KR102702995B1 - 이종의 메모리 소자들을 포함하는 집적회로 소자 및 그 제조 방법 - Google Patents
이종의 메모리 소자들을 포함하는 집적회로 소자 및 그 제조 방법 Download PDFInfo
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- KR102702995B1 KR102702995B1 KR1020160162915A KR20160162915A KR102702995B1 KR 102702995 B1 KR102702995 B1 KR 102702995B1 KR 1020160162915 A KR1020160162915 A KR 1020160162915A KR 20160162915 A KR20160162915 A KR 20160162915A KR 102702995 B1 KR102702995 B1 KR 102702995B1
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Abstract
Description
도 2는 본 발명의 기술적 사상에 의한 실시예들에 따른 집적회로 소자의 제1 메모리 소자의 예시적인 구성을 설명하기 위한 블록도이다.
도 3 내지 도 8은 각각 본 발명의 기술적 사상에 의한 실시예들에 따른 집적회로 소자의 메모리 셀 어레이를 구성할 수 있는 예시적인 단위 메모리 셀의 등가 회로도이다.
도 9는 본 발명의 기술적 사상에 의한 실시예들에 따른 집적회로 소자를 설명하기 위한 단면도이다.
도 10은 본 발명의 기술적 사상에 의한 실시예들에 따른 집적회로 소자를 구성하는 가변 저항 구조체의 예시적인 구조를 설명하기 위한 단면도이다.
도 11은 본 발명의 기술적 사상에 의한 다른 실시예들에 따른 집적회로 소자를 설명하기 위한 단면도이다.
도 12는 본 발명의 기술적 사상에 의한 또 다른 실시예들에 따른 집적회로 소자를 설명하기 위한 단면도이다.
도 13은 본 발명의 기술적 사상에 의한 또 다른 실시예들에 따른 집적회로 소자를 설명하기 위한 단면도이다.
도 14a 내지 도 14c는 본 발명의 기술적 사상에 의한 실시예들에 따른 집적회로 소자의 제조 방법을 설명하기 위하여 공정 순서에 따라 도시한 단면도들이다.
Claims (20)
- 싱글 칩을 구성하는 하나의 기판과,
상기 기판 상의 서로 이격된 영역에 배치되고 서로 다른 구조를 가지는 복수의 메모리 셀을 포함하고,
상기 복수의 메모리 셀은 커패시터 및 제1 트랜지스터를 포함하는 제1 메모리 셀과, 가변 저항 구조체 및 제2 트랜지스터를 포함하는 제2 메모리 셀을 포함하고,
상기 제1 트랜지스터는 제1 도핑 농도를 가지는 제1 소스/드레인 영역을 포함하고, 상기 제2 트랜지스터는 상기 제1 도핑 농도보다 더 큰 제2 도핑 농도를 가지는 제2 소스/드레인 영역을 포함하는 집적회로 소자. - 제1항에 있어서,
상기 복수의 메모리 셀은 DRAM (dynamic random access memory)의 메모리 셀, MRAM (magnetic RAM) 메모리 셀, SRAM (static RAM) 메모리 셀, PRAM (phase change RAM) 메모리 셀, RRAM (resistance RAM) 메모리 셀, 및 FRAM (ferroelectric RAM) 중에서 선택되는 서로 다른 2 종류의 메모리 셀을 포함하는 집적회로 소자. - 제1항에 있어서,
상기 복수의 메모리 셀은 DRAM 메모리 셀 및 MRAM 메모리 셀을 포함하는 집적회로 소자. - 삭제
- 제1항에 있어서,
상기 기판은 소자분리막을 사이에 두고 서로 이격된 적어도 하나의 제1 활성 영역 및 적어도 하나의 제2 활성 영역을 포함하고,
상기 제1 메모리 셀은 상기 적어도 하나의 제1 활성 영역 상에 형성되고,
상기 제2 메모리 셀은 상기 적어도 하나의 제2 활성 영역 상에 형성된 집적회로 소자. - 제1항에 있어서,
상기 제1 트랜지스터 및 상기 제2 트랜지스터는 각각 상기 기판 내에 매립되어 있는 집적회로 소자. - 삭제
- 제1항에 있어서,
상기 커패시터는 상기 기판으로부터 제1 거리만큼 이격된 위치에 배치되고,
상기 가변 저항 구조체는 상기 기판으로부터 상기 제1 거리와 다른 제2 거리만큼 이격된 위치에 배치된 집적회로 소자. - 제8항에 있어서,
상기 제1 거리는 상기 제2 거리보다 더 작은 집적회로 소자. - 제1항에 있어서,
상기 커패시터는 상기 기판으로부터 제3 거리만큼 이격된 최상면을 가지고,
상기 가변 저항 구조체는 상기 기판으로부터 상기 제3 거리보다 더 큰 제4 거리만큼 이격된 위치에 배치된 집적회로 소자. - 기판의 제1 영역 상에 배치되고 제1 타입의 제1 메모리 셀을 포함하는 제1 메모리 셀 어레이 영역을 가지는 제1 메모리 소자와,
상기 기판의 상기 제1 영역으로부터 이격된 제2 영역 상에 배치되고 상기 제1 타입과 다른 제2 타입의 제2 메모리 셀을 포함하는 제2 메모리 셀 어레이 영역을 가지는 제2 메모리 소자와,
상기 기판의 상기 제1 영역 및 상기 제2 영역으로부터 이격된 제3 영역 상에 배치되고 상기 제1 메모리 셀 어레이 영역과 상기 제2 메모리 셀 어레이 영역과의 사이의 전기적 연결이 가능하도록 구성된 복수의 도전 라인을 포함하는 인터페이스 영역을 포함하고,
상기 제1 메모리 셀은 제1 도핑 농도를 가지는 제1 소스/드레인 영역을 포함하는 제1 트랜지스터를 구비하고,
상기 제2 메모리 셀은 상기 제1 도핑 농도보다 더 큰 제2 도핑 농도를 가지는 제2 소스/드레인 영역을 포함하는 제2 트랜지스터를 구비하는 집적회로 소자. - 제11항에 있어서,
상기 제1 메모리 소자는 트랜지스터 및 커패시터를 가지는 단위 메모리 셀을 포함하고, 상기 제2 메모리 소자는 스위칭 소자 및 가변 저항을 가지는 단위 메모리 셀을 포함하는 집적회로 소자. - 삭제
- 제11항에 있어서,
상기 제1 메모리 셀은 상기 기판으로부터 제1 거리만큼 이격된 위치에 배치된 커패시터를 포함하고,
상기 제2 메모리 셀은 상기 기판으로부터 상기 제1 거리와 다른 제2 거리만큼 이격된 위치에 배치된 가변 저항 구조체를 포함하는 집적회로 소자. - 제11항에 있어서,
상기 제1 메모리 셀은 상기 기판 상에 형성된 커패시터와, 상기 커패시터를 덮는 제1 다층 배선 구조를 포함하고, 상기 제2 메모리 셀은 상기 기판 상에서 상기 제1 다층 배선 구조와 동일 레벨에 형성되고 가변 저항 구조체를 포함하는 제2 다층 배선 구조를 포함하는 집적회로 소자. - 기판 상의 서로 이격된 영역에 배치되고 서로 다른 구조를 가지는 복수의 메모리 셀을 포함하고, 상기 복수의 메모리 셀은 상기 기판의 제1 영역에 배치되고 제1 트랜지스터를 구비하는 제1 메모리 셀과, 상기 기판의 제2 영역에 배치되고 제2 트랜지스터를 구비하는 제2 메모리 셀을 포함하는 집적회로 소자의 제조 방법으로서,
상기 집적회로 소자의 제조 방법은
상기 제1 영역에서 상기 기판 내에 배치되는 복수의 제1 워드 라인과, 상기 제2 영역에서 상기 기판 내에 또는 상기 기판 상에 배치되는 복수의 제2 워드 라인을 형성하는 단계와,
상기 제1 영역에서 상기 복수의 제1 워드 라인 상에 복수의 커패시터를 형성하는 단계와,
상기 제2 영역에서 상기 복수의 제2 워드 라인 위에 복수의 소스 라인을 형성하는 단계와,
상기 제1 영역 및 상기 제2 영역에서 상기 복수의 커패시터 및 상기 복수의 소스 라인을 덮는 절연막을 형성하는 단계와,
상기 제2 영역에서 상기 기판의 상면으로부터 제1 수직 거리만큼 이격된 위치에 배치되는 가변 저항 구조체를 형성하는 단계를 포함하고,
상기 제1 트랜지스터는 제1 도핑 농도를 가지는 제1 소스/드레인 영역을 포함하고, 상기 제2 트랜지스터는 상기 제1 도핑 농도보다 더 큰 제2 도핑 농도를 가지는 제2 소스/드레인 영역을 포함하는 집적회로 소자의 제조 방법. - 제16항에 있어서,
상기 복수의 제1 워드 라인과 상기 복수의 제2 워드 라인은 동시에 형성되는 집적회로 소자의 제조 방법. - 제16항에 있어서,
상기 제1 영역에서 상기 절연막 위에 배치되는 제1 다층 배선 구조를 형성하는 단계와, 상기 제2 영역에서 상기 절연막 위에 배치되는 제2 다층 배선 구조를 형성하는 단계를 더 포함하고, 상기 제1 다층 배선 구조 중 적어도 일부와 상기 제2 다층 배선 구조 중 적어도 일부는 동시에 형성되는 집적회로 소자의 제조 방법. - 제18항에 있어서,
상기 가변 저항 구조체를 형성하는 단계는 상기 제1 다층 배선 구조를 형성하는 단계 및 상기 제2 다층 배선 구조를 형성하는 단계보다 먼저 수행되는 집적회로 소자의 제조 방법. - 제18항에 있어서,
상기 가변 저항 구조체를 형성하는 단계는 상기 제2 다층 배선 구조를 형성하는 동안 수행되는 집적회로 소자의 제조 방법.
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CN108133936A (zh) | 2018-06-08 |
US10468103B2 (en) | 2019-11-05 |
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