JP6572971B2 - 電子装置、及び電子装置の製造方法 - Google Patents
電子装置、及び電子装置の製造方法 Download PDFInfo
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- JP6572971B2 JP6572971B2 JP2017514191A JP2017514191A JP6572971B2 JP 6572971 B2 JP6572971 B2 JP 6572971B2 JP 2017514191 A JP2017514191 A JP 2017514191A JP 2017514191 A JP2017514191 A JP 2017514191A JP 6572971 B2 JP6572971 B2 JP 6572971B2
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- 238000000034 method Methods 0.000 title claims description 33
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- 239000004020 conductor Substances 0.000 claims description 77
- 229910000679 solder Inorganic materials 0.000 claims description 51
- 239000007767 bonding agent Substances 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 28
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- 239000010409 thin film Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- H—ELECTRICITY
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- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
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- H01G4/248—Terminals the terminals embracing or surrounding the capacitive element, e.g. caps
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- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
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- H05K1/16—Printed circuits incorporating printed electric components, e.g. printed resistor, capacitor, inductor
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- H05K2201/10621—Components characterised by their electrical contacts
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- H05K2203/04—Soldering or other types of metallurgic bonding
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Description
〔信頼性評価〕
2 配線基板(基板)
3 電子部品
4 中間接続層
6a、6b 第1、第2の外部電極
9 リジッド基板
10 フレキシブル基板
12 第1の導体部
12a、12b 第1、第2の接続電極
15 ヒューズ部
16〜18 貫通孔
19a、19b 窓部
23a〜23c 第3〜第5の接続電極
24 開口部
25a、25b 金属皮膜
26 第3の導体部
26a、26b 第6、第7の接続電極
29a〜29c はんだ(導電性接合剤)
Claims (14)
- ランド電極を有する基板と、該基板上に実装される電子部品とを備え、前記基板と前記電子部品とが電気的に接続された電子装置において、
中間接続層が、前記基板と前記電子部品との間に介在されると共に、前記中間接続層は、剛性材料を主体としかつ開口部が形成されたリジッド基板と、屈曲性材料を主体とするフレキシブル基板とを有する積層構造とされ、
前記フレキシブル基板の一方の主面に第1の導体部が形成されると共に、該第1の導体部は、互いに電気的に絶縁された第1及び第2の接続電極を有し、
前記リジッド基板の一方の主面には第2の導体部が形成されると共に、該第2の導体部は、互いに電気的に絶縁された第3、第4、及び第5の接続電極を前記第4の接続電極を挟むような形態で有し、
かつ、前記リジッド基板の他方の主面には第3の導体部が形成されると共に、該第3の導体部は、互いに電気的に絶縁された第6及び第7の接続電極を有し、
前記フレキシブル基板は、前記第1の接続電極が、前記開口部の対向位置に狭窄状のヒューズ部を有し、
前記フレキシブル基板と前記リジッド基板とは、前記電子部品と前記第4の接続電極とが前記ヒューズ部を介して直列接続となるようにそれぞれの面内で導電性接合剤を介して接合されていることを特徴とする電子装置。 - 前記フレキシブル基板は、前記ヒューズ部の近傍に窓部が形成されていることを特徴とする請求項1記載の電子装置。
- 前記フレキシブル基板は、前記第1及び第2の接続電極内に貫通孔が形成されると共に、前記導電性接合剤が前記貫通孔に充填され、
前記電子部品と前記フレキシブル基板との接合と、前記フレキシブル基板と前記リジッド基板との接合が同時になされていることを特徴とする請求項1又は請求項2記載の電子装置。 - 金属皮膜が、前記中間接続層の側面に形成されていることを特徴とする請求項1乃至請求項3のいずれかに記載の電子装置。
- 前記フレキシブル基板は、耐熱性樹脂材料を主体としていることを特徴とする請求項1乃至請求項4のいずれかに記載の電子装置。
- 前記フレキシブル基板は、薄層化されていることを特徴とする請求項1乃至請求項5のいずれかに記載の電子装置。
- 前記導電性接合剤は、はんだ系材料で形成されていることを特徴とする請求項1乃至請求項6のいずれかに記載の電子装置。
- 前記電子部品は、前記フレキシブル基板の対向面に配されていることを特徴とする請求項1乃至請求項7のいずれかに記載の電子装置。
- 剛性材料を主体とするリジッド基体と、屈曲性材料を主体とするフレキシブル基体とを準備する基体準備工程と、
前記フレキシブル基体の一方の主面に狭窄状のヒューズ部を有する第1の接続電極と該第1の接続電極と電気的に絶縁された第2の接続電極とを一組とした第1の導体部を形成すると共に、前記第1及び第2の接続電極の内部に貫通孔を形成するフレキシブル基板作製工程と、
前記リジッド基体の一方の主面に互いに電気的に絶縁された第3、第4、及び第5の接続電極を一組とした第2の導体部を前記第4の接続電極を挟むような形態で形成すると共に、前記リジッド基体の他方の主面に互いに電気的に絶縁された第6及び第7の接続電極を一組とした第3の導体部を形成し、さらに前記リジッド基体に開口部を形成するリジッド基板作製工程と、
前記ヒューズ部が前記開口部と対向するように前記フレキシブル基板と前記リジッド基板とを積層した後、導電性接合剤を前記貫通孔に塗布する塗布工程と、
電子部品を前記フレキシブル基板上に配して加熱処理し、前記電子部品と前記フレキシブル基板との接合、及び前記フレキシブル基板と前記リジッド基板との接合を同時に行う加熱工程とを含み、
前記電子部品と前記第4の接続電極とを前記ヒューズ部を介して直列接続することを特徴とする電子装置の製造方法。 - 前記塗布工程は、印刷法を使用して前記導電性接合剤を前記貫通孔に塗布することを特徴とする請求項9記載の電子装置の製造方法。
- 前記フレキシブル基板と前記リジッド基板とが接合された中間接続層を基板上に配し、導電性接合剤を塗布して加熱処理を行い、前記中間接続層を基板実装することを特徴とする請求項9又は請求項10記載の電子装置の製造方法。
- フレキシブル基板作製工程は、前記ヒューズ部の近傍に窓部を形成することを特徴とする請求項9乃至請求項11のいずれかに記載の電子装置の製造方法。
- 前記リジッド基板作製工程は、前記リジッド基体の側面に金属皮膜を形成することを特徴とする請求項9乃至請求項12のいずれかに記載の電子装置の製造方法。
- 前記導電性接合剤は、はんだ系材料であることを特徴とする請求項9乃至請求項13のいずれかに記載の電子装置の製造方法。
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