JP4855665B2 - チタンベース材料の選択的等方性エッチングプロセス - Google Patents
チタンベース材料の選択的等方性エッチングプロセス Download PDFInfo
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- JP4855665B2 JP4855665B2 JP2004278932A JP2004278932A JP4855665B2 JP 4855665 B2 JP4855665 B2 JP 4855665B2 JP 2004278932 A JP2004278932 A JP 2004278932A JP 2004278932 A JP2004278932 A JP 2004278932A JP 4855665 B2 JP4855665 B2 JP 4855665B2
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- titanium
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- 239000000463 material Substances 0.000 title claims description 73
- 238000000034 method Methods 0.000 title claims description 54
- 238000005530 etching Methods 0.000 title claims description 46
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims description 17
- 239000010936 titanium Substances 0.000 title claims description 15
- 229910052719 titanium Inorganic materials 0.000 title claims description 15
- 230000008569 process Effects 0.000 title description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 66
- 230000007246 mechanism Effects 0.000 claims description 52
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 40
- 239000000758 substrate Substances 0.000 claims description 35
- 239000000377 silicon dioxide Substances 0.000 claims description 33
- 235000012239 silicon dioxide Nutrition 0.000 claims description 33
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 10
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 9
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 7
- 229910052731 fluorine Inorganic materials 0.000 claims description 7
- 239000011737 fluorine Substances 0.000 claims description 7
- 229910021417 amorphous silicon Inorganic materials 0.000 claims description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- 239000010937 tungsten Substances 0.000 claims description 6
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims description 4
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 3
- 150000003609 titanium compounds Chemical class 0.000 claims description 3
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 2
- 229910000838 Al alloy Inorganic materials 0.000 claims 1
- 239000010410 layer Substances 0.000 description 148
- 229910052782 aluminium Inorganic materials 0.000 description 25
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 25
- 239000007789 gas Substances 0.000 description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 13
- 239000010703 silicon Substances 0.000 description 13
- 229910052710 silicon Inorganic materials 0.000 description 12
- 239000003990 capacitor Substances 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 8
- 229920005591 polysilicon Polymers 0.000 description 8
- 235000012431 wafers Nutrition 0.000 description 8
- 238000001039 wet etching Methods 0.000 description 8
- 238000001312 dry etching Methods 0.000 description 7
- 230000002829 reductive effect Effects 0.000 description 7
- 239000000126 substance Substances 0.000 description 7
- 239000004020 conductor Substances 0.000 description 6
- 239000003989 dielectric material Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- QKCGXXHCELUCKW-UHFFFAOYSA-N n-[4-[4-(dinaphthalen-2-ylamino)phenyl]phenyl]-n-naphthalen-2-ylnaphthalen-2-amine Chemical compound C1=CC=CC2=CC(N(C=3C=CC(=CC=3)C=3C=CC(=CC=3)N(C=3C=C4C=CC=CC4=CC=3)C=3C=C4C=CC=CC4=CC=3)C3=CC4=CC=CC=C4C=C3)=CC=C21 QKCGXXHCELUCKW-UHFFFAOYSA-N 0.000 description 5
- 238000010924 continuous production Methods 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N hydrofluoric acid Substances F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- 238000001020 plasma etching Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 230000008570 general process Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000000937 inactivator Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000004377 microelectronic Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002210 silicon-based material Chemical group 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Images
Classifications
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- 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
- H01L21/3065—Plasma etching; Reactive-ion etching
-
- 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
- C23F4/00—Processes for removing metallic material from surfaces, not provided for in group C23F1/00 or C23F3/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B81—MICROSTRUCTURAL TECHNOLOGY
- B81C—PROCESSES OR APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OR TREATMENT OF MICROSTRUCTURAL DEVICES OR SYSTEMS
- B81C1/00—Manufacture or treatment of devices or systems in or on a substrate
- B81C1/00436—Shaping materials, i.e. techniques for structuring the substrate or the layers on the substrate
- B81C1/00555—Achieving a desired geometry, i.e. controlling etch rates, anisotropy or selectivity
- B81C1/00595—Control etch selectivity
-
- 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
- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
- H01L21/32133—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only
- H01L21/32135—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by vapour etching only
- H01L21/32136—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by vapour etching only using plasmas
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Geometry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Plasma & Fusion (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Micromachines (AREA)
- ing And Chemical Polishing (AREA)
- Drying Of Semiconductors (AREA)
Description
52 基体
54 アルミニウム層
56 窒化チタン層
58 二酸化シリコン層
60 材料層
61 経路
62 空間
68 縁
70 領域
71 機構
72 経路
74 ドーピングされた領域
75 基体
77 犠牲層
79 縁
80 導電インターフェイス
100 機構
101 二酸化シリコン層
102 窒化チタン層
104 窒化チタン部
105 アルミニウム内部接続層
106 チタン層
108 二酸化シリコン層
112 経路
114 上表面
116 領域
118 凹部構造
119 領域
120 機構
121 二酸化シリコン層
122 窒化チタン層
124 窒化チタン部
125 アルミニウム層
126 窒化チタン層
128 二酸化シリコン層
137 レバーアーム
160 マイクロミラー
162 ミラー材料
164 窒化チタン層
166 基体
167 開口部
168 ギャップ
170 回転可能な部分
171 アーム
Claims (10)
- 機構中に形成された材料層を選択的にエッチングする方法であって、
フッ素含有ガスからプラズマを形成するステップ、
該機構の温度を100℃よりも高く保持するステップ、
該機構の表面から該材料層に伸びる開口部を形成するステップ、
該材料層をエッチングするために該材料層を該プラズマに該開口部を介して曝露するステップ、および
該開口部を通してプラズマを該材料層に接触させることによって該材料層をエッチングして、該開口部の側壁上に暴露された材料層の少なくとも一部をとり除くステップであって、該エッチングステップの後に残る材料層が該開口部に対して横方向に配置され、該材料層がチタン、窒化チタン、チタン化合物及びチタン合金の中から選択されるステップを含むことを特徴とする方法。 - 請求項1記載の方法において、該フッ素含有ガスがNF3からなることを特徴とする方法。
- 請求項1記載の方法において、該プラズマを形成するステップが、さらに、500mTから50000mTの範囲の低圧でプラズマを形成するステップからなることを特徴とする方法。
- 請求項1記載の方法において、該開口部は、実質的に垂直な経路の開口部と実質的に水平な経路の開口部から選択されることを特徴とする方法。
- 請求項1記載の方法において、該開口部が少なくとも50:1の相対的に高いアスペクト比を呈することを特徴とする方法。
- 請求項1記載の方法において、該機構が、二酸化シリコン、多結晶シリコン、アモルファスシリコン、単結晶シリコン、窒化シリコン、タングステン、アルミニウム原子及びアルミニウム合金の中から選択された層からなることを特徴とする方法。
- 請求項1記載の方法において、該機構が上層及び下層からなり、該材料層が犠牲層からなり、該曝露するステップの後に該材料層の1もしくは2以上の領域が除去されることを特徴とする方法。
- 請求項1記載の方法において、該機構が、該材料層を挟む上層及び下層からなり、
該材料層が犠牲層からなり、該曝露するステップの後に該上層及び該下層が分離されることを特徴とする方法。 - 請求項1記載の方法において、該機構の温度を該保持するステップが、さらに、該機構の温度を100℃から200℃の間に保持するステップからなることを特徴とする方法。
- 請求項1記載の方法において、エッチング剤の基板に対する該材料層のエッチング比が、少なくとも10:1であることを特徴とする方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/675263 | 2003-09-30 | ||
US10/675,263 US7078337B2 (en) | 2003-09-30 | 2003-09-30 | Selective isotropic etch for titanium-based materials |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2005105416A JP2005105416A (ja) | 2005-04-21 |
JP2005105416A5 JP2005105416A5 (ja) | 2007-11-08 |
JP4855665B2 true JP4855665B2 (ja) | 2012-01-18 |
Family
ID=33311158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004278932A Expired - Lifetime JP4855665B2 (ja) | 2003-09-30 | 2004-09-27 | チタンベース材料の選択的等方性エッチングプロセス |
Country Status (5)
Country | Link |
---|---|
US (2) | US7078337B2 (ja) |
JP (1) | JP4855665B2 (ja) |
KR (1) | KR101214818B1 (ja) |
GB (1) | GB2408848A (ja) |
TW (1) | TW200518217A (ja) |
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DE60320391D1 (de) * | 2003-07-04 | 2008-05-29 | St Microelectronics Srl | Herstellungsverfahren für eine Halbleitervorrichtung mit einem hängenden Mikrosystem und entsprechende Vorrichtung |
US20060065622A1 (en) * | 2004-09-27 | 2006-03-30 | Floyd Philip D | Method and system for xenon fluoride etching with enhanced efficiency |
US7417783B2 (en) * | 2004-09-27 | 2008-08-26 | Idc, Llc | Mirror and mirror layer for optical modulator and method |
US7553684B2 (en) * | 2004-09-27 | 2009-06-30 | Idc, Llc | Method of fabricating interferometric devices using lift-off processing techniques |
GB0523715D0 (en) * | 2005-11-22 | 2005-12-28 | Cavendish Kinetics Ltd | Method of minimising contact area |
US7763546B2 (en) * | 2006-08-02 | 2010-07-27 | Qualcomm Mems Technologies, Inc. | Methods for reducing surface charges during the manufacture of microelectromechanical systems devices |
US7875484B2 (en) * | 2006-11-20 | 2011-01-25 | Alces Technology, Inc. | Monolithic IC and MEMS microfabrication process |
DE112007002810T5 (de) * | 2007-01-05 | 2009-11-12 | Nxp B.V. | Ätzverfahren mit verbesserter Kontrolle der kritischen Ausdehnung eines Strukturelements an der Unterseite dicker Schichten |
CN101808933B (zh) * | 2007-09-28 | 2013-05-01 | 高通Mems科技公司 | 多组件牺牲结构 |
US8507385B2 (en) * | 2008-05-05 | 2013-08-13 | Shanghai Lexvu Opto Microelectronics Technology Co., Ltd. | Method for processing a thin film micro device on a substrate |
US7928577B2 (en) * | 2008-07-16 | 2011-04-19 | Micron Technology, Inc. | Interconnect structures for integration of multi-layered integrated circuit devices and methods for forming the same |
US7719754B2 (en) * | 2008-09-30 | 2010-05-18 | Qualcomm Mems Technologies, Inc. | Multi-thickness layers for MEMS and mask-saving sequence for same |
CN102001616A (zh) * | 2009-08-31 | 2011-04-06 | 上海丽恒光微电子科技有限公司 | 装配和封装微型机电系统装置的方法 |
DE102010000666A1 (de) | 2010-01-05 | 2011-07-07 | Robert Bosch GmbH, 70469 | Bauelement mit einer mikromechanischen Mikrofonstruktur und Verfahren zu dessen Herstellung |
US8530985B2 (en) * | 2010-03-18 | 2013-09-10 | Chia-Ming Cheng | Chip package and method for forming the same |
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-
2003
- 2003-09-30 US US10/675,263 patent/US7078337B2/en not_active Expired - Lifetime
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2004
- 2004-08-10 TW TW093123935A patent/TW200518217A/zh unknown
- 2004-09-21 GB GB0420952A patent/GB2408848A/en not_active Withdrawn
- 2004-09-27 JP JP2004278932A patent/JP4855665B2/ja not_active Expired - Lifetime
- 2004-09-30 KR KR1020040078027A patent/KR101214818B1/ko not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
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TW200518217A (en) | 2005-06-01 |
KR101214818B1 (ko) | 2012-12-24 |
US20060226553A1 (en) | 2006-10-12 |
US7078337B2 (en) | 2006-07-18 |
US7476951B2 (en) | 2009-01-13 |
US20050068608A1 (en) | 2005-03-31 |
GB0420952D0 (en) | 2004-10-20 |
JP2005105416A (ja) | 2005-04-21 |
KR20050032010A (ko) | 2005-04-06 |
GB2408848A (en) | 2005-06-08 |
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