KR100766162B1 - 부하 부정합 신뢰성 및 안정성을 갖는 vhf 플라즈마처리 방법 및 장치 - Google Patents
부하 부정합 신뢰성 및 안정성을 갖는 vhf 플라즈마처리 방법 및 장치 Download PDFInfo
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- KR100766162B1 KR100766162B1 KR1020047018698A KR20047018698A KR100766162B1 KR 100766162 B1 KR100766162 B1 KR 100766162B1 KR 1020047018698 A KR1020047018698 A KR 1020047018698A KR 20047018698 A KR20047018698 A KR 20047018698A KR 100766162 B1 KR100766162 B1 KR 100766162B1
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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
- H01J37/32174—Circuits specially adapted for controlling the RF discharge
- H01J37/32183—Matching circuits
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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
- H01J37/32174—Circuits specially adapted for controlling the RF 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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/32—Non-reciprocal transmission devices
- H01P1/38—Circulators
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
- H03H7/0161—Bandpass filters
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05H—PLASMA TECHNIQUE; PRODUCTION OF ACCELERATED ELECTRICALLY-CHARGED PARTICLES OR OF NEUTRONS; PRODUCTION OR ACCELERATION OF NEUTRAL MOLECULAR OR ATOMIC BEAMS
- H05H1/00—Generating plasma; Handling plasma
- H05H1/24—Generating plasma
- H05H1/46—Generating plasma using applied electromagnetic fields, e.g. high frequency or microwave energy
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Abstract
Description
| 부하 부정합 정도 | 최악 위상의 순방향 전력 | |
| VSWR | 전력 반사율 | 전력 출력, W |
| 1.0 | 0.0% | 2500 |
| 1.5 | 4.0% | 2250 |
| 2.0 | 11.1% | 1800 |
| 3.0 | 25.0% | 1350 |
| 5.0 | 44.4% | 1250 |
| 10.0 | 66.9% | 1000 |
| 30.0 | 87.5% | 750 |
| ∞ | 100% | 500 |
Claims (24)
- 비선형 부하 부정합 상태들에 견디는 플라즈마 처리 시스템용 무선 주파수(RF) 발생기 장치에 있어서,RF 신호를 발생시키도록 구성된 RF 발진기와,상기 RF 신호에 응답하여 플라즈마 챔버 부하를 구동시키기에 충분한 전력을 갖는 VHF RF 신호를 발생시키는 RF 증폭기와,상기 RF 증폭기에 결합되며 상기 RF 증폭기로부터 상기 플라즈마 챔버 부하의 비선형성을 분리시키도록 구성된 VHF 대역 서큘레이터(circulator)를 포함하는 RF 발생기 장치로서,상기 RF 신호의 주파수를 조절하도록 구성된 제어 기판, 상기 서큘레이터의 출력에 결합되어 그로부터 RF 전력을 수신하는 입력을 갖는 방향성 커플러, 및 상기 제어 기판에 상기 서큘레이터의 상기 출력에서의 RF 전력량을 나타내는 신호를 공급하도록 구성된 센서를 더 포함하며, 상기 제어 기판은 RF 전력량을 나타내는 상기 신호에 응답하여 상기 RF 신호의 상기 주파수를 조절하는 RF 발생기 장치.
- 제1항에 있어서,상기 VHF 대역 서큘레이터는 Y-접합 서큘레이터를 포함하는 RF 발생기 장치.
- 제1항에 있어서,상기 RF 증폭기는 드라이버, 전력 증폭기, 제1 90°하이브리드 커플러, 및 제2 90°하이브리드 커플러를 포함하며, 상기 제1 90°하이브리드 커플러는 상기 전력 증폭기에서 상기 드라이버를 분리시키는 양방향성 스플리터로서 구성되고, 상기 전력 증폭기는 두 개의 절반부를 포함하며, 상기 제2 90°하이브리드 커플러는 상기 전력 증폭기의 상기 두 절반부의 출력들을 결합하는 양방향성 결합기로서 구성되는 RF 발생기 장치.
- 삭제
- 제1항에 있어서,입력이 상기 방향성 커플러의 출력에 결합된 저역 통과 필터를 더 포함하는 RF 발생기 장치.
- 제5항에 있어서,상기 저역 통과 필터의 출력에 결합되며 상기 플라즈마 챔버 부하에 결합된 신호 내의 RF 고조파를 접지로 분로시키도록 구성된 입력을 갖는 고역 통과 필터를 더 포함하는 RF 발생기 장치.
- 제6항에 있어서,상기 저역 통과 필터의 출력에 결합된 입력과 상기 플라즈마 챔버 부하에 전력을 공급하도록 구성된 출력을 갖는 부하 정합 회로망(load match network)을 더 포함하며, 상기 부하 정합 회로망은 한 세트의 동작 조건 하에서 상기 RF 발생기 장치의 출력 임피던스를 상기 플라즈마 챔버 부하와 정합시키도록 구성된 RF 발생기 장치.
- 제1항에 있어서,VHF 주파수의 적어도 2.5㎾ RF 전력을 발생하도록 구성된 RF 발생기 장치.
- 제8항에 있어서,상기 RF 증폭기는 푸쉬풀 구성의 16개 이하의 출력 트랜지스터를 포함하는 RF 발생기 장치.
- 제1항에 있어서,제1 섀시, 상기 제1 섀시 내에 하우징된 전력 공급 장치, 상기 RF 발진기 및 상기 RF 증폭기를 제어하도록 구성된 제어 기판, 상기 제1 섀시와 독립된 제2 섀시, 및 상기 제2 섀시 내에 하우징된 히트 싱크를 포함하고, 상기 제2 섀시에는 상기 RF 증폭기 및 상기 VHF 대역 서큘레이터가 더 하우징되는 RF 발생기 장치.
- 제1항에 있어서,상기 VHF 대역 서큘레이터는 집중 회로 소자들(lumped circuit elements)을 포함하는 RF 발생기 장치.
- 제1항에 있어서,상기 VHF 대역 서큘레이터는 수동의 비가역적 페라이트 디바이스를 포함하는 RF 발생기 장치.
- 제1항에 있어서,상기 RF 발진기는 직접 디지털 합성기를 포함하는 RF 발생기 장치.
- 제1항에 있어서,상기 RF 발진기는 위상 동기 루프에서 동작하는 전압 제어 발진기를 포함하는 RF 발생기 장치.
- 플라즈마 처리 시스템에 있어서,플라즈마 챔버와,상기 플라즈마 챔버에 동작가능하게 결합되어 VHF 주파수의 RF 전력을 상기 플라즈마 챔버에 공급하는 무선 주파수(RF) 발생기 장치로서, 상기 RF 발생기 장치는 상기 RF 발생기 장치에 공급되는 상기 RF 전력을 발생하도록 구성된 RF 증폭기와 상기 플라즈마 챔버에 상기 RF 전력을 공급하며 상기 RF 증폭기로부터 상기 플라즈마 챔버의 비선형성을 분리시키도록 구성된 출력을 갖는 VHF 대역 서큘레이터를 포함하는 RF 발생기 장치를 포함하는 플라즈마 처리 시스템으로서,상기 RF 증폭기는 드라이버, 전력 증폭기, 제1 90°하이브리드 커플러, 및 제2 90°하이브리드 커플러를 포함하며, 상기 제1 90°하이브리드 커플러는 상기 전력 증폭기로부터 상기 드라이버를 분리시키는 양방향성 스플리터로서 구성되고, 상기 전력 증폭기는 두 개의 절반부를 포함하며, 상기 제2 90°하이브리드 커플러는 상기 전력 증폭기의 상기 두 절반부의 출력들을 결합하는 양방향성 결합기로서 구성되는 플라즈마 처리 시스템.
- 제15항에 있어서,상기 VHF 대역 서큘레이터는 Y-접합 서큘레이터를 포함하는 플라즈마 처리 시스템.
- 삭제
- 제15항에 있어서,상기 플라즈마 챔버에 공급되는 상기 RF 전력의 주파수를 조절하도록 구성된 제어 기판, 상기 서큘레이터의 출력에 결합되어 그로부터 RF 전력을 수신하는 입력을 갖는 방향성 커플러, 및 상기 제어 기판에 상기 서큘레이터의 상기 출력에서의 RF 전력량을 나타내는 신호를 공급하도록 구성된 센서를 더 포함하며, 상기 제어 기판은 RF 전력량을 나타내는 상기 신호에 응답하여 상기 RF 전력의 상기 주파수를 조절하는 플라즈마 처리 시스템.
- 제18항에 있어서,상기 방향성 커플러와 상기 플라즈마 챔버 사이에서 동작가능하게 결합되어 상기 방향성 커플러를 통과하는 RF 전력에서의 고조파를 감소시키는 저역 통과 필터를 더 포함하는 플라즈마 처리 시스템.
- 제19항에 있어서,상기 고조파를 접지로 분로시키도록 구성된 고역 통과 필터를 더 포함하는 플라즈마 처리 시스템.
- VHF 주파수의 RF 전력을 비선형 플라즈마 챔버 부하에 공급하기 위한 방법에 있어서,RF 발생기의 출력 스테이지에서 VHF RF 전력을 발생시키는 단계와,상기 VHF RF 전력을 VHF 대역 서큘레이터로 통과시키는 단계와,상기 VHF 대역 서큘레이터를 통과한 상기 VHF RF 전력을 플라즈마 챔버 부하에 인가시키는 단계를 포함하는 방법으로서,상기 RF 발생기의 출력 스테이지로부터 출력된 RF 전력량을 방향성 커플러를 이용하여 감지하는 단계와,상기 RF 전력의 주파수를 상기 감지된 RF 전력량에 따라 조정하는 단계와,상기 방향성 커플러로부터 나온 상기 RF 전력의 고조파를 상기 플라즈마 챔버 부하와 상기 VHF 대역 서큘레이터/아이솔레이터(isolator) 사이에 동작가능하게 결합된 저역 통과 필터를 이용하여 분리시키는 단계를 더 포함하는 방법.
- 삭제
- 제21항에 있어서,상기 RF 전력의 고조파를 상기 플라즈마 챔버 부하와 상기 방향성 커플러 사이의 접지로 분로시키는 단계를 더 포함하는 방법.
- 제21항에 있어서,상기 RF 전력의 주파수를 상기 감지된 RF 전력량에 따라 조정하는 단계를 더 포함하는 방법.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/151,425 US6703080B2 (en) | 2002-05-20 | 2002-05-20 | Method and apparatus for VHF plasma processing with load mismatch reliability and stability |
| US10/151,425 | 2002-05-20 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| KR1020077004930A Division KR100807908B1 (ko) | 2002-05-20 | 2003-04-14 | 부하 부정합 신뢰성 및 안정성을 갖는 vhf 플라즈마처리 방법 및 장치 |
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| Publication Number | Publication Date |
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| KR20050029122A KR20050029122A (ko) | 2005-03-24 |
| KR100766162B1 true KR100766162B1 (ko) | 2007-10-10 |
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| KR1020047018698A Expired - Fee Related KR100766162B1 (ko) | 2002-05-20 | 2003-04-14 | 부하 부정합 신뢰성 및 안정성을 갖는 vhf 플라즈마처리 방법 및 장치 |
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| Country | Link |
|---|---|
| US (1) | US6703080B2 (ko) |
| EP (1) | EP1506564A2 (ko) |
| JP (2) | JP2005527078A (ko) |
| KR (1) | KR100766162B1 (ko) |
| CN (1) | CN100530508C (ko) |
| AU (1) | AU2003226071A1 (ko) |
| WO (1) | WO2003101160A2 (ko) |
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| EP1783904B1 (de) * | 2005-10-17 | 2008-04-16 | HÜTTINGER Elektronik GmbH + Co. KG | HF-Plasmaversorgungseinrichtung |
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- 2003-04-14 KR KR1020047018698A patent/KR100766162B1/ko not_active Expired - Fee Related
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| JP2005527078A (ja) | 2005-09-08 |
| EP1506564A2 (en) | 2005-02-16 |
| AU2003226071A1 (en) | 2003-12-12 |
| JP2010182683A (ja) | 2010-08-19 |
| CN1656593A (zh) | 2005-08-17 |
| US6703080B2 (en) | 2004-03-09 |
| AU2003226071A8 (en) | 2003-12-12 |
| CN100530508C (zh) | 2009-08-19 |
| US20030215373A1 (en) | 2003-11-20 |
| KR20050029122A (ko) | 2005-03-24 |
| WO2003101160A2 (en) | 2003-12-04 |
| WO2003101160A3 (en) | 2004-03-25 |
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