KR100969441B1 - 반도체칩이 실장된 인쇄회로기판 및 그 제조방법 - Google Patents
반도체칩이 실장된 인쇄회로기판 및 그 제조방법 Download PDFInfo
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- KR100969441B1 KR100969441B1 KR1020080053041A KR20080053041A KR100969441B1 KR 100969441 B1 KR100969441 B1 KR 100969441B1 KR 1020080053041 A KR1020080053041 A KR 1020080053041A KR 20080053041 A KR20080053041 A KR 20080053041A KR 100969441 B1 KR100969441 B1 KR 100969441B1
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Abstract
Description
유형 | 구성 | 녹는점(℃) | 비중 |
주석/납(Tin/Lead) |
Sn/37Pb | 183 | 8.4 |
Sn/36Pb/2Ag | 179~191 | 8.4 | |
Sn/90Pb | 275~302 | 10.7 | |
Sn/10Pb | 183~213 | 7.55 | |
무연(Lead-free) |
Sn/2.5Ag/0.5Cu | 217~219 | 7.4 |
Sn/4Ag/0.5Cu | 217~219 | 7.4 | |
Sn/3.5Ag | 219~223 | 7.36 | |
Sn/3Ag/0.5Cu | 217~219 | 7.4 |
Claims (11)
- 상면에 노출된 접속패드를 구비하는 반도체칩;상기 접속패드 상에 형성된 제1 융점을 가지는 제1 솔더볼;최외각 회로층에 형성된 외부접속단자를 구비하는 인쇄회로기판;상기 외부접속단자 상에 형성되고 상기 제1 솔더볼과 접속되며, 상기 제1 융점보다 높은 제2 융점을 갖는 제2 솔더볼; 및상기 반도체칩 상면을 덮어 봉합하되, 상기 제1 솔더볼의 상측 단부를 노출시키는 개구부를 갖도록 상기 반도체칩 상면으로부터 동일한 두께로 상기 제1 솔더볼의 측면을 감싸는 수지봉합부;을 포함하는 반도체칩이 실장된 인쇄회로기판.
- 삭제
- 제1항에 있어서,상기 제2 솔더볼은 구형 또는 반구형 형상인 반도체칩이 실장된 인쇄회로기판.
- 제1항에 있어서,상기 제1 융점과 상기 제2 융점과의 온도 차이는 15℃ 보다 큰 반도체칩이 실장된 인쇄회로기판.
- (A) 반도체칩의 상면에 노출된 접속패드에 제1 융점을 갖는 제1 솔더볼을 형성하는 단계;(B) 상기 반도체칩의 상면을 덮어 봉합하며, 상기 제1 솔더볼의 상측 단부를 노출시키는 개구부를 갖도록 상기 반도체칩 상면으로부터 동일한 두께로 상기 제1 솔더볼의 측면을 감싸는 수지봉합부를 형성하는 단계;(C) 인쇄회로기판의 최외층에 형성된 외부접속단자에 상기 제1 융점보다 높은 제2 융점을 갖는 제2 솔더볼을 형성하는 단계; 및(D) 상기 제1 융점과 상기 제2 융점 사이의 온도에서 상기 제1 솔더볼과 상기 제2 솔더볼을 접속시키는 단계;를 포함하는 반도체칩이 실장된 인쇄회로기판의 제조방법.
- 제5항에 있어서,상기 제2 솔더볼은 구형 또는 반구형 형상인 반도체칩이 실장된 인쇄회로기판의 제조방법.
- 제5항에 있어서,상기 제1 융점과 상기 제2 융점과의 온도 차이는 15℃ 보다 큰 반도체칩이 실장된 인쇄회로기판의 제조방법.
- 제5항에 있어서,상기 제1 솔더볼을 형성하는 단계는,(ⅰ) 반도체칩 상부에 접속패드를 노출하는 제1 솔더볼 형성용 개구부를 갖 는 제1 마스크를 배치하는 단계;(ⅱ) 상기 제1 마스크에 형성된 개구부에 제1 솔더를 충전하는 단계; 및(ⅲ) 상기 제1 마스크를 제거하고 리플로우 공정을 수행하여 제1 솔더볼을 형성하는 단계;를 포함하는 반도체칩이 실장된 인쇄회로기판의 제조방법.
- 제5항에 있어서,상기 제2 솔더볼을 형성하는 단계는,(ⅰ) 기판의 최외층에 외부접속단자를 노출하는 제2 솔더볼 형성용 개구부를 갖는 제2 마스크를 배치하는 단계;(ⅱ) 상기 제2 마스크에 형성된 개구부에 제2 솔더를 충전하는 단계; 및(ⅲ) 상기 제2 마스크를 제거하고 리플로우 공정을 수행하여 제2 솔더볼을 형성하는 단계;를 포함하는 반도체칩이 실장된 인쇄회로기판의 제조방법.
- 제5항에 있어서,상기 제1 솔더볼과 제2 솔더볼을 접속하는 단계는,(ⅰ) 상기 제1 솔더볼과 상기 제2 솔더볼의 노출면에 플럭스를 도포하는 단계; 및(ⅱ) 상기 제1 융점과 상기 제2 융점 사이의 온도에서 수행되는 리플로우 공 정으로 상기 제1 솔더볼 및 제2 솔더볼을 접속하는 단계;를 포함하는 반도체칩이 실장된 인쇄회로기판의 제조방법.
- 삭제
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US12/232,252 US20090302468A1 (en) | 2008-06-05 | 2008-09-12 | Printed circuit board comprising semiconductor chip and method of manufacturing the same |
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TWI399974B (zh) * | 2010-03-12 | 2013-06-21 | Primax Electronics Ltd | 攝像模組之組裝方法 |
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CN202816916U (zh) * | 2012-10-10 | 2013-03-20 | 矽力杰半导体技术(杭州)有限公司 | 一种倒装封装装置 |
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