KR20030045069A - 실리콘 고속 에칭방법 - Google Patents
실리콘 고속 에칭방법 Download PDFInfo
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- KR20030045069A KR20030045069A KR10-2003-7003805A KR20037003805A KR20030045069A KR 20030045069 A KR20030045069 A KR 20030045069A KR 20037003805 A KR20037003805 A KR 20037003805A KR 20030045069 A KR20030045069 A KR 20030045069A
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- etching
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- 238000005530 etching Methods 0.000 title claims abstract description 212
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 122
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 122
- 239000010703 silicon Substances 0.000 title claims abstract description 122
- 238000000034 method Methods 0.000 title claims abstract description 82
- 230000008569 process Effects 0.000 claims abstract description 13
- 239000002245 particle Substances 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 118
- 230000007246 mechanism Effects 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 11
- 150000002222 fluorine compounds Chemical class 0.000 claims description 10
- 230000001965 increasing effect Effects 0.000 claims description 10
- 230000005684 electric field Effects 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims description 4
- 230000005672 electromagnetic field Effects 0.000 claims description 3
- 230000007935 neutral effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 2
- 239000001301 oxygen Substances 0.000 claims 2
- 230000005415 magnetization Effects 0.000 claims 1
- 150000002500 ions Chemical class 0.000 abstract description 7
- 238000001020 plasma etching Methods 0.000 description 10
- 239000002826 coolant Substances 0.000 description 8
- 238000001816 cooling Methods 0.000 description 8
- -1 quartz Chemical compound 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000009616 inductively coupled plasma Methods 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 238000000609 electron-beam lithography Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005459 micromachining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—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
- H01L21/32137—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 of silicon-containing layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
- H01J37/32091—Radio frequency generated discharge the radio frequency energy being capacitively coupled to the plasma
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32009—Arrangements for generation of plasma specially adapted for examination or treatment of objects, e.g. plasma sources
- H01J37/32082—Radio frequency generated discharge
- H01J37/32137—Radio frequency generated discharge controlling of the discharge by modulation of energy
- H01J37/32155—Frequency modulation
- H01J37/32165—Plural frequencies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
- H01J37/32—Gas-filled discharge tubes
- H01J37/32431—Constructional details of the reactor
- H01J37/3266—Magnetic control means
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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 at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/3065—Plasma etching; Reactive-ion etching
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
- H01L21/308—Chemical or electrical treatment, e.g. electrolytic etching using masks
- H01L21/3081—Chemical or electrical treatment, e.g. electrolytic etching using masks characterised by their composition, e.g. multilayer masks, materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2237/00—Discharge tubes exposing object to beam, e.g. for analysis treatment, etching, imaging
- H01J2237/32—Processing objects by plasma generation
- H01J2237/33—Processing objects by plasma generation characterised by the type of processing
- H01J2237/334—Etching
- H01J2237/3343—Problems associated with etching
- H01J2237/3347—Problems associated with etching bottom of holes or trenches
Abstract
Description
Claims (30)
- 진공 유지 가능한 처리 챔버 내부의 처리 공간에 접하도록 실리콘 영역을 갖는 피처리체를 설치하는 단계;상기 처리 공간에 에칭 가스를 도입하여 가스 분위기를 생성하는 단계; 및고주파 전력을 인가함으로써 플라즈마를 발생시키고, 그 속에서 상기 피처리체의 실리콘 영역을 고속으로 에칭하는 단계를 포함하는 실리콘 고속 에칭방법에 있어서,상기 플라즈마 발생시 처리 공간의 가스 압력을 13 내지 1333Pa(100mTorr 내지 10Torr)로 하는 것을 특징으로 하는실리콘 고속 에칭방법.
- 제 1 항에 있어서,처리 공간 내부의 가스 압력을 26 내지 133Pa(200mTorr 내지 1Torr)로 하는 것을 특징으로 하는 실리콘 고속 에칭방법.
- 제 1 항에 있어서,처리 공간 내부의 플라즈마 생성 영역과 피처리체의 에칭면과의 거리가 20mm 이하인 실리콘 고속 에칭방법.
- 제 1 항에 있어서,에칭 가스가 불소 화합물 가스를 포함하는 실리콘 고속 에칭방법.
- 제 4 항에 있어서,불소 화합물 가스의 분자식이 AxFy(여기서, A는 임의의 원소이고, x 및 y는 가수(價數)이다)로 나타나는 경우 y가 4 이상인 것인 실리콘 고속 에칭방법.
- 제 5 항에 있어서,불소 화합물 가스의 y가 6 이상인 실리콘 고속 에칭방법.
- 제 4 항에 있어서,에칭 가스가 산소를 추가로 포함하는 실리콘 고속 에칭방법.
- 제 7 항에 있어서,에칭 가스가 SF6및 O2를 포함하고, O2/SF6가 0.1 내지 0.5인 실리콘 고속 에칭방법.
- 제 4 항에 있어서,에칭 가스가 SF6및 C4F8를 포함하고, C4F8/SF6가 0.3 내지 0.6인 실리콘 고속 에칭방법.
- 제 1 항에 있어서,플라즈마 생성 기구가 서로 대향하는 한 쌍의 전극 사이에 고주파 전기장을 형성하여 플라즈마를 생성하는 용량 결합형인 실리콘 고속 에칭방법.
- 제 10 항에 있어서,플라즈마 생성 기구가, 피처리체가 위치되는 전극에 플라즈마 생성용의 고주파가 인가되는 RIE 유형의 것인 실리콘 고속 에칭방법.
- 제 11 항에 있어서,전극 사이에 전기장과 직교하는 자기장을 형성하면서 에칭을 실시하는 실리콘 고속 에칭방법.
- 진공 유지 가능한 처리 챔버; 상기 처리 챔버 내부에서 처리 공간이 개재된 상태로 설치되는 한 쌍의 전극; 상기 피처리체가 유지되는 전극에 플라즈마 발생용의 고주파 전력을 인가하고, 상기 처리 공간에 고주파 전기장을 형성하는 고주파 전원 수단; 상기 처리 공간 내부에 에칭 가스를 도입하여 가스 분위기를 생성하는 에칭 가스 도입 기구; 및 상기 처리 공간에 고주파 전기장 방향과 직교하고 한 방향으로 향하는 자기장을 형성하는 자기장 형성 수단을 포함하는 마그네트론 에칭 장치를사용하는 실리콘 고속 에칭방법에 있어서,상기 처리 공간 내부에 직교 전자기장을 발생시켜 가스 분위기 속에서 플라즈마를 발생시키고,피처리체의 피에칭면의 실리콘 영역이 상기 플라즈마에 접하도록 설치하고,상기 실리콘 영역을 고속 에칭하는 것을 포함하며,상기 실리콘 영역을 고속 에칭하는 경우 상기 처리 공간 내부의 가스 압력을 13 내지 1333Pa(100mTorr 내지 10Torr)로 하여 에칭을 실시하는실리콘 고속 에칭방법.
- 제 13 항에 있어서,처리 공간 내부의 가스 압력을 26 내지 133Pa(200mTorr 내지 1Torr)로 하여 에칭을 실시하는 실리콘 고속 에칭방법.
- 제 14 항에 있어서,자기장 형성 수단이, 복수의 이방성 세그먼트 자석이 상기 처리 챔버 주위에 환형으로 배치되고, 상기 각각의 이방성 세그먼트 자석의 자화 방향이 전극간에 동일한 한 방향 자기장을 형성하도록 설정된 쌍극자 링(dipole ring) 자석을 갖는 실리콘 고속 에칭방법.
- 제 13 항에 있어서,에칭 가스가 불소 화합물 가스를 포함하는 실리콘 고속 에칭방법.
- 제 16 항에 있어서,불소 화합물 가스의 분자식이 AxFy(여기서, A는 임의의 원소이고, x 및 y는 가수이다)로 나타나는 경우 y가 4 이상인 것인 실리콘 고속 에칭방법.
- 제 17 항에 있어서,불소 화합물 가스의 y가 6 이상인 실리콘 고속 에칭방법.
- 제 16 항에 있어서,에칭 가스가 산소를 추가로 포함하는 실리콘 고속 에칭방법.
- 제 19 항에 있어서,에칭 가스가 SF6및 O2를 포함하고, O2/SF6가 0.1 내지 0.5인 실리콘 고속 에칭방법.
- 제 16 항에 있어서,에칭 가스가 SF6및 C4F8을 포함하고, C4F8/SF6가 0.3 내지 0.6인 실리콘 고속 에칭방법.
- 제 13 항에 있어서,고주파 전원이 27MHz 이상의 고주파 전력을 인가하는 실리콘 고속 에칭방법.
- 제 22 항에 있어서,고주파 전원이 40 내지 200MHz의 고주파 전력을 인가하는 실리콘 고속 에칭방법.
- 제 13 항에 있어서,자기장 형성 수단이 피처리체의 존재 영역에 10000μT(100G) 이상의 자기장을 형성하는 실리콘 고속 에칭방법.
- 제 13 항에 있어서,고주파 전원과는 상이한 고주파 전원으로부터, 주파수가 플라즈마 형성용의 고주파 전력의 주파수보다 작고 2MHz 이상인 고주파 전력을 상기 플라즈마 형성용의 고주파 전력에 중첩시키는 실리콘 고속 에칭방법.
- 제 1 항에 있어서,에칭을 실시하는 피처리체의 에칭 개구율이 피처리체 표면의 10% 이하인 실리콘 고속 에칭방법.
- 제 1 항에 있어서,실리콘 부분을 갖는 피처리체가 단결정 실리콘 기판인 실리콘 고속 에칭방법.
- 제 27 항에 있어서,실리콘 고속 에칭방법에 의해 단결정 실리콘 기판을 에칭하는 공정 후, 상기 실리콘 기판의 반대측 표면의 전체면 연삭 또는 전체면 에칭을 실시하여, 상기 실리콘 고속 에칭방법에 의해 실리콘 기판에 형성된 구멍 또는 홈이 상기 실리콘 기판을 관통하는 실리콘 고속 에칭방법.
- 제 1 항에 있어서,에칭을 실시하는 피처리체의 에칭 개구부의 치수가 10μm 이상인 실리콘 고속 에칭방법.
- 실리콘 기판에 구멍, 홈 또는 관통공(through hole)을 형성하기 위해 실리콘 영역을 에칭하는 에칭방법에 있어서,상기 실리콘 기판을 설치하고, 에칭을 위한 플라즈마를 발생시키는 처리 공간에서,상기 처리 공간에서의 플라즈마 밀도에 관여하지 않으면서, 실리콘 에칭에 기여하는 중성 입자인 라디칼의 개수와 이온의 하전 입자의 개수를 증대시키도록 상기 처리 공간의 에칭 가스의 가스 압력을 상승시키는실리콘 고속 에칭방법.
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JP2000280376A JP3920015B2 (ja) | 2000-09-14 | 2000-09-14 | Si基板の加工方法 |
JPJP-P-2000-00280376 | 2000-09-14 | ||
PCT/JP2001/007962 WO2002023609A1 (fr) | 2000-09-14 | 2001-09-13 | Procede de gravure de silicium a vitesse elevee |
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KR (1) | KR100875770B1 (ko) |
CN (1) | CN1284213C (ko) |
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KR100644181B1 (ko) * | 2004-04-29 | 2006-11-10 | 에어 프로덕츠 앤드 케미칼스, 인코오포레이티드 | 전자 부착을 이용하여 기판으로부터 물질을 제거하는 방법 |
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CN1284213C (zh) | 2006-11-08 |
TW506015B (en) | 2002-10-11 |
CN1459125A (zh) | 2003-11-26 |
US7022616B2 (en) | 2006-04-04 |
KR100875770B1 (ko) | 2008-12-24 |
EP1329948A4 (en) | 2007-09-12 |
US20040097079A1 (en) | 2004-05-20 |
AU2001288042A1 (en) | 2002-03-26 |
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WO2002023609A1 (fr) | 2002-03-21 |
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