JP2006041542A - イメージセンサ及びその製造方法 - Google Patents
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- 238000000034 method Methods 0.000 title abstract description 13
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 70
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 70
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 36
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 239000003086 colorant Substances 0.000 claims abstract description 13
- 239000010410 layer Substances 0.000 claims description 10
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- H01L27/144—Devices controlled by radiation
- H01L27/146—Imager structures
- H01L27/14643—Photodiode arrays; MOS imagers
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- 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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Abstract
【解決手段】基板400に形成され、各々異なる単位画素の受光素子として動作する複数のフォトダイオードPDと、前記複数のフォトダイオード上に形成されたシリコン酸化膜401と、前記シリコン酸化膜上に形成され、Rカラーの単位画素とオーバーラップされる部分では厚さが互いに異なる2層(402B,402C)に、GとBカラーの単位画素の部分では単独層402Cに形成されるシリコン窒化膜402と、前記シリコン窒化膜の上方で前記各フォトダイオードとオーバーラップされるように形成されたマイクロレンズ407とを備える。上記のRGBカラーをそれぞれYMgCyカラーに置き換えることができる。
【選択図】図3
Description
401 シリコン酸化膜
402 シリコン窒化膜
402A 第1シリコン窒化膜
402B Rカラー領域にだけ残っている第1シリコン窒化膜
402C 第2シリコン窒化膜
404 第1OCL
405 カラーフィルタ
406 第2OCL
407 マイクロレンズ
CFA カラーフィルタアレイ(Color Filter Array)
IMD メタルライン間の絶縁膜(Inter−Metal Dielectric)
ML マイクロレンズ(Micro-Lens)
OCL オーバーコーティング層(Over Coating Layer)
PD フォトダイオード
PL 保護膜(Passivation Layer)
PMD メタルライン形成前の絶縁膜(Pre−Metal Dielectric)
Claims (13)
- RGBのカラーを具現するイメージセンサにおいて、
基板に形成され、各々異なる単位画素の受光素子として動作する複数のフォトダイオードと、
複数の前記フォトダイオード上に形成されたシリコン酸化膜と、
前記シリコン酸化膜上に、Rカラーの単位画素とオーバーラップする部分では厚さが互いに異なる2層に、GとBカラーの単位画素の部分では単層に形成されるシリコン窒化膜と、
前記シリコン窒化膜の上方で複数の前記フォトダイオードの各々とオーバーラップするように形成された複数のマイクロレンズとを備えることを特徴とするイメージセンサ。 - 前記シリコン窒化膜は、前記Rカラーの単位画素の部分では400Å〜600Åの厚さを有し、前記Bカラーの単位画素の部分では300Å〜400Åの厚さを有することを特徴とする請求項1に記載のイメージセンサ。
- 前記シリコン窒化膜は、前記Gカラーの単位画素の部分では300Å〜400Åの厚さを有することを特徴とする請求項2に記載のイメージセンサ。
- 前記シリコン酸化膜は、150Å〜250Åの厚さを有することを特徴とする請求項2または請求項3に記載のイメージセンサ。
- YMgCyのカラーを具現するイメージセンサにおいて、
基板に形成され、各々異なる単位画素の受光素子として動作する複数のフォトダイオードと、
複数の前記フォトダイオード上に形成されたシリコン酸化膜と、
前記シリコン酸化膜上に、Yカラーの単位画素とオーバーラップする部分では厚さが互いに異なる2層に、MgとCyカラーの単位画素の部分では単層に形成されるシリコン窒化膜と、
前記シリコン窒化膜の上方で複数の前記フォトダイオードの各々とオーバーラップするように形成された複数のマイクロレンズとを備えることを特徴とするイメージセンサ。 - 前記シリコン窒化膜は、前記Yカラーの単位画素の部分では400Å〜600Åの厚さを有し、前記Cyカラーの単位画素の部分では300Å〜400Åの厚さを有することを特徴とする請求項5に記載のイメージセンサ。
- 前記シリコン窒化膜は、前記Mgカラーの単位画素の部分では300Å〜400Åの厚さを有することを特徴とする請求項6に記載のイメージセンサ。
- 前記シリコン酸化膜は、150Å〜250Åの厚さを有することを特徴とする請求項6または請求項7に記載のイメージセンサ。
- RGBのカラーを具現するイメージセンサの製造方法において、
基板に各々異なる単位画素の受光素子として動作する複数のフォトダイオードを形成するステップと、
複数の前記フォトダイオード上にシリコン酸化膜を形成するステップと、
前記シリコン酸化膜上に第1シリコン窒化膜を形成するステップと、
前記Gカラー及び前記Bカラーの単位画素とオーバーラップする部分の前記第1シリコン窒化膜を選択的に除去するステップと、
前記第1シリコン窒化膜が選択的に除去された前記基板全面に第2シリコン窒化膜を形成するステップと、
前記第2シリコン窒化膜の上で複数の前記フォトダイオードの各々とオーバーラップするように複数のマイクロレンズを形成するステップとを含むことを特徴とするイメージセンサの製造方法。 - YMgCyのカラーを具現するイメージセンサの製造方法において、
基板に各々異なる単位画素の受光素子として動作する複数のフォトダイオードを形成するステップと、
複数の前記フォトダイオード上にシリコン酸化膜を形成するステップと、
前記シリコン酸化膜上に第1シリコン窒化膜を形成するステップと、
前記Mgカラー及び前記Cyカラーの単位画素とオーバーラップする部分の前記第1シリコン窒化膜を選択的に除去するステップと、
前記第1シリコン窒化膜が選択的に除去された前記基板全面に第2シリコン窒化膜を形成するステップと、
前記第2シリコン窒化膜の上で複数の前記フォトダイオードの各々とオーバーラップするように複数のマイクロレンズを形成するステップとを含むことを特徴とするイメージセンサの製造方法。 - 前記第1シリコン窒化膜を100Å〜200Åの厚さに形成することを特徴とする請求項9または請求項10に記載のイメージセンサの製造方法。
- 前記第2シリコン窒化膜を300Å〜400Åの厚さに形成することを特徴とする請求項11に記載のイメージセンサの製造方法。
- 前記シリコン酸化膜を150Å〜250Åの厚さに形成することを特徴とする請求項12に記載のイメージセンサの製造方法。
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KR1020040059491A KR101106336B1 (ko) | 2004-07-29 | 2004-07-29 | 신호대잡음비를 개선할 수 있는 이미지센서 및 그 제조 방법 |
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Cited By (1)
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KR100640958B1 (ko) * | 2004-12-30 | 2006-11-02 | 동부일렉트로닉스 주식회사 | 보호막을 이용한 씨모스 이미지 센서 및 그 제조방법 |
KR100672994B1 (ko) * | 2005-01-28 | 2007-01-24 | 삼성전자주식회사 | 이미지 센서 및 그 제조 방법 |
KR100874954B1 (ko) | 2006-12-04 | 2008-12-19 | 삼성전자주식회사 | 후면 수광 이미지 센서 |
KR101356698B1 (ko) * | 2007-10-01 | 2014-01-29 | 삼성전자주식회사 | 화소 간 크로스토크의 영향을 저감하는 이미지 센서, 컬러필터 어레이, 및 촬상 장치 |
JP2010238848A (ja) * | 2009-03-31 | 2010-10-21 | Sony Corp | 固体撮像装置および電子機器 |
JP2011100900A (ja) | 2009-11-06 | 2011-05-19 | Sony Corp | 固体撮像装置及びその製造方法と設計方法並びに電子機器 |
US9923003B2 (en) * | 2015-06-30 | 2018-03-20 | Microsoft Technology Licensing, Llc | CMOS image sensor with a reduced likelihood of an induced electric field in the epitaxial layer |
JP6576277B2 (ja) * | 2016-03-23 | 2019-09-18 | 東京エレクトロン株式会社 | 窒化膜の形成方法 |
JP6728087B2 (ja) | 2017-02-22 | 2020-07-22 | 東京エレクトロン株式会社 | 成膜方法及び成膜装置 |
JP6873007B2 (ja) | 2017-08-09 | 2021-05-19 | 東京エレクトロン株式会社 | シリコン窒化膜の成膜方法及び成膜装置 |
JP7085929B2 (ja) | 2018-07-13 | 2022-06-17 | 東京エレクトロン株式会社 | 成膜方法 |
JP7090568B2 (ja) | 2019-01-30 | 2022-06-24 | 東京エレクトロン株式会社 | 成膜方法 |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US7829908B2 (en) | 2005-11-11 | 2010-11-09 | Nikon Corporation | Solid-state image sensors and display devices having anti-reflection film |
JP5082855B2 (ja) * | 2005-11-11 | 2012-11-28 | 株式会社ニコン | 反射防止膜を有する固体撮像装置および表示装置並びにその製造方法 |
Also Published As
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KR20060010900A (ko) | 2006-02-03 |
US7504681B2 (en) | 2009-03-17 |
US20060289910A1 (en) | 2006-12-28 |
TW200620641A (en) | 2006-06-16 |
KR101106336B1 (ko) | 2012-01-18 |
TWI279909B (en) | 2007-04-21 |
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