KR20150037146A - 웨이퍼 가공 방법 및 그 가공 방법을 이용한 반도체 소자 제조방법 - Google Patents
웨이퍼 가공 방법 및 그 가공 방법을 이용한 반도체 소자 제조방법 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 일 실시예에 따른 반도체 소자에 대한 단면도이다.
도 3a 내지 도 3d는 도 1a의 외부 연결 단자의 배치 과정까지를 좀더 상세히 보여주는 단면도들이다.
도 4a 및 도 4b는 본 발명의 일 실시예에 따른 디바이스 웨이퍼를 캐리어 웨이퍼에 결합시키는 모습을 보여주는 단면도들이다.
도 5a 및 도 5b는 본 발명의 일 실시예에 따른 디바이스 웨이퍼를 캐리어 웨이퍼에 결합시키는 모습을 보여주는 단면도들이다.
도 6은 본 발명의 일 실시예에 따른 디바이스 웨이퍼를 캐리어 웨이퍼에 결합시키는 모습을 보여주는 단면도이다.
도 7은 본 발명의 일 실시예에 따른 디바이스 웨이퍼를 캐리어 웨이퍼에 결합시키는 모습을 보여주는 단면도이다.
도 8a 내지 도 8d는 도 1d의 디바이스 웨이퍼의 후면을 그라인딩하는 단계를 좀더 상세히 보여주는 단면도들이다.
도 9는 본 발명의 일 실시예에 따른 디바이스 웨이퍼를 캐리어 웨이퍼로부터 분리하는 모습을 보여주는 단면도이다.
도 10 및 도 11은 본 발명의 일 실시예에 따른, 자성 물질이 배치되는 위치를 보여주는 위한 디바이스 웨이퍼에 대한 평면도들이다.
도 12는 본 발명의 일 실시예에 따른 칩 상에 자성 물질이 배치되는 위치를 보여주기 위한 칩에 대한 평면도이다.
Claims (10)
- 웨이퍼의 전면(front side) 상에 제1 자성 물질을 배치하고, 캐리어 웨이퍼 상에 제2 자성 물질을 배치하되, 상기 제1 자성 물질과 제2 자성 물질의 대향하는 면들이 서로 반대의 극성을 갖도록 상기 제1 및 제2 자성 물질을 배치하는 단계;
상기 제1 및 제2 자성 물질 사이의 자기적 인력을 이용하여 상기 웨이퍼를 상기 캐리어 웨이퍼에 정렬하여 결합시키는 단계;
상기 웨이퍼의 후면(back side)을 박막화하는 단계; 및
상기 캐리어 웨이퍼로부터 상기 웨이퍼를 분리하는 단계;를 포함하는 웨이퍼 가공 방법. - 제1 항에 있어서,
상기 웨이퍼는 관통 전극(Through Silicon Via: TSV)을 포함하고,
상기 후면을 박막화하는 단계에서 상기 웨이퍼의 후면으로 상기 TSV를 노출시키는 것을 특징으로 하는 웨이퍼 가공 방법. - 제1 항에 있어서,
상기 웨이퍼를 분리하는 단계는
상기 제1 및 제2 자성 물질의 대향하는 면들 중 어느 하나의 면에 동일한 극성의 자기장을 인가함으로써, 자기적 척력을 이용하여 분리하는 것을 특징으로 하는 웨이퍼 가공 방법. - 제1 항에 있어서,
상기 웨이퍼를 분리하는 단계는
상기 제1 및 제2 자성 물질 중 적어도 하나의 자성을 제거하는 온도 이상으로 가열하여 분리하는 것을 특징으로 하는 웨이퍼 가공 방법. - 제1 항에 있어서,
상기 제1 자성 물질은 유효 칩들이 배치되지 않은 상기 웨이퍼의 제1 부분에 배치하며,
상기 제2 자성 물질은 상기 웨이퍼의 제1 부분에 대응되는 상기 캐리어 웨이퍼의 제1 부분에 배치하는 것을 특징으로 하는 웨이퍼 가공 방법. - 제5 항에 있어서,
상기 웨이퍼의 제1 부분은 스크라이브 레인(Scribe Lane), 노치(Notch), 플랫-존(flat-zone), 및 상기 웨이퍼의 외곽 에지 중 적어도 하나의 부분이고,
상기 제1 자성 물질은 상기 웨이퍼의 제1 부분에 복수 개 배치하고,
상기 제2 자성 물질은 상기 제1 자성 물질과 대응하는 개수로 상기 캐리어 웨이퍼의 제1 부분에 배치하는 것인 것을 특징으로 하는 웨이퍼 가공 방법. - 제1 항에 있어서,
상기 제1 및 제2 자성 물질을 배치하는 단계 전에,
상기 웨이퍼에 TSV를 형성하는 단계; 및
상기 웨이퍼의 전면 상에 상기 TSV에 연결되는 외부 연결 단자를 배치하는 단계;를 포함하고,
상기 정렬하여 결합시키는 단계에서,
상기 자기적 인력과 상기 외부 연결 단자를 덮는 접착 부재를 이용하여 상기 웨이퍼를 상기 캐리어 웨이퍼에 결합시키는 것을 특징으로 하는 웨이퍼 가공 방법. - 제1 항에 있어서,
상기 제1 및 제2 자성 물질은 강자성(ferromagnetism) 물질, 상자성(paramagnetism) 물질, 및 준강자성(ferrimagnetism) 물질 중 적어도 어느 하나의 물질로 형성된 것을 특징으로 하는 웨이퍼 가공 방법. - 웨이퍼에 TSV를 형성하는 단계;
상기 웨이퍼의 전면 상에 상기 TSV에 연결되는 외부 연결 단자를 배치하는 단계;
상기 웨이퍼의 전면 상에 제1 자성 물질을 배치하고, 캐리어 웨이퍼 상에 제2 자성 물질을 배치하되, 상기 제1 자성 물질과 제2 자성 물질의 대향하는 면들이 서로 반대의 극성을 갖도록 상기 제1 및 제2 자성 물질을 배치하는 단계;
상기 외부 연결 단자를 덮는 접착 부재와 상기 제1 및 제2 자성 물질 사이의 자기적 인력을 이용하여 상기 웨이퍼를 상기 캐리어 웨이퍼에 정렬하여 결합시키는 단계;
상기 웨이퍼의 후면을 박막화하여 상기 TSV를 노출시키는 단계;
상기 웨이퍼의 후면 상에 상기 TSV에 연결되는 재배선을 형성하는 단계;
상기 캐리어 웨이퍼로부터 상기 웨이퍼를 분리하는 단계; 및
상기 웨이퍼를 다수의 반도체 소자로 분리하는 단계;를 포함하는 반도체 소자 제조 방법. - 제9 항에 있어서,
상기 제1 자성 물질은 상기 웨이퍼의 스크라이브 레인, 노치, 플랫-존, 및 상기 웨이퍼의 외곽 에지 중 적어도 하나의 부분에 배치되고,
상기 제1 자성 물질은 상기 반도체 소자로 분리하는 단계에서 제거되는 것을 특징으로 하는 반도체 소자 제조 방법.
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Application Number | Priority Date | Filing Date | Title |
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KR1020130116458A KR102136844B1 (ko) | 2013-09-30 | 2013-09-30 | 웨이퍼 가공 방법 및 그 가공 방법을 이용한 반도체 소자 제조방법 |
US14/497,382 US9070729B2 (en) | 2013-09-30 | 2014-09-26 | Wafer processing method and method of manufacturing semiconductor device by using the same |
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KR1020130116458A KR102136844B1 (ko) | 2013-09-30 | 2013-09-30 | 웨이퍼 가공 방법 및 그 가공 방법을 이용한 반도체 소자 제조방법 |
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KR20150037146A true KR20150037146A (ko) | 2015-04-08 |
KR102136844B1 KR102136844B1 (ko) | 2020-07-22 |
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