JPWO2014033983A1 - 部品実装構造体 - Google Patents
部品実装構造体 Download PDFInfo
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- JPWO2014033983A1 JPWO2014033983A1 JP2014532733A JP2014532733A JPWO2014033983A1 JP WO2014033983 A1 JPWO2014033983 A1 JP WO2014033983A1 JP 2014532733 A JP2014532733 A JP 2014532733A JP 2014532733 A JP2014532733 A JP 2014532733A JP WO2014033983 A1 JPWO2014033983 A1 JP WO2014033983A1
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Abstract
Description
前記複数の第1電極の各々と対応する、第2電極を有する、電子部品としての第2対象物と、
前記第1電極と、対応する前記第2電極とを接合する接合部と、
前記接合部の少なくとも一部を覆う樹脂補強部と、
を含み、
前記接合部が、第1金属および樹脂粒子の少なくとも一方を含む第1コア、並びに、前記第1コアの表面を覆うとともに、前記第1金属と、前記第1金属よりも融点の低い第2金属との金属間化合物を含む第1金属間化合物層を有し、
前記樹脂補強部が、前記第1電極と前記第2電極との間の空間に存在する第1部分と、それ以外の第2部分とを有し、
前記第2部分は、前記第1金属および前記樹脂粒子の少なくとも一方を含む第2コアと、前記第1金属と前記第2金属との金属間化合物を含む第2金属間化合物層と、を含む粒状物、を含み、
前記第2部分における前記粒状物の含有量が0.1〜10体積%である。
図1に、本発明の一実施形態に係る部品実装構造体を製造するための、電子部品実装システムの一例である実装ラインをブロック図により示す。図2に、本発明の一実施形態に係る部品実装構造体を断面図により示す。
先ず、図5に示すように、基板供給ユニット1により供給された基板14に対し、混合物供給ユニット2により、半田−樹脂混合物26を、基板14の電子部品12が搭載される領域である搭載領域AR1に供給する。搭載領域AR1には、電子部品12の部品電極16と接合されるランド電極18が全て形成されている。
(実施形態2)
図11Aに、本実施形態に係る部品実装構造体を一部断面図により示す。図11Bに、本実施形態に係る部品実装構造体を製造するのに使用される粒状物前駆体を断面図により示す。
(実施形態3)
図12に、本実施形態の部品実装構造体の要部を拡大して示す。実施形態3の部品実装体においては、樹脂補強部29がシリカ(SiO2)、およびアルミナ等の無機フィラーを含んでいる。本実施形態の部品実装構造体は、上記のような無機フィラーを含ませた半田−樹脂混合物を使用して製造することができる。それ以外は、実施形態1および実施形態2の部品実装方法および部品実装システムと同様の方法およびシステムにより、本実施形態の部品実装構造体を製造することができる。
図14に、本発明の部品実装構造体を製造するための部品実装システムの他の一例である実装ラインをブロック図により示す。図示例のライン10Aは、実施形態1のライン10と同様に、フレキシブル基板に半導体チップ等を搭載したモジュールである電子部品12を、電子機器の回路基板であるリジッドまたはフレキシブルな基板14に実装するための実装ラインである。ライン10Aは、基板14をラインに供給する基板供給ユニット1、半田−樹脂混合物を基板14の電極であるランド電極18に供給するための混合物供給ユニット2、および構造体回収ユニット4を含む点で、実施形態1のライン10と同様である。
Claims (12)
- 複数の第1電極を有する第1対象物と、
前記複数の第1電極の各々と対応する、第2電極を有する、電子部品としての第2対象物と、
前記第1電極と、対応する前記第2電極とを接合する接合部と、
前記接合部の少なくとも一部を覆う樹脂補強部と、
を含み、
前記接合部が、第1金属および樹脂粒子の少なくとも一方を含む第1コア、並びに、前記第1コアの表面を覆うとともに、前記第1金属と、前記第1金属よりも融点の低い第2金属との金属間化合物を含む第1金属間化合物層を有し、
前記樹脂補強部が、前記第1電極と前記第2電極との間の空間に存在する第1部分と、それ以外の第2部分とを有し、
前記第2部分は、前記第1金属および前記樹脂粒子の少なくとも一方を含む第2コアと、前記第1金属と前記第2金属との金属間化合物を含む第2金属間化合物層と、を含む粒状物、を含み、
前記第2部分における前記粒状物の含有量が0.1〜10体積%である、部品実装構造体。 - 前記接合部が、前記第1金属間化合物層の表面を覆う、前記第2金属を含む第1半田層を有する、請求項1記載の部品実装構造体。
- 前記粒状物が、前記第2金属間化合物層の表面を覆う、前記第2金属を含む第2半田層を有する、請求項1または2記載の部品実装構造体。
- 前記第1金属が、前記樹脂粒子と前記第1半田層との間に介在している、請求項2記載の部品実装構造体。
- 前記第1金属が、前記樹脂粒子と前記第2半田層との間に介在している、請求項3記載の部品実装構造体。
- 前記第1金属が、Cuを含む、請求項1〜5のいずれか1項に記載の部品実装構造体。
- 前記第2金属が、Sn,Pb,Ag,Zn,Bi,In,CuおよびSbよりなる群から選択される少なくとも1種を含む、請求項1〜6のいずれか1項に記載の部品実装構造体。
- 前記樹脂補強部が、さらに、前記粒状物よりも平均粒子径の小さい無機フィラーを含む、請求項1〜7のいずれか1項に記載の部品実装構造体。
- 前記第1対象物および前記第2対象物が、いずれもフレキシブル基板を含む、請求項1〜8のいずれか1項に記載の部品実装構造体。
- 前記第2対象物が、フレキシブル基板を含み、前記第1対象物が、リジッド基板を含む、請求項1〜8のいずれか1項に記載の部品実装構造体。
- 前記第2対象物が、半導体チップを含み、前記第1対象物が、フレキシブル基板またはリジッド基板を含む、請求項1〜8のいずれか1項に記載の部品実装構造体。
- 前記第1対象物および前記第2対象物が、いずれも半導体チップを含む、請求項1〜8のいずれか1項に記載の部品実装構造体。
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