JP4476247B2 - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
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- JP4476247B2 JP4476247B2 JP2006172961A JP2006172961A JP4476247B2 JP 4476247 B2 JP4476247 B2 JP 4476247B2 JP 2006172961 A JP2006172961 A JP 2006172961A JP 2006172961 A JP2006172961 A JP 2006172961A JP 4476247 B2 JP4476247 B2 JP 4476247B2
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Description
第1に、ボンディングパッドを有する半導体チップにボールバンプを形成する半導体装置の製造方法であり、
前記ボールバンプは、ボンディングワイヤのボールボンディングが活用され、
先端にボールが配置されたキャピラリを使い、前記ボンディングパッドに前記ボールを固着し、
前記ボールの付け根付近の前記ボンディングワイヤが前記キャピラリの内部に収納されないように、前記キャピラリを上昇させ、
前記キャピラリを水平移動させることによって、前記ボールと前記ボンディングワイヤの間に細いボンディングワイヤを形成し、
前記細いボンディングワイヤが前記ボールと連続している状態で、前記ボンディングワイヤをクランプしてキャピラリを上昇させることにより、前記細いボンディングワイヤを切断させて前記ボールバンプを形成することで解決するものである。
第2に、前記キャピラリの水平移動の距離を、前記ボンディングワイヤの直径のほぼ3分の2を越える距離とすることで解決するものである。
第3に、前記ボンディングワイヤをクランプし水平方向に移動させることにより、剪断しながら前記細いボンディングワイヤを形成することで解決するものである。
Claims (6)
- 半導体チップ上のボンディングパッドに、ボールバンプを形成する半導体装置の製造方法であり、
前記ボールバンプの形成は、ボンディングワイヤのボールボンディング法が活用され、
前記ボンディングワイヤが挿通され、先端にボールが配置されたキャピラリを使い、前記ボンディングパッドに前記ボールを固着し、
前記ボールの付け根付近の前記ボンディングワイヤが前記キャピラリの内部に収納されないように、前記キャピラリを上昇させ、
前記キャピラリを水平移動させることによって、前記ボンディングワイヤを途中まで剪断して細い部分を形成し、
前記ボンディングワイヤが前記細い部分を通じて前記ボールと連続している状態で、前記キャピラリを上昇させた後に、前記ボンディングワイヤをクランプして前記キャピラリを上昇させることにより、前記細い部分を完全に切断させて前記ボールバンプを形成することを特徴とした半導体装置の製造方法。 - 前記剪断の位置は、前記ボールから延在される前記ボンディングワイヤの直径を維持した所で、前記ボンディングワイヤの付け根の直ぐ上部である請求項1に記載の半導体装置の製造方法。
- 前記ボールバンプの上にボンディングワイヤをボンドする請求項1または請求項2に記載の半導体装置の製造方法。
- 前記半導体チップは、前記半導体チップを支持する基板に固着されている請求項1、請求項2または請求項3に記載の半導体装置の製造方法。
- 前記半導体チップの表面にはパッシベーション皮膜が設けられると共に、前記ボンディングパッドの上部は前記パッシベーション皮膜が開口され、
前記半導体チップは、絶縁接着剤によりフィルム基板に固着され、
前記パッシベーション皮膜の開口された所のボンディングパッドに前記ボールバンプを形成する請求項1〜請求項4のいずれか1項に記載の半導体装置の製造方法。 - 前記半導体チップの表面にはパッシベーション皮膜が設けられると共に、前記ボンディングパッドの上部は前記パッシベーション皮膜が開口され、
前記半導体チップは、前記半導体チップを支持する基板に設けられた絶縁接着剤により固着され、
前記半導体チップを支持する基板には、金メッキから成る内部電極が設けられ、金から成る前記金属細線は、前記ボールバンプの上部と前記内部電極の間で接続される請求項1〜請求項4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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