JP4949718B2 - 電子部品実装構造 - Google Patents
電子部品実装構造 Download PDFInfo
- Publication number
- JP4949718B2 JP4949718B2 JP2006105249A JP2006105249A JP4949718B2 JP 4949718 B2 JP4949718 B2 JP 4949718B2 JP 2006105249 A JP2006105249 A JP 2006105249A JP 2006105249 A JP2006105249 A JP 2006105249A JP 4949718 B2 JP4949718 B2 JP 4949718B2
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- Prior art keywords
- solder
- insulating substrate
- electronic component
- metal region
- electrode
- Prior art date
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
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- H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
- H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
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- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/303—Surface mounted components, e.g. affixing before soldering, aligning means, spacing means
- H05K3/305—Affixing by adhesive
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Description
よって、前記電子部品と絶縁基板間の接合強度を強くする必要があった。
表面に電極が設けられた絶縁基板と、前記電極と電気的に接続される端子を備えた電子部品と、を有し、
前記絶縁基板と前記電子部品のどちらか一方の対向面には、他方の対向面の非金属領域と対向する位置に、第1の金属領域が形成され、
前記第1の金属領域と前記非金属領域間は、低融点半田の半田粒子と熱硬化性樹脂を主成分とする半田接着剤により接合され、前記半田粒子は前記第1の金属領域側に凝集して半田層を形成し、前記半田層は前記非金属領域から離れて形成されており、前記熱硬化性樹脂は、前記半田層が形成された前記第1の金属領域と前記非金属領域間を接着しており、
前記第1の金属領域は、前記電子部品の裏面にて前記端子と電気的に分離した位置であって前記絶縁基板の表面に形成された前記電極と高さ方向にて対向しない位置に形成され、前記非金属領域は、前記第1の金属領域と高さ方向にて対向する前記絶縁基板の表面であり、
前記電極に接続される配線層を備え、前記電極及び前記配線層は、金属粉及び樹脂成分を含み、前記電極は、前記配線層よりも前記樹脂成分が少ないことを特徴とするものである。
また本発明では、前記低融点半田は、SnBi、SnBiAg、SnZn、SnZnBi、SnZnIn、SnAgBiIn、SnAgCuBi、SnIn、あるいは、SnBiInからなり、または、これら合金にAl、Ag、Cu、Ge、あるいはNiを添加してなることが好ましい。また、前記熱硬化性樹脂は、エポキシ樹脂、フェノール樹脂、メラミン樹脂、尿素樹脂、あるいは、ポリエステル樹脂により形成されることが好ましい、
また本発明では、前記第1の金属領域と前記非金属領域間の高さ方向への間隔は、前記電極と前記端子間の高さ方向への間隔よりも大きいことが好ましい。
このように実施例は比較例に比べて飛躍的に接合強度を向上できることがわかった。
2 配線部材
3 電極
4 電子部品
5 端子
6 アース電極(金属膜)
8 アース端子(金属膜)
10、11、12 半田層
13 樹脂層
20、21、22 半田接着剤
Claims (7)
- 表面に電極が設けられた絶縁基板と、前記電極と電気的に接続される端子を備えた電子部品と、を有し、
前記絶縁基板と前記電子部品のどちらか一方の対向面には、他方の対向面の非金属領域と対向する位置に、第1の金属領域が形成され、
前記第1の金属領域と前記非金属領域間は、低融点半田の半田粒子と熱硬化性樹脂を主成分とする半田接着剤により接合され、前記半田粒子は前記第1の金属領域側に凝集して半田層を形成し、前記半田層は前記非金属領域から離れて形成されており、前記熱硬化性樹脂は、前記半田層が形成された前記第1の金属領域と前記非金属領域間を接着しており、
前記第1の金属領域は、前記電子部品の裏面にて前記端子と電気的に分離した位置であって前記絶縁基板の表面に形成された前記電極と高さ方向にて対向しない位置に形成され、前記非金属領域は、前記第1の金属領域と高さ方向にて対向する前記絶縁基板の表面であり、
前記電極に接続される配線層を備え、前記電極及び前記配線層は、金属粉及び樹脂成分を含み、前記電極は、前記配線層よりも前記樹脂成分が少ないことを特徴とする電子部品実装構造。 - 前記電極と前記端子間は、前記第1の金属領域と前記非金属領域間を接合するのに用いた前記半田接着剤と同じ半田接着剤により半田接合されている請求項1記載の電子部品実装構造。
- 前記絶縁基板の表面には、前記電子部品の裏面に形成された前記第1の金属領域との対向領域の一部に、第2の金属領域が形成され、残りの前記対向領域に前記非金属領域としての前記絶縁基板の表面が露出しており、前記第1の金属領域と前記第2の金属領域間は、前記第1の金属領域と前記絶縁基板表面間の接合に用いた前記半田接着剤と同じ半田接着剤によって半田接合されている請求項1又は2に記載の電子部品実装構造。
- 前記第2の金属領域は囲み形状であり、前記囲み形状内に前記非金属領域としての前記絶縁基板の表面が露出し、前記囲み形状内の前記絶縁基板表面と前記第1の金属領域間が前記半田接着剤により接合されている請求項3記載の電子部品実装構造。
- 前記低融点半田は、SnBi、SnBiAg、SnZn、SnZnBi、SnZnIn、SnAgBiIn、SnAgCuBi、SnIn、あるいは、SnBiInからなり、または、これら合金にAl、Ag、Cu、Ge、あるいはNiを添加してなる請求項1ないし4のいずれか1項に記載の電子部品実装構造。
- 前記熱硬化性樹脂は、エポキシ樹脂、フェノール樹脂、メラミン樹脂、尿素樹脂、あるいは、ポリエステル樹脂により形成される請求項1ないし5のいずれか1項に記載の電子部品実装構造。
- 前記第1の金属領域と前記非金属領域間の高さ方向への間隔は、前記電極と前記端子間の高さ方向への間隔よりも大きい請求項1ないし6のいずれか1項に記載の電子部品実装構造。
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JP4522939B2 (ja) * | 2005-10-31 | 2010-08-11 | アルプス電気株式会社 | 基板と部品間の接合構造及びその製造方法 |
JP5407967B2 (ja) * | 2010-03-19 | 2014-02-05 | 富士通株式会社 | 回路基板、電子機器、回路基板の製造方法、及び半導体装置の交換方法 |
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JPS61156246A (ja) * | 1984-12-28 | 1986-07-15 | Canon Inc | マイクロフイツシユキヤリア |
JPH0411797A (ja) * | 1990-04-28 | 1992-01-16 | Sharp Corp | 回路基板の接続構造 |
JP3724606B2 (ja) * | 1995-05-22 | 2005-12-07 | 日立化成工業株式会社 | 半導体チップの接続構造及びこれに用いる配線基板 |
JP3278055B2 (ja) * | 1998-06-30 | 2002-04-30 | セイコーインスツルメンツ株式会社 | 電子回路装置 |
JP2001170798A (ja) * | 1999-10-05 | 2001-06-26 | Tdk Corp | はんだ付け用フラックス、はんだぺ一スト、電子部品装置、電子回路モジュール、電子回路装置、及び、はんだ付け方法 |
US6580159B1 (en) * | 1999-11-05 | 2003-06-17 | Amkor Technology, Inc. | Integrated circuit device packages and substrates for making the packages |
JP2002064257A (ja) * | 2000-08-22 | 2002-02-28 | Sony Corp | フレキシブルプリント基板及び半導体チップ実装カード |
US6854633B1 (en) * | 2002-02-05 | 2005-02-15 | Micron Technology, Inc. | System with polymer masking flux for fabricating external contacts on semiconductor components |
JP4475976B2 (ja) * | 2004-02-23 | 2010-06-09 | 三菱電機株式会社 | 気密封止パッケージ |
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