JP2007318098A - 回路装置および回路装置の製造方法 - Google Patents
回路装置および回路装置の製造方法 Download PDFInfo
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- JP2007318098A JP2007318098A JP2007107649A JP2007107649A JP2007318098A JP 2007318098 A JP2007318098 A JP 2007318098A JP 2007107649 A JP2007107649 A JP 2007107649A JP 2007107649 A JP2007107649 A JP 2007107649A JP 2007318098 A JP2007318098 A JP 2007318098A
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- layer
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- gold plating
- wiring layer
- circuit device
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/24—Reinforcing the conductive pattern
- H05K3/243—Reinforcing the conductive pattern characterised by selective plating, e.g. for finish plating of pads
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Abstract
【解決手段】この回路装置は、配線層3、金めっき層4、絶縁樹脂層5、回路素子6、導電部材7、及び封止樹脂層8を備える。配線層3は、銅からなる配線層3のパッド電極部分においてその表面に金めっき層4が形成される。この部分以外の表面は粗面加工が施される。絶縁樹脂層5は、配線層3を覆うように、パッド電極の形成領域に開口部5aを有するように形成される。回路素子6は所定の領域の絶縁樹脂層5の上に装着される。封止樹脂層8は絶縁樹脂層5の上に形成され、回路素子6およびパッド電極の開口部5aを覆うように全面に形成される。ここで、封止樹脂層8は、パッド電極部分において金めっき層4および配線層3と接するように設けられる。
【選択図】図1
Description
図1は、本発明の第1実施形態に係るパッド電極を備えた回路装置の概略断面図である。また、図2は、図1に示した回路装置のパッド電極部(図1のXで示した断面部分)を拡大した断面図である。図1および図2に基づいて第1実施形態の回路装置について説明する。なお、図2は、後述する図3のA−A’線上の断面図に当たる。
(第1実施形態による回路装置の第1の製造プロセス)
図4および図5は、図1に示した第1実施形態による回路装置の第1の製造プロセスを説明するための断面図である。次に、図1、図4、及び図5を参照して、第1実施形態による回路装置の第1の製造プロセスについて説明する。
第1実施形態による回路装置の第2の製造プロセスについて説明する。第2の製造プロセスの基本的な工程に関して、上述した第1の製造プロセスと同様な工程については説明を適宜省略し、第1の製造プロセスと異なる点を中心に説明を行う。図6および図8は、図1に示した第1実施形態による回路装置の第2の製造プロセスを説明するためのパッド形成領域の平面図である。図7および図9は、それぞれ、図6および図8のA−A’線上の断面図である。なお、図7〜9では、第1実施形態の回路装置におけるパッド電極部の要部が図示されている。
図10は、本発明の第2実施形態に係る回路装置のパッド電極部の断面図である。図11は、図10に示した回路装置のパッド電極部の平面図である。なお、図10は、図11のA−A’線上の断面図である。第2実施形態に係る回路装置が先の第1実施形態と異なる箇所は、封止樹脂層8が配線層3と接する領域8aが、金めっき層4と接する接続領域8bの周囲に設けられていることである。それ以外については、先の第1実施形態と同様である。
図12は、本発明の第3実施形態に係る回路装置のパッド電極部の断面図である。図113は、図12に示した回路装置のパッド電極部の平面図である。なお、図12は、図13のA−A’線上の断面図である。第3実施形態に係る回路装置が第1実施形態と異なる箇所は、封止樹脂層8が配線層3と接する領域8aが、金めっき層4と接する接続領域8bの周囲に設けられており、かつ、配線層3の末端部分が、絶縁樹脂層5と金めっき層4との間の絶縁樹脂層5を被覆していることである。それ以外については、先の第1実施形態と同様である。
上記実施の形態では、回路素子6と配線層3のパッド電極とが金めっき層4を介してワイヤボンディング接続されているが、回路素子6の電極形成面が配線層3のパッド電極と対向し、回路素子6がはんだ等を用いてフリップチップ接続されていてもよい。また、上述したように、回路素子6は、抵抗、キャパシタなどの受動素子であってもよい。さらに、基板には、一例として配線層が2層のビルドアップ基板を用いているが、これに限定されない。
Claims (10)
- 銅からなる配線層とその表面の電気的な接続に供される部分の一部に形成された金めっき層とからなる電極と、
前記電極の全面を被覆する封止樹脂層と、
を備え、
前記封止樹脂層は前記金めっき層および前記配線層と接するように設けられている回路装置。 - 基板と、
前記基板の上に形成された銅からなる配線層と、
前記基板および前記配線層の上に形成され、電極の形成領域に開口部を有する絶縁樹脂層と、
前記開口部内に設けられた配線層の表面の電気的な接続に供される部分に形成された金めっき層と、
前記基板に設けられた回路素子と、
前記回路素子と前記配線層とを前記金めっき層を介して電気的に接続する導電部材と、
前記絶縁樹脂層の上に形成され、前記回路素子および前記電極の形成領域を封止する封止樹脂層と、
を備え、
前記封止樹脂層は、前記金めっき層および前記配線層と接するように設けられている回路装置。 - 前記回路素子が半導体素子であることを特徴とする請求項2に記載の回路装置。
- 前記導電部材を用いて前記半導体素子がワイヤボンディング接続されていることを特徴とする請求項3に記載の回路装置。
- 前記導電部材を用いて前記半導体素子がフリップチップ接続されていることを特徴とする請求項3に記載の回路装置。
- 前記回路素子が受動素子であることを特徴とする請求項2に記載の回路装置。
- 前記封止樹脂層と接する配線層の表面は粗面加工が施されていることを特徴とする請求項1乃至6のいずれか1項に記載の回路装置。
- 前記封止樹脂層が前記配線層と接する領域は、前記金めっき層と接する領域の周囲に設けられている請求項1乃至7のいずれか1項に記載の回路装置。
- 配線基板の主面上に配線層を形成する工程と、
前記配線基板の主面全体に導電層を形成する工程と、
電極形成領域に電極よりも大きさが広い開口を備える第1の絶縁層を前記配線基板の主面全体に形成する工程と、
前記開口に露出した前記導電層を除去し、前記配線層を露出させる工程と、
前記導電層をめっき用の配線として用いて、露出した前記配線層の上に金めっき層を形成する工程と、
前記第1の絶縁層および前記導電層を除去する工程と、
前記金めっき層とその近傍の配線層が露出するような開口を備える第2の絶縁層を前記配線基板の主面全体に形成する工程と、
前記金めっき層に回路素子を電気的に接続する工程と、
を備えることを特徴とする回路素子の製造方法。 - 前記第1の絶縁層および前記導電層を除去する工程において、露出した前記配線層の表面が粗面加工されることを特徴とする請求項9に記載の回路装置の製造方法。
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JP2007107649A JP4503039B2 (ja) | 2006-04-27 | 2007-04-16 | 回路装置 |
CN2007101018784A CN101064294B (zh) | 2006-04-27 | 2007-04-25 | 电路装置及电路装置的制造方法 |
KR1020070040988A KR101061627B1 (ko) | 2006-04-27 | 2007-04-26 | 회로 장치 및 회로 장치의 제조 방법 |
US11/740,669 US7612445B2 (en) | 2006-04-27 | 2007-04-26 | Circuit apparatus and method of fabricating the apparatus |
US12/563,849 US8656581B2 (en) | 2006-04-27 | 2009-09-21 | Method of fabricating a circuit apparatus |
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JP (1) | JP4503039B2 (ja) |
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Also Published As
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US8656581B2 (en) | 2014-02-25 |
JP4503039B2 (ja) | 2010-07-14 |
CN101064294A (zh) | 2007-10-31 |
US7612445B2 (en) | 2009-11-03 |
US20070252249A1 (en) | 2007-11-01 |
KR101061627B1 (ko) | 2011-09-01 |
CN101064294B (zh) | 2011-11-16 |
KR20070105924A (ko) | 2007-10-31 |
US20100005653A1 (en) | 2010-01-14 |
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