KR101462770B1 - 인쇄회로기판과 그의 제조방법 및 그 인쇄회로기판을 포함하는 반도체 패키지 - Google Patents
인쇄회로기판과 그의 제조방법 및 그 인쇄회로기판을 포함하는 반도체 패키지 Download PDFInfo
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Abstract
이와 같은 본 발명에 의하면, 베이스 기판에 소정 깊이의 캐비티를 형성하여 전자부품이 그 캐비티에 실장되도록 함으로써, PoP 구조의 반도체 패키지의 제조에 있어서 상부 패키지 기판의 고밀도, 고성능을 위해 볼 피치가 축소되었을 경우에도 상부 패키지와 하부 패키지 간의 갭(gap)을 확보할 수 있다.
Description
도 2는 종래 PoP 구조의 반도체 패키지의 다른 예를 보여주는 도면.
도 3은 본 발명의 실시 예에 따른 인쇄회로기판의 구조를 보여주는 도면.
도 4는 도 3의 인쇄회로기판을 포함하는 본 발명의 실시 예에 따른 반도체 패키지의 구조를 보여주는 도면.
도 5는 본 발명의 실시 예에 따른 인쇄회로기판의 제조방법의 실행 과정을 보여주는 흐름도.
도 6a 내지 6e는 본 발명의 실시 예에 따른 인쇄회로기판의 제조방법에 따라 인쇄회로기판을 제조하는 과정을 순차적으로 보여주는 도면.
도 7a 및 7b는 도 6e의 A 부분에 대한 부분 발췌 확대도.
이에 더하여, 상기 베이스 기판(321)의 상,하부면에는 적어도 한 층 이상의 절연층이 적층될 수 있다. 본 발명에서는 상기 베이스 기판(321)의 상,하부면에 각각 하나의 절연층이 적층된 것을 도시하고 있으며, 이하에서는 상부면에 적층된 절연층은 상부 절연층(602)으로 칭하고, 하부면에 적층된 절연층은 하부 절연층(603)으로 칭하기도 한다.
이에 더하여, 상기 베이스 기판(321)의 상,하부면에는 적어도 한 층 이상의 절연층이 적층될 수 있다. 본 발명에서는 상기 베이스 기판(321)의 상,하부면에 각각 하나의 절연층이 적층된 것을 도시하고 있으며, 이하에서는 상부면에 적층된 절연층은 상부 절연층(602)으로 칭하고, 하부면에 적층된 절연층은 하부 절연층(603)으로 칭하기도 한다.
121,221...PCB 기판 122,222,330...전자부품
320'...(본 발명)인쇄회로기판 321...베이스 기판
322,606,607...회로 패턴 323,604,605...비아
321c...캐비티 322p...패드
601...제1 보호층 602,603...절연층
608,609...제2 보호층
Claims (14)
- 복수의 회로 패턴들을 포함하는 베이스 기판;
상기 베이스 기판의 상,하부면에 적층된 적어도 한 층 이상의 절연층;
최상층에 위치하는 상기 절연층의 소정 영역을 제거하여 형성된 캐비티;
상기 캐비티의 바닥면에 매립된 패드;
상기 캐비티에 실장되며, 상기 패드와 전기적으로 연결되는 전자부품; 및
상기 캐비티의 측벽 하부에 매립된 정렬 패턴;을 포함하는 인쇄회로기판.
- 제1항에 있어서,
상기 패드의 상면과 상기 캐비티의 바닥면은 동일 평면상에 위치하는 것을 특징으로 하는 인쇄회로기판.
- 삭제
- 제1항에 있어서,
상기 전자부품은 외부 단자들을 포함하며, 상기 외부 단자들이 상기 패드를 향하도록 페이스 다운(face down)으로 실장되는 것을 특징으로 하는 인쇄회로기판.
- 제1항에 있어서,
상기 베이스 기판의 내부에 형성되며, 상기 회로 패턴들 및 상기 회로 패턴과 상기 패드를 전기적으로 연결하는 비아를 더 포함하는 것을 특징으로 하는 인쇄회로기판.
- 베이스 기판의 상면부의 소정 영역에 회로 보호용 제1 보호층을 형성하는 단계;
상기 제1 보호층이 형성된 베이스 기판의 상면 및 하면에 절연층을 각각 형성하는 단계;
상기 상,하부 절연층 내부에 비아를 각각 형성한 후, 상기 상부 절연층의 상부 표면 및 하부 절연층의 하부 표면에 회로를 각각 형성하는 단계;
상기 상,하부 절연층의 표면에 각각 형성된 회로 패턴 사이의 공간에 회로 보호용 제2 보호층을 각각 형성하는 단계; 및
상기 상부 절연층의 상기 제1 보호층에 대응하는 위치에 전자부품의 실장을 위한 캐비티를 형성하는 단계;를 포함하는 인쇄회로기판의 제조방법.
- 제6항에 있어서,
상기 베이스 기판은 상,하면 및 내부에 회로가 형성되고, 내부에는 상,하부 회로를 서로 연결하는 비아가 형성되어 있는, 인쇄회로기판의 제조방법.
- 제6항에 있어서,
상기 캐비티를 형성함에 있어서, 상기 상부 절연층의 내부에 매립되어 있는 제1 보호층까지 제거하여, 캐비티의 바닥면에 노출되는 회로 패턴의 상면이 바닥면과의 단차 없이 바닥면과 동일한 평면을 이루도록 형성하는 인쇄회로기판의 제조방법.
- 제6항에 있어서,
상기 캐비티를 형성함에 있어서, 캐비티의 측벽면의 하단부에 상기 제1 보호층의 일부가 남아 있도록 형성하는 인쇄회로기판의 제조방법.
- 하부 반도체 패키지 위에 상부 반도체 패키지가 적층되어 형성된 PoP 구조의 반도체 패키지로서,
상기 하부 반도체 패키지는,
최상층의 절연층에 캐비티가 형성되어 있는 인쇄회로기판; 및 상기 캐비티에 실장된 전자부품을 포함하고,
상기 인쇄회로기판은,
복수의 회로 패턴들을 포함하는 베이스 기판;
상기 베이스 기판의 상,하부면에 적층된 적어도 한 층 이상의 절연층;
최상층에 위치하는 상기 절연층의 소정 영역을 제거하여 형성된 캐비티;
상기 캐비티의 바닥면에 매립된 패드;
상기 캐비티에 실장되며, 상기 패드와 전기적으로 연결되는 전자부품; 및
상기 캐비티의 측벽 하부에 매립된 정렬 패턴;을 포함하는 반도체 패키지.
- 제10항에 있어서,
상기 패드의 상면과 상기 캐비티의 바닥면은 동일 평면상에 위치하는 것을 특징으로 하는 반도체 패키지.
- 삭제
- 제10항에 있어서,
상기 전자부품은 외부 단자들을 포함하며, 상기 외부 단자들이 상기 패드를 향하도록 페이스 다운(face down)으로 실장되는 것을 특징으로 하는 반도체 패키지.
- 제10항에 있어서,
상기 베이스 기판의 내부에 형성되며, 상기 회로 패턴들 및 상기 회로 패턴과 상기 패드를 전기적으로 연결하는 비아를 더 포함하는 것을 특징으로 하는 반도체 패키지.
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US14/068,628 US20140300001A1 (en) | 2013-04-09 | 2013-10-31 | Printed circuit board and manufacturing method thereof, and semiconductor package including the printed circuit board |
US15/014,059 US10342135B2 (en) | 2013-04-09 | 2016-02-03 | Printed circuit board and manufacturing method thereof, and semiconductor package including the printed circuit board |
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US20160157353A1 (en) | 2016-06-02 |
US10342135B2 (en) | 2019-07-02 |
KR20140122062A (ko) | 2014-10-17 |
US20140300001A1 (en) | 2014-10-09 |
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