JP5763887B2 - 銅カラム及びその製造方法 - Google Patents
銅カラム及びその製造方法 Download PDFInfo
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Description
[銅カラム30の製造例]
<伸線工程、切断工程及びプレス工程>
まずは、銅カラム30の製造方法に係る伸線工程、切断工程及びプレス工程について説明する。本実施の形態に係る銅線10は、予め伸線工程で伸線されていることを前提とする。伸線とは、銅線の側面を叩いた後ダイスを通すことにより、銅線を伸ばして所定の径に形成する処理のことである。
次に、銅カラム30の製造方法に係る焼鈍工程について説明する。銅カラム部材の製造装置100で製造された銅カラム部材20は、焼鈍炉に投入され、図4に示す温度プロファイルで焼鈍される。図4の縦軸は焼鈍炉内の温度(℃)であり、横軸は銅カラム部材20を焼鈍炉に投入してからの経過時間(分)である。
次に、銅カラム30の製造方法に係る表面処理工程及びめっき工程について説明する。上述のように焼鈍された銅カラム部材20をアミン系の表面処理剤で表面を処理する。すると、銅カラム部材20の表面が粗くなり、めっき液が付着しやすくなる。
次に、上述の銅カラム30の製造方法で製造された銅カラム30の形状例について説明する。図5A及び図5Bに示すように、銅カラム30は、カラム本体部30a及びカラムヘッド部30bで構成される。本実施の形態では、銅カラム30の長さL1は、1.524mmであり、カラム本体部30aの径D1は、0.25mmであり、カラムヘッド部30bの長さL2は0.13mmであり、カラムヘッド部30bの径D2は、0.5mmである。このような銅カラム30は、カラム本体部30aの径D1が0.25mmと小さいので、端面が平坦なカラムヘッド部30bを設けることで、図1で説明したセラミック基板40とのはんだ付け強度を増強している。
(1)無酸素銅で構成された直径6mmの線形状の銅線の側面を叩き、ダイスを通して直径2.6mmまで伸線した。
(2)直径2.6mmまで伸線した銅線の側面を更に叩き、ダイスを通して直径0.25mmまで伸線した。
(3)図2及び図3に示したように、直径0.25mmまで伸線した銅線を長さ1.941mmに切断し、該切断した銅線の一端をハンマでプレスしてカラムヘッド部を形成して、銅カラム部材を作製した。この銅カラム部材の長さは1.524mmである。
(4)このように作製された銅カラム部材をSUS製バットに入れて、連続コンベア式電気抵抗加熱炉(焼鈍炉)に通して焼鈍した。この焼鈍条件は、コンベアスピードが30mm/分、670℃までの昇温時間が52分、670℃保持時間が90分、空冷ファンによる冷却時間が39分である。銅カラムの酸化防止のために焼鈍炉内を窒素ガス雰囲気にした。
(5)焼鈍された銅カラム部材をIPA(Isopropyl alcohol)で洗浄後、アミン系の表面処理剤で銅カラム部材の表面を処理した。
(6)メタンスルフォン酸系のSnめっき液に焼鈍済の銅カラム部材を投入し、めっき厚が略0.5μmになるように時間を設定して、Snめっきした。
(7)めっき後の銅カラム部材をIPAで洗浄後、乾燥した。
Claims (4)
- 銅線を所定の径にするために伸線する伸線工程と、
前記伸線工程で伸線した銅線を所定の長さに切断する切断工程と、
前記切断工程で切断されたカラム本体部としての銅線の長手方向の一端に向かってハンマを衝突させることにより、前記カラム本体部よりも大きい径を有するカラムヘッドが設けられた釘形状の銅カラム部材を形成するプレス工程と、
前記プレス工程で得られた前記銅カラム部材を、670℃以上の加熱温度で、かつ、90分間以上の加熱時間で保持して焼鈍することにより、ビッカース硬さ3HVのPb-Snはんだよりも硬く、ビッカース硬さが48HV以下となる銅カラムを形成する焼鈍工程とを有することを特徴とする銅カラムの製造方法。 - 前記焼鈍工程で焼鈍した銅線若しくは銅カラム部材を、アミン系の表面処理剤で表面処理する表面処理工程を有することを特徴とする請求項1に記載の銅カラムの製造方法。
- 前記焼鈍工程で焼鈍した銅線若しくは銅カラム部材、又は、前記表面処理工程で表面処理した銅線若しくは銅カラム部材を、メタンスルフォン酸系のめっき液でめっきするめっき工程を有することを特徴とする請求項2に記載の銅カラムの製造方法。
- 請求項1から3の何れか一項に記載の銅カラムの製造方法により製造されることを特徴とする銅カラム。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2010039096A JP5763887B2 (ja) | 2010-02-24 | 2010-02-24 | 銅カラム及びその製造方法 |
US13/579,384 US8841559B2 (en) | 2010-02-24 | 2011-02-22 | Copper column |
PCT/JP2011/054430 WO2011105598A1 (ja) | 2010-02-24 | 2011-02-22 | 銅カラム及びその製造方法 |
TW100105954A TWI516179B (zh) | 2010-02-24 | 2011-02-23 | Copper pillars and methods for their manufacture |
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JP2010039096A JP5763887B2 (ja) | 2010-02-24 | 2010-02-24 | 銅カラム及びその製造方法 |
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JP2011176124A JP2011176124A (ja) | 2011-09-08 |
JP5763887B2 true JP5763887B2 (ja) | 2015-08-12 |
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JP (1) | JP5763887B2 (ja) |
TW (1) | TWI516179B (ja) |
WO (1) | WO2011105598A1 (ja) |
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US9491859B2 (en) | 2012-05-23 | 2016-11-08 | Massachusetts Institute Of Technology | Grid arrays with enhanced fatigue life |
WO2015118611A1 (ja) * | 2014-02-04 | 2015-08-13 | 千住金属工業株式会社 | Cuボール、Cu核ボール、はんだ継手、はんだペースト、およびフォームはんだ |
EP3188222B1 (en) * | 2014-08-29 | 2022-03-16 | Nippon Micrometal Corporation | Cylindrical formed body for cu pillars for semiconductor connection |
KR20170042372A (ko) * | 2014-09-09 | 2017-04-18 | 센주긴조쿠고교 가부시키가이샤 | Cu 칼럼, Cu 핵 칼럼, 납땜 조인트 및 실리콘 관통 전극 |
JP6462730B2 (ja) * | 2015-01-29 | 2019-01-30 | 京セラ株式会社 | 回路基板および電子装置 |
US9806052B2 (en) * | 2015-09-15 | 2017-10-31 | Qualcomm Incorporated | Semiconductor package interconnect |
CN107557847B (zh) * | 2017-08-21 | 2019-05-21 | 东又悦(苏州)电子科技新材料有限公司 | 一种电镀铜球的制备方法 |
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US4677526A (en) * | 1984-03-01 | 1987-06-30 | Augat Inc. | Plastic pin grid array chip carrier |
US4740414A (en) * | 1986-11-17 | 1988-04-26 | Rockwell International Corporation | Ceramic/organic multilayer interconnection board |
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2010
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- 2011-02-22 WO PCT/JP2011/054430 patent/WO2011105598A1/ja active Application Filing
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JP2011176124A (ja) | 2011-09-08 |
US20130025917A1 (en) | 2013-01-31 |
WO2011105598A1 (ja) | 2011-09-01 |
TWI516179B (zh) | 2016-01-01 |
TW201141330A (en) | 2011-11-16 |
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