JP6500442B2 - アレイ型受光素子 - Google Patents
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- JP6500442B2 JP6500442B2 JP2015000435A JP2015000435A JP6500442B2 JP 6500442 B2 JP6500442 B2 JP 6500442B2 JP 2015000435 A JP2015000435 A JP 2015000435A JP 2015000435 A JP2015000435 A JP 2015000435A JP 6500442 B2 JP6500442 B2 JP 6500442B2
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- 239000004065 semiconductor Substances 0.000 claims description 29
- 239000000758 substrate Substances 0.000 description 21
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 description 17
- 239000012535 impurity Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 238000005530 etching Methods 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000003667 anti-reflective effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910005542 GaSb Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 229910000673 Indium arsenide Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
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- H01L27/144—Devices controlled by radiation
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- H01L31/00—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
- H01L31/02—Details
- H01L31/0232—Optical elements or arrangements associated with the device
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- H01L31/0256—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 characterised by their semiconductor bodies characterised by the material
- H01L31/0264—Inorganic materials
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- H01L31/0256—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 characterised by their semiconductor bodies characterised by the material
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- Light Receiving Elements (AREA)
- Solid State Image Pick-Up Elements (AREA)
Description
最初に本願発明の実施態様を列記して説明する。第一の実施態様に係るアレイ型受光素子は、支持基体と、半導体積層とを備え、前記支持基体は、主面と、光の入射面としての裏面と、複数の凹部とを備え、前記半導体積層は、受光層と、複数の画素領域とを備え、前記支持基体の前記主面に設けられ、前記複数の凹部のそれぞれは、前記裏面に設けられ、前記裏面から前記支持基体の厚み方向に窪んでおり、前記複数の凹部のそれぞれの底面は、前記複数の画素領域のそれぞれに対向しており、前記複数の凹部は、前記裏面の中心寄りに配置され、前記裏面は、前記複数の凹部を取り囲む外縁領域を備え、前記複数の凹部のそれぞれの側面は、テーパ状の領域を備え、前記テーパ状の領域は、前記主面の面内方向に対して所定の傾斜角度をなす。
本願発明に係るアレイ型受光素子の具体例を、添付図面を参照しつつ説明する。なお、本発明はこれらの例示に限定されるものではなく、特許請求の範囲によってしめされ特許請求の範囲と均等の意味および範囲内のすべての変更が含まれることが意図される。また、同一要素又は同一機能を有する要素には、同一符号を用いることとし、重複する説明は省略する。図1、図2及び図3を参照して、本実施形態に係るアレイ型受光素子10の構成を説明する。アレイ型受光素子10は、センシング装置100に適用することができる。図1は、センシング装置100の裏面(アレイ型受光素子10の裏面12b)の様子を示す図である。図1に、xyz座標が示されている。センシング装置100の裏面(アレイ型受光素子10の裏面12b)は、z軸に垂直である。図2は、図1に示すI−I線に沿った面(zx面)から矢印方向に見たセンシング装置100の内部の構造を示す図である。図2に記載のxyz座標は、図1に記載のxyz座標と同一である。図3は、図1に示すI−I線に沿った面(zx面)から矢印方向に見たアレイ型受光素子10の内部の構成を説明するための図である。図3に記載のxyz座標は、図2に記載のxyz座標と同一である。なお、図5〜図7は、センシング装置100の製造方法の主要な工程を説明するための図であるが、図2及び図3と同様に、I−I線に沿った面(zx面)から矢示方向にみた生産物の内部の様子を示している。
反射膜25は、側面121aに設けられている。
(L1−L2)/2≦X1≦(L1+L2)/2 …(1)。
X1=L3×tan(180°−2θ) …(2)。
上記の式(1)及び式(2)より、以下の関係が求まる(式(3))。
(L2−L1)/(2×L3)≧tan(2θ)≧−(L1+L2)/(2×L3) …(3)。
ただし、θは、45°≦θ≦90°である。この関係は、凹部121に入射した入射光を凹部121に対向する画素領域24に効果的に導くための条件である。凹部121の側面121aの全体がテーパ状の領域であるが、凹部121の側面121aの一部がテーパ状の領域であることもできる。凹部121の開口の形状は、例えば、平面視で対角線の長さが10[μm](一辺の長さが7.07[μm])程度の矩形であることができ、又は、平面視で直径が10[μm]程度の円形であることができる。例えば、配列ピッチL1=30[μm]、受光面241の径L2=10[μm]、裏面12bから受光面241までの距離L3=50[μm]とすると、傾斜角度θは、79.1度以上84.3度以下の程度となる。なお、傾斜角度は、45度以上90度以下であることができる。
複数の画素領域24‐1は、メサ溝G1によって分離されて形成されている。メサ溝G1は、半導体積層20‐1の表面P1に設けられている。表面P1は、半導体積層20‐1と支持基体12との接合面の反対側(支持基体12の主面12aの反対側)にあり、回路基板51の主面51aと対向している。表面P1は、第二キャップ層16b‐1の表面でもある。
Claims (4)
- 支持基体と、半導体積層とを備え、
前記支持基体は、主面と、光の入射面としての裏面と、複数の凹部とを備え、
前記半導体積層は、受光層と、複数の画素領域とを備え、前記支持基体の前記主面に設けられ、
前記複数の凹部のそれぞれは、前記裏面に設けられ、前記裏面から前記支持基体の厚み方向に窪んでおり、
前記複数の凹部のそれぞれの底面は、前記複数の画素領域のそれぞれに対向しており、
前記複数の凹部は、前記裏面の中心寄りに配置され、
前記裏面は、前記複数の凹部を取り囲む外縁領域を備え、
前記複数の凹部のそれぞれの側面は、テーパ状の領域を備え、
前記テーパ状の領域は、前記主面の面内方向に対して所定の傾斜角度をなし、
前記複数の画素領域のそれぞれは、受光面を備え、
前記受光面は、前記受光層の内部に設けられており、前記主面に沿って延びており、
前記複数の凹部のそれぞれの底面は、前記受光面に対向しており、
前記傾斜角度と、前記凹部の配列ピッチと、前記受光面の径と、前記裏面から前記受光面までの距離とは、前記傾斜角度をθ、前記凹部の配列ピッチをL1、前記受光面の径をL2、前記裏面から前記受光面までの距離をL3、とすると、
90度≧θ≧45度、且つ、(L2−L1)/(2×L3)≧tan(2θ)≧−(L1+L2)/(2×L3)、
の関係を満たす、
アレイ型受光素子。 - 光を反射する反射膜を更に備え、
前記反射膜は、前記側面に設けられている、
請求項1に記載のアレイ型受光素子。 - 前記複数の画素領域は、前記半導体積層においてZnが選択的に拡散された領域である、
請求項1又は2に記載のアレイ型受光素子。 - 前記半導体積層は、前記複数の画素領域のそれぞれに対応する複数のメサ部を備え、
前記複数の画素領域のそれぞれは、メサ溝によって画定され、
前記メサ溝は、前記半導体積層の表面に設けられている、
請求項1又は2に記載のアレイ型受光素子。
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JP6757264B2 (ja) * | 2017-01-23 | 2020-09-16 | 株式会社エンプラス | 光束制御部材、発光装置、面光源装置および表示装置 |
FR3090198A1 (fr) * | 2018-12-18 | 2020-06-19 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Détecteur infrarouge avec structure de collecte de photons et son procédé de fabrication |
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JPH0677518A (ja) * | 1992-08-26 | 1994-03-18 | Nec Corp | 半導体受光素子 |
JPH0722603A (ja) * | 1993-06-22 | 1995-01-24 | Toshiba Corp | 光結線装置 |
US5952645A (en) * | 1996-08-27 | 1999-09-14 | California Institute Of Technology | Light-sensing array with wedge-like reflective optical concentrators |
JP3152907B2 (ja) * | 1998-12-10 | 2001-04-03 | 沖電気工業株式会社 | 半導体受光素子及びその製造方法 |
JP2001144278A (ja) | 1999-11-12 | 2001-05-25 | Nippon Sheet Glass Co Ltd | 受光素子アレイ |
DE10037103A1 (de) * | 2000-07-27 | 2002-02-14 | Aeg Infrarot Module Gmbh | Multispektrale Photodiode |
JP4496636B2 (ja) * | 2000-11-10 | 2010-07-07 | 株式会社デンソー | 光集積回路およびその製造方法 |
CN100477239C (zh) * | 2002-08-09 | 2009-04-08 | 浜松光子学株式会社 | 光电二极管阵列和放射线检测器 |
KR100464333B1 (ko) * | 2003-03-28 | 2005-01-03 | 삼성전자주식회사 | 수광소자 및 그 제조방법 |
US7880258B2 (en) * | 2003-05-05 | 2011-02-01 | Udt Sensors, Inc. | Thin wafer detectors with improved radiation damage and crosstalk characteristics |
US7242069B2 (en) * | 2003-05-05 | 2007-07-10 | Udt Sensors, Inc. | Thin wafer detectors with improved radiation damage and crosstalk characteristics |
JP4765285B2 (ja) * | 2004-09-13 | 2011-09-07 | ソニー株式会社 | 固体撮像素子及びその製造方法 |
JP5092251B2 (ja) * | 2006-02-22 | 2012-12-05 | 住友電気工業株式会社 | 光検出装置 |
US20110162699A1 (en) * | 2008-06-12 | 2011-07-07 | Shenkar College Of Engineering And Design | Solar cell with funnel-like groove structure |
WO2011055344A1 (en) * | 2009-11-05 | 2011-05-12 | Hiok Nam Tay | Optimized light guide array for an image sensor |
JP2011146602A (ja) * | 2010-01-15 | 2011-07-28 | Sumitomo Electric Ind Ltd | 検出装置、受光素子アレイ、および、これらの製造方法 |
JP2012160691A (ja) * | 2011-01-14 | 2012-08-23 | Sumitomo Electric Ind Ltd | 受光装置、光学装置および受光装置の製造方法 |
US8772898B2 (en) * | 2012-02-09 | 2014-07-08 | Omnivision Technologies, Inc. | Lateral light shield in backside illuminated imaging sensors |
US9123839B2 (en) * | 2013-03-13 | 2015-09-01 | Taiwan Semiconductor Manufacturing Company Limited | Image sensor with stacked grid structure |
KR102066603B1 (ko) * | 2013-07-03 | 2020-01-15 | 에스케이하이닉스 주식회사 | 3차원 광전변환소자를 구비한 이미지 센서 |
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