JP4848752B2 - 部品実装用ピンを有するプリント配線板及びこれを使用した電子機器 - Google Patents
部品実装用ピンを有するプリント配線板及びこれを使用した電子機器 Download PDFInfo
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- JP4848752B2 JP4848752B2 JP2005356049A JP2005356049A JP4848752B2 JP 4848752 B2 JP4848752 B2 JP 4848752B2 JP 2005356049 A JP2005356049 A JP 2005356049A JP 2005356049 A JP2005356049 A JP 2005356049A JP 4848752 B2 JP4848752 B2 JP 4848752B2
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Description
[部品実装用ピンを有するプリント配線板及びこれを使用した電子機器の構成]
(部品実装用ピンを有するプリント配線板)
図1は、部品実装用ピンを有するプリント配線板の構成の一部を示す図である。本発明に係るプリント配線板1は、例えば、IC,LSI等の半導体装置のような電子部品(図示せず。)と接続するための部品実装用ピン18を備えている。
[部品実装用ピンを有するプリント配線板を使用した電子機器の実装方法]
図2は、部品実装用ピン18を有するプリント配線板1を使用した電子機器4の一部を示す図であり、実装構造を明らかにしている。プリント配線板1の部品実装用ピン18は、例えば、IC,LSI等の半導体装置のような電子部品2に形成された電極パッド3に対して機械的に接触し、電気的接続を確保している。
[部品実装用ピンを有するプリント配線板の製造方法]
図4A〜図4Mを参照しながら、部品実装用ピンを有するプリント配線板の製造方法の典型例を、めっきを利用した方法(めっき法)によって説明する。
[本実施形態の効果]
上記実施形態によれば、以下の効果がある。
半導体チップとプリント配線板とは、可撓性,弾性,屈曲性等を有する部品実装用ピンで接続(部品実装用ピンの反発力を利用した機械的接合)されているため、曝される温度によって発生する膨張差による剪断応力(機械的エネルギ)を吸収することができる。半導体チップとプリント配線板の膨張差を吸収できるので、半田接続部に過重な応力が集中せず、接続部分の損壊を減少することができる。
半導体チップとプリント配線板とを、プリント配線板のパターンを利用した部品実装用ピンで接続しているので、必然的に接続長さが短くなり良好な電気的特性が得られる。例えば、1枚のプリント板に、複数個の半導体ベアチップを搭載した電子機器(Multichip module)において、特性インピーダンスZ0が一定になるように設計されたプリント配線板のマイクロストリップラインに対して、長さの極端に短い部品実装用ピンを形成して半導体チップと接続することにより、特性インピーダンスZ0の不整合に起因する電気的不良を低減することができる。
半導体チップとプリント配線板とを、寸法の短い部品実装用ピンで接続しているので、電子機器の高速化を図ることができる。
半導体チップとプリント配線板とを、電気抵抗の低い部品実装用ピンで接続しているので、電子機器の各回路要素に対する電源供給の際の無用な電圧降下を防止できる。電気抵抗の低い部品実装用ピンとしては、例えば、Cu,Au,Ag又はこれらの任意の合金製の部品実装用ピン、これらの金属で表面処理した部品実装用ピンを使用できる。
半導体チップとプリント配線板とを、空気中に立ち上がった部品実装用ピンで接続しているので、信号の高速伝送が可能となる。即ち、ガラスエポキシ基板など比誘電率εrが1より大きい基板の中を流れる電気信号の速さはv=c/(εr)1/2(m/s)になるのに対して、空気中に立ち上がった部品実装用ピンでは真空中に近い速度と考えられ、v=c(m/s)と一層速くなる。
図2を用いて説明した部品実装用ピン圧接実装構造を有する電子機器4では、半導体チップとプリント配線板とは部品実装用ピンの反発力を利用した状態で機械的に接合しているため、接触抵抗が比較的低い状態の電気的接続が得られる。
図2を用いて説明した部品実装用ピン圧接実装構造を有する電子機器では、半導体チップに対してプリント配線板を押し付けることにより両者間の電気的接続が確保できる。従って、コア基板が存在しないコアレス基板やコア基板の厚さが薄い基板のような反りの発生が比較的大きいプリント配線板であっても、この部品実装用ピン圧接実装構造を有する電子機器を実現できる。
図2を用いて説明した部品実装用ピン圧接実装構造を有する電子機器では、半導体チップとプリント配線板とは半田接続されていないため、変更作業,補修作業(Repair)等の際に、容易に半導体チップとプリント配線板とを分離できる。
図2を用いて説明した部品実装用ピン圧接実装構造を有する電子機器では、リフロー工程等の熱履歴が残らない。熱によるダメージがないため、プリント配線板のパターンを高密度化(ファイン化)ができる。
[その他]
以上により、部品実装用ピンを有するプリント配線板及びこれを使用した電子機器の実施形態について説明したが、これらは例示であって、本発明はこれに限定されない。当業者が容易になしえる付加・削除・変換・改良等は、本発明の範囲に含まれる。
Claims (11)
- 部品実装用ピンを備えたプリント配線板であって、
前記プリント配線板は、部品実装面に最外層導体を有し、
前記部品実装用ピンは、弾性を有する別個のめっき層から形成された二層構造であり、前記部品実装面に対向する第1めっき層は伸張する内部応力を、第1めっき層の上面に形成された第2めっき層は収縮する内部応力を夫々有し、
前記部品実装用ピンの一端は前記最外層導体から延在し、他端に至る全長にわたり、第1めっき層と第2めっき層との内部応力の差によって、前記プリント配線板より湾曲して上方に立ち上がっている、プリント配線板。 - 請求項1に記載のプリント配線板において、
前記部品実装用ピンは、導電性の保護被膜が形成されている、プリント配線板。 - 請求項1に記載のプリント配線板において、更に、
前記部品実装面の上面に形成された絶縁層を有し、該絶縁層は、前記部品実装用ピンの一端が接続された前記最外層導体の部分を除き、該部品実装面を覆っている、プリント配線板。 - 請求項3に記載のプリント配線板において、更に、
前記絶縁層は、ソルダーレジスト層又は熱硬化された絶縁フィルムである、プリント配線板。 - 請求項1に記載のプリント配線板において、
前記部品実装用ピンは、前記他端に半田バンプを有している、プリント配線板。 - 部品実装用ピンを有するプリント配線板と、
電極パッドを有する面実装型部品とを備え、
前記プリント配線板は、部品実装面に最外層導体を有し、
前記部品実装用ピンは、弾性を有する別個のめっき層から形成された二層構造であり、前記部品実装面に対向する第1めっき層は伸張する内部応力を、第1めっき層の上面に形成された第2めっき層は収縮する内部応力を夫々有し、
前記部品実装用ピンの一端は前記最外層導体から延在し、他端に至る全長にわたり、第1めっき層と第2めっき層との内部応力の差によって、前記プリント配線板より湾曲して上方に立ち上がって、前記面実装型部品の電極パッドに圧接している、電子機器。 - 請求項6に記載の電子機器において、
前記部品実装用ピンは、導電性の保護被膜が形成されている、電子機器。 - 請求項6に記載の電子機器において、更に、
前記部品実装面の上面に形成された絶縁層を有し、該絶縁層は、前記部品実装用ピンの一端が延在する前記最外層導体の部分を除き、該部品実装面を覆っている、電子機器。 - 請求項8に記載の電子機器において、更に、
前記絶縁層は、ソルダーレジスト層又は熱硬化された絶縁フィルムである、電子機器。 - 請求項6に記載の電子機器において、
前記部品実装用ピンの他端は、前記面実装型部品の電極パッドに圧接し、該部品実装用ピンは周囲を空気で囲まれている、電子機器。 - 請求項6に記載の電子機器において、
前記部品実装用ピンの他端は、前記面実装型部品の電極パッドに対して半田接続している、電子機器。
Priority Applications (7)
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JP2005356049A JP4848752B2 (ja) | 2005-12-09 | 2005-12-09 | 部品実装用ピンを有するプリント配線板及びこれを使用した電子機器 |
PCT/JP2006/323913 WO2007066563A1 (ja) | 2005-12-09 | 2006-11-30 | 部品実装用ピンを有するプリント配線板及びこれを使用した電子機器 |
CNA2006800091042A CN101189922A (zh) | 2005-12-09 | 2006-11-30 | 具有安装部件用引脚的印刷线路板及使用其的电子设备 |
KR1020077019656A KR20070100386A (ko) | 2005-12-09 | 2006-11-30 | 부품 실장용 핀을 갖는 프린트 배선판 및 이것을 사용한전자 기기 |
EP06833716A EP1895821A4 (en) | 2005-12-09 | 2006-11-30 | PRINTED WIRING BOARD WITH COMPONENT MOUNTING PINS AND ELECTRONIC EQUIPMENT HAVING THIS CARD |
US11/566,912 US7773388B2 (en) | 2005-12-09 | 2006-12-05 | Printed wiring board with component mounting pin and electronic device using the same |
TW095146065A TWI341153B (en) | 2005-12-09 | 2006-12-08 | Printed wiring board with a pin for mounting a component and an electronic device using the same |
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JP2005356049A JP4848752B2 (ja) | 2005-12-09 | 2005-12-09 | 部品実装用ピンを有するプリント配線板及びこれを使用した電子機器 |
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US (1) | US7773388B2 (ja) |
EP (1) | EP1895821A4 (ja) |
JP (1) | JP4848752B2 (ja) |
KR (1) | KR20070100386A (ja) |
CN (1) | CN101189922A (ja) |
TW (1) | TWI341153B (ja) |
WO (1) | WO2007066563A1 (ja) |
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- 2005-12-09 JP JP2005356049A patent/JP4848752B2/ja not_active Expired - Fee Related
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- 2006-11-30 EP EP06833716A patent/EP1895821A4/en not_active Ceased
- 2006-11-30 WO PCT/JP2006/323913 patent/WO2007066563A1/ja active Application Filing
- 2006-11-30 CN CNA2006800091042A patent/CN101189922A/zh active Pending
- 2006-12-05 US US11/566,912 patent/US7773388B2/en not_active Expired - Fee Related
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US20070187140A1 (en) | 2007-08-16 |
WO2007066563A1 (ja) | 2007-06-14 |
TW200806133A (en) | 2008-01-16 |
US7773388B2 (en) | 2010-08-10 |
CN101189922A (zh) | 2008-05-28 |
JP2007165373A (ja) | 2007-06-28 |
TWI341153B (en) | 2011-04-21 |
KR20070100386A (ko) | 2007-10-10 |
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EP1895821A4 (en) | 2010-11-17 |
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