JP4425235B2 - 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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- JP4425235B2 JP4425235B2 JP2006088904A JP2006088904A JP4425235B2 JP 4425235 B2 JP4425235 B2 JP 4425235B2 JP 2006088904 A JP2006088904 A JP 2006088904A JP 2006088904 A JP2006088904 A JP 2006088904A JP 4425235 B2 JP4425235 B2 JP 4425235B2
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Description
また、前記金属パッド上に電極接続部を形成する工程は、前記パッドに配線パターンを接続し、前記配線パターン上に前記電極接続部を形成することを特徴とする。
Claims (19)
- 半導体基板の表面側に形成された金属パッドと、
前記金属パッドの表面を少なくとも一部露出するように半導体基板上に形成された第1の絶縁膜と、
前記第1の絶縁膜を被覆するように形成された保護膜と、
前記第1の絶縁膜及び保護膜に形成された開口部を埋設するように前記金属パッド上に形成された電極接続部と、
前記半導体基板の裏面から前記金属パッドの裏面に至るように形成された開口部内の側壁に形成された第2の絶縁膜と、
前記第2の絶縁膜を介して前記開口部内に形成され、前記金属パッドの裏面に接続された金属膜と、
前記金属膜と電気的に接続された導電端子とを具備することを特徴とする半導体装置。 - 前記金属膜に接続された配線パターンが前記半導体基板の裏面に形成され、前記配線パターン上に前記導電端子が形成されていることを特徴とする請求項1に記載の半導体装置。
- 前記電極接続部は、前記開口部内の前記金属パッド上にNi膜,Au膜が形成され、前記開口部を埋設するように前記Ni膜,Au膜上にCu膜が積層されていることを特徴とする請求項1または請求項2に記載の半導体装置。
- 前記Cu膜上にAu膜が積層されていることを特徴とする請求項3に記載の半導体装置。
- 前記保護膜は、ポリイミドまたはエポキシ樹脂から成ることを特徴とする請求項1乃至請求項4のいずれか1項に記載の半導体装置。
- 前記電極接続部と前記金属パッドとの電気的な接続を介在する配線が、前記半導体基板の表面上に形成されていることを特徴とする請求項1乃至請求項5のいずれか1項に記載の半導体装置。
- 前記請求項1乃至請求項6のいずれか1項に記載の半導体装置と他の半導体装置が積層された積層型の半導体装置であって、相互間の電気的な接続が前記電極接続部を介して行われていることを特徴とする積層型の半導体装置。
- 前記請求項1乃至請求項6のいずれか1項に記載された半導体装置を少なくとも2個積層させた積層型の半導体装置であって、前記少なくとも2個積層された半導体装置のうち一方の半導体装置の前記電極接続部と、もう一方の半導体装置の前記導電端子とが接続されていることを特徴とする積層型の半導体装置。
- 半導体基板上に形成された金属パッドの表面を少なくとも一部露出するように前記半導体基板上に第1の絶縁膜を形成する工程と、
前記第1の絶縁膜を被覆するように保護膜を形成する工程と、
前記第1の絶縁膜及び保護膜に形成された開口部を埋設するように前記金属パッド上に電極接続部を形成する工程と、
前記金属パッドが形成された半導体基板と前記半導体基板を支持する支持体とを接着体を用いて貼り合わせる工程と、
前記半導体基板の裏面から前記金属パッドの裏面に至るように開口部を形成する工程と、
前記開口部内の側壁に第2の絶縁膜を形成する工程と、
前記第2の絶縁膜を介して前記開口部内に形成され、前記金属パッドの裏面に金属膜を接続する工程と、
前記金属膜上に電極を形成する工程と、
前記半導体基板の裏面から所定深さ位置までダイシングする工程と、
前記半導体基板と前記支持体とを分離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。 - 前記半導体基板と前記支持体とを分離する工程は、前記接着体を溶液を用いて溶かす工程であることを特徴とする請求項9に記載の半導体装置の製造方法。
- 前記半導体基板と前記支持体とを分離する工程は、前記接着体としての有機膜をアセトン溶液で溶かす工程であることを特徴とする請求項9または請求項10に記載の半導体装置の製造方法。
- 前記金属膜上に電極を形成する工程が、当該金属膜上に配線パターンを形成し、当該配線パターン上に電極を形成する工程であることを特徴とする請求項9乃至請求項11のいずれか1項に記載の半導体装置の製造方法。
- 前記半導体基板の裏面から開口を形成する工程の前に、その裏面を研磨することを特徴とする請求項9乃至請求項12のいずれか1項に記載の半導体装置の製造方法。
- 前記支持体として、Si基板、酸化膜、ガラス基板、セラミック基板を用いることを特徴とする請求項9乃至請求項13のいずれか1項に記載の半導体装置の製造方法。
- 前記金属パッド上に電極接続部を形成する工程は、前記開口部内の前記金属パッド上にNi膜,Au膜を形成し、前記開口部を埋設するようにNi膜,Au膜上にCu膜を積層することを特徴とする請求項9乃至請求項14のいずれか1項に記載の半導体装置の製造方法。
- 前記金属パッド上に電極接続部を形成する工程は、前記Cu膜上にAu膜を積層する工程を含むことを特徴とする請求項15に記載の半導体装置の製造方法。
- 前記金属パッド上に電極接続部を形成する工程は、前記パッドに配線パターンを接続し、前記配線パターン上に前記電極接続部を形成することを特徴とする請求項9乃至請求項16のいずれか1項に記載の半導体装置の製造方法。
- 請求項9乃至請求項17のいずれか1項に記載の半導体装置と他の半導体装置とを積層する工程を有することを特徴とする積層型の半導体装置の製造方法。
- 請求項9乃至請求項18のいずれか1項に記載の半導体装置と他の半導体装置とを積層する工程は、一方の半導体装置の前記電極接続部と、もう一方の半導体装置の前記電極とを接続することを特徴とする積層型の半導体装置の製造方法。
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