KR100950115B1 - 플라즈마 에칭 챔버용 실리콘 카바이드제 가스 공급판 및rf 전극 - Google Patents
플라즈마 에칭 챔버용 실리콘 카바이드제 가스 공급판 및rf 전극 Download PDFInfo
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Abstract
Description
추천 기재 | 표면 물질 | 예 | RF | |
플로우 가스와 접촉 | 고순도 저저항 소결 SiC, | CVD SiC | 가스 공급판 | 핫(hot) 또는 접지 |
가스와 접촉하지 않음 | 고순도 그래파이트, 변성 그래파이트, Si-함침 그래파이트, 고순도 소결 SiC | CVD SiC | RF 활성 또는 접지 링 | 핫 또는 접지 |
Claims (25)
- 용량 결합형 플라즈마 챔버(capacitive-coupled plasma chamber)에 이용되는 샤워헤드(showerhead)에 있어서,10 ohm-cm보다 낮은 비저항을 나타내는 소결된 SiC 또는 열간 프레스된 SiC로 이루어진 벌크층;상기 벌크층의 하면에 코팅된 CVD SiC 코팅층; 및상기 벌크층 및 상기 CVD SiC 코팅층을 관통하여 제공된 복수의 가스 주입홀을 포함하는 샤워헤드.
- 삭제
- 삭제
- 삭제
- 삭제
- 제1항에 있어서,상기 CVD SiC 코팅층이 0.1 ohm-cm 내지 1E8 ohm-cm의 비저항을 나타내는 샤워헤드.
- 제1항에 있어서,상기 복수의 가스 주입홀의 각각이, 제1 직경을 갖고 상기 벌크층을 관통하여 연장된 부분을 형성하는 제1 섹션, 및 상기 제1 직경보다 작은 직경을 갖고 상기 제1 섹션으로부터 상기 CVD SiC 코팅층을 관통하여 동축으로 연장된 제2 섹션을 포함하는 샤워헤드.
- 제1항에 있어서,상기 가스 주입홀이 상기 벌크층 및 상기 CVD 코팅층을 관통하는 홀을 천공하고, 상기 천공 후에 상기 샤워헤드를 어닐링함으로써 만들어지는 샤워헤드.
- 용량 결합형 플라즈마 챔버에 있어서,챔버 몸체;상기 챔버 몸체 내부에 제공되며, 그 안에 전극이 제공된 시편 홀더;상기 챔버 몸체의 상부에 제공되며, 10 ohm-cm보다 낮은 비저항을 나타내는 소결된 SiC 또는 열간 프레스된 SiC로 이루어진 벌크층; 상기 벌크층의 하면에 코팅된 CVD SiC 코팅층; 및 상기 벌크층 상기 CVD SiC 코팅층을 관통하여 제공된 복수의 가스 주입홀을 포함하는 샤워헤드; 및상기 전극과 상기 샤워헤드 사이에 결합된 RF 전원을 포함하는 플라즈마 챔버.
- 삭제
- 삭제
- 제9항에 있어서,상기 CVD SiC 코팅층이 0.1 ohm-cm 내지 1E8 ohm-cm의 비저항을 나타내는 플라즈마 챔버.
- 제9항에 있어서,상기 샤워헤드 위에 설치된 온도 제어부, 및 상기 온도 제어부와 상기 샤워헤드 사이에 제공된 열전도성 필름을 더 포함하는 플라즈마 챔버.
- 제9항에 있어서,상기 복수의 가스 주입홀의 각각이, 제1 직경을 갖고 상기 벌크층을 관통하여 연장된 부분을 형성하는 제1 섹션, 및 상기 제1 직경보다 작은 직경을 갖고 상기 제1 섹션으로부터 상기 CVD SiC 코팅층을 관통하여 동축으로 연장된 제2 섹션을 포함하는 플라즈마 챔버.
- 벌크층, 및 플라즈마 침식(plasma erosion)에 민감한 CVD 코팅층을 포함하는 샤워헤드를 재사용하는 방법에 있어서,a. 상기 CVD 코팅층의 최대 침식 허용치를 가리키는 최저 한계치를 설정하는 단계;b. 플라즈마 챔버 상에 상기 샤워헤드를 장착하는 단계;c. 상기 플라즈마 챔버에서 플라즈마 공정을 실행하는 단계;d. 상기 최저 한계치에 도달했는지 결정하여, 도달했다면 단계 e로 진행하고, 도달하지 않았다면 단계 c로 되돌아가는 단계;e. 상기 챔버로부터 상기 샤워헤드를 제거하는 단계;f. 남아있는 CVD 코팅층을 제거하는 단계;g. 새로운 CVD 코팅층을 증착하고, 증착된 CVD 코팅층을 관통하여 가스 홀을 천공하는 단계;h. 단계 b로 되돌아가는 단계를 포함하는 샤워헤드의 재사용 방법.
- 제15항에 있어서,상기 단계 g는 CVD SiC 코팅층을 증착하는 단계를 포함하는 샤워헤드의 재사용 방법.
- 제15항에 있어서,상기 단계 d는 상기 최저 한계치에 도달할 때마다 이를 사용자에게 통지하는 단계를 더 포함하는 샤워헤드의 재사용 방법.
- 제15항에 있어서,상기 단계 d에서 상기 최저 한계치에 도달했는지 여부를 결정하는 단계는, 평균 침식 속도, 표면 구조 변화로 인한 공정 시프트(process shift), 또는 미리 정해진 플라즈마 시간(plasma hours)으로부터 CVD 코팅층의 수명을 평가함으로써 실현되는 샤워헤드의 재사용 방법.
- 제15항에 있어서,상기 단계 g는 상기 가스 홀을 천공하는 단계 후에 상기 샤워헤드를 어닐링하는 단계를 더 포함하는 샤워헤드의 재사용 방법.
- 에칭 플라즈마 챔버의 샤워헤드 어셈블리용 전도성 링에 있어서,10 ohm-cm보다 낮은 비저항을 가지는 소결된 SiC 또는 열간 프레스된 SiC로 이루어진 벌크부; 및상기 벌크부 상에 코팅된 CVD SiC 코팅층을 포함하는 전도성 링.
- 삭제
- 에칭 챔버용 상부 전극 어셈블리에 있어서,10 ohm-cm보다 낮은 비저항을 나타내는 소결된 SiC 또는 열간 프레스된 SiC로 이루어진 벌크층 및 상기 벌크층의 하면에 코팅된 CVD SiC 코팅층을 포함하는 샤워헤드;상기 샤워헤드에 인접하여 위치한 온도 제어부; 및상기 온도 제어부와 상기 샤워헤드 사이에 제공된 열전도성 필름을 포함하는 상부 전극 어셈블리.
- 제22항에 있어서,상기 열전도성 필름은 상기 샤워헤드와 접촉하는 상기 온도 제어부의 표면에 제공된 용사층(sprayed layer)을 포함하는 어셈블리.
- 제23항에 있어서,상기 열전도성 필름이 테프론(Teflon) 및 캡톤(Kapton) 중 하나인 어셈블리.
- 제1항에 있어서,상기 벌크층과 상기 CVD 코팅층 사이에 제공된 접착제를 더 포함하는 샤워헤드.
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CN200710037701A CN100577866C (zh) | 2007-02-27 | 2007-02-27 | 应用于等离子体反应室中的气体喷头组件、其制造方法及其翻新再利用的方法 |
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JP2008211183A (ja) | 2008-09-11 |
CN100577866C (zh) | 2010-01-06 |
KR20080079584A (ko) | 2008-09-01 |
JP3178150U (ja) | 2012-09-06 |
CN101255552A (zh) | 2008-09-03 |
US20080202688A1 (en) | 2008-08-28 |
US7992518B2 (en) | 2011-08-09 |
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