KR20100096909A - Stack package - Google Patents
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- KR20100096909A KR20100096909A KR1020090015996A KR20090015996A KR20100096909A KR 20100096909 A KR20100096909 A KR 20100096909A KR 1020090015996 A KR1020090015996 A KR 1020090015996A KR 20090015996 A KR20090015996 A KR 20090015996A KR 20100096909 A KR20100096909 A KR 20100096909A
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Abstract
Description
본 발명은 스택 패키지에 관한 것으로, 보다 상세하게는, 수직적(Vertical) 스택 구조와 수평적(Planar) 스택 구조를 동시에 구현한 스택 패키지에 관한 것이다.The present invention relates to a stack package, and more particularly, to a stack package which simultaneously implements a vertical stack structure and a horizontal stack structure.
반도체 산업에서 집적회로에 대한 패키징 기술은 소형화에 대한 요구 및 실장 신뢰성을 만족시키기 위해 지속적으로 발전 되고 있다. 예컨대, 소형화에 대한 요구는 칩 크기에 근접한 패키지에 대한 기술 개발을 가속화시키고 있으며, 실장 신뢰성에 대한 요구는 실장 작업의 효율성 및 실장 후의 기계적·전기적 신뢰성을 향상시킬 수 있는 패키징 기술에 대한 중요성을 부각시키고 있다. In the semiconductor industry, packaging technology for integrated circuits is continuously developed to meet the demand for miniaturization and mounting reliability. For example, the demand for miniaturization is accelerating the development of technologies for packages that are close to chip size, and the demand for mounting reliability highlights the importance of packaging technologies that can improve the efficiency of mounting operations and mechanical and electrical reliability after mounting. I'm making it.
또한, 전기·전자 제품의 소형화와 더불어 고 성능화가 요구됨에 따라, 고용량의 반도체 모듈을 제공하기 위한 다양한 기술들이 연구 개발되고 있다. In addition, as miniaturization of electric and electronic products and high performance are required, various technologies for providing a high capacity semiconductor module have been researched and developed.
고용량의 반도체 모듈을 제공하기 위한 방법으로서는 메모리 칩의 고집적화를 들 수 있으며, 이러한 고집적화는 한정된 반도체 칩의 공간 내에 보다 많은 수의 셀을 집적해 넣는 것에 의해 실현될 수 있다. As a method for providing a high capacity semiconductor module, there is a high integration of a memory chip, which can be realized by integrating a larger number of cells in a limited space of the semiconductor chip.
그러나, 이와 같은 메모리 칩의 고집적화는 정밀한 미세 선 폭을 요구하는 등, 고난도의 기술과 많은 개발 시간을 필요로 한다. 따라서, 고용량의 반도체 모듈을 제공하기 위한 다른 방법으로서 스택(Stack) 기술이 제안되었다. However, such high integration of the memory chip requires a high level of technology and a lot of development time, such as requiring a fine fine line width. Therefore, a stack technology has been proposed as another method for providing a high capacity semiconductor module.
상기와 같은 스택 기술은 스택 된 2개의 칩을 하나의 패키지 내에 내장시키는 방법과 패키징 된 2개의 단품의 패키지를 스택하는 방법이 있다. 그러나, 상기와 같이 2개의 단품의 패키지를 스택하는 방법은 전기·전자 제품의 소형화되는 추세와 더불어 그에 따른 반도체 패키지의 높이의 한계가 있다.The stack technology described above includes a method of embedding two stacked chips in one package and stacking two packaged packages. However, the method of stacking two single packages as described above has a limit of height of the semiconductor package with the trend of miniaturization of electrical and electronic products.
따라서, 하나의 패키지의 2∼3개의 반도체 칩들을 탑재시키는 스택 패키지(Stack Package) 및 멀티 칩 패키지(Multi Chip Package)에 대한 연구가 최근 들어 활발하게 진행되고 있다. Therefore, research on a stack package and a multi chip package in which two or three semiconductor chips of one package are mounted has been actively conducted in recent years.
그러나, 자세하게 도시하고 설명하지는 않았지만, 전술한 종래 기술의 경우에는, 기판 상에 반도체 칩들이 수직적으로 스택됨에 따라 반도체 칩과 기판 간을 부착시키거나, 또는, 수직적으로 스택되는 상기 각 반도체 칩 간을 부착시키는 접착층의 두께와 상기 반도체 칩 자체의 두께 마진으로 인해 전체 패키지의 두께를 증가시게 된다.However, although not shown and described in detail, in the above-described prior art, as the semiconductor chips are vertically stacked on the substrate, the semiconductor chips and the substrate are attached to each other, or between the vertically stacked semiconductor chips. The thickness of the entire package is increased due to the thickness of the adhesive layer to be attached and the thickness margin of the semiconductor chip itself.
예컨대, 상기와 같은 접착층 한 개의 두께가 약 150㎛이고, 상기 반도체 칩의 각 두께가 50㎛인 경우에 있어서, 상기와 같은 접착층 및 상기 반도체 칩을 8개 스택하여 스택 패키지를 제작할 경우, 전체 패키지의 두께는 약 1.5㎜가 되게 된다.For example, in the case where the thickness of one adhesive layer is about 150 μm and the thickness of each of the semiconductor chips is 50 μm, when the stack of eight adhesive layers and the semiconductor chips is stacked to manufacture a stack package, the entire package The thickness of will be about 1.5 mm.
이와 같이 상기와 같은 접착층 두께 및 반도체 칩 자체의 두께로 인해 전체 패키지의 두께가 증가하게 되며, 더욱이, 이러한 두께는 양산성 측면에서 패키지로 서의 가치가 없게 된다.As described above, the thickness of the entire package is increased due to the thickness of the adhesive layer and the thickness of the semiconductor chip itself, and furthermore, such thickness is not valuable as a package in terms of mass productivity.
본 발명은 용량을 향상시킴과 아울러, 전체 패키지의 두께를 감소시킨 스택 패키지를 제공한다.The present invention provides a stack package that improves capacity and reduces the thickness of the overall package.
본 발명의 실시예에 따른 스택 패키지는, 기판; 상기 기판 상면에 플래나(Planar) 스택 타입으로 배치된 적어도 둘 이상의 제1반도체 칩들; 상기 제1반도체 칩들 간을 전기적으로 연결하는 제1접속 부재; 상기 각 제1반도체 칩들 상에 스택된 적어도 하나 이상의 제2반도체 칩들; 상기 제2반도체 칩들 간을 전기적으로 연결하는 제2접속 부재; 및 상기 제2반도체 칩들, 제1반도체 칩들 및 기판 간을 상호 전기적으로 연결하는 제3접속 부재;를 포함한다.Stack package according to an embodiment of the present invention, the substrate; At least two first semiconductor chips disposed in a planar stack type on an upper surface of the substrate; A first connection member electrically connecting the first semiconductor chips; At least one second semiconductor chip stacked on each of the first semiconductor chips; A second connection member electrically connecting the second semiconductor chips; And a third connection member electrically connecting the second semiconductor chips, the first semiconductor chips, and the substrate to each other.
상기 제1반도체 칩들 및 상기 제2반도체 칩들 간은 각각 서로 이격 배치된 것을 특징으로 한다.The first semiconductor chips and the second semiconductor chips may be spaced apart from each other.
상기 제1반도체 칩들과 기판 사이 및 제1반도체 칩들과 제2반도체 칩들 사이에 각각 개재된 접착 부재를 더 포함한다.The semiconductor device may further include an adhesive member interposed between the first semiconductor chips and the substrate and between the first semiconductor chips and the second semiconductor chips.
상기 제1, 제2 및 제3접속 부재는 각각 전도성 폴리머(Polymer)를 포함한다.The first, second and third connection members each include a conductive polymer.
상기 제1, 제2 및 제3접속 부재는 각각 전도성 테이프를 포함한다.The first, second and third connection members each comprise a conductive tape.
상기 제3접속 부재는 관통 전극을 포함한다.The third connecting member includes a through electrode.
상기 제1 및 제2반도체 칩들은 각각 동일하거나 또는 서로 상이한 종류로 이 루어진 것을 특징으로 한다.Each of the first and second semiconductor chips may be the same or different types.
본 발명은 내부에 다수의 반도체 칩 간을 스택하는 스택 패키지 형성시, 플래나 구조 및 수직적 스택 구조를 동시에 구현함으로써, 종래의 수직적 구조만을 갖는 스택 패키지보다 그의 용량을 향상시키면서도, 전체 패키지의 두께를 감소시킬 수 있다.According to the present invention, when a stack package stacking a plurality of semiconductor chips therein, the planar structure and the vertical stack structure are simultaneously implemented, thereby improving the capacity of the entire package while improving its capacity than the stack package having only the conventional vertical structure. Can be reduced.
이하에서는 첨부된 도면을 참조하여 본 발명의 바람직한 실시예를 상세하게 설명하도록 한다. Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention.
도 1은 본 발명의 실시예에 따른 스택 패키지를 설명하기 위해 도시한 단면도로서, 이를 설명하면 다음과 같다.1 is a cross-sectional view illustrating a stack package according to an embodiment of the present invention.
도시된 바와 같이 본 발명의 실시예에 따른 스택 패키지(100)는, 기판(102), 다수의 제1반도체 칩들(106a, 106b), 제1접속 부재(114), 다수의 제2반도체 칩들(110a, 110b), 제2접속 부재(116), 제3접속 부재(118), 봉지 부재(120) 및 외부 접속 단자(122)를 포함한다.As shown, the
기판(102)은 상면에 배치된 다수의 본드핑거(104)를 포함한다.The
또한, 이러한 기판(102)의 상면에는 본드핑거(104)를 노출시키는 접착제(124)가 부착된다.In addition, an
제1반도체 칩들(106a, 106b)은 이러한 기판(102) 상면에 부착된 접착제(124)의 상면에 적어도 둘 이상 배치된다.At least two
이때, 이러한 제1반도체 칩들(106a, 106b)은 서로 이격되거나 또는 맞닿도록 플래나(Planar) 스택 타입으로 배치된다.In this case, the
또한, 이러한 제1반도체 칩들(106a, 106b)은 각각 상면에 배치된 제1본딩패드들(108a, 108b)을 포함한다.In addition, each of the
이때, 이러한 제1본딩패드들(108a, 108b)은 에지(Edge) 패드 타입을 포함할 수 있으며, 또한, 이러한 제1본딩패드들(108a, 108b)이 센터(Center) 패드 타입일 경우, 재배선(RDL : Redistrubution Layer)이 이용되어 칩 가장자리 부분으로 배치될 수 있다.In this case, the
제1접속 부재(114)는 서로 이격되거나 또는 맞닿도록 배치된 제1반도체 칩들(106a, 106b)의 내측에 배치된 각 제1본딩패드들(108a, 108b) 간을 전기적으로 연결한다.The
여기서, 이러한 제1반도체 칩들(106a, 106b)의 각 제1본딩패드들(108a, 108b) 간을 전기적으로 연결하는 제1접속 부재(114)는 예를 들면 전도성 폴리머(Polymer)를 포함한다.Here, the
제2반도체 칩들(110a, 110b)은 접착제(124)를 매개로 하여 이러한 각각의 제1반도체 칩들(106a, 106b) 상에 적어도 둘 이상 배치된다.At least two
이때, 이러한 제2반도체 칩들(110a, 110b)은 제1반도체 칩들(106a, 106b) 상에 부착된 접착제(124)의 상면에 서로 이격되거나 또는 맞닿도록 수직적인 스택 타입으로 배치된다.In this case, the
또한, 이러한 제2반도체 칩들(110a, 110b)은 각각 상면에 배치된 제2본딩패 드들(112a, 112b)을 포함한다.In addition, the
이때, 이러한 제2본딩패드들(112a, 112b)은 에지(Edge) 패드 타입을 포함할 수 있으며, 또한, 이러한 제2본딩패드들(112a, 112b)은 센터(Center) 패드 타입일 경우, 재배선(RDL : Redistrubution Layer)이 이용되어 칩 가장자리 부분으로 배치될 수 있다.In this case, the
한편, 스택된 제1반도체 칩들(106a, 106b) 및 제2반도체 칩들(110a, 110b)은 각각 동일하거나 또는 서로 상이한 종류의 칩으로 이루어질 수 있다.Meanwhile, the stacked
제2접속 부재(116)는 서로 이격되거나 또는 맞닿도록 배치된 제2반도체 칩들(110a, 110b)의 내측의 각 제2본딩패드들(112a, 112b) 간을 전기적으로 연결한다.The
여기서, 이러한 제2반도체 칩들(110a, 110b)의 각 제2본딩패드들(112a, 112b) 간을 전기적으로 연결하는 제2접속 부재(116)는 예를 들면 전도성 폴리머(Polymer)를 포함한다.Here, the
제3접속 부재(118)는 이러한 제2반도체 칩들(110a, 110b)의 제2본딩패드들(112a, 112b), 제1반도체 칩들(106a, 106b)의 제1본딩패드들(108a, 108b) 및 기판(102)의 본드핑거(104) 간을 상호 전기적으로 연결한다.The
이때, 이러한 제2반도체 칩들(110a, 110b)의 제2본딩패드들(112a, 112b), 제1반도체 칩들(106a, 106b)의 제1본딩패드들(108a, 108b) 및 기판(102)의 본드핑거(104) 간을 상호 전기적으로 연결하는 제3접속 부재(118)는 전술한 제1 및 제2접속 부재(114, 116)와 동일하게 전도성 폴리머(Polymer)를 포함한다.At this time, the
한편, 제3접속 부재(118)는 각 반도체 칩들(106a, 106b, 110a, 110b)를 관통하여 기판(102)의 본드핑거(104)와 전기적으로 연결되는 관통 전극(126)을 포함할 수 있다.The
봉지 부재(120)는 제1반도체 칩들(106a, 106b), 제2반도체 칩들(110a, 110b) 및 제1, 제2 및 제3접속 부재(114, 116, 118)를 외부의 스트레스로부터 보호하기 위해 이러한 제1반도체 칩들(106a, 106b), 제2반도체 칩들(110a, 110b) 및 제1, 제2 및 제3접속 부재(114, 116, 118)를 포함하는 기판(102)의 상면을 덮도록 밀봉된다.The
이러한 봉지 부재(120)는 예를 들면 EMC(Epoxy Molding Compound)를 포함한다.The
외부 접속 단자(122)는 기판(102) 타면의 볼 랜드(도시안됨)에 실장 수단으로서 다수 개 부착되며, 이러한 실장 수단으로서 다수 개 부착된 외부 접속 단자(122)는 예를 들면 솔더 볼을 포함한다.A plurality of
한편, 도 2는 본 발명의 다른 실시예에 따른 스택 패키지를 설명하기 위해 도시한 단면도로서, 본 발명의 다른 실시예에 따른 스택 패키지(200)는, 전술한 본 발명의 실시예에 따른 스택 패키지(100)와 거의 유사하며, 다만, 각 반도체 칩들(206a, 210b) 간 및 각 반도체 칩들(206a, 210b)과 기판(202) 간을 전기적으로 연결하는 제1, 제2 및 제3접속 부재(224)가 전도성 테이프로 형성될 수 있다.2 is a cross-sectional view illustrating a stack package according to another embodiment of the present invention. The
또한, 도 3은 본 발명의 또 다른 실시예에 따른 스택 패키지를 설명하기 위해 도시한 단면도로서, 본 발명의 다른 실시예에 따른 스택 패키지(300)는, 전술한 본 발명의 실시예에 따른 스택 패키지(100) 및 본 발명의 다른 실시예에 따른 스택 패키지(200)와 거의 유사하며, 다만, 각 반도체 칩들(306a, 310b)과 기판(302) 간을 전기적으로 연결하는 제3접속 부재가 각 반도체 칩들(306a, 310b) 내에 형성된 관통 전극(326)을 포함할 수 있다.3 is a cross-sectional view illustrating a stack package according to another embodiment of the present invention. The
이하의 나머지 구성 요소는 전술한 본 발명의 실시예에 따른 스택 패키지(100)와 동일하며, 여기서는 그 설명은 생략하도록 한다.The remaining components are the same as the
전술한 바와 같이 본 발명은, 상기와 같이 플래나 구조 및 수직적 구조를 동시에 내부에 구현하여 스택 패키지를 형성함으로써, 종래의 수직적 구조만을 갖는 스택 패키지보다 그의 용량을 향상시킬 수 있음과 아울러, 전체 패키지의 두께를 감소시킬 수 있다.As described above, the present invention, by implementing a planar structure and a vertical structure at the same time as described above to form a stack package, it is possible to improve its capacity than the stack package having a conventional vertical structure, as well as the entire package Can reduce the thickness.
이상, 전술한 본 발명의 실시예들에서는 특정 실시예에 관련하고 도시하고 설명하였지만, 본 발명이 그에 한정되는 것은 아니며, 이하의 특허청구의 범위는 본 발명의 정신과 분야를 이탈하지 않는 한도 내에서 본 발명이 다양하게 개조 및 변형될 수 있다는 것을 당 업계에서 통상의 지식을 가진 자가 용이하게 알 수 있다.In the above-described embodiments of the present invention, the present invention has been described and described with reference to specific embodiments, but the present invention is not limited thereto, and the scope of the following claims is not limited to the scope of the present invention. It will be readily apparent to those skilled in the art that the present invention may be variously modified and modified.
도 1은 본 발명의 실시예에 따른 스택 패키지를 설명하기 위해 도시한 단면도.1 is a cross-sectional view illustrating a stack package according to an embodiment of the present invention.
도 2는 본 발명의 다른 실시예에 따른 스택 패키지를 설명하기 위해 도시한 단면도.2 is a cross-sectional view illustrating a stack package according to another embodiment of the present invention.
도 3은 본 발명의 또 다른 실시예에 따른 스택 패키지를 설명하기 위해 도시한 단면도.3 is a cross-sectional view illustrating a stack package according to another embodiment of the present invention.
Claims (7)
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