JP2006191007A - Cmosイメージセンサおよびその製造方法 - Google Patents
Cmosイメージセンサおよびその製造方法 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 64
- 239000002184 metal Substances 0.000 claims abstract description 64
- 239000004065 semiconductor Substances 0.000 claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 42
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- 238000002955 isolation Methods 0.000 claims description 6
- 229920002120 photoresistant polymer Polymers 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 abstract description 2
- 206010034960 Photophobia Diseases 0.000 abstract 1
- 208000013469 light sensitivity Diseases 0.000 abstract 1
- 239000003292 glue Substances 0.000 description 10
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 9
- 239000010936 titanium Substances 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 6
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 6
- 206010034972 Photosensitivity reaction Diseases 0.000 description 5
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- 230000036211 photosensitivity Effects 0.000 description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 4
- 239000005380 borophosphosilicate glass Substances 0.000 description 4
- 230000010354 integration Effects 0.000 description 4
- 238000001020 plasma etching Methods 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 2
- 229910021342 tungsten silicide Inorganic materials 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14643—Photodiode arrays; MOS imagers
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- H01—ELECTRIC ELEMENTS
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- 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
- H01L27/14621—Colour filter arrangements
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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
- H01L27/14625—Optical elements or arrangements associated with the device
- H01L27/14627—Microlenses
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- H—ELECTRICITY
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- 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
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- H01L27/14601—Structural or functional details thereof
- H01L27/14636—Interconnect structures
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- H—ELECTRICITY
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- 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
- H01L27/14645—Colour imagers
-
- 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
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- H01L31/08—Semiconductor devices 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; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors
- H01L31/10—Semiconductor devices 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; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors characterised by potential barriers, e.g. phototransistors
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
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- Microelectronics & Electronic Packaging (AREA)
- Solid State Image Pick-Up Elements (AREA)
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Abstract
【解決手段】本発明に係るCMOSイメージセンサは、半導体基板上に形成される複数のトランジスタと、前記複数のトランジスタを電気的に連結するために前記複数のトランジスタ上に形成される金属配線と、前記トランジスタと電気的に連結され、前記金属配線上に形成される複数の光感知素子とを含む。
【選択図】図3D
Description
電荷結合素子は、個別MOSキャパシタが互いに非常に近接した位置にあり電荷キャリアがキャパシタに格納されて移送される。
また、CMOSイメージセンサーは、電荷結合素子より安価のシリコンウェハーのエッチング工程を通して製造されるため、電荷結合素子に比べて大量生産が可能で集積度においても優れている。
また、カラー映像を作り出すためのイメージセンサは、外部からの光を受けて光電荷を生成および蓄積する光感知部分の上部にカラーフィルタが配列されている。
図1Aに示したように、半導体基板100に選択的にホウ素のようなP型イオンを注入して、Pウェル101を形成し、素子分離のために半導体基板100を選択的にエッチングしてトレンチを形成し、絶縁膜を充填させたフィールド酸化膜102を形成する。
ここで、前記第2TEOS酸化膜126、第2SOG酸化膜127、そして第2PECVD酸化膜128で第3金属配線絶縁膜を形成する。そして、このような工程を繰り返し行って必要な金属配線層を形成する。
図3Aを参照すると、半導体基板にトランジスタを形成する時、光感知素子を形成しないことを除いては関連技術と同一の方法を用いて半導体基板上に最後の金属配線まで形成させる。
ここで、コンタクトホールはプラズマエッチング工程を行って形成する。
ここで、前記第1TEOS酸化膜、第2SOG酸化膜、そして第2PECVD酸化膜は第2金属配線絶縁膜を構成する。
Claims (15)
- 半導体基板上に形成される複数のトランジスタと、
前記複数のトランジスタを電気的に連結するために、前記複数のトランジスタ上に形成される金属配線と、
前記トランジスタと電気的に連結され、前記金属配線上に形成される複数の光感知素子とを含むことを特徴とするCMOSイメージセンサ。 - 前記複数のトランジスタと前記複数の光感知素子との間に形成される金属配線絶縁膜を更に含むことを特徴とする請求項1に記載のCMOSイメージセンサ。
- 前記金属配線絶縁膜はTEOS酸化膜およびSOG酸化膜を含むことを特徴とする請求項2に記載のCMOSイメージセンサ。
- 前記金属配線絶縁膜は前記複数のトランジスタと前記金属配線との間に形成される第1金属配線絶縁膜および、前記金属配線と前記光感知素子との間に形成される第2金属配線絶縁膜を含むことを特徴とする請求項2に記載のCMOSイメージセンサ。
- 前記トランジスタと前記光感知素子とを電気的に連結させるために、前記金属配線絶縁膜に形成されるプラグを更に含むことを特徴とする請求項2に記載のCMOSイメージセンサ。
- 前記金属配線は2つ以上の金属配線層を含むことを特徴とする請求項1に記載のCMOSイメージセンサ。
- 前記複数の光感知素子の間に形成される隔離領域を更に含むことを特徴とする請求項1に記載のCMOSイメージセンサ。
- 前記複数の光感知素子上に形成されるカラーフィルタと、前記カラーフィルタ上に形成される平坦化層と、前記平坦化層上に形成されるマイクロレンズとを更に含むことを特徴とする請求項1に記載のCMOSイメージセンサ。
- 半導体基板上に複数のトランジスタを形成する段階と、
前記複数のトランジスタを電気的に連結するために、前記複数のトランジスタ上に金属配線を形成する段階と、
前記金属配線上に複数の光感知素子を形成する段階とを備えることを特徴とするCMOSイメージセンサの製造方法。 - 前記複数の光感知素子を形成する段階の前に、前記トランジスタ上に金属配線絶縁膜を形成する段階を更に備えることを特徴とする請求項9に記載のCMOSイメージセンサの製造方法。
- 前記複数の光感知素子を形成する段階は、
前記金属配線絶縁膜に前記トランジスタのゲート電極まで貫通するスルーホールを形成する段階と、
前記スルーホールを導電物質で充填して、プラグを形成する段階と、
前記金属配線絶縁膜上にシリコン層を蒸着する段階と、
前記プラグに対応する部分のみが露出されるように、前記シリコン層上にフォトレジストパターンを形成する段階と、
前記フォトレジストパターンをマスクに用いて、P型およびN型不純物を注入する段階とを含むことを特徴とする請求項10に記載のCMOSイメージセンサの製造方法。 - 前記複数の光感知素子の間に隔離領域を形成する段階を更に備えることを特徴とする請求項11に記載のCMOSイメージセンサの製造方法。
- 前記複数のトランジスタと前記金属配線との間に第1金属配線絶縁膜を形成する段階と、前記金属配線と前記複数の光感知素子との間に第2金属配線絶縁膜を形成する段階とを更に備えることを特徴とする請求項9に記載のCMOSイメージセンサの製造方法。
- 前記金属配線を形成する段階は、
前記複数のトランジスタ上に第1金属配線絶縁膜を形成する段階と、
前記第1金属配線絶縁膜上に第1金属配線層を形成する段階と、
前記第1金属配線層上に第2金属配線絶縁膜を形成する段階と、
前記第2金属配線絶縁膜上に第2金属配線層を形成する段階と、
前記第2金属配線層上に第3金属配線絶縁膜を形成する段階とを含むことを特徴とする請求項9に記載のCMOSイメージセンサの製造方法。 - 前記複数の光感知素子上にカラーフィルタを形成する段階と、前記カラーフィルタ上に平坦化層を形成する段階と、前記平坦化層上にマイクロレンズを形成する段階とを更に備えることを特徴とする請求項9に記載のCMOSイメージセンサの製造方法。
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KR1020040116557A KR100628238B1 (ko) | 2004-12-30 | 2004-12-30 | 시모스 이미지 센서 및 그의 제조 방법 |
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US (2) | US7442572B2 (ja) |
EP (1) | EP1677354A1 (ja) |
JP (1) | JP2006191007A (ja) |
KR (1) | KR100628238B1 (ja) |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008252004A (ja) * | 2007-03-30 | 2008-10-16 | Fujifilm Corp | 固体撮像素子、固体撮像素子の製造方法 |
WO2012005014A1 (ja) * | 2010-07-09 | 2012-01-12 | パナソニック株式会社 | 固体撮像装置 |
KR101517849B1 (ko) | 2008-08-28 | 2015-05-07 | 삼성전자주식회사 | 불순물 거름막을 갖는 시모스 이미지 센서의 반도체 장치 및 그 제조 방법 |
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KR100628238B1 (ko) * | 2004-12-30 | 2006-09-26 | 동부일렉트로닉스 주식회사 | 시모스 이미지 센서 및 그의 제조 방법 |
KR100798276B1 (ko) * | 2006-08-23 | 2008-01-24 | 동부일렉트로닉스 주식회사 | 이미지 센서 및 그 제조방법 |
US7482646B2 (en) * | 2006-10-18 | 2009-01-27 | Hejian Technology (Suzhou) Co., Ltd. | Image sensor |
KR100789577B1 (ko) * | 2006-10-30 | 2007-12-28 | 동부일렉트로닉스 주식회사 | 이미지 소자 및 이의 제조 방법 |
KR100866248B1 (ko) * | 2006-12-23 | 2008-10-30 | 동부일렉트로닉스 주식회사 | 씨모스 이미지센서의 제조방법 |
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 |
KR20080083971A (ko) * | 2007-03-14 | 2008-09-19 | 동부일렉트로닉스 주식회사 | 이미지센서 및 그 제조방법 |
KR100850289B1 (ko) * | 2007-06-08 | 2008-08-04 | (주)실리콘화일 | 적층 구조의 이미지센서 및 그 제조방법 |
JP4457142B2 (ja) * | 2007-10-17 | 2010-04-28 | シャープ株式会社 | 固体撮像素子、カメラモジュールおよび電子情報機器 |
KR100922548B1 (ko) * | 2007-11-26 | 2009-10-21 | 주식회사 동부하이텍 | 씨모스 이미지 센서 및 제조 방법 |
KR100954927B1 (ko) | 2007-12-14 | 2010-04-27 | 주식회사 동부하이텍 | 이미지 센서 및 그 제조방법 |
KR100997315B1 (ko) | 2008-07-15 | 2010-11-29 | 주식회사 동부하이텍 | 이미지 센서의 제조 방법 |
US9236408B2 (en) | 2012-04-25 | 2016-01-12 | Semiconductor Energy Laboratory Co., Ltd. | Oxide semiconductor device including photodiode |
CN102891158B (zh) * | 2012-10-25 | 2017-09-22 | 上海集成电路研发中心有限公司 | 一种背照式cmos图像传感器的制造方法 |
KR102268707B1 (ko) | 2014-07-28 | 2021-06-28 | 삼성전자주식회사 | 이미지 센서 |
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Also Published As
Publication number | Publication date |
---|---|
KR100628238B1 (ko) | 2006-09-26 |
CN100463199C (zh) | 2009-02-18 |
CN1819246A (zh) | 2006-08-16 |
EP1677354A1 (en) | 2006-07-05 |
US20060145217A1 (en) | 2006-07-06 |
KR20060077925A (ko) | 2006-07-05 |
US7442572B2 (en) | 2008-10-28 |
US20090072283A1 (en) | 2009-03-19 |
US7745862B2 (en) | 2010-06-29 |
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