KR20210009762A - 팬-아웃 웨이퍼 레벨 패키지 제조 방법 - Google Patents
팬-아웃 웨이퍼 레벨 패키지 제조 방법 Download PDFInfo
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- KR20210009762A KR20210009762A KR1020190086739A KR20190086739A KR20210009762A KR 20210009762 A KR20210009762 A KR 20210009762A KR 1020190086739 A KR1020190086739 A KR 1020190086739A KR 20190086739 A KR20190086739 A KR 20190086739A KR 20210009762 A KR20210009762 A KR 20210009762A
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Abstract
Description
도 1, 도 3, 도 7, 도 9, 도 11 및 도 17은 팬-아웃 웨이퍼 레벨 패키지의 제조 방법에 따른 중간 단계들의 모습을 개략적으로 도시한 사시도들이다.
도 2는 도 1의 Ⅰ-Ⅰ'에 대한 단면도이다.
도 4는 도 3의 Ⅰ-Ⅰ'에 대한 단면도이다.
도 8은 도 7의 Ⅰ-Ⅰ'에 대한 단면도이다.
도 10은 도 9의 Ⅰ-Ⅰ'에 대한 단면도이다.
도 12는 도 11의 Ⅰ-Ⅰ'에 대한 단면도이다.
도 13 내지 15는 도 12의 실시예들에 따른 P 영역을 확대 도시한 단면도들이다.
도 18은 도 17의 Ⅱ-Ⅱ'대한 단면도이다.
도 20은 본 개시의 일 실시예에 따른 팬 아웃 웨이퍼 레벨 패키지 제조 방법을 설명하기 위한 단면도이다.
20: 희생층 20a: 제2 계단면
21: 제1 희생층, 릴리즈층
23: 제2 희생층, 배리어층
30: 절연층 50: 재배선층
31: 제1 절연층 33: 제2 절연층
35: 제3 절연층 37: 제4 절연층
40: 도전층 41: 하부 패드
43: 상부 패드 45: 배선층
47: 비아 60: 반도체 칩
65: 칩 패드 70: 범프
80: 몰드층 90: 솔더 볼
Claims (10)
- 캐리어 기판을 제공하는 것;
상기 캐리어 기판 상에 제1 및 제2 희생층을 형성하는 것;
상기 제1 및 제2 희생층 상에 재배선층을 형성하는 것;
상기 재배선층 상에 복수의 반도체 칩들을 실장하는 것;
상기 캐리어 기판 상에, 상기 제1 및 제2 희생층, 상기 재배선층, 및 상기 복수의 반도체 칩들을 덮는 몰드층을 형성하여 웨이퍼 레벨 적층체를 형성하는 것;
상기 제1 희생층과 상기 제2 희생층을 분리하여 상기 웨이퍼 레벨 적층체로부터 상기 제1 희생층과 상기 캐리어 기판을 제거하는 것; 및
상기 제2 희생층, 상기 재배선층, 및 상기 몰드층을 다이싱하여 상기 복수의 반도체 칩들 중 적어도 하나를 포함하는 반도체 패키지들을 형성하는 것을 포함하되,
상기 제1 및 제2 희생층은 상기 캐리어 기판보다 작은 직경을 갖도록 형성되고, 상기 재배선층은 상기 제1 및 제2 희생층보다 작은 직경을 갖도록 형성되고,
상기 몰드층은 상기 재배선층보다 크고 상기 제1 희생층보다 작은 직경을 갖도록 형성되는 팬-아웃 웨이퍼 레벨 패키지 제조 방법. - 제1항에 있어서,
상기 제1 및 제2 희생층을 형성하는 것은,
상기 캐리어 기판 상에 직접적으로 제1 희생층을 형성하는 것; 및
상기 제1 희생층 상에 Ti 및 Cu를 포함하는 제2 희생층을 형성하는 것을 포함하는 팬-아웃 웨이퍼 레벨 패키지 제조 방법. - 제1항에 있어서,
상기 제1 희생층을 형성하는 것은,
상기 캐리어 기판 상에 릴리즈막을 형성하고, 상기 릴리즈막의 테두리를 제거하여 상기 캐리어 기판의 테두리의 상면을 노출하는 것을 포함하는 팬-아웃 웨이퍼 레벨 패키지 제조 방법. - 제1항에 있어서,
상기 재배선층을 형성하는 것은,
상기 제2 희생층 상에 도전층을 형성하는 것; 및
상기 캐리어 기판, 상기 제2 희생층 및 상기 도전층을 덮으며, PID(photo Imageable dielectric)를 포함하는 절연층을 형성하는 것을 포함하는 팬-아웃 웨이퍼 레벨 패키지 제조 방법. - 제4항에 있어서,
상기 제1 희생층과 상기 제2 희생층은 (실질적으로) 동일한 직경을 갖도록 형성되는 팬-아웃 웨이퍼 레벨 패키지 제조 방법. - 제5항에 있어서,
상기 재배선층을 형성하는 것은,
상기 절연층의 테두리를 제거하여 상기 캐리어 기판의 테두리의 상면과 상기 제2 희생층의 테두리의 상면을 노출하는 것을 포함하는 팬-아웃 웨이퍼 레벨 패키지 제조 방법. - 제6항에 있어서,
상기 몰드층은,
상기 제2 희생층의 노출된 테두리의 상면 면적의 적어도 1%이상 99%이하의 면적을 덮도록 형성되는 팬-아웃 웨이퍼 레벨 패키지 제조 방법. - 캐리어 기판 상에 순차로 적층되는 희생층, 및 재배선층과 상기 재배선층 상에 배열되는 복수의 반도체 칩들을 형성하는 것;
상기 복수의 반도체 칩들을 덮는 몰드층을 형성하여 웨이퍼 레벨 적층체를 형성하는 것;
상기 웨이퍼 레벨 적층체에서 상기 희생층과 상기 캐리어 기판을 제거하여 상기 재배선층의 하면을 노출하는 것; 및
상기 웨이퍼 레벨 적층체을 다이싱하여 상기 복수의 반도체 칩 중 적어도 하나를 포함하는 반도체 패키지를 형성하는 것을 포함하되,
상기 몰드층은 상기 복수의 반도체 칩 각각의 상면과 측면, 상기 재배선층의 상면과 측면 및 상기 희생층의 상면 일부를 덮으며,
상기 웨이퍼 레벨 적층체는 계단 형상의 단면을 갖는 팬-아웃 웨이퍼 레벨 패키지 제조 방법. - 제8항에 있어서,
상기 희생층은 상기 캐리어 기판보다 작은 직경을 갖고, 상기 재배선층은 상기 희생층보다 작은 직경을 가지며,
상기 몰드층은 상기 재배선층보다 크고 상기 희생층보다 작은 직경을 갖는 팬-아웃 웨이퍼 레벨 패키지 제조 방법. - 제8항에 있어서,
상기 웨이퍼 레벨 적층체는,
상기 캐리어 기판의 상면이 노출된 제1 계단면과, 상기 제1 계단면과 단차를 가지며 상기 희생층의 상면이 노출된 제2 계단면을 포함하는 팬-아웃 웨이퍼 레벨 패키지 제조 방법.
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