JP4726640B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP4726640B2 JP4726640B2 JP2006012760A JP2006012760A JP4726640B2 JP 4726640 B2 JP4726640 B2 JP 4726640B2 JP 2006012760 A JP2006012760 A JP 2006012760A JP 2006012760 A JP2006012760 A JP 2006012760A JP 4726640 B2 JP4726640 B2 JP 4726640B2
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- chip
- bonding
- wiring
- semiconductor device
- memory
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Description
また、チップ間を接着する接着剤の接着力が小さすぎるとインタポーザチップやマイコンチップの位置がずれ、チップ間を接着する接着剤の接着力が大きすぎると製造中にメモリチップが割れるという問題があった。
また、メモリチップの端部の電極が露出するように複数のメモリチップを所定の距離ずつずらして積層した場合は、封止用液体樹脂を流す方向によっては、メモリチップと配線基板の間の空間にボイドができたり、メモリチップが剥がされるという問題があった。
図1は、この発明の実施の形態1による半導体装置の構成を示す平面図であり、図2は図1のII−II線断面図である。図1および図2において、この半導体装置は、配線基板1の表面上に4枚のメモリチップ2〜5とマイコンチップ6を積層し、マイコンチップ6に隣接してメモリチップ5の表面上にインタポーザチップ7を搭載し、モールド樹脂8で封止したスタック構造のSIPである。配線基板1、メモリチップ2〜5、マイコンチップ6およびインタポーザチップ7は、接着フィルムF1〜F6により互いに固定されている。
図2で示したように、この半導体装置では、配線基板1、メモリチップ2〜5、マイコンチップ6およびインタポーザチップ7は、接着フィルムF1〜F6により互いに固定されている。
図2で示したように、この半導体装置では、配線基板1の表面に4枚のメモリチップ2〜5が積載され、メモリチップ5の表面にマイコンチップ6およびインタポーザチップ7が搭載され、これらは接着フィルムF1〜F6により互いに固定されている。このため、この半導体装置には、厚みが大きいという問題がある。そこで、従来は20μm程度であった接着フィルムF1〜F6の厚みを10μm以下にすることにより、半導体装置の厚みを小さくすることを試みた。しかし、配線基板1の表面には6〜10μm程度の凹凸があり、厚さ10μmの接着フィルムF1ではその凹凸を吸収できず、接着フィルムF1の下面と配線基板1の表面との間にボイドが残る。配線基板1上に接着する接着フィルムF1の厚みを10μm以下にする場合には、配線基板1表面のうち、配線層1b上に形成されたソルダレジスト層表面の平均高さと、配線層1b間の領域上に形成されたソルダレジスト層表面の平均高さとの差が、5μm以下になるような配線基板1を採用することにより、接着フィルムF1の下面と配線基板1表面との間のボイドを無くす、もしくは、問題ないレベルにまで低減することができる。
図13は、この発明の実施の形態4による半導体装置の製造方法を示す断面図である。図13において、この半導体装置の製造方法では、型枠70の直方体状の内部空間の長方形の底にワイヤボンディングの終了した複数(図13では4つ)の半導体装置70が複数行複数列(図13では2行2列)に配置される。各半導体装置70は、その長辺を型枠70の長辺と同じ方向に向け、インタポーザチップ7側を図13中右側にして、型枠70内に配置される。型枠70の図13中左上の角には樹脂注入口70aが設けられ、図13中右下の角には排気口70bが設けられている。
図15は、この発明の実施の形態5による半導体装置の構成を示す平面図であって、図1と対比される図である。図15を参照して、この半導体装置が図1の半導体装置と異なる点は、インタポーザチップ7が除去され、マイコンチップ6がメモリチップ5表面の図中左上の角に配置されている点と、配線基板1のインタポーザチップ7用のボンディングパッド11が除去され、マイコンチップ6用のボンディングパッド75,76が設けられている点である。
Claims (2)
- 配線基板の表面上に第1のチップと第2のチップが積層された半導体装置において、
前記第2のチップに隣接して前記第1のチップの表面上にインタポーザチップが設けられ、
前記配線基板の表面の1辺に沿って複数の第1電極が配列され、
前記インタポーザチップの表面の前記複数の第1電極側の1辺に沿って複数の第2電極が配列され、
前記第2のチップの表面の前記インタポーザチップ側の1辺に沿って複数の第3電極が配列され、
前記第2のチップの表面の前記インタポーザチップ側の1辺と直交する1辺に沿って複数の第4電極が配列され、
前記インタポーザチップの表面の前記第2のチップ側の1辺に沿って、前記複数の第3の電極に対応する複数の第5電極と前記複数の第4の電極に対応する複数の第6の電極とが配列され、
前記複数の第5の電極のうちの少なくとも1つの第5の電極と前記インタポーザチップの前記第2のチップ側の1辺との間の距離は、各第6の電極と前記インタポーザチップの前記第2のチップ側の1辺との間の距離よりも長く、
各第3電極はボンディングワイヤを介して対応の第5電極に接続され、
各第4電極はボンディングワイヤを介して対応の第6電極に接続され、
各第5電極は前記インタポーザチップの配線を介して対応の第2電極に接続され、
各第6電極は前記インタポーザチップの配線を介して対応の第2電極に接続され、
各第2電極はボンディングワイヤを介して対応の第1電極に接続されることを特徴とする、半導体装置。 - 前記複数の第5電極および前記複数の第6電極は略円弧状に配列されていることを特徴とする、請求項1に記載の半導体装置。
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JP2006012760A JP4726640B2 (ja) | 2006-01-20 | 2006-01-20 | 半導体装置 |
US11/617,239 US7622799B2 (en) | 2006-01-20 | 2006-12-28 | Semiconductor device, interposer chip and manufacturing method of semiconductor device |
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JP2006012760A JP4726640B2 (ja) | 2006-01-20 | 2006-01-20 | 半導体装置 |
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