KR102558230B1 - 전사 필름이 부착된 전자파 차폐 필름, 전사 필름이 부착된 전자파 차폐 필름의 제조 방법 및 차폐 프린트 배선판의 제조 방법 - Google Patents
전사 필름이 부착된 전자파 차폐 필름, 전사 필름이 부착된 전자파 차폐 필름의 제조 방법 및 차폐 프린트 배선판의 제조 방법 Download PDFInfo
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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
- H05K9/0084—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a single continuous metallic layer on an electrically insulating supporting structure, e.g. metal foil, film, plating coating, electro-deposition, vapour-deposition
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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
- 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
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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
- H05K3/28—Applying non-metallic protective coatings
- H05K3/281—Applying non-metallic protective coatings by means of a preformed insulating foil
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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
- H05K9/0088—Electromagnetic shielding materials, e.g. EMI, RFI shielding comprising a plurality of shielding layers; combining different shielding material structure
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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
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/07—Electric details
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Abstract
[해결 수단] 전사 필름과, 상기 전사 필름에 적층된 전자파 차폐 필름으로 이루어지는 전사 필름이 부착된 전자파 차폐 필름으로서, 상기 전자파 차폐 필름은, 상기 전사 필름에 접촉하는 보호층과, 상기 보호층에 적층된 차폐층과, 상기 차폐층에 적층된 접착제층을 포함하고, 상기 전사 필름의 영률은, 2.0GPa 이상인 것을 특징으로 하는 전사 필름이 부착된 전자파 차폐 필름.
Description
[도 2] 본 발명의 제1 실시형태에 관한 차폐 프린트 배선판의 제조 방법의 프린트 배선판 준비 공정의 일례를 모식적으로 나타내는 공정도이다.
[도 3] 본 발명의 제1 실시형태에 관한 차폐 프린트 배선판의 제조 방법의 전사 필름이 부착된 전자파 차폐 필름 준비 공정의 일례를 모식적으로 나타내는 공정도이다.
[도 4] 본 발명의 제1 실시형태에 관한 차폐 프린트 배선판의 제조 방법의 압착 공정의 일례를 모식적으로 나타내는 공정도이다.
[도 5] 본 발명의 제1 실시형태에 관한 차폐 프린트 배선판의 제조 방법의 박리 공정의 일례를 모식적으로 나타내는 공정도이다.
[도 6] 본 발명의 제2 실시형태에 관한 전사 필름이 부착된 전자파 차폐 필름의 일례를 모식적으로 나타내는 단면도이다.
[도 7] 도 7의 (a) 및 도 7의 (b)는, 실시예 1에 관한 평가용 기판의 제작 방법을 모식적으로 나타내는 공정도이다.
[도 8] 접속 저항 시험에 있어서의 실시예 1-1에 관한 평가용 기판의 접속 저항의 측정 방법을 모식적으로 나타내는 모식도이다.
20, 120, 220 : 전사 필름
30, 130, 230 : 전자파 차폐 필름
31, 131, 231 : 보호층
32, 232 : 차폐층
33, 133, 233 : 접착제층
50, 250 : 프린트 배선판
51, 251 : 베이스 필름
52, 252 : 프린트 회로
52a : 그라운드 회로
53, 253 : 커버레이
54, 254 : 구멍
60 : 차폐 프린트 배선판
270 : 저항계
Claims (9)
- 전사(轉寫) 필름; 및
상기 전사 필름에 적층된 전자파 차폐 필름으로 이루어지는 전사 필름이 부착된 전자파 차폐 필름으로서,
상기 전자파 차폐 필름은, 상기 전사 필름에 접촉하는 보호층과, 상기 보호층에 적층된 차폐층과, 상기 차폐층에 적층된 접착제층을 포함하고,
상기 전사 필름의 영률(Young's modulus)은 2.9 GPa 내지 3.6 GPa이고,
상기 접착제층의 접속 저항 값은 845mΩ 내지 2957 mΩ인,
전사 필름이 부착된 전자파 차폐 필름. - 제1항에 있어서,
상기 접착제층은 도전성을 가지는, 전사 필름이 부착된 전자파 차폐 필름. - 제1항에 있어서,
상기 차폐층은 금속층으로 이루어지는, 전사 필름이 부착된 전자파 차폐 필름. - 제1항에 있어서,
상기 차폐층은 도전성 수지로 이루어지는, 전사 필름이 부착된 전자파 차폐 필름. - 전사 필름; 및
상기 전사 필름에 적층된 전자파 차폐 필름으로 이루어지는 전사 필름이 부착된 전자파 차폐 필름으로서,
상기 전자파 차폐 필름은, 상기 전사 필름에 접촉하는 보호층과, 상기 보호층에 적층된 도전성을 가지는 접착제층을 포함하고,
상기 전사 필름의 영률은 2.9 GPa 내지 3.6 GPa이고,
상기 접착제층의 접속 저항 값은 174mΩ 내지 236 mΩ인,
전사 필름이 부착된 전자파 차폐 필름. - 영률이 2.9GPa 내지 3.6 GPa인 전사 필름을 준비하는 전사 필름 준비 공정; 및
상기 전사 필름에 보호층, 차폐층, 및 접착제층을 순차 적층하여 전자파 차폐 필름을 형성하는 전자파 차폐 필름 형성 공정
을 포함하고,
상기 접착제층의 접속 저항 값은 845mΩ 내지 2957 mΩ인, 전사 필름이 부착된 전자파 차폐 필름의 제조 방법.
- 영률이 2.9 GPa 내지 3.6 GPa인 전사 필름을 준비하는 전사 필름 준비 공정; 및
상기 전사 필름에 보호층, 및 도전성 수지로 이루어지고 전자파 차폐 기능을 가지는 접착제층을 순차 적층하여 전자파 차폐 필름을 형성하는 전자파 차폐 필름 형성 공정
을 포함하고,
상기 접착제층의 접속 저항 값은 174mΩ 내지 236 mΩ인, 전사 필름이 부착된 전자파 차폐 필름의 제조 방법. - 베이스 필름과, 상기 베이스 필름 위에 형성된 그라운드 회로를 포함하는 프린트 회로와, 상기 프린트 회로를 덮는 커버레이를 포함하는 프린트 배선판을 준비하는 프린트 배선판 준비 공정;
제1항 내지 제5항 중 어느 한 항에 기재된 전사 필름이 부착된 전자파 차폐 필름을 준비하는 전사 필름이 부착된 전자파 차폐 필름 준비 공정;
상기 전사 필름이 부착된 전자파 차폐 필름의 접착제층을, 상기 프린트 배선판의 상기 커버레이에 접촉하도록 배치하고, 상기 전사 필름이 부착된 전자파 차폐 필름을 상기 프린트 배선판에 압착하는 압착 공정; 및
상기 전사 필름이 부착된 전자파 차폐 필름으로부터 전사 필름을 박리하는 박리 공정
을 포함하고,
상기 접착제층과 접촉하는 상기 커버레이의 표면에는 단차(段差)가 있는,
차폐 프린트 배선판의 제조 방법. - 제8항에 있어서,
상기 단차는 상기 그라운드 회로를 노출시키는 구멍이고,
상기 접착제층은 도전성을 가지는, 차폐 프린트 배선판의 제조 방법.
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