JP4329678B2 - 半導体装置に用いるリードフレームの製造方法 - Google Patents
半導体装置に用いるリードフレームの製造方法 Download PDFInfo
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Description
図1は、本発明の第1実施形態に係るリードフレームを用いたQFN構造を有する半導体装置100の概略構成を示す図である。なお、図1および以下の実施形態に示される各図において、リードフレーム10における粗化処理された部分、すなわち粗化処理部10aは太線にて示してある。
図1に示される半導体装置100は、大きくは、素子搭載部11とリード部12とを有するリードフレーム10と、素子搭載部11の上面に樹脂よりなるダイマウント材20を介して搭載されリード部12とボンディングワイヤ40を介して電気的に接続された半導体素子30と、リード部12の外部接続面12aが露出するようにリードフレーム10および半導体素子30を封止するモールド樹脂50とを備えている。
この図1に示される半導体装置100の製造方法について、図2および図3を参照して述べる。
ところで、本実施形態によれば、素子搭載部11とリード部12とを有するリードフレーム10と、素子搭載部11の上面に樹脂よりなるダイマウント材20を介して搭載されリード部12と電気的に接続された半導体素子30と、リード部12の外部接続面12aが露出するようにリードフレーム10および半導体素子30を封止するモールド樹脂50とを備える半導体装置において、リードフレーム10の表面のうちモールド樹脂50の内部に位置する部位の少なくとも一部には、樹脂との密着性を高めるための粗化処理が施されており、リード部12の外部接続面12aには、粗化処理が施されていないことを特徴とする半導体装置100が提供される。
次に、本実施形態の種々の変形例を示す。図5〜図11は本実施形態の第1〜第7の変形例を示す概略断面図である。
本発明の第2実施形態は、本発明の半導体装置に用いる部分的に粗化面を有するリードフレームの他の製造方法を提供するものである。
なお、本発明において、ある面に対して粗化処理が施されていないこととは、当該面に粗化処理がまったく施されていないことだけではなく、それ以外にも、樹脂バリがほとんど発生しない程度に弱く荒らされていることも含むものである。
12…リードフレームのリード部、12a…リード部の外部接続面、
20…ダイマウント材、30…半導体素子、40…ボンディングワイヤ、
50…モールド樹脂、70…マスク。
Claims (5)
- 素子搭載部(11)とリード部(12)とを有するリードフレーム(10)と、
前記素子搭載部(11)の上面に樹脂よりなるダイマウント材(20)を介して搭載され前記リード部(12)と電気的に接続された半導体素子(30)と、
前記リード部(12)の外部接続面(12a)が露出するように前記リードフレーム(10)および前記半導体素子(30)を封止するモールド樹脂(50)とを備え、
前記リードフレーム(10)の表面のうち前記モールド樹脂(50)の内部に位置する部位の少なくとも一部には、樹脂との密着性を高めるための粗化処理が施されており、
前記リード部(12)の前記外部接続面(12a)には、前記粗化処理が施されていない半導体装置における前記リードフレーム(10)を製造するリードフレームの製造方法であって、
前記リードフレーム(10)は、エッチング加工することにより製造されるものであって、
前記エッチング加工を行うときに用いるエッチング用マスク(70)を、前記粗化処理を行うためのマスクとして兼用することを特徴とするリードフレームの製造方法。 - 前記半導体装置において、前記半導体素子(30)と前記リード部(12)の上面とがボンディングワイヤ(40)を介して結線されて電気的に接続されており、
前記リード部(12)の下面が前記外部接続面(12a)として前記モールド樹脂(50)から露出していることを特徴とする請求項1に記載のリードフレームの製造方法。 - 前記半導体装置において、前記素子搭載部(11)の下面も前記モールド樹脂(50)から露出しており、当該下面にも、前記粗化処理が施されていないことを特徴とする請求項1または2に記載のリードフレームの製造方法。
- 前記半導体装置において、前記素子搭載部(11)の上面に、前記粗化処理が施されていることを特徴とする請求項1ないし3のいずれか1つに記載のリードフレームの製造方法。
- 前記半導体装置において、前記リード部(12)における前記モールド樹脂(50)との接触面に、前記粗化処理が施されていることを特徴とする請求項1ないし4のいずれか1つに記載のリードフレームの製造方法。
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JP2008103455A (ja) * | 2006-10-18 | 2008-05-01 | Nec Electronics Corp | 半導体装置および半導体装置の製造方法 |
JP2008258411A (ja) | 2007-04-05 | 2008-10-23 | Rohm Co Ltd | 半導体装置および半導体装置の製造方法 |
JP5217800B2 (ja) | 2008-09-03 | 2013-06-19 | 日亜化学工業株式会社 | 発光装置、樹脂パッケージ、樹脂成形体並びにこれらの製造方法 |
JP4472773B1 (ja) * | 2009-01-06 | 2010-06-02 | 日電精密工業株式会社 | リードフレームの製造方法及びリードフレーム、ヒートシンクの製造方法及びヒートシンク |
JP2010245417A (ja) * | 2009-04-09 | 2010-10-28 | Renesas Electronics Corp | 半導体装置およびその製造方法 |
JP4892033B2 (ja) * | 2009-05-13 | 2012-03-07 | 日立ケーブルプレシジョン株式会社 | リードフレームの製造方法 |
JP5813335B2 (ja) * | 2011-02-08 | 2015-11-17 | 新光電気工業株式会社 | リードフレーム、半導体装置、リードフレームの製造方法及び半導体装置の製造方法 |
JP2013105849A (ja) * | 2011-11-11 | 2013-05-30 | Shindengen Electric Mfg Co Ltd | 半導体装置 |
JP2013048280A (ja) * | 2012-10-30 | 2013-03-07 | Renesas Electronics Corp | 半導体装置の製造方法 |
JP6129315B2 (ja) | 2013-07-05 | 2017-05-17 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
EP3285289A4 (en) * | 2015-04-15 | 2018-11-07 | Mitsubishi Electric Corporation | Semiconductor device |
JP6603538B2 (ja) * | 2015-10-23 | 2019-11-06 | 新光電気工業株式会社 | リードフレーム及びその製造方法 |
JP6685112B2 (ja) * | 2015-11-18 | 2020-04-22 | 株式会社三井ハイテック | リードフレーム及びリードフレームパッケージ、並びにこれらの製造方法 |
WO2018061711A1 (ja) * | 2016-09-27 | 2018-04-05 | パナソニックIpマネジメント株式会社 | 半導体装置および製造方法 |
JP2018081967A (ja) * | 2016-11-14 | 2018-05-24 | 株式会社デンソー | 半導体装置およびその製造方法 |
JP2017108191A (ja) * | 2017-03-24 | 2017-06-15 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
JP6269887B2 (ja) * | 2017-06-29 | 2018-01-31 | 大日本印刷株式会社 | 半導体装置の製造方法、およびリードフレームの製造方法 |
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JPS6455291A (en) * | 1987-08-26 | 1989-03-02 | Matsushita Electric Ind Co Ltd | Integrated circuit device |
JPH02209759A (ja) * | 1989-02-09 | 1990-08-21 | Shinko Electric Ind Co Ltd | リードフレーム |
JP2002184792A (ja) * | 2000-12-18 | 2002-06-28 | Toshiba Corp | 半導体装置および製造方法 |
JP2002226797A (ja) * | 2001-01-29 | 2002-08-14 | Nitto Denko Corp | 耐熱性粘着テープおよび半導体装置の製造方法 |
JP3618316B2 (ja) * | 2001-11-21 | 2005-02-09 | 株式会社三井ハイテック | 半導体装置の製造方法 |
JP2003303919A (ja) * | 2002-04-10 | 2003-10-24 | Hitachi Ltd | 半導体装置及びその製造方法 |
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