KR20210082476A - 광 검출 장치 - Google Patents
광 검출 장치 Download PDFInfo
- Publication number
- KR20210082476A KR20210082476A KR1020217015190A KR20217015190A KR20210082476A KR 20210082476 A KR20210082476 A KR 20210082476A KR 1020217015190 A KR1020217015190 A KR 1020217015190A KR 20217015190 A KR20217015190 A KR 20217015190A KR 20210082476 A KR20210082476 A KR 20210082476A
- Authority
- KR
- South Korea
- Prior art keywords
- layer
- fabry
- interference filter
- perot interference
- metal layer
- Prior art date
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- 238000001514 detection method Methods 0.000 title claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 188
- 239000002184 metal Substances 0.000 claims description 188
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 40
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Abstract
Description
도 2는 도 1의 II-II선에 따른 단면도이다.
도 3은 제1 실시 형태에 따른 분광 센서의 일부 분해 사시도이다.
도 4는 도 3의 IV-IV선에 따른 패브리 페로 간섭 필터의 단면도이다.
도 5는 비교예에 따른 분광 센서에 있어서의 배선 기판의 구조 및 각 부품 간의 전기적 접속 구성을 나타내는 모식도이다.
도 6은 비교예에 따른 분광 센서의 등가 회로를 나타내는 도면이다.
도 7은 비교예에 따른 분광 센서에 있어서의 크로스토크 노이즈를 나타내는 도면이다.
도 8은 제1 실시 형태에 따른 분광 센서에 있어서의 배선 기판의 구조 및 각 부품 간의 전기적 접속 구성을 나타내는 모식도이다.
도 9는 금속층의 변형예를 나타내는 도면이다.
도 10은 금속층의 변형예를 나타내는 도면이다.
도 11은 제2 실시 형태에 따른 분광 센서의 평면도이다.
도 12는 제2 실시 형태에 따른 분광 센서에 있어서의 배선 기판의 구조 및 각 부품 간의 전기적 접속 구성을 나타내는 모식도이다.
도 13은 금속층의 변형예를 나타내는 도면이다.
도 14는 금속층의 변형예를 나타내는 도면이다.
도 15는 제3 실시 형태에 따른 분광 센서에 있어서의 배선 기판의 구조 및 각 부품 간의 전기적 접속 구성을 나타내는 모식도이다.
도 16은 제3 실시 형태에 따른 분광 센서의 배선 기판의 평면도이다.
도 17은 제4 실시 형태에 따른 분광 센서의 평면도이다.
도 18은 제4 실시 형태에 따른 분광 센서에 있어서의 배선 기판의 구조 및 각 부품 간의 전기적 접속 구성을 나타내는 모식도이다.
도 19는 제5 실시 형태에 따른 분광 센서의 평면도이다.
도 20은 제5 실시 형태에 따른 분광 센서에 있어서의 배선 기판의 구조 및 각 부품 간의 전기적 접속 구성을 나타내는 모식도이다.
도 21은 제6 실시 형태에 따른 분광 센서에 있어서의 배선 기판의 구조 및 각 부품 간의 전기적 접속 구성을 나타내는 모식도이다.
도 22는 제6 실시 형태에 따른 분광 센서의 등가 회로를 나타내는 도면이다.
도 23은 실시예(제6 실시 형태) 및 비교예에 있어서의 크로스토크 노이즈의 측정 결과를 나타내는 도면이다.
21…스템(그라운드부)
3, 3B, 3C, 3D, 3F…배선 기판(탑재 기판)
3a…주면 4…광 검출기
6, 6A…스페이서(지지 부재) 10…패브리 페로 간섭 필터
55…제1 미러부 56…제2 미러부
72…실리콘층(제2 층) 73…제2 절연층(제1 층)
74, 74A, 74B, 74C, 74D, 74E, 74F, 74G, 74H, 74I…금속층
74a…면 75, 75B…제3 절연층(절연층)
75a…제1 면 75b…제2 면
75c…개구부 77…접착층(접속 부재)
91…와이어(접속 부재) 91a, 91b, 91c…본딩 패드
92…도전성 수지재(접속 부재) 93…금속막
S…공극
Claims (13)
- 주면을 가지는 탑재 기판과,
상기 탑재 기판의 상기 주면 상에 배치된 광 검출기와,
서로 대향하는 한 쌍의 미러부 사이에 공극이 형성됨으로써, 상기 한 쌍의 미러부 사이의 거리가 정전기력에 의해서 변화하도록 구성된 패브리 페로 간섭 필터와,
상기 탑재 기판의 상기 주면 상에 마련되어, 상기 패브리 페로 간섭 필터와 상기 광 검출기가 이격되도록 상기 패브리 페로 간섭 필터를 지지하는 지지 부재와,
그라운드 전위에 접속된 그라운드부를 구비하고,
상기 패브리 페로 간섭 필터와 상기 그라운드부 사이에는, 상기 지지 부재 및 상기 탑재 기판을 경유하여 상기 패브리 페로 간섭 필터로부터 상기 광 검출기에 이르는 임의의 제1 전류 경로보다도 전기 저항이 작은 제2 전류 경로가 형성되어 있는 광 검출 장치. - 청구항 1에 있어서,
상기 패브리 페로 간섭 필터로부터 상기 지지 부재로 흐르는 전류 성분을 상기 그라운드부로 내보내도록, 상기 지지 부재 또는 상기 탑재 기판과 상기 그라운드부를 전기적으로 접속시키는 도전성의 접속 부재를 더 구비하는 광 검출 장치. - 청구항 2에 있어서,
상기 접속 부재는 상기 탑재 기판의 상기 주면을 따른 영역과 상기 그라운드부를 전기적으로 접속시키고 있고,
상기 제2 전류 경로는 상기 지지 부재, 상기 주면을 따른 영역, 및 상기 접속 부재를 경유하여 상기 패브리 페로 간섭 필터로부터 상기 그라운드부에 이르는 경로인 광 검출 장치. - 청구항 3에 있어서,
상기 탑재 기판은 상기 주면으로서의 제1 면 및 상기 제1 면과는 반대측의 제2 면을 가지는 절연층과, 상기 절연층의 제2 면측에 마련된 금속층을 가지며,
상기 주면을 따른 영역은, 상기 금속층인 광 검출 장치. - 청구항 4에 있어서,
상기 절연층에는, 상기 금속층의 상기 절연층측의 면을 노출시키는 개구부가 형성되어 있고,
상기 접속 부재는 상기 개구부를 통해서 상기 금속층에 접속되는 것과 함께 상기 그라운드부에 접속되어 있는 광 검출 장치. - 청구항 4에 있어서,
상기 금속층은 상기 탑재 기판의 두께 방향에서 보았을 때 상기 탑재 기판의 가장자리부에 적어도 마련되어 있고,
상기 금속층에 있어서의 상기 탑재 기판의 상기 가장자리부에 마련된 부분은, 외부로 노출되어 있고,
상기 접속 부재는 상기 탑재 기판의 상기 가장자리부를 덮도록 마련되어, 상기 금속층의 상기 부분과 상기 그라운드부를 접속시키는 도전성 수지재인 광 검출 장치. - 청구항 4 내지 청구항 6 중 어느 한 항에 있어서,
상기 금속층은, 상기 탑재 기판의 두께 방향에서 볼 때, 상기 탑재 기판에 있어서 상기 지지 부재가 마련된 영역과 중첩되도록 마련되어 있는 광 검출 장치. - 청구항 4 내지 청구항 7 중 어느 한 항에 있어서,
상기 금속층은, 상기 탑재 기판의 두께 방향에서 볼 때, 상기 광 검출기와 중첩되지 않게 마련되어 있는 광 검출 장치. - 청구항 8에 있어서,
상기 금속층은, 상기 탑재 기판의 두께 방향에서 볼 때, 상기 탑재 기판에 있어서 상기 지지 부재가 마련된 영역과 상기 광 검출기 사이의 임의의 전류 경로와 중첩되도록 마련되어 있는 광 검출 장치. - 청구항 3에 있어서,
상기 탑재 기판은 상기 주면으로서의 제1 면을 가지는 절연층과, 상기 절연층의 상기 제1 면과 상기 지지 부재 사이에 마련된 금속층을 가지며,
상기 주면을 따른 영역은, 상기 금속층인 광 검출 장치. - 청구항 2에 있어서,
상기 그라운드부는 상기 탑재 기판의 상기 주면과는 반대측의 면이 고정되는 스템이고,
상기 탑재 기판은 상기 주면으로서의 제1 면 및 상기 제1 면과는 반대측의 제2 면을 가지는 제1 층과, 상기 제1 층의 상기 제2 면측에 마련된 제2 층을 가지며,
상기 접속 부재는 상기 제2 층의 상기 제1 층과는 반대측의 면과 상기 스템 사이에 배치되어, 상기 제2 층의 상기 제1 층과는 반대측의 면과 상기 스템을 전기적으로 접속시키고 있고,
상기 제1 층 및 상기 제2 층을 경유하여 상기 지지 부재로부터 상기 스템으로 향하는 전류 경로의 전기 저항은, 상기 제1 층 및 상기 제2 층 중 적어도 한쪽을 경유하여 상기 지지 부재로부터 상기 광 검출기로 향하는 전류 경로의 전기 저항보다도 작고,
상기 제2 전류 경로는 상기 지지 부재, 상기 제1 층, 상기 제2 층, 및 상기 접속 부재를 경유하여 상기 패브리 페로 간섭 필터로부터 상기 스템에 이르는 경로인 광 검출 장치. - 청구항 2에 있어서,
상기 접속 부재는 상기 지지 부재와 상기 그라운드부를 전기적으로 접속시키고 있고,
상기 제2 전류 경로는 상기 지지 부재 및 상기 접속 부재를 경유하여 상기 패브리 페로 간섭 필터로부터 상기 그라운드부에 이르는 경로인 광 검출 장치. - 청구항 2에 있어서,
상기 지지 부재와 상기 패브리 페로 간섭 필터 사이에 배치되는 금속막을 더 구비하고,
상기 접속 부재는 상기 금속막을 통해서 상기 지지 부재와 상기 그라운드부를 전기적으로 접속시키고 있고,
상기 제2 전류 경로는 상기 금속막 및 상기 접속 부재를 경유하여 상기 패브리 페로 간섭 필터로부터 상기 그라운드부에 이르는 경로인 광 검출 장치.
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