JP2008231335A - 電子機器用接着剤シートおよびその製造方法 - Google Patents
電子機器用接着剤シートおよびその製造方法 Download PDFInfo
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- JP2008231335A JP2008231335A JP2007076062A JP2007076062A JP2008231335A JP 2008231335 A JP2008231335 A JP 2008231335A JP 2007076062 A JP2007076062 A JP 2007076062A JP 2007076062 A JP2007076062 A JP 2007076062A JP 2008231335 A JP2008231335 A JP 2008231335A
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- Die Bonding (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
- Adhesive Tapes (AREA)
Abstract
【解決手段】少なくとも接着剤層と剥離可能な保護フィルム層を有する電子機器用接着剤シートであって、前記接着層が、熱伝導性充填剤を固形分中50体積%以上含有する接着剤組成物により、空隙を有する接着剤層(a)を形成し、次いで、前記接着剤層(a)の空隙を、熱伝導性充填剤の含有量が固形分中0〜20体積%である接着剤組成物により充填して得られることを特徴とする電子機器用接着剤シート。
【選択図】なし
Description
1−i:空隙を有する接着剤層(a)の形成
熱伝導性充填剤として窒化アルミニウム粉末(Hグレード、平均粒径D50=1μm(株)トクヤマ製)と球状アルミナ(AO502、平均粒径D50=0.7μm、(株)アドマテックス製)を8:2の重量比で混合し、熱伝導性充填剤100重量部をシランカップリング剤(KBM403、信越化学工業(株)製)0.5重量部で乾式処理を行った。この表面処理を行った熱伝導性充填剤190重量部、樹脂成分として、ビスフェノール型エポキシ(“エピコート”(登録商標)828、エポキシ当量190、ジャパンエポキシレジン(株)製)13重量部、フェノールノボラック樹脂(PSM4326、水酸基当量105、群栄化学工業(株)製)5重量部、熱可塑性樹脂(SGP−3、ナガセケムテックス(株)製、ブチルアクリレートを主成分とするエポキシ基含有アクリルゴム)18重量部、エポキシ樹脂硬化触媒(トリフェニルホスフィン)0.1重量部に希釈溶媒としてメチルイソブチルケトン(MIBK)180重量部を添加し、40℃の条件下でミキサーで均一となるまで攪拌し塗料とした。このときの固形分濃度は56重量%、塗料中の熱伝導性充填剤の含有量は全固形分中66体積%であった。
接着剤組成物として“エピコート”(登録商標)828を13重量部、PSM4326を5重量部、SGP−3を18重量部、トリフェニルホスフィンを0.1重量部配合し、更に希釈溶媒としてMIBKを265重量部添加し、40℃の条件下でミキサーで均一となるまで攪拌し塗料とした。このときの固形分濃度は12重量%であった。
2−i:接着剤層の形成
1−iiで調整した塗料溶液と同一の塗料を調合し、支持体としてシリコーン離型剤付きの厚さ38μmのポリエチレンテレフタレートフィルム(藤森工業(株)製“フィルムバイナ”(登録商標)GT)に、バーコータで約2μmの乾燥厚さとなるように塗布し、120℃で5分間乾燥し、接着剤層を形成した。
実施例1の1−iで調整した塗料溶液と同一の組成の塗料を調合し、支持体として2−iで作製した2μmの接着剤層がついたフィルムの接着剤側にバーコータで約30μmの乾燥厚さとなるように塗布し、120℃で5分間乾燥し、接着剤層(a)を形成した。
1−iiで調整した塗料と同一の組成の塗料を調合し、2−iiで作製したシートの表面にバーコータで塗布し、120℃で5分間乾燥し、接着剤層を形成した。このときの塗布厚みは乾燥時に最表面に2μmの該接着剤組成物の層が形成されるよう調整した。得られた接着剤層の断面を観察すると、空隙は該接着剤組成物で充填され、接着剤層(a)の両面に2μmの該接着剤組成物の層が形成されていた。接着剤シートの評価結果を表1に示す。
空隙を有する接着剤層(a)を実施例1の1−iと同様に作製した。
最表面に形成される接着剤の層をそれぞれ0.5μmとした以外は実施例1同様に接着剤シートを作製した。評価結果を表1に示す。
最表面に形成される接着剤の層をそれぞれ10μmとした以外は実施例1に同様に接着剤シートを作製した。評価結果を表1に示す。
実施例1の1−iで作製した塗料のうち、希釈溶媒の量を50重量部に変更して調合を行った。このとき、塗料溶液の粘度が非常に高いためミキサーでの攪拌はできず、3本ロールで混合を行った。このときの固形分濃度は82重量%であった。この塗料を“フィルムバイナ”(登録商標)GTに乾燥厚みが30μmとなるよう塗布・乾燥し、接着剤シートを得た。接着剤層の断面を観察したが、空隙は観察されなかった。接着剤シートの評価結果を表1に示す。
比較例1で作製した接着剤層の両面に、実施例1の1−iiと同様に厚み2μmの接着剤層を形成した。接着剤シートの評価結果を表1に示す。
熱伝導性充填剤として窒化アルミニウム粉末(Hグレード)とAO502を8:2の重量比で混合し、この熱伝導性充填剤100重量部を0.5重量部のKBM403で乾式処理を行った。この表面処理を行った熱伝導性充填剤を81重量部、樹脂成分として、“エピコート”(登録商標)828を6.8重量部、PSM4326を2.3重量部、SGP−3を9重量部、エポキシ樹脂硬化触媒(トリフェニルホスフィン)0.06重量部に希釈溶媒としてDMF/モノクロルベンゼン/MIBK等量混合溶媒を133重量部添加し、40℃の条件下でミキサーで均一となるまで攪拌し塗料とした。このときの固形分濃度は35重量%、塗料中の熱伝導性充填剤の含有量は全固形分中63体積%であった。
空隙を有する接着剤層(a)を実施例1の1−iと同様に作製した。
Claims (4)
- 少なくとも接着剤層と剥離可能な保護フィルム層を有する電子機器用接着剤シートであって、前記接着層が、熱伝導性充填剤を固形分中50体積%以上含有する接着剤組成物により、空隙を有する接着剤層(a)を形成し、次いで、前記接着剤層(a)の空隙を、熱伝導性充填剤の含有量が固形分中0〜20体積%である接着剤組成物により充填して得られることを特徴とする電子機器用接着剤シート。
- 少なくとも接着剤層と剥離可能な保護フィルム層を有する電子機器用接着剤シートの製造方法であって、(1)熱伝導性充填剤を固形分中50体積%以上含有する接着剤組成物により、空隙を有する接着剤層(a)を形成する工程、(2)前記接着剤層(a)に、熱伝導性充填剤の含有量が固形分中0〜20体積%である接着剤組成物を塗布する工程を有することを特徴とする電子機器用接着剤シートの製造方法。
- 前記(1)の工程が、熱伝導性充填剤を固形分中50体積%以上含有する接着剤組成物を30〜60重量%の固形分濃度で有機溶媒に溶解した塗料を、支持体に塗布・乾燥する工程であることを特徴とする請求項2記載の電子機器用接着剤シートの製造方法。
- 前記(2)の工程が、熱伝導性充填剤の含有量が固形分中0〜20体積%である接着剤組成物を5〜30重量%の固形分濃度で有機溶媒に溶解した塗料を、空隙を有する接着剤層(a)に塗布する工程であることを特徴とする請求項2記載の電子機器用接着剤シートの製造方法。
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2011023607A (ja) * | 2009-07-16 | 2011-02-03 | Nitto Denko Corp | 放熱性ダイボンドフィルム |
JP2012052099A (ja) * | 2010-08-05 | 2012-03-15 | Nitto Denko Corp | 接着テープ |
JP2012054293A (ja) * | 2010-08-31 | 2012-03-15 | Hitachi Chem Co Ltd | 半導体装置の製造方法 |
CN103002712A (zh) * | 2011-09-09 | 2013-03-27 | 日东电工株式会社 | 热传导性片及其制造方法 |
JP2013249390A (ja) * | 2012-05-31 | 2013-12-12 | Sumitomo Bakelite Co Ltd | 熱硬化性樹脂組成物および半導体装置 |
JP2014068020A (ja) * | 2013-10-11 | 2014-04-17 | Nitto Denko Corp | 放熱性ダイボンドフィルム |
CN106893507A (zh) * | 2015-12-18 | 2017-06-27 | 天津莱尔德电子材料有限公司 | 导热电绝缘体 |
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KR101806088B1 (ko) | 2017-09-21 | 2018-01-10 | 송선흥 | 전자파 차폐성 및 접착성이 우수한 커버레이 필름 |
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JP2000174184A (ja) * | 1998-12-08 | 2000-06-23 | Sekisui Chem Co Ltd | 熱伝導性シート及び熱伝導性部品 |
JP2000290613A (ja) * | 1999-04-13 | 2000-10-17 | Hitachi Chem Co Ltd | 熱硬化性接着シート |
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JP2000174184A (ja) * | 1998-12-08 | 2000-06-23 | Sekisui Chem Co Ltd | 熱伝導性シート及び熱伝導性部品 |
JP2000290613A (ja) * | 1999-04-13 | 2000-10-17 | Hitachi Chem Co Ltd | 熱硬化性接着シート |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011023607A (ja) * | 2009-07-16 | 2011-02-03 | Nitto Denko Corp | 放熱性ダイボンドフィルム |
JP2012052099A (ja) * | 2010-08-05 | 2012-03-15 | Nitto Denko Corp | 接着テープ |
JP2012054293A (ja) * | 2010-08-31 | 2012-03-15 | Hitachi Chem Co Ltd | 半導体装置の製造方法 |
CN103002712A (zh) * | 2011-09-09 | 2013-03-27 | 日东电工株式会社 | 热传导性片及其制造方法 |
JP2013249390A (ja) * | 2012-05-31 | 2013-12-12 | Sumitomo Bakelite Co Ltd | 熱硬化性樹脂組成物および半導体装置 |
JP2014068020A (ja) * | 2013-10-11 | 2014-04-17 | Nitto Denko Corp | 放熱性ダイボンドフィルム |
CN106893507A (zh) * | 2015-12-18 | 2017-06-27 | 天津莱尔德电子材料有限公司 | 导热电绝缘体 |
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