KR102718982B1 - 이미지 센서 - Google Patents
이미지 센서 Download PDFInfo
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- KR102718982B1 KR102718982B1 KR1020190160961A KR20190160961A KR102718982B1 KR 102718982 B1 KR102718982 B1 KR 102718982B1 KR 1020190160961 A KR1020190160961 A KR 1020190160961A KR 20190160961 A KR20190160961 A KR 20190160961A KR 102718982 B1 KR102718982 B1 KR 102718982B1
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- South Korea
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- lower electrode
- image sensor
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Images
Classifications
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- H01L27/14601—
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
- H10F39/80—Constructional details of image sensors
-
- H01L27/14643—
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
- H10F39/011—Manufacture or treatment of image sensors covered by group H10F39/12
- H10F39/026—Wafer-level processing
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
- H10F39/10—Integrated devices
- H10F39/12—Image sensors
- H10F39/18—Complementary metal-oxide-semiconductor [CMOS] image sensors; Photodiode array image sensors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F39/00—Integrated devices, or assemblies of multiple devices, comprising at least one element covered by group H10F30/00, e.g. radiation detectors comprising photodiode arrays
- H10F39/10—Integrated devices
- H10F39/12—Image sensors
- H10F39/18—Complementary metal-oxide-semiconductor [CMOS] image sensors; Photodiode array image sensors
- H10F39/182—Colour image sensors
-
- H—ELECTRICITY
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Abstract
Description
도 2는 이미지 센서의 액티브 픽셀 영역의 레이아웃도이다.
도 3은 이미지 센서를 나타내는 단면도이다.
도 4는 도 3의 CX1 부분을 나타내는 확대도이다.
도 5는 다양한 하부 전극 물질에 대한 400 내지 800 nm 영역에서의 광 반사도의 시뮬레이션 결과를 나타내는 그래프이다.
도 6은 예시적인 실시예들에 따른 이미지 센서의 리드아웃 회로도이다.
도 7은 예시적인 실시예들에 따른 이미지 센서를 나타내는 단면도이다.
도 8은 예시적인 실시예들에 따른 이미지 센서를 나타내는 단면도이다.
도 9는 예시적인 실시예들에 따른 이미지 센서를 나타내는 단면도이다.
도 10은 예시적인 실시예들에 따른 이미지 센서를 나타내는 단면도이다.
도 11은 예시적인 실시예들에 따른 이미지 센서를 나타내는 단면도이다.
도 12는 도 11의 CX2 부분을 나타내는 확대도이다.
도 13은 예시적인 실시예에 따른 이미지 센서의 구성을 나타내는 블록도이다.
도 14 내지 도 19는 예시적인 실시예들에 따른 이미지 센서의 제조 방법을 나타내는 단면도들이다.
132: 유기 광전 변환층 134: 상부 전극
150: 마이크로 관통 비아 170: 패드층
180: 연결 비아 구조물
Claims (10)
- 제1 면과 이에 반대되는 제2 면을 가지며, 복수의 액티브 픽셀이 배치되는 액티브 픽셀 영역을 포함하는 제1 기판;
상기 제1 기판의 상기 제2 면 상에 배치되며 상기 복수의 액티브 픽셀에 대응되는 복수의 하부 전극 구조물로서, 상기 복수의 하부 전극 구조물은 빛이 스토리지 노드로 투과되는 것을 방지하는, 복수의 하부 전극 구조물;
상기 복수의 하부 전극 구조물 상에 배치되는 상부 전극;
상기 복수의 하부 전극 구조물과 상기 상부 전극 사이에 배치되는 유기 광전 변환층; 및
상기 제1 기판의 상기 제1 면 상에 배치되고, 상기 복수의 액티브 픽셀을 구동하도록 구성되는 구동 회로가 배치되는 제2 기판을 포함하고,
상기 복수의 하부 전극 구조물은,
제1 배리어층,
상기 제1 배리어층 상에 배치되는 반사층, 및
상기 반사층 상에 배치되는 제2 배리어층을 포함하는 것을 특징으로 하는 이미지 센서. - 제1항에 있어서,
상기 상부 전극 상에 배치되는 컬러 필터층; 및
상기 컬러 필터층 상에 배치되는 마이크로렌즈를 더 포함하는 이미지 센서. - 제2항에 있어서,
상기 복수의 액티브 픽셀은 제1 파장 영역의 광을 센싱하는 제1 액티브 픽셀, 제2 파장 영역의 광을 센싱하는 제2 액티브 픽셀, 제3 파장 영역의 광을 센싱하는 제3 액티브 픽셀을 포함하고,
상기 컬러 필터층은,
상기 제1 액티브 픽셀 내에 배치되는 적색 컬러 필터층,
상기 제2 액티브 픽셀 내에 배치되는 녹색 컬러 필터층, 및
상기 제3 액티브 픽셀 내에 배치되는 청색 컬러 필터층을 포함하는 것을 특징으로 하는 이미지 센서. - 제3항에 있어서,
상기 적색 컬러 필터층, 상기 녹색 컬러 필터층, 및 상기 청색 컬러 필터층은 상기 제1 기판의 제1 면으로부터 동일한 레벨에 이격되어 배치되는 것을 특징으로 하는 이미지 센서. - 제3항에 있어서,
상기 제1 배리어층은 상기 제1 기판의 상면에 수직한 제1 방향으로 제1 두께를 갖고,
상기 반사층은 상기 제1 방향으로 상기 제1 두께보다 더 큰 제2 두께를 갖는 것을 특징으로 하는 이미지 센서. - 제5항에 있어서,
상기 제1 액티브 픽셀 내의 상기 반사층의 두께는 상기 제2 액티브 픽셀 내의 상기 반사층의 두께보다 더 큰 것을 특징으로 하는 이미지 센서. - 제1항에 있어서,
상기 제1 기판의 상기 제1 면과 상기 제2 기판 사이에 배치되는 전면 구조물(front side structure); 및
상기 제1 기판을 관통하고, 상기 복수의 하부 전극 구조물 각각을 상기 전면 구조물에 연결시키는 복수의 마이크로 관통 비아;를 더 포함하는 이미지 센서. - 제1항에 있어서,
상기 제1 기판은 패드 영역을 더 포함하고,
상기 패드 영역에서 상기 제1 기판의 상기 제2 면으로부터 상기 제1 기판 내부로 연장되는 딥 트렌치 분리막을 더 포함하고,
상기 복수의 액티브 픽셀 중 인접한 두 개의 액티브 픽셀 사이에는 상기 딥 트렌치 분리막이 형성되지 않는 것을 특징으로 하는 이미지 센서. - 제1항에 있어서,
상기 제1 기판의 상기 제2 면 상에 배치되고, 상기 복수의 하부 전극 구조물 사이의 공간을 채우는 절연 펜스를 더 포함하고,
상기 복수의 하부 전극 구조물 각각은 상기 복수의 액티브 픽셀과 수직 오버랩되는 것을 특징으로 하는 이미지 센서. - 제9항에 있어서,
상기 절연 펜스의 상면은 상기 복수의 하부 전극 구조물의 상면과 동일한 레벨에 배치되는 것을 특징으로 하는 이미지 센서.
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