JPWO2018194156A1 - 半導体装置及びその製造方法 - Google Patents
半導体装置及びその製造方法 Download PDFInfo
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- JPWO2018194156A1 JPWO2018194156A1 JP2019513700A JP2019513700A JPWO2018194156A1 JP WO2018194156 A1 JPWO2018194156 A1 JP WO2018194156A1 JP 2019513700 A JP2019513700 A JP 2019513700A JP 2019513700 A JP2019513700 A JP 2019513700A JP WO2018194156 A1 JPWO2018194156 A1 JP WO2018194156A1
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- 239000011787 zinc oxide Substances 0.000 description 1
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Abstract
Description
図1、図2及び図3は、それぞれ、後述する実施形態に係る方法によって製造され得る半導体装置の一実施形態を示す断面図である。
半導体装置の製造方法の一実施形態は、接続部を有する第一の部材と接続部を有する第二の部材とを、接着剤を介して、第一の部材の接続部の融点及び第二の部材の接続部の融点よりも低い温度で仮圧着することによって、第一の部材の接続部と第二の部材の接続部とが対向配置されている仮圧着体を得る第一工程(仮圧着工程)と、仮圧着体を、気圧によって加圧しながら、対向配置された接続部の融点以上の温度に加熱し、それによって対向配置された接続部同士を電気的に接続されるように接合する第二工程(本圧着工程)と、を含む。第一の部材は、半導体チップ又は半導体ウエハであり、第二の部材は、配線回路基板、半導体チップ又は半導体ウエハである。
以下、上述の半導体装置の製造方法で用いることのできる接着剤(半導体接着剤)について説明する。
熱硬化性樹脂は、重量平均分子量10000未満であることが好ましい。重量平均分子量10000未満の熱硬化性樹脂が硬化剤と反応することで、接着剤の硬化性が向上する。また、ボイドの抑制、及び耐熱性の観点からも好ましい。
硬化剤としては、例えば、フェノール樹脂系硬化剤、酸無水物系硬化剤、アミン系硬化剤、イミダゾール系硬化剤、ホスフィン系硬化剤、アゾ化合物、及び有機過酸化物が挙げられる。これらの中でも、イミダゾール系硬化剤が好ましい。
重量平均分子量10000以上の高分子成分は、エポキシ樹脂、フェノキシ樹脂、ポリイミド樹脂、ポリアミド樹脂、ポリカルボジイミド樹脂、シアネートエステル樹脂、アクリル樹脂、ポリエステル樹脂、ポリエチレン樹脂、ポリエーテルスルホン樹脂、ポリエーテルイミド樹脂、ポリビニルアセタール樹脂、ウレタン樹脂、アクリルゴム等が挙げられ、その中でも耐熱性およびフィルム形成性に優れるエポキシ樹脂、フェノキシ樹脂、ポリイミド樹脂、アクリル樹脂、アクリルゴム、シアネートエステル樹脂、ポリカルボジイミド樹脂等が好ましく、さらに耐熱性、フィルム形成性に優れるエポキシ樹脂、フェノキシ樹脂、ポリイミド樹脂、アクリル樹脂、アクリルゴムがより好ましい。これらの高分子成分は単独又は2種以上の混合体又は共重合体として用いることもできる。重量平均分子量10000以上の高分子成分は、硬化剤と反応する熱硬化性樹脂であってもよい。
表1に示す組成を有するフィルム状接着剤を作製した。
(i)熱硬化性樹脂(重量平均分子量(Mw)が10000未満)
エポキシ樹脂
EP1032H60:トリフェノールメタン骨格含有多官能固形エポキシ樹脂(三菱化学株式会社製、重量平均分子量:800〜2000)
YL983U:ビスフェノールF型液状エポキシ樹脂(三菱化学株式会社製、分子量:約336)
YL7175−1000:可とう性半固形状エポキシ樹脂(三菱化学株式会社製、重量平均分子量:1000〜5000)
(ii)硬化剤
2MAOK−PW: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体(四国化成株式会社製)
(iii)重量平均分子量(Mw)10000以上の高分子成分
ZX1356−2:フェノキシ樹脂(東都化成株式会社、ガラス転移温度:約71℃、重量平均分子量:約63000)
(iv)フラックス剤(カルボン酸)
2−メチルグルタル酸(アルドリッチ社製、融点:約77℃)
(v)フィラ
無機フィラ
SE2050:シリカフィラ(株式会社アドマテックス製、平均粒径0.5μm)
YA050C−SP:フェニル表面処理ナノシリカフィラ(株式会社アドマテックス、平均粒径:約50nm)
樹脂フィラ
EXL−2655:有機フィラ(ロームアンドハースジャパン株式会社製、コアシェルタイプ有機微粒子)
(vi)添加材
FCA107:固形シラノール(東レダウコーニング株式会社製、重量平均分子量:約3000)
(仮圧着工程)
上記で作製したフィルム状接着剤を8mm四方、厚さ0.045mmのサイズに切り抜き、これを半導体チップ(10mm、厚さ0.1mm厚、接続部金属:Au、製品名:WALTS−TEG IP80、株式会社ウォルツ製)上に貼付した。そこに、はんだバンプ付き半導体チップ(チップサイズ:7.3mm×7.3mm、厚さ0.05mm、バンプ(接続部)高さ:約45μm(銅ピラーとはんだの合計)、バンプ数:1048ピン、ピッチ80μm、製品名:WALTS−TEG CC80、株式会社ウォルツ製)を、フリップチップボンダー(FCB3、パナソニック株式会社製)で加熱及び加圧することにより仮圧着した。仮圧着の条件は、130℃、75N、2秒とした。
仮圧着後の積層体(仮圧着体)を以下の条件で加熱及び加圧することにより、半導体チップの接続部同士を接合して接続評価用のサンプルを作製した。
(実施例1)
・装置:加圧式リフロ装置(VSU28、株式会社シンアペックス製)
・加熱温度/時間:170℃/5分、260℃/5分の順で加熱
・圧力:0.4MPa(気圧)
(実施例2)
・装置:加圧式リフロ装置(VSU28、株式会社シンアペックス製)
・加熱温度/時間:260度/5分
・圧力:0.4MPa(気圧)
(比較例1)
・装置:オーブン(DKN402、ヤマト科学株式会社製)
・加熱温度/時間:170度/5分、260度/5分の順で加熱
・圧力:大気圧
(比較例2)
・装置:オーブン(DKN402、ヤマト科学株式会社製)
・加熱温度/時間:260度/5分
・圧力:大気圧
本圧着後の上記サンプルに関して、マルチメータ(R6871E、株式会社エーディーシー製)を用いて初期導通の可否を測定した。ペリフェラル部分の内周の初期接続抵抗値が45Ω以下、外周の初期接続抵抗値が85Ω以下であるサンプルを「A」、それよりも高い抵抗値又は未接続のサンプルを「B」とした。
本圧着後の上記サンプルの外観画像を、超音波映像診断装置(Insight−300、インサイト株式会社製)によって撮影した。得られた画像から、スキャナ(GT−9300UF、セイコーエプソン株式会社製)でチップ間の接着剤層の画像を取り込んだ。取り込んだ画像において、画像処理ソフト(Adobe Photoshop(商品名))を用いて、色調補正、二階調化によりボイド部分を識別し、ヒストグラムによりボイド部分の占める割合を算出した。ボイド部分を含む接着層全体の面積を100面積%とした。ボイドの面積割合が5%以下を「A」とし、ボイドの面積割合が55%より多い場合を「B」とした。表2に評価結果を示す。
Claims (6)
- 接続部を有する第一の部材と接続部を有する第二の部材とを、接着剤を介して、前記第一の部材の接続部の融点及び前記第二の部材の接続部の融点よりも低い温度で仮圧着することによって、前記第一の部材の接続部と前記第二の部材の接続部とが対向配置されている仮圧着体を得る工程と、
前記仮圧着体を、気圧によって加圧しながら、前記第一の部材の接続部又は前記第二の部材の接続部のうち少なくとも一方の融点以上の温度に加熱し、それによって対向配置された前記接続部同士を電気的に接続されるように接合する工程と、
を備え、
前記第一の部材が半導体チップ又は半導体ウエハで、前記第二の部材が配線回路基板、半導体チップ又は半導体ウエハである、
半導体装置の製造方法。 - 前記接着剤が、重量平均分子量10000未満の熱硬化性樹脂、及びその硬化剤を含有する、請求項1に記載の半導体装置の製造方法。
- 前記接着剤が、重量平均分子量10000以上の高分子成分を更に含有する、請求項2に記載の半導体装置の製造方法。
- 前記高分子成分の重量平均分子量が30000以上で、前記高分子成分のガラス転移温度が100℃以下である、請求項3に記載の半導体装置の製造方法。
- 前記接着剤がフィルム状接着剤である、請求項1〜4のいずれか一項に記載の半導体装置の製造方法。
- 請求項1〜5のいずれか一項に記載の製造方法によって得られる、半導体装置。
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JP2004273809A (ja) * | 2003-03-10 | 2004-09-30 | Sumitomo Bakelite Co Ltd | 接着フィルムおよびこれを用いた半導体パッケージならびに半導体装置 |
JP2009010057A (ja) * | 2007-06-27 | 2009-01-15 | Toray Ind Inc | 電子素子の実装方法 |
JP2009194054A (ja) * | 2008-02-13 | 2009-08-27 | Toray Ind Inc | 半導体用接着組成物およびそれを用いた半導体装置の製造方法 |
JP2012074636A (ja) * | 2010-09-29 | 2012-04-12 | Sumitomo Bakelite Co Ltd | 接合方法、半導体装置、多層回路基板および電子部品 |
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JP2017045891A (ja) * | 2015-08-27 | 2017-03-02 | 日立化成株式会社 | 半導体装置及びそれを製造する方法 |
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JP5217260B2 (ja) | 2007-04-27 | 2013-06-19 | 住友ベークライト株式会社 | 半導体ウエハーの接合方法および半導体装置の製造方法 |
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JP5867259B2 (ja) * | 2012-04-17 | 2016-02-24 | 住友ベークライト株式会社 | 積層体の製造方法 |
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2018
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JP2004273809A (ja) * | 2003-03-10 | 2004-09-30 | Sumitomo Bakelite Co Ltd | 接着フィルムおよびこれを用いた半導体パッケージならびに半導体装置 |
JP2009010057A (ja) * | 2007-06-27 | 2009-01-15 | Toray Ind Inc | 電子素子の実装方法 |
JP2009194054A (ja) * | 2008-02-13 | 2009-08-27 | Toray Ind Inc | 半導体用接着組成物およびそれを用いた半導体装置の製造方法 |
JP2012074636A (ja) * | 2010-09-29 | 2012-04-12 | Sumitomo Bakelite Co Ltd | 接合方法、半導体装置、多層回路基板および電子部品 |
JP2012089740A (ja) * | 2010-10-21 | 2012-05-10 | Fujitsu Ltd | 半導体装置の製造方法及び接合方法 |
JP2013144793A (ja) * | 2011-12-16 | 2013-07-25 | Hitachi Chemical Co Ltd | 接着剤組成物、フィルム状接着剤、接着シート、接続構造体、及び、接続構造体の製造方法 |
JP2013239469A (ja) * | 2012-04-17 | 2013-11-28 | Sumitomo Bakelite Co Ltd | 積層体の製造方法 |
JP2017045891A (ja) * | 2015-08-27 | 2017-03-02 | 日立化成株式会社 | 半導体装置及びそれを製造する方法 |
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CN110582840A (zh) | 2019-12-17 |
TW201843751A (zh) | 2018-12-16 |
KR20230133407A (ko) | 2023-09-19 |
WO2018194156A1 (ja) | 2018-10-25 |
KR20190142333A (ko) | 2019-12-26 |
JP2024023787A (ja) | 2024-02-21 |
TWI799412B (zh) | 2023-04-21 |
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