JP2008218529A - 回路装置、回路装置の製造方法および半導体モジュール - Google Patents
回路装置、回路装置の製造方法および半導体モジュール Download PDFInfo
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Abstract
【解決手段】回路装置10は、回路素子が形成された半導体基板12と、半導体基板12の表面Sに形成された電極14と、電極14の上に設けられた絶縁層16と、絶縁層16の上に設けられた第2の配線層18と、絶縁層16を貫通して電極14および第2の配線層18を電気的に接続する導電性バンプ20と、を備える。導電性バンプ20は、電極14と第2の配線層18との導通方向の結晶粒のサイズより、半導体基板12の表面Sと平行な方向の結晶粒のサイズが大きい。
【選択図】図1
Description
[回路装置の構造]
図1は、第1の実施の形態に係る回路装置の構成を示す概略断面図である。図1に示すように、第1の実施の形態に係る回路装置10は、表面S(上面側)に周知の技術により所定の電気回路などの回路素子(不図示)が形成された半導体基板12と、半導体基板12の実装面となる表面S(特に周辺部)に形成された第1の配線層の一部である回路素子の電極14と、電極14の上に設けられた絶縁層16と、絶縁層16の上に設けられた第2の配線層18と、絶縁層16を貫通して電極14および第2の配線層18を電気的に接続する導体部としての導電性バンプ20と、を備える。
次に、銅箔を用いて形成された導電性バンプ20について詳述する。図2は、図1に示す導電性バンプ20とビアコンタクト18bとの界面領域Aにおける結晶粒を模式的に示した図である。図2に示すように、導電性バンプ20は、電極14と第2の配線層18との導通方向Zの結晶粒30のサイズL1より、半導体基板12の表面Sと平行な方向Xまたは方向Yの結晶粒のサイズL2が大きい。
次に、図4〜図6を参照して第1の実施の形態に係る回路装置の製造方法について説明する。図4(a)〜図4(c)は、第1の実施の形態に係る回路装置の製造方法における第1の工程を説明するための概略断面図である。図5(a)〜図5(c)は、第1の実施の形態に係る回路装置の製造方法における第2の工程および第3の工程を説明するための概略断面図である。図6(a)〜図6(b)は、第1の実施の形態に係る回路装置の製造方法における第4の工程および第5の工程を説明するための概略断面図である。
図7は、第2の実施の形態に係る半導体モジュールの構成を示す概略断面図である。本実施の形態に係る半導体モジュール100は、上述した回路装置10を複数内蔵している。また、半導体モジュール100は、回路装置10のそれぞれを外部接続端子(不図示)と電気的に導通する配線構造130を備えている。なお、第1の実施の形態で説明した内容と同じものについては同じ符号を付して説明を省略する。本実施の形態に係る半導体モジュール100によれば、第1の実施の形態で説明した効果と同様の効果を得ることができる。
Claims (8)
- 回路素子が形成された基板と、
前記基板の表面に形成された第1の配線層と、
前記第1の配線層の上に設けられた絶縁層と、
前記絶縁層の上に設けられた第2の配線層と、
前記絶縁層を貫通して前記第1の配線層および前記第2の配線層を電気的に接続する導体部と、を備え、
前記導体部は、前記第1の配線層と前記第2の配線層との導通方向の結晶粒のサイズより、前記基板の表面と平行な方向の結晶粒のサイズが大きいことを特徴とする回路装置。 - 前記導体部は、結晶粒のサイズの異方性が圧延により形成された圧延材料であることを特徴とする請求項1に記載の回路装置。
- 前記導体部は、前記基板の表面との接触面と鈍角をなす側面部を有することを特徴とする請求項1または2に記載の回路装置。
- 請求項1乃至3のいずれかに記載の回路装置を複数内蔵し、該回路装置のそれぞれを外部接続端子と電気的に導通する配線構造を備えることを特徴とする半導体モジュール。
- 絶縁層の一方の面上に導体部を形成する第1の工程と、
回路素子が形成された基板の表面に第1の配線層を形成する第2の工程と、
前記第1の配線層と前記導体部とを接触させた状態で前記基板と前記絶縁層とを圧着して前記導体部を前記絶縁層に埋め込む第3の工程と、
前記絶縁層の他方の面から前記導体部を露出させる第4の工程と、
前記導体部の露出した箇所および前記絶縁層の上に第2の配線層を設ける第5の工程と、を含み、
前記導体部を、前記第1の配線層と前記第2の配線層との導通方向の結晶粒のサイズより、前記基板の表面と平行な方向の結晶粒のサイズが大きくなるように形成することを特徴とする回路装置の製造方法。 - 前記第1の工程において、前記導体部を、結晶粒のサイズの異方性が圧延により形成された圧延材料を用いて形成することを特徴とする請求項5に記載の回路装置の製造方法。
- 前記第1の工程において、前記導体部を、前記絶縁層の表面と接する面と鋭角をなす側面部を有するように形成することを特徴とする請求項5または6に記載の回路装置の製造方法。
- 回路素子が形成された基板の表面に設けられた第1の配線層と絶縁層の一方の面上に形成された導体部とを接触させた状態で、前記基板と前記絶縁層とを圧着して前記導体部を前記絶縁層に埋め込む埋め込み工程と、
前記絶縁層の他方の面から前記導体部を露出させる露出工程と、
前記導体部の露出した箇所および前記絶縁層の上に第2の配線層を設ける配線工程と、を含み、
前記導体部を、前記第1の配線層と前記第2の配線層との導通方向の結晶粒のサイズより、前記基板の表面と平行な方向の結晶粒のサイズが大きくなるように形成することを特徴とする回路装置の製造方法。
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US12/039,054 US7745938B2 (en) | 2007-02-28 | 2008-02-28 | Circuit device, a method for manufacturing a circuit device, and a semiconductor module |
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Cited By (2)
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WO2017145876A1 (ja) * | 2016-02-26 | 2017-08-31 | 国立大学法人茨城大学 | 銅の成膜装置、銅の成膜方法、銅配線形成方法、銅配線 |
KR20200055260A (ko) * | 2018-11-13 | 2020-05-21 | 삼성전자주식회사 | 반도체 패키지 |
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US7969005B2 (en) * | 2007-04-27 | 2011-06-28 | Sanyo Electric Co., Ltd. | Packaging board, rewiring, roughened conductor for semiconductor module of a portable device, and manufacturing method therefor |
JP5012896B2 (ja) * | 2007-06-26 | 2012-08-29 | 株式会社村田製作所 | 部品内蔵基板の製造方法 |
JP4987823B2 (ja) * | 2008-08-29 | 2012-07-25 | 株式会社東芝 | 半導体装置 |
CN102484101A (zh) * | 2009-08-13 | 2012-05-30 | SKLink株式会社 | 电路基板及其制造方法 |
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KR102179167B1 (ko) | 2018-11-13 | 2020-11-16 | 삼성전자주식회사 | 반도체 패키지 |
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