KR20030058276A - 살리사이드를 이용한 이미지센서 제조 방법 - Google Patents
살리사이드를 이용한 이미지센서 제조 방법 Download PDFInfo
- Publication number
- KR20030058276A KR20030058276A KR1020010088691A KR20010088691A KR20030058276A KR 20030058276 A KR20030058276 A KR 20030058276A KR 1020010088691 A KR1020010088691 A KR 1020010088691A KR 20010088691 A KR20010088691 A KR 20010088691A KR 20030058276 A KR20030058276 A KR 20030058276A
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- South Korea
- Prior art keywords
- gate electrode
- image sensor
- forming
- salicide
- semiconductor layer
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000004065 semiconductor Substances 0.000 claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 claims abstract description 16
- 238000005530 etching Methods 0.000 claims abstract description 11
- 230000009969 flowable effect Effects 0.000 claims abstract description 11
- 239000000758 substrate Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 229910021332 silicide Inorganic materials 0.000 claims description 11
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims description 11
- 125000006850 spacer group Chemical group 0.000 claims description 11
- 229920002120 photoresistant polymer Polymers 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000005380 borophosphosilicate glass Substances 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 150000004767 nitrides Chemical class 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 9
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 9
- 229920005591 polysilicon Polymers 0.000 description 9
- 238000009792 diffusion process Methods 0.000 description 7
- 206010034960 Photophobia Diseases 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 208000013469 light sensitivity Diseases 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 206010010144 Completed suicide Diseases 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001444 catalytic combustion detection Methods 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000036211 photosensitivity Effects 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- H10F39/805—Coatings
- H10F39/8057—Optical shielding
-
- 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
- H10F39/014—Manufacture or treatment of image sensors covered by group H10F39/12 of CMOS image sensors
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- Solid State Image Pick-Up Elements (AREA)
- Electrodes Of Semiconductors (AREA)
Abstract
Description
Claims (10)
- 제1도전형의 반도체층 상에 게이트전극을 형성하는 단계;상기 반도체층 내에 상기 게이트전극에 접하도록 포토다이오드를 형성하는 단계;상기 게이트전극이 형성된 전체 프로파일을 따라 유동성절연막을 형성하는 단계;상기 게이트전극 표면이 노출될 때까지 상기 유동성절연막을 전면식각하는 단계; 및상기 노출된 게이트전극 표면에 살리사이드를 형성하는 단계를 포함하는 이미지센서 제조 방법.
- 제 1 항에 있어서,상기 살리사이드를 형성하는 단계는,적어도 상기 포토다이오드를 덮도록 포토레지스트 패턴을 형성하는 단계;상기 포토레지스트 패턴이 형성된 전체 구조 상부에 실리사이드 형성용 금속을 증착하는 단계; 및열처리를 통해 상기 금속과 상기 게이트전극 표면의 실리콘을 반응시켜 금속실리사이드를 형성하는 단계를 포함하는 것을 특징으로 하는 이미지센서 제조 방법.
- 제 1 항에 있어서,상기 유동성절연막을 1000Å 내지 5000Å의 두께로 형성하는 것을 특징으로 하는 이미지센서 제조 방법.
- 제 2 항에 있어서,상기 금속은 Co 또는 Ti의 실리사이드를 포함하는 것을 특징으로 하는 이미지센서 제조 방법.
- 제 1 항 또는 제 2 항에 있어서,상기 게이트전극은 그 측벽에 형성된 스페이서를 더 포함하며, 상기 포토레지스트 패턴 형성 단계에서 상기 스페이서의 폭과 상기 게이트전극의 길이를 더한 만큼의 공정 마진을 확보하는 것을 특징으로 하는 이미지센서 제조 방법.
- 제 5 항에 있어서,상기 스페이서는 질화막 또는 산화질화막을 포함하는 것을 특징으로 하는 이미지센서 제조 방법.
- 제 1 항에 있어서,상기 유동성절연막은 BPSG막 또는 SOG막을 포함하는 것을 특징으로 하는 이미지센서 제조 방법.
- 제 1 항에 있어서,상기 포토다이오드는,상기 반도체층 하부에 형성된 제2도전형의 제1불순물영역; 및상기 제1불순물영역 상부의 상기 반도체층 표면에 형성된 제1도전형의 제2불순물영역을 포함하는 것을 특징으로 하는 이미지센서 제조 방법.
- 제 1 항에 있어서,상기 반도체층은,제1도전형의 기판; 및상기 기판 상부의 제1도전형의 에피층을 포함하는 것을 특징으로 하는 이미지센서 제조 방법.
- 제 1 항 또는 제 8 항 또는 제 9 항에 있어서,상기 제1도전형은 P형이며, 상기 제2도전형은 N형인 것을 특징으로 하는 이미지센서 제조 방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020010088691A KR100562669B1 (ko) | 2001-12-31 | 2001-12-31 | 살리사이드 공정을 이용한 이미지센서 제조 방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020010088691A KR100562669B1 (ko) | 2001-12-31 | 2001-12-31 | 살리사이드 공정을 이용한 이미지센서 제조 방법 |
Publications (2)
Publication Number | Publication Date |
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KR20030058276A true KR20030058276A (ko) | 2003-07-07 |
KR100562669B1 KR100562669B1 (ko) | 2006-03-20 |
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KR1020010088691A KR100562669B1 (ko) | 2001-12-31 | 2001-12-31 | 살리사이드 공정을 이용한 이미지센서 제조 방법 |
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KR (1) | KR100562669B1 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100853794B1 (ko) * | 2006-09-12 | 2008-08-25 | 동부일렉트로닉스 주식회사 | 언더컷 방지를 위한 이미지 센서의 제조 방법 |
US7772625B2 (en) | 2006-10-10 | 2010-08-10 | Taiwan Semiconductor Manufacturing Co., Ltd. | Image sensor having an RPO layer containing nitrogen |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6023081A (en) * | 1997-11-14 | 2000-02-08 | Motorola, Inc. | Semiconductor image sensor |
KR100498595B1 (ko) * | 1998-06-29 | 2005-09-20 | 매그나칩 반도체 유한회사 | 액티브층에 근접된 광차단막을 갖는 이미지센서 |
KR100291179B1 (ko) * | 1998-06-29 | 2001-07-12 | 박종섭 | 자기정렬된실리사이드층을갖는씨모스이미지센서및그제조방법 |
JP3664939B2 (ja) * | 2000-04-14 | 2005-06-29 | 富士通株式会社 | Cmosイメージセンサ及びその製造方法 |
-
2001
- 2001-12-31 KR KR1020010088691A patent/KR100562669B1/ko not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100853794B1 (ko) * | 2006-09-12 | 2008-08-25 | 동부일렉트로닉스 주식회사 | 언더컷 방지를 위한 이미지 센서의 제조 방법 |
US7772625B2 (en) | 2006-10-10 | 2010-08-10 | Taiwan Semiconductor Manufacturing Co., Ltd. | Image sensor having an RPO layer containing nitrogen |
Also Published As
Publication number | Publication date |
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KR100562669B1 (ko) | 2006-03-20 |
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