KR101388329B1 - FinFET 소자를 제조하는 방법 - Google Patents
FinFET 소자를 제조하는 방법 Download PDFInfo
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- KR101388329B1 KR101388329B1 KR1020120104415A KR20120104415A KR101388329B1 KR 101388329 B1 KR101388329 B1 KR 101388329B1 KR 1020120104415 A KR1020120104415 A KR 1020120104415A KR 20120104415 A KR20120104415 A KR 20120104415A KR 101388329 B1 KR101388329 B1 KR 101388329B1
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- H10D84/834—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of at least one component covered by groups H10D12/00 or H10D30/00, e.g. integration of IGFETs of only field-effect components of only insulated-gate FETs [IGFET] comprising FinFETs
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- H10D84/83—Integrated devices formed in or on semiconductor substrates that comprise only semiconducting layers, e.g. on Si wafers or on GaAs-on-Si wafers characterised by the integration of at least one component covered by groups H10D12/00 or H10D30/00, e.g. integration of IGFETs of only field-effect components of only insulated-gate FETs [IGFET]
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Abstract
Description
도 1은 본 발명의 개시의 다양한 양상에 따른 FinFET 소자를 제조하기 위한 예시적인 방법의 흐름도이다.
도 2 내지 6은 본 발명 개시의 양상에 따라 구성된 FinFET 소자를 제조하는 다양한 스테이지에서 일 실시예의 단면도를 예증한다.
도 7은 본 발명의 개시의 다양한 양상에 따른 FinFET 소자를 제조하기 위한 예시적인 방법의 다른 흐름도이다.
도 8 내지 11a는 본 발명 개시의 양상에 따라 구성된 FinFET 소자를 제조하는 다양한 스테이지에서 일 실시예의 단면도를 예증한다.
도 11b는 본 발명의 개시의 다양한 양상에 따른 FinFET 소자의 평면도이다.
도 11c는 도 11b에서 라인 11c-11c를 따라 절단된 FinFET 소자의 단면도를 예증한다.
도 11d는 도 11b에서 라인 11d-11d를 따라 절단된 FinFET 소자의 단면도를 예증한다.
도 12는 본 발명 개시의 양상에 따라 구성된 FinFET 소자를 제조하는 다양한 스테이지에서 일 실시예의 다양한 양상의 단면도를 예증한다.
Claims (10)
- 핀 전계 효과 트랜지스터(fin field-effect transistor; FinFET) 소자를 제조하기 위한 방법에 있어서,
반도체 기판을 제공하는 단계;
더미(dummy) 핀들 및 활성 핀들을 포함하는 핀 구조를 형성하도록 상기 반도체 기판을 에칭하는 단계;
제1 그룹의 더미 핀들과 제2 그룹의 더미 핀들을 규정하도록 상기 반도체 기판상에 패터닝된 포토레지스트층 - 상기 패터닝된 포토레지스트층은 상기 제1 그룹의 더미 핀들을 노출시킴 - 을 형성하는 단계;
상기 패터닝된 포토레지스트층을 통해 상기 제1 그룹의 더미 핀들을 에칭하는 단계;
상기 제1 그룹의 더미 핀들을 에칭한 후에 상기 반도체 기판상에서 열린 공간(open-spacing) 내에 쉘로우 트렌치 분리(shallow trench isolation; STI)를 형성하는 단계를
포함하고,
상기 열린 공간은 상기 제1 그룹의 더미 핀들을 에칭함으로써 상기 활성 핀들과 상기 제2 그룹의 더미 핀들 사이에, 또는 상기 활성 핀들 사이에서 형성되는 것인, 핀 전계 효과 트랜지스터 소자를 제조하기 위한 방법. - 제1항에 있어서, 상기 활성 핀들은 상기 더미 핀들 사이에 배치되는 것인, 핀 전계 효과 트랜지스터 소자를 제조하기 위한 방법.
- 제1항에 있어서, 상기 제1 그룹의 더미 핀들은 상기 에칭 동안에 부분적으로 또는 완전히 제거되는 것인, 핀 전계 효과 트랜지스터 소자를 제조하기 위한 방법.
- 삭제
- 삭제
- 핀 전계 효과 트랜지스터(fin field-effect transistor; FinFET) 소자를 제조하기 위한 방법에 있어서,
FinFET 전구체를 수용하는 단계로서, 상기 FinFET 전구체는,
반도체 기판;
상기 반도체 기판상에 형성된 더미 핀들 및 활성 핀들;
상기 반도체 기판상에 형성되고, 상기 더미 핀들과 상기 활성 핀들 각각의 사이에 배치된 쉘로우 트렌치 분리(shallow trench isolation; STI) 영역들을 포함하는 것인, 상기 FinFET 전구체를 수용하는 단계;
제1 그룹의 더미 핀들과 제2 그룹의 더미 핀들을 규정하도록 패터닝된 포토레지스트층을 형성하는 단계; 및
상기 패터닝된 포토레지스트층을 통해 상기 제1 그룹의 더미 핀들을 에칭하는 단계를
포함하는, 핀 전계 효과 트랜지스터 소자를 제조하기 위한 방법. - 제6항에 있어서, 상기 제1 그룹의 더미 핀들을 에칭하는 단계는 제1 에칭 단계와 제2 에칭 단계를 포함하고,
상기 제1 에칭 단계는 상기 제1 그룹의 더미 핀들의 일부분 상에서 소스 구조 및 드레인 구조를 선택적으로 제거하며,
상기 제2 에칭 단계는 상기 소스 구조 및 드레인 구조의 제거에 의해 생성된 개구를 통해 상기 제1 그룹의 더미 핀들의 일부분을 리세싱(recessing)하는 단계를 포함하는 것인, 핀 전계 효과 트랜지스터 소자를 제조하기 위한 방법. - 제6항에 있어서,
상기 제1 그룹의 더미 핀들을 에칭한 후에, 상기 반도체 기판상에 층간 유전(interlayer dielectric; ILD)층을 형성하는 단계;
화학 기계적 폴리싱(chemical mechanical polishing; CMP) 공정에 의해 상기 ILD층을 평탄화하는 단계를 또한 포함하는, 핀 전계 효과 트랜지스터 소자를 제조하기 위한 방법. - 제8항에 있어서, 상기 ILD층은 상기 에칭 동안 형성된 상기 반도체 기판상의 공동(void)을 채우는 것인, 핀 전계 효과 트랜지스터 소자를 제조하기 위한 방법.
- 핀 전계 효과 트랜지스터(fin field-effect transistor; FinFET) 소자를 제조하기 위한 방법에 있어서,
반도체 기판을 제공하는 단계;
상기 반도체 기판상에 더미 핀들 및 활성 핀들 - 상기 활성 핀들은 상기 더미 핀들 사이에 배치됨 - 을 형성하는 단계;
상기 더미 핀들의 일부분을 노출하도록 상기 더미 핀들 및 상기 활성 핀들 상에 패터닝된 포토레지스트층을 형성하는 단계;
상기 활성 핀들과, 상기 패터닝된 포토레지스트층에 의해 노출되지 않은 상기 더미 핀들의 남아있는 부분 사이에 열린 공간(open-spacing)을 형성하도록 상기 더미 핀들의 노출된 부분을 에칭하는 단계; 및
상기 열린 공간을 형성한 후에 상기 열린 공간 내에 쉘로우 트렌치 분리(shallow trench isolation; STI)를 형성하는 단계를
포함하는, 핀 전계 효과 트랜지스터 소자를 제조하기 위한 방법.
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US13/490,108 US8697515B2 (en) | 2012-06-06 | 2012-06-06 | Method of making a FinFET device |
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US12033898B2 (en) | 2024-07-09 |
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