JP4530036B2 - 半導体装置 - Google Patents
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- JP4530036B2 JP4530036B2 JP2007325175A JP2007325175A JP4530036B2 JP 4530036 B2 JP4530036 B2 JP 4530036B2 JP 2007325175 A JP2007325175 A JP 2007325175A JP 2007325175 A JP2007325175 A JP 2007325175A JP 4530036 B2 JP4530036 B2 JP 4530036B2
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- 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
- H01L29/10—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 not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/1025—Channel region of field-effect devices
- H01L29/1029—Channel region of field-effect devices of field-effect transistors
- H01L29/1033—Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure
- H01L29/1041—Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure with a non-uniform doping structure in the channel region surface
- H01L29/1045—Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure with a non-uniform doping structure in the channel region surface the doping structure being parallel to the channel length, e.g. DMOS like
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- 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
- H01L29/7813—Vertical DMOS transistors, i.e. VDMOS transistors with trench gate electrode, e.g. UMOS transistors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- 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
- H01L29/0603—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
- H01L29/0607—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
- H01L29/0611—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 increasing or controlling the breakdown voltage of reverse biased devices
- H01L29/0615—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 increasing or controlling the breakdown voltage of reverse biased devices by the doping profile or the shape or the arrangement of the PN junction, or with supplementary regions, e.g. junction termination extension [JTE]
- 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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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66674—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/66712—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/66734—Vertical DMOS transistors, i.e. VDMOS transistors with a step of recessing the gate electrode, e.g. to form a trench gate electrode
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- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Description
図1は本実施形態の一例である半導体装置(以下、SJ−MOSと略記)100を模式的に示した断面図で、図1(a)はSJ−MOS100の繰り返し単位構造を示した図であり、図1(b)は図1(a)の単位構造により構成されるSJ−MOS100を示した図である。尚、図1に示すSJ−MOS100において、図22に示したSJ−MOS90と同様の部分については、同じ符号を付した。図1(a)に示す単位構造が、一点鎖線で示した対称軸A1−A1,A2−A2で順次反転されて繰り返されることにより、図1(b)に示すSJ−MOS100が構成される。
図14は、上記具体例に係るSJ−MOS103,103a〜103cのシミュレーション結果で、耐圧の不純物濃度バランス依存性を比較して示した図である。
第1実施形態のSJ−MOSにおいては、N型コラム21nとP型コラム21pの不純物濃度をそれぞれ一定とし、前述した不純物量差Dを、N型コラム21nとP型コラム21pの幅で設定していた。本実施形態のSJ−MOSにおいては、N型コラムとP型コラムの幅をそれぞれ一定とし、N型コラムとP型コラムの不純物濃度で不純物量差Dを設定する場合の例を説明する。
第1実施形態では、N型コラム21nとP型コラム21pの不純物濃度をそれぞれ一定とし、前述した第1コラム層と第2コラム層の不純物量差DをN型コラム21nとP型コラム21pの幅で設定するSJ−MOSを例示した。また、第2実施形態では、N型コラム21nとP型コラム21pの幅をそれぞれ一定とし、前述した第1コラム層と第2コラム層の不純物量差DをN型コラムとP型コラムの不純物濃度で設定するSJ−MOSを例示した。しかしながら、本発明の半導体装置はこれに限らず、N型コラム21nとP型コラム21pの幅と不純物濃度のどちらも異なる値にして、前述した第1コラム層と第2コラム層の不純物量差Dを設定するようにしてもよい。
1 N型(n+)半導体層(シリコン基板)
10〜18 PNコラム層
11a〜18a 第1コラム層
11b〜18b 第2コラム層
14c,16c,18c 第3コラム層
20n,21n N型(n)コラム
20p,21p P型(p)コラム
3 P型(p−)半導体層
3a P型(p+)領域
4 N型(n+)領域
5 側壁絶縁膜
6 埋込多結晶シリコン
7 絶縁ゲート電極
Claims (9)
- 半導体基板の厚さ方向において、
第1導電型コラムと第2導電型コラムが当接して交互に繰り返し配置されてなる所定厚さのPNコラム層が形成され、
前記PNコラム層の第1界面に当接して、第2導電型半導体層が形成され、
前記PNコラム層の第2界面に当接して、第1導電型半導体層が形成されてなる半導体装置であって、
前記PNコラム層において、
深さの関数としての不純物量差を、(前記第2導電型コラムの不純物量−前記第1導電型コラムの不純物量)と定義したとき、
前記第1界面から所定の厚さで、任意深さの前記不純物量差が正の一定値に設定された第1コラム層と、
前記第2界面から所定の厚さで、任意深さの前記不純物量差が負の一定値に設定された第2コラム層とが、設けられてなることを特徴とする半導体装置。 - 前記第1コラム層の不純物量差と前記第2コラム層の不純物量差の絶対値が、等しく設定されてなることを特徴とする請求項1に記載の半導体装置。
- 前記第1コラム層と前記第2コラム層の厚さが、等しく設定されてなる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。
- 前記第1コラム層と前記第2コラム層の厚さが、前記PNコラム層の厚さの1/2であることを特徴とする請求項3に記載の半導体装置。
- 前記PNコラム層において、
前記第1コラム層と前記第2コラム層の間に所定の厚さで、任意深さの前記不純物量差が前記第1コラム層における不純物量差と前記第2コラム層における不純物量差の間の値に設定された第3コラム層が、設けられてなることを特徴とする請求項1乃至3のいずれか一項に記載の半導体装置。 - 前記第3コラム層の厚さが、前記第1コラム層の厚さおよび前記第2コラム層の厚さのいずれよりも小さく設定されてなることを特徴とする請求項5に記載の半導体装置。
- 前記第1導電型コラムと前記第2導電型コラムが、それぞれ、一定の不純物濃度に設定されてなり、
前記第1コラム層と前記第2コラム層の不純物量差の違いが、前記第1導電型コラムと前記第2導電型コラムの幅の違いで設定されてなることを特徴とする請求項1乃至6のいずれか一項に記載の半導体装置。 - 前記第1導電型コラムと前記第2導電型コラムが、それぞれ、一定の幅に設定されてなり、
前記第1コラム層と前記第2コラム層の不純物量差の違いが、前記第1導電型コラムと前記第2導電型コラムの不純物濃度の違いで設定されてなることを特徴とする請求項1乃至6のいずれか一項に記載の半導体装置。 - 前記半導体装置が、
前記第1導電型半導体層をチャネル形成層とし、該第1導電型半導体層を貫通して前記PNコラム層の第2導電型コラムに達するトレンチ構造の絶縁ゲート電極を有する、
縦型の絶縁ゲートトランジスタ素子であることを特徴とする請求項1乃至8のいずれか一項に記載の半導体装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007325175A JP4530036B2 (ja) | 2007-12-17 | 2007-12-17 | 半導体装置 |
DE102008061962.0A DE102008061962B4 (de) | 2007-12-17 | 2008-12-12 | Halbleitervorrichtung mit Super Junction |
KR1020080128089A KR101066988B1 (ko) | 2007-12-17 | 2008-12-16 | 수퍼 정션을 가지는 반도체 장치 |
US12/314,786 US7859048B2 (en) | 2007-12-17 | 2008-12-16 | Semiconductor device having super junction |
CN2008101856536A CN101465370B (zh) | 2007-12-17 | 2008-12-17 | 具有超级结的半导体器件 |
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JP2007325175A JP4530036B2 (ja) | 2007-12-17 | 2007-12-17 | 半導体装置 |
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JP2009147234A JP2009147234A (ja) | 2009-07-02 |
JP4530036B2 true JP4530036B2 (ja) | 2010-08-25 |
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JP2007325175A Expired - Fee Related JP4530036B2 (ja) | 2007-12-17 | 2007-12-17 | 半導体装置 |
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US (1) | US7859048B2 (ja) |
JP (1) | JP4530036B2 (ja) |
KR (1) | KR101066988B1 (ja) |
CN (1) | CN101465370B (ja) |
DE (1) | DE102008061962B4 (ja) |
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US8438269B1 (en) * | 2008-09-12 | 2013-05-07 | At&T Intellectual Property I, Lp | Method and apparatus for measuring the end-to-end performance and capacity of complex network service |
JP5543758B2 (ja) * | 2009-11-19 | 2014-07-09 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
CN102456715B (zh) * | 2010-10-25 | 2015-06-03 | 上海华虹宏力半导体制造有限公司 | 一种半导体器件结构及其制作方法 |
CN102738207B (zh) * | 2011-04-07 | 2014-12-10 | 上海华虹宏力半导体制造有限公司 | 超级结器件的终端保护结构及制造方法 |
TW201310641A (zh) * | 2011-08-19 | 2013-03-01 | Anpec Electronics Corp | 功率電晶體元件及其製作方法 |
CN103035677B (zh) * | 2011-09-30 | 2015-08-19 | 上海华虹宏力半导体制造有限公司 | 超级结结构、超级结mos晶体管及其制造方法 |
TWI469351B (zh) * | 2011-11-29 | 2015-01-11 | Anpec Electronics Corp | 具有超級介面之功率電晶體元件及其製作方法 |
JP2013175655A (ja) * | 2012-02-27 | 2013-09-05 | Toshiba Corp | 電力用半導体装置及びその製造方法 |
CN103681321B (zh) * | 2012-09-17 | 2016-05-18 | 中国科学院微电子研究所 | 一种高压超结igbt的制作方法 |
JP2014060299A (ja) * | 2012-09-18 | 2014-04-03 | Toshiba Corp | 半導体装置 |
US9496331B2 (en) * | 2012-12-07 | 2016-11-15 | Denso Corporation | Semiconductor device having vertical MOSFET with super junction structure, and method for manufacturing the same |
JP6253885B2 (ja) * | 2013-01-07 | 2017-12-27 | ルネサスエレクトロニクス株式会社 | 縦型パワーmosfet |
KR101795828B1 (ko) * | 2013-09-17 | 2017-11-10 | 매그나칩 반도체 유한회사 | 초접합 반도체 소자 및 제조 방법 |
CN103730372B (zh) * | 2013-12-27 | 2016-06-08 | 西安龙腾新能源科技发展有限公司 | 一种可提高器件耐压的超结制造方法 |
CN103904120B (zh) * | 2014-03-28 | 2017-01-11 | 北京中科新微特科技开发股份有限公司 | 一种具有网状外延结构的超结mosfet |
JP6782529B2 (ja) * | 2015-01-29 | 2020-11-11 | 富士電機株式会社 | 半導体装置 |
JP6510280B2 (ja) * | 2015-03-11 | 2019-05-08 | ルネサスエレクトロニクス株式会社 | 半導体装置およびその製造方法 |
DE102016115559B4 (de) * | 2016-08-22 | 2020-06-04 | Infineon Technologies Austria Ag | Transistorbauelement mit verbesserter leckstromcharakteristik |
DE102016115805B4 (de) | 2016-08-25 | 2020-07-09 | Infineon Technologies Austria Ag | Transistorbauelement mit hoher lawinen-festigkeit |
JP6850659B2 (ja) * | 2017-03-31 | 2021-03-31 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法 |
WO2019069416A1 (ja) * | 2017-10-05 | 2019-04-11 | 三菱電機株式会社 | 半導体装置 |
JP7081876B2 (ja) | 2017-12-19 | 2022-06-07 | ラピスセミコンダクタ株式会社 | 半導体装置及び半導体装置の製造方法 |
CN111200007B (zh) * | 2018-11-20 | 2023-01-06 | 深圳尚阳通科技有限公司 | 超结器件及其制造方法 |
CN111341829B (zh) * | 2018-12-18 | 2022-08-30 | 深圳尚阳通科技有限公司 | 超结结构及其制造方法 |
CN111341830B (zh) * | 2018-12-18 | 2022-08-30 | 深圳尚阳通科技有限公司 | 超结结构及其制造方法 |
CN110212018B (zh) * | 2019-05-20 | 2022-08-16 | 上海华虹宏力半导体制造有限公司 | 超结结构及超结器件 |
CN113488388A (zh) * | 2021-06-07 | 2021-10-08 | 西安电子科技大学 | 一种沟槽栅超结vdmosfet半导体器件及其制备方法 |
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JP2004072068A (ja) * | 2002-06-14 | 2004-03-04 | Fuji Electric Holdings Co Ltd | 半導体素子 |
JP2007300034A (ja) * | 2006-05-02 | 2007-11-15 | Toshiba Corp | 半導体装置及び半導体装置の製造方法 |
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US20080017897A1 (en) * | 2006-01-30 | 2008-01-24 | Kabushiki Kaisha Toshiba | Semiconductor device and method of manufacturing same |
US8106453B2 (en) * | 2006-01-31 | 2012-01-31 | Denso Corporation | Semiconductor device having super junction structure |
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2008
- 2008-12-12 DE DE102008061962.0A patent/DE102008061962B4/de not_active Expired - Fee Related
- 2008-12-16 KR KR1020080128089A patent/KR101066988B1/ko active IP Right Grant
- 2008-12-16 US US12/314,786 patent/US7859048B2/en not_active Expired - Fee Related
- 2008-12-17 CN CN2008101856536A patent/CN101465370B/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2004072068A (ja) * | 2002-06-14 | 2004-03-04 | Fuji Electric Holdings Co Ltd | 半導体素子 |
JP2007300034A (ja) * | 2006-05-02 | 2007-11-15 | Toshiba Corp | 半導体装置及び半導体装置の製造方法 |
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US7859048B2 (en) | 2010-12-28 |
CN101465370B (zh) | 2010-08-18 |
US20090321819A1 (en) | 2009-12-31 |
DE102008061962B4 (de) | 2017-02-09 |
CN101465370A (zh) | 2009-06-24 |
KR20090065459A (ko) | 2009-06-22 |
JP2009147234A (ja) | 2009-07-02 |
DE102008061962A1 (de) | 2009-06-25 |
KR101066988B1 (ko) | 2011-09-23 |
DE102008061962A8 (de) | 2009-11-19 |
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