JP5454018B2 - フィルム状接着剤、接着シート及び半導体装置 - Google Patents
フィルム状接着剤、接着シート及び半導体装置 Download PDFInfo
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- JP5454018B2 JP5454018B2 JP2009201932A JP2009201932A JP5454018B2 JP 5454018 B2 JP5454018 B2 JP 5454018B2 JP 2009201932 A JP2009201932 A JP 2009201932A JP 2009201932 A JP2009201932 A JP 2009201932A JP 5454018 B2 JP5454018 B2 JP 5454018B2
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- copper ion
- copper
- adsorption layer
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- H01L24/00—Arrangements for connecting or disconnecting semiconductor or solid-state bodies; Methods or apparatus related thereto
- H01L24/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
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- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
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- H01L2224/83—Methods for connecting semiconductor or other solid state bodies using means for bonding being attached to, or being formed on, the surface to be connected using a layer connector
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- H01L2924/153—Connection portion
- H01L2924/1531—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface
- H01L2924/15311—Connection portion the connection portion being formed only on the surface of the substrate opposite to the die mounting surface being a ball array, e.g. BGA
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/151—Die mounting substrate
- H01L2924/156—Material
- H01L2924/157—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof
- H01L2924/15738—Material with a principal constituent of the material being a metal or a metalloid, e.g. boron [B], silicon [Si], germanium [Ge], arsenic [As], antimony [Sb], tellurium [Te] and polonium [Po], and alloys thereof the principal constituent melting at a temperature of greater than or equal to 950 C and less than 1550 C
- H01L2924/15747—Copper [Cu] as principal constituent
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- Adhesives Or Adhesive Processes (AREA)
- Die Bonding (AREA)
Description
銅イオン捕捉率(%)={(2.0−B)/2.0}×100
表1又は表2に示す品名及び組成比(単位:質量部)のエポキシ樹脂、フェノール樹脂及びフィラーからなる組成物にシクロヘキサノンを加え、撹拌混合した。これに、表1又は表2に同様に示すアクリルゴムを加えて撹拌し、更に表1又は表2に同様に示すカップリング剤及び硬化促進剤を加えて各成分が均一になるまで撹拌してワニスを得た。
YDF−8170C:(東都化成株式会社製商品名、ビスフェノールF型エポキシ樹脂、エポキシ当量159)。
YDCN−700−10:(東都化成株式会社製商品名、クレゾールノボラック型エポキシ樹脂、エポキシ当量210)。
フェノライトLF−4871:(大日本インキ株式会社製商品名、銅イオンと錯形成し得る骨格を有しない下記式(1)で表されるフェノール樹脂、水酸基当量118)。
ミレックスXLC−LL:(三井化学株式会社製商品名、銅イオンと錯形成し得る骨格を有しない下記式(2)で表されるフェノール樹脂、水酸基当量175)。
フェノライトLA−7054:(大日本インキ株式会社製商品名、銅イオンと錯形成し得るメラミン骨格を有する下記式(3)で表されるフェノール樹脂、水酸基当量125、メラミン骨格の含有量18質量%)。
SC2050−HLG:(アドマテックス株式会社製商品名、シリカフィラー分散液、平均粒径0.500μm)。
アエロジルR972:(日本アエロジル株式会社製商品名、シリカ、平均粒径0.016μm)。
アクリルゴムHTR−860P:(帝国化学産業株式会社製商品名、重量平均分子量80万、グリシジル官能基の含有量3質量%)。
NUC A−1160:(GE東芝株式会社製商品名、γ−ウレイドプロピルトリエトキシシラン)。
NUC A−189:(GE東芝株式会社製商品名、γ−メルカプトプロピルトリメトキシシラン)。
キュアゾール2PZ−CN:(四国化成工業株式会社製商品名、1−シアノエチル−2−フェニルイミダゾール)。
銅イオン吸着層の銅イオン捕捉率は以下の手順で測定した。まず、銅イオン吸着層を170℃、3時間の条件で硬化させた。厚み40μmの銅イオン吸着層の硬化物を1cm角に切り、耐圧・耐熱性の密閉可能なテフロン(登録商標)容器に測り取った。ここに質量比で上記硬化物の10倍量の2.0ppm酢酸銅水溶液を加え、容器を密閉した後、PCT装置(プレッシャークッカー、HIRAYAMA社製)で121℃、2atmの条件で24時間加熱した。その後、上記硬化物をろ別し、得られたろ液の銅イオン濃度をICP分析(誘導結合プラズマ発光分光分析装置、エスアイアイ・ナノテクノロジー社製、商品名:SPS5100)により算出し、それを残存銅イオン濃度B(ppm)とした。残存銅イオン濃度Bの値から、銅イオン捕捉率を以下の計算式により算出した。結果を表3に示す。
銅イオン捕捉率(%)={(2.0−B)/2.0}×100
銅イオン吸着層のダイシェア強度(接着強度)を下記の方法により測定した。まず、接着シートの銅イオン吸着層を厚み400μmの半導体ウェハに70℃で貼り付けた。次に、それらを5mm角にダイシングしてチップを得た。個片化したチップの銅イオン吸着層側を銅製のリードフレーム上に、120℃、250gf/cm2、5秒間の条件で熱圧着してサンプルを得た。その後、得られたサンプルの銅イオン吸着層を110℃で1時間、120℃で1時間の順で加熱し、続いて封止工程相当の熱処理を175℃、6.7MPaで30秒間加えた。その後、170℃で3時間加熱することで銅イオン吸着層を硬化させた。更に、銅イオン吸着層硬化後のサンプルを85℃、60%RHの条件下で、168時間放置した。放置後、即座に265℃でダイシェア強度を測定し、これを接着強度とした。結果を表3に示す。
電気的不具合発生の有無を下記の方法により確認した。まず、接着シートの銅イオン吸着層を厚み400μmの半導体ウェハに70℃で貼り付けた。次に、それらを5mm×10mmにダイシングしてチップを得た。一方、図7に示すように、ポリイミド基板14の表面に銅製のくし型電極パターン15が設けられた基板21を準備した。なお、くし型電極パターン15は、プラス電極15aとマイナス電極15bとで構成され、ライン幅/スペース幅が30μm/70μmとなるように形成されている。
Claims (6)
- 半導体素子と、該半導体素子を搭載する支持部材とを接着するためのフィルム状接着剤であって、
銅イオンと錯形成し得る骨格を有する樹脂を含有する銅イオン吸着層を備え、
前記銅イオンと錯形成し得る骨格を有する樹脂が、トリアジン骨格を有するフェノール樹脂である、フィルム状接着剤。 - 前記銅イオン吸着層が、(a)熱硬化性成分、(b)高分子量成分、及び、(c)フィラーを含有し、且つ、前記(a)熱硬化性成分として、前記銅イオンと錯形成し得る骨格を有する樹脂を含有し、前記(b)高分子量成分がアクリルゴムである、請求項1記載のフィルム状接着剤。
- 前記銅イオン吸着層は、その硬化物を質量比で10倍となる2.0ppmの銅イオン水に浸して121℃、2atmで24時間加熱した場合に、銅イオンを1.0ppm以上吸着し得るものである、請求項1又は2記載のフィルム状接着剤。
- 支持基材と、該支持基材の一方の面上に設けられた請求項1〜3のいずれか一項に記載のフィルム状接着剤と、を備える接着シート。
- 半導体素子と、該半導体素子を搭載する支持部材と、前記半導体素子及び前記支持部材間に設けられ、前記半導体素子及び前記支持部材を接着する接着部材と、を備える半導体装置であって、
前記接着部材が、請求項1〜3のいずれか一項に記載のフィルム状接着剤の硬化物である、半導体装置。 - 前記支持部材が、銅を素材として含むものである、請求項5記載の半導体装置。
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JP2012241063A (ja) * | 2011-05-17 | 2012-12-10 | Nitto Denko Corp | 半導体装置製造用の接着シート |
JP2012241157A (ja) * | 2011-05-23 | 2012-12-10 | Nitto Denko Corp | 半導体装置製造用の接着剤組成物、及び、半導体装置製造用の接着シート |
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JP6148430B2 (ja) * | 2011-07-26 | 2017-06-14 | 日東電工株式会社 | 接着シート及びその用途 |
JP5814029B2 (ja) * | 2011-07-26 | 2015-11-17 | 日東電工株式会社 | 半導体装置製造用の接着シート、及び、半導体装置製造用の接着シートを有する半導体装置 |
JP2013028679A (ja) * | 2011-07-27 | 2013-02-07 | Nitto Denko Corp | 半導体装置製造用の接着シート、ダイシングフィルム一体型半導体装置製造用の接着シート、及び、当該半導体装置製造用の接着シートを有する半導体装置 |
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