JP4441335B2 - 半導体装置製造用の接着シート、これを用いた半導体装置の製造方法及びそれにより得られる半導体装置 - Google Patents
半導体装置製造用の接着シート、これを用いた半導体装置の製造方法及びそれにより得られる半導体装置 Download PDFInfo
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- JP4441335B2 JP4441335B2 JP2004172064A JP2004172064A JP4441335B2 JP 4441335 B2 JP4441335 B2 JP 4441335B2 JP 2004172064 A JP2004172064 A JP 2004172064A JP 2004172064 A JP2004172064 A JP 2004172064A JP 4441335 B2 JP4441335 B2 JP 4441335B2
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- adhesive sheet
- semiconductor device
- manufacturing
- semiconductor element
- resin
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Description
即ち、本発明によれば、接着シートを用いて半導体素子と被着体とを貼り合わせた場合に於いて、シワ、異物の混入または気泡等の発生があった場合にも、接着シートを半導体素子及び被着体から剥離することにより、半導体素子等が廃棄されるのを防止できる。これにより、生産コストの抑制が可能となり、歩留まりの向上が図れるという効果を奏する。
本発明に係る半導体装置製造用の接着シートについて、図1を参照しながら説明する。図1は本実施の形態に係る接着シートを概略的に示す断面図であって、同図(a)は接着剤層のみからなる場合を示し、同図(b)はコア材料上に接着剤層が設けられた場合を示す。
次いで、本発明に係る半導体装置の製造方法について、図2を参照しながら説明する。図2は、本実施の形態に係る半導体装置の製造方法を製造する為の工程図である。
以上の説明に於いては、本発明の最も好適な実施態様について説明した。しかし、本発明は当該実施態様に限定されるものではなく、本発明の特許請求の範囲に記載された技術的思想と実質的に同一の範囲で種々の変更が可能である。
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部に対して、多官能イソシアネート系架橋剤3部、エポキシ樹脂(ジャパンエポキシレジン(株)製、エピコート1004)23部、フェノール樹脂(三井化学(株)製、ミレックスXLC−LL)6部をメチルエチルケトンに溶解させ、濃度20重量%の接着剤組成物の溶液を調製した。
本実施例2に於いては、前記実施例1で使用したアクリル酸エステル系ポリマーに代えて、ブチルアクリレートを主成分としたポリマー(根上工業(株)製、パラクロンSN−710)を用いた以外は、前記実施例1と同様にして、本実施例2に係る接着シートを作製した。尚、接着剤層の厚さは25μmとした。
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)30部に対して、エポキシ樹脂(日本化薬(株)製、EPPN−501NY)27部、フェノール樹脂(三井化学(株)製、ミレックスXLC−LL)29部、硬化促進剤(北興化学(株)製、トリフェニルホスフィン)2部をメチルエチルケトンに溶解して、濃度20重量%の接着剤組成物の溶液を調製した。
本比較例2に於いては、前記比較例1にて使用したアクリル酸エステル系ポリマーに代えて、ブチルアクリレートを主成分としたポリマー(根上工業(株)製、パラクロンSN−710)を用いた以外は、前記比較例1と同様にして、本比較例2に係る接着シートを作製した。尚、接着剤層の厚さは25μmとした。
前記実施例及び比較例に於いて作製した接着シートについて、シリコンウェハに対する接着力を以下の通り測定した。
102 コア材料
103 接着剤層
104 接着シート
201 回路基板(被着体)
202 半導体素子
203 ボンディングワイヤー
204 封止樹脂
301 第1接着シート
302 第1半導体素子
303 第2接着シート
304 第2半導体素子
Claims (9)
- 半導体素子を被着体に接着させ、該半導体素子にワイヤーボンディングをする際に用いる半導体装置製造用の接着シートであって、
エポキシ樹脂、フェノール樹脂及びアクリル樹脂を含み構成され、かつ前記エポキシ樹脂及びフェノール樹脂の重量に対するアクリル樹脂の重量比が50%より大きく、シリコンウェハに対する180度ピール接着力が5(N/25mm)以下の剥離型接着シートであることを特徴とする半導体装置製造用の接着シート。 - 請求項1に記載の半導体装置製造用の接着シートであって、
前記接着シートには架橋剤が添加されていることを特徴とする半導体装置製造用の接着シート。 - 請求項2に記載の半導体装置製造用の接着シートであって、
前記架橋剤がポリイソシアネート化合物であることを特徴とする半導体装置製造用の接着シート。 - 請求項3に記載の半導体装置製造用の接着シートであって、
前記ポリイソシアネート化合物の添加量は、前記アクリル樹脂100重量部に対し0.05重量部〜7重量部であることを特徴とする半導体装置製造用の接着シート。 - 請求項1〜4の何れか1項に記載の半導体装置製造用の接着シートであって、
前記接着シートには硬化促進剤が添加されていないことを特徴とする半導体装置製造用の接着シート。 - 請求項1〜5の何れか1項に記載の半導体装置製造用の接着シートを介して半導体素子を被着体上に固着する工程と、
前記半導体素子にワイヤーボンディングをする工程と、
前記半導体素子を封止樹脂により樹脂封止する工程とを含み、
前記固着の工程に於いて不具合が生じた場合には、前記半導体素子を接着シートから剥離し、他の接着シートを用いて前記固着の工程を繰り返すことを特徴とする半導体装置の製造方法。 - 請求項6に記載の半導体装置の製造方法であって、
前記固着の工程は、70℃以下で行うことを特徴とする半導体装置の製造方法。 - 請求項7に記載の半導体装置の製造方法であって、
前記半導体素子を接着シートから剥離する際の温度は、前記固着の工程の際の温度よりも低いことを特徴とする半導体装置の製造方法。 - 請求項6〜8の何れか1項に記載の半導体装置の製造方法により得られた半導体装置。
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