JP2008135448A - ダイシング・ダイボンドフィルム - Google Patents
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Abstract
【解決手段】支持基材1上に粘着剤層2を有し、該粘着剤層2上にダイボンド層3を有するダイシング・ダイボンドフィルム10であって、前記ダイボンド層3が残存揮発成分を除去したものであり、かつ260℃で1時間加熱することにより生じる重量損失が0.5重量%以下であるダイシング・ダイボンドフィルム。
【選択図】図1
Description
前記基板等上に半導体素子を3次元実装する場合、半導体素子の回路が形成される面側には、バッファーコート膜が形成されている。当該バッファーコート膜としては、例えば窒化珪素膜やポリイミド樹脂等の耐熱樹脂からなるものが挙げられる。
厚さが60μmのポリエチレンフィルムからなる支持基板上に、紫外線硬化可能なアクリル系粘着剤の溶液を塗布、乾燥して、厚さが20μmの粘着剤層を形成した。その後、粘着剤層に於ける、ウェハ貼り付け部分に対応する部分にのみ紫外線を500mJ/cm2照射して当該部分を紫外線硬化させた。これにより、粘着フィルムAを得た。
アクリル酸エチル−メチルメタクリレートを主成分とするアクリル酸エステル系ポリマー(根上工業(株)製、商品名;パラクロンW−197CM)100部に対して、エポキシ樹脂1(JER(株)製、エピコート1004)0.1部、エポキシ樹脂2(JER(株)製、エピコート827)0.2部、フェノール樹脂(三井化学(株)製、商品名:ミレックスXLC−4L)0.3部、球状シリカ(アドマテックス(株)製、商品名;SO−25R、平均粒径2μm)40部、硬化触媒(四国化成株式会社製、商品名;C11Z)0.1部をメチルエチルケトンに溶解して、濃度33.5重量%となる様に調製した。
アクリル酸エチル−メチルメタクリレートを主成分とするアクリル酸エステル系ポリマー(根上工業(株)製、商品名;パラクロンW−197CM)100部に対して、エポキシ樹脂1(JER(株)製、エピコート1004)0.5部、エポキシ樹脂2(JER(株)製、エピコート827)0.05部、フェノール樹脂(三井化学(株)製、商品名:ミレックスXLC−4L)0.1部、球状シリカ(アドマテックス(株)製、商品名;SO−25R、平均粒径2μm)40部、硬化触媒(四国化成株式会社製、商品名;C11Z)0.1部をメチルエチルケトンに溶解して、濃度22.3重量%となる様に調製した。
アクリル酸エチル−メチルメタクリレートを主成分とするアクリル酸エステル系ポリマー(根上工業(株)製、商品名;パラクロンW−197CM)100部に対して、エポキシ樹脂1(JER(株)製、エピコート1004)1部、エポキシ樹脂2(JER(株)製、エピコート827)0.3部、フェノール樹脂(三井化学(株)製、商品名:ミレックスXLC−4L)1部、球状シリカ(アドマテックス(株)製、商品名;SO−25R、平均粒径2μm)40部、硬化触媒(四国化成株式会社製、商品名;C11Z)0.1部をメチルエチルケトンに溶解して、濃度43.7重量%となる様に調製した。
実施例1、2又は比較例1、2で得たダイシング・ダイボンドフィルムからそれぞれ剥離ライナーを剥離し、40℃でロール圧着してミラーウェハに貼り合わせた。ミラーウェハとしては、回路パターンを形成した厚さ0.5mmの半導体ウェハを裏面研削処理して厚さ0.1mmとしたものを用いた。また、半導体ウェハの裏面研削条件、貼り合わせ条件は下記の通りである。
研削装置:ディスコ社製 DFG−840
半導体ウェハ:8インチ径(厚さ0.5mmから0.1μmに裏面研削)
貼り合わせ装置:DR−8500K(日東精機(株)製)
貼り付け装置:日東精機製/PM−8500
貼り付け速度計:10mm/min
貼り付け圧力:0.15MPa
貼り付け時のステージ温度:40℃
ダイシング方法:シングルカット
ダイシング装置:PISCO DFD651(商品名、株式会社日本ピスコ製)
ダイシング速度:80mm/sec
ダイシングブレード:2050−HECC
ダイシングブレード回転数:40,000rpm
ダイシングテープ切り込み深さ:20μm
ウェハチップサイズ:5mm×5mm
ピックアップ装置:CPS−100(NESマシナリー社製)
ニードル数:5〜9本
突き上げ量 :300μm
突き上げ速度:80mm/秒
引き落とし量:4mm
引き落とし後の加熱:なし
ダイボンダー:新川株式会社製、SPA−300
ダイボンド温度:120℃
ボンディング圧力:500gf
ボンディング時間:2sec
アフターキュア:なし
下記表1から明らかな様に、実施例1及び2のダイシング・ダイボンドフィルムに於いては、260℃で1時間加熱することにより生じる重量損失がそれぞれ0.28重量%、0.46重量%のダイボンド層を使用したことにより、ボイドの発生を低減でき、かつボイドのサイズも抑制できたことが確認された。その一方、比較例1及び2のダイシング・ダイボンドフィルムに於いては、ボイド数を低減することができず、また、ボイドのサイズも比較的大きいことが確認された。
2 粘着剤層
3 ダイボンド層
4 半導体ウェハ
5、15 半導体チップ
6 被着体
7 ボンディングワイヤー
8 封止樹脂
9 スペーサ
10、11 ダイボンドフィルム
13、21 ダイボンド層
Claims (7)
- 支持基材上に粘着剤層を有し、該粘着剤層上にダイボンド層を有するダイシング・ダイボンドフィルムであって、
前記ダイボンド層が残存揮発成分を除去したものであり、かつ260℃で1時間加熱することにより生じる重量損失が0.5重量%以下であることを特徴とするダイシング・ダイボンドフィルム。 - 前記ダイボンド層は、接着剤組成物の濃度が30〜50重量%の接着剤組成物溶液を、乾燥温度125〜140℃、乾燥時間2〜5分間の条件下で乾燥させて得られたものであることを特徴とする請求項1に記載のダイシング・ダイボンドフィルム。
- 前記ダイボンド層が熱硬化性接着剤を含み構成されることを特徴とする請求項1又は2に記載のダイシング・ダイボンドフィルム。
- 前記ダイボンド層が非導電性であることを特徴とする請求項1〜3の何れか1項に記載のダイシング・ダイボンドフィルム。
- 前記ダイボンド層は、前記粘着剤層上の一部にワーク貼り付け部分として設けられていることを特徴とする請求項1〜4の何れか1項に記載のダイシング・ダイボンドフィルム。
- 前記ダイボンド層の残存揮発成分が、前記粘着剤層から移行した成分を含むことを特徴とする請求項1〜5の何れか1項に記載のダイシング・ダイボンドフィルム。
- 支持基材上に粘着剤層を有し、該粘着剤層上にダイボンド層を有するダイシング・ダイボンドフィルムを用いた半導体装置の製造方法であって、
前記ダイシング・ダイボンドフィルムとして、前記ダイボンド層が残存揮発成分を除去したものを用意し、
前記ダイボンド層上にワークを圧着する工程と、
前記ワークをダイシングしてチップ状ワークを形成する工程と、
前記チップ状ワークを前記ダイボンド層とともに前記粘着剤層から剥離する工程と、
前記ダイボンド層を介して、チップ状ワークを被着体に固定する工程とを有することを特徴とする半導体装置の製造方法。
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JP2006318592A JP2008135448A (ja) | 2006-11-27 | 2006-11-27 | ダイシング・ダイボンドフィルム |
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WO2010024121A1 (ja) * | 2008-09-01 | 2010-03-04 | 日東電工株式会社 | ダイシング・ダイボンドフィルムの製造方法 |
JP2010074135A (ja) * | 2008-08-20 | 2010-04-02 | Hitachi Chem Co Ltd | 半導体装置の製造方法及びダイシングテープ一体型接着シート |
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JP2011223013A (ja) * | 2011-05-27 | 2011-11-04 | Nitto Denko Corp | ダイシング・ダイボンドフィルムの製造方法 |
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