JP4674113B2 - 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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Description
図1は、本発明の実施例1を示す半導体チップ積層型の半導体装置の概略の断面図である。
実施例1の半導体装置は、例えば、次のような製造工程により製造される。
本実施例1では、次の(1)〜(5)のような効果がある。
11 ダイパッド
11a,11b 端部
12,13 外部端子
14 貫通孔
20−1〜20−4 半導体チップ
20−1a,20−1b〜20−1b,20−4b 辺
22−1〜22−4 内部回路
23−1〜23−4,24−1〜24−4 入出力回路
25−1〜25−4 配線
26−1〜26−4,27−1〜27−4,28−1〜28−4 電極パッド
30 スペーサ
31 ワイヤ
40 樹脂封止部材
Claims (19)
- 第1の辺に沿って形成された第1の電極パッドと、前記第1の辺に対向する第2の辺に沿って形成された第2の電極パッドと、前記第2の電極パッドに沿って形成されると共に前記第1の電極パッドと電気的に接続された第3の電極パッドとが表面に形成された第1の半導体チップと、
前記第1の半導体チップとほぼ同一外形寸法で、かつ同様の構成を有する第2、第3、第4の半導体チップとを有し、ダイパッド上に前記第1の半導体チップが配置され、
前記第1の半導体チップの前記第2及び第3の電極パッドを露出させると共に、端部を突出するように前記第2の半導体チップが前記第1の半導体チップ上に配置され、
前記第2の半導体チップの前記第1、第2及び第3の電極パッドを露出させるようにスペーサが配置され、
前記スペーサ上に前記第3の半導体チップが配置され、
前記第3の半導体チップの前記第2及び第3の電極パッドを露出させると共に、端部を突出するように前記第4の半導体チップが前記第3の半導体チップ上に配置され、
前記第1の半導体チップの前記第3の電極パッドと前記第2の半導体チップの前記第3の電極パッドとが電気的に接続されると共に、前記第3の半導体チップの前記第3の電極パッドと前記第4の半導体チップの前記第3の電極パッドとが電気的に接続され、
前記第2の半導体チップの前記第1の電極パッドと前記第4の半導体チップの前記第1の電極パッドとが第1の外部端子に電気的に接続されると共に、前記第1の半導体チップの前記第2の電極パッドと前記第3の半導体チップの前記第2の電極パッドとが第2の外部端子に電気的に接続され、
前記第1、第2、第3、第4の半導体チップ、前記ダイパッド、前記スペーサ及び前記外部端子が樹脂で封止され、前記第1、第2の外部端子の一部が露出されたことを特徴とする半導体装置。 - 前記第1、第2、第3、第4の半導体チップにはそれぞれ、内部回路、第1の入出力回路、及び第2の入出力回路が設けられ、
前記第1の電極パッドは、前記第1の入出力回路に接続され、外部に対して信号の入出力を行う複数のパッドにより構成され、
前記第2の電極パッドは、前記第2の入出力回路に接続され、外部に対して信号の入出力を行う複数のパッドにより構成され、
前記第3の電極パッドは、前記内部回路に接続されると共に前記第1の入出力回路を介して前記第1の電極パッドに接続され、他の前記半導体チップとの間で信号の授受を行うパッドと、前記内部回路に接続されると共に前記第2の入出力回路を介して前記第2の電極パッドに接続され、他の前記半導体チップとの間で信号の授受を行うパッドとにより構成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。 - 前記スペーサは、非導電性シリコンで形成されていることを特徴とする請求項1又は2に記載の半導体装置。
- 前記スペーサの厚さは、前記外部端子の厚さとほぼ同じであることを特徴とする請求項1〜3のいずれか1項に記載の半導体装置。
- 前記樹脂封止される前記外部端子の高さは、前記第3の半導体チップの裏面の高さと前記第2の半導体チップの表面の高さの間であることを特徴とする請求項1〜4のいずれか1項に記載の半導体装置。
- 前記第1の半導体チップの端部と前記第3の半導体チップの端部とが、上面視で重なるように配置され、かつ前記第2の半導体チップの端部と前記第4の半導体チップの端部とが、上面視で重なるように配置されていることを特徴とする請求項1〜5のいずれか1項に記載の半導体装置。
- 前記第2の半導体チップの端部と前記第3の半導体チップの端部とが、上面視で重なるように配置されていることを特徴とする請求項1〜5のいずれか1項に記載の半導体装置。
- 前記第4の半導体チップの端部から前記ダイパッドの端部が突出していることを特徴とする請求項1〜7のいずれか1項に記載の半導体装置。
- 前記ダイパッドには貫通孔が設けられていることを特徴とする請求項8に記載の半導体装置。
- 前記第1及び第2の半導体チップの前記各第3の電極パッド同士がワイヤにより接続されると共に、前記第3及び第4の半導体チップの前記各第3の電極パッド同士がワイヤにより接続され、前記第2及び第4の半導体チップの前記各第1の電極パッドがワイヤにより前記外部端子に接続されると共に、前記第1及び第3の半導体チップの前記各第2の電極パッドがワイヤにより他の前記外部端子に接続されていることを特徴とする請求項1〜9のいずれか1項に記載の半導体装置。
- 第1の辺に沿って形成された第1の電極パッドと、前記第1の辺に対向する第2の辺に沿って形成された第2の電極パッドと、前記第2の電極パッドに沿って形成されると共に前記第1の電極パッドと電気的に接続された第3の電極パッドとが表面に形成された第1の半導体チップと、
前記第1の半導体チップとほぼ同一外形寸法で、かつ同様の構成を有する第2、第3及び第4の半導体チップと、
ダイパッド及びこの近傍に配置された第1及び第2の外部端子とを有する半導体装置の製造方法であって、
前記第1の半導体チップの裏面を前記ダイパッド上に固定する工程と、
前記第1の半導体チップの前記第2及び第3の電極パッドを露出させると共に、端部を突出するように前記第1の半導体チップの表面に前記第2の半導体チップの裏面を固定する工程と、
前記第2の半導体チップの前記第1、第2及び第3の電極パッドを露出させるように前記第2の半導体チップの表面にスペーサを固定する工程と、
前記第3の半導体チップの裏面を前記スペーサ上に固定する工程と、
前記第3の半導体チップの前記第2及び第3の電極パッドを露出させると共に、端部を突出するように前記第3の半導体チップの表面に前記第4の半導体チップの裏面を固定する工程と、
前記第1の半導体チップの前記第3の電極パッドと前記第2の半導体チップの前記第3の電極パッドとをワイヤにより接続し、前記第3の半導体チップの前記第3の電極パッドと前記第4の半導体チップの前記第3の電極パッドとをワイヤにより接続し、前記第2の半導体チップの前記第1の電極パッドと前記第4の半導体チップの前記第1の電極パッドとをワイヤにより前記第1の外部端子に接続し、前記第1の半導体チップの前記第2の電極パッドと前記第3の半導体チップの前記第2の電極パッドとをワイヤにより前記第2の外部端子に接続する工程と、
前記第1、第2の外部端子の一部が露出するように、前記第1、第2、第3、第4の半導体チップ、前記ダイパッド、前記スペーサ及び前記第1、第2の外部端子を樹脂で封止する工程と、
を有することを特徴とする半導体装置の製造方法。 - 前記第1、第2、第3、第4の半導体チップにはそれぞれ、内部回路、第1の入出力回路、及び第2の入出力回路が設けられ、
前記第1の電極パッドは、前記第1の入出力回路に接続され、外部に対して信号の入出力を行う複数のパッドにより構成され、
前記第2の電極パッドは、前記第2の入出力回路に接続され、外部に対して信号の入出力を行う複数のパッドにより構成され、
前記第3の電極パッドは、前記内部回路に接続されると共に前記第1の入出力回路を介して前記第1の電極パッドに接続され、他の前記半導体チップとの間で信号の授受を行うパッドと、前記内部回路に接続されると共に前記第2の入出力回路を介して前記第2の電極パッドに接続され、他の前記半導体チップとの間で信号の授受を行うパッドとにより構成されていることを特徴とする請求項11に記載の半導体装置の製造方法。 - 前記第3の半導体チップを固定する工程では、前記第1の半導体チップの端部に対して前記第3の半導体チップの端部が、上面視で重なるように前記第2の半導体チップ上に固定し、
前記第4の半導体チップを固定する工程では、前記第2の半導体チップの端部に対して前記第4の半導体チップの端部が、上面視で重なるように前記第3の半導体チップ上に固定することを特徴とする請求項11又は12に記載の半導体装置の製造方法。 - 前記第3の半導体チップを固定する工程では、前記第2の半導体チップの端部に対して前記第3の半導体チップの端部が、上面視で重なるように前記第2の半導体チップ上に固定することを特徴とする請求項11又は12に記載の半導体装置の製造方法。
- 前記第4の半導体チップを固定する工程では、前記第4の半導体チップの端部から前記ダイパッドの端部が突出するように、前記第4の半導体チップを前記第3の半導体チップ上に固定することを特徴とする請求項11〜14のいずれか1項に記載の半導体装置の製造方法。
- 前記スペーサは、非導電性シリコンで形成されていることを特徴とする請求項11〜15のいずれか1項に記載の半導体装置の製造方法。
- 前記スペーサの厚さは、前記第1、第2の外部端子の厚さとほぼ同じであることを特徴とする請求項11〜16のいずれか1項に記載の半導体装置の製造方法。
- 前記樹脂封止される前記第1、第2の外部端子の高さは、前記第3の半導体チップの裏面の高さと前記第2の半導体チップの表面の高さの間であることを特徴とする請求項11〜17のいずれか1項に記載の半導体装置の製造方法。
- 前記ダイパッドには貫通孔が設けられていることを特徴とする請求項11〜18のいずれか1項に記載の半導体装置の製造方法。
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