KR102373931B1 - 전자파 차폐구조 - Google Patents
전자파 차폐구조 Download PDFInfo
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- KR102373931B1 KR102373931B1 KR1020170115357A KR20170115357A KR102373931B1 KR 102373931 B1 KR102373931 B1 KR 102373931B1 KR 1020170115357 A KR1020170115357 A KR 1020170115357A KR 20170115357 A KR20170115357 A KR 20170115357A KR 102373931 B1 KR102373931 B1 KR 102373931B1
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Abstract
Description
도 2는 본 발명의 일 실시예에 따른 전자파 차폐구조의 제작 공정을 나타내는 단면도이다.
도 3은 도 2에 도시된 차폐 패드를 형성하기 위한 소재 토출 장치를 나타내는 블럭도이다.
도 4는 소재 토출 장치의 노즐이 이동하는 경로의 일 예를 나타내는 도면이다.
도 5는 노즐이 미리 설정된 경로를 따라 이동하면서 인쇄회로기판 상에서 차폐 패드를 형성하는 예를 나타내는 도면이다.
도 6은 도 5에 도시된 노즐의 단부를 나타내는 확대 사시도이다.
도 7은 도 1에 도시된 전자파 차폐구조에 추가로 열전달 부재가 형성된 실시예를 나타내는 단면도이다.
도 8은 도 1에 도시된 전자파 차폐구조에 언더필(under-fill)이 추가로 형성된 실시예를 나타내는 단면도이다.
도 9는 도 1에 도시된 전자파 차폐구조에 추가로 열전달 부재 및 언더필이 형성된 실시예를 나타내는 단면도이다.
도 10은 도 1에 도시된 전자파 차폐구조에 추가로 언더필 및 언더필이 차폐 패드로 혼입되는 것을 차단하는 절연댐이 형성된 실시예를 나타내는 단면도이다.
도 11은 전자파 차폐구조에 절연댐을 형성하는 경우, 절연댐이 차폐 패드에 오버랩 되지 않고 차폐 패드를 따라 나란하게 형성된 예를 보여주는 일부 단면도이다.
도 12a는 전자파 차폐구조에 절연댐을 형성하는 경우, 절연댐이 차폐 패드에 인접하여 배치된 수동소자와 차폐 패드 사이에 형성된 예를 보여주는 일부 단면도이다.
도 12b는 도 12a에 도시된 노즐을 나타내는 사시도이다.
도 12c는 전자파 차폐구조에 절연댐을 형성하는 경우, 절연댐이 차폐 패드에 인접하여 배치된 수동소자에 오버랩 된 상태로 형성된 예를 보여주는 일부 단면도이다.
도 12d는 도 12c에 도시된 노즐을 나타내는 사시도이다.
도 13은 도 1에 도시된 전자파 차폐구조에 열전달 부재, 언더필 및 절연댐이 형성된 실시예를 나타내는 단면도이다.
도 14는 차폐 패드 상에 배치된 쉴드 캔의 고정력을 높이기 위해 고정력 보강 부재를 통해 차폐 패드와 쉴드 캔의 하부 외측을 덮는 예를 나타내는 단면도이다.
도 15 및 도 16은 고정력 보강 부재가 쉴드 캔의 하부 외측을 따라 간헐적으로 형성된 예를 각각 나타내는 평면도들이다.
도 17은 고정력 보강 부재가 쉴드 캔의 하부 외측을 따라 연속적으로 형성된 예를 나타내는 평면도이다.
도 18 내지 도 21은 고정력 보강 부재를 토출하는 노즐의 단부를 나타내는 다양한 예들을 나타내는 도면이다.
도 22는 쉴드 캔의 측벽 하단부가 일직선으로 형성된 예를 나타내는 사시도이다.
114: 접지 패드
120: 차폐 패드
140: 쉴드 캔
151: 열전달 부재
153: 언더 필
155: 절연 댐
170: 고정력 보강 부재
Claims (18)
- 인쇄회로기판에 실장된 적어도 하나의 회로 소자를 둘러싸며, 인쇄회로기판에 형성된 접지 패드에 접지되는 차폐 패드;
상판과, 상판으로부터 연장되며 상기 차폐 패드에 적어도 일부가 매립되는 측벽을 구비한 쉴드 캔; 및
상기 쉴드 캔의 측벽과, 상기 쉴드 캔의 외부에 배치된 상기 차폐 패드의 일부와, 상기 인쇄회로기판의 상면의 일부를 함께 덮는 고정력 보강 부재;를 포함하는, 전자파 차폐구조. - 제1항에 있어서,
상기 적어도 하나의 회로 소자의 상면에 형성되어 상기 쉴드 캔의 상판과 접촉하는 열전달 부재를 더 포함하는, 전자파 차폐구조. - 제1항 또는 제2항에 있어서,
상기 적어도 하나의 회로 소자와 상기 인쇄회로기판 사이에 형성되는 언더필을 더 포함하는, 전자파 차폐구조. - 제3항에 있어서,
상기 차폐 패드를 이루는 도전성 소재는 부가경화형(addition cure type) 실리콘 계이고,
상기 언더필을 이루는 절연 소재는 실리콘 계인, 전자파 차폐구조. - 제3항에 있어서,
상기 차폐 패드를 이루는 도전성 소재는 에폭시 계, 우레탄 계 및 아크릴 계 중 어느 하나이고,
상기 언더필을 이루는 절연 소재는 에폭시 계인, 전자파 차폐구조. - 제3항에 있어서,
상기 차폐 패드를 이루는 도전성 소재는 에폭시 계, 우레탄 계 및 아크릴 계 중 어느 하나이고,
상기 언더필을 이루는 절연 소재는 실리콘 계인, 전자파 차폐구조. - 제3항에 있어서,
상기 차폐 패드와 상기 언더필 사이에 형성되는 절연 댐을 더 포함하는, 전자파 차폐구조. - 제7항에 있어서,
상기 절연 댐은 상기 차폐 패드에 일부가 오버랩되는, 전자파 차폐구조. - 제7항에 있어서,
상기 절연 댐은 상기 차폐 패드를 따라 나란히 형성되는, 전자파 차폐구조. - 제7항에 있어서,
상기 차폐 패드를 이루는 도전성 소재는 부가경화형 실리콘 계이고,
상기 언더필을 이루는 절연 소재는 에폭시 계이고,
상기 절연 댐을 이루는 절연 소재는 부가경화형 실리콘 계인, 전자파 차폐구조. - 제7항에 있어서,
상기 차폐 패드를 이루는 도전성 소재는 에폭시 계, 우레탄 계 및 아크릴 계 중 어느 하나이고,
상기 언더필을 이루는 절연 소재는 에폭시 계인, 전자파 차폐구조. - 제7항에 있어서,
상기 차폐 패드를 이루는 도전성 소재는 에폭시 계, 우레탄 계 및 아크릴 계 중 어느 하나이고,
상기 언더필을 이루는 절연 소재는 실리콘 계인, 전자파 차폐구조. - 삭제
- 제1항에 있어서,
상기 고정력 보강 부재는 차폐 소재 또는 절연 소재로 이루어지는, 전자파 차폐구조. - 제1항에 있어서,
상기 고정력 보강 부재는 상기 쉴드 캔의 적어도 하나의 코너에 형성되는, 전자파 차폐구조. - 제1항에 있어서,
상기 고정력 보강 부재는 상기 쉴드 캔의 측벽을 따라 간격을 두고 형성되는, 전자파 차폐구조. - 제1항에 있어서,
상기 고정력 보강 부재는 상기 쉴드 캔의 측벽을 따라 연속적으로 형성되는, 전자파 차폐구조. - 제1항에 있어서,
상기 쉴드 캔의 측벽의 하단부는 일직선 형태로 이루어지는, 전자파 차폐구조.
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PCT/KR2018/010501 WO2019050333A1 (en) | 2017-09-08 | 2018-09-07 | PROTECTIVE STRUCTURE AGAINST ELECTROMAGNETIC INTERFERENCE |
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