JP2007214535A - 半導体素子内蔵プリント配線板及びその製造方法 - Google Patents
半導体素子内蔵プリント配線板及びその製造方法 Download PDFInfo
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Abstract
【解決手段】内蔵された半導体素子102の少なくとも下面、上面又は側面が絶縁膜106で覆われていると共に、当該半導体素子の側方及び上方に絶縁層108が形成されている半導体素子内蔵プリント配線板100;ベース基板101に半導体素子を搭載し、該半導体素子の少なくとも下面、上面又は側面を絶縁膜で覆う工程と、前記半導体素子の側方に半硬化状態の絶縁シートを配置し積層する工程と、前記半導体素子の上方に半硬化状態の絶縁シートを配置し積層する工程とを有する半導体素子内蔵プリント配線板の製造方法。
【選択図】図1
Description
まず、図9(A)を用いて上記従来の半導体素子内蔵プリント配線板の第1の問題点について説明する。当該図9(A)に示される半導体素子内蔵プリント配線板600は、ベース基板601に半導体素子602をワイヤーボンディング603接続した後、当該ワイヤーボンディング603を含め、半導体素子602を封止材604で封止して構成されている。しかし、封止材604は、半導体素子602と有機基板である側方及び上層の配線層605との線膨張係数を緩和するために無機フィラーを多く含み、樹脂分が少ない組成となっているため、回路を形成するときのデスミア処理で、封止材604の表面のみ粗化が過剰になり易く、後工程での熱履歴などで配線回路と封止材604の密着性が弱く剥離し易いという問題点が発生していた。図9(B)は斯かる配線回路が剥離606した状態を示す断面図である。
しかし、封止材703の充填量を調節して、少なめに充填すると、上層の配線層との間に隙間704が生じ、表面実装部品を実装の際リフローなどによる加熱で隙間が膨張し、クラックや上層の配線基板が図10(B)に示されるように剥離705する問題が発生していた。
その上、研磨工程が増えるばかりか、封止材の材質と側方の配線基板の材質が異なるため、均一に研磨することが困難であり、図11(B)に示されるように、封止材801表面に凹凸802が出来易いという問題も発生していた。
また、本発明において、半硬化状態の絶縁シートを使用し、半導体素子の周囲の隙間を第2絶縁膜で埋めることで、第1絶縁膜の近傍まで層間接続ビアを形成することも可能となる。
さらに、封止材の充填不足や過多の問題も解消し得る。
3層のベース基板101がビルドアップ基板で形成されており、半導体素子102を搭載する面には、実装パッド103以外を保護する保護膜104が形成されている。はんだ105によるフリップチップ接合にて半導体素子102がベース基板101に接続され、少なくとも第1絶縁膜106が、ベース基板101側、すなわち半導体素子102下面とベース基板101の接続端子面に、アンダーフィルによる封止材の充填により形成されている。半導体素子102の側方と上方には、半硬化状態の絶縁シートの積層により絶縁層107が形成されていると共に、当該積層の際の熱で溶融した絶縁樹脂によって半導体素子102の周囲及び第1絶縁膜106の周囲の隙間が第2絶縁膜108で埋められている。
第1絶縁膜106は、半導体素子102であるシリコンと有機基板の線膨張係数を緩和するために無機フィラーの充填量が多く、樹脂分が少ない。したがって、第2絶縁膜108で半導体素子102及び第1絶縁膜106を覆うことで側方あるいは上方の絶縁層107との密着性が悪くなるという問題点も解決している。
因に、上記相違点は、当該半導体素子202がフリップチップ接続ではなく、ワイヤーボンディング203接続されていることに起因する。
また、フィリップチップ接続法としては、Auはんだ接合、はんだ接合、Au・超音波接合、Au・ACF接合などが挙げられる。
また、フィリップチップ接続法としては、Auはんだ接合、はんだ接合、Au・超音波接合、Au・ACF接合などが挙げられる。
ここで半硬化状態の熱硬化性絶縁シート500としては、ガラスクロスにエポキシ樹脂を含浸したプリプレグ材や熱硬化性樹脂に無機フィラーなどを充填したビルドアップ基材を用いても構わない。また、RCCなどの樹脂付き銅箔を使用しても構わない。
また、フィリップチップ接続法としては、Auはんだ接合、はんだ接合、Au・超音波接合などが挙げられる。
ここで、はんだボール114は、表裏どちらの面に形成しても構わない。
また、当該半導体素子502の下方部には受動部品(図示せず)を搭載することができる。
101、201、306、404、601:ベース基板
102、202、307、405、502、602、701:半導体素子
103:実装パッド
104、305、403:保護膜
105、308、406:はんだ
106、204、309、407、505:第1絶縁膜
107:絶縁層
108、205、311、410、508:第2絶縁膜
109:ビルドアップ層
110、302、304、313、402、412、509
512、514:配線回路
111:層間接続ビア
112、312、411、511:貫通スルーホール
113、316、415、515:ソルダーレジスト
114、317、416、516:はんだボール
115:受動部品
203、603、702:ワイヤーボンディング
300、400:両面銅張積層板
301、401:非貫通穴
303:ビルドアップ基材
310、314、408、413、500、506、510、513:半硬化状態の絶縁シート
315、414:微細配線回路
409:両面基板
311、501、507:銅箔
503:開口部(半導体素子実装用)
604、703、801:封止材
605:配線層
606、705:剥離
704:隙間
802:凹凸
Claims (16)
- 内蔵された半導体素子の少なくとも下面、上面又は側面が絶縁膜で覆われていると共に、当該半導体素子の側方及び上方に絶縁層が形成されていることを特徴とする半導体素子内蔵プリント配線板。
- 前記側方の絶縁層が、プリプレグ材又はビルドアップ基材からなることを特徴とする請求項1記載の半導体素子内蔵プリント配線板。
- 前記上方の絶縁層がプリプレグ材又はビルドアップ基材からなることを特徴とする請求項1又は2記載の半導体素子内蔵プリント配線板。
- 前記内蔵された半導体素子の上面及び側面が第1絶縁膜で覆われていると共に、当該第1絶縁膜が線膨張係数の異なる第2絶縁膜で覆われていることを特徴とする請求項1〜3の何れか1項記載の半導体素子内蔵プリント配線板。
- 前記内蔵された半導体素子の全面が、線膨張係数が異なる第1絶縁膜と第2絶縁膜で覆われていることを特徴とする請求項1〜3の何れか1項記載の半導体素子内蔵プリント配線板。
- 前記第1絶縁膜が、前記半導体素子の下面又は上面を覆っていると共に、前記第2絶縁膜が、前記半導体素子の側面及び/又は上面を覆っていることを特徴とする請求項5記載の半導体素子内蔵プリント配線板。
- 前記第1絶縁膜が、封止材により形成されたものであることを特徴とする請求項4〜6の何れか1項記載の半導体素子内蔵プリント配線板。
- 前記第2絶縁膜が、前記側方の絶縁層が溶融した樹脂により形成されたものであることを特徴とする請求項4〜7の何れか1項記載の半導体素子内蔵プリント配線板。
- 前記第2絶縁膜が、前記側方及び上方の絶縁層が溶融した樹脂により形成されたものであることを特徴とする請求項4〜7の何れか1項記載の半導体素子内蔵プリント配線板。
- 前記内蔵された半導体素子の下方部に受動部品が配置されていることを特徴とする請求項1〜9の何れか1項記載の半導体素子内蔵プリント配線板。
- 前記受動部品が、内蔵された半導体素子と層間接続ビアを介して接続されていることを特徴とする請求項10記載の半導体素子内蔵プリント配線板。
- 前記受動部品が、抵抗、コンデンサ、コイル、インダクタの何れか1つ又は2つ以上の組み合わせであることを特徴とする請求項10又は11記載の半導体素子内蔵プリント配線板。
- ベース基板に半導体素子を搭載し、該半導体素子の少なくとも下面、上面又は側面を絶縁膜で覆う工程と、前記半導体素子の側方に半硬化状態の絶縁シートを配置し積層する工程と、前記半導体素子の上方に半硬化状態の絶縁シートを配置し積層する工程とを有することを特徴とする半導体素子内蔵プリント配線板の製造方法。
- ベース基板に半導体素子を搭載し、該半導体素子の下面又は上面を第1絶縁膜で覆う工程と、前記半導体素子の側方に半硬化状態の絶縁シートを配置する工程と、前記半導体素子の上方に半硬化状態の絶縁シートを配置する工程と、前記側方及び上方の半硬化状態のシートを同時に積層して半導体素子の側面及び/又は上面を第2絶縁層で覆う工程とを有することを特徴とする半導体素子内蔵プリント配線板の製造方法。
- 前記側方に配置された半硬化状態の絶縁シートが、半導体素子に対応した開口部を備えていることを特徴とする請求項13又は14記載の半導体素子内蔵プリント配線板の製造方法。
- 前記半導体素子を、はんだで接合することを特徴とする請求項13〜15の何れか1項記載の半導体素子内蔵プリント配線板の製造方法。
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JP2006280930A JP5114041B2 (ja) | 2006-01-13 | 2006-10-16 | 半導体素子内蔵プリント配線板及びその製造方法 |
PCT/JP2006/323699 WO2007080713A1 (ja) | 2006-01-13 | 2006-11-28 | 半導体素子内蔵プリント配線板及びその製造方法 |
CN2006800197140A CN101189717B (zh) | 2006-01-13 | 2006-11-28 | 内装半导体元件的印刷布线板及其制造方法 |
KR1020077028717A KR101102220B1 (ko) | 2006-01-13 | 2006-11-28 | 반도체소자 내장 프린트 배선판 및 그 제조 방법 |
US11/913,559 US7894200B2 (en) | 2006-01-13 | 2006-11-28 | Printed wiring board with built-in semiconductor element, and process for producing the same |
TW095147103A TWI387409B (zh) | 2006-01-13 | 2006-12-15 | 內建半導體元件之印刷布線板及其製造方法 |
HK08112926.6A HK1123886A1 (en) | 2006-01-13 | 2008-11-26 | Printed wiring board with built-in semiconductor element, and process for producing the same |
US12/966,251 US8035979B2 (en) | 2006-01-13 | 2010-12-13 | Printed wiring board with built-in semiconductor element, and process for producing the same |
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JP2006005582 | 2006-01-13 | ||
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JP2006280930A JP5114041B2 (ja) | 2006-01-13 | 2006-10-16 | 半導体素子内蔵プリント配線板及びその製造方法 |
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JP (1) | JP5114041B2 (ja) |
KR (1) | KR101102220B1 (ja) |
CN (1) | CN101189717B (ja) |
HK (1) | HK1123886A1 (ja) |
TW (1) | TWI387409B (ja) |
WO (1) | WO2007080713A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
US20090129037A1 (en) | 2009-05-21 |
KR101102220B1 (ko) | 2012-01-05 |
TW200806108A (en) | 2008-01-16 |
US20110090657A1 (en) | 2011-04-21 |
HK1123886A1 (en) | 2009-06-26 |
WO2007080713A1 (ja) | 2007-07-19 |
CN101189717B (zh) | 2011-06-15 |
TWI387409B (zh) | 2013-02-21 |
JP5114041B2 (ja) | 2013-01-09 |
CN101189717A (zh) | 2008-05-28 |
KR20080081220A (ko) | 2008-09-09 |
US7894200B2 (en) | 2011-02-22 |
US8035979B2 (en) | 2011-10-11 |
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