KR102379165B1 - Tsv 구조를 구비한 집적회로 소자 및 그 제조 방법 - Google Patents
Tsv 구조를 구비한 집적회로 소자 및 그 제조 방법 Download PDFInfo
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- KR102379165B1 KR102379165B1 KR1020150115413A KR20150115413A KR102379165B1 KR 102379165 B1 KR102379165 B1 KR 102379165B1 KR 1020150115413 A KR1020150115413 A KR 1020150115413A KR 20150115413 A KR20150115413 A KR 20150115413A KR 102379165 B1 KR102379165 B1 KR 102379165B1
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- tsv
- interlayer insulating
- insulating layer
- substrate
- hole
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Abstract
Description
도 2는 본 발명의 기술적 사상에 의한 다른 실시예들에 따른 집적회로 소자를 설명하기 위한 단면도이다.
도 3a 내지 도 3c는 본 발명의 기술적 사상에 의한 또 다른 실시예들에 따른 집적회로 소자들을 설명하기 위한 단면도들이다.
도 4는 본 발명의 기술적 사상에 의한 다른 실시예들에 따른 집적회로 소자를 설명하기 위한 단면도이다.
도 5는 본 발명의 기술적 사상에 의한 또 다른 실시예들에 따른 집적회로 소자를 설명하기 위한 단면도이다.
도 6a 내지 도 6o는 본 발명의 기술적 사상에 의한 실시예들에 따른 집적회로 소자의 제조 방법을 설명하기 위하여 공정 순서에 따라 도시한 단면도들이다.
도 7은 본 발명의 기술적 사상에 의한 실시예들에 따른 반도체 패키지의 개략적인 구성을 보여주는 단면도이다.
도 8은 본 발명의 기술적 사상에 의한 실시예들에 따른 반도체 패키지의 요부 구성을 보여주는 단면도이다.
도 9는 본 발명의 기술적 사상에 의한 실시예들에 따른 반도체 패키지의 단면도이다.
도 10은 본 발명의 기술적 사상에 의한 실시예들에 따른 반도체 패키지의 단면도이다.
도 11은 본 발명의 기술적 사상에 의한 실시예들에 따른 반도체 패키지의 단면도이다.
도 12는 본 발명의 기술적 사상에 의한 실시예들에 따른 집적회로 소자의 요부 구성을 보여주는 평면도이다.
도 13은 본 발명의 기술적 사상에 의한 실시예들에 따른 집적회로 소자의 요부 구성을 보여주는 다이어그램이다.
Claims (20)
- TSV (through-silicon-via) 공간의 일부인 제1 관통홀을 한정하는 제1 측벽을 가지는 기판과,
상기 TSV 공간의 다른 일부를 제공하고 상기 제1 관통홀과 연통되는 제2 관통홀을 한정하는 경사 측벽부를 가지는 제2 측벽과, 상기 제1 관통홀에 언더컷 영역을 제공하도록 상기 TSV 공간의 내측을 향해 돌출된 돌출부를 가지는 층간절연막과,
상기 기판 및 상기 층간절연막을 관통하여 상기 제1 관통홀 및 상기 제2 관통홀 내에서 연장된 TSV 구조와,
상기 제1 관통홀 및 상기 제2 관통홀 내에서 상기 TSV 구조를 포위하는 비아 절연막을 포함하고,
상기 비아 절연막은 상기 경사 측벽부에 접하는 경사 표면과, 상기 기판과 상기 층간절연막과의 경계부에 대면하고 상기 경사 표면의 일단에서 상기 TSV 구조로부터 멀어지도록 상기 TSV 구조의 외측 방향으로 돌출되어 있는 돌출 영역을 포함하는 것을 특징으로 하는 집적회로 소자. - 삭제
- 제1항에 있어서,
상기 제2 관통홀의 적어도 일부는 상기 기판으로부터 멀어짐에 따라 점차 폭이 커지는 형상을 가지는 것을 특징으로 하는 집적회로 소자. - 제1항에 있어서,
상기 제2 측벽은 경사 측벽부를 가지고,
상기 돌출부에서 상기 층간절연막의 저면과 상기 경사 측벽부가 이루는 사잇각(θ)은 75 ∼ 85 도인 것을 특징으로 하는 집적회로 소자. - 삭제
- 제1항에 있어서,
상기 층간절연막은 복수의 절연막이 적층된 다중층 구조를 포함하고,
상기 제2 측벽은 요철 형상을 가지는 제1 표면부를 포함하는 것을 특징으로 하는 집적회로 소자. - 제6항에 있어서,
상기 비아 절연막은 상기 제1 표면부에 접하고 상기 제1 표면부의 요철 형상에 상응하는 요철 형상을 가지는 제2 표면부를 포함하는 것을 특징으로 하는 집적회로 소자. - 제1항에 있어서,
상기 TSV 구조는
상기 기판 및 상기 층간절연막을 관통하는 도전성 플러그와,
상기 제1 관통홀 및 상기 제2 관통홀 내에서 상기 도전성 플러그를 포위하는 도전성 배리어막을 포함하고,
상기 도전성 플러그 및 상기 도전성 배리어막은 각각 상기 돌출부에 대면하는 부분에 위치되고 상기 TSV 공간의 중심부를 향하여 리세스되어 있는 오목부를 포함하는 것을 특징으로 하는 집적회로 소자. - 제1항에 있어서,
상기 기판 상에 형성된 FEOL (front-end-of-line) 구조와,
상기 FEOL 구조 위에 형성된 BEOL (back-end-of-line) 구조를 더 포함하고,
상기 층간절연막은 상기 FEOL 구조의 일부이고, 상기 BEOL 구조는 상기 TSV 구조 및 상기 층간절연막을 덮도록 형성된 것을 특징으로 하는 집적회로 소자. - 기판과, 상기 기판 상에 형성되고 경사 측벽부를 가지는 층간절연막을 포함하는 반도체 구조물과,
상기 기판 및 상기 층간절연막을 관통하는 TSV 구조와,
상기 기판 및 상기 층간절연막을 관통하여 상기 TSV 구조를 포위하는 비아 절연막을 포함하고,
상기 비아 절연막은 상기 경사 측벽부에 접하는 경사 표면과, 상기 기판과 상기 층간절연막과의 경계부에 대면하고 상기 경사 표면의 일단에서 상기 TSV 구조로부터 멀어지도록 상기 TSV 구조의 외측 방향으로 돌출되어 있는 돌출 영역을 포함하는 것을 특징으로 하는 집적회로 소자. - 제10항에 있어서,
상기 층간절연막의 저면과 상기 경사 측벽부가 이루는 사잇각(θ)은 75 ∼ 85 도인 것을 특징으로 하는 집적회로 소자. - 제10항에 있어서,
상기 층간절연막은 상기 TSV 구조의 내부를 향해 돌출된 돌출부를 포함하고,
상기 비아 절연막의 상기 돌출 영역은 상기 돌출부에 접해 있는 것을 특징으로 하는 집적회로 소자. - 기판상에 층간절연막을 형성하는 단계와,
상기 층간절연막 및 상기 기판을 식각하여, 상기 기판 내에는 TSV (through-silicon-via) 공간의 일부를 제공하고 상기 기판의 제1 측벽에 의해 한정되는 제1 관통홀을 형성하고, 상기 층간절연막 내에는 상기 TSV 공간의 다른 일부를 제공하고 상기 층간절연막의 경사 측벽부를 가지는 제2 측벽에 의해 한정되는 제2 관통홀을 형성하는 단계와,
상기 제1 측벽 및 상기 제2 측벽의 상기 경사 측벽부에 접하는 비아 절연막을 상기 제1 관통홀 및 상기 제2 관통홀 내에 형성하는 단계와,
상기 제1 관통홀 및 상기 제2 관통홀 내에서 상기 비아 절연막 내에 TSV 구조를 형성하는 단계를 포함하고,
상기 제1 관통홀 및 상기 제2 관통홀을 형성하는 단계는 상기 제1 관통홀 및 상기 제2 관통홀을 형성하는 동안 상기 층간절연막에 상기 TSV 공간의 내부를 향해 돌출되는 돌출부와, 상기 돌출부의 하부에서 상기 제1 관통홀 내에 언더컷 영역을 형성하는 단계를 포함하고,
상기 비아 절연막을 상기 제1 관통홀 및 상기 제2 관통홀 내에 형성하는 단계에서, 상기 비아 절연막은 상기 경사 측벽부에 접하는 경사 표면과, 상기 기판과 상기 층간절연막과의 경계부에 대면하고 상기 경사 표면의 일단에서 상기 TSV 공간으로부터 멀어지도록 상기 TSV 공간의 외측 방향으로 돌출되어 있는 돌출 영역을 포함하도록 형성되는 것을 특징으로 하는 집적회로 소자의 제조 방법. - 삭제
- 제13항에 있어서,
상기 층간절연막의 상기 돌출부는 상기 층간절연막의 저면과 상기 경사 측벽부가 이루는 사잇각(θ)이 75 ∼ 85 도로 되도록 형성되는 것을 특징으로 하는 집적회로 소자의 제조 방법. - 삭제
- TSV (through-silicon-via) 공간의 일부를 한정하는 제1 측벽을 가지는 기판과, 상기 TSV 공간의 다른 일부를 한정하는 경사 측벽부를 가지는 제2 측벽과 상기 TSV 공간에 언더컷 영역을 제공하도록 상기 TSV 공간의 내측을 향해 돌출된 돌출부를 가지는 층간절연막을 형성하는 단계와,
상기 기판 및 상기 층간절연막을 관통하고, 상기 경사 측벽부에 접하는 경사 표면과, 상기 기판과 상기 층간절연막과의 경계부에 대면하고 상기 언더컷 영역에서 상기 층간절연막의 저면에 접하고 상기 TSV 공간으로부터 멀어지도록 상기 TSV 공간의 외측 방향으로 돌출되어 있는 돌출 영역을 포함하는 비아 절연막을 형성하는 단계와,
상기 비아 절연막 위에 상기 기판 및 상기 층간절연막을 관통하는 TSV 구조를 형성하는 단계를 포함하는 것을 특징으로 하는 집적회로 소자의 제조 방법. - 제17항에 있어서,
상기 경사 측벽부는 상기 돌출부에서 상기 층간절연막의 저면과 상기 경사 측벽부가 이루는 사잇각(θ)이 75 ∼ 85 도로 되도록 형성되는 것을 특징으로 하는 집적회로 소자의 제조 방법. - 제17항에 있어서,
상기 층간절연막의 상기 제2 측벽에 요철 형상을 가지는 표면부를 형성하는 단계를 더 포함하는 것을 특징으로 하는 집적회로 소자의 제조 방법. - 제17항에 있어서,
상기 비아 절연막을 형성하는 단계는
상기 언더컷 영역 내에서 상기 제1 측벽을 덮는 상기 비아 절연막의 제1 부분을 형성하는 단계와,
상기 제2 측벽 위에서 상기 돌출부를 덮는 상기 비아 절연막의 제2 부분을 형성하는 단계를 포함하고,
상기 비아 절연막의 제2 부분을 형성하는 단계에서 상기 제2 부분의 수평 방향의 폭이 상기 제1 부분의 수평 방향의 폭보다 더 작게 되도록 상기 제2 부분을 형성하는 것을 특징으로 하는 집적회로 소자의 제조 방법.
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