KR100749888B1 - 씨모스 이미지 센서들 내에서 암전류를 감소시키기 위한아이솔레이션 기술 - Google Patents
씨모스 이미지 센서들 내에서 암전류를 감소시키기 위한아이솔레이션 기술 Download PDFInfo
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Abstract
Description
Claims (20)
- 인접 영역들 사이에서 이미지 센서 기판 내에 형성된 트렌치;상기 트렌치의 하나 이상의 측벽에 라이닝되는 나이트라이드 라이너;상기 나이트라이드 라이너 상의 옥사이드 라이너; 및상기 트렌치의 바닥표면에서 상기 기판과 접촉하고 상기 트렌치의 일부분 이상을 충진시키는 에피택셜층을 포함하는 것을 특징으로 하는, 반도체 소자 내 구역을 아이솔레이션하기 위한 구조체.
- 제1항에 있어서, 상기 트렌치를 충진시키는 도전성 물질을 더 포함하되, 상기 도전성 물질은, 실리콘, 실리콘-게르마늄 및 폴리실리콘 중 하나를 포함하는 것을 특징으로 하는, 반도체 소자 내 구역을 아이솔레이션하기 위한 구조체.
- 제1항에 있어서, 상기 트렌치는 1000Å 내지 5000Å 의 깊이를 갖는 것을 특징으로 하는, 반도체 소자 내 구역을 아이솔레이션하기 위한 구조체.
- 제1항에 있어서, 상기 트렌치는 2000Å 내지 5000Å 의 깊이을 갖는 것을 특징으로 하는, 반도체 소자 내 구역을 아이솔레이션하기 위한 구조체.
- 제1항에 있어서, 상기 반도체 소자는, 씨모스 이미지 센서를 포함하는 것을 특징으로 하는, 반도체 소자 내 구역을 아이솔레이션하기 위한 구조체.
- 인접 화소들 사이에서 이미지 센서 기판 내에 형성된 트렌치;상기 트렌치의 벽을 따라 형성된 절연 라이너;상기 트렌치의 바닥 표면에서 상기 기판과 접촉하는 에피택셜층; 및상기 에피택셜층 위와 상기 트렌치 내부에 증착되고, 도전성 물질을 포함하는 충진물질을 포함하는 것을 특징으로 하는, 이미지 센서 내 구역을 아이솔레이션하기 위한 구조체.
- 제6항에 있어서, 상기 트렌치 및 상기 절연 라이너의 측벽 사이에서 형성되는 나이트라이드 라이너를 더 포함하는 것을 특징으로 하는, 이미지 센서 내 구역을 아이솔레이션하기 위한 구조체.
- 제6항에 있어서, 상기 절연 라이너는 옥사이드 물질을 포함하는 것을 특징으로 하는, 이미지 센서 내 구역을 아이솔레이션하기 위한 구조체.
- 기판 내에 형성된 제1 도전 타입의 활성층;상기 활성층 내에 형성된 전하 전송 영역;상기 전하 전송 영역에 인접한 상기 활성층 내에 형성된 포토다이오드로서, 상기 제1 도전 타입의 상기 활성층의 영역들 사이에서 제2 도전 타입의 영역을 포함하는 포토다이오드;상기 포토다이오드 영역으로부터 전송되는 전하를 수신하기 위한 상기 활성층 내의 전하 집합 영역;상기 활성층에 인접하여 형성되고, 트렌치를 포함하는 아이솔레이션 영역;상기 트렌치를 부분적으로 충진시키는 에피택셜 물질; 및상기 트렌치 내부와 상기 에피택셜 물질 위에 형성된 도전성 물질을 포함하는 것을 특징으로 하는 이미지 센서.
- 제9항에 있어서, 최소한 상기 트렌치의 측벽들을 따라 형성된 절연 라이너를 포함하는 것을 특징으로 하는 이미지 센서.
- 제9항에 있어서, 상기 도전성 물질은 실리콘을 포함하는 것을 특징으로 하는 이미지 센서.
- 제9항에 있어서, 상기 트렌치는 1000Å 내지 5000Å 의 깊이를 갖는 것을 특징으로 하는 이미지 센서.
- 제9항에 있어서, 상기 트렌치는 2000Å 내지 5000Å 의 깊이를 갖는 것을 특징으로 하는 이미지 센서.
- (ⅰ)프로세서; 및(ⅱ)상기 프로세서와 결합된 반도체 소자를 포함하되,상기 반도체 소자는,인접 영역들 사이에서 기판 내 형성된 트렌치;상기 트렌치의 하나 이상의 측벽에 라이닝되는 나이트라이드 라이너;상기 나이트라이드 라이너 상의 옥사이드 라이너; 및상기 트렌치의 바닥표면에서 상기 기판과 접촉하고 상기 트렌치의 일부분 이 상을 충진시키는 에피택셜층을 포함하는 것을 특징으로 하는 프로세싱 시스템.
- (ⅰ)프로세서; 및(ⅱ)상기 프로세서와 결합된 이미지 센서 디바이스를 포함하되,상기 이미지 센서 디바이스는,기판 내 형성된 제1 도전 타입의 활성층;상기 기판 상에 형성된 전하 전송 영역;상기 전하 전송 영역에 인접하여 형성된 포토다이오드로서, 상기 제1 도전 타입의 상기 활성층의 영역들 사이에 끼워진 제2 도전 타입 영역을 포함하는 포토다이오드;상기 포토다이오드 영역으로부터 전송되는 전하를 수신하기 위한 전하 집합 영역;상기 활성층의 상호 연결된 제1 도전 타입 일부와 인접하여 형성되고, 트렌치를 포함하는 아이솔레이션 영역;상기 트렌치를 부분적으로 충진시키는 에피택셜 물질; 및상기 트렌치 내부와 상기 에피택셜 물질 위에 형성된 도전성 물질을 포함하는 것을 특징으로 하는 프로세싱 시스템.
- 반도체 소자의 영역들을 분리시키기 위해 기판 내에 트렌치를 형성하는 단계;상기 트렌치의 하나 이상의 측벽에 라이닝되는 나이트라이드 라이너를 형성하는 단계;상기 나이트라이드 라이너 상의 옥사이드 라이너를 형성하는 단계; 및상기 트렌치의 바닥표면에서 상기 기판과 접촉하고 상기 트렌치의 일부분 이상을 충진시키는 에피택셜층을 형성하는 단계를 포함하는 것을 특징으로 하는, 반도체 소자 내 구역을 아이솔레이션시키기 위한 구조체를 형성하는 방법.
- 제16항에 있어서, 상기 에피택셜층 상에 도전성 물질을 형성시키는 단계를 더 포함하되, 상기 도전성 물질은, 실리콘, 폴리실리콘, 및 실리콘-게르마늄 중 하나를 포함하는 것을 특징으로 하는, 반도체 소자 내 구역을 아이솔레이션시키기 위한 구조체를 형성하는 방법.
- 제16항에 있어서, 상기 트렌치는 2000Å 내지 5000Å 의 깊이를 갖도록 형성되는 것을 특징으로 하는, 반도체 소자 내 구역을 아이솔레이션시키기 위한 구조체를 형성하는 방법.
- 기판을 형성하는 단계;상기 기판 내에 제1 도전 타입의 활성층을 형성하는 단계;상기 활성층 내에 전하 전송 영역을 형성하는 단계;상기 전하 전송 영역에 인접하는 상기 활성층 내에 포토다이오드를 형성하는 단계로서, 상기 제1 도전 타입의 상기 활성층의 영역들 사이에 제2 도전 타입 영역을 형성하는 단계를 포함하는 포토다이오드 형성 단계;상기 포토다이오드 영역으로부터 전송되는 전하를 수신하기 위해 상기 활성층 내에 전하 집합 영역을 형성하는 단계; 및트렌치를 형성하고, 상기 트렌치를 부분적으로 충진시키는 에피택셜 물질을 형성하고, 상기 에피택셜 물질 위와 상기 트렌치 내에 도전성 물질을 형성함으로써, 상기 활성층에 인접한 아이솔레이션 영역을 형성하는 단계를 포함하는 것을 특징으로 하는 이미지 센서의 형성 방법.
- 제19항에 있어서, 상기 에피택셜 물질 위에 도전성 물질을 형성시키는 단계를 더 포함하되, 상기 도전성 물질은, 실리콘, 폴리실리콘, 및 실리콘-게르마늄 중 하나를 포함하는 것을 특징으로 하는 이미지 센서의 형성 방법.
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US10/291,772 US6888214B2 (en) | 2002-11-12 | 2002-11-12 | Isolation techniques for reducing dark current in CMOS image sensors |
US10/291,728 US6818930B2 (en) | 2002-11-12 | 2002-11-12 | Gated isolation structure for imagers |
US10/291,772 | 2002-11-12 | ||
PCT/US2003/035859 WO2004044989A1 (en) | 2002-11-12 | 2003-11-12 | Grounded gate and isolation techniques for reducing dark current in cmos image sensors |
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JP (2) | JP2006506813A (ko) |
KR (2) | KR100749888B1 (ko) |
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2003
- 2003-11-12 KR KR1020057009339A patent/KR100749888B1/ko active IP Right Grant
- 2003-11-12 AU AU2003295456A patent/AU2003295456A1/en not_active Abandoned
- 2003-11-12 WO PCT/US2003/035859 patent/WO2004044989A1/en active Application Filing
- 2003-11-12 CN CNB2005100965782A patent/CN100405598C/zh not_active Expired - Lifetime
- 2003-11-12 KR KR1020057008510A patent/KR100669645B1/ko active IP Right Grant
- 2003-11-12 EP EP05021614A patent/EP1641045A3/en not_active Ceased
- 2003-11-12 TW TW092131675A patent/TWI248676B/zh not_active IP Right Cessation
- 2003-11-12 JP JP2004552024A patent/JP2006506813A/ja active Pending
- 2003-11-12 EP EP03786643A patent/EP1563544A1/en not_active Ceased
- 2003-11-12 CN CNB2003801081862A patent/CN100477241C/zh not_active Expired - Fee Related
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2005
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Also Published As
Publication number | Publication date |
---|---|
EP1641045A3 (en) | 2006-06-07 |
KR100669645B1 (ko) | 2007-01-16 |
KR20050072485A (ko) | 2005-07-11 |
CN1735969A (zh) | 2006-02-15 |
EP1641045A2 (en) | 2006-03-29 |
EP1563544A1 (en) | 2005-08-17 |
WO2004044989A1 (en) | 2004-05-27 |
JP4422075B2 (ja) | 2010-02-24 |
TWI248676B (en) | 2006-02-01 |
CN100477241C (zh) | 2009-04-08 |
CN1738045A (zh) | 2006-02-22 |
CN100405598C (zh) | 2008-07-23 |
KR20050061608A (ko) | 2005-06-22 |
TW200415785A (en) | 2004-08-16 |
JP2005347762A (ja) | 2005-12-15 |
AU2003295456A1 (en) | 2004-06-03 |
JP2006506813A (ja) | 2006-02-23 |
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