KR102419893B1 - 보호 부재를 가지는 인쇄 회로 기판 및 이를 포함하는 반도체 패키지 제조 방법 - Google Patents
보호 부재를 가지는 인쇄 회로 기판 및 이를 포함하는 반도체 패키지 제조 방법 Download PDFInfo
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Abstract
Description
도 2는 본 개시의 일 실시예에 따른 인쇄 회로 기판의 단면도이다.
도 3은 도 2에 도시된 인쇄 회로 기판의 하방 평면도이다.
도 4는 본 개시의 일 실시예에 따른 인쇄 회로 기판의 단면도이다.
도 5는 도 4에 도시된 인쇄 회로 기판의 하방 평면도이다.
도 6은 본 개시의 일 실시예에 따른 인쇄 회로 기판의 제조 방법을 설명하기 위한 플로우 차트이다.
도 7 내지 도 12는 본 개시의 일 실시예에 따른 인쇄 회로 기판의 제조 방법을 단계적으로 나타내는 단면도들이다.
112 : 도전층 113, 114 : 도전성 패드
115 : 상면 솔더 마스크 116 : 하면 솔더 마스크
117 : 도전성 비아 118, 218 : 솔더 범프
119 : 접착 테이프
120 :외부 접속 단자 122 : 솔더 볼
130 : 보호 부재 132 : 접착층
134 : 보호막 140, 240, 340 : 반도체 칩
150 : 봉지재 236, 336 : 보조막
Claims (10)
- 외부 접속 단자가 부착된 기판 본체를 제공하는 단계와,
상기 외부 접속 단자를 덮도록 보호 부재를 부착하여 인쇄 회로 기판을 형성하는 인쇄 회로 기판 형성 단계와,
상기 기판 본체의 상기 보호 부재와 반대되는 면에 반도체 칩을 실장하는 반도체 칩 실장 단계,
상기 보호 부재를 상기 기판 본체로부터 제거하는 필름 제거 단계를 포함하며, 및
상기 필름 제거 단계 후에, 상기 외부 접속 단자에 리플로우 공정을 수행하여 솔더 볼을 형성하는 단계를 포함하며,
상기 필름 제거 단계에서 상기 외부 접속 단자의 측면 및 하면이 노출되는 것을 특징으로 하는 반도체 패키지 제조 방법. - 제 1 항에 있어서,
상기 보호 부재는 상기 기판 본체의 변형 방향과 반대되는 방향으로 변형되는 것을 특징으로 하는 반도체 패키지 제조 방법. - 제 2 항에 있어서,
상기 보호 부재는 접착층 및 보호막을 포함하며,
상기 접착층의 상면은 상기 기판 본체의 제 1 면에 접하고, 상기 보호막의 상면이 상기 접착층의 하면에 접하는 것을 특징으로 하는 반도체 패키지 제조 방법. - 제 3 항에 있어서,
상기 접착층은 실리콘을 포함하고, 상기 보호막은 폴리이미드를 포함하는 것을 특징으로 하는 반도체 패키지 제조 방법. - 제 4 항에 있어서,
상기 접착층 및 상기 보호막은 서로 다른 열수축률 또는 열팽창률을 가지는 것을 특징으로 하는 반도체 패키지 제조 방법. - 외부 접속 단자가 부착된 기판 본체를 제공하는 단계와,
상기 기판 본체의 휨을 제어하는 보호 부재 및 보조막을 상기 기판 본체의 제 1 면에 부착하여 인쇄 회로 기판을 형성하는 인쇄 회로 기판 형성 단계와,
상기 제 1 면의 반대면인 상기 기판 본체의 제 2 면에 반도체 칩을 실장하는 반도체 칩 실장 단계,
상기 보호 부재 및 보조막을 상기 기판 본체로부터 제거하는 필름 제거 단계를 포함하며, 및
상기 필름 제거 단계 후에, 상기 외부 접속 단자에 리플로우 공정을 수행하여 솔더 볼을 형성하는 단계를 포함하며,
상기 필름 제거 단계에서 상기 외부 접속 단자의 측면 및 하면이 노출되는 것을 특징으로 하는 반도체 패키지 제조 방법. - 제 6 항에 있어서,
상기 보호 부재 및 보조막은 상기 기판 본체의 변형 방향과 반대되는 방향으로 변형되는 것을 특징으로 하는 반도체 패키지 제조 방법. - 제 7 항에 있어서,
상기 보조막은 상기 인쇄 회로 기판의 일방향을 따라 형성되는 것을 특징으로 하는 반도체 패키지 제조 방법. - 제 6 항에 있어서,
상기 보조막은 폴리이미드를 포함하는 반도체 패키지 제조 방법. - 제 6 항에 있어서,
상기 보호 부재는 접착층 및 보호막을 포함하며,
상기 접착층의 상면은 상기 기판 본체의 제 1 면에 접하고, 상기 보호막의 상면이 상기 접착층의 하면에 접하는 것을 특징으로 하는 반도체 패키지 제조 방법.
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