | |
KR100402442B1 (ko) | 화학적 기계적 연마용 슬러리 | |
TWI658133B (zh) | 拋光漿料組合物 | |
JP5760317B2 (ja) | Cmp研磨液及びこのcmp研磨液を用いた研磨方法 | |
TWI547551B (zh) | Cmp研磨液以及研磨方法 | |
JP5319887B2 (ja) | 研磨用スラリー | |
KR20080014776A (ko) | 연마제 및 반도체 집적 회로 장치의 제조 방법 | |
WO2021135806A1 (zh) | 一种化学机械抛光液 | |
WO2010016390A1 (ja) | Cmp研磨液及びこのcmp研磨液を用いた基板の研磨方法 | |
JP5585220B2 (ja) | Cmp研磨液及びこのcmp研磨液を用いた研磨方法 | |
JP2006156825A (ja) | 半導体基板用研磨液組成物 | |
JP2001223216A (ja) | 半導体装置の製造方法 | |
JP2004146780A (ja) | 研磨液組成物 | |
JP2013165088A (ja) | 研磨剤および研磨方法 | |
JP2003336039A (ja) | 研磨用組成物 | |
JP3741435B2 (ja) | 研磨用組成物 | |
JP2003100676A (ja) | 研磨用組成物 | |
JP2005136255A (ja) | 研磨用組成物 | |
JP2004059825A (ja) | 研磨用組成物 | |
JP2004175904A (ja) | 研磨用組成物 | |
JP2003100678A (ja) | 研磨用組成物 | |
JP2004067869A (ja) | 研磨用組成物 | |
JP2002294219A (ja) | 研磨用組成物 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2006550892 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11794626 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020077017308 Country of ref document: KR |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 06702131 Country of ref document: EP Kind code of ref document: A1 |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 6702131 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020137001729 Country of ref document: KR |
|
DPE2 | Request for preliminary examination filed before expiration of 19th month from priority date (pct application filed from 20040101) |