JP4219781B2 - 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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Description
図1はこの発明による半導体装置の製造方法に含まれるバンプ形成プロセスにおけるキャピラリの移動を示すグラフである。このバンプ形成プロセスは、周知のボンディングマシンを使用して実行される。このボンディングマシンは、金線が中心孔を貫通するように繰り出されるキャピラリCPと、金線をクランプするクランパCLと、キャピラリCPから繰り出された金線の先端にボールBAを形成するボール形成手段BFとを含んでいる。
動作Eは動作DによるキャピラリCPの円弧運動の終点位置を微調整する金線繰り出し後の水平移動であり、この動作によってボールBAにつながる金線繰り出し量が最終調整される。動作Fは、動作Cによるオフセット量に関連してそのオフセットの方向を設定する。この動作Fは第1ボンディング動作によりボンディングされたボールBAの中心の周りの360度の角度方向の中から、所定の角度方向を設定する。
動作Jは、動作Hにおけるキャピラリの移動方向、すなわち、キャピラリCPを水平方向の360度の中で、どの方向に移動させるかを設定する動作である。
例えば、実施の形態1で、直径25.4μmの金線を使用し、その直径の70%、すなわち17.8μmの水平移動量Hdだけ移動させると、単純には金線の付け根部の水平方向の肉厚は、25.4−17.8=7.6μmにまで薄くされる。この付け根部の肉厚の低減により、金線の付け根部の機械的強度の低減が図られる。
また、スライド工程SLにおけるキャピラリCPのほぼ水平方向の移動量Hdを、金線の直径dの60から80%、特にほぼ70%としたので、付け根部3を必要な強度とすることができる。
また、スライド工程において、キャピラリCPをほぼ水平方向に移動させる前に、キャピラリCPをほぼ垂直方向に、バンプから離れる方向に上昇させるので、キャピラリCPをほぼ水平方向に移動させるときに、キャピラリCPがバンプ1に引っ掛かることもなく、スムーズに安定して所定の移動量Hdで移動することができる。
併せて、キャピラリCPから繰り出された金線の端部にボールBAを形成するので、所定長さの金線の端部に、所望の大きさのボールBAを形成できる。
この実施の形態2は、実施の形態1によりバンプ1を形成し、金線2をその付け根部3で切断した後、金線を所定長さ繰り出し、その端部にボールBAを形成した状態で、この形成されたボールBAにより半導体装置のインナーリードに対するボールボンディングと、さらのこのボールボンディングから金線をバンプ上にステッチボンディングするリバースボンディング工程を実行する。
また動作Jは、スライド工程SLにおいて、キャピラリCPをほぼ水平に移動させる場合の移動方向を設定するが、動作Fと同じに、インナーリードからバンプに向かう方向とほぼ一致するように、その方向が設定される。
この構成は、インナーリードからバンプへ向かう金線について、バンプ1の上面に対するステッチボンディングを容易にし、その接合性を向上する。
Claims (11)
- パッド上にバンプを形成するバンプ形成プロセスを含む半導体装置の製造方法であって、前記バンプ形成プロセスは、キャピラリを移動させながらこのキャピラリから金線を繰り出して前記パッド上にバンプを形成するバンプ形成工程と、このバンプ形成後に前記キャピラリをほぼ水平方向に僅かに移動して前記バンプにつながった前記金線の付け根部の強度を小さくするスライド工程と、このスライド工程の後で前記金線を前記付け根部において切断する切断工程を含み、前記スライド工程では前記バンプ形成工程よりも前記キャピラリの移動速度を小さくすることを特徴とする半導体装置の製造方法。
- 請求項1記載の半導体装置の製造方法であって、前記スライド工程では前記キャピラリの移動速度を前記バンプ形成工程におけるキャピラリの移動速度の1/2から1/25としたことを特徴とする半導体装置の製造方法。
- 請求項2記載の半導体装置の製造方法であって、前記スライド工程では前記キャピラリの移動速度を前記バンプ形成工程におけるキャピラリの移動速度の1/15から1/25としたことを特徴とする半導体装置の製造方法。
- 請求項1記載の半導体装置の製造方法であって、前記スライド工程において、前記キャピラリが前記金線の直径の60%から80%の移動量で、ほぼ水平方向に移動されることを特徴とする半導体装置の製造方法。
- 請求項4記載の半導体装置の製造方法であって、前記スライド工程において、前記キャピラリが、前記金線の直径のほぼ70%の移動量で、ほぼ水平方向に移動されることを特徴とする半導体装置の製造方法。
- 請求項1記載の半導体装置の製造方法であって、前記スライド工程において、前記キャピラリをほぼ水平方向に移動するときに、前記キャピラリに超音波振動を加えることを特徴とする半導体装置の製造方法。
- 請求項1記載の半導体装置の製造方法であって、前記スライド工程において、前記キャピラリをほぼ水平方向に移動させる前に、前記キャピラリをほぼ垂直方向に、バンプから離れる方向に僅かに上昇させることを特徴とする半導体装置の製造方法。
- 請求項1記載の半導体装置の製造方法であって、前記切断工程の後で、前記キャピラリを上昇させ、前記キャピラリから前記金線を所定長さだけ繰り出し、その後に前記切断工程を実行することを特徴とする半導体装置の製造方法。
- 請求項8記載の半導体装置の製造方法であって、前記切断工程の後で、キャピラリから繰り出された金線の端部にボールを形成することを特徴とする半導体装置の製造方法。
- 請求項9記載の半導体装置の製造方法であって、前記ボールを形成した後で、前記金線をインナーリードへボールボンディングし、その後、前記金線を前記バンプへステッチボンディングするボンディング工程が行われることを特徴とする半導体装置の製造方法。
- 請求項10記載の半導体装置の製造方法であって、前記スライド工程において、前記キャピラリを、前記インナーリードから前記バンプへ向かう方向に、ほぼ水平移動に移動させることを特徴とする半導体装置の製造方法。
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JP2003345470A JP4219781B2 (ja) | 2003-10-03 | 2003-10-03 | 半導体装置の製造方法 |
US10/954,520 US7153764B2 (en) | 2003-10-03 | 2004-10-01 | Method of manufacturing a semiconductor device including a bump forming process |
US11/633,591 US7510958B2 (en) | 2003-10-03 | 2006-12-05 | Method of manufacturing a semiconductor device including a bump forming process |
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JP2003345470A JP4219781B2 (ja) | 2003-10-03 | 2003-10-03 | 半導体装置の製造方法 |
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JP4219781B2 (ja) * | 2003-10-03 | 2009-02-04 | 株式会社ルネサステクノロジ | 半導体装置の製造方法 |
CN103500715B (zh) * | 2013-09-30 | 2016-01-20 | 中南大学 | 一种抗侧摆三维引线成弧方法 |
CN110854094A (zh) * | 2019-11-27 | 2020-02-28 | 中国兵器工业集团第二一四研究所苏州研发中心 | 大尺寸芯片的键合线低弧键合方法 |
WO2022269772A1 (ja) * | 2021-06-22 | 2022-12-29 | 株式会社新川 | バンプ形成装置、バンプ形成方法及びバンプ形成プログラム |
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US5060843A (en) * | 1989-06-07 | 1991-10-29 | Nec Corporation | Process of forming bump on electrode of semiconductor chip and apparatus used therefor |
JPH056893A (ja) | 1991-02-22 | 1993-01-14 | Fujitsu Ltd | キヤピラリ、それによるバンプ製造方法及びそれによる半導体装置 |
JPH05235002A (ja) | 1992-02-24 | 1993-09-10 | Matsushita Electric Ind Co Ltd | バンプ形成方法 |
US5842628A (en) * | 1995-04-10 | 1998-12-01 | Fujitsu Limited | Wire bonding method, semiconductor device, capillary for wire bonding and ball bump forming method |
DE69729759T2 (de) * | 1996-10-01 | 2005-07-07 | Matsushita Electric Industrial Co., Ltd., Kadoma | Integrierte Schaltung oder Platine mit einer Höckerelektrode und Verfahren zu Ihrer Herstellung |
JP3202193B2 (ja) | 1998-04-24 | 2001-08-27 | シャープタカヤ電子工業株式会社 | ワイヤボンディング方法 |
JP3457196B2 (ja) | 1998-12-22 | 2003-10-14 | 株式会社カイジョー | ボールボンディング方法 |
JP4290834B2 (ja) | 1999-11-19 | 2009-07-08 | パナソニック株式会社 | バンプボンディング方法と装置 |
JP4313958B2 (ja) | 2001-03-22 | 2009-08-12 | 株式会社新川 | ワイヤボンディング方法 |
US7229906B2 (en) * | 2002-09-19 | 2007-06-12 | Kulicke And Soffa Industries, Inc. | Method and apparatus for forming bumps for semiconductor interconnections using a wire bonding machine |
JP4219781B2 (ja) * | 2003-10-03 | 2009-02-04 | 株式会社ルネサステクノロジ | 半導体装置の製造方法 |
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US20070077746A1 (en) | 2007-04-05 |
US7510958B2 (en) | 2009-03-31 |
US20050074958A1 (en) | 2005-04-07 |
JP2005116603A (ja) | 2005-04-28 |
US7153764B2 (en) | 2006-12-26 |
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