JP4681538B2 - 選択的バリヤ金属研磨溶液 - Google Patents
選択的バリヤ金属研磨溶液 Download PDFInfo
- Publication number
- JP4681538B2 JP4681538B2 JP2006502859A JP2006502859A JP4681538B2 JP 4681538 B2 JP4681538 B2 JP 4681538B2 JP 2006502859 A JP2006502859 A JP 2006502859A JP 2006502859 A JP2006502859 A JP 2006502859A JP 4681538 B2 JP4681538 B2 JP 4681538B2
- Authority
- JP
- Japan
- Prior art keywords
- polishing
- polishing solution
- removal rate
- colloidal silica
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005498 polishing Methods 0.000 title claims description 115
- 229910052751 metal Inorganic materials 0.000 title claims description 40
- 239000002184 metal Substances 0.000 title claims description 40
- 230000004888 barrier function Effects 0.000 title claims description 36
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 68
- 239000010949 copper Substances 0.000 claims description 53
- 229910052802 copper Inorganic materials 0.000 claims description 35
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 34
- 239000008119 colloidal silica Substances 0.000 claims description 33
- 239000012964 benzotriazole Substances 0.000 claims description 31
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 30
- 239000003112 inhibitor Substances 0.000 claims description 27
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 22
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 claims description 19
- 239000004094 surface-active agent Substances 0.000 claims description 12
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 10
- 229910017604 nitric acid Inorganic materials 0.000 claims description 10
- 239000011810 insulating material Substances 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000002738 chelating agent Substances 0.000 claims description 6
- 150000007522 mineralic acids Chemical class 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 239000003945 anionic surfactant Substances 0.000 claims description 3
- 125000000524 functional group Chemical group 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- 150000007942 carboxylates Chemical class 0.000 claims description 2
- 239000008139 complexing agent Substances 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims 2
- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims 1
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims 1
- 239000010452 phosphate Substances 0.000 claims 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 45
- 239000000243 solution Substances 0.000 description 32
- 239000002002 slurry Substances 0.000 description 27
- 238000002474 experimental method Methods 0.000 description 20
- 230000007797 corrosion Effects 0.000 description 16
- 238000005260 corrosion Methods 0.000 description 16
- 230000002378 acidificating effect Effects 0.000 description 13
- 239000000377 silicon dioxide Substances 0.000 description 13
- 239000008346 aqueous phase Substances 0.000 description 11
- 239000000758 substrate Substances 0.000 description 11
- 229910004298 SiO 2 Inorganic materials 0.000 description 10
- 239000007800 oxidant agent Substances 0.000 description 10
- 230000003628 erosive effect Effects 0.000 description 9
- 229910052715 tantalum Inorganic materials 0.000 description 9
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 9
- 235000012431 wafers Nutrition 0.000 description 9
- 239000006061 abrasive grain Substances 0.000 description 7
- 230000001590 oxidative effect Effects 0.000 description 7
- 238000012545 processing Methods 0.000 description 7
- 229910052581 Si3N4 Inorganic materials 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 235000012239 silicon dioxide Nutrition 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical group [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000003002 pH adjusting agent Substances 0.000 description 5
- 239000004065 semiconductor Substances 0.000 description 5
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- -1 tungsten nitride Chemical class 0.000 description 4
- 239000002518 antifoaming agent Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000004090 dissolution Methods 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 238000007517 polishing process Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 2
- UGACIEPFGXRWCH-UHFFFAOYSA-N [Si].[Ti] Chemical compound [Si].[Ti] UGACIEPFGXRWCH-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000002280 amphoteric surfactant Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 229930182470 glycoside Natural products 0.000 description 2
- 150000002338 glycosides Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006263 metalation reaction Methods 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- HWEYZGSCHQNNEH-UHFFFAOYSA-N silicon tantalum Chemical compound [Si].[Ta] HWEYZGSCHQNNEH-UHFFFAOYSA-N 0.000 description 2
- WNUPENMBHHEARK-UHFFFAOYSA-N silicon tungsten Chemical compound [Si].[W] WNUPENMBHHEARK-UHFFFAOYSA-N 0.000 description 2
- HFQQZARZPUDIFP-UHFFFAOYSA-M sodium;2-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O HFQQZARZPUDIFP-UHFFFAOYSA-M 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- NMJKIRUDPFBRHW-UHFFFAOYSA-N titanium Chemical compound [Ti].[Ti] NMJKIRUDPFBRHW-UHFFFAOYSA-N 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- MAKDTFFYCIMFQP-UHFFFAOYSA-N titanium tungsten Chemical compound [Ti].[W] MAKDTFFYCIMFQP-UHFFFAOYSA-N 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- KAESVJOAVNADME-UHFFFAOYSA-N 1H-pyrrole Natural products C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 1
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical class NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- 244000132059 Carica parviflora Species 0.000 description 1
- 235000014653 Carica parviflora Nutrition 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 125000003354 benzotriazolyl group Chemical group N1N=NC2=C1C=CC=C2* 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 150000004696 coordination complex Chemical class 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009429 electrical wiring Methods 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- NBZBKCUXIYYUSX-UHFFFAOYSA-N iminodiacetic acid Chemical compound OC(=O)CNCC(O)=O NBZBKCUXIYYUSX-UHFFFAOYSA-N 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 238000010979 pH adjustment Methods 0.000 description 1
- 239000006179 pH buffering agent Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical group 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- JLKDVMWYMMLWTI-UHFFFAOYSA-M potassium iodate Chemical compound [K+].[O-]I(=O)=O JLKDVMWYMMLWTI-UHFFFAOYSA-M 0.000 description 1
- 239000001230 potassium iodate Substances 0.000 description 1
- 229940093930 potassium iodate Drugs 0.000 description 1
- 235000006666 potassium iodate Nutrition 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000012047 saturated solution Substances 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 150000003871 sulfonates Chemical group 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical group 0.000 description 1
- 239000013077 target material Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G1/00—Polishing compositions
- C09G1/02—Polishing compositions containing abrasives or grinding agents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1409—Abrasive particles per se
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/14—Anti-slip materials; Abrasives
- C09K3/1454—Abrasive powders, suspensions and pastes for polishing
- C09K3/1463—Aqueous liquid suspensions
-
- 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
- H01L21/31—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]
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/7684—Smoothing; Planarisation
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
Description
本発明は一般に、バリヤ金属を除去するためのケミカルメカニカル平坦化(CMP)加工に関し、より具体的には、集積回路素子中の配線構造の存在下でバリヤ金属を選択的に除去するための研磨組成物に関する。
本発明は、配線金属及び絶縁材の存在下でバリヤ材料を除去するのに有用な研磨溶液を提供する。研磨溶液は、過酸化水素0.1〜10重量%、研磨溶液のpHレベルを3未満に調節するための、硝酸、硫酸、塩酸及びリン酸からなる群より選択される少なくとも1種のpH調節剤、配線金属の除去速度を下げるためのベンゾトリアゾールインヒビター少なくとも0.0025重量%、界面活性剤0〜10重量%、50nm未満の平均粒度を有するコロイダルシリカ0〜10重量%ならびに残余としての水及び不可避的な不純物を含む。研磨溶液は、ウェーハに対して垂直に計測して15kPa未満の研磨パッド圧力で測定して、少なくとも3:1の窒化タンタル:銅の選択比及び少なくとも3:1の窒化タンタル:TEOSの選択比を有する。
本発明は、コロイダルシリカ砥粒、過酸化水素酸化剤、ベンゾトリアゾールコロージョンインヒビター及び無機pH調節剤を含む、3未満の酸性pHを有するバリヤ金属研磨溶液を提供する。本明細書に関して、研磨溶液とは、砥粒を含んでも含まなくてもよい水性研磨溶液をいう。研磨溶液が砥粒を含むならば、その研磨溶液は研磨スラリーでもある。研磨溶液はまた、場合によっては、界面活性剤、キレート化剤、pH緩衝剤及び消泡剤を含むことができる。
異なる成分濃度での本発明の研磨組成物の研磨性能を測定するため、いくつかの実験を実施した。研磨実験は、Buehler Ecomet CMP システム、Strasbaugh 6EC、IPEC 472又はApplied Materials Mirraを使用して実施した。
異なるpH値を有するように調合した2種の研磨組成物とともにBuehler CMP システムを使用して試験基材を研磨した。第一及び第二の研磨組成物それぞれは、pH調節剤ならびに異なる量のH2O2及びコロイダルシリカ8.5重量%を含有するものであった。各スラリーの砥粒相は、Nalco 2360コロイダルシリカ砥粒を使用して調合した。一方の研磨組成物は、pH2を有するように調合し、他方の研磨組成物は、pH9を有するように調合した。Target Materials社製のタンタル(99.95%)基材を使用して研磨実験を実施した。基材は、直径1インチ(2.5cm)、厚さ0.118インチ(0.30cm)であった。
それぞれ異なるpH値を有するように調合した4種の研磨組成物で、Strasbaugh CMP システムを使用して試験基材を研磨した。これらの実験のために、Strasbaugh CMP システムは、Rodel社のIC1010/Suba IV研磨パッドを具備していた。研磨組成物のうち2種は、Klebosol PL150H20コロイダルシリカを1重量%含有するものであり、残り2種の組成物は、Klebosol PL150H20コロイダルシリカを4重量%含有するものであった。さらに、研磨組成物ごとに、Wafernet社から得た直径200mmのケイ素基材を使用して、1psi(6.9kPa)及び2psi(13.8kPa)のパッド圧力を使用して研磨実験を実施した。基材は、電気めっきした15,000オングストロームのCu薄層、TEOS源ガスを使用するCVDによって付着させた15,000オングストロームのSiO2薄層又はケイ素に重なる2000オングストロームのCVD TaN薄層を含むものであった。
種々の砥粒濃度での研磨組成物のTaN除去速度を測定するための実験を実施した。この実験はまた、砥粒濃度とパッド圧力との相互作用を判定するために、異なるパッド圧力で実施した。研磨データを図3に示す。TaN除去速度は、種々の砥粒濃度で試験範囲にわたってパッド圧力の増大とともに線形に増大する。また、所与のパッド圧力の場合、TaN除去速度は砥粒濃度の増大とともに増大する。重要なことに、データは、低い砥粒濃度及びパッド圧力でさえ高いTaN除去速度が得られるということを示す。
Cu、SiO2(TEOS)及びTaNの除去速度を測定するための実験を実施した。これらの実験の場合、4重量%コロイダルシリカ、4重量%H2O2を有するpH2の研磨組成物を使用して2psi(13.8kPa)のパッド圧力で試料を研磨した。図4は、異なる濃度の第一のインヒビターBTAでのCu、TaN及びSiO2(TEOS)除去速度を示す。Cu除去速度は、CDE 168 4点プローブを使用して測定し、SiO2除去速度は、KLA-Tencor SM300を使用して測定した。データは、BTAの重量%を飽和レベルまで増したとき、Cu除去速度の劇的な低下を示す。飽和レベルを超えると、BTA濃度の増大は、第二のインヒビターの非存在下では、Cu除去速度を有意には低下させない。重要なことに、SiO2及びTaN除去速度は、Cu除去速度と比べて比較的一定のままである。また、TaN除去速度は、全BTA濃度範囲にわたって高いままである。
Cu、二酸化ケイ素及びTaNの除去速度を第二のコロージョンインヒビター(ドデシル硫酸ナトリウム)濃度の関数として測定した。pH2を有するように調合した研磨組成物を使用して実験を実施した。本発明の研磨組成物はまた、過酸化水素4重量%及び第一のインヒビター(BTA)0.6重量%を含有するものであった。Strausbaugh CMP システムを2psi(13.8kPa)のパッド圧力で作動させた。
本発明にしたがって調合した、界面活性剤を含む研磨組成物を使用して、Cu、SiO2及びTaNの除去速度を測定するための実験を実施した。これらの実験の場合、アニオン性界面活性剤Biosoft D-40を研磨組成物に添加して、水相中0.02重量%の界面活性剤濃度を形成した。Biosoft D-40の有効成分はドデシルベンゼンスルホン酸ナトリウムである。IPEC 472 CMP システムを使用して研磨試験を実施した。IPEC 472は、IC1000k溝付き研磨パッドを具備していた。他の作業パラメータとして、テーブル速度120rpm、キャリヤ速度114rpm及びスラリー流量200ml/分であった。1psi(6.9kPa)のパッド圧力を適用して、以下の表4に示す除去速度を得た。
表5のスラリー調合物18〜21及びJは、コロイダルシリカ4重量%、BTA 0.6重量%、H2O2 0.5重量%を含み、硝酸でpHを2.5に調節したものであった。以下の表は、Mirra CMP 研磨装置でのシートウェーハ除去速度データを提示する。研磨加工は、120rpmのテーブル速度、114rpmのキャリヤ速度、1psi(6.9kPa)のダウンフォース、200ml/分のスラリー流量及びIC1010/Suba IVパッドを使用した。
Claims (5)
- 配線金属及び絶縁材の存在下でバリヤ材料を除去するための研磨溶液であって、過酸化水素0.1〜10重量%、研磨溶液のpHレベルを2〜2.9に調節するためのpH調節剤であって、硝酸、硫酸、塩酸及びリン酸からなる群より選択される少なくとも1種の無機酸のみから構成されるpH調節剤、配線金属の除去速度を下げるためのベンゾトリアゾールインヒビター0.4〜1重量%、界面活性剤0〜10重量%、50nm未満の平均粒度を有するコロイダルシリカ0.01〜10重量%ならびに残余としての水及び不可避的な不純物を含み、銅除去速度を調節するためのキレート化剤又は錯化剤を含まず、ウェーハに対して垂直に計測して15kPa未満の研磨パッド圧力で測定して、少なくとも3:1の窒化タンタル:銅の選択比及び少なくとも3:1の窒化タンタル:TEOSの選択比を有する研磨溶液。
- 前記界面活性剤が、スルホネート、スルフェート、カルボキシレート、ホスフェート及びこれらの誘導体からなる群より選択される官能基を有するアニオン性界面活性剤であり、前記界面活性剤が銅配線の除去速度を下げる、請求項1記載の研磨溶液。
- 前記コロイダルシリカの平均粒度が2〜15nmであり、前記コロイダルシリカが単峰性粒度分布を有する、請求項1又は2記載の研磨溶液。
- 前記研磨溶液が、過酸化水素0.1〜2重量%、ベンゾトリアゾールインヒビター0.4〜1重量%、界面活性剤0〜5重量%、コロイダルシリカ0.1〜2重量%を含有し、前記pHレベルが2〜2.8であり、前記コロイダルシリカが15nm未満の平均粒度を有し、前記研磨溶液が、ウェーハに対して垂直に計測して10kPa未満の研磨パッド圧力で測定して、少なくとも5:1の窒化タンタル:銅の選択比及び少なくとも5:1の窒化タンタル:TEOSの選択比を有する、請求項1〜3のいずれか1項記載の研磨溶液。
- 0.0001〜5重量%のドデシルベンゼンスルホン酸を含む、請求項1〜4のいずれか1項記載の研磨溶液。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/349,792 US7300602B2 (en) | 2003-01-23 | 2003-01-23 | Selective barrier metal polishing solution |
PCT/US2004/001132 WO2004067660A1 (en) | 2003-01-23 | 2004-01-16 | Selective barrier metal polishing solution |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006517741A JP2006517741A (ja) | 2006-07-27 |
JP4681538B2 true JP4681538B2 (ja) | 2011-05-11 |
Family
ID=32735454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006502859A Expired - Lifetime JP4681538B2 (ja) | 2003-01-23 | 2004-01-16 | 選択的バリヤ金属研磨溶液 |
Country Status (7)
Country | Link |
---|---|
US (2) | US7300602B2 (ja) |
EP (1) | EP1590413B1 (ja) |
JP (1) | JP4681538B2 (ja) |
KR (2) | KR20110133623A (ja) |
CN (1) | CN100408648C (ja) |
TW (1) | TWI342332B (ja) |
WO (1) | WO2004067660A1 (ja) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2194570A1 (en) * | 1998-12-28 | 2010-06-09 | Hitachi Chemical Co., Ltd. | Materials for polishing liquid for metal, polishing liquid for metal, mehtod for preparation thereof and polishing method using the same |
US7201784B2 (en) * | 2003-06-30 | 2007-04-10 | Intel Corporation | Surfactant slurry additives to improve erosion, dishing, and defects during chemical mechanical polishing of copper damascene with low k dielectrics |
US7300603B2 (en) * | 2003-08-05 | 2007-11-27 | Rohm And Haas Electronic Materials Cmp Holdings, Inc. | Chemical mechanical planarization compositions for reducing erosion in semiconductor wafers |
US7018560B2 (en) * | 2003-08-05 | 2006-03-28 | Rohm And Haas Electronic Materials Cmp Holdings, Inc. | Composition for polishing semiconductor layers |
US7300480B2 (en) * | 2003-09-25 | 2007-11-27 | Rohm And Haas Electronic Materials Cmp Holdings, Inc. | High-rate barrier polishing composition |
US20050097825A1 (en) * | 2003-11-06 | 2005-05-12 | Jinru Bian | Compositions and methods for a barrier removal |
US20050136670A1 (en) * | 2003-12-19 | 2005-06-23 | Ameen Joseph G. | Compositions and methods for controlled polishing of copper |
US7390744B2 (en) * | 2004-01-29 | 2008-06-24 | Applied Materials, Inc. | Method and composition for polishing a substrate |
US6971945B2 (en) * | 2004-02-23 | 2005-12-06 | Rohm And Haas Electronic Materials Cmp Holdings, Inc. | Multi-step polishing solution for chemical mechanical planarization |
US7988878B2 (en) * | 2004-09-29 | 2011-08-02 | Rohm And Haas Electronic Materials Cmp Holdings, Inc. | Selective barrier slurry for chemical mechanical polishing |
US20060110923A1 (en) * | 2004-11-24 | 2006-05-25 | Zhendong Liu | Barrier polishing solution |
KR20060077353A (ko) * | 2004-12-30 | 2006-07-05 | 삼성전자주식회사 | 슬러리 조성물, 이를 이용한 가공물의 연마방법 및 반도체장치의 콘택 형성방법 |
US7427362B2 (en) * | 2005-01-26 | 2008-09-23 | Rohm And Haas Electronic Materials Cmp Holdings, Inc. | Corrosion-resistant barrier polishing solution |
US20070039246A1 (en) * | 2005-08-17 | 2007-02-22 | Zhendong Liu | Method for preparing polishing slurry |
CN102863943B (zh) * | 2005-08-30 | 2015-03-25 | 花王株式会社 | 硬盘用基板用研磨液组合物、基板的研磨方法和制造方法 |
JP4390757B2 (ja) * | 2005-08-30 | 2009-12-24 | 花王株式会社 | 研磨液組成物 |
US20070068087A1 (en) * | 2005-09-26 | 2007-03-29 | Cabot Microelectronics Corporation | Metal cations for initiating polishing |
CN101153205A (zh) * | 2006-09-29 | 2008-04-02 | 安集微电子(上海)有限公司 | 用于抛光低介电材料的化学机械抛光液 |
WO2010047314A1 (ja) * | 2008-10-20 | 2010-04-29 | ニッタ・ハース株式会社 | 窒化ケイ素研磨用組成物およびこれを用いた選択比の制御方法 |
US8071479B2 (en) | 2008-12-11 | 2011-12-06 | Rohm And Haas Electronic Materials Cmp Holdings, Inc. | Chemical mechanical polishing composition and methods relating thereto |
CN102690604A (zh) * | 2011-03-24 | 2012-09-26 | 中国科学院上海微系统与信息技术研究所 | 化学机械抛光液 |
CN102585707B (zh) * | 2012-02-28 | 2014-01-29 | 上海华明高纳稀土新材料有限公司 | 铈基混合稀土抛光粉的制备方法 |
US8545715B1 (en) | 2012-10-09 | 2013-10-01 | Rohm And Haas Electronic Materials Cmp Holdings, Inc. | Chemical mechanical polishing composition and method |
CN103265893B (zh) * | 2013-06-04 | 2015-12-09 | 复旦大学 | 一种基于金属Mo的抛光工艺的抛光液、其制备方法及应用 |
CN105802509B (zh) * | 2014-12-29 | 2018-10-26 | 安集微电子(上海)有限公司 | 一种组合物在阻挡层抛光中的应用 |
CN106916536B (zh) * | 2015-12-25 | 2021-04-20 | 安集微电子(上海)有限公司 | 一种碱性化学机械抛光液 |
CN106566413A (zh) * | 2016-10-28 | 2017-04-19 | 扬州翠佛堂珠宝有限公司 | 一种蓝宝石抛光液 |
CN107267993B (zh) * | 2017-05-25 | 2020-06-23 | 广西大学 | 双氧水体系抛光液以及在该双氧水体系抛光液中抛光thgem膜的方法 |
CN113122142B (zh) * | 2019-12-31 | 2024-04-12 | 安集微电子科技(上海)股份有限公司 | 一种化学机械抛光液 |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05299385A (ja) * | 1992-02-20 | 1993-11-12 | Matsushita Electron Corp | プラズマエッチング装置用電極およびそれを用いたプラズマエッチング装置 |
US5614444A (en) * | 1995-06-06 | 1997-03-25 | Sematech, Inc. | Method of using additives with silica-based slurries to enhance selectivity in metal CMP |
US5851845A (en) * | 1995-12-18 | 1998-12-22 | Micron Technology, Inc. | Process for packaging a semiconductor die using dicing and testing |
US5858813A (en) | 1996-05-10 | 1999-01-12 | Cabot Corporation | Chemical mechanical polishing slurry for metal layers and films |
US6039891A (en) * | 1996-09-24 | 2000-03-21 | Cabot Corporation | Multi-oxidizer precursor for chemical mechanical polishing |
US5954997A (en) * | 1996-12-09 | 1999-09-21 | Cabot Corporation | Chemical mechanical polishing slurry useful for copper substrates |
JP3371775B2 (ja) * | 1997-10-31 | 2003-01-27 | 株式会社日立製作所 | 研磨方法 |
US6063306A (en) | 1998-06-26 | 2000-05-16 | Cabot Corporation | Chemical mechanical polishing slurry useful for copper/tantalum substrate |
JP2000248265A (ja) * | 1999-03-02 | 2000-09-12 | Sumitomo Chem Co Ltd | 研磨用組成物及びそれを用いてなる金属材料の研磨方法 |
US6375693B1 (en) * | 1999-05-07 | 2002-04-23 | International Business Machines Corporation | Chemical-mechanical planarization of barriers or liners for copper metallurgy |
TW501197B (en) * | 1999-08-17 | 2002-09-01 | Hitachi Chemical Co Ltd | Polishing compound for chemical mechanical polishing and method for polishing substrate |
TWI290740B (en) | 1999-08-26 | 2007-12-01 | Hitachi Chemical Co Ltd | Polishing compound for chemical-mechanical polishing and polishing method |
JP4505891B2 (ja) | 1999-09-06 | 2010-07-21 | Jsr株式会社 | 半導体装置の製造に用いる化学機械研磨用水系分散体 |
US7041599B1 (en) * | 1999-12-21 | 2006-05-09 | Applied Materials Inc. | High through-put Cu CMP with significantly reduced erosion and dishing |
JP3490038B2 (ja) * | 1999-12-28 | 2004-01-26 | Necエレクトロニクス株式会社 | 金属配線形成方法 |
US6372111B1 (en) * | 2000-01-18 | 2002-04-16 | David K. Watts | Method and apparatus for reclaiming a metal from a CMP process for use in an electroplating process |
US6355075B1 (en) * | 2000-02-11 | 2002-03-12 | Fujimi Incorporated | Polishing composition |
US6409781B1 (en) * | 2000-05-01 | 2002-06-25 | Advanced Technology Materials, Inc. | Polishing slurries for copper and associated materials |
US6602117B1 (en) | 2000-08-30 | 2003-08-05 | Micron Technology, Inc. | Slurry for use with fixed-abrasive polishing pads in polishing semiconductor device conductive structures that include copper and tungsten and polishing methods |
US6605537B2 (en) | 2000-10-27 | 2003-08-12 | Rodel Holdings, Inc. | Polishing of metal substrates |
WO2002024413A2 (en) | 2000-09-20 | 2002-03-28 | Rodel Holdings, Inc. | Polishing by cmp for optimized planarization |
US6524167B1 (en) * | 2000-10-27 | 2003-02-25 | Applied Materials, Inc. | Method and composition for the selective removal of residual materials and barrier materials during substrate planarization |
US20020104269A1 (en) * | 2001-01-26 | 2002-08-08 | Applied Materials, Inc. | Photochemically enhanced chemical polish |
JP4637398B2 (ja) * | 2001-04-18 | 2011-02-23 | 株式会社フジミインコーポレーテッド | 研磨用組成物およびそれを用いた研磨方法 |
US7499602B2 (en) * | 2001-07-12 | 2009-03-03 | International Business Machines Corporation | Efficiency and speed in verification of recognition results |
US6638326B2 (en) * | 2001-09-25 | 2003-10-28 | Ekc Technology, Inc. | Compositions for chemical mechanical planarization of tantalum and tantalum nitride |
US6821897B2 (en) | 2001-12-05 | 2004-11-23 | Cabot Microelectronics Corporation | Method for copper CMP using polymeric complexing agents |
-
2003
- 2003-01-23 US US10/349,792 patent/US7300602B2/en not_active Expired - Lifetime
-
2004
- 2004-01-16 CN CNB2004800026487A patent/CN100408648C/zh not_active Expired - Lifetime
- 2004-01-16 KR KR1020117025456A patent/KR20110133623A/ko not_active Application Discontinuation
- 2004-01-16 WO PCT/US2004/001132 patent/WO2004067660A1/en active Application Filing
- 2004-01-16 JP JP2006502859A patent/JP4681538B2/ja not_active Expired - Lifetime
- 2004-01-16 KR KR1020057013076A patent/KR101258100B1/ko active IP Right Grant
- 2004-01-16 EP EP04702975.6A patent/EP1590413B1/en not_active Expired - Lifetime
- 2004-01-20 TW TW093101590A patent/TWI342332B/zh not_active IP Right Cessation
-
2007
- 2007-10-22 US US11/975,804 patent/US7981316B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN1742065A (zh) | 2006-03-01 |
KR20050092045A (ko) | 2005-09-16 |
TW200422388A (en) | 2004-11-01 |
KR20110133623A (ko) | 2011-12-13 |
TWI342332B (en) | 2011-05-21 |
KR101258100B1 (ko) | 2013-04-25 |
EP1590413A1 (en) | 2005-11-02 |
JP2006517741A (ja) | 2006-07-27 |
EP1590413B1 (en) | 2019-07-03 |
CN100408648C (zh) | 2008-08-06 |
US20040147118A1 (en) | 2004-07-29 |
WO2004067660A1 (en) | 2004-08-12 |
US20080119052A1 (en) | 2008-05-22 |
US7300602B2 (en) | 2007-11-27 |
US7981316B2 (en) | 2011-07-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4681538B2 (ja) | 選択的バリヤ金属研磨溶液 | |
TWI396731B (zh) | 多成分之阻障研磨溶液 | |
EP1152046B1 (en) | Polishing composition and polishing method employing it | |
KR101020613B1 (ko) | 탄탈 배리어 제거 용액 | |
JP4761815B2 (ja) | バリヤ研磨溶液 | |
TWI478227B (zh) | 用於基板之化學機械研磨之方法 | |
US20050090104A1 (en) | Slurry compositions for chemical mechanical polishing of copper and barrier films | |
JP2008172222A (ja) | ルテニウムバリヤ研磨スラリー | |
US7300603B2 (en) | Chemical mechanical planarization compositions for reducing erosion in semiconductor wafers | |
KR20160012940A (ko) | 코발트함유 기판의 화학적 기계적 연마(cmp) | |
EP1209731A1 (en) | Polishing composition and polishing method employing it | |
JP2009004748A (ja) | アルカリ性バリヤ研磨スラリー | |
JP2010153865A (ja) | バリヤ除去ポリマー研磨スラリー | |
EP1548076A1 (en) | Compositions and methods for low downforce pressure polishing of copper | |
JP2006148136A (ja) | バリヤ用研磨溶液 | |
US20060213868A1 (en) | Low-dishing composition and method for chemical-mechanical planarization with branched-alkylphenol-substituted benzotriazole | |
US20090280724A1 (en) | Method for Polishing Semiconductor Layers | |
JP2005167219A (ja) | バリヤ除去のための組成物及び方法 | |
WO2009056491A1 (en) | Cmp slurry composition and process for planarizing copper containing surfaces provided with a diffusion barrier layer | |
US20050009714A1 (en) | Process and slurry for chemical mechanical polishing | |
KR102515722B1 (ko) | 구리 배리어층 연마용 cmp 슬러리 조성물 | |
KR20210095548A (ko) | 구리 배리어층 연마용 슬러리 조성물 | |
KR102698433B1 (ko) | 연마 슬러리 조성물 및 이를 이용한 연마 방법 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20061219 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20091117 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20100217 |
|
A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20100224 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20100316 |
|
A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20100324 |
|
A601 | Written request for extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A601 Effective date: 20100415 |
|
A602 | Written permission of extension of time |
Free format text: JAPANESE INTERMEDIATE CODE: A602 Effective date: 20100422 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20100517 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20100622 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20101021 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20101022 |
|
A911 | Transfer to examiner for re-examination before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20101213 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20110125 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20110204 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 4681538 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140210 Year of fee payment: 3 |
|
EXPY | Cancellation because of completion of term |