JP2010192653A - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP2010192653A JP2010192653A JP2009035114A JP2009035114A JP2010192653A JP 2010192653 A JP2010192653 A JP 2010192653A JP 2009035114 A JP2009035114 A JP 2009035114A JP 2009035114 A JP2009035114 A JP 2009035114A JP 2010192653 A JP2010192653 A JP 2010192653A
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- 229920005989 resin Polymers 0.000 claims abstract description 41
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
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- 229920000877 Melamine resin Polymers 0.000 description 2
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
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Abstract
【解決手段】第1の回路基板3の側端面に配線電極7が露出するように配設される。第1の回路基板3にICチップを含む半導体部品1並びに電子部品2Aおよび2Bが実装される。半導体部品1並びに電子部品の少なくとも一部を覆うように樹脂からなるモールド体5が形成される。モールド体5の表面を、導電性材料からなる被覆部6が多い、その被覆部6が、配線電極7と接触するように形成される。
【選択図】図1
Description
そのような補強構造の一例として、特許文献1に記載のICパッケージの補強構造がある。この補強構造においては、マザーボードに実装されたICパッケージを覆うように筐体状の補強用フレームを配置し、その補強用フレームの内部に熱硬化性樹脂を注入し、これによりICパッケージの本体と、ICパッケージとマザーボードとの接続部とを樹脂により固めて補強している(特許文献1の図1参照)。
本発明は、上記問題点に鑑みてなされたものであり、放熱性に優れた実装構造を備える半導体装置を提供することを目的としている。
前記第1の回路基板に実装された、ICチップを含む半導体部品並びに電子部品と、
前記半導体部品並びに電子部品の少なくとも一部を覆う、樹脂からなるモールド体と、
導電性材料からなり、前記モールド体の表面を被覆する被覆部とを備え、
前記被覆部が、前記第1の回路基板の側端面に露出された配線電極と接触するように形成された半導体装置である。
前記被覆部は、前記半導体部品の露出した一部分と前記モールド体の表面とを被覆している。
前記被覆部が、前記第2の回路基板の配線電極と接触するように形成される。
《実施の形態1》
図1に、本発明の実施の形態1に係る半導体装置の概略構成を示す。同図においては、半導体装置の一部のみを断面にしてある。
図示例の半導体装置は、ICパッケージ1、並びに電子部品2Aおよび2Bを第1の回路基板3に実装し、その第1の回路基板3をさらに第2の回路基板4に実装して構成されている。ICパッケージ1、並びに電子部品2Aおよび2Bは、第1の回路基板3上で樹脂のモールド体5で固めるようにして封止されている。モールド体5は、表面が、熱伝導性の良好な導電性材料からなる被覆部6により覆われている。なお、図1においては、モールド体5および被覆部6のみが断面とされている。
まず、図2Aに示すように、基板素材に複数の第1の回路基板3を連続的に形成する。次に、基板素材上のそれぞれの第1の回路基板3に、半導体装置のICパッケージ1と、電子部品2Aおよび2Bとを実装する。そして、1組のICパッケージ1並びに電子部品2Aおよび2Bを1つのモールド体5によりそれぞれ包み込むように、例えば真空印刷法によりモールド体5の材料の樹脂を基板素材に塗工する。このとき、印刷装置の真空状態を解除することで、モールド体5の材料である樹脂が、ICパッケージ1等の下側に充填される。その結果、ICパッケージ1等を覆う樹脂の不足する箇所が生じる。このため、再度真空印刷法により樹脂をスキージングして、不足分の樹脂を補う。
なお、図示例においては、被覆部6は、印刷法により形成するものとしたが、スパッタリングまたは真空蒸着法により被覆部6を形成するものとしてもよい。
したがって、ICパッケージ1のみならず、電子部品2Aおよび2Bをも含めて封止を行う場合にも、十分な放熱性を備えた半導体装置を得ることができる。
次に、本発明の実施の形態2を説明する。実施の形態2は、実施の形態1を改変したものであり、以下に、実施の形態1とは異なる部分を主に説明する。
図3に、実施の形態2の半導体装置の概略構成を示す。同図においては、モールド体5および被覆部6のみを断面にしてある。
実施の形態2の半導体装置においては、ICパッケージ1の一部(図示例では上面)がモールド体5により覆われてはおらず、その露出部分が被覆部6と直接に接している。このように、被覆部6をICパッケージ1の一部と直接に接触するように形成することによって、放熱性が更に良好となる。
まず、図4Aに示すように、基板素材に複数の第1の回路基板3を連続的に形成する。次に、基板素材上のそれぞれの第1の回路基板3に、半導体装置のICパッケージ1と、電子部品2Aおよび2Bとを実装する。そして、1組のICパッケージ1並びに電子部品2Aおよび2Bを1つのモールド体5によりそれぞれ包み込むように、例えば真空印刷法によりモールド体5の材料の樹脂を基板素材に塗工する。このとき、印刷装置の真空状態を解除することで、モールド体5の材料である樹脂が、ICパッケージ1等の下側に充填される。その結果、ICパッケージ1等を覆う樹脂の不足する箇所が生じる。このため、再度真空印刷法により樹脂をスキージングして、不足分の樹脂を補う。
なお、図示例においては、被覆部6は、印刷法により形成するものとしたが、スパッタリングまたは真空蒸着法により被覆部6を形成するものとしてもよい。また、ICパッケージ1の一部のみをモールド体5から露出させて、被覆部6と接触させるものとしたが、必要に応じて、電子部品2Aおよび2Bの一部をモールド体5から露出させるようにモールド体5を研磨して、その部分をも被覆部6と接触させるようにしてもよい。
次に、本発明の実施の形態3を説明する。実施の形態3は、実施の形態2をさらに改変したものであり、以下に、実施の形態2とは異なる部分を主に説明する。
図5に、実施の形態3の半導体装置の概略構成を示す。同図においては、モールド体5および被覆部6のみを断面にしてある。
実施の形態3の半導体装置においては、被覆部6が、第2の回路基板4にまで達し、第2の回路基板4の表面に露出した、図示しない配線電極と接触するように形成されている。
まず、図6Aに示すように、基板素材に複数の第1の回路基板3を連続的に形成する。次に、基板素材上のそれぞれの第1の回路基板3に、半導体装置のICパッケージ1と、電子部品2Aおよび2Bとを実装する。そして、1組のICパッケージ1並びに電子部品2Aおよび2Bを1つのモールド体5によりそれぞれ包み込むように、例えば真空印刷法によりモールド体5の材料の樹脂を基板素材に塗工する。このとき、印刷装置の真空状態を解除することで、モールド体5の材料である樹脂が、ICパッケージ1等の下側に充填される。その結果、ICパッケージ1等を覆う樹脂の不足する箇所が生じる。このため、再度真空印刷法により樹脂をスキージングして、不足分の樹脂を補う。
その後、図6Dに示すように、第2の回路基板4にまで達する被覆部6を形成するように、上述した導電性材料を真空印刷法により塗工する。このとき、第2の回路基板4の配線電極と接触するように被覆部6を形成する。またこのとき、印刷装置の真空状態を解除することで導電性材料は、モールド体5の表面の凹凸に充填される。その結果、モールド体5を覆う導電性材料の不足する箇所が生じるので、それを補うために、再度導電性材料のスキージングを行う。以上のようにして、第2の回路基板4の配線電極と接触するように被覆部6が形成される。したがって、第2の回路基板4をも介してICパッケージ1等の発熱を放熱することができるので、半導体装置の放熱性がさらに良好となる。
2 電子部品
3 第1の回路基板
4 第2の回路基板
5 モールド体
6 被覆部
7 配線電極
Claims (10)
- 側端面に配線電極が露出するように配設された第1の回路基板と、
前記第1の回路基板に実装された、ICチップを含む半導体部品並びに電子部品と、
前記半導体部品並びに電子部品の少なくとも一部を覆う、樹脂からなるモールド体と、
導電性材料からなり、前記モールド体の表面を被覆する被覆部とを備え、
前記被覆部が、前記第1の回路基板の側端面に露出された配線電極と接触するように形成された半導体装置。 - 前記第1の回路基板の側端面に露出された配線電極が、グランド用の配線電極である請求項1記載の半導体装置。
- 前記モールド体が、前記半導体部品の前記第1の回路基板との接続部分を封止している請求項1または2記載の半導体装置。
- 前記被覆部が、前記半導体部品並びに電子部品の少なくとも一部と接触するように形成された請求項1〜3のいずれかに記載の半導体装置。
- 前記半導体部品は、一部分を露出させて残部が前記モールド体により覆われており、
前記被覆部は、前記半導体部品の露出した一部分と前記モールド体の表面とを被覆している請求項4記載の半導体装置。 - 前記第1の回路基板が実装される、配線電極を有する第2の回路基板を更に備え、
前記被覆部が、前記第2の回路基板の配線電極と接触するように形成された請求項1〜5のいずれかに記載の半導体装置。 - 前記被覆部が、前記第2の回路基板の前記第1の回路基板が実装される面に露出した配線電極と接触するように形成される請求項6記載の半導体装置。
- 前記第1の回路基板の前記第2の回路基板との接続部分が、樹脂により封止されている請求項1〜7のいずれかに記載の半導体装置。
- 前記被覆部が、洋白、ステンレス鋼、銅、鉄、およびアルミニウムの少なくとも1種から構成された請求項1〜8のいずれかに記載の半導体装置。
- 前記被覆部が、導電性樹脂から構成された請求項1〜8のいずれかに記載の半導体装置。
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