JP5183949B2 - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
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- JP5183949B2 JP5183949B2 JP2007092462A JP2007092462A JP5183949B2 JP 5183949 B2 JP5183949 B2 JP 5183949B2 JP 2007092462 A JP2007092462 A JP 2007092462A JP 2007092462 A JP2007092462 A JP 2007092462A JP 5183949 B2 JP5183949 B2 JP 5183949B2
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- semiconductor element
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Description
少なくとも第一の半導体素子の回路面と第二の半導体素子の回路面とが対向して配置された半導体装置であって、
前記第一の半導体素子は少なくとも側面の一部が第一の絶縁材料によって埋設され、
前記第二の半導体素子は少なくとも前記回路面が第二の絶縁材料によって被覆され、
前記第一の半導体素子の回路面と前記第二の半導体素子の回路面との間に配置された絶縁層に接続電極が埋設され、
前記第一の半導体素子の回路面とは反対側の面と同一の向きの前記第一の絶縁材料の面に外部接続用端子が設けられ、
前記接続電極は前記第一の半導体素子の回路面と前記第二の半導体素子の回路面とを導通しており、
前記絶縁層の前記接続電極が埋設された領域以外の領域を通る導通部材を介して前記第一の半導体素子と前記外部接続用端子とが導通されている
ことを特徴とする半導体装置、
が提供される。
上記の半導体装置を製造する方法であって、
支持基板上に前記外部接続用端子を形成する工程と、
前記支持基板の前記外部接続用端子を形成する領域とは異なる領域に、前記第一の半導体素子をフェイスアップに設置する工程と、
前記第一の半導体素子の少なくとも側面の一部と前記外部接続用端子とを前記第一の絶縁材料により埋設する工程と、
前記第一の絶縁材料に前記導通部材の少なくとも一部を形成する工程と、
前記第二の半導体素子をフェイスダウンによって前記接続電極を介して前記第一の半導体素子と接続する工程と、
前記第二の半導体素子の少なくとも回路面を前記第二の絶縁材料により被覆する工程と、
前記支持基板を除去する工程と、
を含むことを特徴とする半導体装置の製造方法、
が提供される。
上記の半導体装置を製造する方法であって、
支持基板上に前記外部接続用端子および金属板を形成する工程と、
前記金属板上に前記第一の半導体素子をフェイスアップに設置する工程と、
前記第一の半導体素子と前記外部接続用端子とを導通するボンディングワイヤを形成する工程と、
前記第一の半導体素子の少なくとも側面の一部と前記外部接続用端子と前記ボンディングワイヤとを前記第一の絶縁材料により埋設する工程と、
前記第二の半導体素子をフェイスダウンによって前記接続電極を介して前記第一の半導体素子と接続する工程と、
前記第二の半導体素子の少なくとも回路面を前記第二の絶縁材料により被覆する工程と、
前記支持基板を除去する工程と、
を含むことを特徴とする半導体装置の製造方法、
が提供される。
図1に本発明の第一の実施の形態としての半導体装置の断面図を示す。外部接続用はんだ13を形成する外部接続用端子8の脇に第一の半導体素子1がフェイスアップで実装され、第一の絶縁材料2により第一の半導体素子1の周囲が絶縁されている。
支持基板23上に外部接続用端子8を形成する工程と、
支持基板23の外部接続用端子8を形成する領域とは異なる領域に、第一の半導体素子1をフェイスアップに設置する工程と、
第一の半導体素子1の少なくとも側面の一部と外部接続用端子8とを第一の絶縁材料2により埋設する工程と、
第一の絶縁材料2に、導通部材の少なくとも一部である配線3およびビア7、ならびに接続電極4を形成する工程と、
第二の半導体素子5をフェイスダウンによって接続電極4を介して第一の半導体素子1と接続する工程と、
第二の半導体素子5の少なくとも回路面を第二の絶縁材料6により被覆する工程と、
支持基板23を除去する工程と、
を含む。
本発明の第二の実施の形態を、図3に示す。本実施の形態と第一の実施の形態との違いは、第一の半導体素子1の回路面と反対側の面(回路面の他方の面、即ち下面)即ち外部接続用端子8が設けられる側と同じ側の面に金属板10を付した点である。金属板10の少なくとも側面の一部が第一の絶縁材料2中に埋設されている。
本発明の第三の実施の形態を、図5に示す。本実施の形態と第二の実施の形態との違いは、第一の半導体素子1の回路面に金属突起11が形成され、第一の半導体素子1と第二の半導体素子5とが金属突起11を介して接続されている点である。即ち、本実施形態では、接続電極は第一の半導体素子1に付された金属突起11からなる。
本発明の第四の実施の形態を図7に示す。本実施の形態と第三の実施の形態との相違は、外部接続用端子8と第一の半導体素子1とがボンディングワイヤ12によって接続されている点である。即ち、本実施形態では、導通部材は第一の絶縁材料2中に埋設されたボンディングワイヤ12を含んでなる。また、第一の半導体素子1と第二の半導体素子5とを接続するための金属突起11は、第一の半導体素子1の回路面に形成され、第二の半導体素子5と第一の半導体素子1とがバンプ9を介して回路面を対向させるように接続されている。バンプ9による接続部を保護するように第二の絶縁材料6による封止がなされている。
支持基板23上に外部接続用端子8および金属板10を形成する工程と、
金属板10上に第一の半導体素子1をフェイスアップに設置する工程と、
第一の半導体素子1と外部接続用端子8とを導通するボンディングワイヤ12を形成する工程と、
第一の半導体素子1の少なくとも側面の一部と外部接続用端子8とボンディングワイヤ12とを第一の絶縁材料2により埋設する工程と、
第二の半導体素子5をフェイスダウンによって接続電極たる金属突起11を介して第一の半導体素子1と接続する工程と、
第二の半導体素子5の少なくとも回路面を第二の絶縁材料6により被覆する工程と、
支持基板23を除去する工程と、
を含む。
本発明の第五の実施の形態を図8に示す。本実施の形態においては、配線3は、第一の半導体素子1から独立して形成され、ビア7を介して外部接続用端子8と接続されている。第一の半導体素子1と配線3とは第二の絶縁材料6中に埋設されたボンディングワイヤ12を介して接続されている。
図9に、金属板10を外部接続用はんだ13が形成可能な外部接続用端子8のように加工した実施形態を示す。このような構成とすることで、放熱特性のさらなる向上が可能になる。その上、放熱のみならず、ビア7および配線3を介して第一の半導体素子1と接続することで、第一の半導体素子1の底面に外部接続用はんだ13を設けることが可能となり、多ピン化にも柔軟に対応することができる。即ち、本実施形態では、金属板10が配線層を兼ねている。
これまで述べてきた実施の形態は2つの半導体素子を接続するものであったが、図10に示すように金属板10に第三の半導体素子22を接続することもできる。この場合は金属板10を外部接続用はんだ13が形成可能な外部接続用端子8もしくは第三の半導体素子22が接続可能な電極寸法に加工し、ビア7および配線3を介して第一の半導体素子1と接続することで、3つの半導体素子を含むマルチチップパッケージとなる。
図11に、第二の半導体素子5の上にフェイスアップで第三の半導体素子22を搭載した例を示す。この例のように、ワイヤボンディングで配線3と接続することでマルチチップ化を図ることが容易となる。
シリコンウエハを支持基板23として準備し、メッキ法によりメッキ膜を形成して、該メッキ膜をエッチングにより加工して外部接続用端子8であるランドを形成する。50マイクロメートルの厚さの第一の半導体素子1を、外部接続用端子8を基準として搭載位置を決め、熱硬化性の接着材にてフェイスアップに実装する。
第一の半導体素子1を実装する箇所に外部接続用端子8と同一面上に金属板10を設ける。金属板10は第一の半導体素子1の搭載位置あわせ精度を高める効果と、半導体素子の吸湿を防止する効果と、放熱性を高める効果とを併せ持つ。金属板10上に第一の半導体素子1を実装する場合は熱硬化性の接着材を使用するが、放熱効果を高めるためには金属粉末を含有する導電性の接着材を使用しても良い。
また、接続電極4の部分について、あらかじめ第一の半導体素子1に金属突起11を形成する工程を採用した場合、第一の絶縁材料2を供給した後、金属突起11が露出するまで研磨加工する。
また、ボンディングワイヤ12により外部接続用端子8と第一の半導体素子1とを接続する場合は、銅配線3の表面にボンディング性が高くなる金属を形成することが望ましい。
2 第一の絶縁材料
3 配線
4 接続電極
5 第二の半導体素子
6 第二の絶縁材料
7 ビア
8 外部接続用端子
9 バンプ
10 金属板
11 金属突起
12 ボンディングワイヤ
13 外部接続用はんだ
21 絶縁性接着材
22 半導体素子
23 支持基板
Claims (19)
- 少なくとも第一の半導体素子の回路面と第二の半導体素子の回路面とが対向して配置され、前記第一の半導体素子は少なくとも側面の一部が第一の絶縁材料によって埋設され、前記第二の半導体素子は少なくとも前記回路面が第二の絶縁材料によって被覆され、前記第一の半導体素子の回路面と前記第二の半導体素子の回路面との間に配置された絶縁層に接続電極が埋設され、前記第一の半導体素子の回路面とは反対側の面と同一の向きの前記第一の絶縁材料の面に外部接続用端子が設けられ、前記接続電極は前記第一の半導体素子の回路面と前記第二の半導体素子の回路面とを導通しており、前記絶縁層の前記接続電極が埋設された領域以外の領域を通る導通部材を介して前記第一の半導体素子と前記外部接続用端子とが導通されている半導体装置、を製造する方法であって、
支持基板上に前記外部接続用端子を形成する工程と、
前記支持基板の前記外部接続用端子を形成する領域とは異なる領域に、前記第一の半導体素子をフェイスアップに設置する工程と、
前記第一の半導体素子の少なくとも側面の一部と前記外部接続用端子とを前記第一の絶縁材料により埋設する工程と、
前記第一の絶縁材料に前記導通部材の少なくとも一部を形成する工程と、
前記第二の半導体素子をフェイスダウンによって前記接続電極を介して前記第一の半導体素子と接続する工程と、
前記第二の半導体素子の少なくとも回路面を前記第二の絶縁材料により被覆する工程と、
前記支持基板を除去する工程と、
を含むことを特徴とする半導体装置の製造方法。 - 前記第一の絶縁材料に前記導通部材の少なくとも一部を形成する工程で、前記接続電極をも形成することを特徴とする、請求項1に記載の半導体装置の製造方法。
- 前記支持基板上に前記外部接続用端子を形成する工程で、前記外部接続用端子を形成する領域とは異なる領域に、金属板を形成することを特徴とする、請求項1に記載の半導体装置の製造方法。
- 前記第一の絶縁材料に前記導通部材の少なくとも一部および前記接続電極を形成する工程の後に、前記導通部材の少なくとも一部と前記第一の半導体素子とを導通するボンディングワイヤを形成することを特徴とする、請求項2に記載の半導体装置の製造方法。
- 少なくとも第一の半導体素子の回路面と第二の半導体素子の回路面とが対向して配置され、前記第一の半導体素子は少なくとも側面の一部が第一の絶縁材料によって埋設され、前記第二の半導体素子は少なくとも前記回路面が第二の絶縁材料によって被覆され、前記第一の半導体素子の回路面と前記第二の半導体素子の回路面との間に配置された絶縁層に接続電極が埋設され、前記第一の半導体素子の回路面とは反対側の面と同一の向きの前記第一の絶縁材料の面に外部接続用端子が設けられ、前記接続電極は前記第一の半導体素子の回路面と前記第二の半導体素子の回路面とを導通しており、前記絶縁層の前記接続電極が埋設された領域以外の領域を通る導通部材を介して前記第一の半導体素子と前記外部接続用端子とが導通されている半導体装置、を製造する方法であって、
支持基板上に前記外部接続用端子および金属板を形成する工程と、
前記金属板上に前記第一の半導体素子をフェイスアップに設置する工程と、
前記第一の半導体素子と前記外部接続用端子とを導通するボンディングワイヤを形成する工程と、
前記第一の半導体素子の少なくとも側面の一部と前記外部接続用端子と前記ボンディングワイヤとを前記第一の絶縁材料により埋設する工程と、
前記第二の半導体素子をフェイスダウンによって前記接続電極を介して前記第一の半導体素子と接続する工程と、
前記第二の半導体素子の少なくとも回路面を前記第二の絶縁材料により被覆する工程と、
前記支持基板を除去する工程と、
を含むことを特徴とする半導体装置の製造方法。 - あらかじめ前記第一の半導体素子の回路面に金属突起を付しておき、前記第一の絶縁材料により埋設する工程の後に、前記金属突起の表面を露出させ、前記第二の半導体素子を前記第一の半導体素子と接続する工程において前記金属突起を前記接続電極として使用することを特徴とする、請求項1、3及び5のいずれか一項に記載の半導体装置の製造方法。
- 前記導通部材は前記第一の絶縁材料をも通ることを特徴とする、請求項1〜6のいずれか一項に記載の半導体装置の製造方法。
- 前記絶縁層は少なくとも前記第一の絶縁材料の一部を含んでなることを特徴とする、請求項1〜7のいずれか一項に記載の半導体装置の製造方法。
- 前記導通部材は、前記第一の絶縁材料と前記第二の絶縁材料との界面に設けられた配線と、前記第一の絶縁材料中に埋設されたビアとを含んでなることを特徴とする、請求項8に記載の半導体装置の製造方法。
- 前記導通部材は前記第一の絶縁材料中に埋設されたボンディングワイヤを含んでなることを特徴とする、請求項8に記載の半導体装置の製造方法。
- 前記導通部材は、前記第一の半導体素子に付された金属突起と、前記第一の絶縁材料と前記第二の絶縁材料との界面に設けられた配線と、前記第一の絶縁材料中に埋設されたビアとを含んでなることを特徴とする、請求項8に記載の半導体装置の製造方法。
- 前記絶縁層は前記第二の絶縁材料の少なくとも一部からなることを特徴とする、請求項1〜7のいずれか一項に記載の半導体装置の製造方法。
- 前記導通部材は、前記第二の絶縁材料中に埋設されたボンディングワイヤと、前記第一の絶縁材料と前記第二の絶縁材料との界面に設けられた配線と、前記第一の絶縁材料中に埋設されたビアとを含んでなることを特徴とする、請求項12に記載の半導体装置の製造方法。
- 前記ビアは金属により充填されていることを特徴とする、請求項9、11および13のいずれか一項に記載の半導体装置の製造方法。
- 前記接続電極は前記第一の半導体素子に付された金属突起からなることを特徴とする、請求項1、3及び5のいずれか一項に記載の半導体装置の製造方法。
- 前記第一の半導体素子の回路面とは反対側の面に金属板が付されていることを特徴とする、請求項1〜15のいずれか一項に記載の半導体装置の製造方法。
- 前記金属板の少なくとも側面の一部が前記第一の絶縁材料中に埋設されていることを特徴とする、請求項16に記載の半導体装置の製造方法。
- 前記金属板が配線層を兼ねることを特徴とする、請求項16〜17のいずれか一項に記載の半導体装置の製造方法。
- 前記各工程は、その記載順に実行されることを特徴とする、請求項1または5に記載の半導体装置の製造方法。
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