KR102349069B1 - 집적된 수동 디바이스들을 위한 3d 트렌치 커패시터 - Google Patents
집적된 수동 디바이스들을 위한 3d 트렌치 커패시터 Download PDFInfo
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- KR102349069B1 KR102349069B1 KR1020200056988A KR20200056988A KR102349069B1 KR 102349069 B1 KR102349069 B1 KR 102349069B1 KR 1020200056988 A KR1020200056988 A KR 1020200056988A KR 20200056988 A KR20200056988 A KR 20200056988A KR 102349069 B1 KR102349069 B1 KR 102349069B1
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Abstract
Description
도 1은 3 차원(3D) 트렌치 커패시터가 하이브리드 접합에 의해 함께 전기적으로 결합된 트렌치 세그먼트들을 갖는 반도체 구조물의 일부 실시예들의 단면도를 도시한다.
도 2는 도 1의 기판 관통 비아(through substrate via; TSV)들을 통해 도 1의 3D 트렌치 커패시터에 전기적으로 결합된 와이어들의 일부 실시예들의 상부 레이아웃을 도시한다.
도 3은 도 1의 3D 트렌치 커패시터의 일부 실시예들의 회로도를 도시한다.
도 4a 내지 도 4e는 트렌치 세그먼트들이 변화되는 도 1의 반도체 구조물의 다양한 대안적인 실시예들의 단면도들을 도시한다.
도 5a 및 도 5b는 트렌치 세그먼트들이 도 1에서보다 많은 커패시터 전극들에 의해 정의되는 도 1의 반도체 구조물의 다양한 대안적인 실시예들의 단면도들을 도시한다.
도 6은 도 5a의 TSV들을 도 5a의 3D 트렌치 커패시터에 전기적으로 결합시키는 와이어들의 일부 실시예들의 상부 레이아웃을 도시한다.
도 7은, 트렌치 세그먼트들이 하이브리드 접합 대신 TSV들에 의해 함께 전기적으로 결합되는 도 1의 반도체 구조물의 일부 대안적인 실시예들의 단면도이다.
도 8a 내지 도 8e는 트렌치 세그먼트들이 변화되는 도 7의 반도체 구조물의 다양한 대안적인 실시예들의 단면도들을 도시한다.
도 9a 및 도 9b는, 트렌치 세그먼트들이 도 7에서보다 많은 커패시터 전극들에 의해 정의되는 도 7의 반도체 구조물의 다양한 대안적인 실시예들의 단면도들을 도시한다.
도 10a 내지 도 10c는, 3D 트렌치 커패시터가 적어도 4 개의 디바이스 층들에 걸쳐 있고 하이브리드 접합 및/또는 TSV들에 의해 함께 전기적으로 결합된 트렌치 세그먼트들을 갖는 반도체 구조물의 다양한 실시예들의 단면도들을 도시한다.
도 11은, 2D 트렌치 커패시터가 상호접속 구조물 내에서 부분적으로 깊이를 갖는 트렌치 세그먼트들을 갖는 반도체 구조물 패키지의 일부 실시예들의 단면도를 도시한다.
도 12 내지 도 20은, 3D 트렌치 커패시터가 하이브리드 접합에 의해 전기적으로 함께 결합된 트렌치 세그먼트들을 갖는 반도체 구조물을 형성하기 위한 방법의 일부 실시예들의 일련의 단면도들을 도시한다.
도 21은 도 12 내지 도 20의 방법의 일부 실시예들의 블록도를 도시한다.
도 22 내지 도 27은, 3D 트렌치 커패시터가 하이브리드 접합 대신 TSV들에 의해 전기적으로 함께 결합된 트렌치 세그먼트들을 갖는 반도체 구조물을 형성하기 위한 방법의 일부 실시예들의 일련의 단면도들을 도시한다.
도 28은 도 22 내지 도 27의 방법의 일부 실시예들의 블록도를 도시한다.
Claims (10)
- 반도체 구조물에 있어서,
제1 기판 및 제2 기판;
상기 제1 기판의 전면(front side) 및 상기 제2 기판의 전면 내로 각각 연장하는 제1 트렌치 커패시터 및 제2 트렌치 커패시터 - 상기 제1 기판의 전면과 상기 제2 기판의 전면은 서로 마주봄 - ;
상기 제1 트렌치 커패시터와 상기 제2 트렌치 커패시터 사이에 적층되고, 상기 제1 및 제2 트렌치 커패시터에 전기적으로 결합되는, 복수의 와이어들 및 복수의 비아들; 및
상기 제1 기판의 전면의 반대 편에 있는 상기 제1 기판의 후면으로부터 상기 제1 기판을 관통하여 연장하는 제1 기판 관통 비아(through substrate via; TSV)를 포함하고, 상기 제1 TSV가 상기 제1 트렌치 커패시터와 상기 제2 트렌치 커패시터를 병렬로 전기적으로 결합시키도록, 상기 와이어들 및 상기 비아들은 상기 제1 TSV를 상기 제1 및 제2 트렌치 커패시터에 전기적으로 결합시키는 것인, 반도체 구조물. - 제1항에 있어서,
상기 제1 트렌치 커패시터와 상기 제1 기판 사이의 제1 유전체층을 더 포함하고, 상기 제1 트렌치 커패시터는 상기 제1 기판의 전면 내로 상기 제1 유전체층을 완전히 관통하여 연장하는 것인, 반도체 구조물. - 제1항에 있어서, 상기 복수의 와이어들 및 상기 복수의 비아들은, 와이어들 및 비아들의 제1 교번 스택과, 와이어들 및 비아들의 제2 교번 스택으로 그룹화되고, 상기 제1 및 제2 교번 스택은 서로 이격되고 상기 제1 TSV에 의해 함께 전기적으로 결합되는 것인, 반도체 구조물.
- 제1항에 있어서, 상기 복수의 와이어들 및 상기 복수의 비아들은, 상기 제1 TSV로부터 상기 제1 트렌치 커패시터로 연장되는 제1 전도성 경로를 정의하고, 또한 상기 제1 TSV로부터 상기 제2 트렌치 커패시터로 연장되는 제2 전도성 경로를 정의하며, 상기 제1 및 제2 전도성 경로는 중첩하지 않는 것인, 반도체 구조물.
- 제1항에 있어서, 상기 복수의 와이어들 및 상기 복수의 비아들은, 와이어들 및 비아들의 제1 교번 스택과, 와이어들 및 비아들의 제2 교번 스택으로 그룹화되고, 상기 제1 및 제2 교번 스택은 하이브리드 접합 인터페이스에서 직접 접촉하고, 상기 제1 TSV는 상기 제1 기판의 후면으로부터 상기 제1 기판을 관통하여 연장하고 상기 하이브리드 접합 인터페이스와 상기 제1 기판 사이에서 종결되는 것인, 반도체 구조물.
- 제1항에 있어서, 상기 복수의 와이어들 및 상기 복수의 비아들은, 상기 제1 TSV로부터 상기 제1 트렌치 커패시터로 연장되는 제1 전도성 경로를 정의하고, 또한 상기 제1 TSV로부터 상기 제2 트렌치 커패시터로 연장되는 제2 전도성 경로를 정의하며, 상기 제1 및 제2 전도성 경로는 부분적으로 중첩하는 것인, 반도체 구조물.
- 제1항에 있어서,
상기 제1 기판의 후면으로부터 상기 제1 기판을 관통하여 연장하는 제2 TSV를 더 포함하고, 상기 와이어들 및 상기 비아들은 상기 제2 TSV를 상기 제1 및 제2 트렌치 커패시터에 전기적으로 결합시키는 것인, 반도체 구조물. - 제1항에 있어서, 상기 제1 트렌치 커패시터는,
기둥형 프로파일을 갖는 제1 전극;
상기 제1 전극의 주위를 감싸고 상기 제1 전극을 상기 제1 기판으로부터 분리시키는 커패시터 유전체층; 및
상기 커패시터 유전체층 주위를 감싸고 상기 커패시터 유전체층을 상기 제1 기판으로부터 분리시키는 제2 전극을 포함하는 것인, 반도체 구조물. - 집적 회로(IC)에 있어서,
제1 기판, 상기 제1 기판 아래에 놓이는 제1 상호접속 구조물 및 제1 트렌치 커패시터를 포함하는 제1 IC 다이 - 상기 제1 트렌치 커패시터는 상기 제1 기판 내로 연장하며 상기 제1 기판과 상기 제1 상호접속 구조물 사이에 있음 - ;
상기 제1 IC 다이 아래에 있고 상기 IC 다이에 직접 접합되는 제2 IC 다이 - 상기 제2 IC 다이는, 제2 기판, 상기 제2 기판 위에 놓이는 제2 상호접속 구조물 및 제2 트렌치 커패시터를 포함하고, 상기 제2 트렌치 커패시터는 상기 제2 기판 내로 연장하며 상기 제2 기판과 상기 제2 상호접속 구조물 사이에 있음 - ; 및
기판 관통 비아(TSV)들의 쌍이 상기 제1 트렌치 커패시터와 상기 제2 트렌치 커패시터를 병렬로 전기적으로 결합시키도록, 상기 제1 기판을 관통하여 연장하며 상기 제1 및 제2 상호접속 구조물에 의해 상기 제1 및 제2 트렌치 커패시터에 전기적으로 결합되는 상기 TSV들의 쌍을 포함하는, 집적 회로(IC). - 3차원(3D) 트렌치 커패시터를 형성하기 위한 방법에 있어서,
제1 기판의 전면 내로 연장하는 제1 트렌치 커패시터를 형성하는 단계;
상기 제1 기판의 전면 상의 상기 제1 트렌치 커패시터를 덮고 상기 제1 트렌치 커패시터에 전기적으로 결합되는 제1 상호접속 구조물을 형성하는 단계;
제2 기판의 전면 내로 연장하는 제2 트렌치 커패시터를 형성하는 단계;
상기 제2 기판의 전면 상의 상기 제2 트렌치 커패시터를 덮고 상기 제2 트렌치 커패시터에 전기적으로 결합되는 제2 상호접속 구조물을 형성하는 단계;
상기 제1 및 제2 상호접속 구조물을 접합 인터페이스에서 함께 접합시키는 단계 - 상기 제1 및 제2 상호접속 구조물은 상기 접합 인터페이스에서 서로 직접 접촉함 - ; 및
상기 제1 기판의 후면으로부터 상기 제1 기판을 관통하여 연장하는 제1 기판 관통 비아(TSV)를 형성하는 단계를 포함하고, 상기 제1 TSV가 상기 제1 트렌치 커패시터와 상기 제2 트렌치 커패시터를 병렬로 전기적으로 결합시키도록, 상기 제1 TSV는 상기 제1 및 제2 상호접속 구조물을 통해 상기 제1 및 제2 트렌치 커패시터에 전기적으로 결합되는 것인, 3차원(3D) 커패시터 형성 방법.
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