JP2017076656A - 半導体装置および複合シート - Google Patents
半導体装置および複合シート Download PDFInfo
- Publication number
- JP2017076656A JP2017076656A JP2015202137A JP2015202137A JP2017076656A JP 2017076656 A JP2017076656 A JP 2017076656A JP 2015202137 A JP2015202137 A JP 2015202137A JP 2015202137 A JP2015202137 A JP 2015202137A JP 2017076656 A JP2017076656 A JP 2017076656A
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- Prior art keywords
- semiconductor
- protective layer
- semiconductor device
- soft magnetic
- sheet
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Abstract
Description
上記半導体基板は、回路面を構成する第1の面と、上記第1の面とは反対側の第2の面とを有する。
上記保護層は、軟磁性粒子を含有する複合材料の単一層で構成され、上記第2の面に接着される接着面を有する。
上記半導体素子は、回路面を構成する第1の面と、上記第1の面とは反対側の第2の面とを有し、上記配線基板に搭載される。
上記保護層は、軟磁性粒子を含有する複合材料の単一層で構成され、上記第2の面に接着される接着面を有する。
また、保護層が単一層で構成されているため、半導体装置がスタック構造を有する場合においても、半導体素子と半導体パッケージ部品との間の電磁的なクロストークを抑制しつつ、半導体装置の薄型化を図ることが可能となる。
上記第2の半導体素子は、上記第1の半導体素子の上に配置され、上記第1の半導体素子と電気的に接続される。
上記接着層は、軟磁性粒子を含有する非導電性複合材料で構成され、上記第1の半導体素子と上記第2の半導体素子との間に配置される。
上記保護層は、軟磁性粒子を含有する複合材料の単一層で構成され、上記第2の面に接着される接着面を有する。
上記支持シートは、上記保護層の上記接着面とは反対側の表面に剥離可能に貼着される。
図1は本発明の一実施形態に係る半導体装置100の構成を示す概略側断面図である。
図において、X軸、Y軸及びZ軸は、相互に直交する3軸方向を示しており、Z軸方向は、半導体装置100の高さ方向(厚さ方向)に相当する。
半導体装置100は、ウエハレベルで作製されたチップサイズパッケージ(WLCSP)で構成される。半導体素子10は、半導体基板11と、この半導体基板11の回路面を構成する表面(第1の面)に形成された配線層12と、配線層12に接続された複数のバンプ13とを有する。
保護層20は、半導体基板11の裏面(第2の面)に設けられる半導体用保護フィルムを構成する。保護層20は、半導体基板11の裏面に設けられることで、半導体基板11の剛性(抗折強度)の向上、半導体基板11の裏面の保護、半導体基板11の品種の表示、半導体基板11の反りの抑制、半導体基板11から放射され又は半導体基板11へ侵入する電磁ノイズの吸収等、種々の機能を発揮するように構成される。
軟磁性粒子としては、軟磁気特性を有する磁性材料の粉末であれば特に限定されず、合金系、酸化物系、アモルファス系などの種々の磁性材料の粉末が採用可能である。
一方、接着樹脂の樹脂成分としては、熱硬化性成分及びエネルギー線硬化性成分の少なくとも1種とバインダーポリマー成分とを含む。
保護層20は、保護層20の熱拡散率を向上させる熱伝導性の無機フィラーをさらに含有してもよい。
剥離シートS1は、保護層20の接着面201を被覆するように設けられ、保護層20の使用時には、接着面201から剥離される。
支持シートS2は、保護層20の接着面201とは反対側の表面202に剥離可能に貼着され、保護層20を半導体基板11へ貼付する際の支持体としての役割を持つ。
続いて、半導体装置100の製造方法について説明する。
Rtp=-10log10{10S21/10/(1-10S11/10)}
の式を用い、Rtp(伝送減衰率)を算出した。その結果、測定周波数5GHzのときでRtpの値は24.4であった。
図7は、本発明の第2の実施形態に係る半導体装置200の構成を示す概略側断面図である。
図8は、本発明の第3の実施形態に係る半導体装置300の構成を示す概略側断面図である。
図9は、本発明の第4の実施形態に係る半導体装置400の構成を示す概略側断面図である。
11…半導体基板
20,20A,20B,20C…保護層
20D…接着層
100,200,300,400…半導体装置
140,401,402…複合シート
201…接着面
C1〜C7…半導体チップ
P11,P12,P21,P22…半導体パッケージ
Claims (10)
- 回路面を構成する第1の面と、前記第1の面とは反対側の第2の面とを有する半導体基板と、
軟磁性粒子を含有する複合材料の単一層で構成され、前記第2の面に接着される接着面を有する保護層と
を具備する半導体装置。 - 請求項1に記載の半導体装置であって、
前記複合材料は、前記軟磁性粒子を含有する接着樹脂の硬化物で構成される
半導体装置。 - 請求項1又は2に記載の半導体装置であって、
前記保護層は、熱伝導性粒子をさらに含有する
半導体装置。 - 配線基板と、
回路面を構成する第1の面と、前記第1の面とは反対側の第2の面とを有し、前記配線基板に搭載された半導体素子と、
軟磁性粒子を含有する複合材料の単一層で構成され、前記第2の面に接着される接着面を有する保護層と
を具備する半導体装置。 - 請求項4に記載の半導体装置であって、
前記配線基板に電気的に接続される半導体パッケージ部品をさらに具備し、
前記半導体素子は、前記配線基板と前記半導体パッケージ部品との間に配置される
半導体装置。 - 第1の半導体素子と、
前記第1の半導体素子の上に配置され、前記第1の半導体素子と電気的に接続される第2の半導体素子と、
軟磁性粒子を含有する非導電性複合材料で構成され、前記第1の半導体素子と前記第2の半導体素子との間に配置された接着層と
を具備する半導体装置。 - 半導体基板の回路面を構成する第1の面とは反対側の第2の面に接合される複合シートであって、
軟磁性粒子を含有する複合材料の単一層で構成され、前記第2の面に接着される接着面を有する保護層と、
前記保護層の前記接着面とは反対側の表面に剥離可能に貼着される支持シートと
を具備する複合シート。 - 請求項7に記載の複合シートであって、
前記支持シートは、ダイシングシートで構成される
複合シート。 - 請求項7又は8に記載の複合シートであって、
前記保護層は、熱伝導性の無機フィラーをさらに含有する
複合シート。 - 請求項9に記載の複合シートであって、
前記無機フィラーは、前記保護層の厚み方向と略同一の長軸方向を有する異方形状粒子を含む
複合シート。
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US15/765,184 US20180240758A1 (en) | 2015-10-13 | 2016-10-07 | Semiconductor apparatus and composite sheet |
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CN108235784B (zh) | 2021-05-25 |
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