JP2014189015A - 軟磁性熱硬化性接着フィルム、磁性フィルム積層回路基板、および、位置検出装置 - Google Patents
軟磁性熱硬化性接着フィルム、磁性フィルム積層回路基板、および、位置検出装置 Download PDFInfo
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Abstract
【解決手段】軟磁性熱硬化性接着フィルム4は、磁性層2と、磁性層2の一方面に積層される表層1とを備え、磁性層2は、アクリル樹脂、エポキシ樹脂、フェノール樹脂および軟磁性粒子12を含有する磁性組成物12から形成され、表層1は、アクリル樹脂、エポキシ樹脂およびフェノール樹脂を含有し、かつ、軟磁性粒子14を実質的に含有しない表層組成物11から形成されている。
【選択図】図1
Description
(磁性層の作製)
軟磁性粒子が80体積%となるように、軟磁性粒子(Fe−Si−Al合金、扁平状、メイト社製)95質量部、アクリル酸エチル−メタクリル酸メチルを主成分とするアクリル酸エステル系ポリマー(根上工業社製、商品名「パラクロンW−197CM」)50質量部、ビスフェノールA型エポキシ樹脂(JER社製、エピコート1004)20質量部、ビスフェノールA型エポキシ樹脂(JER社製、エピコートYL980)12質量部、フェノールアラルキル樹脂(三井化学社製、ミレックスXLC−4L)18質量部、および、2−フェニル−1H−イミダゾール4、5−ジメタノール(熱硬化触媒、四国化成社製、商品名;キュアゾール2PHZ−PW)0.5質量部を混合することにより、磁性組成物を得た。
次いで、アクリル酸エチル−メタクリル酸メチルを主成分とするアクリル酸エステル系ポリマー(根上工業社製、商品名「パラクロンW−197CM」)80質量部、ビスフェノールA型エポキシ樹脂(JER社製、エピコート1004)8質量部、ビスフェノールA型エポキシ樹脂(JER社製、エピコートYL980)5質量部、フェノールアラルキル樹脂(三井化学社製、ミレックスXLC−4L)7質量部、2−フェニル−1H−イミダゾール4、5−ジメタノール(熱硬化触媒、四国化成社製、商品名;キュアゾール2PHZ−PW)0.5質量部、シリカ(マイクロン社製、商品名;SP10、平均粒子径2.5μm)45質量部を混合することにより、表層組成物を得た。
表1に記載の材料および配合割合で、磁性組成物および表層組成物を得た。これらの磁性組成物および表層組成物を用い、表1の厚みに調整した以外は、実施例1と同様にして、各実施例の軟磁性熱硬化性接着フィルムを製造した。
実施例1にて作製した磁性層を比較例1の軟磁性熱硬化性接着フィルムとした。すなわち、表層を備えていない磁性層を比較例1の軟磁性熱硬化性接着フィルムとした。
・耐リフロー性
ループコイル状の配線パターンが基板の一方面に形成された回路基板(配線の幅100μm、配線の高さ15μm、隙間の間隔(ピッチ間)200μm)に、表層が配線パターンと接触するように、各実施例および比較例の軟磁性熱硬化性接着フィルムを積層し、175℃、30分加熱することにより、軟磁性熱硬化性接着フィルムを熱硬化させて、磁性フィルム積層回路基板を得た。
配線の幅50μm、配線の高さ15μm、隙間の間隔(ピッチ間)50μmで互いに櫛場に組まれた導通していないテスト用配線パターンを用意した。その、そのテスト用配線パターン上に、各実施例および各比較例の軟磁性熱硬化性接着フィルムを、その表層が配線パターンと接触するように積層させた後、175℃、60分にて加熱して、磁性フィルムとした。そして、テスト用配線パターンの両電極間に10Vの電圧をかけ、絶縁抵抗を測定した。
各実施例および各比較例の軟磁性熱硬化性接着フィルムを製造した際に、各表層組成物溶液を磁性層に塗布したときの塗布安定性、および、製造した軟磁性熱硬化性接着フィルムの表面を観察した。なお、比較例1においては、磁性組成物溶液をセパレータに塗布したときの塗布安定性および製造した軟磁性熱硬化性フィルムの表面を観察した。
・Fe−Si−Al合金:商品名「SP−7」、軟磁性粒子、平均粒子径65μm、扁平状、メイト社製
・パラクロンW−197CM:商品名、アクリル酸エチル−メタクリル酸メチルを主成分とするアクリル酸エステル系ポリマー、根上工業社製
・エピコート1004:商品名、ビスフェノールA型エポキシ樹脂、エポキシ当量875〜975g/eq、JER社製、
・エピコートYL980:商品名、ビスフェノールA型エポキシ樹脂、エポキシ当量180〜190g/eq、JER社製
・ミレックスXLC−4L:商品名、フェノールアラルキル樹脂、水酸基当量170g/eq、三井化学社製
・キュアゾール2PHZ−PW:商品名、2−フェニル−1H−イミダゾール4、5−ジメタノール、四国化成社製
・シリカ:商品名「SP10」、溶融シリカ、マイクロン社製、平均粒子径(D50)2.5μm
2 磁性層
4 軟磁性熱硬化性接着フィルム
7 回路基板
8 配線
10 磁性フィルム
11 表層組成物
12 磁性組成物
13 磁性フィルム積層回路基板
Claims (7)
- 磁性層と、前記磁性層の一方面に積層される表層とを備える軟磁性熱硬化性接着フィルムであって、
前記磁性層は、アクリル樹脂、エポキシ樹脂、フェノール樹脂および軟磁性粒子を含有する磁性組成物から形成され、
前記表層は、アクリル樹脂、エポキシ樹脂およびフェノール樹脂を含有し、かつ、軟磁性粒子を実質的に含有しない表層組成物から形成されていることを特徴とする、軟磁性熱硬化性接着フィルム。 - 前記表層組成物におけるアクリル樹脂の含有割合が、前記アクリル樹脂、前記エポキシ樹脂および前記フェノール樹脂からなる樹脂成分100質量部に対して、10質量部以上80質量部以下であることを特徴とする、請求項1に記載の軟磁性熱硬化性接着フィルム。
- 前記表層は、さらに平均粒子径100μm以下の無機粒子を含有し、前記無機粒子の含有割合が、45質量%以下であることを特徴とする、請求項1または2に記載の軟磁性熱硬化性接着フィルム。
- 前記表層の厚みが、15μm以上55μm以下であることを特徴とする、請求項1〜3のいずれか一項に記載の軟磁性熱硬化性接着フィルム。
- 請求項1〜4のいずれか一項に記載の軟磁性熱硬化性接着フィルムを、一方面に配線が設けられている回路基板の一方面に積層し、前記軟磁性熱硬化性接着フィルムを熱硬化することにより得られることを特徴とする、磁性フィルム積層回路基板。
- 前記配線の厚みに対して、前記表層の厚みが、1〜4倍であることを特徴とする、請求項5に記載の磁性フィルム積層回路基板。
- 請求項5または6に記載の磁性フィルム積層回路基板を備えることを特徴とする、位置検出装置。
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| US14/779,845 US20160083626A1 (en) | 2013-03-28 | 2014-01-23 | Soft magnetic thermosetting adhesive film, magnetic film laminate circuit board, and position detection device |
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| PCT/JP2014/051385 WO2014156254A1 (ja) | 2013-03-28 | 2014-01-23 | 軟磁性熱硬化性接着フィルム、磁性フィルム積層回路基板、および、位置検出装置 |
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| EP2980174B1 (en) | 2019-06-05 |
| CN105121576B (zh) | 2018-05-29 |
| TW201437312A (zh) | 2014-10-01 |
| EP2980174A1 (en) | 2016-02-03 |
| EP2980174A4 (en) | 2016-11-09 |
| TWI628255B (zh) | 2018-07-01 |
| CN105121576A (zh) | 2015-12-02 |
| KR102191073B1 (ko) | 2020-12-14 |
| US20160083626A1 (en) | 2016-03-24 |
| WO2014156254A1 (ja) | 2014-10-02 |
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