JP2016219707A - 半導体装置及びその製造方法 - Google Patents
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Abstract
【解決手段】 絶縁回路基板13と、前記絶縁回路基板に実装される半導体素子17と、前記絶縁回路基板に積層された第1絶縁樹脂層21と、前記第1絶縁樹脂層に形成される前記半導体素子に接触可能な窓部を介して、該半導体素子に接触する銅めっき配線11と、前記銅めっき配線を封止するように積層された第2絶縁樹脂層22と、を備えることを特徴とする半導体装置、並びにその製造方法を提供する。
【選択図】 図1
Description
本発明は、一実施形態によれば、半導体装置であって、絶縁回路基板と、前記絶縁回路基板に実装される半導体素子と、前記絶縁回路基板に積層された第1絶縁樹脂層と、前記第1絶縁樹脂層に形成される前記半導体素子に接触可能な窓部を介して、該半導体素子に接触する銅めっき配線と、前記銅めっき配線を封止するように積層された第2絶縁樹脂層とを備える。
さらに、本発明に係る半導体装置の製造方法によれば、半導体素子と絶縁回路基板とを接続する配線をめっき法により作成することができる。このめっき法による接合は、半導体素子にストレスを与えることがないため、半導体素子の薄ウエハ化を可能とすることができる。
11a、11b 銅めっき配線
111 シード層
112 銅めっき層
12a、12b、12c 外部接続端子
13 絶縁回路基板
14a、14b、14c 銅配線
15 絶縁層
16 金属層
17 半導体素子(デバイスチップ)
18 放熱体
19 接合層
21 第1絶縁樹脂層
22 第2絶縁樹脂層
Claims (9)
- 絶縁回路基板と、
前記絶縁回路基板に実装される半導体素子と、
前記絶縁回路基板に積層された第1絶縁樹脂層と、
前記第1絶縁樹脂層に形成される前記半導体素子に接触可能な窓部を介して、該半導体素子に接触する銅めっき配線と、
前記銅めっき配線を封止するように積層された第2絶縁樹脂層と、
を備えることを特徴とする半導体装置。 - 前記銅めっき配線が、シート状であることを特徴とする請求項1に記載の半導体装置。
- 前記銅めっき配線が、薄膜の金属または合金の層であるシード層と銅めっきにより該シード層に積層された銅めっき層とを含むことを特徴とする請求項1または2に記載の半導体装置。
- 前記シード層が、Cu、Ni、Al、Ag、Auから選択される1種類以上の金属または合金である、請求項3に記載の半導体装置。
- 前記第1絶縁樹脂層及び/または前記第2絶縁樹脂層が、ポリアミド樹脂、ポリイミド樹脂、エポキシ樹脂、ポリエーテルエーテルケトン樹脂、ポリベンゾイミダゾール樹脂から選択される1以上の樹脂であることを特徴とする請求項1から4のいずれか1項に記載の半導体装置。
- 絶縁回路基板に半導体素子を実装する工程と、
前記絶縁回路基板に第1絶縁樹脂層を積層する工程と、
前記第1絶縁樹脂層に形成される前記半導体素子に接触可能な窓部を介して、該半導体素子に接触する銅めっき配線を形成する工程と、
前記銅めっき配線を封止するように第2絶縁樹脂層を積層する工程と、
を含むことを特徴とする半導体装置の製造方法。 - 前記銅めっき配線を形成する工程が、
薄膜の金属または合金の層であるシード層を形成する工程と、
銅めっきにより前記シード層に銅めっき層を積層する工程と、
を含むことを特徴とする請求項6に記載の半導体装置の製造方法。 - 前記シード層を形成する工程が、スパッタもしくは無電解めっきにより行われることを特徴とする請求項7に記載の製造方法。
- 前記第1絶縁樹脂層を形成する工程が、
ポリアミド樹脂、ポリイミド樹脂、エポキシ樹脂、ポリエーテルエーテルケトン樹脂、ポリベンゾイミダゾール樹脂から選択される1以上の樹脂フィルムを、前記半導体素子を実装した前記絶縁回路基板に載置する工程と、
前記樹脂フィルムを溶かすことで、前記半導体素子の上の厚みが20μm以上となるように前記第1絶縁樹脂層を形成する工程と、
を含むことを特徴とする請求項6から8のいずれか1項に記載の半導体装置の製造方法。
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