JP7447992B2 - ボンディングワイヤとその製造方法 - Google Patents
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- H01L24/42—Wire connectors; Manufacturing methods related thereto
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- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
- H01L2224/45—Structure, shape, material or disposition of the wire connectors prior to the connecting process of an individual wire connector
- H01L2224/45001—Core members of the connector
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- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/44—Structure, shape, material or disposition of the wire connectors prior to the connecting process
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- H01L2224/45001—Core members of the connector
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- H01L2224/42—Wire connectors; Manufacturing methods related thereto
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- H01L2224/42—Wire connectors; Manufacturing methods related thereto
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- H01L2224/85—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a wire connector
- H01L2224/85007—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a wire connector involving a permanent auxiliary member being left in the finished device, e.g. aids for holding or protecting the wire connector during or after the bonding process
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Description
以下、本発明の実施例について図面を参照して説明する。図1は本発明の第1の実施例に係るボンディングワイヤの縦断面図である。本実施例のボンディングワイヤ1は、複数の開口端面20-1,20-2がそれぞれ接続対象の配線11-1,11-2の表面と当接して閉塞されるように、配線11-1,11-2が形成されたIC10-1,10-2上に架設された絶縁体からなる中空部材2と、中空部材2が配線11-1,11-2の表面と当接している箇所において配線11-1,11-2の表面と接合するように中空部材2内に充填された導体からなる接続部材3とから構成される。
こうして、図1に示したボンディングワイヤ1の形成が完了し、IC10-1の配線11-1とIC10-2の配線11-2とを電気的に接続することができる。
同様に、接続部材3として溶融金属を用いる場合にも、溶融金属が空気孔21から漏れ出ることがないように空気孔21の径の設定と溶融金属の選定とを行えばよい。
図4は本発明の第2の実施例に係るボンディングワイヤの縦断面図である。本実施例のボンディングワイヤ1aは、注入孔22に蓋4を形成しない例を示している。IC10-1,10-2を密封されたモジュール内に実装する場合には、空気中の不純物が中空部材2内に入ることはないので、蓋4が不要となる。
第1、第2の実施例では、図5の平面図に示すように横断面形状が円環状の中空部材2を用いた。
これに対して、図6に示す本実施例のボンディングワイヤ1bのように、横断面形状が角環状の中空部材2bを用いてもよい。ボンディングワイヤ1bの製造方法は第1の実施例と同様である。第2の実施例で説明したとおり、中空部材2bには蓋4を形成しなくてもよい。
図7は本発明の第4の実施例に係るボンディングワイヤの縦断面図である。本実施例のボンディングワイヤ1cは、注入孔22と連通し、注入孔22から上方に向かって径が漸次拡大する漏斗部23を中空部材2cに設けたものである。漏斗部23を設けることにより、キャピラリから注入孔22への接続部材3の注入を簡易に行うことができる。ボンディングワイヤ1cの製造方法は第1の実施例と同様である。漏斗部23を有する中空部材2cは、第1の実施例と同様に3次元プリンタによって形成可能である。漏斗部23の開口部には蓋4を形成しなくてもよい。
第1~第4の実施例では、2点間のみでの接続しかできなかったが、本発明のボンディングワイヤの中空部材は3次元プリンタを用いて作製されているため、2点間のみではなく、多点間の接続が可能である。
また、図11に示すように、より複雑な形状のボンディングワイヤ1fを作製することも可能である。
Claims (8)
- 複数の開口端面がそれぞれ接続対象の配線の表面と当接して閉塞されるように、前記配線が形成されたICの上に架設された絶縁体からなる中空部材と、
前記中空部材が前記配線の表面と当接している箇所において前記配線の表面と接合するように前記中空部材内に充填された導体からなる接続部材とから構成され、
前記中空部材と前記接続部材とは、2を超える多数の配線間を接続するように設けられ、1本の線から2を超える多数の枝線が分かれる形状であり、前記枝線の先端の接続部材が前記配線の表面と接合していることを特徴とするボンディングワイヤ。 - 請求項1記載のボンディングワイヤにおいて、
前記中空部材は、横断面形状が円環状または角環状であることを特徴とするボンディングワイヤ。 - 複数の開口端面がそれぞれ接続対象の配線の表面と当接して閉塞されるように、前記配線が形成されたICの上に絶縁体からなる中空部材を架設する第1の工程と、
前記中空部材が前記配線の表面と当接している箇所において前記配線の表面と接するように、流動可能な状態の導体からなる接続部材を前記中空部材の注入孔を通して前記中空部材内に注入する第2の工程と、
前記接続部材を硬化させる第3の工程とを含むことを特徴とするボンディングワイヤの製造方法。 - 請求項3記載のボンディングワイヤの製造方法において、
前記中空部材は、横断面形状が円環状または角環状であることを特徴とするボンディングワイヤの製造方法。 - 請求項3または4記載のボンディングワイヤの製造方法において、
前記第1の工程は、前記接続対象の配線の上部の位置に、外壁から内壁まで貫通する空気孔が設けられるように前記中空部材を形成する工程を含むことを特徴とするボンディングワイヤの製造方法。 - 請求項3乃至5のいずれか1項に記載のボンディングワイヤの製造方法において、
前記第1の工程は、前記注入孔と連通し、前記注入孔から上方に向かって径が拡大する漏斗部が設けられるように前記中空部材を形成する工程を含むことを特徴とするボンディングワイヤの製造方法。 - 請求項3乃至6のいずれか1項に記載のボンディングワイヤの製造方法において、
前記注入孔の部分に蓋を形成して、前記蓋によって前記注入孔を閉塞する第4の工程をさらに含むことを特徴とするボンディングワイヤの製造方法。 - 請求項3乃至7のいずれか1項に記載のボンディングワイヤの製造方法において、
前記中空部材は、3次元プリンタによって形成されることを特徴とするボンディングワイヤの製造方法。
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2012231034A (ja) | 2011-04-26 | 2012-11-22 | Fujifilm Corp | ボンディングワイヤ、並びに、プリント回路板およびその製造方法 |
JP2016195292A (ja) | 2016-08-25 | 2016-11-17 | シャープ株式会社 | 半導体装置およびその製造方法 |
WO2018110417A1 (ja) | 2016-12-14 | 2018-06-21 | 株式会社新川 | ワイヤボンディング装置及びワイヤボンディング方法 |
JP2019134181A (ja) | 2009-06-18 | 2019-08-08 | ローム株式会社 | 半導体装置 |
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- 2020-04-07 JP JP2022513734A patent/JP7447992B2/ja active Active
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JP2019134181A (ja) | 2009-06-18 | 2019-08-08 | ローム株式会社 | 半導体装置 |
JP2012231034A (ja) | 2011-04-26 | 2012-11-22 | Fujifilm Corp | ボンディングワイヤ、並びに、プリント回路板およびその製造方法 |
JP2016195292A (ja) | 2016-08-25 | 2016-11-17 | シャープ株式会社 | 半導体装置およびその製造方法 |
WO2018110417A1 (ja) | 2016-12-14 | 2018-06-21 | 株式会社新川 | ワイヤボンディング装置及びワイヤボンディング方法 |
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