KR101105635B1 - 고체촬상소자 및 그 제조방법 - Google Patents
고체촬상소자 및 그 제조방법 Download PDFInfo
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Abstract
Description
도 2는, 본 실시예의 고체촬상소자에 있어서 화소영역 내의 1개 화소의 레이아웃을 나타내는 개략 평면도.
도 3은, 본 실시예의 고체촬상소자에 있어서의 화소영역 및 기억영역의 개략 구성을 나타내는 평면도.
도 4는, 본 실시예의 고체촬상소자에 있어서의 반도체 칩의 대략 절반의 요부의 블록 구성도.
도 5는, 본 실시예의 고체촬상소자에 있어서의 1개 화소의 회로 구성도.
도 6은, 본 실시예의 고체촬상소자에 있어서 1개 화소에 있어서의 광전변환영역의 레이아웃을 나타내는 개략 평면도.
도 7은, 본 실시예의 고체촬상소자에 있어서의 광전변환영역을 중심으로 하는 요부의 개략 종단면도.
도 8은, 도 6 중의 A-A' 화살표 종단면에 있어서의 개략 포텐셜도.
도 9는, 본 실시예의 고체촬상소자에 있어서 수직방향으로 배열된 132개의 화소에 대응하는 1개의 기억부 유닛의 개략 구성도.
도 10은, 본 실시예의 고체촬상소자에 있어서의 1개의 기억부의 회로 구성도.
도 11은, 본 실시예의 고체촬상소자에 있어서 각 기억부에 유지되어 있는 신호를 출력선을 통하여 읽기 위한 개략 구성을 나타내는 블록도.
도 12는, 본 실시예의 고체촬상소자에 있어서 광전하 축적시간이 짧은 경우의 동작 모드의 타이밍도.
도 13은, 도 12에 나타낸 동작에 있어서의 각 화소 내의 개략 포텐셜도.
도 14는, 본 실시예의 고체촬상소자에 있어서 광전하 축적시간이 상대적으로 긴 경우의 동작 모드의 타이밍도.
도 15는, 도 14에 나타낸 동작에 있어서의 각 화소 내의 개략 포텐셜도.
도 16은, 본 실시예의 고체촬상소자에 있어서의 화소 신호의 축차 읽어낼 때의 동작 타이밍도.
도 17은, 본 실시예의 고체촬상소자에 있어서의 수평 시프트 레지스터의 요부의 동작 타이밍도.
도 18은, 본 실시예의 고체촬상소자에 있어서의 수직 시프트 레지스터의 요부의 동작 타이밍도.
도 19는, 본 실시예의 고체촬상소자에 있어서 포토 다이오드를 형성할 때에 사용하는 포토 마스크의 개략을 나타내는 도면.
도 20은, 본 발명의 다른 실시예에 의한 고체촬상소자에 있어서의 포토 다이오드의 개략 포텐셜도.
도 21은, 일반적인 매립 다이오드를 이용한 화소 구조를 나타내는 평면도.
2, 2a, 2b : 화소영역
10 : 화소
11 : 광전변환영역
12 : 화소회로영역
13 : 배선영역
14, 141 : 화소출력선
15 : 구동라인
31 : 포토 다이오드
32 : 전송 트랜지스터
33, 331, 332 : 플로팅 디퓨전
333 : 금속 배선
34 : 축적 트랜지스터
35 : 리셋 트랜지스터
36 : 축적 커패시터
37, 40 : 트랜지스터
38, 41 : 선택 트랜지스터
39 : 전류원
43 : 소스 폴로어 앰프
60 : n형 실리콘 반도체 기판
61 : p형 웰 영역
62 : n형 반도체 영역
63 : p+형 반도체 영역
Claims (8)
- 복수의 화소가 배치된 고체촬상소자로서,
각 화소는,
빛을 수광하여 광전하를 생성하는 포토 다이오드와,
상기 포토 다이오드의 수광면의 중앙부에 형성된 제1 영역, 및, 상기 제1 영역과 전기적으로 접속되고, 상기 포토 다이오드의 수광면의 외측에 형성된 제2 영역으로 이루어지는 플로팅 영역과,
상기 플로팅 영역의 제1 영역을 둘러싸는 게이트가 설치된 전송 트랜지스터
를 구비하는 것을 특징으로 하는 고체촬상소자. - 청구항 1에 있어서,
상기 포토 다이오드에서 생성된 광전하가 수광면의 중앙측에 모이도록, 상기 수광면의 주변부로부터 중앙부로 향하여 포텐셜을 변화시키도록 한 것을 특징으로 하는 고체촬상소자. - 청구항 2에 있어서,
상기 포토 다이오드의 수광면의 주변부로부터 중앙측으로 향하여, 기판에 주입되는 불순물의 농도 또는 깊이를 경사 형상으로 변화시킨 것을 특징으로 하는 고체촬상소자. - 청구항 2에 있어서,
상기 포토 다이오드의 수광면의 주변부로부터 중앙측으로 향하여, 기판에 주입되는 불순물의 농도 또는 깊이를 계단 형상으로 변화시킨 것을 특징으로 하는 고체촬상소자. - 청구항 2 내지 청구항 4 중 어느 한 항에 기재된 고체촬상소자를 제조하는 방법으로서,
복수의 포토 마스크를 이용하여 불순물 이온의 주입 깊이를 바꿈으로써, 포토 다이오드의 수광면의 주변부로부터 중앙으로 향하여 포텐셜을 변화시키는 것을 특징으로 하는 고체촬상소자의 제조방법. - 청구항 2 내지 청구항 4 중 어느 한 항에 기재된 고체촬상소자를 제조하는 방법으로서,
복수의 포토 마스크를 이용하여 불순물 이온의 주입량을 바꿈으로써, 포토 다이오드의 수광면의 주변부로부터 중앙으로 향하여 포텐셜을 변화시키는 것을 특징으로 하는 고체촬상소자의 제조방법.
- 청구항 2에 있어서,
상기 포토 다이오드의 수광면의 주변부로부터 중앙측으로 향하여, 기판에 주입되는 불순물의 농도 및 깊이를 경사 형상으로 변화시킨 것을 특징으로 하는 고체촬상소자. - 청구항 2에 있어서,
상기 포토 다이오드의 수광면의 주변부로부터 중앙측으로 향하여, 기판에 주입되는 불순물의 농도 및 깊이를 계단 형상으로 변화시킨 것을 특징으로 하는 고체촬상소자.
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JPJP-P-2007-230181 | 2007-09-05 | ||
JP2007230181 | 2007-09-05 | ||
PCT/JP2008/002428 WO2009031304A1 (ja) | 2007-09-05 | 2008-09-04 | 固体撮像素子及びその製造方法 |
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US (1) | US8569805B2 (ko) |
EP (1) | EP2192615A4 (ko) |
JP (1) | JP5115937B2 (ko) |
KR (1) | KR101105635B1 (ko) |
CN (1) | CN101796643B (ko) |
TW (1) | TW200921907A (ko) |
WO (1) | WO2009031304A1 (ko) |
Cited By (3)
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US11011561B2 (en) | 2019-07-01 | 2021-05-18 | SK Hynix Inc. | Pixel and image sensor including the same |
US11011569B2 (en) | 2019-06-25 | 2021-05-18 | SK Hynix Inc. | Image sensor including a plurality of transfer transistors coupled between photodiode and floating diffusion region |
US11029886B2 (en) | 2019-07-24 | 2021-06-08 | SK Hynix Inc. | Memory system and method of operating memory system |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPWO2009031304A1 (ja) | 2010-12-09 |
WO2009031304A1 (ja) | 2009-03-12 |
CN101796643A (zh) | 2010-08-04 |
TW200921907A (en) | 2009-05-16 |
US20100176423A1 (en) | 2010-07-15 |
JP5115937B2 (ja) | 2013-01-09 |
US8569805B2 (en) | 2013-10-29 |
EP2192615A4 (en) | 2011-07-27 |
CN101796643B (zh) | 2013-04-10 |
EP2192615A1 (en) | 2010-06-02 |
KR20100039885A (ko) | 2010-04-16 |
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