JP5561949B2 - 熱硬化型ダイボンドフィルム - Google Patents
熱硬化型ダイボンドフィルム Download PDFInfo
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- JP5561949B2 JP5561949B2 JP2009094150A JP2009094150A JP5561949B2 JP 5561949 B2 JP5561949 B2 JP 5561949B2 JP 2009094150 A JP2009094150 A JP 2009094150A JP 2009094150 A JP2009094150 A JP 2009094150A JP 5561949 B2 JP5561949 B2 JP 5561949B2
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Description
本発明の熱硬化型ダイボンドフィルム(以下、「ダイボンドフィルム」という。)について、ダイシングフィルムと一体的に積層されたダイシング・ダイボンドフィルムを例にして以下に説明する。図1は、本実施の形態に係るダイシング・ダイボンドフィルムを示す断面模式図である。図2は、本実施の形態に係る他のダイシング・ダイボンドフィルムを示す断面模式図である。
先ず、基材1は、従来公知の製膜方法により製膜することができる。当該製膜方法としては、例えばカレンダー製膜法、有機溶媒中でのキャスティング法、密閉系でのインフレーション押出法、Tダイ押出法、共押出し法、ドライラミネート法等が例示できる。
先ず、ダイシング・ダイボンドフィルム3、3’の形成材料である接着剤組成物溶液を作製する。当該接着剤組成物溶液には、前述の通り、前記接着剤組成物や熱硬化触媒、その他各種の添加剤等が配合されている。このとき、接着剤組成物溶液中における熱硬化触媒は溶液中で結晶化することなく均一に溶解しているのが好ましい。また、本発明に係る熱硬化触媒であると、接着剤組成物溶液中に溶解させる時間を短縮することができる。具体的には、有機成分100重量部に対し、0.2〜1重量部の範囲で溶解させる際に、溶解時間は0.1〜2時間の範囲内で行うことが可能になる。但し、成膜されたフィルム中において結晶化されていなければ、接着剤組成物溶液中で結晶化し、あるいは分散することなく不溶状態となっていてもよい。
本発明のダイシング・ダイボンドフィルム10、12は、ダイボンドフィルム3、3’上に任意に設けられたセパレータを適宜に剥離して、次の様に使用される。以下では、図3を参照しながらダイシング・ダイボンドフィルム10を用いた場合を例にして説明する。
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、パラクロンW−197CM)100重量部に対して、ビスフェノールA型エポキシ樹脂1(JER(株)製、エピコート1004)87重量部、ビスフェノールA型エポキシ樹脂2(JER(株)製、エピコート827)79重量部、フェノールアラルキル樹脂(三井化学(株)製、ミレックスXLC−4L)178重量部、球状シリカ(アドマテックス(株)製、SO−25R)296重量部、熱硬化触媒としてのテトラフェニルホスホニウムチオシアネート(北興化学工業(株)製、商品名;TPP−SCN)0.2重量部をメチルエチルケトンに溶解させ、濃度23.6重量%の接着剤組成物溶液を得た。尚、各構成材料をメチルエチルケトンに溶解させる際の溶解温度は、23℃であり、熱硬化触媒が当該溶液中に結晶化することなく溶解するのに要した溶解時間は20分間であった。
本実施例2に於いては、熱硬化触媒の添加量を1.0重量部に変更したこと以外は、前記実施例1と同様にして、本実施例に係るダイボンドフィルムBを作製した。尚、接着剤組成物溶液の作製に於いて、各構成材料をメチルエチルケトンに溶解させる際の溶解温度は、23℃であり、熱硬化触媒が当該溶液中に結晶化することなく溶解するのに要した溶解時間は20分間であった。
本実施例3に於いては、熱硬化触媒として2,4−ジアミノ−6−[2’−メチルイミダゾリル−(1’)]−エチル−s−トリアジンイソシアヌル酸付加物(商品名;2MAOK−PW、四国化成(株)製)を0.2重量部用いたこと以外は、前記実施例1と同様にして、本実施例に係るダイボンドフィルムCを作製した。尚、接着剤組成物溶液の作製に於いて、各構成材料をメチルエチルケトンに溶解させる際の溶解温度は、23℃であり、熱硬化触媒が当該溶液中に結晶化することなく溶解するのに要した溶解時間は20分間であった。
本実施例4に於いては、熱硬化触媒の添加量を1.0重量部に変更したこと以外は、前記実施例3と同様にして、本実施例に係るダイボンドフィルムDを作製した。尚、接着剤組成物溶液の作製に於いて、各構成材料をメチルエチルケトンに溶解させる際の溶解温度は、23℃であり、熱硬化触媒が当該溶液中に結晶化することなく溶解するのに要した溶解時間は20分間であった。
本実施例5に於いては、熱硬化触媒としてベンジルトリフェニルホスホニウムテトラフェニルボレート(北興化学工業(株)製、商品名;TPP−ZK)を用い、更にその添加量を1.0重量部に変更したこと以外は、前記実施例1と同様にして、本実施例に係るダイボンドフィルムFを作製した。尚、接着剤組成物溶液の作製に於いて、各構成材料をメチルエチルケトンに溶解させる際の溶解温度は、23℃であり、熱硬化触媒が当該溶液中に結晶化することなく溶解するのに要した溶解時間は20分間であった。
本比較例1に於いては、熱硬化触媒の添加量を0.1重量部に変更したこと以外は、前記実施例1と同様にして、本比較例に係るダイボンドフィルムGを作製した。尚、接着剤組成物溶液の作製に於いて、各構成材料をメチルエチルケトンに溶解させる際の溶解温度は、23℃であり、熱硬化触媒が当該溶液中に結晶化することなく溶解するのに要した溶解時間は20分間であった。
本比較例2に於いては、熱硬化触媒の添加量を1.5重量部に変更したこと以外は、前記実施例1と同様にして、本比較例に係るダイボンドフィルムHを作製した。尚、接着剤組成物溶液の作製に於いて、各構成材料をメチルエチルケトンに溶解させる際の溶解温度は、23℃であり、熱硬化触媒が当該溶液中に結晶化することなく溶解するのに要した溶解時間は20分間であった。
本比較例3に於いては、熱硬化触媒として2,4−ジアミノ−6−[2’−メチルイミダゾリル−(1’)]−エチル−s−トリアジンイソシアヌル酸付加物(商品名;2MAOK−PW、四国化成(株)製)を用い、更にその添加量を0.1重量部に変更したこと以外は、前記実施例1と同様にして、本比較例4に係るダイボンドフィルムIを作製した。尚、接着剤組成物溶液の作製に於いて、各構成材料をメチルエチルケトンに溶解させる際の溶解温度は、23℃であり、熱硬化触媒が当該溶液中に結晶化することなく溶解するのに要した溶解時間は20分間であった。
本比較例4に於いては、熱硬化触媒として2,4−ジアミノ−6−[2’−メチルイミダゾリル−(1’)]−エチル−s−トリアジンイソシアヌル酸付加物(商品名;2MAOK−PW、四国化成(株)製)を用い、更にその添加量を1.5重量部に変更したこと以外は、前記実施例1と同様にして、本比較例4に係るダイボンドフィルムIを作製した。尚、接着剤組成物溶液の作製に於いて、各構成材料をメチルエチルケトンに溶解させる際の溶解温度は、23℃であり、熱硬化触媒が当該溶液中に結晶化することなく溶解するのに要した溶解時間は20分間であった。
ダイボンドフィルムA〜Iについて、それぞれ初期長さ40mm、幅10mmの短冊状の測定片となる様に切断した。次に、テンシロン万能試験機(RTE−1210、エーアンドディー社製)を用いて引張速度10mm/分、チャック間距離30mmの条件下で、25℃に於ける引張破断伸度を測定した。尚、測定は、各ダイボンドフィルムA〜Iを室温保存しない場合と、30日間室温保存(25℃、55%RH)した場合のそれぞれについて行った。
ダイボンドフィルムA〜Iをそれぞれ40℃で半導体素子に貼り付け、160℃、0.2MPaでBGA基板にマウントした。続いて、各ダイボンドフィルムA〜Iを所定条件下で熱硬化させた後、175℃に於けるせん断接着力を測定した。尚、各ダイボンドフィルムA〜Iを熱硬化させる際の加熱処理条件は、下記表1及び2の通りである。
ダイボンドフィルムA〜Iをそれぞれ30日間室温保存(25℃、55%RH)した。その後、ホットロールラミネーターを用いて、ウエハ(直径6インチ)にそれぞれ貼り合わせた。貼り合わせ条件として、温度40℃、0.1m/分、圧力0.5MPaとした。貼り合わせ後、ダイボンドフィルムA〜Iについて割れ・欠けの発生の有無を目視にて確認した。その結果、割れ・欠けが発生しなかったものをウェハマウント性が良好(○)とし、発生したものをウェハマウント性が不良(×)とした。
ワイヤーボンディング性については、ダイボンドフィルムの熱硬化後の175℃に於けるせん断接着力が0.2MPa以上であった場合を良好(○)とし、0.2MPa未満の場合を不良(×)とした。
下記表1及び2の結果から分かる通り、実施例1〜4の様に、非結晶状態で熱硬化触媒が含有するダイボンドフィルムA〜Dであると、30日間の室温保存後の破断伸度及びウェハマウント性の何れも室温保存性に優れ、ワイヤーボンディング性も良好であることが確認された。
2 粘着剤層
3、3’ ダイボンドフィルム(熱硬化型ダイボンドフィルム)
4 半導体ウェハ
5 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、12 ダイシング・ダイボンドフィルム
11 ダイシングフィルム
13 ダイボンドフィルム(熱硬化型ダイボンドフィルム)
15 半導体チップ
21、22 ダイボンドフィルム(熱硬化型ダイボンドフィルム)
Claims (9)
- 半導体装置の製造の際に用いる熱硬化型ダイボンドフィルムであって、
アクリル樹脂及び熱硬化性樹脂を含み、
該フィルム中の前記アクリル樹脂100重量部に対し含有量が0.2〜1重量部の範囲内の熱硬化触媒が、非結晶状態で含有されたものであり、
前記熱硬化触媒が、イミダゾール骨格を有する塩からなる熱硬化型ダイボンドフィルム。 - 前記フィルム中にはフェノール樹脂が含まれており、前記熱硬化触媒が前記フェノール樹脂に対し溶解性を示すものである請求項1に記載の熱硬化型ダイボンドフィルム。
- 室温下で30日以上保存した後の引張破断伸度が、長手方向及び幅方向の少なくとも何れか一方において200%以上である請求項1又は2に記載の熱硬化型ダイボンドフィルム。
- 熱硬化後の260℃における引張貯蔵弾性率が10MPa以上である請求項1〜3の何れか1項に記載の熱硬化型ダイボンドフィルム。
- 熱硬化後の貼り合わせ面に於ける表面エネルギーが40mJ/m2以下である請求項1〜4の何れか1項に記載の熱硬化型ダイボンドフィルム。
- 熱硬化後の、85℃、85%RHの雰囲気下で168時間放置したときの吸湿率が1重量%以下である請求項1〜5の何れか1項に記載の熱硬化型ダイボンドフィルム。
- 熱硬化後の、260℃、1時間加熱後の重量減少量が1重量%以下である請求項1〜6の何れか1項に記載の熱硬化型ダイボンドフィルム。
- 請求項1〜7の何れか1項に記載の熱硬化型ダイボンドフィルムが、ダイシングフィルム上に積層されたダイシング・ダイボンドフィルムであって、
前記ダイボンドフィルムは基材上に粘着剤層が積層された構造であり、前記熱硬化型ダイボンドフィルムは前記粘着剤層上に積層されているダイシング・ダイボンドフィルム。 - 請求項8に記載のダイシング・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、
前記熱硬化型ダイボンドフィルムを貼り合わせ面として、半導体ウェハの裏面に前記ダイシング・ダイボンドフィルムを貼り合わせる貼り合わせ工程と、
前記半導体ウェハを前記熱硬化型ダイボンドフィルムと共にダイシングして、チップ状の半導体素子を形成するダイシング工程と、
前記半導体素子を、前記ダイシング・ダイボンドフィルムから前記熱硬化型ダイボンドフィルムと共にピックアップするピックアップ工程と、
前記熱硬化型ダイボンドフィルムを介して、前記半導体素子を被着体上にダイボンドするダイボンド工程と、
前記熱硬化型ダイボンドフィルムを、加熱温度80〜200℃、加熱時間0.1〜24時間の範囲内で加熱することにより熱硬化させる熱硬化工程と、
前記半導体素子にワイヤーボンディングをするワイヤーボンディング工程とを有する半導体装置の製造方法。
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KR20100031668A KR101038374B1 (ko) | 2009-04-08 | 2010-04-07 | 열경화형 다이본드 필름 |
US12/755,810 US20100261314A1 (en) | 2009-04-08 | 2010-04-07 | Thermosetting die bonding film |
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US8198176B2 (en) * | 2007-10-09 | 2012-06-12 | Hitachi Chemical Company, Ltd. | Method for producing semiconductor chip with adhesive film, adhesive film for semiconductor used in the method, and method for producing semiconductor device |
KR100922226B1 (ko) * | 2007-12-10 | 2009-10-20 | 주식회사 엘지화학 | 접착 필름, 다이싱 다이본딩 필름 및 반도체 장치 |
TWI401773B (zh) * | 2010-05-14 | 2013-07-11 | Chipmos Technologies Inc | 晶片封裝裝置及其製造方法 |
JP5558589B2 (ja) * | 2010-12-28 | 2014-07-23 | 太陽誘電株式会社 | タッチパネル装置 |
KR102152474B1 (ko) * | 2011-12-16 | 2020-09-04 | 히타치가세이가부시끼가이샤 | 접착제 조성물, 필름상 접착제, 접착 시트, 접속 구조체 및 접속 구조체의 제조 방법 |
JP5425975B2 (ja) | 2012-06-28 | 2014-02-26 | 日東電工株式会社 | 接着フィルム、半導体装置の製造方法及び半導体装置 |
TWI614323B (zh) | 2012-09-25 | 2018-02-11 | Sumitomo Bakelite Co., Ltd. | 切割膜片 |
EP2717307A1 (en) * | 2012-10-04 | 2014-04-09 | Nederlandse Organisatie voor toegepast -natuurwetenschappelijk onderzoek TNO | Releasable substrate on a carrier |
JP6312498B2 (ja) * | 2014-03-31 | 2018-04-18 | 日東電工株式会社 | ダイシングフィルム、ダイシング・ダイボンドフィルム及び半導体装置の製造方法 |
JP6547221B2 (ja) * | 2014-12-16 | 2019-07-24 | リンテック株式会社 | ダイ接着用接着剤 |
WO2017073627A1 (ja) * | 2015-10-29 | 2017-05-04 | リンテック株式会社 | 保護膜形成用フィルム及び保護膜形成用複合シート |
JP7007827B2 (ja) * | 2017-07-28 | 2022-01-25 | 日東電工株式会社 | ダイボンドフィルム、ダイシングダイボンドフィルム、および半導体装置製造方法 |
CN109247003A (zh) * | 2018-04-12 | 2019-01-18 | 庆鼎精密电子(淮安)有限公司 | 电磁屏蔽膜及其制作方法 |
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CN113588375B (zh) * | 2021-08-20 | 2023-09-29 | 中科光华(西安)智能生物科技有限公司 | 一种高稳定性骨及骨肿瘤组织微阵列芯片及其制备方法 |
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