JP2007503713A - 電子モジュールおよびその製造方法 - Google Patents
電子モジュールおよびその製造方法 Download PDFInfo
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- JP2007503713A JP2007503713A JP2006524376A JP2006524376A JP2007503713A JP 2007503713 A JP2007503713 A JP 2007503713A JP 2006524376 A JP2006524376 A JP 2006524376A JP 2006524376 A JP2006524376 A JP 2006524376A JP 2007503713 A JP2007503713 A JP 2007503713A
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Abstract
Description
‐ 構成素子の接続にハンダ付けが必要ではない。その代わりに、構成素子の表面の接続領域と取り付け基部の金属薄膜との間の電気接続を、導電性の接着剤を用いて行う。このことは、構成素子の接続に際して、金属を関連の高温度にして長時間融解状態に保つ必要がないということを意味する。従って、ハンダ付けにより接続を行うよりも、信頼性の高い構造を達成することができる。特に、接続領域が小さい場合、合金の脆弱性が重大な問題を生ぜしめる。好ましい具体例における、ハンダ付けを必要としない解決法は、ハンダ付けを用いる解決法よりも、明らかに小さい構造を達成することが可能である。
‐ 本発明の方法を用いることで、より小さい構造体を製造することが可能であるため、構成素子同士をより近い位置に配置することが可能になる。従って、構成素子間の導電体の長さも短くなり、電気回路の特性が改善される。例えば、エネルギー損失、混信および伝送時間の遅延をかなり低減させることができる。
‐ 本発明の方法は、無鉛の製造処理を可能とし、環境的にやさしいものとなる。
‐ ハンダ付けを用いない製造工程を使用すれば、不所望な金属間化合物が生じる割合が少なくなり、これにより長期に亘る構造の信頼性が改善される。
‐ また、本発明方法により、取り付け基部や、これらに埋め込んだ構成素子を互いに積み重ねることができる為、三次元構造体を製造することができる。
工程Aにおいて、処理の出発材料として適切な導電層4を選択する。この導電層4を支持基部12の表面上に設けた層状シートを出発材料として選択することもできる。この層状シートは、例えば、適切な支持基部12を処理用に準備し、この支持基部12の表面に、導電層4を形成するための適切な導電性薄膜を取り付けることにより製造しうる。
工程Bにおいては、導電層4のうち構成素子6を取り付ける領域に接着剤層5を塗布する。この領域を、取り付け領域と称する。接着剤層5は、例えば、貫通孔3を用いて、整列配置することができる。接着剤層の厚みは、構成素子6を接着剤層5上へ押圧した際に、接着剤が構成素子6と導電層4との間のスペースを適切に満たすように選択する。構成素子6が突出接点部7を有する場合、接着剤層5の厚みは、接着剤層によって構成素子6と導電層4との間のスペースが適切に満たすように、例えば突出接点部7の高さの1.5〜10倍の大きさになるようにするのが好ましい。構成素子6に対し形成した接着剤層5の表面積は、構成素子6の対応する表面積よりも少し大きくなるようにし、これによって前記スペースの充満が不十分となるのを回避するようにすることもできる。
工程Cにおいては、構成素子6を、電子モジュール内の適切な個所に設置する。この設置は、例えば、アセンブリ機構を用いて構成素子6を接着剤層5内に押圧することによって行うことができる。アセンブリ工程においては、整列のために形成し貫通孔3、もしくはその他の使用可能な整列マークを用いて、構成素子6を整列させる。
工程Dにおいては、構成素子6を導電層4に接着するための予備形成凹所が存在する絶縁材料層1を導電層4の頂面上に配置する。この絶縁材料層1は、適切なポリマの基材から形成することができ、この絶縁材料層に、構成素子6の寸法および位置に応じた凹所すなわち空所をある適切な方法を用いて形成する。使用するポリマは、例えば、回路基板産業において既知で広く使われており、ガラス繊維マットや、いわゆるB段階エポキシ樹脂から形成されたプレプレグの基材とすることができる。この工程Dは、接着剤層5が硬化したら、すなわち、構成素子6が絶縁材料層1の設置中に、適所に維持される程度に充分に接着剤層が硬化したら行うのが最も適切である。
工程Eにおいては、パターン化されていない絶縁材料層11を、絶縁材料層1の頂面上に配置し、この絶縁材料層11の頂面上に他の導電層9を配置する。この絶縁材料層11は、絶縁材料層1と同様に、適切なポリマ薄膜、例えば前述したプレプレグの基材から形成することができる。一方、導電層9は、例えば銅薄膜、または目的に適したある種の他の薄膜とすることができる。
工程Fにおいては、(層1および11の)ポリマが、構成素子6を囲む導電層4および9間で一体化した隙間のない層を形成するように、層1、11および9を、熱および圧力を用いて圧縮する。この手段を用いることにより、他の導電層9を極めて平滑で平坦にすることができる。
工程Gにおいては、支持基部12を構造体から剥離、もしくはその他の方法で除去する。この除去は、例えば、機械的に、またはエッチングによって行うことができる。この工程Gは、支持基部12を使用しない実施例からは省略することができること勿論である。
工程Hにおいては、絶縁材料層1の表面上の導電層4および9から所望の導電性パターン14および19を形成する。実施例において単一の導電層4のみが使われる場合、絶縁材料層の一方の面上にだけにパターンを形成する。実施例において他の導電層9を用いる場合であっても、導電性パターンを導電層4のみから形成するようにすることもできる。このような実施例においては、パターン化されていない導電層9は、例えば、電子モジュールの機械的な支持もしくは保護層として、あるいは電磁放射に対する保護層として作用することができる。
図9は、多層電子モジュールを示し、このモジュールは互いの上面上に積層された3つの絶縁材料層1と、この層の構成素子6と、合計で6つの導電性パターン層14および19とを含む。絶縁材料層1は、中間層32を用いて、互いに取り付けられている。これら中間層32は、例えば、取り付け用の絶縁材料層1の相互間に積層されたプレプレグエポキシ樹脂層とすることができる。この積層後に、接点を形成するために、電子モジュールに貫通孔をドリル成形する。接点は、これらの貫通孔内に導電層31を成長させることにより形成する。電子モジュールを貫通する導電層31を用いることで、取り付け用の絶縁材料層1のさまざまな導電性パターン14および19を互いに適切に接続することができ、これにより多層電子モジュールの機能全体を達成する。
Claims (17)
- ‐ 導電層(4)を準備する工程と、
‐ 接点表面を有し、この接点表面上に接点領域(7)が設けられた構成素子(6)を準備する工程と、
‐ 異方導電性接着剤(5)を用いて、前記構成素子(6)をその接点表面側から前記導電層(4)の第1表面に接着させ、前記構成素子(6)の接点領域(7)と前記導電層(4)との間に電気接点が形成されるようにする工程と、
‐ 前記導電層(4)に接着された前記構成素子(6)を囲む絶縁材料層(1)を、前記導電層(4)の第1の表面上に形成する工程と、
‐ 前記導電層(4)から導電性パターン(14)を形成する工程と
を有する電子モジュールの製造方法。 - 請求項1に記載の電子モジュールの製造方法において、少なくとも1つの構成素子(6)を導電層(4)に接着し、接着剤(5)は、構成素子(6)の接続領域以外で実質的に導電層(4)に接着剤が存在しないようにこの導電層(4)上の領域に塗布する電子モジュールの製造方法。
- 請求項1または2に記載の電子モジュールの製造方法において、
‐ 構成素子(6)を整列させるために、導電層(4)上に少なくとも1つの整列マークを形成し、
‐ 構成素子(6)を、少なくとも1つの整列マークに対して整列させて、前記導電層(4)に接着する
電子モジュールの製造方法。 - 請求項3に記載の電子モジュールの製造方法において、少なくとも1つの整列マークを、導電層(4)を貫通している貫通孔(3)とする電子モジュールの製造方法。
- 請求項1〜4のいずれか一項に記載の電子モジュールの製造方法において、導電層(4)の材料の一部を除去して残存する材料が導電性パターン(14)を形成するようにすることにより、導電性パターン(14)を導電層(4)から形成する電子モジュールの製造方法。
- 請求項1〜5のいずれか一項に記載の電子モジュールの製造方法において、前記導電層(4)に支持層(12)を取り付け、前記絶縁材料層(1)の製造後で前記導電性パターン(14)の製造前に前記支持層(12)を取り除く電子モジュールの製造方法。
- 請求項1〜6のいずれか一項に記載の電子モジュールの製造方法において、1つもしくは複数の構成素子(6)のための凹所もしくは空所を形成した絶縁材料層(1)を前記導電層(4)に取り付けることによって構成素子(6)を囲む絶縁材料層(1)を製造する電子モジュールの製造方法。
- 請求項7に記載の電子モジュールの製造方法において、導電層(4)に取り付けられている第1の絶縁材料層(1)に、構成素子(6)を覆う一体化した第2の絶縁材料層(11)を取り付ける電子モジュールの製造方法。
- 請求項1〜8のいずれか一項に記載の電子モジュールの製造方法において、前記導電層(4)の例とは反対側の前記絶縁材料層(1)の面に第2の導電性パターン層(9)を形成する電子モジュールの製造方法。
- 請求項1〜9のいずれか一項に記載の電子モジュールの製造方法において、回路板構造に接続しない分離した構成素子(6)を導電層(4)に接着する電子モジュールの製造方法。
- 請求項1〜10のいずれか一項に記載の電子モジュールの製造方法において、1つよりも多い構成素子(6)を同様にして電子モジュール内に埋め込み、これらの構成素子(6)を互いに電気的に接続し、全体としての機能を達成するようにする電子モジュールの製造方法。
- 請求項1〜11のいずれか一項に記載の電子モジュールの製造方法において、第1のモジュールを少なくとも1つの第2のモジュールと一緒に製造し、製造したこれらのモジュールを互いに重なるように取り付けて互いに整列させ、互いに重なるように取り付けたこれらモジュールにフィードスルー用の孔を形成し、このように形成した孔内に導体(31)を形成して、各モジュール上の電子回路を互いに接続することで、全体としての機能を達成する電子モジュールの製造方法。
- ‐ 第1および第2の表面を有する絶縁材料層(1)と、
‐ この絶縁材料層(1)内に形成されその第1の表面上に開放した少なくとも1つの孔又は凹所と、
‐ この少なくとも1つの孔又は凹所内に入れた少なくとも1つの構成素子(6)であって、この構成素子は前記絶縁材料層(1)の第1の表面に面する側のこの構成素子(6)の面上に接点領域(7)を有し、この構成素子(6)の厚さは絶縁材料層(1)の第1の表面および第2の表面間の方向でこの絶縁材料層(1)の厚さよりも薄くした当該構成素子(6)と、
‐ 前記絶縁材料層(1)の第1の表面上と、前記絶縁材料層(1)内の前記少なくとも1つの孔又は凹所の上部上と、前記構成素子(6)の接点領域(7)の位置とに延在している導電性パターン層(14)と、
‐ 前記絶縁材料層(1)の孔又は凹所内で、前記構成素子の接点領域(7)と前記導電性パターン層(14)との間にある硬化させた異方導電性接着剤(5)であって、この接着剤を介して前記導電性パターン層(14)と前記構成素子の接点領域(7)との間に電気接点を形成する当該異方導電性接着剤(5)と
を有する電子モジュール。 - 請求項13に記載の電子モジュールにおいて、前記導電性パターン層(14)がほぼ平坦であり、絶縁材料層(1)と構成素子(6)に対するこの絶縁材料層(1)内の孔又は凹所とに対接して位置する前記導電性パターン層(14)の表面が、ほぼ完全に絶縁材料層(1)の第1の表面のレベル位置にあることを特徴とする電子モジュール。
- 請求項13または14に記載の電子モジュールにおいて、この電子モジュールが、前記絶縁材料層(1)の第2の表面上に延在する他の導電性パターン層(19)を有していることを特徴とする電子モジュール。
- 請求項13〜15のいずれか一項に記載の電子モジュールにおいて、この電子モジュールが、前記導電性パターン(14,19)によって電気的に相互接続されて全体として機能を達成するようにした複数個の構成素子(6)を有していることを特徴とする電子モジュール。
- 請求項13〜16のいずれか一項に記載の電子モジュールにおいて、硬化させた前記異方導電性接着剤(5)が、前記絶縁材料層(1)内の孔又は凹所内で前記構成素子(6)と前記導電性パターン層(14)との間にあるスペースを完全に埋めていることを特徴とする電子モジュール。
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FI115285B (fi) * | 2002-01-31 | 2005-03-31 | Imbera Electronics Oy | Menetelmä komponentin upottamiseksi alustaan ja kontaktin muodostamiseksi |
FI20031341A (fi) * | 2003-09-18 | 2005-03-19 | Imbera Electronics Oy | Menetelmä elektroniikkamoduulin valmistamiseksi |
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2003
- 2003-08-26 FI FI20031201A patent/FI20031201A/fi unknown
-
2004
- 2004-08-10 WO PCT/FI2004/000474 patent/WO2005020651A1/en active Application Filing
- 2004-08-10 JP JP2006524376A patent/JP4510020B2/ja active Active
- 2004-08-10 US US10/569,413 patent/US20070131349A1/en not_active Abandoned
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JPH09270583A (ja) * | 1996-03-29 | 1997-10-14 | Hitachi Aic Inc | 多層プリント配線板 |
JP2002305364A (ja) * | 1997-11-25 | 2002-10-18 | Matsushita Electric Ind Co Ltd | 回路部品内蔵モジュールおよびその製造方法 |
JP2002305381A (ja) * | 2001-04-05 | 2002-10-18 | Ibiden Co Ltd | プリント配線板及びその製造方法 |
JP2003209357A (ja) * | 2002-01-15 | 2003-07-25 | Sony Corp | 多層基板製造方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2007019267A (ja) * | 2005-07-07 | 2007-01-25 | Toshiba Corp | 配線基板、およびこの配線基板を備えた電子機器 |
JP2010538478A (ja) * | 2007-09-25 | 2010-12-09 | インテル・コーポレーション | 高密度blbu層および低密度またはコアレス基板を備えたicパッケージ |
US9941245B2 (en) | 2007-09-25 | 2018-04-10 | Intel Corporation | Integrated circuit packages including high density bump-less build up layers and a lesser density core or coreless substrate |
Also Published As
Publication number | Publication date |
---|---|
FI20031201A (fi) | 2005-02-27 |
US20070131349A1 (en) | 2007-06-14 |
WO2005020651A1 (en) | 2005-03-03 |
JP4510020B2 (ja) | 2010-07-21 |
FI20031201A0 (fi) | 2003-08-26 |
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