JP4984501B2 - エポキシ樹脂組成物及び半導体装置 - Google Patents
エポキシ樹脂組成物及び半導体装置 Download PDFInfo
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- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- BIKXLKXABVUSMH-UHFFFAOYSA-N trizinc;diborate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]B([O-])[O-].[O-]B([O-])[O-] BIKXLKXABVUSMH-UHFFFAOYSA-N 0.000 description 1
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- XAEWLETZEZXLHR-UHFFFAOYSA-N zinc;dioxido(dioxo)molybdenum Chemical compound [Zn+2].[O-][Mo]([O-])(=O)=O XAEWLETZEZXLHR-UHFFFAOYSA-N 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
- Epoxy Resins (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
Description
[3] 前記活性アルミナ(C)が多孔質の活性アルミナである第[1]項又は第[2]項記載の半導体封止用エポキシ樹脂組成物、
[4] 前記活性アルミナ(C)の比表面積が30m2/g以上、400m2/g以下である第[1]項ないし第[3]項のいずれかに記載の半導体封止用エポキシ樹脂組成物、
[5] さらに硬化促進剤(D)を含むものである第[1]項ないし第[4]項のいずれかに記載の半導体封止用エポキシ樹脂組成物、
[6] さらに前記活性アルミナ(C)以外の無機充填材(E)を含むものである第[1]項ないし第[5]項のいずれかに記載の半導体封止用エポキシ樹脂組成物、
[7] 第[1]項ないし第[6]項のいずれかに記載のエポキシ樹脂組成物を混合及び/又は溶融混練してなる半導体封止用エポキシ樹脂成形材料、
[8] 第[7]項に記載の半導体封止用エポキシ樹脂成形材料を用いて半導体素子を封止してなることを特徴とする半導体装置、
である。
以下、本発明について詳細に説明する。
本発明に用いられる活性アルミナ(C)は、30m2/gを超える大きな比表面積をもつ多孔質の構造を持ち、この極めて大きな表面に無機イオン、水、低分子有機化合物を吸着することができるため、イオン捕捉剤として作用するものである。活性アルミナを添加することにより、エポキシ樹脂組成物の硬化物中のイオン性不純物が活性アルミナに吸着されるため、耐湿信頼性、高温保管性が向上する。イオン性不純物の吸着能、エポキシ樹脂組成物としての耐湿信頼性、高温保管性及び流動性のバランス等の観点から、上記のような活性アルミナのうち、平均比表面積が30m2/g以上、400m2/g以下である多孔質の活性アルミナがより好ましい。
前記活性アルミナ(C)を含めた全無機充填材の配合量としては、成形性と信頼性のバランスから、全エポキシ樹脂組成物中に70重量%以上、95重量%以下が好ましい。
なお、実施例、及び比較例で用いたエポキシ樹脂、フェノール樹脂の略号及び構造、イオン捕捉剤の内容を以下にまとめて示す。
(日本化薬(株)製、EOCN1020、軟化点55℃、エポキシ当量196)
(住友ベークライト(株)製、PR−HF−3、軟化点80℃、水酸基当量104)
イオン捕捉剤(IC−1):バイヤー法で製造された水酸化アルミニウムを焼成して製造された多孔質の活性アルミナ(平均粒径8.6μm、比表面積230m2/g、全Na2O量0.2重量%)
イオン捕捉剤(IC−2):水中放電法で製造された水酸化アルミニウムを焼成して製造された多孔質の活性アルミナ(平均粒径0.5μm、比表面積48m2/g、全Na2O量0.001重量%)
イオン捕捉剤(IC−3):バイヤー法で製造された水酸化アルミニウムを焼成して製造された多孔質の活性アルミナ(平均粒径20.5μm、比表面積260m2/g、全Na2O量0.4重量%)
イオン捕捉剤(IC−4):BiO1.0(OH)0.7(NO3)0.3 (Bi系無機化合物、東亞合成(株)製、IXE−500)
イオン捕捉剤(IC−5):ハイドロタルサイト系化合物(協和化学工業(株)製、DHT−4H)
エポキシ樹脂(E−1) 7.29重量部
フェノール樹脂(H−1) 5.41重量部
イオン捕捉剤(IC−1) 0.50重量部
トリフェニルホスフィン(以下、TPPという) 0.15重量部
溶融球状シリカ(平均粒径26.5μm) 85.00重量部
γ−グリシドキシプロピルトリメトキシシラン(以下、エポキシシランという)
0.20重量部
カーボンブラック 0.30重量部
カルナバワックス 0.40重量部
を常温でミキサーを用いて混合し、70〜100℃でロール混練し、冷却後粉砕してエポキシ樹脂成形材料を得た。得られたエポキシ樹脂成形材料を用いて以下の方法で評価した。結果を表1に示す。
表1、表2に従って配合し、実施例1と同様にしてエポキシ樹脂成形材料を得、実施例1と同様にして評価した。結果を表1、表2に示す。
Claims (8)
- 一般式(1)で示されるエポキシ樹脂(a1)を含むエポキシ樹脂(A)、一般式(2)で示されるフェノール樹脂(b1)を含む硬化剤(B)、及び活性アルミナ(C)を必須成分として含み、前記活性アルミナ(C)中の全Na2O量が0.3重量%以下であり、活性アルミナ(C)の配合量が全エポキシ樹脂組成物中に0.01重量%以上、0.5重量%以下であることを特徴とする半導体封止用エポキシ樹脂組成物。
- 前記活性アルミナ(C)が、バイヤー法又は水中放電法で製造された水酸化アルミニウムを、焼成して製造された活性アルミナである請求項1記載の半導体封止用エポキシ樹脂組成物。
- 前記活性アルミナ(C)が多孔質の活性アルミナである請求項1又は請求項2記載の半導体封止用エポキシ樹脂組成物。
- 前記活性アルミナ(C)の比表面積が30m2/g以上、400m2/g以下である請求項1ないし請求項3のいずれかに記載の半導体封止用エポキシ樹脂組成物。
- さらに硬化促進剤(D)を含むものである請求項1ないし請求項4のいずれかに記載の半導体封止用エポキシ樹脂組成物。
- さらに前記活性アルミナ(C)以外の無機充填材(E)を含むものである請求項1ないし請求項5のいずれかに記載の半導体封止用エポキシ樹脂組成物。
- 請求項1ないし請求項6のいずれかに記載のエポキシ樹脂組成物を混合及び/又は溶融混練してなる半導体封止用エポキシ樹脂成形材料。
- 請求項7に記載の半導体封止用エポキシ樹脂成形材料を用いて半導体素子を封止してなることを特徴とする半導体装置。
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