JP2014022618A - 配線基板及びその製造方法、半導体パッケージ - Google Patents
配線基板及びその製造方法、半導体パッケージ Download PDFInfo
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Abstract
【解決手段】本配線基板は、補強部材を含む絶縁層と、前記補強部材を含む絶縁層の一方の面側から外部に露出する外部接続用パッドと、前記補強部材を含む絶縁層の他方の面に第1絶縁材料を主成分とする絶縁層が所定数積層された第1積層体と、前記第1積層体の前記補強部材を含む絶縁層とは反対側の面に前記第1絶縁材料を主成分とする絶縁層と同数積層された第2絶縁材料を主成分とする絶縁層を含む第2積層体と、前記第2積層体の前記第1積層体とは反対の面側から外部に露出する半導体チップ接続用パッドと、を有し、前記第1絶縁材料を主成分とする絶縁層の熱膨張係数は、前記第2絶縁材料を主成分とする絶縁層の熱膨張係数よりも大きい。
【選択図】図1
Description
[第1の実施の形態に係る配線基板の構造]
まず、第1の実施の形態に係る配線基板の構造について説明する。図1は、第1の実施の形態に係る配線基板を例示する断面図である。図1に示す配線基板10は、配線層11と、絶縁層12と、ガラスクロス13と、配線層14と、絶縁層15と、配線層16と、絶縁層17と、配線層18と、絶縁層19と、配線層20と、絶縁層21と、配線層22と、ソルダーレジスト層23とを有する。配線基板10は、コアレスのビルドアップ配線基板である。
次に、第1の実施の形態に係る配線基板の製造方法について説明する。図2及び図3は、第1の実施の形態に係る配線基板の製造工程を例示する図である。本実施の形態では、支持体上に複数の配線基板となる部分を作製し支持体を除去後個片化して各配線基板とする工程の例を示すが、支持体上に1個ずつ配線基板を作製し支持体を除去する工程としてもよい。
第1の実施の形態では、ソルダーレジスト層側が半導体チップ搭載側となる例を示した。第2の実施の形態では、ソルダーレジスト層側とは反対側が半導体チップ搭載側となる例を示す。なお、第2の実施の形態において、既に説明した実施の形態と同一構成部品についての説明は省略する。
まず、第2の実施の形態に係る配線基板の構造について説明する。図4は、第2の実施の形態に係る配線基板を例示する断面図である。図4に示す配線基板30は、配線層31と、絶縁層32と、配線層33と、絶縁層34と、配線層35と、絶縁層36と、配線層37と、絶縁層38と、配線層39と、絶縁層40と、ガラスクロス13と、配線層42と、ソルダーレジスト層43とを有する。配線基板30は、コアレスのビルドアップ配線基板である。
第2の実施の形態に係る配線基板は、第1の実施の形態に係る配線基板の製造方法とおおよそ同様の製造方法で製造できるため図示は省略するが、以下に簡単に説明する。
第3の実施の形態では、第1の実施の形態に係る配線基板10(図1参照)の第2積層体側に半導体チップを搭載した半導体パッケージの例を示す。なお、第3の実施の形態において、既に説明した実施の形態と同一構成部品についての説明は省略する。
第3の実施の形態の変形例では、第3の実施の形態に係る半導体パッケージ50(図5参照)に更に他の半導体パッケージを搭載したPOP構造(パッケージオンパッケージ構造)の半導体パッケージの例を示す。なお、第3の実施の形態の変形例において、既に説明した実施の形態と同一構成部品についての説明は省略する。
図1に示した配線基板10(実施例1とする)、図3(c)に示した個片化前の配線基板10(実施例2とする)、比較例に係る配線基板(比較例1とする)、及び個片化前の比較例に係る配線基板(比較例2とする)を作製し、反りの比較を行った。比較例1及び2は、絶縁層の熱膨張係数の設定のみが実施例1及び2と相違する。具体的には、以下の表1に示す通りである。
11、14、16、18、20、22、31、33、35、37、39、42 配線層
12、15、17、19、21、32、34、36、38、40 絶縁層
12x、15x、17x、19x、21x、32x、34x、36x、38x、40x ビアホール
12y、32y 凹部
13 ガラスクロス
23、43 ソルダーレジスト層
23x、43x 開口部
50、60、70 半導体パッケージ
51、62 半導体チップ
52 接合部
53 アンダーフィル樹脂
61 基板
63 パッド
64 ボンディングワイヤ
75 接合部
100 支持体
110 エッチング停止層
Claims (8)
- 補強部材を含む絶縁層と、
前記補強部材を含む絶縁層の一方の面側から外部に露出する外部接続用パッドと、
前記補強部材を含む絶縁層の他方の面に第1絶縁材料を主成分とする絶縁層が所定数積層された第1積層体と、
前記第1積層体の前記補強部材を含む絶縁層とは反対側の面に前記第1絶縁材料を主成分とする絶縁層と同数積層された第2絶縁材料を主成分とする絶縁層を含む第2積層体と、
前記第2積層体の前記第1積層体とは反対の面側から外部に露出する半導体チップ接続用パッドと、を有し、
前記第1絶縁材料を主成分とする絶縁層の熱膨張係数は、前記第2絶縁材料を主成分とする絶縁層の熱膨張係数よりも大きい配線基板。 - 前記第1絶縁材料及び前記第2絶縁材料は、各々エポキシ系の絶縁性樹脂であり、
前記第1絶縁材料を主成分とする絶縁層及び前記第2絶縁材料を主成分とする絶縁層は、各々フィラーを含有し、
前記第1絶縁材料を主成分とする絶縁層の前記フィラーの含有量は、前記第2絶縁材料を主成分とする絶縁層の前記フィラーの含有量よりも少ない請求項1記載の配線基板。 - 前記補強部材を含む絶縁層は、前記第1絶縁材料を主成分とする絶縁層と同一の絶縁性樹脂で形成され、
前記補強部材を含む絶縁層は、前記第1絶縁材料を主成分とする絶縁層と同一のフィラーを含有し、
前記補強部材を含む絶縁層の前記フィラーの含有量は、前記第2絶縁材料を主成分とする絶縁層の前記フィラーの含有量よりも少ない請求項2記載の配線基板。 - 前記補強部材を含む絶縁層の熱膨張係数は、前記第1絶縁材料を主成分とする絶縁層及び前記第2絶縁材料を主成分とする絶縁層の熱膨張係数よりも小さい請求項1乃至3の何れか一項記載の配線基板。
- 請求項1乃至4の何れか一項記載の配線基板の前記第2積層体側に半導体チップが搭載され、
前記半導体チップが接合部を介して前記半導体チップ接続用パッドと電気的に接続された半導体パッケージ。 - 基板上に他の半導体チップが実装された他の半導体パッケージが前記半導体チップの前記第2積層体とは反対側に配置され、
前記他の半導体チップが前記基板及び他の接合部を介して前記配線基板と電気的に接続された請求項5記載の半導体パッケージ。 - 支持体上に、外部接続用パッドを形成する工程と、
前記支持体上に、前記外部接続用パッドを覆うように、補強部材を含む絶縁層を形成する工程と、
前記補強部材を含む絶縁層上に、第1絶縁材料を主成分とする絶縁層が所定数積層された第1積層体を形成する工程と、
前記第1積層体上に、前記第1絶縁材料を主成分とする絶縁層と同数積層された第2絶縁材料を主成分とする絶縁層を含む第2積層体を形成する工程と、
前記第2積層体の前記第1積層体とは反対の面側から外部に露出する半導体チップ接続用パッドを形成する工程と、
前記支持体を除去する工程と、を有し、
前記第1絶縁材料を主成分とする絶縁層の熱膨張係数は、前記第2絶縁材料を主成分とする絶縁層の熱膨張係数よりも大きい配線基板の製造方法。 - 支持体上に、半導体チップ接続用パッドを形成する工程と、
前記支持体上に、前記半導体チップ接続用パッドを覆うように、第2絶縁材料を主成分とする絶縁層が所定数積層された第2積層体を形成する工程と、
前記第2積層体上に、前記第2絶縁材料を主成分とする絶縁層と同数積層された第1絶縁材料を主成分とする絶縁層を含む第1積層体を形成する工程と、
前記第1積層体上に、補強部材を含む絶縁層を形成する工程と、
前記補強部材を含む絶縁層上に、外部接続用パッドを形成する工程と、
前記支持体を除去する工程と、を有し、
前記第1絶縁材料を主成分とする絶縁層の熱膨張係数は、前記第2絶縁材料を主成分とする絶縁層の熱膨張係数よりも大きい配線基板の製造方法。
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