JP6338810B2 - 異方導電性フィルム、これに含まれる異方導電性フィルム組成物およびこれを含む装置 - Google Patents
異方導電性フィルム、これに含まれる異方導電性フィルム組成物およびこれを含む装置 Download PDFInfo
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- JP6338810B2 JP6338810B2 JP2011224131A JP2011224131A JP6338810B2 JP 6338810 B2 JP6338810 B2 JP 6338810B2 JP 2011224131 A JP2011224131 A JP 2011224131A JP 2011224131 A JP2011224131 A JP 2011224131A JP 6338810 B2 JP6338810 B2 JP 6338810B2
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- 229920003002 synthetic resin Polymers 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- UWHCKJMYHZGTIT-UHFFFAOYSA-N tetraethylene glycol Chemical compound OCCOCCOCCOCCO UWHCKJMYHZGTIT-UHFFFAOYSA-N 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- NGSWKAQJJWESNS-ZZXKWVIFSA-N trans-4-coumaric acid Chemical compound OC(=O)\C=C\C1=CC=C(O)C=C1 NGSWKAQJJWESNS-ZZXKWVIFSA-N 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 1
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Description
本発明の異方導電性フィルムは、フィルムのマトリックスの役割をするバインダーにNBR系樹脂およびウレタン系樹脂からなる群から選択される1種以上を含みうる。
本発明の異方導電性フィルムは、硬化剤として、ウレタン(メタ)アクリレート、および(メタ)アクリレート単量体からなる群から選択される1種以上を含みうる。
本発明の異方導電性フィルムは開始剤を含み、開始剤としてはラジカル開始剤を使用できる。ラジカル開始剤として、光重合型開始剤または熱硬化型開始剤の1種以上を組合わせて使用できる。好ましくは熱硬化型開始剤を使用できる。
本発明の異方導電性フィルムは、導電性能を付与するためのフィラーとして導電性粒子を含む。
NBR系樹脂(N−34、日本ゼオン)100gを、メタノールに希釈してイオン不純物を除去した。自動燃焼装置を利用したイオンクロマトグラフィーで測定したNBR系樹脂のイオン含有量は、600質量ppmから10質量ppmに減少した。
ウレタン系樹脂(NPC7007T、Nanux)100gをメチルエチルケトンに希釈してイオン不純物を除去した。自動燃焼装置を利用したイオンクロマトグラフィーで測定したウレタン系樹脂のイオン含有量は、400質量ppmから10質量ppmに減少した。
ポリウレタンビーズ(MM−101−MS)100gをメチルエチルケトンに希釈してイオン不純物を除去した。自動燃焼装置を利用したイオンクロマトグラフィーで測定したポリウレタンビーズのイオン含有量は、500質量ppmから10質量ppmに減少した。
フィルム形成のためのマトリックスの役割をするバインダーとして、アクリル系樹脂(アルキル(メタ)アクリレート樹脂(質量平均分子量Mw90,000g/mol、酸価2mgKOH/mg、MMA、BA、シクロヘキシルメタクリレート共重合体))24質量%、前記製造例1で製造したイオン含有量が10質量ppmのNBR系樹脂(N−34、日本ゼオン)40質量%を使用した。硬化剤として、ウレタンアクリレート(NPC7007、Nanux)25質量%、反応性単量体として、ラジカル重合型(メタ)アクリレート単量体である2−メタアクリロイルオキシエチルホスフェート1質量%、ペンタエリスリトールトリ(メタ)アクリレート2質量%、2−ヒドロキシエチル(メタ)アクリレート2.5質量%を使用した。熱硬化型開始剤としてラウリルパーオキシド2.5質量%、導電性フィラーとして絶縁処理した導電性粒子(粒径:3μm、積水化学工業(株)製)を3質量%用いてフィルム組成物を製造した。
前記実施例1においてバインダーの構成を下記表1のように変更したことを除いては、前記実施例1と同様の方法でフィルム組成物を製造した。ウレタン系樹脂としては、前記製造例2で製造したウレタン系樹脂を使用した。
前記実施例1においてバインダーの構成を下記表1のように変更し、前記製造例3で製造したポリウレタンビーズを使用したことを除いては、前記実施例1と同様の方法でフィルム組成物を製造した。
バインダーの構成でNBR系樹脂またはウレタン系樹脂をイオン交換処理しなかったこと(NBR系樹脂はイオン含有量が600質量ppm、ウレタン系樹脂はイオン含有量が400質量ppm)を除いては、前記実施例1または2と同様の方法でフィルム組成物を製造した。
前記実施例1〜6と比較例1および2で製造された異方導電性フィルム組成物100gをトルエン20gに溶解させて液状とした後、1時間25℃で攪拌し、これを離型フィルム上に16μmの厚さで塗布した後、70℃で15分間乾燥させてトルエンを揮発させることにより、異方導電性フィルムを得た。製造された異方導電性フィルムに対して、イオン含有量、電気伝導度、初期外観、85℃および85%のRHの条件下で250時間または500時間放置した後、腐食の有無により接続信頼性を評価した。その結果を表2に示す。
1.イオン含有量:自動燃焼装置を利用したイオンクロマトグラフィーで測定した。
Claims (14)
- バインダー、硬化剤、開始剤および導電性粒子を含み、前記バインダーがニトリルブタジエンゴム系樹脂およびウレタン系樹脂からなる群から選択される1種以上を含み、イオン含有量が0超100質量ppm以下であり、電気伝導度が0超100μS/cm以下であり、
前記開始剤が、ラジカル開始剤である、異方導電性フィルムであって、
前記電気伝導度が、前記異方導電性フィルム0.4gを20gの脱イオン水(D.I.W)に入れた後、100℃で10時間沸騰し、水に溶け出たイオンを伝導度メーター(Conductivity Meter)を使用して測定した値であり、
前記ニトリルブタジエンゴム系樹脂のイオン含有量が0超100質量ppm以下であり、
前記ウレタン系樹脂のイオン含有量が0超100質量ppm以下であり、
前記バインダーが、アクリル系樹脂をさらに含み、
前記アクリル系樹脂は、質量平均分子量が50,000〜2,000,000g/molである、異方導電性フィルム。 - 前記イオン含有量が0超50質量ppm以下であることを特徴とする請求項1に記載の異方導電性フィルム。
- 前記バインダーが、前記アクリル系樹脂を20〜80質量%で含み、イオン含有量が0超100質量ppm以下の前記ニトリルブタジエンゴム系樹脂を20〜80質量%で含むことを特徴とする請求項1に記載の異方導電性フィルム。
- 前記バインダーが、前記アクリル系樹脂を20〜80質量%で含み、イオン含有量が0超100質量ppm以下の前記ウレタン系樹脂を20〜80質量%で含むことを特徴とする請求項1に記載の異方導電性フィルム。
- 前記バインダーが、前記アクリル系樹脂を20〜90質量%で含み、イオン含有量が0超100質量ppm以下の前記ニトリルブタジエンゴム系樹脂を5〜55質量%で含み、イオン含有量が0超100質量ppm以下の前記ウレタン系樹脂を5〜40質量%で含むことを特徴とする請求項1に記載の異方導電性フィルム。
- 前記バインダーが、アクリロニトリル系樹脂、ポリアミド系樹脂、オレフィン系樹脂およびシリコン系樹脂からなる群から選択される1種以上の熱可塑性樹脂をさらに含むことを特徴とする請求項1〜5のいずれか1項に記載の異方導電性フィルム。
- 前記硬化剤が、ウレタン(メタ)アクリレートおよび(メタ)アクリレート単量体からなる群から選択される1種以上を含むことを特徴とする請求項1〜6のいずれか1項に記載の異方導電性フィルム。
- 固形分基準で前記バインダー20〜78質量%、前記硬化剤20〜50質量%、前記ラジカル開始剤1〜10質量%および前記導電性粒子1〜20質量%を含むことを特徴とする請求項1〜7のいずれか1項に記載の異方導電性フィルム。
- ポリウレタンビーズをさらに含むことを特徴とする請求項1〜8のいずれか1項に記載の異方導電性フィルム。
- 前記ポリウレタンビーズは、イオン交換処理されたものであることを特徴とする請求項9に記載の異方導電性フィルム。
- 前記ポリウレタンビーズのイオン含有量が、0超10質量ppm以下であることを特徴とする請求項9または10に記載の異方導電性フィルム。
- 前記ポリウレタンビーズが、固形分基準で前記異方導電性フィルム100質量部に対して1〜10質量部で含まれることを特徴とする請求項9〜11のいずれか1項に記載の異方導電性フィルム。
- バインダー、硬化剤、開始剤および導電性粒子を含み、前記バインダーがニトリルブタジエンゴム系樹脂およびウレタン系樹脂からなる群から選択される1種以上を含む、異方導電性フィルム用の硬化前である異方導電性フィルム組成物であって、
前記異方導電性フィルム組成物から製造された異方導電性フィルムのイオン含有量が0超100質量ppm以下であり、
前記異方導電性フィルム組成物から製造された異方導電性フィルムの電気伝導度が0超100μS/cm以下であり、前記電気伝導度が、前記異方導電性フィルム0.4gを20gの脱イオン水(D.I.W)に入れた後、100℃で10時間沸騰し、水に溶け出たイオンを伝導度メーター(Conductivity Meter)を使用して測定した値であり、
前記ニトリルブタジエンゴム系樹脂のイオン含有量が0超100質量ppm以下であり、
前記ウレタン系樹脂のイオン含有量が0超100質量ppm以下であり、
前記バインダーが、アクリル系樹脂をさらに含み、
前記アクリル系樹脂は、質量平均分子量が50,000〜2,000,000g/molであり、
前記開始剤が、ラジカル開始剤であることを特徴とする異方導電性フィルム組成物。 - 請求項1〜12のいずれか1項に記載の異方導電性フィルムまたは請求項13に記載の異方導電性フィルム組成物から製造された異方導電性フィルムのいずれか1種以上を含む装置。
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2010
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- 2011-09-28 CN CN201110301310.3A patent/CN102559075B/zh active Active
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Publication number | Publication date |
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US8608985B2 (en) | 2013-12-17 |
TW201226497A (en) | 2012-07-01 |
KR101279980B1 (ko) | 2013-07-05 |
TWI458795B (zh) | 2014-11-01 |
CN102559075B (zh) | 2014-09-10 |
JP2012140589A (ja) | 2012-07-26 |
JP2016189334A (ja) | 2016-11-04 |
US20140034882A1 (en) | 2014-02-06 |
US20120168683A1 (en) | 2012-07-05 |
KR20120076185A (ko) | 2012-07-09 |
JP6357501B2 (ja) | 2018-07-11 |
US9384869B2 (en) | 2016-07-05 |
CN102559075A (zh) | 2012-07-11 |
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