JP4732472B2 - 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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Description
即ち、本発明の熱硬化型ダイボンドフィルムによれば、熱可塑性樹脂成分5〜15重量%と熱硬化性樹脂成分45〜55重量%とを主成分として含有し、熱硬化前の100℃に於ける溶融粘度を400Pa・s以上2500Pa・s以下にすることにより、被着体に対する密着性を向上させてボイドの発生を防止すると共に、接着剤成分の滲み出しを抑制して半導体チップ等の汚染を防止する。その結果、信頼性の高い半導体装置を歩留まり良く製造すること可能になる。
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」と言う)について以下に説明する。
次に、本実施の形態に係るダイボンドフィルムを用いた半導体装置の製造方法について説明する。図1はダイボンドフィルムを介して半導体素子を実装した例を示す断面模式図である。
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。
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、エポキシ樹脂1(JER(株)製、エピコート1004)228重量部、エポキシ樹脂2(JER(株)製、エピコート827)206重量部、フェノール樹脂(三井化学(株)製、レミックスXLC−4L)466重量部、平均粒径0.5μmの球状シリカ(アドマテックス(株)製、SO−25R)667重量部、硬化触媒(四国化成(株)製、C11−Z)3部をメチルエチルケトンに溶解させ、濃度23.6重量%の接着剤組成物を調製した。
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,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)144部、エポキシ樹脂2(JER(株)製、エピコート827)130部、フェノール樹脂(三井化学(株)製、ミレックスXLC−4L)293部、球状シリカ(アドマテックス(株)製、SO−25R)444部、硬化触媒(四国化成(株)製、C11−Z)2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,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)482部、エポキシ樹脂2(JER(株)製、エピコート827)436部、フェノール樹脂(三井化学(株)製、ミレックスXLC−4L)983部、球状シリカ(アドマテックス(株)製、SO−25R)1333部、硬化触媒(四国化成(株)製、C11−Z)6部をメチルエチルケトンに溶解させ、濃度23.6重量%の接着剤組成物を調製した。
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,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)59部、エポキシ樹脂2(JER(株)製、エピコート827)53部、フェノール樹脂(三井化学(株)製、ミレックスXLC−4L)121部、球状シリカ(アドマテックス(株)製、SO−25R)222部、硬化触媒(四国化成(株)製、C11−Z)1部をメチルエチルケトンに溶解させ、濃度23.6重量%の接着剤組成物を調製した。
各実施例及び比較例のダイボンドフィルムA〜Fの熱硬化前の100℃に於ける溶融粘度を測定した。測定にはレオメーター(HAAKE社製、RS−1)を用いて、パラレルプレート法により行った。即ち、各ダイボンドフィルムA〜Fから0.1gを採取して試料とし、この試料を予め100℃に熱してあるプレートに仕込んだ。溶融粘度は測定開始から300秒後の値とした。また、プレート間のギャップは0.1mmとした。結果を下記表1及び表2に示す。
各実施例及び比較例のダイボンドフィルムA〜Fを、それぞれ40℃で半導体素子に貼り付け、160℃、0.2MPa、2sでBGA基板にマウントした。次に、175℃で、1時間加熱し各ダイボンドフィルムA〜Fを熱硬化させた。
各実施例及び比較例のダイボンドフィルムA〜Fを、40℃で半導体素子に貼り付け、160℃、0.2MPa、2sでBGA基板にマウントした。このときの接着剤の滲み出し量を光学顕微鏡を用いて測定した。結果を下記表1及び表2に示す。
得られたダイボンドフィルムA〜Fについて熱硬化後の吸水率を、85℃、85%RHの恒温恒湿槽に168時間放置した前後の重量減少率から測定した。
得られたダイボンドフィルムA〜Fについて熱硬化後の重量減少量を、乾燥機を用いて210℃で1時間放置した前後の重量減少量から測定した。
得られたダイボンドフィルムA〜Fについて熱硬化後の引張貯蔵弾性率を、粘弾性測定装置(Rheometic Scientific社製、Solid Analyzer RSII)を用いて昇温速度10℃/分、周波数1MHzに於いて測定した。
下記表1及び表2から分かる通り、比較例1のダイボンドフィルムEの様に、溶融粘度が300Pa・sであると、接着剤の滲み出し量165μmと多いことが確認された。また、比較例2のダイボンドフィルムFの様に溶融粘度が3500Pa・sであると、パッケージ後のボイド面積が8.9vol%と大きくなった。
5 半導体チップ(半導体素子)
6 基板等(被着体)
7 ボンディングワイヤー
8 封止樹脂
9 スペーサ
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(半導体素子)
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 (2)
- 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、
熱可塑性樹脂成分5〜15重量%及び熱硬化性樹脂成分45〜55重量%を主成分として含有し、
有機樹脂成分100重量部に対し10重量部以上80重量部以下の無機充填材を含み、
熱硬化前の100℃に於ける溶融粘度が400Pa・s以上800Pa・s以下であり、
前記加熱による熱硬化後の、250℃、1時間加熱後の重量減少量が1重量%以下であり、
前記ダイボンドフィルムの熱硬化後の250℃での引張貯蔵弾性率が10MPa以上であり、
前記加熱による熱硬化後の、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%以下であることを特徴とする熱硬化型ダイボンドフィルム。 - 請求項1に記載の熱硬化型ダイボンドフィルムが、粘着フィルム上に積層されていることを特徴とするダイシング・ダイボンドフィルム。
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| JPWO2015098949A1 (ja) * | 2013-12-26 | 2017-03-23 | 日立化成株式会社 | 仮固定用フィルム、仮固定用フィルムシート及び半導体装置 |
| US10550295B2 (en) | 2013-12-26 | 2020-02-04 | Hitachi Chemical Company, Ltd. | Film for temporary fixing, film sheet for temporary fixing and semiconductor device |
| KR20200026833A (ko) | 2017-07-06 | 2020-03-11 | 린텍 가부시키가이샤 | 수지막 형성용 필름 및 수지막 형성용 복합 시트 |
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| KR100941832B1 (ko) | 2010-02-11 |
| CN102391809A (zh) | 2012-03-28 |
| TW200901397A (en) | 2009-01-01 |
| KR20080080458A (ko) | 2008-09-04 |
| TWI387066B (zh) | 2013-02-21 |
| US20080213943A1 (en) | 2008-09-04 |
| KR20090132570A (ko) | 2009-12-30 |
| US7611926B2 (en) | 2009-11-03 |
| CN101260223A (zh) | 2008-09-10 |
| JP2008244464A (ja) | 2008-10-09 |
| CN101260223B (zh) | 2012-04-18 |
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