JP4863746B2 - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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Description
図2〜図7は、本発明の一実施形態による半導体装置の製造方法を示す。
[比較例]
これに対し、同じ構造を無電解メッキ層42a,42bなしで形成した場合、得られる接合強度は約85MPaであり、所期の接合強度が確保できているが、スタッドバンプ幅の増加率が32.5%に達し、半導体装置には深刻な高周波特性の劣化が生じてしまう。
[第2の実施形態]
図9,10は、本発明の第2の実施形態による半導体装置の工程の一部を示す。ただし図中、先に説明した部分には同一の参照符号を付し、説明を省略する。
以上の説明では本発明を、Auスタッドバンプを超音波接合した半導体装置の例で説明したが、本発明はこのような純粋なAuスタッドバンプを使う半導体装置に限定されるものではなく、同様のスタッドバンプに補強被膜を形成することによる半導体装置の特性劣化の抑制は、前記バンプ材料として、Au,Ag、Sn,Pbの少なくとも一つを含む金属材料を使った場合でも有効である。
前記実装基板上に、金属バンプを介して実装された半導体チップとよりなる半導体装置において、
前記金属バンプは、前記半導体チップと接合された内側部分と、前記内側部分を覆う外側部分とよりなり、
前記外側部分は、前記内側部分よりも硬度が大きいことを特徴とする半導体装置。
前記外側部分は、1〜5μmの膜厚を有することを特徴とする付記1または2記載の半導体装置。
前記内側部分は第1の平均粒径を有し、前記外側部分は、前記第1の平均粒径よりも小さい第2の平均粒径を有することを特徴とする付記1〜3のうち、いずれか一項記載の半導体装置。
前記外側部分は、前記内側部分の上に無電解メッキを行うことにより形成されたことを特徴とする付記1〜4のうち、いずれか一項記載の半導体装置。
前記外側部分は、前記内側部分の上に、電解メッキを行うことにより形成されたことを特徴とする付記1〜4のうち、いずれか一項記載の半導体装置。
前記内側部分は、Au,Ag,Sn,Pbの少なくとも一つより構成されることを特徴とする付記1〜6のうち、いずれか一項記載の半導体装置。
前記外側部分は、Au,Ag,Sn,Pb,Cu,Sn,Pbの少なくとも一つ以上の金属で構成されることを特徴とする付記1〜7のうち、いずれか一項記載の半導体装置。
前記半導体チップは高周波ないしマイクロ波またはミリ波半導体装置であることを特徴とする付記1〜8のうち、いずれか一項記載の半導体装置。
前記実装基板は、樹脂基板であることを特徴とする付記1〜9のうち、いずれか一項記載の半導体装置。
実装基板上に半導体チップをフリップチップ法により実装する工程を含む半導体装置の製造方法であって、
前記実装基板上に金属バンプを形成する工程と、
前記金属バンプにメッキ膜を形成する工程と、を含み、
前記フリップチップ実装工程は、
前記半導体チップを前記金属バンプに対し、前記電極パッドが前記金属バンプに付勢されるように押圧する工程と、
前記半導体チップに超音波を印加し、前記金属バンプを前記電極パッドに超音波接合する工程と、を含むことを特徴とする半導体装置の製造方法。
実装基板上に半導体チップをフリップチップ実装する工程を含む半導体装置の製造方法であって、
前記実装基板上に、金属メッキ膜を形成した金属線により、金属バンプを形成する工程と、
前記半導体チップを前記実装基板上において前記金属バンプに対し、前記半導体チップ上の電極パッドが前記金属バンプに付勢されるように押圧する工程と、
前記半導体チップに超音波を印加し、前記金属バンプを前記電極に超音波接合する工程と、を含むことを特徴とする半導体装置の製造方法。
前記押圧工程の前に、前記金属バンプの先端部を加工し、前記金属線よりなる部分を前記先端部において露出する工程を含むことを特徴とする付記11または12記載の半導体装置の製造方法。
41A,41B 配線パターン
41a,41b Ni無電解メッキ膜
41c,41d Au膜
42A,42B バルクAu
42a,42b Auメッキ被膜
43A,43B スタッドバンプ
51 半導体チップ
52 樹脂封止層
52A 配線パターン
53 保護膜
53A,53B バンプ電極
Claims (8)
- 実装基板と、
前記実装基板上に、金属バンプを介して実装された半導体チップとよりなる半導体装置において、
前記金属バンプは、前記実装基板の電極パッドに接合され先端部が前記半導体チップの電極パッドに接合された内側部分と、前記内側部分を覆う外側部分とよりなり、
前記外側部分は、前記内側部分よりも硬度が大きいことを特徴とする半導体装置。 - 前記外側部分は、1〜5μmの膜厚を有することを特徴とする請求項1記載の半導体装置。
- 前記内側部分は第1の平均粒径を有し、前記外側部分は、前記第1の平均粒径よりも小さい第2の平均粒径を有することを特徴とする請求項1または2記載の半導体装置。
- 前記内側部分は、Au,Ag,Sn,Pbの少なくとも一つより構成されることを特徴とする請求項1〜3のうち、いずれか一項記載の半導体装置。
- 前記外側部分は、Au,Ag,Sn,Pb,Cu,Sn,Pbの少なくとも一つ以上の金属で構成されることを特徴とする請求項1〜4のうち、いずれか一項記載の半導体装置。
- 前記半導体チップは高周波ないしマイクロ波またはミリ波半導体装置であることを特徴とする請求項1〜5のうち、いずれか一項記載の半導体装置。
- 前記実装基板は、樹脂基板であることを特徴とする請求項1〜6のうち、いずれか一項記載の半導体装置。
- 実装基板上に半導体チップをフリップチップ法により実装する工程を含む半導体装置の製造方法であって、
前記実装基板上に金属スタッドを接合する工程と、
前記金属スタッドにメッキ膜を形成し金属バンプを形成する工程と、を含み、
前記メッキ膜は前記金属スタッドよりも大きな硬度を有し、
前記フリップチップ実装工程は、
前記半導体チップを前記金属バンプに対し、電極パッドが前記金属バンプの先端部に付勢されるように押圧する工程と、
前記半導体チップに超音波を印加し、前記金属バンプを前記電極パッドに超音波接合する工程と、を含み、
前記押圧工程の前に、前記金属バンプの先端部を加工し、前記金属スタッドを前記先端部において露出する工程を含み、
前記超音波接合工程では、前記先端部において露出した金属スタッドが、前記電極パッドに接合されることを特徴とする半導体装置の製造方法。
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US11/483,527 US7429796B2 (en) | 2006-03-27 | 2006-07-11 | Semiconductor device and fabrication process thereof |
TW095125781A TWI323920B (en) | 2006-03-27 | 2006-07-14 | Semiconductor device and fabrication process thereof |
CN200610107504A CN100594603C (zh) | 2006-03-27 | 2006-07-27 | 半导体器件及其制造方法 |
KR1020060071255A KR100873881B1 (ko) | 2006-03-27 | 2006-07-28 | 반도체 장치 및 그 제조 방법 |
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US20090014852A1 (en) * | 2007-07-11 | 2009-01-15 | Hsin-Hui Lee | Flip-Chip Packaging with Stud Bumps |
DE102008042107A1 (de) * | 2008-09-15 | 2010-03-18 | Robert Bosch Gmbh | Elektronisches Bauteil sowie Verfahren zu seiner Herstellung |
JP5140565B2 (ja) * | 2008-11-28 | 2013-02-06 | 三洋電機株式会社 | 素子搭載用基板、半導体モジュール、および携帯機器 |
US8476757B2 (en) * | 2009-10-02 | 2013-07-02 | Northrop Grumman Systems Corporation | Flip chip interconnect method and design for GaAs MMIC applications |
CN102931108B (zh) * | 2012-10-10 | 2014-04-30 | 矽力杰半导体技术(杭州)有限公司 | 一种倒装芯片封装方法 |
TWI395313B (zh) | 2012-11-07 | 2013-05-01 | Wire technology co ltd | 銲球凸塊結構及其形成方法 |
US8916448B2 (en) | 2013-01-09 | 2014-12-23 | International Business Machines Corporation | Metal to metal bonding for stacked (3D) integrated circuits |
TWI514530B (zh) * | 2013-08-28 | 2015-12-21 | Via Tech Inc | 線路基板、半導體封裝結構及線路基板製程 |
CN112292492B (zh) * | 2018-06-27 | 2022-06-03 | 沃尔沃建筑设备公司 | 用于对运土设备中的工具的快速联接进行安全管理的方法和系统 |
US11063015B2 (en) | 2019-07-24 | 2021-07-13 | Advanced Semiconductor Engineering, Inc. | Semiconductor device package and method of manufacturing the same |
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JP2839579B2 (ja) * | 1989-10-02 | 1998-12-16 | 株式会社東芝 | 半導体装置及びその製造方法 |
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JPWO2003007370A1 (ja) * | 2001-07-12 | 2004-11-04 | 株式会社日立製作所 | 配線ガラス基板およびその製造方法ならびに配線ガラス基板に用いられる導電性ペーストおよび半導体モジュールならびに配線基板および導体形成方法 |
AU2003218085A1 (en) * | 2002-03-12 | 2003-09-29 | Fairchild Semiconductor Corporation | Wafer-level coated copper stud bumps |
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US20070222085A1 (en) | 2007-09-27 |
US7754536B2 (en) | 2010-07-13 |
US7429796B2 (en) | 2008-09-30 |
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