KR100784498B1 - 적층 칩과, 그의 제조 방법 및 그를 갖는 반도체 패키지 - Google Patents
적층 칩과, 그의 제조 방법 및 그를 갖는 반도체 패키지 Download PDFInfo
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- KR100784498B1 KR100784498B1 KR20060048876A KR20060048876A KR100784498B1 KR 100784498 B1 KR100784498 B1 KR 100784498B1 KR 20060048876 A KR20060048876 A KR 20060048876A KR 20060048876 A KR20060048876 A KR 20060048876A KR 100784498 B1 KR100784498 B1 KR 100784498B1
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- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76898—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics formed through a semiconductor substrate
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Abstract
Description
Claims (23)
- 두 개의 반도체 칩이 적층된 적층 칩으로,상기 반도체 칩은,활성면과, 상기 활성면에 반대되는 배면을 갖는 실리콘 기판과;상기 활성면의 중심 부분에 형성된 복수개의 접속 패드;를 포함하며,상기 두 개의 반도체 칩은 상기 활성면이 서로 마주보게 적층되며, 상기 두 개의 반도체 칩의 마주보는 상기 접속 패드는 전기적 연결 수단을 매개로 서로 전기적으로 연결되며, 적어도 하나의 반도체 칩에 상기 접속 패드와 연결되어 배면으로 접속단이 노출되는 제 1 관통 전극이 형성된 것을 특징으로 하는 적층 칩.
- 제 1항에 있어서, 상기 접속 패드는 상기 활성면의 중심 부분에 일렬로 형성된 것을 특징으로 하는 적층 칩.
- 제 2항에 있어서, 상기 반도체 칩은,제 1 칩과;상기 제 1 칩의 활성면에 적층된 제 2 칩;을 포함하며,상기 제 1 관통 전극은 상기 제 1 칩의 접속 패드에 연결된 것을 특징으로 하는 적층 칩.
- 제 3항에 있어서, 상기 접속 패드는 칩 패드인 것을 특징으로 하는 적층 칩.
- 제 3항에 있어서, 상기 반도체 칩은 활성면에 형성된 칩 패드를 포함하며,상기 접속 패드는 상기 칩 패드와 연결되어 재배선되어 형성된 재배선 패드를 포함하는 것을 특징으로 하는 적층 칩.
- 제 4항 또는 제 5항에 있어서, 상기 제 1 관통 전극은 상기 제 1 칩의 접속 패드를 관통하여 형성된 것을 특징으로 하는 적층 칩.
- 제 3항에 있어서, 상기 전기적 연결 수단은 금속 범프인 것을 특징으로 하는 적층 칩
- 제 7항에 있어서, 상기 제 1 칩과 제 2 칩의 사이에 개재된 접착층;을 더 포함하는 것을 특징으로 하는 적층 칩.
- 제 8항에 있어서, 상기 제 1 칩과 제 2 칩의 사이의 가장자리 둘레에 배치된 복수개의 스페이서;를 더 포함하는 것을 특징으로 하는 적층 칩.
- 제 9항에 있어서, 상기 스페이서들 중에서 적어도 하나 이상은 상기 제 1 칩과 제 2 칩의 접지 또는 전원 배선을 서로 연결하는 것을 특징으로 하는 적층 칩.
- 제 1항에 있어서, 상기 제 1 관통 전극의 접속단과 연결되며, 상기 접속단이 노출된 상기 배면에 재배선되어 형성된 복수개의 볼 패드;를 더 포함하는 것을 특징으로 하는 적층 칩.
- 제 5항에 있어서,상기 제 2 칩의 접속 패드에 연결되지 않은 상기 제 2 칩의 칩 패드와 연결되어 상기 제 2 칩의 활성면의 가장자리 부분으로 재배선되어 형성된 제 2 연결 패드와;상기 제 2 연결 패드에 대응되는 상기 제 1 칩의 활성면에 형성된 제 1 연결 패드와;상기 제 1 연결 패드와 상기 제 2 연결 패드를 전기적으로 연결하는 연결 범프; 및상기 제 1 연결 패드와 연결되어 상기 제 1 칩의 활성면의 가장자리 부분을 관통하여 배면으로 접속단이 노출된 제 2 관통 전극;을 더 포함하는 것을 특징으로 하는 적층 칩.
- 제 5항에 있어서,상기 제 1 칩의 칩 패드와 연결되지 않은 상기 제 1 칩의 접속 패드와 연결되어 상기 제 1 칩의 활성면의 가장자리 부분으로 재배선되어 형성된 제 1 연결 패드와;상기 제 1 연결 패드와 연결되어 상기 제 1 칩의 활성면의 가장자리 부분을 관통하여 배면으로 접속단이 노출된 제 2 관통 전극;을 더 포함하는 것을 특징으로 하는 적층 칩.
- 활성면과, 상기 활성면에 반대되는 배면을 가지며, 상기 활성면의 중심 부분에 제 1 접속 패드들이 일렬로 형성되며, 상기 제 1 접속 패드들에 연결되게 제 1 관통 전극이 형성된 제 1 칩과;활성면이 상기 제 1 칩의 활성면과 마주보게 배치되며, 상기 활성면의 중심 부분에 상기 제 1 접속 패드들에 대응되게 제 2 접속 패드들이 형성된 제 2 칩과;상기 제 1 접속 패드와 제 2 접속 패드를 전기적으로 연결하는 금속 범프; 및상기 제 1 칩과 제 2 칩 사이에 개재된 접착층;을 포함하는 것을 특징으로 하는 적층 칩.
- 제 1항에 따른 적층 칩과;상부면과 하부면을 가지며, 상기 적층 칩의 제 1 관통 전극의 접속단이 상기 상부면을 향하도록 실장되며, 상기 제 1 관통 전극의 접속단이 전기적으로 연결되는 배선기판과;상기 적층 칩이 실장된 상기 배선기판의 영역을 봉합하는 수지 봉합부; 및상기 배선기판의 하부면에 형성되며, 상기 제 1 관통 전극의 접속단과 전기 적으로 연결되는 외부접속단자;를 포함하는 것을 특징으로 반도체 패키지.
- 제 15항에 있어서, 상기 제 1 관통 전극의 접속단과 상기 배선기판 사이에 개재된 접속 범프;를 더 포함하는 것을 특징으로 하는 반도체 패키지.
- 제 15항에 있어서, 상기 배선기판은 상기 제 1 관통 전극의 접속단이 노출되는 창이 형성되어 있으며,상기 창을 통하여 배선기판과 상기 제 1 관통 전극의 접속단을 연결하는 본딩 와이어;를 포함하는 것을 특징으로 하는 반도체 패키지.
- 제 17항에 있어서, 상기 수지 봉합부는,상기 배선기판의 상부면에 실장된 상기 적층 칩을 봉합하는 제 1 수지 봉합부와;상기 배선기판의 하부면의 상기 창을 봉합하여 형성된 제 2 수지 봉합부;를 포함하는 것을 특징으로 하는 반도체 패키지.
- 제 11항에 따른 적층 칩과;상기 볼 패드에 형성된 솔더 볼;을 포함하는 것을 특징으로 하는 반도체 패키지.
- (a) 활성면의 중심 부분에 복수개의 제 1 접속 패드들이 형성되며, 상기 제 1 접속 패드들에 연결되게 일정 깊이로 제 1 관통 전극이 형성된 제 1 칩들을 포함하는 제 1 웨이퍼와,활성면의 중심 부분에 상기 제 1 접속 패드들에 대응되게 제 2 접속 패드들이 형성된 제 2 칩을 포함하는 제 2 웨이퍼를 준비하는 단계와;(b) 상기 제 1 및 제 2 웨이퍼의 활성면이 마주보게 적층하되, 상기 제 1 접속 패드와 상기 제 2 접속 패드가 전기적으로 연결되게 적층하는 단계와;(c) 상기 제 1 관통 전극의 접속단이 노출되게 상기 제 1 웨이퍼의 배면을 연마하는 단계와;(d) 상기 적층된 제 1 및 제 2 웨이퍼를 개별 적층 칩으로 분리하는 단계;를 포함하는 것을 특징으로 하는 적층 칩 제조 방법.
- (a) 활성면의 중심 부분에 복수개의 제 1 접속 패드들이 형성된 제 1 칩을 포함하는 제 1 웨이퍼와,활성면의 중심 부분에 상기 제 1 접속 패드들에 대응되게 제 2 접속 패드들이 형성된 제 2 칩을 포함하는 제 2 웨이퍼를 준비하는 단계와;(b) 상기 제 1 및 제 2 웨이퍼의 활성면이 마주보게 적층하되, 상기 제 1 접속 패드와 상기 제 2 접속 패드가 전기적으로 연결되게 적층하는 단계와;(c) 상기 제 1 웨이퍼의 배면을 통하여 상기 제 1 접속 패드에 연결되게 제 1 관통 전극을 형성하는 단계와;(d) 상기 적층된 제 1 및 제 2 웨이퍼를 개별 적층 칩으로 분리하는 단계;를 포함하는 것을 특징으로 하는 적층 칩 제조 방법.
- 제 20항 또는 제 21항에 있어서, 상기 (b) 단계와 상기 (d) 단계 사이에 상기 제 2 웨이퍼의 배면을 연마하는 단계;를 더 포함하는 것을 특징으로 하는 적층 칩 제조 방법.
- 제 21항에 있어서, 상기 (c) 단계는 상기 제 1 웨이퍼의 배면을 연마한 이후에 진행되는 것을 특징으로 하는 적층 칩 제조 방법.
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US11/710,490 US20070278657A1 (en) | 2006-05-30 | 2007-02-26 | Chip stack, method of fabrication thereof, and semiconductor package having the same |
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