JP5136578B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP5136578B2 JP5136578B2 JP2010051794A JP2010051794A JP5136578B2 JP 5136578 B2 JP5136578 B2 JP 5136578B2 JP 2010051794 A JP2010051794 A JP 2010051794A JP 2010051794 A JP2010051794 A JP 2010051794A JP 5136578 B2 JP5136578 B2 JP 5136578B2
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- termination
- trench
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- semiconductor device
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- 239000004065 semiconductor Substances 0.000 title claims description 108
- 239000000758 substrate Substances 0.000 claims description 66
- 210000000746 body region Anatomy 0.000 claims description 47
- 239000012212 insulator Substances 0.000 claims description 13
- 238000009792 diffusion process Methods 0.000 description 28
- 239000010410 layer Substances 0.000 description 22
- 230000015556 catabolic process Effects 0.000 description 17
- 239000012535 impurity Substances 0.000 description 16
- 150000002500 ions Chemical class 0.000 description 11
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 8
- 229910010271 silicon carbide Inorganic materials 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000011229 interlayer Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000007943 implant Substances 0.000 description 3
- 238000005530 etching Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/7811—Vertical DMOS transistors, i.e. VDMOS transistors with an edge termination structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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]
- H01L29/0619—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] with a supplementary region doped oppositely to or in rectifying contact with the semiconductor containing or contacting region, e.g. guard rings with PN or Schottky junction
- H01L29/0623—Buried supplementary region, e.g. buried guard ring
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/0642—Isolation within the component, i.e. internal isolation
- H01L29/0649—Dielectric regions, e.g. SiO2 regions, air gaps
- H01L29/0653—Dielectric regions, e.g. SiO2 regions, air gaps adjoining the input or output region of a field-effect device, e.g. the source or drain region
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/0657—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 the shape of the body
- H01L29/0661—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 the shape of the body specially adapted for altering the breakdown voltage by removing semiconductor material at, or in the neighbourhood of, a reverse biased junction, e.g. by bevelling, moat etching, depletion etching
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/1095—Body region, i.e. base region, of DMOS transistors or IGBTs
Description
本明細書または図面に説明した技術要素は、単独であるいは各種の組み合わせによって技術的有用性を発揮するものであり、出願時請求項記載の組み合わせに限定されるものではない。また、本明細書または図面に例示した技術は複数目的を同時に達成するものであり、そのうちの一つの目的を達成すること自体で技術的有用性を持つものである。
12:半導体基板
14:ドレイン電極
16:ドレイン領域
18:ドリフト領域
20:拡散領域
22:終端トレンチ
24:ボディ領域
27:ソース領域
28:ボディコンタクト領域
29,30:層間絶縁膜
32:ソース電極
34:ゲート電極
36:絶縁体
38:ゲートトレンチ
Claims (1)
- 素子領域と、その素子領域を取囲む終端領域と、を有する半導体基板と、
半導体基板の上面に設けられた第1主電極と、
半導体基板の下面に設けられた第2主電極と、を有しており、
素子領域は、
半導体基板の上面に臨む範囲に形成されると共に、第1主電極に接続されている第1導電型の第1ボディ領域と、
第1ボディ領域の下面に接している第2導電型の第1ドリフト領域と、
第1ボディ領域を貫通して第1ドリフト領域にまで伸びるゲートトレンチ内に配置され、第1ボディ領域と対向しているゲート電極と、
ゲート電極とゲートトレンチの壁面との間に配置されている絶縁体と、を有しており、
終端領域は、第2導電型の第2ドリフト領域を少なくとも有しており、
終端領域には、素子領域の外側を一巡する第1終端トレンチが設けられており、
ゲートトレンチの底部には、その周囲が第1ドリフト領域によって囲まれている第1導電型のフローティング領域が形成されていない一方で、第1終端トレンチの底部には、その周囲が第2ドリフト領域によって囲まれている第1導電型のフローティング領域が形成されており、
素子領域における半導体基板の上面の位置は、終端領域における半導体基板の上面の位置と一致しており、第1終端トレンチの深さがゲートトレンチの深さよりも深くされており、
終端領域には、複数の第1終端トレンチと、それら複数の第1終端トレンチのうち最も外側に位置する第1終端トレンチの外側を一巡する第2終端トレンチが形成されており、
最も外側に位置する第1終端トレンチと第2終端トレンチとの間隔は、隣接する第1終端トレンチの間隔よりも長くされており、
第2終端トレンチの底部には、その周囲が第2ドリフト領域によって囲まれている第1導電型のフローティング領域が形成されていない、半導体装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010051794A JP5136578B2 (ja) | 2010-03-09 | 2010-03-09 | 半導体装置 |
US13/042,499 US9064952B2 (en) | 2010-03-09 | 2011-03-08 | Semiconductor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010051794A JP5136578B2 (ja) | 2010-03-09 | 2010-03-09 | 半導体装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011187708A JP2011187708A (ja) | 2011-09-22 |
JP5136578B2 true JP5136578B2 (ja) | 2013-02-06 |
Family
ID=44559139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2010051794A Expired - Fee Related JP5136578B2 (ja) | 2010-03-09 | 2010-03-09 | 半導体装置 |
Country Status (2)
Country | Link |
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US (1) | US9064952B2 (ja) |
JP (1) | JP5136578B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8384394B2 (en) | 2009-11-13 | 2013-02-26 | Brother Kogyo Kabushiki Kaisha | Communication apparatus and withstand voltage test method |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012059931A (ja) * | 2010-09-09 | 2012-03-22 | Toshiba Corp | 半導体装置 |
TWM439885U (en) | 2012-04-13 | 2012-10-21 | Taiwan Semiconductor Co Ltd | Semiconductor component trench structure |
TWM435716U (en) | 2012-04-13 | 2012-08-11 | Taiwan Semiconductor Co Ltd | The active region of the trench distributed arrangement of the semiconductor device structure |
JP6164636B2 (ja) | 2013-03-05 | 2017-07-19 | ローム株式会社 | 半導体装置 |
JP6164604B2 (ja) | 2013-03-05 | 2017-07-19 | ローム株式会社 | 半導体装置 |
TWI512887B (zh) * | 2013-05-24 | 2015-12-11 | Super Group Semiconductor Co Ltd | Gutter type power gold - oxygen semiconductor structure and its forming method |
JP6514035B2 (ja) * | 2015-05-27 | 2019-05-15 | 株式会社豊田中央研究所 | 半導体装置 |
US9910639B2 (en) * | 2015-11-30 | 2018-03-06 | International Business Machines Corporation | Random number generation using threshold switching mechanism |
JP6460016B2 (ja) | 2016-03-09 | 2019-01-30 | トヨタ自動車株式会社 | スイッチング素子 |
JP6669628B2 (ja) * | 2016-10-20 | 2020-03-18 | トヨタ自動車株式会社 | スイッチング素子 |
JP2019046991A (ja) * | 2017-09-04 | 2019-03-22 | 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 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2314206A (en) * | 1996-06-13 | 1997-12-17 | Plessey Semiconductors Ltd | Preventing voltage breakdown in semiconductor devices |
US6011298A (en) | 1996-12-31 | 2000-01-04 | Stmicroelectronics, Inc. | High voltage termination with buried field-shaping region |
JPH1187698A (ja) * | 1997-09-02 | 1999-03-30 | Kansai Electric Power Co Inc:The | 高耐圧半導体装置及びこの装置を用いた電力変換器 |
JP2001015744A (ja) | 1999-06-30 | 2001-01-19 | Toshiba Corp | 電力用半導体素子 |
JP4414863B2 (ja) * | 2004-10-29 | 2010-02-10 | トヨタ自動車株式会社 | 絶縁ゲート型半導体装置およびその製造方法 |
US8394702B2 (en) * | 2010-03-24 | 2013-03-12 | Alpha And Omega Semiconductor Incorporated | Method for making dual gate oxide trench MOSFET with channel stop using three or four masks process |
-
2010
- 2010-03-09 JP JP2010051794A patent/JP5136578B2/ja not_active Expired - Fee Related
-
2011
- 2011-03-08 US US13/042,499 patent/US9064952B2/en active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8384394B2 (en) | 2009-11-13 | 2013-02-26 | Brother Kogyo Kabushiki Kaisha | Communication apparatus and withstand voltage test method |
Also Published As
Publication number | Publication date |
---|---|
US20110220991A1 (en) | 2011-09-15 |
JP2011187708A (ja) | 2011-09-22 |
US9064952B2 (en) | 2015-06-23 |
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