KR102341396B1 - 반도체 패키지 및 이에 적용되는 금속 브릿지 - Google Patents
반도체 패키지 및 이에 적용되는 금속 브릿지 Download PDFInfo
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- KR102341396B1 KR102341396B1 KR1020210057916A KR20210057916A KR102341396B1 KR 102341396 B1 KR102341396 B1 KR 102341396B1 KR 1020210057916 A KR1020210057916 A KR 1020210057916A KR 20210057916 A KR20210057916 A KR 20210057916A KR 102341396 B1 KR102341396 B1 KR 102341396B1
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- metal bridge
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Abstract
Description
도 2는 본 발명의 일 실시예에 의한 반도체 패키지의 단면구조를 도시한 것이다.
도 3은 도 2의 반도체 패키지의 제1예를 도시한 것이다.
도 4는 도 2의 반도체 패키지의 제2예를 도시한 것이다.
도 5는 도 2의 반도체 패키지의 제3예를 도시한 것이다.
도 6은 도 2의 반도체 패키지의 제4예를 도시한 것이다.
도 7은 도 5의 제3예를 구현한 반도체 패키지의 사시도를 도시한 것이다.
도 8은 도 7의 반도체 패키지의 단면구조를 도시한 것이다.
도 9는 도 7의 반도체 패키지의 분해사시도를 도시한 것이다.
도 10은 도 7의 반도체 패키지가 적용된 전체 제품 디자인을 예시한 것이다.
도 11은 도 10의 분해사시도를 예시한 것이다.
112 : 절연층 113 : 금속층
120 : 제2기판 121 : 금속층
122 : 절연층 123 : 금속층
130 : 반도체칩 131 : 제1전도성 접착제
140 : 금속 브릿지 141 : 제2전도성 접착제
142 : 제3전도성 접착제 143 : 접착제
150 : 패키지 하우징 160 : 터미널리드
161 : 전도성 접착제 162,163 : 연결소재
170 : 리드프레임
Claims (22)
- 전기적 연결이 가능하도록 특정 금속패턴이 형성된 제1기판;
상기 제1기판에 대향하여 이격 형성되고, 전기적 연결이 가능하도록 특정 금속패턴이 형성된 제2기판;
상기 제1기판, 상기 제2기판, 또는 상기 제1기판과 상기 제2기판에, 일측면이 제1전도성 접착제를 개재하여 접합되는 한 개 이상의 반도체칩;
일단은 상기 반도체칩의 타측면에 제2전도성 접착제를 개재하여 접합되고, 타단은 상기 일단에 대향하는 상기 제2기판, 상기 제1기판, 또는 상기 제2기판과 상기 제1기판에, 제3전도성 접착제를 개재하여 접합되되, 탄성을 갖도록 특정 형상으로 절곡 형성된 금속 브릿지;
상기 반도체칩과 상기 금속 브릿지의 적어도 일부를 감싸는 패키지 하우징; 및
상기 제1기판, 상기 제2기판, 또는 상기 금속 브릿지에 전기적으로 연결되고, 상기 패키지 하우징 외부로 노출되는, 한 개 이상의 터미널리드;를 포함하고,
상기 제1기판과 상기 제2기판 사이에 상기 금속 브릿지를 접합하기 위한 상기 제2전도성 접착제의 중심과 상기 제3전도성 접착제의 중심 사이는 수평방향으로 빗겨 형성되되, 상기 제2전도성 접착제의 중심과 상기 제3전도성 접착제의 중심 사이의 수평접합거리(H)는 0.5㎜ 내지 7㎜이고, 상기 금속 브릿지의 일단과 타단 사이의 수직접합거리(V)는 0.1㎜ 내지 5㎜이며,
상기 금속 브릿지의 타단이 상기 제2기판과 상기 제1기판 각각에 제3-1전도성 접착제와 제3-2전도성 접착제를 개재하여 접합되는 경우 상기 제3-1전도성 접착제의 중심과 상기 제3-2전도성 접착제의 중심 사이는 수평방향으로 빗겨 형성되는,
반도체 패키지. - 제 1 항에 있어서,
상기 제1기판 또는 상기 제2기판은, 한 개 이상의 절연층을 포함하는 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 있어서,
상기 제1기판 또는 상기 제2기판은, 금속소재 또는 절연소재로 이루어지는 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 있어서,
상기 제1기판 또는 상기 제2기판은, 한 개 이상의 금속층과, 한 개 이상의 절연층과, 한 개 이상의 금속층의 적층구조로 이루어지는 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 있어서,
상기 제1전도성 접착제와 접합되는 상기 제1기판 또는 상기 제2기판의 금속층 두께, 또는
상기 제3전도성 접착제와 접합되는 상기 제2기판 또는 상기 제1기판의 금속층의 두께는, 15㎛ 내지 2㎜인 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 있어서,
상기 금속 브릿지의 두께는, 0.1㎜ 내지 2mm인 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 있어서,
상기 금속 브릿지의 열전도도는, 200W/(m-k) 내지 500W/(m-k)인 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 있어서,
상기 금속 브릿지는, Cu 및 Fe 중 어느 하나 이상의 성분을 포함하는 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 있어서,
상기 제1 내지 제3전도성 접착제는, Ag, Cu 및 Sn 중 어느 하나 이상의 성분을 포함하는 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 있어서,
상기 제1 내지 제3전도성 접착제의 두께는, 10㎛ 내지 500㎛인 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 있어서,
상기 금속 브릿지는, 상기 한 개 이상의 반도체칩의 상면에 접합되고 상기 패키지 하우징 외부로 연장되어 노출되어서 터미널리드로서의 기능을 수행하는 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 있어서,
상기 금속 브릿지는, 상기 한 개 이상의 반도체칩의 상면에 접합되고 상기 제1기판, 또는 상기 제2기판, 또는 상기 제1기판과 상기 제2기판에 접합되면서 상기 패키지 하우징 외부로 연장되어 노출되어서 터미널리드로서의 기능을 수행하는 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 있어서,
상기 금속 브릿지의 일단은 상기 한 개 이상의 반도체칩의 상면에 접합되고,
상기 금속 브릿지의 타단은 상기 제1기판, 상기 제2기판, 또는 상기 제1기판과 상기 제2기판에 접합되는 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 있어서,
상기 금속 브릿지의 일단은 상기 한 개 이상의 반도체칩의 상면에 접합되고,
상기 금속 브릿지의 타단은 상기 한 개 이상의 터미널리드와 전기적으로 연결되는 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 있어서,
상기 터미널리드의 일단은 상기 패키지 하우징 내부의 상기 제1기판, 상기 제2기판, 또는 상기 제1기판과 상기 제2기판에 연결소재에 의해 전기적으로 연결되는 것을 특징으로 하는, 반도체 패키지. - 제 15 항에 있어서,
상기 연결소재는 전도성 접착제이고, 상기 전도성 접착제에 의해 상기 터미널리드의 일단은, 상기 제1기판 또는 상기 제2기판 또는 상기 제1기판과 상기 제2기판에 전기적으로 연결되거나, 또는
초음파용접에 의해 상기 터미널리드의 일단은, 상기 제1기판 또는 상기 제2기판 또는 상기 제1기판과 상기 제2기판에 직접 전기적으로 연결되는 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 있어서,
상기 제1기판, 상기 제2기판, 또는 상기 제1기판과 상기 제2기판의 적어도 일부가 상기 패키지 하우징 일면으로 노출되는 것을 특징으로 하는, 반도체 패키지. - 제 2 항에 있어서,
상기 반도체칩의 상면에 접합되는 상기 금속 브릿지의 두께는 상기 제1기판 또는 상기 제2기판의 절연층의 두께보다 큰 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 있어서,
상기 반도체칩은 IGBT, 다이오드, MOSFET 또는 JFET인 것을 특징으로 하는, 반도체 패키지. - 제 1 항에 기재된 반도체 패키지를 인버터, 컨버터 또는 OBC의 구동에 사용하는, 반도체 패키지.
- 삭제
- 제 1 항에 기재된 반도체 패키지에 적용되는 금속 브릿지.
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