JP2009064897A - 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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- JP2009064897A JP2009064897A JP2007230323A JP2007230323A JP2009064897A JP 2009064897 A JP2009064897 A JP 2009064897A JP 2007230323 A JP2007230323 A JP 2007230323A JP 2007230323 A JP2007230323 A JP 2007230323A JP 2009064897 A JP2009064897 A JP 2009064897A
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Abstract
【解決手段】デバイスが作り込まれた半導体基板11の表面に、デバイスの電極パッド12b,12cが露出する開口部を有して絶縁層13,14が形成され、該絶縁層上に形成された導体層の一部分によって画定される外部端子用パッド17と各電極パッド12b,12cとがボンディングワイヤ18,19により接続されている。さらに、外部端子用パッド17上に導体ポスト20が形成され、該導体ポストが形成されている半導体基板11上の領域を覆い、かつ導体ポスト20の頂上部を露出させて封止樹脂層22が形成され、導体ポスト20の頂上部に外部接続端子23が接合されている。
【選択図】図3
Description
図1〜図3は本発明の第1の実施形態に係るCSP構造の半導体装置の製造工程を断面図の形態で示したものである。
図6は本発明の第2の実施形態に係る半導体装置の製造工程の一部を断面図の形態で示したものである。
図7は本発明の第3の実施形態に係る半導体装置の製造工程の一部を断面図の形態で示したものである。
図8は本発明の第4の実施形態に係る半導体装置の製造工程の一部を断面図の形態で示したものである。
11…半導体(シリコン)基板、
12a,12b,12c,41〜45…電極パッド、
13…パッシベーション膜、
14…絶縁膜(ポリイミド樹脂層)、
15…金属薄膜(シード層)、
16…再配線層、
16P…端子形成部分、
17,17a,17b,17c,46,47…ポスト側パッド(外部端子用パッド)、
18,19,W1〜W5…ボンディングワイヤ、
20…導体(Cu)ポスト、
21…保護膜(ポリイミド樹脂層)、
22…封止樹脂層(エポキシ樹脂層)、
23…外部接続端子(はんだボール)、
30…半導体(シリコン)ウエハ、
50…他の半導体装置(チップ)、
51…実装基板。
Claims (8)
- デバイスが作り込まれた半導体基板の表面に、前記デバイスの電極パッドが露出する開口部を有して絶縁層が形成され、前記電極パッドと前記絶縁層上に形成された導体層の一部分によって画定される外部端子用パッドとがボンディングワイヤにより接続され、前記外部端子用パッド上に導体ポストが形成されると共に、前記導体ポストが形成されている前記半導体基板上の領域を覆い、かつ前記導体ポストの頂上部を露出させて封止樹脂層が形成され、前記導体ポストの頂上部に外部接続端子が接合されていることを特徴とする半導体装置。
- 前記ボンディングワイヤの端部が、前記導体ポストに埋め込まれて前記外部端子用パッドに接続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。
- 前記外部端子用パッドを構成する導体層が下層及び上層の2層構造からなり、前記ボンディングワイヤの端部が前記下層に接続され、かつ前記上層に埋め込ま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。
- デバイスが作り込まれた半導体基板の表面に、前記デバイスの電極パッドが露出する開口部を有して絶縁層が形成され、前記絶縁層上に形成された導体層の一部分によって外部端子用パッドが画定されると共に、前記外部端子用パッド上に導体ポストが形成され、前記電極パッドに一端が接続されたボンディングワイヤの他端が、フローティング状態で前記導体ポストに埋め込まれると共に、前記導体ポストが形成されている前記半導体基板上の領域を覆い、かつ前記導体ポストの頂上部を露出させて封止樹脂層が形成され、前記導体ポストの頂上部に外部接続端子が接合されていることを特徴とする半導体装置。
- 前記デバイスの複数の電極パッドにそれぞれ一端が接続された複数のボンディングワイヤの各々の他端が、前記導体ポストに電気的に接続されていることを特徴とする請求項1から4のいずれか一項に記載の半導体装置。
- 複数のデバイスが作り込まれた半導体ウエハを用意する工程と、
前記半導体ウエハのデバイスが作り込まれている側の表面に、各デバイスの複数の電極パッドが露出する複数の開口部を有するように絶縁層を形成し、さらに該絶縁層上にシード層を形成する工程と、
前記シード層の、前記複数の開口部のうち一部の開口部を含む領域に、所要の形状にパターニングされた配線層を形成すると共に、前記シード層の他の領域に外部端子用パッドを形成する工程と、
前記シード層の、前記複数の開口部のうち残りの開口部から露出している電極パッド上の部分と、前記外部端子用パッドとをボンディングワイヤで接続する工程と、
前記配線層の端子形成部分と前記外部端子用パッド上にそれぞれ導体ポストを形成する工程と、
前記導体ポストが形成されていない領域において前記配線層上を覆うように保護膜を形成する工程と、
前記導体ポストの頂上部を露出させて、前記保護膜で覆われていない残りの部分を覆うように封止樹脂で封止する工程と、
前記導体ポストの頂上部に外部接続端子を接合し、該外部接続端子が接合された半導体ウエハを個々のデバイス単位に分割する工程とを含むことを特徴とする半導体装置の製造方法。 - 前記ボンディングワイヤで接続する工程において、前記シード層の前記電極パッド上の部分に一端が接続されたボンディングワイヤの他端を、前記外部端子用パッドの中央部に近い箇所に接続し、
前記導体ポストを形成する工程において、前記ボンディングワイヤの他端が埋め込まれるように当該導体ポストを形成することを特徴とする請求項6に記載の半導体装置の製造方法。 - 複数のデバイスが作り込まれた半導体ウエハを用意する工程と、
前記半導体ウエハのデバイスが作り込まれている側の表面に、各デバイスの複数の電極パッドが露出する複数の開口部を有するように絶縁層を形成し、さらに該絶縁層上にシード層を形成する工程と、
前記シード層の、前記複数の開口部のうち一部の開口部から露出している電極パッド上の部分に、一方の端部をフローティング状態としたボンディングワイヤの他方の端部を接続する工程と、
前記シード層の、前記複数の開口部のうち残りの開口部を含む領域に、所要の形状にパターニングされた配線層を形成すると共に、前記シード層の他の領域に外部端子用パッドを形成する工程と、
前記配線層の端子形成部分と前記外部端子用パッド上にそれぞれ導体ポストを形成する工程と、
前記導体ポストが形成されていない領域において前記配線層上を覆うように保護膜を形成する工程と、
前記導体ポストの頂上部を露出させて、前記保護膜で覆われていない残りの部分を覆うように封止樹脂で封止する工程と、
前記導体ポストの頂上部に外部接続端子を接合し、該外部接続端子が接合された半導体ウエハを個々のデバイス単位に分割する工程とを含むことを特徴とする半導体装置の製造方法。
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