JP2023182606A - 半導体封止材および半導体装置 - Google Patents
半導体封止材および半導体装置 Download PDFInfo
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- 125000000040 m-tolyl group Chemical group [H]C1=C([H])C(*)=C([H])C(=C1[H])C([H])([H])[H] 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 125000005439 maleimidyl group Chemical class C1(C=CC(N1*)=O)=O 0.000 description 1
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- VYKXQOYUCMREIS-UHFFFAOYSA-N methylhexahydrophthalic anhydride Chemical compound C1CCCC2C(=O)OC(=O)C21C VYKXQOYUCMREIS-UHFFFAOYSA-N 0.000 description 1
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- PSHKMPUSSFXUIA-UHFFFAOYSA-N n,n-dimethylpyridin-2-amine Chemical compound CN(C)C1=CC=CC=N1 PSHKMPUSSFXUIA-UHFFFAOYSA-N 0.000 description 1
- VSWALKINGSNVAR-UHFFFAOYSA-N naphthalen-1-ol;phenol Chemical compound OC1=CC=CC=C1.C1=CC=C2C(O)=CC=CC2=C1 VSWALKINGSNVAR-UHFFFAOYSA-N 0.000 description 1
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- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
前記活性エステルは、式(1)で表される構造を有し、
Bは、式(B)で表される構造であり、
Aは、脂肪族環状炭化水素基を介して連結された置換または非置換のアリーレン基であり、
Ar’は、置換または非置換のアリール基であり、
kは、繰り返し単位の平均値であり、0.25~3.5の範囲である、半導体封止用樹脂組成物が提供される。
本実施形態の樹脂組成物は、半導体を封止するための封止材料として使用するための樹脂組成物であり、エポキシ樹脂と活性エステル樹脂とを含む。本実施形態において、活性エステル樹脂は、式(1)で表される構造を有する樹脂である。
Aは、脂肪族環状炭化水素基を介して連結された置換または非置換のアリーレン基であり、
Ar’は、置換または非置換のアリール基であり、
kは、繰り返し単位の平均値であり、0.25~3.5の範囲である。
R1はそれぞれ独立に水素原子、炭素原子数1~4のアルキル基、炭素原子数1~4のアルコキシ基、フェニル基、アラルキル基の何れかであり、
R2はそれぞれ独立に炭素原子数1~4のアルキル基、炭素原子数1~4のアルコキシ基、フェニル基の何れかであり、Xは炭素原子数2~6の直鎖のアルキレン基、エーテル結合、カルボニル基、カルボニルオキシ基、スルフィド基、スルホン基のいずれかであり、
n、pは1~4の整数である。
R3はそれぞれ独立に水素原子、炭素原子数1~4のアルキル基、炭素原子数1~4のアルコキシ基、フェニル基、アラルキル基の何れかであり、
lは0または1であり、mは1以上の整数である。
(活性エステル樹脂(1)の調製)
温度計、滴下ロート、冷却管、分留管、撹拌器を取り付けたフラスコに、ビフェニル-4,4’-ジカルボン酸ジクロライド279.1g(酸クロリド基のモル数:2.0モル)とトルエン1338gとを仕込み、系内を減圧窒素置換して溶解させた。次いで、α-ナフトール96.5g(0.67モル)、ジシクロペンタジエンフェノール樹脂を219.5g(フェノール性水酸基のモル数:1.33モル)を仕込み、系内を減圧窒素置換して溶解させた。その後、窒素ガスパージを施しながら、系内を60℃以下に制御して、20%水酸化ナトリウム水溶液400gを3時間かけて滴下した。次いでこの条件下で1.0時間撹拌を続けた。反応終了後、静置分液し、水層を取り除いた。更に反応物が溶解しているトルエン相に水を投入して約15分間撹拌混合し、静置分液して水層を取り除いた。水層のpHが7になるまでこの操作を繰り返した。その後、デカンタ脱水で水分を除去し不揮発分65%のトルエン溶液状態にある活性エステル樹脂(1)を得た。この不揮発分65質量%のトルエン溶液の溶液粘度は5540mPa・S(25℃)であった。また、これを乾燥して得た活性エステル樹脂の固形分の軟化点は138℃であった。
下記、表1記載の配合に従い、エポキシ樹脂として、DIC製HP-7200H(ジシクロペンタジエンフェノール型エポキシ樹脂、150℃における溶融粘度0.30ポイズ、エポキシ基当量277g/当量)、硬化剤として、上記で得られた活性エステル樹脂(1)を配合し、更に、硬化触媒としてジメチルアミノピリジン0.5phrとなる量を加え、最終的に各組成物の不揮発分(N.V.)が58質量%となるようにメチルエチルケトンを配合して調整した。得られた樹脂組成物のスパイラルフローを、以下の方法により作製した。
<スパイラルフローの測定>
EMMI-I-66に準じたスパイラルフロー測定用の金型を用い、金型温度175℃、注入圧力6.8MPa、硬化時間2分で測定した結果、120cmであった。
<誘電特性の測定>
次いで、得られた樹脂組成物を、金型温度175℃、注入圧力10MPa、硬化時間2分間で成型し、直径50mm、厚さ3mmの円盤を作製した。得られた硬化物について、JIS-C-6481に準拠し、アジレント・テクノロジー株式会社製インピーダンス・マテリアル・アナライザ「HP4291B」により、絶乾後23℃、湿度50%の室内に24時間保管した後の試験片の1GHzでの誘電率および誘電正接を測定した。結果を表1に示す。
各金属(Ag,Cu,Ni)に対する密着性を以下の方法で評価した。各種金属(銀、銅、ニッケル)からなる基板上に、上記で得られた樹脂組成物を175℃、6.9MPa、2分間の条件で成型し4時間ポストキュアーを行った。その後、各基板との剪断密着性を室温で測定した。結果を表1に示す。
2 ダイボンド材硬化体
3 ダイパッド
4 金線
5 リードフレーム
6 封止材(封止用樹脂組成物の硬化体)
トランスファー成形法または圧縮成形法による半導体の封止に用いられる半導体封止材であって、
当該半導体封止材は、タブレットまたは粉砕物の形態であり、
当該半導体封止材は、半導体封止用樹脂組成物からなり、
前記半導体封止用樹脂組成物は、エポキシ樹脂と、活性エステル樹脂と、を含む、半導体封止材が提供される。
基板と、
前記基板上に搭載された半導体素子と、
前記半導体素子を封止する封止材と、を備え、
前記封止材が、上記半導体封止材の硬化物からなる、半導体装置が提供される。
Claims (9)
- 硬化剤をさらに含む、請求項1~3のいずれかに記載の半導体封止用樹脂組成物。
- 前記活性エステル樹脂が、当該封止樹脂組成物の固形分全体に対して、1質量%以上15質量%以下の量である、請求項1~4のいずれかに記載の半導体封止用樹脂組成物。
- 前記硬化剤が、前記活性エステル樹脂に対して、1質量%以上40質量%以下の量である、請求項4に記載の半導体封止用樹脂組成物。
- 前記活性エステル樹脂が、200g/eq以上230g/eq以下のエステル基当量を有する、請求項1~6のいずれかに記載の半導体封止用樹脂組成物。
- 無機充填剤をさらに含む、請求項1~7のいずれかに記載の半導体封止用樹脂組成物。
- 基板と、
前記基板上に搭載された半導体素子と、
前記半導体素子を封止する封止材と、を備え、
前記封止材が、請求項1~8のいずれかに記載の半導体封止用樹脂組成物の硬化物からなる、半導体装置。
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