JP5424182B2 - 背面照射を用いる光センサおよびピクセル・アレイ、ならびに光センサを形成する方法 - Google Patents
背面照射を用いる光センサおよびピクセル・アレイ、ならびに光センサを形成する方法 Download PDFInfo
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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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- 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
- 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
- H01L27/1464—Back illuminated imager 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
- H01L27/14683—Processes or apparatus peculiar to the manufacture or treatment of these devices or parts thereof
- H01L27/14689—MOS based technologies
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- 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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Description
Claims (13)
- 撮像センサ・セルであって、
N型にドーピングされた半導体層と、
前記半導体層の一方の面に形成された誘電体層と、
前記半導体層を囲み、前記誘電体層に達するトレンチと、
前記トレンチで囲まれた前記半導体層の他方の面内の一部の領域に形成され、P型にドーピングされたアイソレーション・ウェルであって、前記アイソレーション・ウェルは前記半導体層とともに当該半導体層の他方の面で光センサを形成する前記アイソレーション・ウェルと、
前記誘電体層によって前記半導体層から分離されたカラー・フィルタと、
前記カラー・フィルタ上の保護層と
を備え、
光が、前記保護層を介して、前記カラー・フィルタを介して、前記誘電体層を介して、そして次に前記半導体層を介して渡され、前記光は、前記保護層下の前記カラー・フィルタでフィルタリングされ、そして前記誘電体層下の前記光センサにより選択的に検知される前記撮像センサ・セル。 - 前記半導体層が活性シリコン層であり、且つ、前記誘電体層が酸化物層である、請求項1に記載の撮像センサ・セル。
- 前記アイソレーション・ウェルが前記半導体層とともにフォトダイオードを形成し、
前記撮像センサ・セルが前記アイソレーション・ウェル内に形成された複数のNFETをさらに有し、
前記複数のNFETは、前記フォトダイオードからの光信号を選択的に検知するために接続されている、
請求項2に記載の撮像センサ・セル。 - 前記複数のNFETが、
前記フォトダイオードの陰極と供給電圧(Vdd)との間に接続され、リセット信号でゲートされる第1のNFETと、
ドレインで前記供給電圧に接続され、前記陰極でゲートされる第2のNFETと、
前記第2のNFETのソースとデータ出力との間に接続され、ピクセル・セレクト信号でゲートされる第3のNFETと
を備えている、請求項3に記載の撮像センサ・セル。 - 前記活性シリコン層が厚さ2〜6μmであり、前記誘電体層が厚さ0.1〜1.0μmである、請求項2〜4のいずれか一項に記載の撮像センサ・セル。
- 前記保護層が石英層である、請求項1に記載の撮像センサ・セル。
- 前記保護層が、さらに、不可視光線をフィルタリングにより除去する、請求項1に記載の撮像センサ・セル。
- 前記撮像センサ・セルに対する配線が、前記半導体層から離れて、前記他方の面内の光センサ構造から伸張する、請求項1に記載の撮像センサ・セル。
- 撮像センサであって、
ピクセル・アレイであって、各ピクセルが、
N型にドーピングされた半導体アイランドと、
前記半導体アイランドの一方の面に形成された誘電体層と、
前記半導体アイランドを囲み、前記誘電体層に達するトレンチと、
前記トレンチで囲まれた前記半導体アイランドの他方の面内の一部の領域に形成され、P型にドーピングされたアイソレーション・ウェルであって、前記アイソレーション・ウェルは前記半導体アイランドとともに当該半導体アイランドの他方の面で光センサを形成する前記アイソレーション・ウェルと、
前記他方の面内の光センサ構造から伸張する、ピクセルに対するセル配線と、
前記誘電体層によって前記半導体アイランドから分離されたカラー・フィルタと
を備えている、前記ピクセル・アレイと、
前記カラー・フィルタ上の保護層と
を備え、
光が、前記保護層を介して、前記カラー・フィルタを介して、前記誘電体層を介して、そして次に前記半導体アイランドを介して渡され、前記光は、前記保護層下の前記カラー・フィルタでフィルタリングされ、そして前記誘電体層下の前記光センサにより選択的に検知される前記撮像センサ。 - 前記半導体アイランドがシャロー・トレンチ素子分離により隣接するシリコン・アイランドから分離される、厚さ2〜6μmのシリコン・アイランドであるとともに、前記カラー・フィルタが厚さ0.5〜1.5μmで、厚さ0.1〜1.0μmの誘電体層で前記半導体アイランドから分離されている、請求項9に記載の撮像センサ。
- 前記アイソレーション・ウェルが前記半導体アイランドとともにフォトダイオードを形成し、
前記アイソレーション・ウェル上のNFETが前記フォトダイオードからの光信号を選択的に検知するために前記フォトダイオードに接続される、請求項10に記載の撮像センサ。 - 前記NFETが、
前記フォトダイオードの陰極と供給電圧(Vdd)との間に接続され、リセット信号でゲートされる第1のNFETと、
ドレインで前記供給電圧に接続され、前記陰極でゲートされる第2のNFETと、
前記第2のNFETのソースとデータ出力との間に接続され、ピクセル・セレクト信号でゲートされる第3のNFETと
を備えている、請求項11に記載の撮像センサ。 - ハンドル層が前記セル配線の上方の表面に結合され、前記ピクセル・アレイが前記保護層と前記ハンドル層の間に挟まれている、請求項10に記載の撮像センサ。
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Application Number | Priority Date | Filing Date | Title |
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US11/276218 | 2006-02-17 | ||
US11/276,218 US7586139B2 (en) | 2006-02-17 | 2006-02-17 | Photo-sensor and pixel array with backside illumination and method of forming the photo-sensor |
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JP2007221134A JP2007221134A (ja) | 2007-08-30 |
JP5424182B2 true JP5424182B2 (ja) | 2014-02-26 |
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CN (1) | CN101034711B (ja) |
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JP4486043B2 (ja) * | 2004-12-30 | 2010-06-23 | 東部エレクトロニクス株式会社 | Cmosイメージセンサー及びその製造方法 |
FR2904143A1 (fr) * | 2006-07-24 | 2008-01-25 | St Microelectronics Sa | Capteur d'images eclaire par la face arriere a temperature de substrat uniforme |
US7547573B2 (en) * | 2006-08-01 | 2009-06-16 | United Microelectronics Corp. | Image sensor and method of manufacturing the same |
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US7586139B2 (en) | 2009-09-08 |
CN101034711A (zh) | 2007-09-12 |
US20070194397A1 (en) | 2007-08-23 |
CN101034711B (zh) | 2010-09-22 |
JP2007221134A (ja) | 2007-08-30 |
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