JP6955864B2 - 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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- JP6955864B2 JP6955864B2 JP2016251532A JP2016251532A JP6955864B2 JP 6955864 B2 JP6955864 B2 JP 6955864B2 JP 2016251532 A JP2016251532 A JP 2016251532A JP 2016251532 A JP2016251532 A JP 2016251532A JP 6955864 B2 JP6955864 B2 JP 6955864B2
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Description
本発明に係る他の半導体装置は、半導体基板と、前記半導体基板の主面上に設けられた導電体と、前記導電体の表面を覆い且つ前記導電体を部分的に露出させる開口部を有する第1の絶縁膜及び第2の絶縁膜を含む絶縁体層と、前記導電体の、前記開口部において露出した部分に接続された外部接続端子と、を含み、前記絶縁体層は、表面に前記導電体の側に向けて凹んだ凹部を有し、前記開口部が、前記凹部の底部に設けられ、前記外部接続端子の、前記半導体基板の主面と平行な平面方向における端部が、前記凹部の壁面上に配置されており、前記第1の絶縁膜は、前記導電体の表面を覆い、前記導電体を部分的に露出させる第1の開口部を有し、前記第2の絶縁膜は、前記第1の絶縁膜の表面及び前記導電体の露出部分を覆い、前記第1の開口部に対応する部分に前記凹部を有すると共に前記凹部の底部に前記導電体を部分的に露出させる第2の開口部を前記開口部として有し、前記外部接続端子の前記平面方向における端部が、前記第1の開口部の前記平面方向における端部の内側であり且つ前記第2の開口部の前記平面方向における端部の外側に配置されている。
本発明に係る半導体装置の他の製造方法は、半導体基板の主面上に設けられた導電体の表面を覆う絶縁体層を形成する工程と、前記絶縁体層に、前記導電体を部分的に露出させる開口部を形成する工程と、前記導電体の、前記開口部において露出した部分に接続された外部接続端子を形成する工程と、を含む半導体装置の製造方法であって、前記絶縁体層の表面に前記導電体の側に向けて凹んだ凹部を形成し、前記開口部を前記凹部の底部に配置し、前記外部接続端子の、前記半導体基板の主面と平行な平面方向における端部を、前記凹部の壁面上に配置し、前記絶縁体層を形成する工程は、前記導電体の表面を覆う第1の絶縁膜を形成する工程と、前記導電体を部分的に露出させる第1の開口部を前記第1の絶縁膜に形成する工程と、前記第1の絶縁膜の表面及び前記導電体の露出部分を覆う第2の絶縁膜を形成し、前記第2の絶縁膜の前記第1の開口部に対応する部分に、前記凹部を形成する工程と、前記導電体を部分的に露出させる第2の開口部を、前記開口部として前記凹部の底部に形成する工程と、を含み、前記外部接続端子の前記平面方向における端部が、前記第1の開口部の前記平面方向における端部の内側であり且つ前記第2の開口部の前記平面方向における端部の外側に配置されている。
図4は、本発明の第1の実施形態に係る半導体装置1の構成を示す断面図である。図5は、半導体装置1の外部接続端子の周辺領域の構成を示す断面図である。
図8は、本発明の第2の実施形態に係る半導体装置2の構成を示す断面図である。図9は、半導体装置2の外部接続端子の周辺領域の構成を示す断面図である。第2の実施形態に係る半導体装置2は、再配線20の表面を覆う絶縁体層30の構成が、上記した第1の実施形態と異なる。
10 半導体基板
12 電極パッド
20 再配線
30 絶縁体層
31 第1の絶縁膜
32 第2の絶縁膜
41 第1の開口部
42 第2の開口部
43 凹部
50 外部接続端子
51 めっきシード層
52 下地層
53 バンプ
Claims (11)
- 半導体基板と、
前記半導体基板の主面上に設けられた導電体と、
前記導電体の表面を覆い且つ前記導電体を部分的に露出させる開口部を有する第1の絶縁膜及び第2の絶縁膜を含む絶縁体層と、
前記導電体の、前記開口部において露出した部分に接続された外部接続端子と、
を含み、
前記絶縁体層は、表面に前記導電体の側に向けて凹んだ凹部を有し、前記開口部が、前記凹部の底部に設けられ、
前記外部接続端子の、前記半導体基板の主面と平行な平面方向における端部が、前記凹部の壁面上に配置されており、
前記第1の絶縁膜は、前記導電体の表面を覆い且つ前記導電体を部分的に露出させる第1の開口部を前記開口部として有し、
前記第2の絶縁膜は、前記第1の絶縁膜の表面を覆い且つ前記第1の絶縁膜の前記第1の開口部を含む領域を露出させる第2の開口部を前記凹部として有し、
2つの前記外部接続端子が形成される間の領域において、前記第1の絶縁膜と前記第2の絶縁膜との接触面が前記半導体基板の主面と平行な平面方向に対して平坦であり、
前記外部接続端子の前記平面方向における端部が、前記第1の開口部の前記平面方向における端部の外側であり且つ前記第2の開口部の前記平面方向における端部の内側に配置され、且つ前記第1の絶縁膜の前記第2の開口部において露出した部分に配置されている
半導体装置。 - 前記絶縁体層の前記導電体の表面を覆う厚さが、前記開口部の前記平面方向における端部から前記開口部の外側に向けて連続的または段階的に厚くなっている
請求項1に記載の半導体装置。 - 半導体基板と、
前記半導体基板の主面上に設けられた導電体と、
前記導電体の表面を覆い且つ前記導電体を部分的に露出させる開口部を有する第1の絶縁膜及び第2の絶縁膜を含む絶縁体層と、
前記導電体の、前記開口部において露出した部分に接続された外部接続端子と、
を含み、
前記絶縁体層は、表面に前記導電体の側に向けて凹んだ凹部を有し、前記開口部が、前記凹部の底部に設けられ、
前記外部接続端子の、前記半導体基板の主面と平行な平面方向における端部が、前記凹部の壁面上に配置されており、
前記第1の絶縁膜は、前記導電体の表面を覆い、前記導電体を部分的に露出させる第1の開口部を有し、
前記第2の絶縁膜は、前記第1の絶縁膜の表面及び前記導電体の露出部分を覆い、前記第1の開口部に対応する部分に前記凹部を有すると共に前記凹部の底部に前記導電体を部分的に露出させる第2の開口部を前記開口部として有し、
前記外部接続端子の前記平面方向における端部が、前記第1の開口部の前記平面方向における端部の内側であり且つ前記第2の開口部の前記平面方向における端部の外側に配置されている
半導体装置。 - 前記絶縁体層の前記導電体の表面を覆う厚さが、前記開口部の前記平面方向における端部から前記開口部の外側に向けて連続的または段階的に厚くなっている
請求項3に記載の半導体装置。 - 前記凹部の壁面が、湾曲した傾斜面である
請求項3または請求項4に記載の半導体装置。 - 前記凹部の壁面は、第1の傾斜面と前記第1の傾斜面より緩やかな傾斜角を有する第2の傾斜面とを備え、
前記外部接続端子の前記平面方向における端部は、前記第2の傾斜面上に配置されている
請求項3から請求項5のいずれか1項に記載の半導体装置。 - 前記外部接続端子は、直径が8μm以上15μm以下のバンプを有する
請求項1から請求項6のいずれか1項に記載の半導体装置。 - 半導体基板の主面上に設けられた導電体の表面を覆う絶縁体層を形成する工程と、
前記絶縁体層に、前記導電体を部分的に露出させる開口部を形成する工程と、
前記導電体の、前記開口部において露出した部分に接続された外部接続端子を形成する工程と、
を含む半導体装置の製造方法であって、
前記絶縁体層の表面に前記導電体の側に向けて凹んだ凹部を形成し、前記開口部を前記凹部の底部に配置し、
前記外部接続端子の、前記半導体基板の主面と平行な平面方向における端部を、前記凹部の壁面上に配置し、
前記絶縁体層を形成する工程は、
前記導電体の表面を覆う第1の絶縁膜を形成する工程と、
前記導電体を部分的に露出させる第1の開口部を、前記開口部として前記第1の絶縁膜に形成する工程と、
前記第1の絶縁膜の表面を覆う第2の絶縁膜を形成する工程と、
前記第1の絶縁膜の前記第1の開口部を含む領域を露出させる第2の開口部を、前記凹部として前記第2の絶縁膜に形成する工程と、
を含み、
2つの前記外部接続端子が形成される間の領域において、前記第1の絶縁膜と前記第2の絶縁膜とが互いに前記半導体基板の主面と平行な平面方向に対して平坦な面で接しており、
前記外部接続端子の前記平面方向における端部が、前記第1の開口部の前記平面方向における端部の外側であり且つ前記第2の開口部の前記平面方向における端部の内側に配置され、且つ前記第1の絶縁膜の前記第2の開口部において露出した部分に配置されている
半導体装置の製造方法。 - 半導体基板の主面上に設けられた導電体の表面を覆う絶縁体層を形成する工程と、
前記絶縁体層に、前記導電体を部分的に露出させる開口部を形成する工程と、
前記導電体の、前記開口部において露出した部分に接続された外部接続端子を形成する工程と、
を含む半導体装置の製造方法であって、
前記絶縁体層の表面に前記導電体の側に向けて凹んだ凹部を形成し、前記開口部を前記凹部の底部に配置し、
前記外部接続端子の、前記半導体基板の主面と平行な平面方向における端部を、前記凹部の壁面上に配置し、
前記絶縁体層を形成する工程は、
前記導電体の表面を覆う第1の絶縁膜を形成する工程と、
前記導電体を部分的に露出させる第1の開口部を前記第1の絶縁膜に形成する工程と、
前記第1の絶縁膜の表面及び前記導電体の露出部分を覆う第2の絶縁膜を形成し、前記第2の絶縁膜の前記第1の開口部に対応する部分に、前記凹部を形成する工程と、
前記導電体を部分的に露出させる第2の開口部を、前記開口部として前記凹部の底部に形成する工程と、
を含み、
前記外部接続端子の前記平面方向における端部が、前記第1の開口部の前記平面方向における端部の内側であり且つ前記第2の開口部の前記平面方向における端部の外側に配置されている
半導体装置の製造方法。 - 前記凹部は、前記第2の絶縁膜が、前記第1の開口部によって形成される段差を覆うカバレージによって形成される
請求項9に記載の製造方法。 - 前記外部接続端子は、直径が8μm以上15μm以下のバンプを有する
請求項8から請求項10のいずれか1項に記載の製造方法。
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