JP5402109B2 - 異方性導電フィルム及び発光装置 - Google Patents
異方性導電フィルム及び発光装置 Download PDFInfo
- Publication number
- JP5402109B2 JP5402109B2 JP2009057316A JP2009057316A JP5402109B2 JP 5402109 B2 JP5402109 B2 JP 5402109B2 JP 2009057316 A JP2009057316 A JP 2009057316A JP 2009057316 A JP2009057316 A JP 2009057316A JP 5402109 B2 JP5402109 B2 JP 5402109B2
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- JP
- Japan
- Prior art keywords
- light
- anisotropic conductive
- conductive film
- adhesive layer
- reflective
- 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.)
- Expired - Fee Related
Links
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Images
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Description
該異方性導電フィルムが、光反射性絶縁接着層と異方性導電接着層とが積層されてなり、該光反射性絶縁接着層が、絶縁性接着剤中に光反射性粒子が分散してなる異方性導電フィルムである発光装置を提供する。
(1a)光反射性粒子の作成
撹拌機つきフラスコに鱗片状銀粒子(縦10μm、横10μm、厚0.5μm)5gとトルエン50mlとを投入し、撹拌しながらフラスコにシランカップリング剤(3−メタクリロキシプロピルトリエトキシシラン)0.25gを投入し、25℃で60分間撹拌した。次に、この混合物に、メタクリル酸メチル2gとメタクリル酸−2−ヒドロキシエチル2gとベンゾイルパーオキサイド0.04gと2,4−トリレンジイソシアネート1gとを投入し、80℃で12時間撹拌することにより、光反射性粒子として絶縁被覆鱗片状銀粒子を得た。絶縁被覆を含めた光反射性粒子の平均的大きさは、縦10μm、横10μm、厚み0.5μmであった。
水添化エポキシ樹脂(YX8000、JER(株))に酸無水物(MH−700、新日本理化(株))、イミダゾール(2MZA、四国化成(株))を加えたことにより絶縁性バインダー樹脂を調製した。得られた絶縁性バインダー樹脂100質量部と絶縁被覆鱗片状銀粒子50質量部とを、トルエン100mlに分散混合し、得られた混合物を、剥離ポリエチレンテレフタレート(PET)フィルムに、乾燥厚で10μmとなるように塗布し、80℃で5分間乾燥することにより、光反射性絶縁性接着層フィルムを得た。
前述の(1b)と同様の絶縁性バインダー樹脂100質量部と銀メッキ被覆樹脂粒子(粒径5μm)20質量部とを、トルエンを100mlに分散混合し、得られた混合物を、剥離ポリエチレンテレフタレート(PET)フィルムに、乾燥厚で10μmとなるように塗布し、80℃で5分間乾燥することにより、異方性導電接着層フィルムを得た。
得られた光反射性絶縁性接着層フィルムと異方性導電接着層フィルムとを重ね合わせ、両側のPETフィルムを介して、40℃で10秒間加圧することにより、両フィルムを積層することにより異方性導電フィルムを得た。
200℃の加熱ヘッドを用い、発光ダイオード素子(If=20mA時の特性が、Vf=3.3V、光度=150mcd、ドミナント波長=470nmである)を、異方性導電フィルムを介しガラスエポキシ基板に1Kg/チップで20秒間加熱加圧することにより接着した。この際、発光ダイオード素子のバンプ部分には圧力がかかるため、光反射性絶縁接着層フィルムの接着剤は排除され、異方性導電接着層の導電粒子で発光ダイオード素子とガラスエポキシ基板との間の導通をとることができた。なお、バンプ以外の光反射性絶縁接着層は排除されず、光反射機能は維持されていた。
光反射性粒子として、絶縁被覆鱗片状銀粒子に代えて、平均粒径0.2μmの二酸化チタン粒子(JR405、テイカ(株))を50質量部使用する以外は実施例1と同様に光反射性絶縁性接着層フィルム、異方性導電接着層フィルムを作成し、更に、異方性導電フィルムを作成した。この異方性導電フィルムを使用し、実施例1と同様に発光ダイオード素子を、ガラスエポキシ基板に接続し、特性評価を行った。得られた結果を表1に示す。
異方性導電フィルムに代えて銀ペーストを使用して、発光ダイオードをガラスエポキシ基板に接続し、実施例1と同様に特性評価を行った。得られた結果を表1に示す。
光反射性絶縁性接着層フィルムを使用せずに、実施例1の異方性導電接着層フィルムそのものを異方性導電フィルムとして使用し、実施例1と同様に発光ダイオード素子を、ガラスエポキシ基板に接続し、特性評価を行った。得られた結果を表1に示す。
2 異方性導電接着層
21 基板
22 接続端子
23 LED素子
24 n電極
25 p電極
26 バンプ
100 異方性導電フィルム
200 発光装置
Claims (6)
- 光反射性絶縁接着層と異方性導電接着層とが積層されてなる異方性導電フィルムであって、該光反射性絶縁接着層が、絶縁性接着剤中に光反射性粒子として絶縁被膜で被覆された鱗片状銀粒子が分散したものである異方性導電フィルム。
- 光反射性絶縁接着層と異方性導電接着層とが積層されてなる異方性導電フィルムであって、該光反射性絶縁接着層が、絶縁性接着剤中に光反射性粒子として絶縁被膜で被覆された鱗片状金属粒子が分散したものであり、鱗片状金属粒子を被覆する絶縁被膜が、メタクリル酸メチルとメタクリル酸2−ヒドロキシエチルとのラジカル共重合体被膜である異方性導電フィルム。
- 金属粒子が、鱗片状銀粒子である請求項2記載の異方性導電フィルム。
- 該絶縁被膜が、イソシアネート系架橋剤で架橋されている請求項2又は3記載の異方性導電フィルム。
- 基板上の接続端子と、発光ダイオード素子の接続用のバンプとの間に異方性導電フィルムを介し、該基板と該発光ダイオード素子とがフリップチップ実装されている発光装置であって、
該異方性導電フィルムが、請求項1〜4のいずれかに記載の異方性導電フィルムである発光装置。 - 該異方性導電フィルムの光反射性絶縁接着層が発光ダイオード素子側に配置されている請求項5記載の発光装置。
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JP2009057316A JP5402109B2 (ja) | 2009-02-27 | 2009-03-11 | 異方性導電フィルム及び発光装置 |
US13/142,956 US8444882B2 (en) | 2009-02-27 | 2010-02-22 | Anisotropic conductive film and light emitting device |
CN201080009516.2A CN102334238B (zh) | 2009-02-27 | 2010-02-22 | 各向异性导电膜和发光装置 |
PCT/JP2010/052600 WO2010098273A1 (ja) | 2009-02-27 | 2010-02-22 | 異方性導電フィルム及び発光装置 |
KR1020117016655A KR101695994B1 (ko) | 2009-02-27 | 2010-02-22 | 이방성 도전 필름 및 발광 장치 |
TW099105550A TWI478180B (zh) | 2009-02-27 | 2010-02-26 | Anisotropic conductive film and a light emitting device |
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JP4222017B2 (ja) * | 2001-12-18 | 2009-02-12 | 日亜化学工業株式会社 | 発光装置 |
US20050133808A1 (en) | 2003-09-11 | 2005-06-23 | Kyocera Corporation | Package for housing light-emitting element, light-emitting apparatus and illumination apparatus |
JP3921474B2 (ja) * | 2003-10-30 | 2007-05-30 | 京セラ株式会社 | 発光装置および照明装置 |
TWI245436B (en) * | 2003-10-30 | 2005-12-11 | Kyocera Corp | Package for housing light-emitting element, light-emitting apparatus and illumination apparatus |
JP4385794B2 (ja) * | 2004-02-26 | 2009-12-16 | ソニーケミカル&インフォメーションデバイス株式会社 | 異方性導電接続方法 |
KR20070042615A (ko) * | 2005-10-19 | 2007-04-24 | 삼성전자주식회사 | 어레이 기판 및 이의 제조방법 |
WO2008020482A1 (fr) * | 2006-08-18 | 2008-02-21 | Reiko Co., Ltd. | Matière isolante qui excelle par son brillant métallique et article moulé qui utilise celle-ci |
JP5617210B2 (ja) * | 2009-09-14 | 2014-11-05 | デクセリアルズ株式会社 | 光反射性異方性導電接着剤及び発光装置 |
EP2581955A4 (en) * | 2010-06-09 | 2015-12-30 | Dexerials Corp | LIGHT REFLECTING AND ELECTRICALLY CONDUCTIVE ANISOTROPE PASTE AND LIGHT-EMITTING DEVICE |
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2010
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- 2010-02-22 US US13/142,956 patent/US8444882B2/en not_active Expired - Fee Related
- 2010-02-22 KR KR1020117016655A patent/KR101695994B1/ko active IP Right Grant
- 2010-02-22 CN CN201080009516.2A patent/CN102334238B/zh not_active Expired - Fee Related
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Also Published As
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WO2010098273A1 (ja) | 2010-09-02 |
JP2010225597A (ja) | 2010-10-07 |
CN102334238B (zh) | 2016-03-30 |
KR101695994B1 (ko) | 2017-01-13 |
US20110266578A1 (en) | 2011-11-03 |
US8444882B2 (en) | 2013-05-21 |
CN102334238A (zh) | 2012-01-25 |
KR20110126104A (ko) | 2011-11-22 |
TW201032241A (en) | 2010-09-01 |
TWI478180B (zh) | 2015-03-21 |
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