KR20060083284A - 솔더 기둥을 이용한 반도체 패키지의 기판 접합 구조 및방법 - Google Patents
솔더 기둥을 이용한 반도체 패키지의 기판 접합 구조 및방법 Download PDFInfo
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Abstract
Description
솔더 기둥 높이(㎛) | 개구부 깊이(㎛) | |||||
패키지 | 실장 기판 | |||||
최소 | 최대 | 최적 | 최소 | 최대 | 최적 | |
350 | 35 | 175 | 140 | 35 | 175 | 140 |
300 | 30 | 150 | 120 | 30 | 150 | 120 |
250 | 25 | 125 | 100 | 25 | 125 | 100 |
Claims (20)
- 집적회로 칩이 부착되는 제1면과 상기 제1면의 반대쪽 면인 제2면을 가지는 인쇄회로기판과, 상기 제2면에 소정의 패턴으로 형성되는 제1 배선층과, 상기 제1 배선층을 덮도록 상기 제2면에 형성되며 제1 개구부를 통하여 상기 제1 배선층의 접합 영역을 노출시키는 제1 절연 보호막을 구비하는 반도체 패키지;상기 제2면을 향하는 제3면과, 상기 제3면에 소정의 패턴으로 형성되는 제2 배선층과, 상기 제2 배선층을 덮도록 상기 제3면에 형성되며 제2 개구부를 통하여 상기 제2 배선층의 접합 영역을 노출시키는 제2 절연 보호막을 구비하는 패키지 실장 기판;상기 제1 개구부와 상기 제2 개구부 내에 채워지고 상기 제1 배선층과 상기 제2 배선층에 접합되는 솔더 기둥을 포함하며,상기 제1 개구부의 깊이와 상기 제2 개구부의 깊이의 합은 상기 솔더 기둥의 높이의 약 20% 내지 약 100%인 것을 특징으로 하는 반도체 패키지의 기판 접합 구조.
- 제1항에 있어서, 상기 솔더 기둥의 옆면은 상기 제2면 및 상기 제3면과 실질적으로 수직을 이루는 것을 특징으로 하는 반도체 패키지의 기판 접합 구조.
- 제1항에 있어서, 상기 제1 절연 보호막과 상기 제2 절연 보호막은 포토 솔더 레지스트인 것을 특징으로 하는 반도체 패키지의 기판 접합 구조.
- 제1항에 있어서, 상기 제1 개구부와 상기 제2 개구부의 내벽에 금속막이 형성되는 것을 특징으로 하는 반도체 패키지의 기판 접합 구조.
- 제1항 내지 제4항 중의 어느 한 항에 있어서, 상기 제1 개구부의 깊이는 상기 솔더 기둥의 높이의 약 10% 내지 약 50%인 것을 특징으로 하는 반도체 패키지의 기판 접합 구조.
- 제1항 내지 제4항 중의 어느 한 항에 있어서, 상기 제2 개구부의 깊이는 상기 솔더 기둥의 높이의 약 10% 내지 약 50%인 것을 특징으로 하는 반도체 패키지의 기판 접합 구조.
- 제1항 내지 제4항 중의 어느 한 항에 있어서, 상기 제1 개구부의 깊이와 상기 제2 개구부의 깊이의 합은 상기 솔더 기둥의 높이의 약 80%인 것을 특징으로 하는 반도체 패키지의 기판 접합 구조.
- 제5항에 있어서, 상기 제1 개구부의 깊이는 상기 솔더 기둥의 높이의 약 40%인 것을 특징으로 하는 반도체 패키지의 기판 접합 구조.
- 제6항에 있어서, 상기 제2 개구부의 깊이는 상기 솔더 기둥의 높이의 약 40%인 것을 특징으로 하는 반도체 패키지의 기판 접합 구조.
- 집적회로 칩이 부착되는 제1면과 상기 제1면의 반대쪽 면인 제2면을 가지는 인쇄회로기판과, 상기 제2면에 소정의 패턴으로 형성되는 제1 배선층과, 상기 제1 배선층을 덮도록 상기 제2면에 형성되며 제1 개구부를 통하여 상기 제1 배선층의 접합 영역을 노출시키는 제1 절연 보호막을 구비하는 반도체 패키지를 제공하는 단계;상기 제2면을 향하는 제3면과, 상기 제3면에 소정의 패턴으로 형성되는 제2 배선층과, 상기 제2 배선층을 덮도록 상기 제3면에 형성되며 제2 개구부를 통하여 상기 제2 배선층의 접합 영역을 노출시키는 제2 절연 보호막을 구비하는 패키지 실장 기판을 제공하는 단계;상기 제2 배선층과 접합되도록 상기 제2 개구부 안에 솔더 기둥을 형성하는 단계;상기 솔더 기둥을 상기 제1 개구부 안에 삽입하여 상기 제1 배선층과 접합하는 단계를 포함하며,상기 제1 개구부의 깊이와 상기 제2 개구부의 깊이의 합은 상기 솔더 기둥의 높이의 약 20% 내지 약 100%인 것을 특징으로 하는 반도체 패키지의 기판 접합 방법.
- 제10항에 있어서, 상기 솔더 기둥을 형성하는 단계는 솔더 페이스트 인쇄 공정을 이용하여 이루어지는 것을 특징으로 하는 반도체 패키지의 기판 접합 방법.
- 제11항에 있어서, 상기 솔더 페이스트 인쇄 공정은, 상기 제2 개구부와 동일한 형태의 제3 개구부를 가지는 인쇄 마스크를 상기 제2 절연 보호막 위에 위치시키는 단계와, 상기 제2 개구부와 상기 제3 개구부 안으로 솔더 페이스트를 밀어 넣는 단계와, 상기 인쇄 마스크를 제거하는 단계를 포함하는 것을 특징으로 하는 반도체 패키지의 기판 접합 방법.
- 제12항에 있어서, 상기 제2 개구부의 깊이와 상기 제3 개구부의 깊이의 합은 상기 솔더 기둥의 높이와 동일한 것을 특징으로 하는 반도체 패키지의 기판 접합 방법.
- 제10항에 있어서, 상기 솔더 기둥을 상기 제1 배선층에 접합하는 단계는 리플로우 공정을 이용하여 이루어지는 것을 특징으로 하는 반도체 패키지의 기판 접합 방법.
- 제10항에 있어서, 상기 제1 절연 보호막과 상기 제2 절연 보호막은 포토 솔더 레지스트인 것을 특징으로 하는 반도체 패키지의 기판 접합 방법.
- 제10항 내지 제15항 중의 어느 한 항에 있어서, 상기 제1 개구부의 깊이는 상기 솔더 기둥의 높이의 약 10% 내지 약 50%인 것을 특징으로 하는 반도체 패키지의 기판 접합 방법.
- 제10항 내지 제15항 중의 어느 한 항에 있어서, 상기 제2 개구부의 깊이는 상기 솔더 기둥의 높이의 약 10% 내지 약 50%인 것을 특징으로 하는 반도체 패키지의 기판 접합 방법.
- 제10항 내지 제15항 중의 어느 한 항에 있어서, 상기 제1 개구부의 깊이와 상기 제2 개구부의 깊이의 합은 상기 솔더 기둥의 높이의 약 80%인 것을 특징으로 하는 반도체 패키지의 기판 접합 방법.
- 제16항에 있어서, 상기 제1 개구부의 깊이는 상기 솔더 기둥의 높이의 약 40%인 것을 특징으로 하는 반도체 패키지의 기판 접합 방법.
- 제17항에 있어서, 상기 제2 개구부의 깊이는 상기 솔더 기둥의 높이의 약 40%인 것을 특징으로 하는 반도체 패키지의 기판 접합 방법.
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