JPH09500241A - セルトレンチの角部にチャンネル阻止手段を備えるトレンチ型dmosトランジスタ - Google Patents
セルトレンチの角部にチャンネル阻止手段を備えるトレンチ型dmosトランジスタInfo
- Publication number
- JPH09500241A JPH09500241A JP8501069A JP50106996A JPH09500241A JP H09500241 A JPH09500241 A JP H09500241A JP 8501069 A JP8501069 A JP 8501069A JP 50106996 A JP50106996 A JP 50106996A JP H09500241 A JPH09500241 A JP H09500241A
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- JP
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- Prior art keywords
- trench
- cell
- substrate
- region
- corner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000000903 blocking effect Effects 0.000 title abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 55
- 239000000758 substrate Substances 0.000 claims abstract description 49
- 210000000746 body region Anatomy 0.000 claims description 31
- 238000005468 ion implantation Methods 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 7
- 239000004065 semiconductor Substances 0.000 claims description 7
- 238000011049 filling Methods 0.000 claims description 5
- 239000002019 doping agent Substances 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims description 2
- 238000009499 grossing Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 8
- 229920002120 photoresistant polymer Polymers 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 description 13
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 13
- 238000007796 conventional method Methods 0.000 description 11
- 239000005380 borophosphosilicate glass Substances 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- 229920005591 polysilicon Polymers 0.000 description 5
- 238000002513 implantation Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 3
- 230000000873 masking effect Effects 0.000 description 3
- 238000001020 plasma etching Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000000407 epitaxy Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 239000005360 phosphosilicate glass Substances 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 241000183290 Scleropages leichardti Species 0.000 description 1
- QGQFOJGMPGJJGG-UHFFFAOYSA-K [B+3].[O-]N=O.[O-]N=O.[O-]N=O Chemical compound [B+3].[O-]N=O.[O-]N=O.[O-]N=O QGQFOJGMPGJJGG-UHFFFAOYSA-K 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- HAYXDMNJJFVXCI-UHFFFAOYSA-N arsenic(5+) Chemical compound [As+5] HAYXDMNJJFVXCI-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- FAIAAWCVCHQXDN-UHFFFAOYSA-N phosphorus trichloride Chemical compound ClP(Cl)Cl FAIAAWCVCHQXDN-UHFFFAOYSA-N 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- H01L29/0684—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, relative sizes or dispositions of the semiconductor regions or junctions between the regions
- H01L29/0692—Surface layout
- H01L29/0696—Surface layout of cellular field-effect devices, e.g. multicellular DMOS transistors or IGBTs
-
- 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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/402—Field plates
-
- 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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/402—Field plates
- H01L29/407—Recessed field plates, e.g. trench field plates, buried field plates
-
- 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
- H01L29/7811—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 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
- H01L29/1095—Body region, i.e. base region, of DMOS transistors or IGBTs
-
- 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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42356—Disposition, e.g. buried gate electrode
- H01L29/4236—Disposition, e.g. buried gate electrode within a trench, e.g. trench gate electrode, groove gate electrode
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1.第1の導電型を備え少なくとも二つの互いに交叉するトレンチを画する基板 と、 前記トレンチを覆う絶縁層と、 前記トレンチを充填する導電性材料と、 前記第1の導電型を備え前記トレンチ近傍の前記基板の主表面から前記基板 に延びるソース領域と、 前記第1の導電型とは反対の第2の導電型を備え前記トレンチ近傍の前記主 表面から基板に延びる本体領域と を含み、 前記二つの互いに交叉するトレンチの画するセルの角部において前記ソース 領域が前記トレンチから隔てられている トレンチ型トランジスタセル。 2.前記ソース領域が前記セルの角部から少なくとも0.1ミクロン隔てられてお り、前記セルの中心において前記本体領域が前記トレンチと接している請求項1 記載のセル。 3.二つの互いに交叉するトレンチで各々が画される少なくとも四つの角部を前 記セルが含み、前記ソース領域が前記セルの各角部から隔てられている請求項1 記載のセル。 4.前記トレンチの幅が約1.5ミクロンよりも小さい請求項1記載のセル。 5.前記本体領域が約1.5ミクロン以下だけ前記基板に延びている請求項1記載 のセル。 6.前記ソース領域が約0.5ミクロンだけ前記基板に延びている請求項1記載の セル。 7.前記セルの前記角部では前記ソース領域が前記トレンチと接触していない請 求項2記載のセル。 8.前記第2の導電性を備え前記ソース領域の中心部における前記主表面から前 記基板に前記本体領域とは異なる深さまで延びる付加的な本体領域をさらに含む 請求項1記載のセル。 9.前記主表面において前記本体領域が前記トレンチと接触状態にある長方形の 領域を画する請求項2記載のセル。 10.列状に配置した複数の同様のセルをさらに含み、各列のトレンチを充填する 導電性材料を接続するゲート指状部材を含み、前記ゲート指状部材近傍のセルの 列が不活性である請求項1記載のセル。 11.トランジスタセルを形成する方法であって、 第1の主表面から延びる第1の導電型の第1の領域を備える半導体基板を準 備する工程と、 前記基板内で前記主表面から前記基板に延び互いに交叉して前記セルの角部 を画する少なくとも二つのトレンチを形成する工程と、 第2の導電型を備え少なくとも二つのトレンチに沿って前記基板に延びる本 体領域を前記基板内に形成する工程と、 前記主表面を覆ってマスク層を形成し前記角部で前記主表面を覆う工程と、 前記第1の導電型を有し前記主表面から前記少なくとも二つのトレンチに沿 って前記基板に延び前記マスク層に範囲を画され前記角部から隔てられているソ ース領域を形成する工程と を含む方法。 12.前記半導体領域を形成する工程が前記基板内にイオン打込みを行うことを含 む請求項11記載の方法。 13.前記半導体領域を形成する工程が前記基板にドーパントを予め拡散させるこ とを含む請求項11記載の方法。 14.前記トレンチを形成する工程のあとに、 前記トレンチの側壁に酸化物層を成長させる工程と、 前記酸化物層を除去し、それによって前記側壁を滑らかにするとともに前記 トレンチの底部に丸みづけする工程と、 をさらに含む請求項11記載の方法。 15.前記酸化物層を成長させる工程の前に、前記トレンチの前記側壁を等方性ド ライエッチングにかけ、それによって前記側壁を滑らかにし前記トレンチの上部 および底部に丸みづけする工程をさらに含む請求項14記載の方法。 16.前記ソース領域の中心部における前記主表面から前記基板に前記本体領域の 深さとは異なる深さまで延びる前記第2の導電型の付加的本体領域を前記基板内 に形成する工程をさらに含む請求項11記載の方法。 17.前記マスク層を形成する工程が前記セルの各角部に長方形のマスク部を画す ることを含む請求項11記載の方法。 18.前記角部における前記主表面を覆うマスク層の一部の領域を前記トレンチの 幅およびプロセス目合わせ技法に左右されるものとして定める工程をさらに含む 請求項11記載の方法。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US253,527 | 1988-10-05 | ||
US08/253,527 | 1994-06-03 | ||
US08/253,527 US5468982A (en) | 1994-06-03 | 1994-06-03 | Trenched DMOS transistor with channel block at cell trench corners |
PCT/US1995/006701 WO1995034094A1 (en) | 1994-06-03 | 1995-05-31 | Trenched dmos transistor with channel block at cell trench corners |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH09500241A true JPH09500241A (ja) | 1997-01-07 |
JP2893554B2 JP2893554B2 (ja) | 1999-05-24 |
Family
ID=22960647
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8501069A Expired - Lifetime JP2893554B2 (ja) | 1994-06-03 | 1995-05-31 | セルトレンチの角部にチャンネル阻止手段を備えるトレンチ型dmosトランジスタ |
Country Status (5)
Country | Link |
---|---|
US (1) | US5468982A (ja) |
EP (1) | EP0712535B1 (ja) |
JP (1) | JP2893554B2 (ja) |
DE (1) | DE69525592T2 (ja) |
WO (1) | WO1995034094A1 (ja) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001015738A (ja) * | 1999-06-29 | 2001-01-19 | Toshiba Corp | 半導体装置 |
JP2001508595A (ja) * | 1997-05-07 | 2001-06-26 | シリコニックス・インコーポレイテッド | 側壁スペーサを用いる高密度トレンチ形dmosの製造 |
JP2004507882A (ja) * | 2000-06-16 | 2004-03-11 | ゼネラル セミコンダクター,インク. | ゲート酸化層の完全性を向上させた半導体トレンチデバイス |
JP2007096138A (ja) * | 2005-09-29 | 2007-04-12 | Denso Corp | 半導体基板の製造方法、半導体基板、縦型スーパージャンクションmosデバイス、半導体基板の評価方法 |
JP2008199048A (ja) * | 2008-03-31 | 2008-08-28 | Siliconix Inc | 側壁スペーサを用いる高密度トレンチ形dmosの製造 |
WO2014207793A1 (ja) * | 2013-06-24 | 2014-12-31 | 株式会社日立製作所 | 半導体装置およびその製造方法 |
KR20150138317A (ko) * | 2013-04-02 | 2015-12-09 | 도요타 지도샤(주) | 트렌치 게이트 전극을 이용하는 igbt |
US11139395B2 (en) | 2019-09-13 | 2021-10-05 | Kabushiki Kaisha Toshiba | Semiconductor device |
Families Citing this family (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5592005A (en) * | 1995-03-31 | 1997-01-07 | Siliconix Incorporated | Punch-through field effect transistor |
JP3361913B2 (ja) * | 1995-04-11 | 2003-01-07 | 沖電気工業株式会社 | 半導体装置 |
JP2987328B2 (ja) * | 1995-06-02 | 1999-12-06 | シリコニックス・インコーポレイテッド | 双方向電流阻止機能を備えたトレンチ型パワーmosfet |
US5689128A (en) * | 1995-08-21 | 1997-11-18 | Siliconix Incorporated | High density trenched DMOS transistor |
US5821583A (en) * | 1996-03-06 | 1998-10-13 | Siliconix Incorporated | Trenched DMOS transistor with lightly doped tub |
US5770878A (en) | 1996-04-10 | 1998-06-23 | Harris Corporation | Trench MOS gate device |
US5904525A (en) * | 1996-05-08 | 1999-05-18 | Siliconix Incorporated | Fabrication of high-density trench DMOS using sidewall spacers |
US6096608A (en) * | 1997-06-30 | 2000-08-01 | Siliconix Incorporated | Bidirectional trench gated power mosfet with submerged body bus extending underneath gate trench |
DE19727676A1 (de) * | 1997-06-30 | 1999-01-07 | Asea Brown Boveri | MOS gesteuertes Leistungshalbleiterbauelement |
JP3299283B2 (ja) * | 1997-08-29 | 2002-07-08 | 三菱電機株式会社 | 絶縁ゲート型半導体装置とその製造方法 |
US6103635A (en) * | 1997-10-28 | 2000-08-15 | Fairchild Semiconductor Corp. | Trench forming process and integrated circuit device including a trench |
US6429481B1 (en) | 1997-11-14 | 2002-08-06 | Fairchild Semiconductor Corporation | Field effect transistor and method of its manufacture |
US6518145B1 (en) | 1998-08-06 | 2003-02-11 | International Business Machines Corporation | Methods to control the threshold voltage of a deep trench corner device |
EP1155458B1 (de) | 1998-12-18 | 2010-02-03 | Infineon Technologies AG | Feldeffekt-transistoranordnung mit einer grabenförmigen gate-elektrode und einer zusätzlichen hochdotierten schicht im bodygebiet |
US5981999A (en) * | 1999-01-07 | 1999-11-09 | Industrial Technology Research Institute | Power trench DMOS with large active cell density |
JP2000269486A (ja) * | 1999-03-15 | 2000-09-29 | Toshiba Corp | 半導体装置 |
US6191447B1 (en) | 1999-05-28 | 2001-02-20 | Micro-Ohm Corporation | Power semiconductor devices that utilize tapered trench-based insulating regions to improve electric field profiles in highly doped drift region mesas and methods of forming same |
US6518621B1 (en) | 1999-09-14 | 2003-02-11 | General Semiconductor, Inc. | Trench DMOS transistor having reduced punch-through |
US6838735B1 (en) * | 2000-02-24 | 2005-01-04 | International Rectifier Corporation | Trench FET with non overlapping poly and remote contact therefor |
US6312993B1 (en) * | 2000-02-29 | 2001-11-06 | General Semiconductor, Inc. | High speed trench DMOS |
US6376315B1 (en) * | 2000-03-31 | 2002-04-23 | General Semiconductor, Inc. | Method of forming a trench DMOS having reduced threshold voltage |
KR100327323B1 (ko) * | 2000-05-30 | 2002-03-06 | 김덕중 | 래치 업이 억제된 트랜치 게이트 구조의 전력용반도체소자 및 그 제조방법 |
US6555895B1 (en) * | 2000-07-17 | 2003-04-29 | General Semiconductor, Inc. | Devices and methods for addressing optical edge effects in connection with etched trenches |
ATE545958T1 (de) | 2000-09-21 | 2012-03-15 | Cambridge Semiconductor Ltd | Halbleiterbauelement und dessen herstellungsverfahren |
JP4614522B2 (ja) * | 2000-10-25 | 2011-01-19 | 富士通セミコンダクター株式会社 | 半導体装置及びその製造方法 |
GB0208833D0 (en) * | 2002-04-18 | 2002-05-29 | Koninkl Philips Electronics Nv | Trench-gate semiconductor devices |
JP4130356B2 (ja) * | 2002-12-20 | 2008-08-06 | 株式会社東芝 | 半導体装置 |
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US7601596B2 (en) * | 2006-11-16 | 2009-10-13 | Infineon Technologies Austria Ag | Semiconductor device with trench transistors and method for manufacturing such a device |
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- 1995-05-31 DE DE69525592T patent/DE69525592T2/de not_active Expired - Lifetime
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Cited By (9)
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JP2001508595A (ja) * | 1997-05-07 | 2001-06-26 | シリコニックス・インコーポレイテッド | 側壁スペーサを用いる高密度トレンチ形dmosの製造 |
JP2001015738A (ja) * | 1999-06-29 | 2001-01-19 | Toshiba Corp | 半導体装置 |
JP2004507882A (ja) * | 2000-06-16 | 2004-03-11 | ゼネラル セミコンダクター,インク. | ゲート酸化層の完全性を向上させた半導体トレンチデバイス |
JP2007096138A (ja) * | 2005-09-29 | 2007-04-12 | Denso Corp | 半導体基板の製造方法、半導体基板、縦型スーパージャンクションmosデバイス、半導体基板の評価方法 |
JP2008199048A (ja) * | 2008-03-31 | 2008-08-28 | Siliconix Inc | 側壁スペーサを用いる高密度トレンチ形dmosの製造 |
KR20150138317A (ko) * | 2013-04-02 | 2015-12-09 | 도요타 지도샤(주) | 트렌치 게이트 전극을 이용하는 igbt |
JP5983864B2 (ja) * | 2013-04-02 | 2016-09-06 | トヨタ自動車株式会社 | トレンチゲート電極を利用するigbt |
WO2014207793A1 (ja) * | 2013-06-24 | 2014-12-31 | 株式会社日立製作所 | 半導体装置およびその製造方法 |
US11139395B2 (en) | 2019-09-13 | 2021-10-05 | Kabushiki Kaisha Toshiba | Semiconductor device |
Also Published As
Publication number | Publication date |
---|---|
JP2893554B2 (ja) | 1999-05-24 |
EP0712535A1 (en) | 1996-05-22 |
EP0712535A4 (en) | 1997-02-19 |
US5468982A (en) | 1995-11-21 |
DE69525592D1 (de) | 2002-04-04 |
WO1995034094A1 (en) | 1995-12-14 |
DE69525592T2 (de) | 2002-08-22 |
EP0712535B1 (en) | 2002-02-27 |
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