JP5198752B2 - 半導体装置の製造方法 - Google Patents
半導体装置の製造方法 Download PDFInfo
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- JP5198752B2 JP5198752B2 JP2006264480A JP2006264480A JP5198752B2 JP 5198752 B2 JP5198752 B2 JP 5198752B2 JP 2006264480 A JP2006264480 A JP 2006264480A JP 2006264480 A JP2006264480 A JP 2006264480A JP 5198752 B2 JP5198752 B2 JP 5198752B2
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- semiconductor substrate
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- 239000004065 semiconductor Substances 0.000 title claims description 95
- 238000004519 manufacturing process Methods 0.000 title claims description 19
- 239000000758 substrate Substances 0.000 claims description 60
- 239000005368 silicate glass Substances 0.000 claims description 26
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 17
- 229920005591 polysilicon Polymers 0.000 claims description 17
- 239000005380 borophosphosilicate glass Substances 0.000 claims 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims 1
- 239000010410 layer Substances 0.000 description 49
- 239000011229 interlayer Substances 0.000 description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 239000010703 silicon Substances 0.000 description 7
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 6
- 229910052796 boron Inorganic materials 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 6
- 238000007254 oxidation reaction Methods 0.000 description 6
- 238000005530 etching Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000005468 ion implantation Methods 0.000 description 5
- 229910052785 arsenic Inorganic materials 0.000 description 4
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000001133 acceleration Effects 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
- 239000012298 atmosphere Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
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- 229910052719 titanium Inorganic materials 0.000 description 2
- 238000007687 exposure technique Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000005360 phosphosilicate glass Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
Images
Classifications
-
- 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
- H01L29/40—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
-
- 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
- H01L29/66007—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
-
- 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
- H01L29/0684—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
Description
2 ドレイン領域
3、103 ベース領域
4、104 ソース領域
5、105 トレンチ
6、106 ゲート絶縁膜
7、107 ゲート電極
8、108 層間絶縁膜
9、109 ドレイン電極
10、110 ソース電極
101 N+型半導体基板
102 エピタキシャル層
108a 熱酸化膜
108b シリケートガラス膜
111 ベースコンタクト領域
112 単位MOSFET
113 HTO膜
Claims (7)
- 半導体基板上にトレンチを形成し、
前記トレンチ内部にゲート電極を埋め込み、
前記ゲート電極上に熱酸化膜を形成し、
前記熱酸化膜上及び前記半導体基板表面上をシリケートガラス膜で覆った後、前記半導体基板表面が露出するまで当該シリケートガラス膜をエッチバックし、
前記シリケートガラス膜がエッチバックされた前記半導体基板表面の全体に絶縁膜を形成し、
その後、前記半導体基板内部にベース領域を形成し、
前記半導体基板内部の前記ベース領域上にソース領域を形成する半導体装置の製造方法。 - 前記絶縁膜は、HTO膜又は熱酸化膜である、請求項1に記載の半導体装置の製造方法。
- 前記ゲート電極上に形成された熱酸化膜は、前記ゲート電極を構成するポリシリコンの熱酸化膜を備える、請求項1又は2に記載の半導体装置の製造方法。
- 前記ポリシリコンの熱酸化膜は、前記トレンチ側面に形成される単結晶シリコンの熱酸化膜よりも厚い、請求項3に記載の半導体装置の製造方法。
- 前記シリケートガラス膜は、BPSG又はNSGからなる、請求項1〜4のいずれか一項に記載の半導体装置の製造方法。
- 前記ソース領域を、前記トレンチに囲われた各領域の長手方向において、ベースコンタクト領域を介して分割して形成する、請求項1〜5のいずれか一項に記載の半導体装置の製造方法。
- 前記ソース領域を形成した後、前記半導体基板表面上にソース電極を、絶縁膜を介さずに形成する、請求項1〜6のいずれか一項に記載の半導体装置の製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006264480A JP5198752B2 (ja) | 2006-09-28 | 2006-09-28 | 半導体装置の製造方法 |
US11/905,078 US7776693B2 (en) | 2006-09-28 | 2007-09-27 | Method of manufacturing semiconductor apparatus |
TW096136254A TWI362705B (en) | 2006-09-28 | 2007-09-28 | Method of manufacturing semiconductor apparatus |
CN2007101613722A CN101154598B (zh) | 2006-09-28 | 2007-09-28 | 制造半导体装置的方法 |
US12/801,806 US7947556B2 (en) | 2006-09-28 | 2010-06-25 | Method of manufacturing semiconductor apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006264480A JP5198752B2 (ja) | 2006-09-28 | 2006-09-28 | 半導体装置の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008085134A JP2008085134A (ja) | 2008-04-10 |
JP5198752B2 true JP5198752B2 (ja) | 2013-05-15 |
Family
ID=39256155
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006264480A Expired - Fee Related JP5198752B2 (ja) | 2006-09-28 | 2006-09-28 | 半導体装置の製造方法 |
Country Status (4)
Country | Link |
---|---|
US (2) | US7776693B2 (ja) |
JP (1) | JP5198752B2 (ja) |
CN (1) | CN101154598B (ja) |
TW (1) | TWI362705B (ja) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010062477A (ja) * | 2008-09-05 | 2010-03-18 | Rohm Co Ltd | トレンチ型半導体装置及びその製造方法 |
JP5403966B2 (ja) * | 2008-07-29 | 2014-01-29 | ローム株式会社 | トレンチ型半導体素子及びトレンチ型半導体素子の製造方法 |
KR20100065895A (ko) * | 2008-12-09 | 2010-06-17 | 주식회사 동부하이텍 | 트렌치형 mosfet 소자의 게이트 및 게이트 형성방법 |
US8188538B2 (en) | 2008-12-25 | 2012-05-29 | Rohm Co., Ltd. | Semiconductor device and method of manufacturing semiconductor device |
US8188484B2 (en) * | 2008-12-25 | 2012-05-29 | Rohm Co., Ltd. | Semiconductor device |
JP2011134910A (ja) | 2009-12-24 | 2011-07-07 | Rohm Co Ltd | SiC電界効果トランジスタ |
US8378392B2 (en) * | 2010-04-07 | 2013-02-19 | Force Mos Technology Co., Ltd. | Trench MOSFET with body region having concave-arc shape |
CN102176467B (zh) * | 2011-03-29 | 2016-03-23 | 上海华虹宏力半导体制造有限公司 | 沟槽式金属氧化物半导体场效应晶体管 |
JP2014075483A (ja) * | 2012-10-04 | 2014-04-24 | Sanken Electric Co Ltd | 半導体装置及び半導体装置の製造方法 |
JP5675931B2 (ja) * | 2013-10-28 | 2015-02-25 | ローム株式会社 | トレンチ型半導体素子の製造方法 |
JP6871316B2 (ja) * | 2014-04-15 | 2021-05-12 | ローム株式会社 | 半導体装置および半導体装置の製造方法 |
JP6566512B2 (ja) | 2014-04-15 | 2019-08-28 | ローム株式会社 | 半導体装置および半導体装置の製造方法 |
CN111785693A (zh) * | 2019-04-04 | 2020-10-16 | 三垦电气株式会社 | 半导体装置和电子设备 |
CN111584635B (zh) * | 2020-05-13 | 2022-09-20 | 杰华特微电子股份有限公司 | 半导体器件 |
US11894457B2 (en) | 2020-05-09 | 2024-02-06 | Joulwatt Technology Co., Ltd. | Semiconductor device and manufacturing method thereof |
DE102020115157A1 (de) | 2020-06-08 | 2021-12-09 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung eingetragener Verein | Verfahren zur Herstellung eines Trench-MOSFET |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4767722A (en) * | 1986-03-24 | 1988-08-30 | Siliconix Incorporated | Method for making planar vertical channel DMOS structures |
JP2689606B2 (ja) * | 1989-05-24 | 1997-12-10 | 富士電機株式会社 | 絶縁ゲート電界効果型トランジスタの製造方法 |
JP3502531B2 (ja) * | 1997-08-28 | 2004-03-02 | 株式会社ルネサステクノロジ | 半導体装置の製造方法 |
US6351009B1 (en) * | 1999-03-01 | 2002-02-26 | Fairchild Semiconductor Corporation | MOS-gated device having a buried gate and process for forming same |
JP3358611B2 (ja) * | 2000-01-19 | 2002-12-24 | 日本電気株式会社 | 半導体装置の製造方法 |
US6472678B1 (en) | 2000-06-16 | 2002-10-29 | General Semiconductor, Inc. | Trench MOSFET with double-diffused body profile |
JP2002280553A (ja) * | 2001-03-19 | 2002-09-27 | Toshiba Corp | 半導体装置及びその製造方法 |
JP2003101027A (ja) | 2001-09-27 | 2003-04-04 | Toshiba Corp | 半導体装置及びその製造方法 |
JP4183620B2 (ja) | 2001-11-30 | 2008-11-19 | 新電元工業株式会社 | 半導体装置およびその製造方法 |
JP2003258255A (ja) * | 2002-02-28 | 2003-09-12 | Toko Inc | Mosトランジスタとその製造方法 |
US6784505B2 (en) * | 2002-05-03 | 2004-08-31 | Fairchild Semiconductor Corporation | Low voltage high density trench-gated power device with uniformly doped channel and its edge termination technique |
US6861701B2 (en) * | 2003-03-05 | 2005-03-01 | Advanced Analogic Technologies, Inc. | Trench power MOSFET with planarized gate bus |
JP4059846B2 (ja) * | 2003-12-26 | 2008-03-12 | Necエレクトロニクス株式会社 | 半導体装置及びその製造方法 |
JP4829473B2 (ja) * | 2004-01-21 | 2011-12-07 | オンセミコンダクター・トレーディング・リミテッド | 絶縁ゲート型半導体装置およびその製造方法 |
JP4860122B2 (ja) * | 2004-06-25 | 2012-01-25 | 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 |
JP2006080177A (ja) * | 2004-09-08 | 2006-03-23 | Sanyo Electric Co Ltd | 半導体装置およびその製造方法 |
JP4440188B2 (ja) * | 2005-01-19 | 2010-03-24 | パナソニック株式会社 | 半導体装置の製造方法 |
-
2006
- 2006-09-28 JP JP2006264480A patent/JP5198752B2/ja not_active Expired - Fee Related
-
2007
- 2007-09-27 US US11/905,078 patent/US7776693B2/en not_active Expired - Fee Related
- 2007-09-28 TW TW096136254A patent/TWI362705B/zh not_active IP Right Cessation
- 2007-09-28 CN CN2007101613722A patent/CN101154598B/zh not_active Expired - Fee Related
-
2010
- 2010-06-25 US US12/801,806 patent/US7947556B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN101154598A (zh) | 2008-04-02 |
TWI362705B (en) | 2012-04-21 |
JP2008085134A (ja) | 2008-04-10 |
US20080081422A1 (en) | 2008-04-03 |
CN101154598B (zh) | 2011-02-09 |
US7776693B2 (en) | 2010-08-17 |
TW200832563A (en) | 2008-08-01 |
US7947556B2 (en) | 2011-05-24 |
US20100267211A1 (en) | 2010-10-21 |
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