JP6354467B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP6354467B2 JP6354467B2 JP2014177044A JP2014177044A JP6354467B2 JP 6354467 B2 JP6354467 B2 JP 6354467B2 JP 2014177044 A JP2014177044 A JP 2014177044A JP 2014177044 A JP2014177044 A JP 2014177044A JP 6354467 B2 JP6354467 B2 JP 6354467B2
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- pad
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- intermetallic compound
- semiconductor element
- bonding
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Description
本発明の第1実施形態にかかる半導体装置S1について、図1〜図3を参照して述べる。なお、図1に示される平面図中では、モールド樹脂60の外形を示してあるが、このモールド樹脂60の内部に位置する構成要素を、モールド樹脂60を透過して示している。この半導体装置S1は、たとえば自動車などの車両に搭載され、車両用の各種電子装置を駆動するための装置として適用されるものである。
本発明の第2実施形態にかかる半導体装置について図6を参照して、上記第1実施形態との相違点を中心に述べる。通常、半導体素子10の一面11には、ワイヤボンディング用の電極パッド21、22以外に、装置特性を検査するための検査用の電極パッド、すなわち検査用パッド23が設けられる。
本発明の第3実施形態にかかる半導体装置について、図6、図7を参照して、上記第1実施形態との相違点を中心に述べる。なお、本実施形態は、上記第2実施形態とも組み合わせが可能であることは言うまでも無い。
なお、上記第1実施形態では、各電極パッド21、22について、電極パッド21、22側を一次側としてボンディングワイヤ51、52の一端側をボールボンディングし、リード端子40側を二次側としてボンディングワイヤ51、52の他端側をウェッジボンディングするものとした。
13 半導体素子のコーナー
21 電極パッドとしての第1のパッド
22 電極パッドとしての第2のパッド
40 接続部材としてのリード端子
51 ボンディングワイヤとしての第1のワイヤ
52 ボンディングワイヤとしての第2のワイヤ
53 バンプ
71 第1のパッド側の金属間化合物層
72 第2のパッド側の金属間化合物層(第2の金属間化合物層)
73 第1の金属間化合物層
Claims (4)
- 一面(11)と他面(12)とが表裏の板面の関係にある矩形板状をなす半導体素子(10)と、
前記半導体素子の一面に設けられた同一の金属よりなる複数個の電極パッド(21、22)と、
前記半導体素子の外側に設けられた接続部材(40)と、を備え、
前記複数個の電極パッドのそれぞれが、金属よりなるボンディングワイヤ(51、52)を介して前記接続部材と接続されており、
前記複数個の電極パッドのそれぞれにおいて、当該電極パッドと前記ボンディングワイヤとの間には、当該電極パッドの金属と前記ボンディングワイヤの金属との両者を含む金属間化合物よりなる金属間化合物層(71、72)が形成されている半導体装置であって、
前記複数個の電極パッドは、前記半導体素子の一面においてコーナー(13)側に位置する第1のパッド(21)と、前記第1のパッドよりも前記コーナーから遠くに位置する第2のパッド(22)とに区別されており、
前記ボンディングワイヤのうち前記第1のパッドに接続されている第1のワイヤ(51)は、前記ボンディングワイヤのうち前記第2のパッドに接続されている第2のワイヤ(52)よりもヤング率が小さいものとされ、
前記第1のワイヤと前記第1のパッドにより形成される前記金属間化合物層(71)の厚さ(d1)は、前記第2のワイヤと前記第2のパッドにより形成される前記金属間化合物層(72)の厚さ(d2)よりも厚いものとされていることを特徴とする半導体装置。 - 前記第1のパッドおよび前記第2のパッドは、AlもしくはAlを主成分とするAl合金よりなることを特徴とする請求項1に記載の半導体装置。
- 前記第1のワイヤはAuもしくはAuを主成分とするAu合金よりなり、前記第2のワイヤはCuもしくはCuを主成分とするCu合金よりなることを特徴とする請求項1または2に記載の半導体装置。
- 一面(11)と他面(12)とが表裏の板面の関係にある矩形板状をなす半導体素子(10)と、
前記半導体素子の一面に設けられた同一の金属よりなる複数個の電極パッド(21、22)と、
前記半導体素子の外側に設けられた接続部材(40)と、を備え、
前記複数個の電極パッドのそれぞれが、同一の金属よりなるボンディングワイヤ(52)を介して前記接続部材と接続されている半導体装置であって、
前記複数個の電極パッドは、前記半導体素子の一面においてコーナー(13)側に位置する第1のパッド(21)と、前記第1のパッドよりも前記コーナーから遠くに位置する第2のパッド(22)とに区別されており、
前記第1のパッド上には、前記ボンディングワイヤよりもヤング率が小さい金属よりなるバンプ(53)が接合されており、
前記第1のパッドと前記バンプとの間には、当該第1のパッドの金属と当該バンプの金属との両者を含む金属間化合物よりなる第1の金属間化合物層(73)が形成されており、
前記第1のパッドと前記接続部材とを接続する前記ボンディングワイヤは、前記第1のパッドとは前記バンプを介してボンディングされたものとなっており、
前記第2のパッドと前記第2のパッドに接続されている前記ボンディングワイヤとの間には、当該第2のパッドの金属と当該ボンディングワイヤの金属との両者を含む金属間化合物よりなる第2の金属間化合物層(72)が形成されており、
前記第1の金属間化合物層の厚さ(d3)は、前記第2の金属間化合物層の厚さ(d2)よりも厚いものとされていることを特徴とする半導体装置。
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JP2014177044A JP6354467B2 (ja) | 2014-09-01 | 2014-09-01 | 半導体装置 |
CN201580046019.2A CN106796896B (zh) | 2014-09-01 | 2015-07-31 | 半导体装置 |
US15/505,273 US10002841B2 (en) | 2014-09-01 | 2015-07-31 | Semiconductor device |
PCT/JP2015/003860 WO2016035251A1 (ja) | 2014-09-01 | 2015-07-31 | 半導体装置 |
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US8125091B2 (en) * | 2008-03-18 | 2012-02-28 | Lsi Corporation | Wire bonding over active circuits |
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