JP4610616B2 - ダイスタック型デバイスを提供するための方法及び装置 - Google Patents
ダイスタック型デバイスを提供するための方法及び装置 Download PDFInfo
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Description
本発明の一実施形態の場合、サブパッケージのダイの封入は、ステンシル印刷工程を用いて達成される。封入材料の高さ範囲は、加工性、封入性能、及び熱機械特性を改善するためにステンシル印刷工程及び材料選択を最適化することによって制御される。図4は、本発明の一実施形態による、サブパッケージ相互接続子の上側部分を露出したまま、サブパッケージのダイを封入するための工程を示す。図4に示される工程400は、ステンシルが設けられ、基板上に配置される動作405において開始する。ステンシルとして薄いニッケル板を用いることができ、それをパターニングして、各サブパッケージ相互接続子の上側部分が或る程度まで覆われる。
本発明の一実施形態によれば、2つ以上のサブパッケージを相互接続して、スタック型サブパッケージデバイスが形成される。サブパッケージは、最も上にあるサブパッケージの底側にあるランドパッド又は導電性金属ボールが、スタック内でその下にあるサブパッケージの露出したサブパッケージ相互接続子に対応するように、別のサブパッケージ上に積層される。その後、サブパッケージ間を相互接続するために、リフロー工程、又は他の従来の面実装工程が実施される。リフロー中に、温度が高くなることに起因して、封入材料の粘度が下がる。上側サブパッケージのランドパッドと、下側サブパッケージのサブパッケージ相互接続子との間には濡れ力があるので、サブパッケージ相互接続子の表面上に残される封入材料は押し出されて、サブパッケージ間の相互接続を適当に形成できるようになる。
本発明の実施形態は、積層されたサブパッケージ構成を有するダイスタック型デバイスを製造するための方法及び装置を提供する。具体的なフィーチャ又は工程を含む、本発明の種々の実施形態が記述される。本発明の別の実施形態では、複数のフィーチャ又は工程を変更することができる。たとえば、サブパッケージ相互接続子は、全体として導電性金属ボールとして説明されるが、本発明の別の実施形態によれば、任意の適当な材料又は形状を用いることができる。
Claims (21)
- 装置であって、
上面及び底面を有する基板と、
前記基板の前記上面上に取り付けられる1組の複数のダイであって、前記上面の上方に第1の距離まで延在する、複数のダイと、
前記基板の前記上面上に形成される1つ又は複数の相互接続子であって、前記上面の上方に第2の距離まで延在する、1つ又は複数の相互接続子と、
前記基板の前記上面上に配置され、前記上面の上方に第3の距離まで延在する熱硬化性材料の封入材料であって、前記第3の距離は前記第1の距離よりも長く、且つ前記第2の距離よりも短く、それにより前記複数のダイが封入され、前記1つ又は複数の相互接続子の一部が露出する、封入材料と、
上面及び底面を有する第2の基板と
を備え、
前記1つ又は複数の相互接続子は、それぞれはんだボールであり、
前記第2の基板は、前記第2の基板の前記上面に取り付けられる第2の1組の1つ又は複数のダイと、前記第2の基板の前記底面上に形成される1つ又は複数の導電性エリアとを有し、
前記1つ又は複数の導電性エリアはそれぞれ、前記1つ又は複数のはんだボールをリフローすることにより、前記基板の前記上面上に形成される前記1つ又は複数のはんだボールのうちの対応するはんだボールと電気的に接続され、
前記複数のダイはダイスタック型構成になるように互いに取り付けられ、最も上にあるダイの最も上にある部分が、前記上面の上方に前記第1の距離まで延在する、
装置。 - 前記複数のダイは、関連付けられるワイヤを有し、前記関連付けられるワイヤは前記上面の上方に第4の距離まで延在し、前記第4の距離は前記第3の距離よりも短く、それにより前記関連付けられるワイヤが封入される、請求項1に記載の装置。
- 前記複数のダイのうちの1つ又は複数のダイの前記関連付けられる前記ワイヤは、ワイヤボンドを含む、請求項2に記載の装置。
- 前記複数のダイのうちの1つ又は複数のダイは、論理プロセッサデバイスを有する、請求項1から3のいずれかに記載の装置。
- システムであって、
第1のサブパッケージと、
第2のサブパッケージと
を備え、
前記第2のサブパッケージは前記第1のサブパッケージの上に積層され、且つ電気的に接続され、
前記第1のサブパッケージ及び前記第2のサブパッケージはそれぞれ、
基板であって、前記基板の上面に取り付けられる複数のダイと、前記基板の前記上面上に形成される1つ又は複数のはんだボールである相互接続子とを有する、基板と、
前記複数のダイが封入され、前記1つ又は複数のはんだボールのそれぞれの上側部分が露出するように、前記基板の前記上面上に配置される熱硬化性材料の封入材料と
を含み、
前記複数のダイは、前記上面の上方に第1の距離まで延在し、
前記相互接続子は、前記上面の上方に第2の距離まで延在し、
前記封入材料は、前記上面の上方に第3の距離まで延在し、
前記第3の距離は前記第1の距離よりも長く、且つ前記第2の距離よりも短く、
前記第1のサブパッケージは、前記1つ又は複数のはんだボールをリフローすることにより、前記第2のサブパッケージと電気的に接続され、
前記第2のサブパッケージの前記基板は、底面上に形成される1つ又は複数の導電性エリアを有し、前記1つ又は複数の導電性エリアはそれぞれ、前記第1のサブパッケージの前記基板の前記上面上に形成される前記1つ又は複数のはんだボールのうちの対応するはんだボールに電気的に接続され、
前記複数のダイはダイスタック型構成になるように互いに取り付けられ、最も上にあるダイの最も上にある部分が、前記上面の上方に前記第1の距離まで延在する、
システム。 - 前記第2のサブパッケージの上に順に積層される1つ又は複数の付加的なサブパッケージをさらに備え、
前記1つ又は複数の付加的なサブパッケージはそれぞれ、
基板であって、該基板の上面に取り付けられる1つ又は複数のダイと、該基板の該上面上に形成される1つ又は複数の相互接続子とを有する、基板と、
前記1つ又は複数のダイが封入され、前記1つ又は複数の相互接続子のそれぞれの上側部分が露出するように、前記基板の前記上面上に配置される封入材料と
を含み、
前記1つ又は複数の付加的なサブパッケージがそれぞれ有する前記基板は、底面上に形成される1つ又は複数の導電性エリアを有し、前記1つ又は複数の導電性エリアはそれぞれ、直ぐ下にあるサブパッケージの前記基板の前記上面上に形成される前記1つ又は複数の相互接続子のうちの対応する相互接続子に電気的に接続される、
請求項5に記載のシステム。 - 前記複数のダイは関連付けられるワイヤを有し、前記関連付けられるワイヤは前記封入材料によって完全に封入される、請求項5または6に記載のシステム。
- 前記複数のダイのうちの1つ又は複数のダイの前記関連付けられる前記ワイヤはワイヤボンドを含む、請求項7に記載のシステム。
- 前記熱硬化性材料はエポキシである、請求項5から8のいずれかに記載のシステム。
- 前記複数のダイのうちの1つ又は複数のダイは、論理プロセッサデバイスを実装する、請求項5から9のいずれかに記載のシステム。
- 方法であって、
基板の上面上に1つ又は複数のはんだボールである相互接続子を形成する段階であって、前記基板の前記上面上に第1の距離まで延在する前記1つ又は複数のハンダボールを形成する段階と、
前記基板の前記上面に1組の1つ又は複数のダイを取り付ける段階であって、前記上面の上方に第2の距離まで延在する前記1つ又は複数のダイを取り付ける段階と、
前記基板上にステンシルを配置する段階と、
前記基板の前記上面上に熱硬化性材料の封入材料を塗布し、前記封入材料が前記上面の上方に前記第1の距離よりも短く前記第2の距離よりも長い第3の距離まで延在するようにする段階と、
上面及び前記基板の上の底面を有する第2の基板を積層する段階と、
前記基板の前記上面上に形成される前記1つ又は複数のはんだボールに対してリフロー工程を実施する段階と
を備え、
前記ステンシルは、前記基板の上面上に形成される前記1つ又は複数の相互接続子に対応するパターンを有し、それにより、前記ステンシルは、前記基板の前記上面の上方に前記第2の距離よりも長い距離まで延在する前記1つ又は複数の相互接続子のいずれかの上に形成される封入材料の量を減らし、
前記第2の基板を積層する段階は、前記第2の基板の前記上面に取り付けられる第2の1組の1つ又は複数のダイと、前記第2の基板の前記底面上に形成される1つ又は複数の導電性エリアとを有する前記第2の基板を積層し、
前記1つ又は複数の導電性エリアはそれぞれ、前記基板の前記上面上に形成される前記1つ又は複数のはんだボールのうちの或るはんだボールに対応しており、
前記リフロー工程を実施する段階は、前記基板の前記上面上に形成される各はんだボールと、前記第2の基板の前記底面上に形成される対応する各導電性エリアとの間に電気的接続が形成されるように、前記1つ又は複数のはんだボールに対してリフロー工程を実施する
方法。 - 前記熱硬化性材料はエポキシである、請求項11に記載の方法。
- 方法であって、
基板の上面上に1つ又は複数のはんだボールである相互接続子を形成する段階であって、前記基板の前記上面上に第1の距離まで延在する前記1つ又は複数のハンダボールを形成する段階と、
前記基板の前記上面に1組の1つ又は複数のダイを取り付ける段階であって、前記上面の上方に第2の距離まで延在する前記1つ又は複数のダイを取り付ける段階と、
前記基板の前記上面上に熱硬化性材料の封入材料を塗布し、前記封入材料が前記上面の上方に前記第1の距離よりも短く前記第2の距離よりも長い第3の距離まで延在するようにする段階と、
上面及び前記基板の上の底面を有する第2の基板を積層する段階と、
前記基板の前記上面上に形成される前記1つ又は複数のはんだボールに対してリフロー工程を実施する段階と
を備え、
前記第2の基板を積層する段階は、前記第2の基板の前記上面に取り付けられる第2の1組の1つ又は複数のダイと、前記第2の基板の前記底面上に形成される1つ又は複数の導電性エリアとを有する前記第2の基板を積層し、
前記1つ又は複数の導電性エリアはそれぞれ、前記基板の前記上面上に形成される前記1つ又は複数のはんだボールのうちの或るはんだボールに対応しており、
前記リフロー工程を実施する段階は、前記基板の前記上面上に形成される各はんだボールと、前記第2の基板の前記底面上に形成される対応する各導電性エリアとの間に電気的接続が形成されるように、前記1つ又は複数のはんだボールに対してリフロー工程を実施し、
前記熱硬化性材料はエポキシであり、
前記方法は、
前記基板の前記上面に前記エポキシを塗布する前に、前記エポキシの粘度を低減する段階
をさらに備える方法。 - 前記封入材料を塗布する前に前記基板上にステンシルを配置する段階
をさらに備え、
前記ステンシルは、前記基板の上面上に形成される前記1つ又は複数の相互接続子に対応するパターンを有し、それにより、前記ステンシルは、前記基板の前記上面の上方に前記第2の距離よりも長い距離まで延在する前記1つ又は複数の相互接続子のいずれかの上に形成される封入材料の量を減らす、請求項13に記載の方法。 - 前記エポキシの粘度を低減する段階は、前記エポキシに溶媒を加える段階を含む、請求項13または14に記載の方法。
- 前記封入材料上にスクィージを当てて、前記基板の前記上面の上方に前記第2の距離よりも長い距離まで延在する前記1つ又は複数の相互接続子のいずれかの上に形成される封入材料の量を減らす段階をさらに備える、請求項11から15のいずれかに記載の方法。
- 方法であって、
基板の上面上に1つ又は複数のはんだボールである相互接続子を形成する段階であって、前記基板の前記上面上に第1の距離まで延在する前記1つ又は複数のハンダボールを形成する段階と、
前記基板の前記上面に1組の1つ又は複数のダイを取り付ける段階であって、前記上面の上方に第2の距離まで延在する前記1つ又は複数のダイを取り付ける段階と、
前記基板の前記上面上に熱硬化性材料の封入材料を塗布し、前記封入材料が前記上面の上方に前記第1の距離よりも短く前記第2の距離よりも長い第3の距離まで延在するようにする段階と、
前記封入材料上にスクィージを当てて、前記基板の前記上面の上方に前記第2の距離よりも長い距離まで延在する前記1つ又は複数の相互接続子のいずれかの上に形成される封入材料の量を減らす段階と、
上面及び前記基板の上の底面を有する第2の基板を積層する段階と、
前記基板の前記上面上に形成される前記1つ又は複数のはんだボールに対してリフロー工程を実施する段階と
を備え、
前記第2の基板を積層する段階は、前記第2の基板の前記上面に取り付けられる第2の1組の1つ又は複数のダイと、前記第2の基板の前記底面上に形成される1つ又は複数の導電性エリアとを有する前記第2の基板を積層し、
前記1つ又は複数の導電性エリアはそれぞれ、前記基板の前記上面上に形成される前記1つ又は複数のはんだボールのうちの或るはんだボールに対応しており、
前記リフロー工程を実施する段階は、前記基板の前記上面上に形成される各はんだボールと、前記第2の基板の前記底面上に形成される対応する各導電性エリアとの間に電気的接続が形成されるように、前記1つ又は複数のはんだボールに対してリフロー工程を実施する
方法。 - 前記熱硬化性材料はエポキシである、請求項17に記載の方法。
- 前記1つ又は複数のダイは関連付けられるワイヤを有し、該関連付けられるワイヤは前記封入材料によって完全に封入される、請求項11から18のいずれかに記載の方法。
- 前記1つ又は複数のダイのうちの1つ又は複数のダイの前記関連付けられるワイヤはワイヤボンドを含む、請求項19に記載の方法。
- 前記1つ又は複数のダイのうちの1つ又は複数のダイは、論理プロセッサデバイスを実装する、請求項11から20のいずれかに記載の方法。
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-
2004
- 2004-08-11 US US10/917,142 patent/US7187068B2/en not_active Expired - Lifetime
-
2005
- 2005-07-27 TW TW094125491A patent/TWI296151B/zh active
- 2005-07-29 CN CN2005800269708A patent/CN101002319B/zh not_active Expired - Fee Related
- 2005-07-29 DE DE112005003862.9T patent/DE112005003862B4/de not_active Expired - Fee Related
- 2005-07-29 JP JP2007525653A patent/JP4610616B2/ja not_active Expired - Fee Related
- 2005-07-29 DE DE112005001949.7T patent/DE112005001949B4/de not_active Expired - Fee Related
- 2005-07-29 WO PCT/US2005/027103 patent/WO2006020438A1/en active Application Filing
- 2005-08-24 US US11/212,015 patent/US7867818B2/en active Active
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Also Published As
Publication number | Publication date |
---|---|
DE112005001949T5 (de) | 2007-05-31 |
JP2008510304A (ja) | 2008-04-03 |
CN101002319B (zh) | 2011-08-17 |
TWI296151B (en) | 2008-04-21 |
DE112005001949B4 (de) | 2014-11-27 |
TW200618253A (en) | 2006-06-01 |
US20060033193A1 (en) | 2006-02-16 |
US7867818B2 (en) | 2011-01-11 |
HK1109678A1 (en) | 2008-06-13 |
US7187068B2 (en) | 2007-03-06 |
WO2006020438A1 (en) | 2006-02-23 |
DE112005003862B4 (de) | 2016-07-21 |
DE112005003862A5 (de) | 2014-09-18 |
US20060035409A1 (en) | 2006-02-16 |
CN101002319A (zh) | 2007-07-18 |
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