KR101115439B1 - 이중 음극 주파수 혼합을 사용한 플라즈마 제어 - Google Patents
이중 음극 주파수 혼합을 사용한 플라즈마 제어 Download PDFInfo
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- KR101115439B1 KR101115439B1 KR1020040082295A KR20040082295A KR101115439B1 KR 101115439 B1 KR101115439 B1 KR 101115439B1 KR 1020040082295 A KR1020040082295 A KR 1020040082295A KR 20040082295 A KR20040082295 A KR 20040082295A KR 101115439 B1 KR101115439 B1 KR 101115439B1
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- H—ELECTRICITY
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
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- 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
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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
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Abstract
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Claims (32)
- 이중 주파수 RF 소오스를 사용하여 반도체 기판 공정 챔버 내의 플라즈마 특성들을 제어하는 방법에 있어서,공정 챔버 내에 배치된 제1 전극에 제1 RF 신호를 공급하고,상기 제1 전극에 제2 RF 신호를 공급하는 것을 포함하되,상기 제1 및 제2 RF 신호들 사이의 상호작용이 상기 공정 챔버내에 형성된 플라즈마의 적어도 하나의 특성을 제어하기 위해 사용되는 플라즈마 특성 제어 방법.
- 청구항 1에 있어서,상기 플라즈마 특성은 적어도 쉬스 변형(sheath modulation)이고, 상기 제1 RF 신호는 넓은 이온 에너지 분포를 제공하고, 상기 제2 RF 신호는 끝이 뾰족한, 잘 정의된 이온 에너지 분포를 제공하는 플라즈마 특성 제어 방법.
- 청구항 2에 있어서,상기 제1 RF 신호는 상기 쉬스 내에서 이온의 통과 시간보다 더 긴 사이클 시간을 가지며, 상기 제2 RF 신호는 상기 쉬스 내에서 이온의 통과 시간과 동일하거나 이보다 더 큰 주기를 갖는 플라즈마 특성 제어 방법.
- 청구항 1에 있어서,상기 플라즈마 특성은 적어도 쉬스 변형(sheath modulation)이고, 상기 제1 및 제2 RF 신호의 조합된 인가 전압이 피크-피크(peak-to-peak) 쉬스 전압 및 자기-바이어스된 DC 전위를 제어하기 위해 사용되는 플라즈마 특성 제어 방법.
- 청구항 4에 있어서,상기 제1 및 제2 RF 신호들 사이의 상호작용은 그들의 인가된 파워의 비율이고, 상기 비율은 상기 DC 전위에 의해 생성되는 평균 가속 근처에서 에너지 분포를 조정하기 위해 사용되는 플라즈마 특성 제어 방법.
- 청구항 1에 있어서,제2 전극에 제3 RF 신호를 공급하여 상기 플라즈마를 형성하는 것을 더 포함하는 플라즈마 특성 제어 방법.
- 청구항 1에 있어서,상기 플라즈마 특성은 적어도 상기 플라즈마 내 파워 분포이고, 상기 제1 및 제2 RF 신호들은 동일한 플라즈마 여기 특성들 및 다른 공간 균일성 프로파일들을 제공하는 플라즈마 특성 제어 방법.
- 청구항 7에 있어서,상기 제1 및 제2 RF 신호들 사이의 상호작용은 상기 플라즈마 내 파워 분포에 대한 가변 효과를 제공하고,상기 제1 및 제2 RF 신호들은 상기 제1 및 제2 RF 신호들의 조합된 효과가 평평한 파워 분포를 생성하도록 선택되거나, 상기 제1 및 제2 RF 신호들 사이의 상호작용이 플라즈마 강화 식각 공정의 균일성을 제어하기 위해 사용되는 플라즈마 특성 제어 방법.
- 반도체 기판 공정 시스템에서 플라즈마 특성들을 제어하기 위한 장치에 있어서,공정 챔버 내에 배치된 제1 전극;매치 네트워크를 통해 상기 제1 전극에 결합된 제1 RF 신호를 공급하기 위한 제1 RF 소오스; 및상기 매치 네트워크를 통해 상기 제1 전극에 결합된 제2 RF 신호를 공급하기 위한 제2 RF 소오스를 포함하되,상기 매치 네트워크는 상기 제1 전극에의 단일의 전송장치(feed)를 가지며,적어도 하나의 플라즈마 특성을 제어하기 위해 조작가능한 상호작용을 제공하도록 상기 제1 및 제2 RF 소오스들을 제어하는 플라즈마 특성들을 제어하기 위한 장치.
- 청구항 9에 있어서,상기 챔버 내에 배치된 제2 전극에 결합된 제3 RF 신호를 공급하기 위한 제3 RF 소오스를 더 포함하는 플라즈마 특성들을 제어하기 위한 장치.
- 청구항 10에 있어서,상기 제1 전극은 상기 공정 챔버 내에 포함된 기판 지지 페데스탈에 배치되고, 상기 제2 전극은 상기 지지 페데스탈 상부의 상기 공정 챔버 천장 근처에 배치된 플라즈마 특성들을 제어하기 위한 장치.
- 청구항 9에 있어서,상기 제1 전극은 상기 공정 챔버 내에 포함된 기판 지지 페데스탈에 배치된 플라즈마 특성들을 제어하기 위한 장치.
- 청구항 9에 있어서,상기 장치가 제어하는 상기 플라즈마 특성은 적어도 쉬스 변형(sheath modulation)이고, 상기 제1 RF 신호는 넓은 이온 에너지 분포를 제공하고, 상기 제2 RF 신호는 끝이 뾰족한, 잘 정의된 이온 에너지 분포를 제공하는 플라즈마 특성들을 제어하기 위한 장치.
- 청구항 13에 있어서,상기 제1 RF 신호는 상기 쉬스 내에서 이온의 통과 시간보다 더 긴 사이클 시간를 가지며, 상기 제2 RF 신호는 상기 쉬스 내에서 이온의 통과시간과 동일하거나 이보다 더 큰 주기를 갖는 플라즈마 특성들을 제어하기 위한 장치.
- 청구항 9에 있어서,상기 장치가 제어하는 상기 플라즈마 특성은 적어도 쉬스 변형(sheath modulation)이고, 상기 제1 및 제2 RF 신호의 조합된 인가 전압이 피크-피크(peak-to-peak) 쉬스 전압 및 자기-바이어스된 DC 전위를 제어하는 플라즈마 특성들을 제어하기 위한 장치.
- 청구항 15에 있어서,상기 장치가 제어하는 상기 제1 및 제2 RF 신호들 사이의 조작가능한 상호작용은 그들의 인가된 파워 비율이고, 상기 비율은 상기 DC 전위에 의해 생성되는 평균 가속 근처에서 에너지 분포를 조정하는 플라즈마 특성들을 제어하기 위한 장치.
- 청구항 9에 있어서,상기 장치가 제어하는 상기 플라즈마 특성은 상기 플라즈마 특성은 적어도 상기 플라즈마 내 파워 분포이고, 상기 제1 및 제2 RF 신호들은 동일한 플라즈마 여기 특성들 및 다른 공간 균일성 프로파일들을 제공하는 플라즈마 특성들을 제어하기 위한 장치.
- 청구항 17에 있어서,상기 제1 및 제2 RF 신호들 사이의 조작가능한 상호작용은 상기 플라즈마 내 파워 분포에 대한 가변 효과를 제공하고, 상기 제1 및 제2 RF 신호들은 상기 제1 및 제2 RF 신호들의 조합된 효과가 평평한 파워 분포를 생성하도록 선택되는 플라즈마 특성들을 제어하기 위한 장치.
- 청구항 16에 있어서,상기 제1 및 제2 RF 신호들 사이의 조작가능한 상호작용은 상기 플라즈마 내 파워 분포에 대한 가변 효과를 제공하고, 상기 제1 및 제2 RF 신호들 사이의 조작가능한 상호작용은 플라즈마 강화 식각 공정의 균일성을 제어하는 플라즈마 특성들을 제어하기 위한 장치.
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Application Number | Priority Date | Filing Date | Title |
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US51499303P | 2003-10-28 | 2003-10-28 | |
US60/514,993 | 2003-10-28 | ||
US10/823,364 US7838430B2 (en) | 2003-10-28 | 2004-04-12 | Plasma control using dual cathode frequency mixing |
US10/823,364 | 2004-04-12 |
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KR101115439B1 true KR101115439B1 (ko) | 2012-04-18 |
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US (2) | US7838430B2 (ko) |
KR (1) | KR101115439B1 (ko) |
CN (2) | CN101094557A (ko) |
TW (1) | TWI356452B (ko) |
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Also Published As
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TW200515507A (en) | 2005-05-01 |
KR20050040709A (ko) | 2005-05-03 |
CN101094557A (zh) | 2007-12-26 |
US20070000611A1 (en) | 2007-01-04 |
US20050090118A1 (en) | 2005-04-28 |
US7838430B2 (en) | 2010-11-23 |
CN1655328A (zh) | 2005-08-17 |
TWI356452B (en) | 2012-01-11 |
CN100337314C (zh) | 2007-09-12 |
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