JP2009032657A - 異方性導電材料、接続構造体及びその製造方法 - Google Patents
異方性導電材料、接続構造体及びその製造方法 Download PDFInfo
- Publication number
- JP2009032657A JP2009032657A JP2008037781A JP2008037781A JP2009032657A JP 2009032657 A JP2009032657 A JP 2009032657A JP 2008037781 A JP2008037781 A JP 2008037781A JP 2008037781 A JP2008037781 A JP 2008037781A JP 2009032657 A JP2009032657 A JP 2009032657A
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- Prior art keywords
- anisotropic conductive
- conductive material
- melt viscosity
- connection
- electronic component
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Abstract
【解決手段】導電性粒子が絶縁性バインダに分散されてなる異方性導電材料は、最低溶融粘度[η0]が1.0×102〜1.0×106mPa・secであり、且つ以下の式(1)を満足する。
1<[η1]/[η0]≦3 (1)
式(1)において、[η0]は異方性導電材料の最低溶融粘度であり、[η1]は最低溶融粘度を示す温度T0より30℃低い温度T1における溶融粘度である。
【選択図】図1
Description
ファイルの下側(低温側)に位置するようになる。このことは、外側バンプ1aの押し込みが内側バンプ1bの押し込みに比べて十分ではなく、外側バンプ1aにおける導通抵抗が内側バンプ1bにおける導通抵抗よりも大きくなる結果となる。
温度計、窒素導入管、攪拌機及びコンデンサーを備えたガラス製反応器に、水300質量部、部分鹸化ポリビニルアルコール(ゴーセーノールKH−17、日本合成化学工業社製)の1%水溶液15質量部及びハイドロキシアパタイトの10%水分散液(スーパータイト10、日本化学工業社製)15質量部を仕込んだ。ポリメリックペルオキシド類0.5質量部を前記水溶液に室温下1時間分散させた後に酢酸ビニル30質量部を仕込み、反応器内に窒素を導入しながら、攪拌下60℃で2時間重合(第一段重合)を行った。その後、室温まで冷却し、反応器にスチレン70質量部を仕込み、室温で攪拌1時間行った。更に、反応器に窒素を導入しながら、80℃で8時間攪拌し、90℃で30分間重合を行った。(第2段重合)。その後、反応混合物を室温まで冷却して沈殿物として重合物を得た。得られた重合物を5%塩酸130質量部で洗浄し、続いて水で洗浄して濾別した。得られた重合物を乾燥することにより白色粒子状のスチレン系ブロック共重合体を85%の収率で得た。このブロック共重合体中の、スチレンと酢酸ビニルの共重合組成比は70:30であった。
表1の成分(質量部)を、遊星撹拌機を用いて均一に混合することでフィルム状の異方性導電材料を調製した。得られた異方性導電材料について、以下に説明するように溶融粘度と導通抵抗とを測定した。
異方性導電材料の溶融粘度を、回転式レオメータ(TA Instrument社)を用い、昇温速度 10℃/分;測定圧力 5g一定; 使用測定プレート直径 8mmという条件で測定した。得られた最低溶融粘度[η0](Pa・sec)とそのときの温度T0(℃)、T0から30℃低い温度T1における溶融粘度[η1](Pa・sec)の結果を表1に示す。
異方性導電材料を、バーコータを用いて剥離フィルム状に塗布し、80℃で5分間プレベークすることにより異方性導電フィルムを作製した。得られた異方性導電フィルムを、千鳥配置された金バンプを有する試験用ICチップ(バンプサイズ 1800μm2、バンプ高さ 15μm、外側バンプ列と内側バンプ列間の距離 20μm、各列内のバンプ間の距離 20μm)と、対応するガラス基板との間に挟持させ、加熱加圧ヘッドにて200℃で圧力 60MPaで5秒間の加熱加圧を行った。その際の外側バンプと内側バンプの導通抵抗(Ω)を常法に従って測定した。得られた結果を表1に示す。
表2の成分(質量部)を、遊星撹拌機を用いて均一に混合することでフィルム状の異方性導電材料を調製した。得られた異方性導電材料について、実施例1と同様に溶融粘度と導通抵抗とを測定した。
1b 内側バンプ
10 ICチップ
20、34 配線端子
21 配線基板
22、36 異方性導電材料
23、37 加熱加圧ヘッド
30 ポリイミドシート
31 電極
32 カバーレイフィルム
33 フレキシブル配線
35 ディスプレイパネル用ガラス基板
Claims (7)
- 温度T0が90〜120℃である請求項1記載の異方性導電材料。
- 有機絶縁フィラーを含有する請求項1又は2記載の異方性導電材料。
- 片面に接続端子が設けられている電子部品の当該接続端子と、該接続端子に対応した接続領域を有する配線基板の当該接続領域とが、異方性導電材料を介して接続されてなる接続構造体であって、該異方性導電材料が請求項1〜3のいずれかに記載の異方性導電材料であることを特徴とする接続構造体。
- 電子部品が、裏面の周縁部の少なくとも一部に千鳥配置された複数のバンプ又は接続パッドを有するICチップである請求項4記載の接続構造体。
- 電子部品が、片面に平行配置された複数のライン状配線を有するフレキシブル配線シートである請求項4又は5記載の接続構造体。
- 請求項4〜6のいずれかに記載の接続構造体の製造方法であって、電子部品の接続端子と配線基板の接続領域との間に異方性導電材料を挟持させ、加熱加圧ヘッドにより電子部品を加熱加圧することを特徴とする製造方法。
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JP2008037781A JP5093482B2 (ja) | 2007-06-26 | 2008-02-19 | 異方性導電材料、接続構造体及びその製造方法 |
US12/451,501 US8148641B2 (en) | 2007-06-26 | 2008-04-15 | Anisotropic conductive material, connected structure, and production method thereof |
PCT/JP2008/057317 WO2009001605A1 (ja) | 2007-06-26 | 2008-04-15 | 異方性導電材料、接続構造体及びその製造方法 |
CN2008800217976A CN101689409B (zh) | 2007-06-26 | 2008-04-15 | 各向异性导电材料、连接结构体及其制造方法 |
KR1020097026599A KR101196684B1 (ko) | 2007-06-26 | 2008-04-15 | 이방성 도전 재료, 접속 구조체 및 그 제조 방법 |
TW97114098A TWI385676B (zh) | 2007-06-26 | 2008-04-18 | An anisotropic conductive material, a connecting structure, and a method for manufacturing the same |
HK10106279A HK1140307A1 (en) | 2007-06-26 | 2010-06-25 | Anisotropic electroconductive material, connection structure, and process for producing the connection structure |
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JP2010268002A (ja) * | 2010-08-17 | 2010-11-25 | Sony Chemical & Information Device Corp | 接続構造体の製造方法 |
JP2011103307A (ja) * | 2011-01-19 | 2011-05-26 | Sony Chemical & Information Device Corp | 異方性導電フィルム |
JP2012028600A (ja) * | 2010-07-26 | 2012-02-09 | Panasonic Corp | 電子部品接着用の接着剤および電子部品接着方法。 |
JP2015144120A (ja) * | 2013-12-24 | 2015-08-06 | 積水化学工業株式会社 | 導電材料及び接続構造体 |
JP2016124933A (ja) * | 2014-12-26 | 2016-07-11 | 株式会社タムラ製作所 | 異方性導電性ペーストおよびそれを用いたプリント配線基板 |
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KR20170058884A (ko) | 2014-09-18 | 2017-05-29 | 세키스이가가쿠 고교가부시키가이샤 | 도전 페이스트, 접속 구조체 및 접속 구조체의 제조 방법 |
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- 2008-04-15 KR KR1020097026599A patent/KR101196684B1/ko active IP Right Grant
- 2008-04-15 CN CN2008800217976A patent/CN101689409B/zh active Active
- 2008-04-18 TW TW97114098A patent/TWI385676B/zh active
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JP2012028600A (ja) * | 2010-07-26 | 2012-02-09 | Panasonic Corp | 電子部品接着用の接着剤および電子部品接着方法。 |
JP2010268002A (ja) * | 2010-08-17 | 2010-11-25 | Sony Chemical & Information Device Corp | 接続構造体の製造方法 |
JP2011103307A (ja) * | 2011-01-19 | 2011-05-26 | Sony Chemical & Information Device Corp | 異方性導電フィルム |
WO2012098929A1 (ja) * | 2011-01-19 | 2012-07-26 | ソニーケミカル&インフォメーションデバイス株式会社 | 異方性導電フィルム |
JP2015144120A (ja) * | 2013-12-24 | 2015-08-06 | 積水化学工業株式会社 | 導電材料及び接続構造体 |
KR20170058884A (ko) | 2014-09-18 | 2017-05-29 | 세키스이가가쿠 고교가부시키가이샤 | 도전 페이스트, 접속 구조체 및 접속 구조체의 제조 방법 |
JP2016124933A (ja) * | 2014-12-26 | 2016-07-11 | 株式会社タムラ製作所 | 異方性導電性ペーストおよびそれを用いたプリント配線基板 |
JP2016127081A (ja) * | 2014-12-26 | 2016-07-11 | 株式会社タムラ製作所 | 異方性導電性ペーストおよびそれを用いたプリント配線基板 |
WO2017033931A1 (ja) * | 2015-08-24 | 2017-03-02 | 積水化学工業株式会社 | 導電材料及び接続構造体 |
Also Published As
Publication number | Publication date |
---|---|
TW200903525A (en) | 2009-01-16 |
CN101689409A (zh) | 2010-03-31 |
KR101196684B1 (ko) | 2012-11-06 |
US8148641B2 (en) | 2012-04-03 |
TWI385676B (zh) | 2013-02-11 |
US20100103630A1 (en) | 2010-04-29 |
CN101689409B (zh) | 2012-04-04 |
HK1140307A1 (en) | 2010-10-08 |
JP5093482B2 (ja) | 2012-12-12 |
KR20100023882A (ko) | 2010-03-04 |
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