JP5151584B2 - 半導体装置及び半導体装置の製造方法 - Google Patents
半導体装置及び半導体装置の製造方法 Download PDFInfo
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Description
1.第1の実施の形態に係る半導体装置
図3に、半導体素子が配線基板にフリップチップ実装されてなる本発明の第1の実施の形態に係る半導体装置を示す。図3では、半導体素子と配線基板との接合箇所を拡大して示している。
図3に示す半導体装置30を形成するにあたり、先ず、周知の半導体製造プロセスをもって形成され、主面に例えば、アルミニューム(Al)、銅(Cu)、及びこれらの合金等をもって形成された外部接続用端子パッド35が設けられた半導体素子34を用意する。そして、図4(a)に示すように、所謂ボールボンディング法によって、スタッドバンプボンダーを用いて、半導体素子34の主面に形成された外部接続用端子パッド35上に、凸状電極33を圧接固着・接続する。凸状電極33は、台座部33a及び当該台座部33a上に突出する突出部3bからなる。
上述の本発明の第1の実施の形態では、基板電極32が配設された配線基板31の主面に、例えば金(Au)からなる凸状(突起状)電極(スタッドバンプ)33を介して、半導体素子34がフリップチップ実装されている。
図8に、半導体素子が配線基板にフリップチップ実装されてなる本発明の第2の実施の形態に係る半導体装置を示す。図8では、半導体素子と配線基板との接合箇所を拡大して示している。
図8に示す半導体装置80を形成するにあたり、先ず、周知の半導体製造プロセスをもって形成され、主面に外部接続用端子パッド35が設けられた半導体素子34を用意する。そして、図9(a)に示すように、例えば電気めっき法等によって、半導体素子34の主面に形成された外部接続用端子パッド35上に、例えば金(Au)から成る柱状のめっきバンプ83を形成する。
(付記1)
表面に端子を備えた半導体素子と、
前記半導体素子がフリップチップ実装され、表面に基板電極を備えた配線基板と、
前記基板電極と前記端子との間に形成された突起電極と、
前記突起電極の外周面のうち、前記端子側に形成された疎水性樹脂と、
前記突起電極の外周面のうち、前記基板電極側に形成され、焼結した金属ナノ粒子を含むとともに親水性を有する接合部と、
を有することを特徴とする半導体装置。
(付記2)
付記2記載の半導体装置であって、
前記疎水性樹脂は、エポキシ樹脂であることを特徴とする半導体装置。
(付記3)
前記半導体素子がフリップチップ実装され、表面に基板電極を備えた配線基板と、
前記基板電極と前記端子との間に形成された突起電極と、
前記突起電極の外周面のうち、前記端子側に形成された親水性樹脂と、
前記突起電極の外周面のうち、前記基板電極側に形成され、焼結した金属ナノ粒子を含むとともに疎水性を有する接合部と、
を有することを特徴とする半導体装置。
(付記4)
半導体素子が配線基板にフリップチップ実装されてなる半導体装置の製造方法であって、
前記半導体素子の端子上に突起電極を形成する工程と、
前記突起電極の外周面のうち、前記端子側に疎水性樹脂を被覆形成する工程と、
前記突起電極の外周面のうち、前記基板電極側に、金属ナノ粒子を含み親水性を有する接合剤を転写する工程と、
前記接合剤が転写された前記突起電極を前記配線基板の前記基板電極に当接させて、加熱により前記突起電極を前記基板電極に接合する工程と、を有することを特徴とする半導体装置の製造方法。
(付記5)
付記4記載の半導体装置の製造方法であって、
前記疎水性樹脂は、エポキシ樹脂であることを特徴とする半導体装置の製造方法。
(付記6)
付記4又は5記載の半導体装置の製造方法であって、
前記接合剤は、親水性を有する有機溶媒が含まれた樹脂中に、ナノ粒径を有する金属粒子が分散されてなることを特徴とする半導体装置の製造方法。
(付記7)
付記4乃至6いずれか一項記載の半導体装置の製造方法であって、
前記接合剤は、前記突起電極の外周面のうち、前記基板電極側の箇所であって、且つ、前記疎水性樹脂上に転写されることを特徴とする半導体装置の製造方法。
(付記8)
半導体素子が配線基板にフリップチップ実装されてなる半導体装置の製造方法であって、
前記半導体素子の端子上に突起電極を形成する工程と、
前記突起電極の外周面のうち、前記端子側に親水性樹脂を被覆形成する工程と、
前記突起電極の外周面のうち、前記基板電極側に、金属ナノ粒子を備え疎水性を有する接合剤を転写する工程と、
前記接合剤が転写された前記突起電極を前記配線基板の前記基板電極に当接させて、加熱により前記突起電極を前記基板電極に接合する工程と、を有することを特徴とする半導体装置の製造方法。
31 配線基板
32 基板電極
33 凸状電極
33a 台座部
33b 突出部
34 半導体素子
35 外部接続用端子パッド
36 接合部
40 感光性樹脂
47 接合剤
83 めっきバンプ
Claims (5)
- 表面に端子を備えた半導体素子と、
前記半導体素子がフリップチップ実装され、表面に基板電極を備えた配線基板と、
前記基板電極と前記端子との間に形成された突起電極と、
前記突起電極の外周面のうち、前記端子側に形成された疎水性樹脂と、
前記突起電極の外周面のうち、前記基板電極側に形成され、焼結した金属ナノ粒子を含むとともに親水性を有する接合部と、
を有することを特徴とする半導体装置。 - 半導体素子が表面に基板電極を備えた配線基板にフリップチップ実装されてなる半導体装置の製造方法であって、
前記半導体素子の端子上に突起電極を形成する工程と、
前記突起電極の外周面のうち、前記端子側に疎水性樹脂を被覆形成する工程と、
前記突起電極の外周面のうち、前記基板電極側に、金属ナノ粒子を含み親水性を有する接合剤を転写する工程と、
前記接合剤が転写された前記突起電極を前記配線基板の前記基板電極に当接させて、加熱により前記突起電極を前記基板電極に接合する工程と、を有することを特徴とする半導体装置の製造方法。 - 請求項2記載の半導体装置の製造方法であって、
前記疎水性樹脂は、エポキシ樹脂であることを特徴とする半導体装置の製造方法。 - 請求項2又は3記載の半導体装置の製造方法であって、
前記接合剤は、親水性を有する有機溶媒が含まれた樹脂中に、ナノ粒径を有する金属粒子が分散されてなることを特徴とする半導体装置の製造方法。 - 請求項2乃至4いずれか一項記載の半導体装置の製造方法であって、
前記接合剤は、前記突起電極の外周面のうち、前記基板電極側であって、且つ、前記疎水性樹脂上に転写されることを特徴とする半導体装置の製造方法。
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