KR100870821B1 - 후면 조사 이미지 센서 - Google Patents
후면 조사 이미지 센서 Download PDFInfo
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- KR100870821B1 KR100870821B1 KR1020070065368A KR20070065368A KR100870821B1 KR 100870821 B1 KR100870821 B1 KR 100870821B1 KR 1020070065368 A KR1020070065368 A KR 1020070065368A KR 20070065368 A KR20070065368 A KR 20070065368A KR 100870821 B1 KR100870821 B1 KR 100870821B1
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- photodiode
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- reflecting
- image sensor
- semiconductor substrate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14603—Special geometry or disposition of pixel-elements, address-lines or gate-electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/14625—Optical elements or arrangements associated with the device
- H01L27/14629—Reflectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/14—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation
- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14601—Structural or functional details thereof
- H01L27/1464—Back illuminated imager structures
Abstract
Description
앞서 설명한 본 발명에 따른 리플렉팅 게이트를 갖는 개선된 후면 조사 이미지센서는 상술한 kTC 노이즈 제거를 위해 통상의 상관이중샘플링(CDS: Correlated Double Sampling) 신호 처리 기술이 적용 가능하다.
Claims (11)
- 반도체 기판의 전면의 표면하에 형성되고 상기 반도체기판의 후면으로부터 광을 조사받아 광전하를 생성하는 포토다이오드;상기 반도체 기판의 전면 상부에서 상기 포토다이오드 상부에 형성되고, 후면 조사되는 광을 반사시키면서 상기 포토다이오드의 공핍영역을 컨트롤하기 위한 바이어스를 인가받는 리플렉팅 게이트;상기 포토다이오드로부터 픽셀의 센싱 노드로 광전하를 전달하는 트랜스퍼 게이트를 포함하는 후면 조사 이미지 센서.
- 제1항에 있어서,상기 리플렉팅 게이트는 후면 조사되는 광의 손실을 줄이기 위한 금속실리사이드막 또는 금속막을 포함하는 후면 조사 이미지 센서.
- 제1항에 있어서,상기 포토다이오드로부터 상기 센싱 노드로의 전하운송 효율 및 타이밍 마진을 증대시키기 위해서, 상기 포토다이오드와 상기 트랜스퍼 게이트 사이의 상기 반 도체 기판 표면 하부에 형성된 버퍼영역을 더 포함하는 후면 조사 이미지 센서.
- 제1항 내지 제3항 중 어느한 항에 있어서,상기 리플렉팅 게이트는 네가티브 바이어스를 인가받아 공핍영역의 폭을 컨트롤하는 후면 조사 이미지 센서.
- 제1항에 있어서,제1항 내지 제3항 중 어느한 항에 있어서,상기 포토다이오드는 상기 반도체 기판의 표면에서 발생되는 암전류 개선을 위한 피닝층을 포함하는 후면 조사 이미지 센서.
- 제1항 내지 제3항 중 어느한 항에 있어서,상기 센싱 노드는 플로팅확산영역인 후면 조사 이미지 센서.
- 제1항 내지 제3항 중 어느한 항에 있어서,상기 센싱 노드는 적어도 두개의 포토다이오드를 공유하는 후면 조사 이미지 센서.
- 제1항 내지 제3항 중 어느한 항에 있어서,상기 리플렉팅 게이트에 인가되는 바이어스를 생성하기 위한 네가티브 차지 펌핑회로가 함께 집적화된 후면 조사 이미지 센서.
- 제1항 내지 제3항 중 어느한 항에 있어서,상기 센싱노드의 kTC 노이즈 제거를 위해 상관이중샘플링(CDS) 신호 처리 기술을 사용하는 후면 조사 이미지 센서.
- 제1항 내지 제3항 중 어느 한 항에 있어서,상기 포토다이오드, 상기 리플렉팅 게이트 및 상기 트랜스퍼 게이트는 CMOS 공정 기술에 의해 제조되는 후면 조사 이미지 센서.
- 제1항 또는 제2항에 있어서,상기 리플렉팅 게이트는 절연층을 사이에 두고 상기 트랜스퍼 게이트와 일부 오버랩되는 후면 조사 이미지 센서.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070065368A KR100870821B1 (ko) | 2007-06-29 | 2007-06-29 | 후면 조사 이미지 센서 |
EP08252168A EP2009696A3 (en) | 2007-06-29 | 2008-06-24 | Backside illuminated image sensor |
JP2008167599A JP5358130B2 (ja) | 2007-06-29 | 2008-06-26 | 裏面照射イメージセンサ |
US12/216,065 US7847326B2 (en) | 2007-06-29 | 2008-06-27 | Backside illuminated image sensor |
CN201210151627.8A CN102709299B (zh) | 2007-06-29 | 2008-06-27 | 背照式图像传感器的像素 |
CN2008101275449A CN101335282B (zh) | 2007-06-29 | 2008-06-27 | 背照式图像传感器 |
US12/956,975 US8163591B2 (en) | 2007-06-29 | 2010-11-30 | Backside illuminated image sensor |
JP2013097690A JP5723921B2 (ja) | 2007-06-29 | 2013-05-07 | 裏面照射イメージセンサを動作させる方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020070065368A KR100870821B1 (ko) | 2007-06-29 | 2007-06-29 | 후면 조사 이미지 센서 |
Publications (1)
Publication Number | Publication Date |
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KR100870821B1 true KR100870821B1 (ko) | 2008-11-27 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020070065368A KR100870821B1 (ko) | 2007-06-29 | 2007-06-29 | 후면 조사 이미지 센서 |
Country Status (5)
Country | Link |
---|---|
US (2) | US7847326B2 (ko) |
EP (1) | EP2009696A3 (ko) |
JP (2) | JP5358130B2 (ko) |
KR (1) | KR100870821B1 (ko) |
CN (2) | CN101335282B (ko) |
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JP5358130B2 (ja) | 2013-12-04 |
US20110108709A1 (en) | 2011-05-12 |
JP2009016826A (ja) | 2009-01-22 |
CN102709299B (zh) | 2014-11-05 |
CN101335282A (zh) | 2008-12-31 |
CN101335282B (zh) | 2012-07-04 |
EP2009696A2 (en) | 2008-12-31 |
JP2013179334A (ja) | 2013-09-09 |
JP5723921B2 (ja) | 2015-05-27 |
CN102709299A (zh) | 2012-10-03 |
US8163591B2 (en) | 2012-04-24 |
US20090001494A1 (en) | 2009-01-01 |
EP2009696A3 (en) | 2010-12-29 |
US7847326B2 (en) | 2010-12-07 |
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