KR100760137B1 - 이미지센서 및 그의 제조 방법 - Google Patents
이미지센서 및 그의 제조 방법 Download PDFInfo
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- KR100760137B1 KR100760137B1 KR1020050134199A KR20050134199A KR100760137B1 KR 100760137 B1 KR100760137 B1 KR 100760137B1 KR 1020050134199 A KR1020050134199 A KR 1020050134199A KR 20050134199 A KR20050134199 A KR 20050134199A KR 100760137 B1 KR100760137 B1 KR 100760137B1
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- forming
- insulating layer
- trench
- photodiode
- etching
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 32
- 238000005530 etching Methods 0.000 claims abstract description 29
- 239000004065 semiconductor Substances 0.000 claims abstract description 23
- 125000006850 spacer group Chemical group 0.000 claims abstract description 22
- 230000004888 barrier function Effects 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 15
- 238000005468 ion implantation Methods 0.000 claims abstract description 13
- 150000004767 nitrides Chemical class 0.000 claims description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims 2
- 238000001039 wet etching Methods 0.000 claims 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims 1
- 238000000151 deposition Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 47
- 239000011229 interlayer Substances 0.000 description 38
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 238000009792 diffusion process Methods 0.000 description 10
- 229910052710 silicon Inorganic materials 0.000 description 10
- 239000010703 silicon Substances 0.000 description 10
- 239000012535 impurity Substances 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009279 wet oxidation reaction Methods 0.000 description 1
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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
- H01L27/14683—Processes or apparatus peculiar to the manufacture or treatment of these devices or parts thereof
- H01L27/14685—Process for coatings or optical elements
-
- 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
- H01L27/1462—Coatings
-
- 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
-
- 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
- H01L27/14683—Processes or apparatus peculiar to the manufacture or treatment of these devices or parts thereof
- H01L27/14689—MOS based technologies
Abstract
Description
Claims (11)
- 삭제
- 삭제
- 삭제
- 삭제
- 소정 공정이 완료된 반도체기판 상에 식각배리어층을 형성하는 단계;상기 식각배리어층 상에 제1절연층을 형성하는 단계;상기 제1절연층을 선택적으로 식각하여 포토다이오드로 예정된 반도체기판의 일부분을 개방시키는 트렌치를 형성하는 단계;상기 트렌치 아래의 개방된 반도체기판에 이온주입을 통해 포토다이오드를 형성하는 단계;상기 트렌치 바닥의 식각배리어층을 식각하면서 상기 트렌치의 양측벽에 접하는 스페이서를 형성하는 단계;상기 스페이서가 형성된 트렌치 내부를 채우는 제2절연층을 형성하는 단계;상기 스페이서를 선택적으로 제거하여 상기 제1절연층과 상기 제2절연층 사이에 빈 공간을 형성하는 단계;상기 빈 공간의 입구를 막는 제3절연층을 전면에 형성하여 에어웨이브가이드를 형성하는 단계; 및상기 제3절연층의 표면 상에 상기 포토다이오드 상부를 개방시키는 형태의 쉴드메탈을 형성하는 단계를 포함하는 이미지 센서의 제조 방법.
- 제5항에 있어서,상기 제1,2 및 제3절연층은, 상기 제1,2 및 제3절연층을 통과하여 상기 에어웨이브가이드에 빛이 입사될 때 전반사되도록 상기 에어웨이브가이드의 굴절율(n=1)보다 더 큰 물질로 형성하는 것을 특징으로 하는 이미지 센서의 제조 방법.
- 제6항에 있어서,상기 제1,2 및 제3절연층은, 실리콘산화막으로 형성하는 것을 특징으로 하는 이미지 센서의 제조 방법.
- 제5항에 있어서,상기 식각배리어층과 상기 스페이서는, 질화막으로 형성하는 것을 특징으로 하는 이미지센서의 제조 방법.
- 제8항에 있어서,상기 스페이서를 형성하는 단계는,상기 스페이서용 물질로 질화막을 증착한 후 상기 식각배리어층으로 사용된 질화막까지 블랭킷 식각으로 진행하여 형성하는 것을 특징으로 하는 이미지 센서의 제조 방법.
- 제5항 또는 제8항에 있어서,상기 스페이서를 제거하는 단계는,습식식각으로 진행하는 것을 특징으로 하는 이미지센서의 제조 방법.
- 제10항에 있어서,상기 습식식각은, 인산용액을 이용하는 것을 특징으로 하는 이미지 센서의 제조 방법.
Priority Applications (1)
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KR1020050134199A KR100760137B1 (ko) | 2005-12-29 | 2005-12-29 | 이미지센서 및 그의 제조 방법 |
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KR1020050134199A KR100760137B1 (ko) | 2005-12-29 | 2005-12-29 | 이미지센서 및 그의 제조 방법 |
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KR20070071051A KR20070071051A (ko) | 2007-07-04 |
KR100760137B1 true KR100760137B1 (ko) | 2007-09-18 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI425630B (zh) * | 2010-08-06 | 2014-02-01 | Himax Imagimg Inc | 影像感測器 |
US10032819B2 (en) | 2015-01-13 | 2018-07-24 | Samsung Electronics Co., Ltd. | Image sensors and methods of forming the same |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009252983A (ja) * | 2008-04-04 | 2009-10-29 | Canon Inc | 撮像センサー、及び撮像センサーの製造方法 |
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KR20000041459A (ko) * | 1998-12-22 | 2000-07-15 | 김영환 | 집광기로서 경사진 반사층을 갖는 이미지센서 및 그 제조방법 |
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2005
- 2005-12-29 KR KR1020050134199A patent/KR100760137B1/ko active IP Right Grant
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Non-Patent Citations (2)
Title |
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Dun-Nian Yaung et al., "Air-Gap Guard Ring for Pixel Sensitivity and Crosstalk Improvement in Deep Sub-micron CMOS Image Sensor", Electron Device Meeting, 2003, IEDM''03 Technical Digest, IEEE Internat * |
Dun-Nian Yaung et al., "Air-Gap Guard Ring for Pixel Sensitivity and Crosstalk Improvement in Deep Sub-micron CMOS Image Sensor", Electron Device Meeting, 2003, IEDM''03 Technical Digest. * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI425630B (zh) * | 2010-08-06 | 2014-02-01 | Himax Imagimg Inc | 影像感測器 |
US10032819B2 (en) | 2015-01-13 | 2018-07-24 | Samsung Electronics Co., Ltd. | Image sensors and methods of forming the same |
US10418403B2 (en) | 2015-01-13 | 2019-09-17 | Samsung Electronics Co., Ltd. | Image sensors and methods of forming the same |
US10797095B2 (en) | 2015-01-13 | 2020-10-06 | Samsung Electronics Co., Ltd. | Image sensors and methods of forming the same |
US11211420B2 (en) | 2015-01-13 | 2021-12-28 | Samsung Electronics Co., Ltd. | Image sensors and methods of forming the same |
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KR20070071051A (ko) | 2007-07-04 |
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