JP4938238B2 - 固体撮像素子及び固体撮像素子の製造方法 - Google Patents
固体撮像素子及び固体撮像素子の製造方法 Download PDFInfo
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- JP4938238B2 JP4938238B2 JP2005002772A JP2005002772A JP4938238B2 JP 4938238 B2 JP4938238 B2 JP 4938238B2 JP 2005002772 A JP2005002772 A JP 2005002772A JP 2005002772 A JP2005002772 A JP 2005002772A JP 4938238 B2 JP4938238 B2 JP 4938238B2
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- 238000003384 imaging method Methods 0.000 title claims description 42
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 238000009792 diffusion process Methods 0.000 claims description 88
- 239000010410 layer Substances 0.000 claims description 78
- 238000000034 method Methods 0.000 claims description 49
- 230000002265 prevention Effects 0.000 claims description 46
- 229910052751 metal Inorganic materials 0.000 claims description 38
- 239000002184 metal Substances 0.000 claims description 37
- 239000000758 substrate Substances 0.000 claims description 30
- 239000004065 semiconductor Substances 0.000 claims description 21
- 239000011229 interlayer Substances 0.000 claims description 20
- 238000005530 etching Methods 0.000 claims description 17
- 230000008569 process Effects 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 5
- 230000003449 preventive effect Effects 0.000 claims 2
- 238000005429 filling process Methods 0.000 claims 1
- 239000010949 copper Substances 0.000 description 36
- 229910052802 copper Inorganic materials 0.000 description 36
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 35
- 238000006243 chemical reaction Methods 0.000 description 20
- 230000004888 barrier function Effects 0.000 description 15
- 229910052581 Si3N4 Inorganic materials 0.000 description 13
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 12
- 238000005498 polishing Methods 0.000 description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 10
- 229910052710 silicon Inorganic materials 0.000 description 10
- 239000010703 silicon Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 238000000206 photolithography Methods 0.000 description 9
- 230000006866 deterioration Effects 0.000 description 8
- 229910052700 potassium Inorganic materials 0.000 description 7
- 239000011591 potassium Substances 0.000 description 7
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 6
- 230000007547 defect Effects 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 238000002955 isolation Methods 0.000 description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 5
- 229910010271 silicon carbide Inorganic materials 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- OKZIUSOJQLYFSE-UHFFFAOYSA-N difluoroboron Chemical compound F[B]F OKZIUSOJQLYFSE-UHFFFAOYSA-N 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000003109 potassium Chemical class 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 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
-
- 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
-
- 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
- H01L27/14601—Structural or functional details thereof
- H01L27/1463—Pixel isolation 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
- H01L27/14636—Interconnect 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
- H01L27/14643—Photodiode arrays; MOS imagers
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Solid State Image Pick-Up Elements (AREA)
- Light Receiving Elements (AREA)
Description
即ち、第1の配線間絶縁膜111と第1の拡散防止膜113との間及び第2の配線間絶縁膜114と第2の拡散防止膜117との間で、配線材料である銅やバリアメタルをCMP研磨する際に研磨剤として使用されるスラリーに多く含有するカリウムが残留し、このカリウムが酸化膜やシリコン基板の中を拡散することとなる。
そして、拡散したカリウムが光電変換素子の受光部に達すると不純物汚染として白点欠陥等の画質劣化に繋がる。
図1は本発明を適用した固体撮像素子の一例であるCMOS型固体撮像素子を説明するための模式的な断面図である。
2 素子分離膜
3 トランジスタのゲート酸化膜
4 トランジスタのゲート電極
5 サイドウォール
6 高濃度拡散層領域
7 受光部
8 シリコン窒化膜
9 層間絶縁膜
10 第1の接続部
10A バリアメタル層
10B タングステン電極層
11 第1の配線間絶縁膜
12 第1の配線層
12A バリアメタル
12B 銅
13 第2の拡散防止膜
14 第2の配線間絶縁膜
15 第2の接続部
15A バリアメタル
15B 銅
16 第2の配線層
17 第3の拡散防止膜
18 カラーレジスト
19 オンチップレンズ
20 開口部
20A 開口領域
21 CVD酸化膜
30 第1の拡散防止膜
50 開口部
100 CMOS型固体撮像素子
Claims (2)
- 受光部を有する撮像領域が形成された半導体基板と、
前記半導体基板表面に成膜されたストッパー層の上層に形成され、最下層に位置する金属配線層を前記半導体基板に接続する接続部を有する層間絶縁膜と、
最下層に位置する金属配線層に接し、前記金属配線層にCMP処理を施すことによって残留する金属元素の前記半導体基板側への拡散を抑制するように、前記層間絶縁膜上に前記受光部を被覆して形成された拡散防止膜と、
前記拡散防止膜及び前記拡散防止膜上の絶縁膜に設けられた配線溝に導電体を埋め込み、かつCMP処理を施して形成された最下層に位置する金属配線層と、
前記絶縁膜にエッチングによる開口処理及びCVD酸化膜の埋め込み処理を施すことによって形成された、前記受光部に入射光を導く開口部とを備える
固体撮像素子。 - 半導体基板に受光部を有する撮像領域を形成する工程と、
前記半導体基板上にストッパー層を成膜した後、前記ストッパー層の上層に層間絶縁膜を形成する工程と、
前記層間絶縁膜に、最下層に位置する金属配線層を前記半導体基板に接続する接続部を形成する工程と、
前記金属配線層にCMP処理を施すことによって残留する金属元素の前記半導体基板側への拡散を抑制するように、前記層間絶縁膜上に前記受光部を被覆する拡散防止膜を形成する工程と、
前記拡散防止膜上に絶縁膜を成膜し、前記絶縁膜及び前記拡散防止膜に配線溝を設け、前記配線溝に導電体を埋め込み、さらにCMP処理を施すことによって、最下層に位置する金属配線層を形成する工程と、
前記絶縁膜にエッチングによる開口処理及びCVD酸化膜の埋め込み処理を施すことによって、前記受光部に入射光を導く開口部を形成する工程とを備える
固体撮像素子の製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005002772A JP4938238B2 (ja) | 2005-01-07 | 2005-01-07 | 固体撮像素子及び固体撮像素子の製造方法 |
US11/324,862 US7786515B2 (en) | 2005-01-07 | 2006-01-04 | Solid-state imaging device and method of manufacturing the same |
CNB200610005733XA CN100463202C (zh) | 2005-01-07 | 2006-01-06 | 固态成像装置及其制造方法 |
KR1020060001606A KR101217364B1 (ko) | 2005-01-07 | 2006-01-06 | 고체 촬상 소자 및 고체 촬상 소자의 제조 방법 |
US11/830,295 US20070281382A1 (en) | 2005-01-07 | 2007-07-30 | Solid-state imaging device and method of manufacturing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005002772A JP4938238B2 (ja) | 2005-01-07 | 2005-01-07 | 固体撮像素子及び固体撮像素子の製造方法 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009105910A Division JP5212246B2 (ja) | 2009-04-24 | 2009-04-24 | 固体撮像素子及び固体撮像素子の製造方法 |
JP2009214018A Division JP5110060B2 (ja) | 2009-09-16 | 2009-09-16 | 固体撮像素子及び固体撮像素子の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006190891A JP2006190891A (ja) | 2006-07-20 |
JP4938238B2 true JP4938238B2 (ja) | 2012-05-23 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2005002772A Expired - Fee Related JP4938238B2 (ja) | 2005-01-07 | 2005-01-07 | 固体撮像素子及び固体撮像素子の製造方法 |
Country Status (4)
Country | Link |
---|---|
US (2) | US7786515B2 (ja) |
JP (1) | JP4938238B2 (ja) |
KR (1) | KR101217364B1 (ja) |
CN (1) | CN100463202C (ja) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
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US7973271B2 (en) | 2006-12-08 | 2011-07-05 | Sony Corporation | Solid-state image pickup device, method for manufacturing solid-state image pickup device, and camera |
JP4110192B1 (ja) | 2007-02-23 | 2008-07-02 | キヤノン株式会社 | 光電変換装置及び光電変換装置を用いた撮像システム |
JP5159120B2 (ja) * | 2007-02-23 | 2013-03-06 | キヤノン株式会社 | 光電変換装置およびその製造方法 |
JP4725614B2 (ja) * | 2008-01-24 | 2011-07-13 | ソニー株式会社 | 固体撮像装置 |
JP4697258B2 (ja) * | 2008-05-09 | 2011-06-08 | ソニー株式会社 | 固体撮像装置と電子機器 |
JP5627202B2 (ja) * | 2009-06-18 | 2014-11-19 | キヤノン株式会社 | 固体撮像装置及びその製造方法 |
JP5304536B2 (ja) * | 2009-08-24 | 2013-10-02 | ソニー株式会社 | 半導体装置 |
EP3514831B1 (en) | 2009-12-26 | 2021-10-13 | Canon Kabushiki Kaisha | Solid-state image pickup apparatus and image pickup system |
KR101801259B1 (ko) * | 2010-07-21 | 2017-11-27 | 삼성전자주식회사 | 광 유도 구조물, 상기 광 유도 구조물을 포함하는 이미지 센서, 및 상기 이미지 센서를 포함하는 프로세서 베이스드 시스템 |
CN106449676A (zh) * | 2011-07-19 | 2017-02-22 | 索尼公司 | 半导体装置和电子设备 |
CN115191034A (zh) * | 2020-03-31 | 2022-10-14 | 索尼半导体解决方案公司 | 光接收元件和电子设备 |
Family Cites Families (16)
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JP2755176B2 (ja) * | 1994-06-30 | 1998-05-20 | 日本電気株式会社 | 固体撮像素子 |
KR100303774B1 (ko) * | 1998-12-30 | 2001-11-15 | 박종섭 | 개선된 광감도를 갖는 씨모스이미지센서 제조방법 |
JP4066289B2 (ja) * | 1999-01-08 | 2008-03-26 | パイオニア株式会社 | 情報記録方法 |
US6221687B1 (en) * | 1999-12-23 | 2001-04-24 | Tower Semiconductor Ltd. | Color image sensor with embedded microlens array |
JP2001189443A (ja) | 1999-12-28 | 2001-07-10 | Sony Corp | 固体撮像素子及びその製造方法 |
JP4253141B2 (ja) | 2000-08-21 | 2009-04-08 | 株式会社東芝 | 化学機械研磨用スラリおよび半導体装置の製造方法 |
US6809359B2 (en) * | 2001-05-16 | 2004-10-26 | Matsushita Electric Industrial Co., Ltd. | Solid-state imaging device, method for manufacturing the same, and method for driving the same |
JP2002270691A (ja) * | 2002-02-07 | 2002-09-20 | Nec Corp | 配線構造 |
JP4117672B2 (ja) * | 2002-05-01 | 2008-07-16 | ソニー株式会社 | 固体撮像素子及び固体撮像装置、並びにこれらの製造方法 |
CN100456483C (zh) * | 2002-09-20 | 2009-01-28 | 索尼株式会社 | 固态摄像器件及其制作方法 |
US6861686B2 (en) * | 2003-01-16 | 2005-03-01 | Samsung Electronics Co., Ltd. | Structure of a CMOS image sensor and method for fabricating the same |
US7279353B2 (en) * | 2003-04-02 | 2007-10-09 | Micron Technology, Inc. | Passivation planarization |
KR100499174B1 (ko) * | 2003-06-17 | 2005-07-01 | 삼성전자주식회사 | 이미지 소자 |
KR100500573B1 (ko) * | 2003-07-01 | 2005-07-12 | 삼성전자주식회사 | 금속 배선 및 그 제조 방법, 금속 배선을 포함하는 이미지소자 및 그 제조 방법 |
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JP4725092B2 (ja) * | 2004-12-10 | 2011-07-13 | ソニー株式会社 | 固体撮像装置及びその製造方法 |
-
2005
- 2005-01-07 JP JP2005002772A patent/JP4938238B2/ja not_active Expired - Fee Related
-
2006
- 2006-01-04 US US11/324,862 patent/US7786515B2/en not_active Expired - Fee Related
- 2006-01-06 KR KR1020060001606A patent/KR101217364B1/ko not_active IP Right Cessation
- 2006-01-06 CN CNB200610005733XA patent/CN100463202C/zh not_active Expired - Fee Related
-
2007
- 2007-07-30 US US11/830,295 patent/US20070281382A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
CN100463202C (zh) | 2009-02-18 |
US7786515B2 (en) | 2010-08-31 |
KR20060081357A (ko) | 2006-07-12 |
JP2006190891A (ja) | 2006-07-20 |
CN1819251A (zh) | 2006-08-16 |
KR101217364B1 (ko) | 2012-12-31 |
US20060151812A1 (en) | 2006-07-13 |
US20070281382A1 (en) | 2007-12-06 |
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