KR102339942B1 - 전자파 차폐필름 - Google Patents
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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
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
-
- 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
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
-
- 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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/03—Conductive materials
- H05K2201/0332—Structure of the conductor
- H05K2201/0364—Conductor shape
- H05K2201/0382—Continuously deformed conductors
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Structure Of Printed Boards (AREA)
Abstract
Ia=(ΔL*1 2+Δa*1 2+Δb*1 2)0.5 (식 1)
Iv=(ΔL*2 2+Δa*2 2+Δb*2 2)0.5 (식 2)
Description
도 2는, 전자파 차폐필름의 변형예를 나타내는 단면도이다.
도 3은, 일 실시형태에 따른 전자파 차폐필름을 이용한 차폐 배선기판을 나타내는 단면도이다.
도 4는 전자파 차폐필름을 프린트 배선기판에 접착하는 공정을 나타내는 단면도이다.
102 : 프린트 배선기판
103 : 차폐 배선기판
111 : 접착제층
112 : 절연 보호층
113 : 차폐층
115 : 박리 필름
121 : 절연필름
122 : 베이스 부재
123 : 절연성 접착제층
125 : 그라운드 회로
128 : 개구부
Claims (4)
- 절연 보호층과,
상기 절연 보호층의 표면을 피복하는 박리 필름을 구비하고,
상기 박리 필름은, 파장 535㎚에서의 투과율이 20% 이상, 80% 이하이고, 하기 식 1로 표시되는 밀착 확인성 지수 Ia가 11 이상, 이하 식 2에 의해 나타내는 존재 시인성 지수 Iv가 11 이상인, 전자파 차폐필름:
Ia=(ΔL*1 2+Δa*1 2+Δb*1 2)0.5 (식 1)
Iv=(ΔL*2 2+Δa*2 2+Δb*2 2)0.5 (식 2)
단, ΔL*1은 박리 전의 박리 필름 표면의 L*값과 박리 후의 박리 필름 표면의 L*값과의 차이며, Δa*1은 박리 전의 박리 필름 표면의 a*값과 박리 후의 박리 필름 표면의 a*값과의 차이고, Δb*1은 박리 전의 박리 필름 표면의 b*값과 박리 후의 박리 필름 표면의 b*값과의 차이다. ΔL*2는 박리 전의 박리 필름 표면의 L*값과 박리 필름을 박리한 후의 절연 보호층 표면의 L*값과의 차이며, Δa*2는 박리 전의 박리 필름 표면의 a*값과 박리 필름을 박리한 후의 절연 보호층 표면의 a*값과의 차이고, Δb*2는 박리 전의 박리 필름 표면의 b*값과 박리 필름을 박리한 후의 절연 보호층 표면의 b*값과의 차이다. 여기서, 박리 후의 박리 필름 표면이란, 절연 보호층과 접하고 있던 면의 반대쪽 면이다. - 제1항에 있어서,
상기 절연 보호층의 상기 박리 필름의 반대쪽에 형성된 접착제층을 추가로 구비하는, 전자파 차폐필름. - 제2항에 있어서,
상기 절연 보호층과 상기 접착제층 사이에 형성된 차폐층을 추가로 구비하는, 전자파 차폐필름. - 그라운드 회로를 갖는 프린트 배선기판과,
상기 접착제층이 상기 그라운드 회로와 접속되도록 상기 프린트 배선기판의 표면에 접착된, 제2항 또는 제3항에 기재된 전자파 차폐필름을 구비하는, 차폐 배선기판.
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JP2018013784A JP6511550B1 (ja) | 2018-01-30 | 2018-01-30 | 電磁波シールドフィルム |
JPJP-P-2018-013784 | 2018-01-30 | ||
PCT/JP2019/001234 WO2019150969A1 (ja) | 2018-01-30 | 2019-01-17 | 電磁波シールドフィルム |
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US (1) | US11388847B2 (ko) |
JP (1) | JP6511550B1 (ko) |
KR (1) | KR102339942B1 (ko) |
CN (1) | CN111630942B (ko) |
TW (1) | TWI728302B (ko) |
WO (1) | WO2019150969A1 (ko) |
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JP2021052063A (ja) * | 2019-09-24 | 2021-04-01 | 信越ポリマー株式会社 | 電磁波シールド付きカバーレイフィルム及びその製造方法、並びに電磁波シールド付きフレキシブルプリント配線板及びその製造方法 |
TWI812889B (zh) * | 2020-03-03 | 2023-08-21 | 日商拓自達電線股份有限公司 | 電磁波屏蔽膜 |
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JP2004288972A (ja) | 2003-03-24 | 2004-10-14 | Shin Etsu Polymer Co Ltd | 電磁波シールド体及びその製造方法 |
JP2017059708A (ja) | 2015-09-17 | 2017-03-23 | 東洋インキScホールディングス株式会社 | 電磁波シールドシートおよびプリント配線板 |
JP2017071107A (ja) | 2015-10-06 | 2017-04-13 | 帝人フィルムソリューション株式会社 | 艶消し層を有する二軸配向ポリエステルフィルム |
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JP5940279B2 (ja) * | 2011-10-27 | 2016-06-29 | 藤森工業株式会社 | Fpc用電磁波シールド材の製造方法 |
KR101399022B1 (ko) * | 2012-12-27 | 2014-05-27 | 주식회사 아모센스 | 전자파 흡수시트 및 그의 제조방법과 이를 포함하는 전자기기 |
KR102714296B1 (ko) * | 2014-11-19 | 2024-10-07 | 도요보 가부시키가이샤 | 2 축 배향 폴리에스테르 필름 |
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