JP2015162472A - 半導体装置 - Google Patents
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- JP2015162472A JP2015162472A JP2014034863A JP2014034863A JP2015162472A JP 2015162472 A JP2015162472 A JP 2015162472A JP 2014034863 A JP2014034863 A JP 2014034863A JP 2014034863 A JP2014034863 A JP 2014034863A JP 2015162472 A JP2015162472 A JP 2015162472A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 89
- 239000012535 impurity Substances 0.000 claims abstract description 51
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 210000000746 body region Anatomy 0.000 abstract description 46
- 230000020169 heat generation Effects 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 23
- 108091006146 Channels Proteins 0.000 description 9
- 230000005684 electric field Effects 0.000 description 8
- 239000002019 doping agent Substances 0.000 description 7
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 102000004129 N-Type Calcium Channels Human genes 0.000 description 4
- 108090000699 N-Type Calcium Channels Proteins 0.000 description 4
- 239000000969 carrier Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- 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
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- H01L29/7816—Lateral DMOS transistors, i.e. LDMOS transistors
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- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
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- H01L29/66681—Lateral DMOS transistors, i.e. LDMOS transistors
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- 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
- H01L29/7816—Lateral DMOS transistors, i.e. LDMOS transistors
- H01L29/7824—Lateral DMOS transistors, i.e. LDMOS transistors with a substrate comprising an insulating layer, e.g. SOI-LDMOS transistors
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- 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
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
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- H01L29/78621—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device characterised by the drain or the source properties, e.g. the doping structure, the composition, the sectional shape or the contact structure with LDD structure or an extension or an offset region or characterised by the doping profile
- H01L29/78624—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device characterised by the drain or the source properties, e.g. the doping structure, the composition, the sectional shape or the contact structure with LDD structure or an extension or an offset region or characterised by the doping profile the source and the drain regions being asymmetrical
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- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
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- H01L29/42364—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the insulating layer, e.g. thickness or uniformity
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- Insulated Gate Type Field-Effect Transistor (AREA)
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Abstract
【解決手段】半導体基板の半導体層内には、n型のソース領域と、p型のボディ領域と、n型のドレイン領域と、n型のドリフト領域が設けられる。ドリフト領域は、第1ドリフト領域と、第2ドリフト領域と、第3ドリフト領域と、低濃度ドリフト領域とを有している。第1ドリフト領域は、ボディ領域とドレイン領域の間の半導体層の上面に臨む範囲に形成されている。第2ドリフト領域は、n型不純物濃度が第1ドリフト領域よりも高く、第1ドリフト領域に接している。第3ドリフト領域は、n型不純物濃度が第2ドリフト領域よりも高く、第2ドリフト領域に接している。第1ドリフト領域は、第2ドリフト領域よりもボディ領域側に突出している。
【選択図】図1
Description
図1に示すように、本実施例の半導体装置10は、主にSiからなる半導体基板11を有している。半導体基板11は、裏面層12と、裏面層12の上面側(図1の上側)に形成されている埋込絶縁膜14と、埋込絶縁膜14の上面側に形成されている半導体層16とを有している。また、半導体基板11の上面には、ゲート絶縁膜60と、LOCOS酸化膜62と、ソース電極70と、ゲート電極80と、ドレイン電極90と、金属配線等(図示しない)とが設けられている。本実施例の半導体装置10は、横型のnチャネル型MOSFETである。
続いて、図4〜図8を参照して、第2実施例の半導体装置200について、第1実施例と異なる点を中心に説明する。本実施例の半導体装置200も、その基本構成は第1実施例と共通する。ただし、本実施例の半導体装置200は、ドリフト領域250の構造が、第1実施例とは異なる。
11:半導体基板
12:裏面層
14:埋込絶縁膜
16:半導体層
20:ソース領域
30:ボディ領域
32:低濃度領域
34:高濃度領域
40:ドレイン領域
42:低濃度領域
44:高濃度領域
50、250:ドリフト領域
52、252:第1ドリフト領域
54、254a、254b:第2ドリフト領域
56、256a、256b:第3ドリフト領域
58、258:低濃度ドリフト領域
60:ゲート絶縁膜
62:LOCOS酸化膜
70:ソース電極
80:ゲート電極
90:ドレイン電極
Claims (4)
- 半導体装置であって、
ソース電極と、
ゲート電極と、
ドレイン電極と、
半導体基板における上面に臨む範囲に形成されており、前記ソース電極と接続されている第1導電型の第1領域と、
前記上面に臨む範囲に形成されており、前記第1領域に接しており、前記ゲート電極に対してゲート絶縁膜を介して対向している第2導電型の第2領域と、
前記上面に臨む範囲に形成されており、前記ドレイン電極と接続されている第1導電型の第3領域と、
前記上面に臨む範囲に形成されており、前記第2領域と前記第3領域の間に形成されており、前記第2領域と前記第3領域の間における前記上面に臨む範囲に形成されている第1ドリフト領域と、第1導電型不純物濃度が前記第1ドリフト領域よりも高く、前記第2領域と前記第3領域の間における前記第1ドリフト領域に接している第2ドリフト領域と、第1導電型不純物濃度が前記第1ドリフト領域よりも低く、前記第2領域と前記第2ドリフト領域の間に形成されている低濃度ドリフト領域、を有しており、前記第1ドリフト領域と前記第2ドリフト領域は、それぞれ前記第3領域と接しており、前記第1ドリフト領域が前記第2ドリフト領域よりも前記第2領域側に突出している、第1導電型の第4領域と、
を有している、
半導体装置。 - 前記第2ドリフト領域が、前記第1ドリフト領域における前記半導体基板の前記上面から遠い側に形成されている、請求項1の半導体装置。
- 前記第2ドリフト領域が、前記第1ドリフト領域における前記半導体基板の上面に平行な平面上における横側に形成されている、請求項1の半導体装置。
- 前記第1ドリフト領域が、前記第2領域に接している、請求項1から3のいずれか1項の半導体装置。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014034863A JP5983658B2 (ja) | 2014-02-26 | 2014-02-26 | 半導体装置 |
US14/626,223 US9166040B2 (en) | 2014-02-26 | 2015-02-19 | Semiconductor device |
DE102015102569.8A DE102015102569B4 (de) | 2014-02-26 | 2015-02-24 | Halbleiterbauelement |
CN201510088818.8A CN104867979B (zh) | 2014-02-26 | 2015-02-26 | 半导体装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014034863A JP5983658B2 (ja) | 2014-02-26 | 2014-02-26 | 半導体装置 |
Publications (2)
Publication Number | Publication Date |
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JP2015162472A true JP2015162472A (ja) | 2015-09-07 |
JP5983658B2 JP5983658B2 (ja) | 2016-09-06 |
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JP2014034863A Expired - Fee Related JP5983658B2 (ja) | 2014-02-26 | 2014-02-26 | 半導体装置 |
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---|---|
US (1) | US9166040B2 (ja) |
JP (1) | JP5983658B2 (ja) |
CN (1) | CN104867979B (ja) |
DE (1) | DE102015102569B4 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022078256A (ja) * | 2018-03-29 | 2022-05-24 | ラピスセミコンダクタ株式会社 | 半導体装置 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9893146B1 (en) * | 2016-10-04 | 2018-02-13 | Monolithic Power Systems, Inc. | Lateral DMOS and the method for forming thereof |
JP7143575B2 (ja) * | 2017-07-18 | 2022-09-29 | 富士電機株式会社 | 半導体装置 |
CN107910358B (zh) * | 2017-11-06 | 2020-09-25 | 上海华虹宏力半导体制造有限公司 | Ldmos及其制造方法 |
DE102017130213B4 (de) * | 2017-12-15 | 2021-10-21 | Infineon Technologies Ag | Planarer feldeffekttransistor |
KR102458310B1 (ko) | 2018-06-19 | 2022-10-24 | 삼성전자주식회사 | 집적회로 소자 |
CN114256131A (zh) * | 2020-09-23 | 2022-03-29 | 无锡华润上华科技有限公司 | 半导体结构的制备方法及半导体结构 |
CN116364553A (zh) * | 2023-06-02 | 2023-06-30 | 华南理工大学 | 半导体器件的制造方法及半导体器件 |
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JP2000286417A (ja) * | 1999-03-30 | 2000-10-13 | Toshiba Corp | 電力用半導体装置 |
JP2001102586A (ja) * | 1999-09-28 | 2001-04-13 | Toshiba Corp | 高耐圧半導体装置 |
US20070090451A1 (en) * | 2005-10-25 | 2007-04-26 | Samsung Electronics Co., Ltd. | Lateral dmos transistors including retrograde regions therein and methods of fabricating the same |
JP2011103376A (ja) * | 2009-11-11 | 2011-05-26 | Renesas Electronics Corp | 半導体装置及びその製造方法 |
US20110127607A1 (en) * | 2009-12-02 | 2011-06-02 | Fairchild Semiconductor Corporation | Stepped-source ldmos architecture |
JP2012209459A (ja) * | 2011-03-30 | 2012-10-25 | Renesas Electronics Corp | 半導体装置 |
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US6599782B1 (en) * | 2000-01-20 | 2003-07-29 | Sanyo Electric Co., Ltd. | Semiconductor device and method of fabricating thereof |
JP4927340B2 (ja) * | 2005-02-24 | 2012-05-09 | オンセミコンダクター・トレーディング・リミテッド | 半導体装置 |
US7737469B2 (en) * | 2006-05-16 | 2010-06-15 | Kabushiki Kaisha Toshiba | Semiconductor device having superjunction structure formed of p-type and n-type pillar regions |
US8106451B2 (en) * | 2006-08-02 | 2012-01-31 | International Rectifier Corporation | Multiple lateral RESURF LDMOST |
CN102446967A (zh) * | 2010-09-30 | 2012-05-09 | 北京大学 | 含有复合漂移区的soi ldmos器件 |
-
2014
- 2014-02-26 JP JP2014034863A patent/JP5983658B2/ja not_active Expired - Fee Related
-
2015
- 2015-02-19 US US14/626,223 patent/US9166040B2/en not_active Expired - Fee Related
- 2015-02-24 DE DE102015102569.8A patent/DE102015102569B4/de not_active Expired - Fee Related
- 2015-02-26 CN CN201510088818.8A patent/CN104867979B/zh not_active Expired - Fee Related
Patent Citations (8)
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JP2000286417A (ja) * | 1999-03-30 | 2000-10-13 | Toshiba Corp | 電力用半導体装置 |
JP2001102586A (ja) * | 1999-09-28 | 2001-04-13 | Toshiba Corp | 高耐圧半導体装置 |
US6380566B1 (en) * | 1999-09-28 | 2002-04-30 | Kabushiki Kaisha Toshiba | Semiconductor device having FET structure with high breakdown voltage |
US20070090451A1 (en) * | 2005-10-25 | 2007-04-26 | Samsung Electronics Co., Ltd. | Lateral dmos transistors including retrograde regions therein and methods of fabricating the same |
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JP2011103376A (ja) * | 2009-11-11 | 2011-05-26 | Renesas Electronics Corp | 半導体装置及びその製造方法 |
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JP2012209459A (ja) * | 2011-03-30 | 2012-10-25 | Renesas Electronics Corp | 半導体装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022078256A (ja) * | 2018-03-29 | 2022-05-24 | ラピスセミコンダクタ株式会社 | 半導体装置 |
JP7315743B2 (ja) | 2018-03-29 | 2023-07-26 | ラピスセミコンダクタ株式会社 | 半導体装置 |
Also Published As
Publication number | Publication date |
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CN104867979B (zh) | 2018-01-02 |
JP5983658B2 (ja) | 2016-09-06 |
CN104867979A (zh) | 2015-08-26 |
DE102015102569B4 (de) | 2018-07-12 |
DE102015102569A1 (de) | 2015-08-27 |
US20150243778A1 (en) | 2015-08-27 |
US9166040B2 (en) | 2015-10-20 |
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