JP4891556B2 - 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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- JP4891556B2 JP4891556B2 JP2005085855A JP2005085855A JP4891556B2 JP 4891556 B2 JP4891556 B2 JP 4891556B2 JP 2005085855 A JP2005085855 A JP 2005085855A JP 2005085855 A JP2005085855 A JP 2005085855A JP 4891556 B2 JP4891556 B2 JP 4891556B2
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- film
- solder
- semiconductor device
- alloy layer
- led chip
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Description
(第1実施形態)
まず、図1〜図8を用いて第1実施形態を説明する。
[半導体装置の構成]
図1は本発明の第1実施形態に係るジャンクションダウン構造のLEDチップ10を搭載した半導体装置の構成図である。図1に示すように、この半導体装置は、LEDチップ10(半導体素子)、セラミック基板20(基板)、及びLEDチップ10とセラミック基板20を接合する接合部30を備えている。
図2は同実施形態に係るLEDチップ10の上面図、図3は同実施形態に係るLEDチップ10の正面図、図4は同実施形態に係るLEDチップ10の下面図である。図2〜図4に示すように、このLEDチップ10は、セラミック基板20にダイマウントされる前のものであり、略錐台形状のチップ本体11を備えている。
図5は同実施形態に係るセラミック基板20の平面図である。図5に示すように、このセラミック基板20は、基材21と配線22とから構成されている。基材21は、アルミナを素材としており、そのサイズは約5.0mm×5.0mm×0.3mmである。
粗く、Rzで3.0μm〜7.0μm程度となっている。
図6は同実施形態に係る接合部30の断面図である。図6に示すように、この接合部30は、LEDチップ10側から順に、Ni−Sn合金層もしくはNi−Au−Sn合金層32、Au−Sn合金層33、及びNi−Sn合金層34を備えている。
図7は同実施形態に係るLEDチップ10のダイマウント工程を示す工程図である。最初に、図7(a)に示すように、セラミック基板20の配線22上に副資材としてのはんだペースト40をディスペンスにより供給する。
本実施形態によれば、LEDチップ10のダイマウント接合電極13にSn膜14を形成し、ダイマウント接合電極13とセラミック基板20の配線22とを、このSn膜14とはんだペースト40とで接合している。
次に、図9を用いて本発明の第2実施形態を説明する。
[LEDチップ10のダイマウント工程]
図9は本発明の第2実施形態に係るLEDチップ10のダイマウント工程を一部省略して示す工程図である。図9に示すように、本実施形態では、はんだペースト40の代わりに、副資材としてのAu−Snはんだシート61(Au−Snはんだシート)とフラックス62を使用している。Au−Snはんだシート61のサイズは、ダイマウント接合電極13と略同じで、厚さは10μmである。
このように、はんだペースト40の代わりに、Au−Snはんだシート61とフラックス62を使用しても、前記実施形態と同等の効果を得ることができる。その他の効果については、第1実施形態と同じであるので省略する。
Claims (7)
- 基板に形成された配線上に、接合電極を有する半導体素子を実装する実装工程を備えた半導体装置の製造方法において、
前記実装工程は、
前記配線上に、Au−Sn及びフラックスを有するはんだ材を供給する工程と、
前記はんだ材上に、前記接合電極上にSn膜が形成された前記半導体素子をマウントする工程と、
前記はんだ材及び前記Sn膜を溶融させて、前記はんだ材及び前記Sn膜によりAu−Sn合金層を形成し、且つ、前記配線及び前記接合電極の少なくとも一方と前記Sn膜の少なくとも一部によりSn量が22wt%以上の合金層を形成することで、前記基板と前記半導体素子を接合する工程と、
を具備していることを特徴とする半導体装置の製造方法。 - 前記接合電極の周囲にはパシベーション膜が形成されていることを特徴とする請求項1に記載の半導体装置の製造方法。
- 前記基板は、セラミック材製であって、その表面の粗さがRzで3.0μm〜7.0μmであることを特徴とする請求項1に記載の半導体装置の製造方法。
- 前記はんだ材は、Au−Sn粒子とフラックスからなるはんだペーストであることを特徴とする請求項1乃至請求項3のいずれかに記載の半導体装置の製造方法。
- 基板に形成された配線上に、接合電極を有する半導体素子を実装する実装工程を備えた半導体装置の製造方法において、
前記実装工程は、
前記配線上に、Sn及びフラックスを有するはんだ材を供給する工程と、
前記はんだ材上に、前記接合電極上にAu−Sn膜が形成された前記半導体素子をマウントする工程と、
前記はんだ材及び前記Au−Sn膜を溶融させて、前記はんだ材及び前記Au−Sn膜によりAu−Sn合金層を形成し、且つ、前記配線及び前記接合電極の少なくとも一方と前記はんだ材及び前記Au−Sn膜の少なくとも一方のSnとによりSn量が22wt%以上の合金層を形成することで、前記基板と前記半導体素子を接合する工程と、
を具備していることを特徴とする半導体装置の製造方法。 - 前記接合電極の周囲にはパシベーション膜が形成されていることを特徴とする請求項5に記載の半導体装置の製造方法。
- 前記はんだ材は、Sn粒子とフラックスからなるはんだペーストであることを特徴とする請求項5又は6に記載の半導体装置の製造方法。
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JP2005085855A JP4891556B2 (ja) | 2005-03-24 | 2005-03-24 | 半導体装置の製造方法 |
TW095105131A TW200731431A (en) | 2005-03-24 | 2006-02-15 | Semiconductor device and manufacturing method therefor |
CNB2006100739540A CN100454509C (zh) | 2005-03-24 | 2006-02-28 | 半导体器件及其制造方法 |
US11/277,196 US7781323B2 (en) | 2005-03-24 | 2006-03-22 | Semiconductor device and manufacturing method thereof |
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JP2011162573A Division JP2011223035A (ja) | 2011-07-25 | 2011-07-25 | 半導体装置 |
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US20070281396A1 (en) * | 2006-06-01 | 2007-12-06 | Hung-Tsung Hsu | Method of Dissipating heat, Packaging and Shaping for Light Emitting Diodes |
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US9443903B2 (en) * | 2006-06-30 | 2016-09-13 | Cree, Inc. | Low temperature high strength metal stack for die attachment |
US8643195B2 (en) * | 2006-06-30 | 2014-02-04 | Cree, Inc. | Nickel tin bonding system for semiconductor wafers and devices |
US7910945B2 (en) * | 2006-06-30 | 2011-03-22 | Cree, Inc. | Nickel tin bonding system with barrier layer for semiconductor wafers and devices |
KR100786095B1 (ko) * | 2006-08-10 | 2007-12-21 | 엘지전자 주식회사 | 발광 소자의 구동 시스템 및 그 구동 방법 |
KR101329908B1 (ko) * | 2006-10-13 | 2013-11-14 | 퓨처 라이트 리미티드 라이어빌러티 컴퍼니 | 반도체 발광 소자, 조명 장치 및 반도체 발광 소자의 제조방법 |
JP5426081B2 (ja) * | 2007-06-20 | 2014-02-26 | スタンレー電気株式会社 | 基板接合方法及び半導体装置 |
JP2009054892A (ja) * | 2007-08-28 | 2009-03-12 | Panasonic Electric Works Co Ltd | Ledチップの実装方法 |
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KR100999736B1 (ko) * | 2010-02-17 | 2010-12-08 | 엘지이노텍 주식회사 | 발광 소자, 발광 소자 제조방법 및 라이트 유닛 |
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JP2013172012A (ja) * | 2012-02-21 | 2013-09-02 | Sumitomo Electric Ind Ltd | 半導体装置、及び、半導体装置の作製方法 |
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