KR102089682B1 - 반도체 장치 및 이의 제조 방법 - Google Patents
반도체 장치 및 이의 제조 방법 Download PDFInfo
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- KR102089682B1 KR102089682B1 KR1020130082936A KR20130082936A KR102089682B1 KR 102089682 B1 KR102089682 B1 KR 102089682B1 KR 1020130082936 A KR1020130082936 A KR 1020130082936A KR 20130082936 A KR20130082936 A KR 20130082936A KR 102089682 B1 KR102089682 B1 KR 102089682B1
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Abstract
Description
도 2는 본 발명의 제1 실시예에 따른 반도체 장치를 설명하기 위한 단면도이다.
도 3은 본 발명의 제2 실시예에 따른 반도체 장치를 설명하기 위한 단면도이다.
도 4는 본 발명의 제3 실시예에 따른 반도체 장치를 설명하기 위한 단면도이다.
도 5는 본 발명의 제4 실시예에 따른 반도체 장치를 설명하기 위한 단면도이다.
도 6은 본 발명의 제5 및 제6 실시예에 따른 반도체 장치를 설명하기 위한 사시도이다.
도 7은 본 발명의 제5 실시예에 따른 반도체 장치를 설명하기 위한 단면도이다.
도 8은 본 발명의 제6 실시예에 따른 반도체 장치를 설명하기 위한 단면도이다.
도 9는 본 발명의 제7 실시예에 따른 반도체 장치를 설명하기 위한 사시도이다.
도 10은 본 발명의 제7 실시예에 따른 반도체 장치를 설명하기 위한 단면도이다.
도 11 및 도 12는 본 발명의 제8 실시예에 따른 반도체 장치를 설명하기 위한 회로도 및 레이아웃도이다.
도 13은 본 발명의 몇몇 실시예에 따른 반도체 장치를 포함하는 전자 시스템의 블록도이다.
도 14 및 도 15는 본 발명의 몇몇 실시예들에 따른 반도체 장치를 적용할 수 있는 예시적인 반도체 시스템이다.
도 16 내지 도 21은 본 발명의 제3 실시예에 따른 반도체 장치의 제조 방법을 설명하기 위한 중간단계 도면들이다.
도 22 내지 도 25은 본 발명의 제4 실시예에 따른 반도체 장치의 제조 방법을 설명하기 위한 중간단계 도면들이다.
도 26 내지 도 30은 본 발명의 제5 실시예에 따른 반도체 장치의 제조 방법을 설명하기 위한 중간단계 도면들이다.
40: 필드 영역 50: 게이트 구조체
60, 70: 핀형 액티브 패턴 80: 층간 절연막
85, 85a, 85b: 트렌치 110, 210: 게이트 유전막
115: 채널층 120, 220: 금속 게이트 전극
122: p형 일함수 조절막 CL: 필드 영역의 중심선
MI: 제1 금속 게이트 전극 및 제2 금속 게이트 전극의 접촉면
Claims (20)
- 제1 활성 영역과, 제2 활성 영역과, 상기 제1 활성 영역 및 상기 제2 활성 영역 사이에 직접 접촉된 필드 영역을 포함하는 기판; 및
상기 기판 상에, 상기 제1 활성 영역, 상기 제2 활성 영역 및 상기 필드 영역을 가로지르는 게이트 구조체를 포함하되,
상기 게이트 구조체는 서로 직접 접촉하는 p형 금속 게이트 전극과 n형 금속 게이트 전극을 포함하고,
상기 p형 금속 게이트 전극은 상기 제1 활성 영역 상에 형성되고, 상기 n형 금속 게이트 전극은 상기 제2 활성 영역 상에 형성되고,
상기 p형 금속 게이트 전극과 상기 n형 금속 게이트 전극의 접촉면은 상기 제2 활성 영역보다 상기 제1 활성 영역에 근접한 반도체 장치. - 제1 항에 있어서,
상기 필드 영역은 상기 제1 활성 영역 및 상기 제2 활성 영역에서 동일한 거리를 갖는 중심선을 포함하고,
상기 p형 금속 게이트 전극은 상기 중심선과 비오버랩되는 반도체 장치. - 제1 항에 있어서,
상기 p형 금속 게이트 전극은 순차적으로 형성된 p형 일함수 조절막과 제1 하부 금속 게이트 전극과 제1 상부 금속 게이트 전극을 포함하고,
상기 n형 금속 게이트는 순차적으로 형성된 제2 하부 금속 게이트 전극과 제2 상부 금속 게이트 전극을 포함하고, 상기 p형 일함수 조절막을 비포함하는 반도체 장치. - 제3 항에 있어서,
상기 접촉면은 상기 p형 일함수 조절막에 의해 정의되는 반도체 장치. - 제3 항에 있어서,
상기 제1 하부 금속 게이트 전극 및 상기 제2 하부 금속 게이트 전극은 직접 연결되고, 상기 제1 상부 금속 게이트 전극 및 상기 제2 상부 금속 게이트 전극은 직접 연결되는 반도체 장치. - 제5 항에 있어서,
상기 기판 상에, 상기 제1 활성 영역, 상기 필드 영역 및 상기 제2 활성 영역을 가로지르는 트렌치를 포함하는 층간 절연막을 더 포함하고,
상기 제1 하부 금속 게이트 전극 및 상기 제2 하부 금속 게이트 전극은 상기 트렌치의 측면 및 바닥면을 따라 형성되는 반도체 장치. - 제3 항에 있어서,
상기 p형 일함수 조절막에 의해, 상기 제1 하부 금속 게이트 전극 및 상기 제2 하부 금속 게이트 전극은 분리되는 반도체 장치. - 제1 항에 있어서,
상기 제1 활성 영역은 SRAM의 풀업 트랜지스터 형성 영역이고, 상기 제2 활성 영역은 SRAM의 풀다운 트랜지스터 형성 영역인 반도체 장치. - 제1 활성 영역과, 제2 활성 영역과, 상기 제1 활성 영역 및 상기 제2 활성 영역 사이에 직접 접촉된 필드 영역을 포함하는 기판;
상기 기판 상에, 상기 제1 활성 영역, 상기 필드 영역 및 상기 제2 활성 영역을 가로지르는 트렌치를 포함하는 층간 절연막; 및
상기 트렌치 내에, 상기 제1 활성 영역, 상기 제2 활성 영역 및 상기 필드 영역을 가로지르고, 상면이 상기 층간 절연막과 동일 평면 상에 놓이는 게이트 구조체를 포함하되,
상기 게이트 구조체는 서로 접촉하는 p형 금속 게이트 전극 및 n형 금속 게이트 전극과, p형 금속 게이트 전극 및 n형 금속 게이트 전극 사이의 접촉면을 포함하고,
상기 p형 금속 게이트 전극은 상기 제1 활성 영역 상에 형성되고, 상기 n형 금속 게이트 전극은 상기 제2 활성 영역 상에 형성되고,
상기 접촉면에서 상기 제1 활성 영역까지의 제1 폭은 상기 접촉면에서 상기 제2 활성 영역까지의 제2 폭보다 작은 반도체 장치. - 제9 항에 있어서,
상기 p형 금속 게이트 전극과 상기 n형 금속 게이트 전극은 서로 직접 접촉하는 반도체 장치. - 제9 항에 있어서,
상기 p형 금속 게이트 전극은 순차적으로 형성된 p형 일함수 조절막과 제1 하부 금속 게이트 전극과 제1 상부 금속 게이트 전극을 포함하고,
상기 n형 금속 게이트는 순차적으로 형성된 제2 하부 금속 게이트 전극과 제2 상부 금속 게이트 전극을 포함하고, 상기 p형 일함수 조절막을 비포함하는 반도체 장치. - 제11 항에 있어서,
상기 기판과 상기 p형 금속 게이트 전극 사이와, 상기 기판과 상기 n형 금속 게이트 전극 사이에 형성되는 게이트 유전막을 더 포함하고,
상기 게이트 유전막은 상기 트렌치의 바닥면을 따라 형성되고, 상기 트렌치의 측면에 비형성되는 반도체 장치. - 제11 항에 있어서,
상기 기판과 상기 p형 금속 게이트 전극 사이와, 상기 기판과 상기 n형 금속 게이트 전극 사이에 형성되는 게이트 유전막을 더 포함하고,
상기 게이트 유전막은 상기 트렌치의 측면 및 바닥면을 따라 형성되는 반도체 장치. - 제11 항에 있어서,
상기 p형 일함수 조절막은 TiN 및 TaN 중 적어도 하나를 포함하는 반도체 장치. - 제1 핀형 액티브 패턴;
상기 제1 핀형 액티브 패턴과 인접하는 제2 핀형 액티브 패턴;
상기 제1 핀형 액티브 패턴 및 상기 제2 핀형 액티브 패턴 사이에, 상기 제1 핀형 액티브 패턴 및 상기 제2 핀형 액티브 패턴의 일부와 직접 접촉하는 소자 분리막;
상기 제1 핀형 액티브 패턴, 상기 소자 분리막 및 상기 제2 핀형 액티브 패턴과 교차하는 게이트 구조체를 포함하되,
상기 게이트 구조체는 서로 직접 접촉하는 p형 금속 게이트 전극과 n형 금속 게이트 전극을 포함하고,
상기 p형 금속 게이트 전극은 상기 제1 핀형 액티브 패턴 상에 형성되고, 상기 n형 금속 게이트 전극은 상기 제2 핀형 액티브 패턴 상에 형성되고,
상기 p형 금속 게이트 전극과 상기 n형 금속 게이트 전극의 접촉면은 상기 제2 핀형 액티브 패턴보다 상기 제1 핀형 액티브 패턴에 근접한 반도체 장치. - 제15 항에 있어서,
상기 p형 금속 게이트 전극은 순차적으로 형성된 p형 일함수 조절막과 제1 하부 금속 게이트 전극과 제1 상부 금속 게이트 전극을 포함하고,
상기 n형 금속 게이트는 순차적으로 형성된 제2 하부 금속 게이트 전극과 제2 상부 금속 게이트 전극을 포함하고, 상기 p형 일함수 조절막을 비포함하고,
상기 접촉면은 상기 p형 일함수 조절막에 의해 정의되는 반도체 장치. - 제16 항에 있어서,
상기 제1 하부 금속 게이트 전극 및 상기 제2 하부 금속 게이트 전극은 직접 연결되고, 상기 제1 상부 금속 게이트 전극 및 상기 제2 상부 금속 게이트 전극은 직접 연결되는 반도체 장치. - 제16 항에 있어서,
상기 제1 하부 금속 게이트 전극 및 상기 제2 하부 금속 게이트 전극은 상기 p형 일함수 조절막에 의해 분리되는 반도체 장치. - 제15 항에 있어서,
상기 제1 핀형 액티브 패턴은 실리콘 원소 반도체이고,
상기 제1 핀형 액티브 패턴과 상기 p형 금속 게이트 전극 사이에 실리콘 게르마늄 채널층을 더 포함하고,
상기 실리콘 게르마늄 채널층은 상기 제1 핀형 액티브 패턴의 적어도 일부를 따라 형성되는 반도체 장치. - 제1 활성 영역과, 제2 활성 영역과, 상기 제1 활성 영역 및 상기 제2 활성 영역 사이에 직접 접촉된 필드 영역을 포함하는 기판을 제공하되, 상기 필드 영역은 상기 제1 활성 영역 및 상기 제2 활성 영역에서 동일한 거리를 갖는 중심선을 포함하고,
상기 기판 상에, 상기 제1 활성 영역, 상기 제2 활성 영역 및 상기 필드 영역을 가로지르고, 서로 직접 접촉하는 p형 금속 게이트 전극과 n형 금속 게이트 전극을 포함하는 게이트 구조체를 형성하는 것을 포함하되, p형 금속 게이트 전극은 상기 중심선과 비오버랩되는 반도체 장치 제조 방법.
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