JP2016072493A - 半導体装置及びその製造方法 - Google Patents
半導体装置及びその製造方法 Download PDFInfo
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Abstract
【解決手段】本半導体装置は、配線基板と、前記配線基板上に設けられた下側磁気シールド材と、前記下側磁気シールド材上に搭載された、磁気記憶素子を有する半導体チップと、前記下側磁気シールド材との間に前記半導体チップを挟むように、前記半導体チップ上に設けられた、上側磁気シールド材と、を有し、前記下側磁気シールド材と前記上側磁気シールド材とが直接接している。
【選択図】図1
Description
[第1の実施の形態に係る半導体装置の構造]
まず、第1の実施の形態に係る半導体装置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半導体装置を例示する図であり、図1(b)は平面図であり、図1(a)は図1(b)のA−A線に沿う断面図である。但し、図1(b)において、モールド樹脂80の図示は省略されている。
次に、第1の実施の形態に係る半導体装置の製造方法について説明する。図2〜図7は、第1の実施の形態に係る半導体装置の製造工程を例示する図である。まず、図2に示す工程では、個片化されて配線基板10となる複数の領域Cを有するシート状の配線基板10Sを準備する。ここで、図2(b)は平面図であり、図2(a)は、図2(b)の破線で囲まれた領域Cのうちの1つを示す断面図である。なお、配線基板10Sの基本的な構造は前述の配線基板10と同様である。又、配線基板10Sは、例えば、周知のビルドアップ工法により作製できるが、他の方法で作製された層構造等の異なる配線基板を用いても構わない。
第2の実施の形態では、下側磁気シールド材と上側磁気シールド材とを、第1の実施の形態とは異なる方法で接続する例を示す。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についての説明は省略する場合がある。
まず、第2の実施の形態に係る半導体装置の構造について説明する。図8は、第2の実施の形態に係る半導体装置を例示する図であり、図8(b)は平面図であり、図8(a)は図8(b)のA−A線に沿う断面図である。但し、図8(b)において、モールド樹脂80の図示は省略されている。
次に、第2の実施の形態に係る半導体装置の製造方法について説明する。図9及び図10は、第2の実施の形態に係る半導体装置の製造工程を例示する図である。まず、第1の実施の形態の図2〜図4と同様の工程を実施する(但し、下側磁気シールド材20には開口部20xを形成しない)。
第1の実施の形態の変形例1では、一部の開口部20yとスリット20zとを一体化する例を示す。なお、第1の実施の形態の変形例1において、既に説明した実施の形態と同一構成部についての説明は省略する場合がある。
第1の実施の形態の変形例2では、半導体チップ40を配線基板10にフリップチップ接続する例を示す。なお、第1の実施の形態の変形例2において、既に説明した実施の形態と同一構成部についての説明は省略する場合がある。
このように、第1の実施の形態の変形例2では、半導体チップ40を配線基板10にフリップチップ接続している。この場合も、第1の実施の形態と同様に、金属からなる上側磁気シールド材70と下側磁気シールド材20とが半導体チップ40を上下から挟み、磁気の流れを阻害する材料(樹脂等)を介すことなく直接接している。そのため、第1の実施の形態と同様の効果を奏する。
第1の実施の形態の変形例3では、上側磁気シールド材のバリエーションについて示す。なお、第1の実施の形態の変形例3において、既に説明した実施の形態と同一構成部についての説明は省略する場合がある。
10、10S 配線基板
11、14 絶縁層
11x、14x ビアホール
12、13 配線層
15 パッド
16 表面処理層
17 ソルダーレジスト層
17x、20v、20x、20y、71x 開口部
20、20S 下側磁気シールド材
20p 位置決め孔
20t 吊部
20z スリット
30、30S、50 接着層
40 半導体チップ
60 ボンディングワイヤ
70、70A、70B、70C 上側磁気シールド材
71 天板
72、72A 脚部
73 折り曲げ部
74 側壁部
80 モールド樹脂
90 はんだバンプ
100 バンプ
110 アンダーフィル樹脂
200 下型
210 突起部
Claims (10)
- 配線基板と、
前記配線基板上に設けられた下側磁気シールド材と、
前記下側磁気シールド材上に搭載された、磁気記憶素子を有する半導体チップと、
前記下側磁気シールド材との間に前記半導体チップを挟むように、前記半導体チップ上に設けられた、上側磁気シールド材と、を有し、
前記下側磁気シールド材と前記上側磁気シールド材とが直接接している半導体装置。 - 前記上側磁気シールド材は、前記半導体チップを挟んで前記下側磁気シールド材と対向する天板と、前記天板から前記下側磁気シールド材側に延伸する脚部と、を備え、
前記下側磁気シールド材と前記脚部とが直接接している請求項1記載の半導体装置。 - 前記脚部は、前記天板の対向する2辺から前記下側磁気シールド材側に板状に延伸し、前記脚部の下端部が更に水平方向に延伸して板状の折り曲げ部が設けられ、前記折り曲げ部の下面が前記下側磁気シールド材の上面に直接接している請求項2記載の半導体装置。
- 前記脚部は、前記天板の外縁部の複数個所から前記下側磁気シールド材側に延伸し、
前記下側磁気シールド材には複数の孔が設けられ、夫々の前記孔には前記脚部の下端部が圧入されている請求項2記載の半導体装置。 - 前記下側磁気シールド材と前記上側磁気シールド材との間に、前記半導体チップを覆う樹脂が設けられている請求項1乃至4の何れか一項記載の半導体装置。
- 前記樹脂は、前記下側磁気シールド材及び前記上側磁気シールド材を覆うように設けられている請求項5記載の半導体装置。
- 前記上側磁気シールド材には開口部が設けられ、
前記上側磁気シールド材の開口部内には前記樹脂が充填されている請求項6記載の半導体装置。 - 前記半導体チップは、電極パッドを前記上側磁気シールド材側に向けて前記下側磁気シールド材上に搭載され、
前記下側磁気シールド材には、前記配線基板のパッドを露出する開口部が設けられ、
前記半導体チップの前記電極パッドと、前記下側磁気シールド材の開口部内に露出する前記パッドとは、金属線を介して電気的に接続されている請求項1乃至7の何れか一項記載の半導体装置。 - 前記上側磁気シールド材及び前記下側磁気シールド材は軟磁性材料からなる請求項1乃至8の何れか一項記載の半導体装置。
- 配線基板上に、金属からなる下側磁気シールド材を設ける工程と、
前記下側磁気シールド材上に、磁気記憶素子を有する半導体チップを搭載する工程と、
前記下側磁気シールド材との間に前記半導体チップを挟むように、前記半導体チップ上に、金属からなる上側磁気シールド材を設ける工程と、を有し、
前記上側磁気シールド材を設ける工程では、前記下側磁気シールド材と前記上側磁気シールド材とが直接接するように前記上側磁気シールド材を設ける半導体装置の製造方法。
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