KR102741067B1 - 반도체 장치 - Google Patents
반도체 장치 Download PDFInfo
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- KR102741067B1 KR102741067B1 KR1020190122522A KR20190122522A KR102741067B1 KR 102741067 B1 KR102741067 B1 KR 102741067B1 KR 1020190122522 A KR1020190122522 A KR 1020190122522A KR 20190122522 A KR20190122522 A KR 20190122522A KR 102741067 B1 KR102741067 B1 KR 102741067B1
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Abstract
Description
도 2a 내지 도 2c는 예시적인 실시예들에 따른 반도체 장치의 개략적인 부분 확대도이다.
도 3a 내지 도 3c는 예시적인 실시예들에 따른 반도체 장치의 부분 확대도들이다.
도 4a 및 도 4b는 예시적인 실시예들에 따른 반도체 장치의 개략적인 단면도 및 부분 확대도이다.
도 5a 내지 도 5c는 예시적인 실시예들에 따른 반도체 장치의 개략적인 단면도이다.
도 6은 예시적인 실시예들에 따른 반도체 장치의 제조 방법을 나타내는 흐름도이다.
도 7a 내지 도 7l은 예시적인 실시예들에 따른 반도체 장치의 제조 방법을 설명하기 위한 개략적인 단면도들이다.
도 8은 예시적인 실시예들에 따른 반도체 장치의 개략적인 단면도이다.
104: 제2 수평 도전층 110: 분리 영역
120: 층간 절연층 130: 게이트 전극
140: 채널층 145: 게이트 유전층
150: 채널 절연층 155: 채널 패드
160: 게이트 콘택 플러그 170: 채널 콘택 플러그
180: 셀 배선 라인 190: 셀 영역 절연층
201: 베이스 기판 205: 소스/드레인 영역
220: 회로 소자 260: 제1 콘택 플러그
272: 제2 콘택 플러그 274: 제3 콘택 플러그
282: 제1 회로 배선 라인 284: 제2 회로 배선 라인
286: 제3 회로 배선 라인 290: 주변 영역 절연층
Claims (20)
- 제1 기판, 상기 제1 기판 상에 제공되는 회로 소자들, 상기 회로 소자들을 덮는 제1 절연층, 및 상기 회로 소자들의 일측에서 상기 제1 절연층의 적어도 일부를 관통하여 상기 제1 기판과 연결되도록 배치되는 콘택 플러그를 포함하는 주변 회로 영역; 및
상기 제1 기판의 상부에 배치되는 제2 기판, 상기 제2 기판 상에 서로 이격되어 수직하게 적층되는 게이트 전극들 및 상기 게이트 전극들을 관통하여 상기 제2 기판의 상면에 수직하게 연장되는 채널 구조물들을 포함하는 메모리 셀 영역을 포함하고,
상기 콘택 플러그는, 상기 제1 기판과 접하도록 배치되며 제1 두께를 갖는 금속 실리사이드층, 상기 금속 실리사이드층과 접하도록 상기 금속 실리사이드층 상에 배치되며 상기 제1 두께보다 큰 제2 두께를 갖는 제1 금속 질화물층, 상기 제1 금속 질화물층 상의 제2 금속 질화물층, 및 상기 제2 금속 질화물층 상의 도전층을 포함하고,
상기 메모리 셀 영역은, 상기 채널 구조물들을 덮는 제2 절연층, 및 상기 제2 절연층의 적어도 일부를 관통하여 상기 채널 구조물들과 연결되도록 배치되는 채널 콘택 플러그들을 더 포함하고,
상기 채널 콘택 플러그들은, 상기 채널 구조물들과 접하도록 배치되는 상부 금속 실리사이드층, 상기 상부 금속 실리사이드층과 접하도록 상기 상부 금속 실리사이드층 상에 배치되는 상부 금속 질화물층, 및 상기 상부 금속 질화물층 상의 상부 도전층을 포함하는 반도체 장치.
- 제1 항에 있어서,
상기 콘택 플러그는 상기 제1 기판을 리세스하는 콘택 홀을 채우도록 배치되며, 상기 금속 실리사이드층은 상기 콘택 홀의 하단에서 상기 콘택 홀의 바닥면 및 외측면을 둘러싸도록 배치되는 반도체 장치.
- 제1 항에 있어서,
상기 제1 두께 대 상기 제2 두께의 비율은 0.16 내지 0.80의 범위인 반도체 장치.
- 제3 항에 있어서,
상기 제2 두께는 80 Å 내지 140 Å의 범위인 반도체 장치.
- 제1 항에 있어서,
상기 금속 실리사이드층, 상기 제1 금속 질화물층, 및 상기 제2 금속 질화물층은 제1 금속을 포함하고, 상기 도전층은 상기 제1 금속과 다른 제2 금속을 포함하는 반도체 장치.
- 제1 항에 있어서,
상기 제2 금속 질화물층은 상기 제2 두께보다 작은 제3 두께를 갖는 반도체 장치.
- 삭제
- 제1 항에 있어서,
상기 상부 금속 실리사이드층은 제4 두께를 갖고, 상기 상부 금속 질화물층은 상기 제4 두께보다 작은 제5 두께를 갖는 반도체 장치.
- 제1 항에 있어서,
상기 상부 금속 질화물층은 순차적으로 적층된 제1 및 제2 층을 포함하고,
상기 상부 금속 실리사이드층은 제4 두께를 갖고, 상기 제1 층은 상기 제4 두께보다 작은 제5 두께를 갖는 반도체 장치.
- 제9 항에 있어서,
상기 제4 두께 대 상기 제5 두께의 비율은 2 내지 8의 범위인 반도체 장치.
- 제1 항에 있어서,
상기 금속 실리사이드층의 최상면은 상기 제1 기판의 상면과 공면(coplanar)을 이루는 반도체 장치.
- 제1 항에 있어서,
상기 금속 실리사이드층의 최상면은 상기 제1 절연층과 접하는 반도체 장치.
- 제1 기판, 상기 제1 기판 상에 제공되는 회로 소자들, 상기 회로 소자들을 덮는 제1 절연층, 및 상기 회로 소자들의 일측에서 상기 제1 절연층의 적어도 일부를 관통하여 상기 제1 기판과 연결되도록 배치되는 제1 콘택 플러그를 포함하는 주변 회로 영역; 및
상기 제1 기판의 상부에 배치되는 제2 기판, 상기 제2 기판 상에 제공되며 상기 회로 소자들과 전기적으로 연결되는 메모리 셀들, 상기 메모리 셀들을 덮는 제2 절연층, 및 상기 제2 절연층의 적어도 일부를 관통하여 상기 메모리 셀들과 전기적으로 연결되는 제2 콘택 플러그를 포함하는 메모리 셀 영역을 포함하고,
상기 제1 콘택 플러그는, 제1 두께를 갖는 금속 실리사이드층, 상기 금속 실리사이드층과 접하도록 상기 금속 실리사이드층 상에 배치되며 상기 제1 두께보다 큰 제2 두께를 갖는 금속 질화물층, 및 상기 금속 질화물층 상의 도전층을 포함하고,
상기 제2 콘택 플러그는 제3 두께를 갖는 상부 금속 실리사이드층, 상기 상부 금속 실리사이드층과 접하도록 상기 상부 금속 실리사이드층 상에 배치되며 상기 제3 두께보다 작은 제4 두께를 갖는 상부 금속 질화물층, 및 상기 상부 금속 질화물층 상의 상부 도전층을 포함하는 반도체 장치.
- 삭제
- 제13 항에 있어서,
상기 메모리 셀 영역은, 상기 제2 기판 상에 서로 이격되어 수직하게 적층되는 게이트 전극들 및 상기 게이트 전극들을 관통하여 상기 제2 기판의 상면에 수직하게 연장되는 채널 구조물들을 더 포함하고,
상기 제2 콘택 플러그는 상기 채널 구조물들에 연결되는 반도체 장치.
- 제13 항에 있어서,
상기 메모리 셀 영역은, 상기 제2 기판 상에 서로 이격되어 수직하게 적층되는 게이트 전극들 및 상기 게이트 전극들을 관통하여 상기 제2 기판의 상면에 수직하게 연장되는 채널 구조물들을 더 포함하고,
상기 제2 콘택 플러그는 상기 게이트 전극들에 연결되는 반도체 장치.
- 제13 항에 있어서,
상기 제1 기판은 상기 회로 소자들에 인접하게 위치하는 불순물 영역들을 포함하고,
상기 제1 콘택 플러그는 상기 불순물 영역들에 연결되는 반도체 장치.
- 제13 항에 있어서,
상기 제1 콘택 플러그는 상기 금속 실리사이드층, 상기 금속 질화물층, 및 상기 도전층을 포함하고,
상기 금속 실리사이드층은 상기 제1 기판의 상부로 연장되지 않도록 상기 제1 기판 내에 위치하는 반도체 장치.
- 삭제
- 삭제
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