JP2008294214A - 半導体装置 - Google Patents
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- JP2008294214A JP2008294214A JP2007137938A JP2007137938A JP2008294214A JP 2008294214 A JP2008294214 A JP 2008294214A JP 2007137938 A JP2007137938 A JP 2007137938A JP 2007137938 A JP2007137938 A JP 2007137938A JP 2008294214 A JP2008294214 A JP 2008294214A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 142
- 239000010410 layer Substances 0.000 claims abstract description 292
- 239000012535 impurity Substances 0.000 claims abstract description 25
- 239000002344 surface layer Substances 0.000 claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims abstract description 10
- 230000000737 periodic effect Effects 0.000 claims description 5
- 230000015556 catabolic process Effects 0.000 abstract description 22
- 125000004122 cyclic group Chemical group 0.000 abstract 1
- 108091006146 Channels Proteins 0.000 description 63
- 230000005684 electric field Effects 0.000 description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 13
- 238000010586 diagram Methods 0.000 description 13
- 229910052710 silicon Inorganic materials 0.000 description 13
- 239000010703 silicon Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 5
- 238000005468 ion implantation Methods 0.000 description 3
- 102000004129 N-Type Calcium Channels Human genes 0.000 description 2
- 108090000699 N-Type Calcium Channels Proteins 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- -1 and for example Chemical compound 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
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- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7811—Vertical DMOS transistors, i.e. VDMOS transistors with an edge termination structure
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- H01L29/063—Reduced surface field [RESURF] pn-junction structures
- H01L29/0634—Multiple reduced surface field (multi-RESURF) structures, e.g. double RESURF, charge compensation, cool, superjunction (SJ), 3D-RESURF, composite buffer (CB) structures
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- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
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- H01L29/0638—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration for preventing surface leakage due to surface inversion layer, e.g. with channel stopper
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
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- H01L29/08—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
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- H01L29/0847—Source or drain regions of field-effect devices of field-effect transistors with insulated gate
- H01L29/0852—Source or drain regions of field-effect devices of field-effect transistors with insulated gate of DMOS transistors
- H01L29/0873—Drain regions
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- H01L29/70—Bipolar devices
- H01L29/72—Transistor-type devices, i.e. able to continuously respond to applied control signals
- H01L29/739—Transistor-type devices, i.e. able to continuously respond to applied control signals controlled by field-effect, e.g. bipolar static induction transistors [BSIT]
- H01L29/7393—Insulated gate bipolar mode transistors, i.e. IGBT; IGT; COMFET
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
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- Insulated Gate Type Field-Effect Transistor (AREA)
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Abstract
【解決手段】素子領域における第1導電型の第1の半導体層の主面上に設けられた第1導電型の第2の半導体層と第2導電型の第3の半導体層との周期的配列構造と、素子領域より外側の終端領域における第1の半導体層の主面上に設けられた終端半導体層と、終端半導体層より外側の最外周部における第1の半導体層の主面上で終端半導体層に接して設けられ終端半導体層よりも不純物濃度が高い第1導電型のチャネルストップ層と、チャネルストップ層の表面上の少なくとも一部の上に設けられチャネルストップ層における少なくとも表層部よりも終端半導体層側に突出したチャネルストップ電極とを備えた。
【選択図】図1
Description
図1は、本発明の第1の実施形態に係る半導体装置の要部の断面構造を示す模式図である。
図2は、同半導体装置におけるスーパージャンクション構造およびチャネルストップ層14の平面パターンを例示する模式図である。
図4は、本発明の第2の実施形態に係る半導体装置の要部の断面構造を示す模式図である。
図5は、本発明の第3の実施形態に係る半導体装置の要部の断面構造を示す模式図である。
図6は、本発明の第4の実施形態に係る半導体装置の要部の断面構造を示す模式図である。本実施形態は、図4に示される第2の実施形態と、図5に示される第3の実施形態とを組み合わせた構造である。
図7は、本発明の第5の実施形態に係る半導体装置の要部の断面構造を示す模式図である。
図8は、本発明の第6の実施形態に係る半導体装置の要部の断面構造を示す模式図である。
Claims (5)
- 第1導電型の第1の半導体層と、
前記第1の半導体層の主面に対して略垂直な縦方向に主電流経路が形成される素子領域における前記第1の半導体層の主面上に設けられた第1導電型の第2の半導体層と、
前記第2の半導体層に隣接して前記第1の半導体層の主面上に設けられた第2導電型の第3の半導体層と、
前記第1の半導体層の主面の反対面側に設けられた第1の主電極と、
前記素子領域の表面に接して設けられた第2の主電極と、
前記素子領域より外側の終端領域における前記第1の半導体層の主面上に設けられた終端半導体層と、
前記終端半導体層より外側の最外周部における前記第1の半導体層の主面上で前記終端半導体層に接して設けられ、前記終端半導体層よりも不純物濃度が高い第1導電型のチャネルストップ層と、
前記チャネルストップ層の表面上の少なくとも一部の上に設けられ、前記チャネルストップ層における少なくとも表層部よりも前記終端半導体層側に突出したチャネルストップ電極と、
を備えたことを特徴とする半導体装置。 - 前記終端半導体層は、前記素子領域側から前記チャネルストップ電極の下まで設けられた、第1導電型の第4の半導体層と前記第4の半導体層に隣接する第2導電型の第5の半導体層との周期的配列構造を有することを特徴とする請求項1記載の半導体装置。
- 前記チャネルストップ層に、前記第1の半導体層に近づくほど前記終端半導体層側への突出量が大きくなる階段状部分を設けたことを特徴とする請求項1または2に記載の半導体装置。
- 前記終端半導体層は、第2導電型であることを特徴とする請求項1〜3のいずれか1つに記載の半導体装置。
- 前記第1の半導体層の上に設けられ、前記第2の半導体層、前記第3の半導体層、前記終端半導体層および前記チャネルストップ層に接する第1導電型のバッファー層をさらに備えたことを特徴とする請求項1〜4のいずれか1つに記載の半導体装置。
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JP2007137938A JP4621708B2 (ja) | 2007-05-24 | 2007-05-24 | 半導体装置及びその製造方法 |
US12/123,072 US7622771B2 (en) | 2007-05-24 | 2008-05-19 | Semiconductor apparatus |
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JP2007137938A JP4621708B2 (ja) | 2007-05-24 | 2007-05-24 | 半導体装置及びその製造方法 |
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Cited By (13)
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JP2011192823A (ja) * | 2010-03-15 | 2011-09-29 | Fuji Electric Co Ltd | 超接合半導体装置の製造方法 |
JP2012104577A (ja) * | 2010-11-09 | 2012-05-31 | Fuji Electric Co Ltd | 半導体装置 |
KR20140097350A (ko) * | 2011-12-01 | 2014-08-06 | 비쉐이-실리코닉스 | 초접합 mosfet 디바이스를 위한 에지 종단 |
JP2016001671A (ja) * | 2014-06-12 | 2016-01-07 | サンケン電気株式会社 | 半導体装置 |
CN106057866A (zh) * | 2015-04-02 | 2016-10-26 | 富士电机株式会社 | 半导体装置及半导体装置的制造方法 |
US9577087B2 (en) | 2009-07-31 | 2017-02-21 | Fui Electric Co., Ltd. | Semiconductor apparatus |
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JP5011748B2 (ja) * | 2006-02-24 | 2012-08-29 | 株式会社デンソー | 半導体装置 |
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US10468479B2 (en) | 2014-05-14 | 2019-11-05 | Infineon Technologies Austria Ag | VDMOS having a drift zone with a compensation structure |
US9773863B2 (en) | 2014-05-14 | 2017-09-26 | Infineon Technologies Austria Ag | VDMOS having a non-depletable extension zone formed between an active area and side surface of semiconductor body |
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