JP5088376B2 - 回路部材接続用接着剤及び半導体装置 - Google Patents
回路部材接続用接着剤及び半導体装置 Download PDFInfo
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- JP5088376B2 JP5088376B2 JP2009543887A JP2009543887A JP5088376B2 JP 5088376 B2 JP5088376 B2 JP 5088376B2 JP 2009543887 A JP2009543887 A JP 2009543887A JP 2009543887 A JP2009543887 A JP 2009543887A JP 5088376 B2 JP5088376 B2 JP 5088376B2
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
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Description
ようにすることが好適である。金属水酸化物粒子の平均粒径をこの範囲にすることで、その分散性や樹脂の流動性を向上させることができ、樹脂の補強効果も期待できる。
三次元架橋性樹脂としてエポキシ樹脂EP−1032−H60(ジャパンエポキシレジン株式会社製、製品名)20重量部、エポキシ樹脂YL980(ジャパンエポキシレジン株式会社製、製品名)15重量部、フェノキシ樹脂YP50S(東都化成株式会社、製品名)25重量部、マイクロカプセル型硬化剤としてHX−3941HP(旭化成株式会社製、製品名)40重量部、及びシランカップリング剤SH6040(東レダウコーニングシリコーン製、製品名)1重量部を、トルエンと酢酸エチルの混合溶媒中に溶解し、接着樹脂組成物(樹脂組成物)のワニスを得た。このワニスの一部をセパレータフィルム(PETフィルム)上にロールコータを用いて塗布した後、70℃のオーブンで10分間乾燥させることによって、セパレータ上に厚み25μmの接着剤樹脂組成物の膜を得た。
実施例1の水酸化マグネシウム粒子に代えて平均粒径1.3μmの水酸化アルミBF013(日本軽金属株式会社製、製品名)60.5重量部を加えたこと以外は実施例1と同様にして回路部材接続用接着剤を得た。
実施例1の水酸化マグネシウム粒子に代えて平均粒径0.5μmのシリカ粒子SE2050(アドマテックス社製、製品名)55.25重量部を加えたこと以外は実施例1と同様にして回路接続用接着剤を得た。
実施例1〜2及び比較例1〜2で得た回路接続用接着剤で接続した半導体装置をそれぞれ作製し、特性確認を実施した。
ジェイシーエム製のダイアタッチフィルムマウンターの吸着ステージを80℃に加熱後、吸着ステージ上に金めっきバンプが形成された厚さ150μm、直径6インチの半導体ウェハをバンプ側を上に向けて搭載した。実施例1〜2及び比較例1〜2記載の回路部材接続用接着剤をセパレータごと200mm×200mmに切断し、絶縁性接着剤層側を半導体ウェハのバンプ側に向け、エアを巻き込まないように半導体ウェハの端からダイアタッチマウンターの貼付ローラで押しつけてラミネートした。ラミネート後、ウェハの外形に沿って接着剤のはみ出し部分を切断した。切断後、セパレータをはく離した。次いでセパレータ剥離後のウェハと回路部材接続用接着剤の積層体を、接着剤の貼付いた面を下に向けてステージ温度を25℃に設定したダイアタッチフィルムマウンターの吸着ステージに搭載し、さらに12インチウェハ用のダイシングフレームをウェハ外周に設置した。UV硬化型ダイシングテープUC−334EP−110(古川電工製、製品名)の粘着面を半導体ウェハ側に向け、エアを巻き込まないようにダイシングフレームの端からダイアタッチマウンターの貼付ローラで押しつけてラミネートした。ラミネート後、ダイシングフレームの外周と内周の中間付近でダイシングテープを切断し、ダイシングフレームに固定された回路部材接続用接着剤/半導体ウェハ/ダイシングテープ積層体を得た。
ダイシングフレームに固定された回路部材接続用接着剤/半導体ウェハ/ダイシングテープ積層体を株式会社ディスコ製フルオートマチックダイシングソーDFD6361に搭載した。接着剤を透過してスクライブラインの位置合わせを行った。シングルカットでダイシングテープ内まで10mm×10mmの間隔で切断する。切断後、洗浄し、エアー吹きつけで水分を飛ばした後、ダイシングテープ側からUV照射を行った。この後、ダイシングテープ側から半導体ウェハ側に突き上げ、回路部材接続用接着剤がバンプ側に形成された10mm×10mmの半導体チップを得た。
回路部材接続用接着剤付き半導体チップの接着剤面をチップトレー底面に向けた状態でチップトレーに収納し、これをパナソニック製フリップチップボンダーFCB3のチップトレー収納場所に設置した。次いでAu/NiめっきCu回路プリント基板を基板搭載ステージに設置した。半導体チップ回路面に形成されたアルミ製のアライメントマークを回路部材接続用接着剤側から認識し、基板と位置あわせを行ったのち、200℃10秒1.86MPaの条件で加熱加圧を行い、半導体装置を得た。得られた半導体装置の176バンプ連結デージーチェーンでの接続抵抗は8.6Ωであり、良好な接続状態であることを確認した。さらに、半導体装置を30℃、相対湿度60%の槽内に192時間放置した後、IRリフロー処理(265℃最大)3回行った結果、チップのはく離や導通不良の発生はなかった。さらに、IRリフロー後の半導体装置を高温高湿試験機(85℃/85%RH)に200h放置し、放置後の接続抵抗に導通不良が発生しないことを確認した。また、IRリフロー後の半導体装置を温度サイクル試験機(−55℃30分、室温5分、125℃30分)内に放置し、槽内での接続抵抗測定を行い、200サイクル経過後の導通不良が発生しない事を確認した。
実施例及び比較例で得た回路部材接続用接着剤をセパレータごと180℃に設定したオーブンに3時間放置し、加熱硬化処理を行った。加熱硬化後のフィルムをセパレータからはく離し、30mm×2mmの大きさに切断した。セイコーインスツルメンツ社製TMA/SS6100(製品名)を用い、チャック間20mmに設定後、測定温度範囲20℃〜300℃、昇温速度5℃/min、断面積に対し0.5MPa圧力となる荷重条件で引張り試験モードにて熱機械分析を行い、線膨張係数を求めた。
実施例及び比較例で得た回路部材接続用接着剤をアルミ製測定容器に2〜10mg計量した後、パーキンエルマー社製の示差走査熱量測定装置DSC(Differential Scaning Calorimeter)Pylis1(製品名)で30〜300℃まで20℃/minの昇温速度で発熱量測定を行い、これを初期発熱量とした。次いで、熱圧着装置の加熱ヘッドをセパレータに挟んだ熱電対で温度確認を行って20秒後に180℃に達する温度に設定した。この加熱ヘッド設定で、セパレータに挟んだ回路部材接続用接着剤を20秒間加熱し、熱圧着時と同等の加熱処理が施された状態のフィルムを得た。加熱処理後のフィルムを2〜10mg計量してアルミ製測定容器にいれ、DSCで30〜300℃まで20℃/minの昇温速度で発熱量測定を行い、これを加熱後発熱量とした。得られた発熱量から次の式で反応率(%)を算出した。
式;(初期発熱量−加熱後発熱量)/(初期発熱量)×100
プボンダーでのアライメントマーク認識の可否、反応率、さらに圧着後の接続抵抗値及び
信頼性試験後の接続抵抗値を実施例及び比較例ごとに表3に示した。
Claims (7)
- 相対向する回路基板を接続するための回路部材接続用接着剤であって、
熱可塑性樹脂、熱硬化性樹脂及び硬化剤を含む樹脂組成物と、該組成物中に分散された金属水酸化物粒子とからなり、
前記熱可塑性樹脂がフェノキシ樹脂又はアクリル樹脂であり、
前記熱硬化性樹脂がエポキシ樹脂であり、
前記硬化剤がイミダゾール系又はアミン系の硬化剤であり、
前記金属水酸化物が水酸化マグネシウム、水酸化カルシウム、水酸化バリウム又は水酸化アルミニウムであり、
前記金属水酸化物粒子の配合量が、前記樹脂組成物100重量部に対して50〜100重量部である、回路部材接続用接着剤。 - 未硬化時の可視光並行透過率が15〜100%である、請求項1記載の回路部材接続用接着剤。
- 前記金属水酸化物粒子は、屈折率が1.5〜1.7である、請求項1又は2に記載の回路部材接続用接着剤。
- 前記金属水酸化物粒子は、平均粒径が0.1μm〜10μmである、請求項1〜3のいずれか一項に記載の回路部材接続用接着剤。
- 180℃で20秒間加熱した後の示差走査熱量測定に基づく反応率が、75%以上である、請求項1〜4のいずれか一項に記載の回路部材接続用接着剤。
- 40℃〜100℃の線膨張係数が、70×10−6/℃以下である、請求項1〜5のいずれか一項に記載の回路部材接続用接着剤。
- 請求項1〜6のいずれか一項に記載の回路部材接続用接着剤で接合された回路基板を有する半導体装置。
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WO1997029490A1 (fr) * | 1996-02-08 | 1997-08-14 | Asahi Kasei Kogyo Kabushiki Kaisha | Composition anisotrope conductrice |
JP2004269626A (ja) * | 2003-03-06 | 2004-09-30 | Sony Chem Corp | 接着剤、接着剤の製造方法及び電気装置 |
JP2006199778A (ja) * | 2005-01-19 | 2006-08-03 | Hitachi Chem Co Ltd | 接着剤組成物、回路接続用接着剤及びこれを用いた回路接続方法、接続体 |
JP2007016088A (ja) * | 2005-07-06 | 2007-01-25 | Asahi Kasei Electronics Co Ltd | 異方導電性接着シート及び微細接続構造体 |
JP2007091959A (ja) * | 2005-09-30 | 2007-04-12 | Sumitomo Electric Ind Ltd | 異方導電性接着剤 |
WO2008084811A1 (ja) * | 2007-01-10 | 2008-07-17 | Hitachi Chemical Company, Ltd. | 回路部材接続用接着剤及びこれを用いた半導体装置 |
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JP2698528B2 (ja) * | 1993-03-26 | 1998-01-19 | 日本碍子株式会社 | ノンセラミック碍子のハウジングに用いられる電気絶縁物 |
JP2002371263A (ja) * | 2001-06-14 | 2002-12-26 | Nitto Denko Corp | 多層フレキシブルプリント回路板用接着剤組成物およびそれを用いた多層フレキシブルプリント回路板 |
KR20030001231A (ko) * | 2001-06-25 | 2003-01-06 | 텔레포스 주식회사 | 증가된 점성을 가지는 이방성 전도성 접착제, 이를 이용한본딩 방법 및 집적 회로 패키지 |
JP2003073641A (ja) * | 2001-08-31 | 2003-03-12 | Hitachi Chem Co Ltd | 難燃性接着フィルム、半導体搭載用配線基板、半導体装置及び半導体装置の製造方法 |
JP2003206452A (ja) * | 2002-01-10 | 2003-07-22 | Toray Ind Inc | 半導体装置用接着剤組成物およびそれを用いた半導体装置用接着剤シート、半導体接続用基板ならびに半導体装置 |
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JPS60117572A (ja) * | 1983-11-28 | 1985-06-25 | 日立化成工業株式会社 | 回路の接続方法 |
WO1997029490A1 (fr) * | 1996-02-08 | 1997-08-14 | Asahi Kasei Kogyo Kabushiki Kaisha | Composition anisotrope conductrice |
JP2004269626A (ja) * | 2003-03-06 | 2004-09-30 | Sony Chem Corp | 接着剤、接着剤の製造方法及び電気装置 |
JP2006199778A (ja) * | 2005-01-19 | 2006-08-03 | Hitachi Chem Co Ltd | 接着剤組成物、回路接続用接着剤及びこれを用いた回路接続方法、接続体 |
JP2007016088A (ja) * | 2005-07-06 | 2007-01-25 | Asahi Kasei Electronics Co Ltd | 異方導電性接着シート及び微細接続構造体 |
JP2007091959A (ja) * | 2005-09-30 | 2007-04-12 | Sumitomo Electric Ind Ltd | 異方導電性接着剤 |
WO2008084811A1 (ja) * | 2007-01-10 | 2008-07-17 | Hitachi Chemical Company, Ltd. | 回路部材接続用接着剤及びこれを用いた半導体装置 |
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JPWO2009069783A1 (ja) | 2011-04-21 |
CN101835866A (zh) | 2010-09-15 |
KR101302933B1 (ko) | 2013-09-06 |
WO2009069783A1 (ja) | 2009-06-04 |
KR20100074312A (ko) | 2010-07-01 |
CN101835866B (zh) | 2013-01-02 |
TWI419954B (zh) | 2013-12-21 |
TW200934851A (en) | 2009-08-16 |
CN102977809A (zh) | 2013-03-20 |
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