JP5837697B2 - 太径ワイヤ又はストリップに接するための金属成形体を備えたパワー半導体チップ及びその製造方法 - Google Patents
太径ワイヤ又はストリップに接するための金属成形体を備えたパワー半導体チップ及びその製造方法 Download PDFInfo
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Description
・ 薄い半導体要素の場合にも、成形体が、太径銅ワイヤによる上部側の接続を可能にする。
・ 成形体が、太径銅ワイヤのボンディング中に半導体の薄く損傷を受けやすい金属化表面(通常はわずか約3μm〜4μm)を保護する。
・ 成形体が、チップ表面の断面全体にわたる電流密度分布の改善を保証する。
・ 成形体が、ばね式接点による摩擦接触中に半導体の損傷を受けやすい表面構造を保護する。これにより、製造ラインにおける非破壊的電気品質試験が単純化される。
・ 機械的応力の対称化により、底部側ホイル及び成形体がディッシング効果(半導体要素の変形)を防ぐ。
・ 上部側及び底部側の搬送ホイルが、ウェハ全体を被覆できる成形体領域を有し、従って成形体との全ての接触面をコスト効率の高い正確な方法で同時に提供できるようになる。
10a パワー半導体チップ
10b 金属化層
10c 金属化層
20a 搬送ホイル
24 成形体
25 成形体
50 ワイヤ
Claims (7)
- 少なくとも1つの上部側電位面と、接続用の太径ワイヤ(50)又はストリップとを有するパワー半導体チップ(10)であって、
前記電位面上の結合層(1)と、
前記(単複の)結合層上の少なくとも1つの金属成形体(24、25)と、
を備え、前記電位面に面する前記金属成形体の下部側平坦面は、前記結合層(1)の結合工程に適するように被覆され、前記成形体の材料組成及び厚みは、前記金属成形体の上部側における前記接続工程で使用される前記太径ワイヤ(50)又はストリップの寸法に従って選択され、さらに、
各成形体(24、25)の下方の結合面は、前記成形体(24、25)よりも小さな投影面を有して、前記成形体(24、25)の周縁が非導電性搬送ホイル(20a)上に取り付けられたままにしておく、
ことを特徴とするパワー半導体チップ。 - 下部側平坦面が銀又はニッケル/金で被覆された成形体(24、25)は、Cu、Ag、Au、Al、Mo、Wの元素群、又はこれらの合金から選択された材料で構成され、前記合金は、前記元素群の金属のうちの1つ又はそれ以上を含む、
ことを特徴とする請求項1に記載のパワー半導体チップ。 - 前記非導電性搬送ホイル(20a)が有機非導電性搬送ホイル(20a)である、
ことを特徴とする請求項1又は2に記載のパワー半導体チップ。 - 前記非導電性搬送ホイル(20a)は、前記チップ表面の結合すべきでない領域に付着して被覆する、
ことを特徴とする請求項1から3のいずれか1項に記載のパワー半導体チップ。 - 前記非導電性搬送ホイル(20a)は、前記チップの外縁にまで広がらない、
ことを特徴とする請求項1から4のいずれか1項に記載のパワー半導体チップ。 - 前記上部側成形体(24、25)に加え、前記パワー半導体(10)の底部側にもさらなる成形体(30)が設けられ、該さらなる成形体(30)は、低温焼結、拡散はんだ付け又は接着によって結合するための結合層を通じて固定される、
ことを特徴とする請求項1から5のいずれか1項に記載のパワー半導体チップ。 - 異なる電位を有する前記上部側電位面の数に対応する複数の成形体(24、25)が設けられる、
ことを特徴とする請求項1から6のいずれか1項に記載のパワー半導体チップ。
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| Application Number | Priority Date | Filing Date | Title |
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| DE102011115887A DE102011115887A1 (de) | 2011-10-15 | 2011-10-15 | Leistungshalbleiterchip mit oberseitigen Potentialflächen |
| DE102011115887.5 | 2011-10-15 | ||
| PCT/EP2012/003787 WO2013053420A1 (de) | 2011-10-15 | 2012-09-10 | Leistungshalbleiterchip mit metallischen formkörpern zum kontaktieren mit dickdrähten oder bändchen sowie verfahren zu dessen herstellung |
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| US (2) | US9318421B2 (ja) |
| EP (1) | EP2766922A1 (ja) |
| JP (1) | JP5837697B2 (ja) |
| CN (1) | CN103890924B (ja) |
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| US11923270B2 (en) | 2020-09-24 | 2024-03-05 | Kabushiki Kaisha Toshiba | Semiconductor device |
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| DE102015113421B4 (de) | 2015-08-14 | 2019-02-21 | Danfoss Silicon Power Gmbh | Verfahren zum Herstellen von Halbleiterchips |
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| DE102016108656A1 (de) * | 2016-05-11 | 2017-11-16 | Danfoss Silicon Power Gmbh | Leistungselektronische Baugruppe mit vibrationsfreier Kontaktierung |
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2011
- 2011-10-15 DE DE102011115887A patent/DE102011115887A1/de active Pending
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- 2012-09-10 WO PCT/EP2012/003787 patent/WO2013053420A1/de not_active Ceased
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| US11923270B2 (en) | 2020-09-24 | 2024-03-05 | Kabushiki Kaisha Toshiba | Semiconductor device |
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| Publication number | Publication date |
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| US9613929B2 (en) | 2017-04-04 |
| CN103890924B (zh) | 2017-02-15 |
| WO2013053420A1 (de) | 2013-04-18 |
| US20140225247A1 (en) | 2014-08-14 |
| CN103890924A (zh) | 2014-06-25 |
| US20160225738A1 (en) | 2016-08-04 |
| EP2766922A1 (de) | 2014-08-20 |
| DE102011115887A1 (de) | 2013-04-18 |
| US9318421B2 (en) | 2016-04-19 |
| JP2014532308A (ja) | 2014-12-04 |
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