KR101736984B1 - 벌집형 범프 패드를 갖는 반도체 패키지 기판용 인쇄회로기판 및 이를 포함하는 반도체 패키지 - Google Patents
벌집형 범프 패드를 갖는 반도체 패키지 기판용 인쇄회로기판 및 이를 포함하는 반도체 패키지 Download PDFInfo
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Abstract
Description
상기 제1 범프 패드 군의 연결 패턴은 상기 비아와 상기 2개 이상의 범프 패드들 사이에 각각 위치하며, 상기 제1 범프 패드 군의 연결 패턴을 통하여 상기 비아에 연결된 두개 이상의 범프 패드들은 서로 전기적으로 연결되어 있다.
상기 제1 범프 패드 군의 연결 패턴은 상기 비아와 상기 2개 이상의 범프 패드들 사이에 각각 위치하며, 상기 제1 범프 패드 군의 연결 패턴을 통하여 상기 비아에 연결된 두개 이상의 범프 패드들은 서로 전기적으로 연결되어 있다.
도 2는 상기 도1에서 반도체 칩에 형성된 범프의 구조를 보여주는 단면도이다.
도 3은 본 발명의 일 실시예에 의한 반도체 패키지 기판용 인쇄회로기판의 평면도이다.
도 4는 도3에서 하나의 벌집형 구조에 대한 확대 평면도이다.
도 5는 도4에서 비아와 범프 패드의 연결방식을 설명하기 위한 평면도이다.
도 6은 본 발명의 다른 실시예에 의한 반도체 패키지 기판용 인쇄회로기판의 평면도이다.
도 7은 도 6의 반도체 패키지 기판용 인쇄회로기판에 형성된 제1 범프 패드 군의 수직 구조를 보여주는 단면도이다.
도 8은 도 6의 반도체 패키지 기판용 인쇄회로기판에 형성된 제2 범프 패드 군의 수직 구조를 보여주는 단면도이다.
도 9는 본 발명의 또 다른 실시예에 의한 반도체 패키지 기판용 인쇄회로기판의 평면도들이다.
도 10은 본 발명의 다른 실시예에 의한 반도체 패키지의 단면도이다.
도 11은 본 발명의 또 다른 실시예에 의한 반도체 패키지의 단면도이다.
도 12는 본 발명의 또 다른 실시예에 의한 반도체 모듈의 단면도이다.
하지만 인쇄회로기판(100)의 상부면(A)에서 범프 패드(도 3의 102)의 배치는, 반도체 칩(120)의 범프(130)의 설계에 대응할 수 있을 정도로 세밀화되지 못하고 있는 실정이다. 이를 위하여 본 발명에 의한 반도체 패키지 기판용 인쇄회로기판(100)은, 상부면(A)에 설계되는 비아(via)와 범프 패드(bump pad) 및 연결 패턴의 배치를 최적화하여 범프 패드의 집적도를 현저하게 높일 수 있도록 한다.
상기 메모리 모듈(1000D)의 인쇄회로기판(100D)은 칩 스케일 패키지(700, 800)가 범프(730, 830)를 통하여 탑재된다. 이때 상기 인쇄회로기판(100D)의 칩 스케일 패키지(700, 800)가 탑재되는 영역의 범프 패드를 상술한 도 3, 도 6, 및 도 9에 도시된 바와 같이 배치할 수 있다.
따라서 단위 면적 내에 배치되는 범프 패드의 집적도를 높일 수 있다. 도면에서 참조부호 170은 반도체 메모리 모듈(1000D)이 다른 인쇄회로기판에 연결될 때, 사용되는 커넥터를 가리킨다. 상기 반도체 메모리 모듈(1000D)은 SSD(Solid State Driver) 혹은 DRAM(Dynamic Random Access Memory) 메모리 모듈일 수 있다.
이와 함께 벌집 형태의 범프 패드를 반도체 패키지 기판용 인쇄회로기판의 특정 영역에 집중 배치하여, 전원단자 혹은 접지 단자용 범프 패드로 적용함으로써 잡음을 억제하여 반도체 패키지의 전기적 특성을 개선할 수 있다.
103; 인쇄회로기판 본체, 104/106: 절연층,
105: 최상부 금속층, 107: 연결 패턴,
108: 최하부 금속층, 110: 비아(via),
112/116: 상부/하부 비아, 114: 중간 금속층,
118: 솔더 레지스터, 120: 반도체 칩,
122: 본드패드, 124: UBM 하부층,
126: UBM 상부층, 130: 범프(bump),
140: 봉지재, 150: 언더필(underfill),
160: 솔더볼, 200/300/400: 인쇄회로기판,
210: 중앙부, 220: 제1 범프 패드 군,
230: 가장자리, 232: 제2 범프 패드 군,
1000: 반도체 패키지.
Claims (10)
- 인쇄회로기판 본체;
상기 인쇄회로기판 본체의 최하부 금속층; 및
상기 인쇄회로기판 본체의 최상부 금속층을 포함하는 반도체 패키지 기판용 인쇄회로기판에 있어서,
상기 최상부 금속층은, 상기 인쇄회로기판 본체로부터 수직방향으로 연결된 비아와, 상기 비아를 중심으로 수평 방향으로 벌집형 모양으로 배열된 벌집형 범프 패드와, 상기 비아와 상기 벌집형 모양으로 배열된 범프 패드들중 2개 이상의 범프 패드들을 연결하는 연결 패턴을 구비하되,
상기 연결 패턴은 상기 비아와 상기 2개 이상의 범프 패드들 사이에 각각 위치하며, 상기 연결 패턴을 통하여 상기 비아에 연결된 두개 이상의 범프 패드들은 서로 전기적으로 연결되어 있는 것을 특징으로 하는 반도체 패키지 기판용 인쇄회로기판. - 제1항에 있어서,
상기 인쇄회로기판 본체는,
다층 기판인 것을 특징으로 하는 반도체 패키지 기판용 인쇄회로기판. - 제1항에 있어서,
상기 인쇄회로기판은,
상기 최상부 금속층 및 최하부 금속층의 연결부만 노출시키는 솔더 레지스터층을 더 구비하는 것을 특징으로 하는 반도체 패키지 기판용 인쇄회로기판. - 인쇄회로기판 본체;
상기 인쇄회로기판 본체의 최하부 금속층; 및
상기 인쇄회로기판 본체의 최상부 금속층을 포함하는 반도체 패키지 기판용 인쇄회로기판에 있어서,
상기 최상부 금속층은,
상기 인쇄회로기판 본체로부터 수직방향으로 연결된 비아와, 상기 비아를 중심으로 수평 방향으로 벌집형 모양으로 배열된 벌집형 범프 패드와, 상기 비아와 상기 벌집형 모양으로 배열된 범프 패드들중 2개 이상의 범프 패드들을 연결하는 연결 패턴을 구비하는 제1 범프 패드 군과,
상기 제1 범프 패드 군과 다른 배열의 비아와 범프 패드들을 갖는 제2 범프 패드 군을 구비하되,
상기 제1 범프 패드 군의 연결 패턴은 상기 비아와 상기 2개 이상의 범프 패드들 사이에 각각 위치하며, 상기 제1 범프 패드 군의 연결 패턴을 통하여 상기 비아에 연결된 두개 이상의 범프 패드들은 서로 전기적으로 연결되어 있는 것을 특징으로 하는 반도체 패키지 기판용 인쇄회로기판. - 제4항에 있어서,
상기 제1 범프 패드 군은, 상기 최상부 금속층에 중앙 영역에 위치하고,
상기 제2 범프 패드 군은, 상기 최상부 금속층의 가장자리 영역에 위치하는 것을 특징으로 하는 반도체 패키지 기판용 인쇄회로기판. - 제4항에 있어서,
상기 제1 범프 패드 군과, 상기 제2 범프 패드 군은,
상기 최상부 금속층에서 서로 교번(alternation)하는 구조로 형성된 것을 특징으로 하는 반도체 패키지 기판용 인쇄회로기판. - 제4항에 있어서,
상기 제1 범프 패드 군은,
반도체 소자의 전원(power) 단자 혹은 접지(ground) 단자로 사용되는 것을 특징으로 하는 반도체 패키지 기판용 인쇄회로기판. - 제4항에 있어서,
상기 제1 범프 패드 군은,
상기 범프 패드가 상기 비아와 오버랩핑(overlapping)되지 않는 것을 특징으로 하는 반도체 패키지 기판용 인쇄회로기판. - 제4항에 있어서,
상기 제2 범프 패드 군은,
상기 제2 범프 패드 군을 구성하는 상기 범프 패드들중 하나 이상의 범프 패드가 상기 비아와 오버랩핑되는 것을 특징으로 하는 반도체 패키지 기판용 인쇄회로기판. - 반도체 패키지 기판용 인쇄회로기판; 및
상기 인쇄회로기판의 최상부 금속층에 범프를 통하여 탑재되는 하나 이상의 반도체 칩을 포함하는 반도체 패키지에 있어서,
상기 인쇄회로기판의 최상부 금속층은,
상기 인쇄회로기판 본체로부터 수직방향으로 연결된 비아와, 상기 비아를 중심으로 수평 방향으로 벌집형 모양으로 배열된 벌집형 범프 패드와, 상기 비아와 상기 벌집형 모양으로 배열된 범프 패드들중 2개 이상의 범프 패드들을 연결하는 연결 패턴을 구비하는 제1 범프 패드 군과,
상기 제1 범프 패드 군과 다른 배열의 비아와 범프 패드들을 갖는 제2 범프 패드 군을 구비하되,
상기 제1 범프 패드 군의 연결 패턴은 상기 비아와 상기 2개 이상의 범프 패드들 사이에 각각 위치하며, 상기 제1 범프 패드 군의 연결 패턴을 통하여 상기 비아에 연결된 두개 이상의 범프 패드들은 서로 전기적으로 연결되어 있는 것을 특징으로 하는 반도체 패키지.
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