JP4696110B2 - 電子部品の実装方法及び電子部品実装装置 - Google Patents
電子部品の実装方法及び電子部品実装装置 Download PDFInfo
- Publication number
- JP4696110B2 JP4696110B2 JP2007508221A JP2007508221A JP4696110B2 JP 4696110 B2 JP4696110 B2 JP 4696110B2 JP 2007508221 A JP2007508221 A JP 2007508221A JP 2007508221 A JP2007508221 A JP 2007508221A JP 4696110 B2 JP4696110 B2 JP 4696110B2
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- Prior art keywords
- electronic component
- wiring board
- connection terminal
- solder
- electrode terminal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Images
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- H01L23/488—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of soldered or bonded constructions
- H01L23/498—Leads, i.e. metallisations or lead-frames on insulating substrates, e.g. chip carriers
- H01L23/49811—Additional leads joined to the metallisation on the insulating substrate, e.g. pins, bumps, wires, flat leads
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
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- Manufacturing & Machinery (AREA)
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electric Connection Of Electric Components To Printed Circuits (AREA)
- Wire Bonding (AREA)
Description
・配線基板上の所定位置にはんだペーストを塗布してから電子部品を配置する、
・はんだペーストを溶融温度以上に溶融させて電子部品のリードを配線基板のランドにはんだ付けする、
・リードとランドとのすべての接続点ではんだペーストが溶融した後、いずれかの接続点が凝固点以下まで冷却されるまでの間に配線基板を振動させる、
という工程を有する。(例えば、特許文献1参照)。
・ボンディングツールに半導体チップを保持し配線基板に対して位置合わせする、
・位置合わせした半導体チップのはんだバンプを配線基板上の所定位置の電極パッドに接触させる、
・はんだバンプを加熱して溶融させる、
・溶融中に、配線基板と半導体チップとの間隔を調整する、
・溶融後に溶融したはんだバンプのセルフアライメント作用によりボンディングツールをXYθ方向に駆動させて配線基板と半導体チップの位置ずれを補正する、
という工程を有する(例えば、特許文献2参照)。
前記配線基板と前記電子部品とのうちの一方を固定する第1の工程と、
固定された前記配線基板または前記電子部品が有する、接続端子形成領域または電極端子形成面に、はんだ粉、対流添加剤、および前記はんだ粉の溶融温度で流動性を有する樹脂を含む樹脂組成物を、前記接続端子形成領域または前記電極端子形成面に形成された複数の接続端子または複数の電極端子をまたがるように塗布する第2の工程と、
固定されていない前記配線基板または前記電子部品を把持した状態で、前記電子部品の前記電極端子と前記配線基板の前記接続端子とを、前記樹脂組成物を介在させて当接させる第3の工程と、
部品搭載ツールにより前記電子部品を把持したうえで、前記電極端子と前記接続端子とを当接させた状態を保持しながら、前記配線基板および前記電子部品の少なくとも一方を加熱して、前記電極端子と前記接続端子とを前記はんだ粉により接合する第4の工程と、
を含み、
前記第4の工程では、前記はんだ粉を溶融させるとともに前記対流添加剤により前記はんだ粉を前記電極端子と前記接続端子との間に自己集合させた状態で、溶融させた前記はんだ粉を成長させて前記電極端子と前記接続端子とをはんだ接続する電子部品の実装方法であって、
前記第2の工程では、前記はんだ粉の溶融する温度でガスを発生させる特性を有する前記対流添加物を、前記樹脂組成物に含ませ、
前記第4の工程では、前記対流添加物を沸騰あるいは分解させて前記樹脂組成物中にガスを発生させて当該ガスを前記樹脂組成物中で対流させることで、前記はんだ粉を前記電極端子と前記接続端子との周辺に集合させて前記電極端子と接続端子とを電気的に接続することを特徴とする。
さらなる加熱を行い前記樹脂組成物中の樹脂を硬化させる第5の工程と、
前記樹脂が硬化した後、前記部品搭載ツールによる前記電子部品の把持を解除する第6の工程と、
を含んでもよい。
チップ部品やCSPパッケージやベアチップから選ばれる少なくとも一つの電極端子を有する電子部品を、接続端子を有する配線基板に、はんだを介して実装する電子部品実装装置であって、
前記電子部品と前記配線基板とのうちの一方を固定する固定台と、
前記固定台により固定された前記電子部品または前記配線基板が有する、接続端子形成領域または電極端子形成面に、はんだ粉、対流添加剤、および前記はんだ粉の溶融温度で流動性を有する樹脂を含む樹脂組成物を、前記接続端子形成領域または前記電極端子形成面に形成された複数の接続端子または複数の電極端子をまたがるように塗布する塗布機構と、
固定されていない前記電子部品または前記配線基板を把持した状態で、前記電子部品の前記電極端子と前記配線基板の前記接続端子とを、前記樹脂組成物を介在させた状態で当接させる搭載ツールと、
部品搭載ツールにより前記電子部品を把持したうえで、前記電極端子と前記接続端子とを当接させた状態で、前記配線基板と前記電子部品とのうちの少なくとも一方を加熱する加熱機構と、
を備え、
前記塗布機構は、前記はんだ粉の溶融する温度でガスを発生させる特性を有する前記対流添加剤を含んだ前記樹脂組成物を、前記接続端子形成領域または前記電極端子形成面に塗布し、
前記加熱機構は、前記配線基板と前記電子部品とのうちの少なくとも一方を、前記対流添加剤が沸騰あるいは分解する温度に過熱し、
前記加熱機構によって前記配線基板と前記電子部品とのうちの少なくとも一方が前記温度で過熱されて前記樹脂組成物中にガスが発生して当該ガスが前記樹脂組成物中で対流することで、前記はんだ粉が前記電極端子と前記接続端子との周辺に集合して前記電極端子と前記接続端子とが電気的に接続される。
前記固定台は、前記配線基板を固定し、
前記塗布機構は、前記配線基板の前記接続端子形成領域に前記樹脂組成物を塗布し、
前記搭載ツールは、前記電子部品を把持した状態で当該電子部品を前記配線基板の前記接続端子まで移動させて、当該電子部品の前記電極端子と前記配線基板の前記接続端子とを当接させることができる。
前記搭載ツールは、前記電子部品を把持し、
前記搭載ツールは、前記電子部品を把持した状態で、当該電子部品を、前記配線基板の表面を基準にしてXYθ方向に微動させるXYθ駆動機構をさらに有することができる。
12,42,52 ツール固定部
14,48,56 XYθ駆動機構
16 熱遮断機構
18 固定機構
20,44,54,74 保持部
22,46,70 基板固定台
24 架台
26 支柱
28 水平移動部
30,60 電子部品(半導体素子)
30A,60A 電極端子
32,62 配線基板
32A,62A 接続端子
34 はんだバンプ
50 基板搭載ツール
58 部品固定台
64 樹脂組成物
66 樹脂
68 はんだ粉
76 はんだ
図1−図4は、本発明の第1の参考例にかかる電子部品の実装方法および実装装置を説明するための図である。図1は、本参考例にかかる電子部品実装装置の概略断面図である。図2A、図2B、図3A、および図3Bは、本参考例にかかる電子部品の実装方法を説明するための主要工程の断面図である。図4は、本実施形態のフローチャートである。
図5A−図6Bは、本発明の第2の参考例にかかる電子部品実装装置とそれを用いた電子部品の実装方法を説明するための主要工程の断面図である。本参考例にかかる電子部品実装装置は、図1に示す電子部品実装装置と全体的な形状は同じである。なお、本参考例でも、電子部品として半導体素子を用いた例について説明する。
図7A−図8Bは、本発明の第3の参考例にかかる電子部品実装装置とそれを用いた電子部品の実装方法を説明するための主要工程の断面図である。本参考例にかかる電子部品実装装置は、図1に示す電子部品実装装置と以下の点で異なる。
図10A−図11Bは、本発明の第4の実施の形態にかかる電子部品実装方法および電子部品実装装置を説明するための断面図である。本実施の形態の電子部品実装装置は、第1の参考例で説明した電子部品実装装置とは、以下の点で異なる。
Claims (10)
- チップ部品やCSPパッケージやベアチップから選ばれる少なくとも一つの電極端子を有する電子部品を、接続端子を有する配線基板に、はんだを介して実装する実装方法であって、
前記配線基板と前記電子部品とのうちの一方を固定する第1の工程と、
固定された前記配線基板または前記電子部品が有する、接続端子形成領域または電極端子形成面に、はんだ粉、対流添加剤、および前記はんだ粉の溶融温度で流動性を有する樹脂を含む樹脂組成物を、前記接続端子形成領域または前記電極端子形成面に形成された複数の接続端子または複数の電極端子をまたがるように塗布する第2の工程と、
固定されていない前記配線基板または前記電子部品を把持した状態で、前記電子部品の前記電極端子と前記配線基板の前記接続端子とを、前記樹脂組成物を介在させて当接させる第3の工程と、
部品搭載ツールにより前記電子部品を把持したうえで、前記電極端子と前記接続端子とを当接させた状態を保持しながら、前記配線基板および前記電子部品の少なくとも一方を加熱して、前記電極端子と前記接続端子とを前記はんだ粉により接合する第4の工程と、
を含み、
前記第4の工程では、前記はんだ粉を溶融させるとともに前記対流添加剤により前記はんだ粉を前記電極端子と前記接続端子との間に自己集合させた状態で、溶融させた前記はんだ粉を成長させて前記電極端子と前記接続端子とをはんだ接続する電子部品の実装方法であって、
前記第2の工程では、前記はんだ粉の溶融する温度でガスを発生させる特性を有する前記対流添加物を、前記樹脂組成物に含ませ、
前記第4の工程では、前記対流添加物を沸騰あるいは分解させて前記樹脂組成物中にガスを発生させて当該ガスを前記樹脂組成物中で対流させることで、前記はんだ粉を前記電極端子と前記接続端子との周辺に集合させて前記電極端子と接続端子とを電気的に接続することを特徴とする電子部品の実装方法。 - 前記第4の工程では、
前記電極端子と前記接続端子とを、溶融させた前記はんだ粉により接続させた後、前記基板固定台により前記配線基板を固定した状態で、当該基板固定台を、前記配線基板の表面を基準にしてXYθ方向に微動可能にする、
請求項1の電子部品の実装方法。 - 前記第4の工程では、溶融した前記はんだ粉のセルフアライメントに起因して生じる駆動力によって、前記基板固定台を微動可能にする、
請求項2の電子部品の実装方法。 - 前記第4の工程の後、
さらなる加熱を行い前記樹脂組成物中の樹脂を硬化させる第5の工程と、
前記樹脂が硬化した後、前記部品搭載ツールによる前記電子部品の把持を解除する第6の工程と、
をさらに含む、
請求項1の電子部品の実装方法。 - チップ部品やCSPパッケージやベアチップから選ばれる少なくとも一つの電極端子を有する電子部品を、接続端子を有する配線基板に、はんだを介して実装する電子部品実装装置であって、
前記電子部品と前記配線基板とのうちの一方を固定する固定台と、
前記固定台により固定された前記電子部品または前記配線基板が有する、接続端子形成領域または電極端子形成面に、はんだ粉、対流添加剤、および前記はんだ粉の溶融温度で流動性を有する樹脂を含む樹脂組成物を、前記接続端子形成領域または前記電極端子形成面に形成された複数の接続端子または複数の電極端子をまたがるように塗布する塗布機構と、
固定されていない前記電子部品または前記配線基板を把持した状態で、前記電子部品の前記電極端子と前記配線基板の前記接続端子とを、前記樹脂組成物を介在させた状態で当接させる搭載ツールと、
部品搭載ツールにより前記電子部品を把持したうえで、前記電極端子と前記接続端子とを当接させた状態で、前記配線基板と前記電子部品とのうちの少なくとも一方を加熱する加熱機構と、
を備え、
前記塗布機構は、前記はんだ粉の溶融する温度でガスを発生させる特性を有する前記対流添加剤を含んだ前記樹脂組成物を、前記接続端子形成領域または前記電極端子形成面に塗布し、
前記加熱機構は、前記配線基板と前記電子部品とのうちの少なくとも一方を、前記対流添加剤が沸騰あるいは分解する温度に過熱し、
前記加熱機構によって前記配線基板と前記電子部品とのうちの少なくとも一方が前記温度で過熱されて前記樹脂組成物中にガスが発生して当該ガスが前記樹脂組成物中で対流することで、前記はんだ粉が前記電極端子と前記接続端子との周辺に集合して前記電極端子と前記接続端子とが電気的に接続される、
電子部品実装装置。 - 前記固定台は、前記配線基板を固定し、
前記塗布機構は、前記配線基板の前記接続端子形成領域に前記樹脂組成物を塗布し、
前記搭載ツールは、前記電子部品を把持した状態で当該電子部品を前記配線基板の前記接続端子まで移動させて、当該電子部品の前記電極端子と前記配線基板の前記接続端子とを当接させる、
請求項5の電子部品実装装置。 - 前記搭載ツールは、前記電子部品を把持し、
前記搭載ツールは、前記電子部品を把持した状態で、当該電子部品を、前記配線基板の表面を基準にしてXYθ方向に微動させるXYθ駆動機構をさらに有する、
請求項5の電子部品実装装置。 - 前記XYθ駆動機構は、前記電極端子と前記接続端子とが前記はんだにより接続された後、前記はんだが溶融した状態で作動する、
請求項7の電子部品実装装置。 - 前記加熱機構は、前記はんだを加熱した後、前記はんだの加熱温度より高温まで加熱する機能をさらに有する、
請求項5の電子部品実装装置。 - 前記XYθ駆動機構は、前記加熱機構から前記電子部品または前記配線基板に伝達される熱を抑制する熱遮断機構をさらに有する、
請求項5の電子部品実装装置。
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