JP5091487B2 - 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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- JP5091487B2 JP5091487B2 JP2007001543A JP2007001543A JP5091487B2 JP 5091487 B2 JP5091487 B2 JP 5091487B2 JP 2007001543 A JP2007001543 A JP 2007001543A JP 2007001543 A JP2007001543 A JP 2007001543A JP 5091487 B2 JP5091487 B2 JP 5091487B2
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- 239000004065 semiconductor Substances 0.000 title claims description 46
- 238000004519 manufacturing process Methods 0.000 title claims description 26
- 238000000034 method Methods 0.000 claims description 21
- 238000005530 etching Methods 0.000 claims description 17
- 239000004020 conductor Substances 0.000 claims description 8
- 239000011810 insulating material Substances 0.000 claims description 7
- 238000001039 wet etching Methods 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- 238000001312 dry etching Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 63
- 239000011229 interlayer Substances 0.000 description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 13
- 229910052814 silicon oxide Inorganic materials 0.000 description 13
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 238000000206 photolithography Methods 0.000 description 9
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 9
- 229920005591 polysilicon Polymers 0.000 description 9
- 238000005229 chemical vapour deposition Methods 0.000 description 8
- 239000004642 Polyimide Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 7
- 229920001721 polyimide Polymers 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 4
- 238000005468 ion implantation Methods 0.000 description 4
- 238000001020 plasma etching Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
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Classifications
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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
- H01L29/66727—Vertical DMOS transistors, i.e. VDMOS transistors with a step of recessing the source electrode
-
- 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
-
- 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
- H01L29/66—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
- H01L29/0657—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
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- 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)
- Manufacturing & Machinery (AREA)
- Electrodes Of Semiconductors (AREA)
Description
Claims (3)
- 半導体層の同一の面に、第1のトレンチと、前記第1のトレンチよりも幅の広い第2のトレンチと、前記第2のトレンチよりも幅の広い第3のトレンチを同時に形成する工程と、
前記半導体層上の表面に酸化膜を形成する工程と、
前記酸化膜が形成された前記半導体層上にゲート電極となる導電性材料を成膜することにより、前記第2のトレンチ及び前記第3のトレンチを埋没させることなく、前記第1のトレンチを前記導電性材料により埋没させる工程と、
前記第1のトレンチ内に前記導電性材料を残したまま、前記第2のトレンチ及び前記第3のトレンチ内に成膜された前記導電性材料をエッチング除去する工程と、
前記酸化膜が形成された前記半導体層上に埋込絶縁層となる絶縁材料を成膜することにより、前記第3のトレンチを埋没させることなく、前記第2のトレンチを前記絶縁材料により埋没させる工程と、
前記第2のトレンチ内に前記絶縁材料を残したまま、前記第3のトレンチ内に成膜された前記絶縁材料及び前記酸化膜をエッチング除去する工程と、
前記半導体層上に電極膜となる金属材料を成膜することにより、少なくとも前記第3のトレンチ内の表面を前記金属材料により覆う工程と、
を備えたことを特徴とする半導体装置の製造方法。 - 前記エッチングは、等方性エッチングであることを特徴とする請求項1に記載の半導体装置の製造方法。
- 前記エッチングは、ウエットエッチング、または、ケミカルドライエッチングであることを特徴とする請求項1に記載の半導体装置の製造方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007001543A JP5091487B2 (ja) | 2007-01-09 | 2007-01-09 | 半導体装置の製造方法 |
US11/968,403 US7910440B2 (en) | 2007-01-09 | 2008-01-02 | Semiconductor device and method for making the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007001543A JP5091487B2 (ja) | 2007-01-09 | 2007-01-09 | 半導体装置の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008171887A JP2008171887A (ja) | 2008-07-24 |
JP5091487B2 true JP5091487B2 (ja) | 2012-12-05 |
Family
ID=39593514
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007001543A Expired - Fee Related JP5091487B2 (ja) | 2007-01-09 | 2007-01-09 | 半導体装置の製造方法 |
Country Status (2)
Country | Link |
---|---|
US (1) | US7910440B2 (ja) |
JP (1) | JP5091487B2 (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9947770B2 (en) | 2007-04-03 | 2018-04-17 | Vishay-Siliconix | Self-aligned trench MOSFET and method of manufacture |
US9484451B2 (en) | 2007-10-05 | 2016-11-01 | Vishay-Siliconix | MOSFET active area and edge termination area charge balance |
US9425306B2 (en) * | 2009-08-27 | 2016-08-23 | Vishay-Siliconix | Super junction trench power MOSFET devices |
US9443974B2 (en) | 2009-08-27 | 2016-09-13 | Vishay-Siliconix | Super junction trench power MOSFET device fabrication |
JP5520024B2 (ja) * | 2009-12-09 | 2014-06-11 | ルネサス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 |
JP2011124464A (ja) * | 2009-12-14 | 2011-06-23 | Toshiba Corp | 半導体装置及びその製造方法 |
US20110291263A1 (en) * | 2010-05-28 | 2011-12-01 | Texas Instruments Incorporated | Ic having dielectric polymeric coated protruding features having wet etched exposed tips |
US8652933B2 (en) * | 2010-11-11 | 2014-02-18 | International Business Machines Corporation | Semiconductor structure having wide and narrow deep trenches with different materials |
US9842911B2 (en) | 2012-05-30 | 2017-12-12 | Vishay-Siliconix | Adaptive charge balanced edge termination |
TWI553855B (zh) * | 2013-05-06 | 2016-10-11 | 台灣茂矽電子股份有限公司 | 功率半導體及其製造方法 |
JP6135364B2 (ja) * | 2013-07-26 | 2017-05-31 | 住友電気工業株式会社 | 炭化珪素半導体装置およびその製造方法 |
DE102013108518B4 (de) * | 2013-08-07 | 2016-11-24 | Infineon Technologies Ag | Halbleitervorrichtung und verfahren zum herstellen derselben |
US9887259B2 (en) | 2014-06-23 | 2018-02-06 | Vishay-Siliconix | Modulated super junction power MOSFET devices |
JP6385755B2 (ja) * | 2014-08-08 | 2018-09-05 | 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 |
CN115483211A (zh) | 2014-08-19 | 2022-12-16 | 维西埃-硅化物公司 | 电子电路 |
WO2016028944A1 (en) | 2014-08-19 | 2016-02-25 | Vishay-Siliconix | Super-junction metal oxide semiconductor field effect transistor |
US10840365B2 (en) * | 2016-12-09 | 2020-11-17 | Kyushu Institute Of Technology | Insulated gate bipolar transistor device, manufacturing method for semiconductor device, and manufacturing method for insulated gate bipolar transistor device |
CN115148812A (zh) * | 2021-03-30 | 2022-10-04 | 无锡华润上华科技有限公司 | 半导体器件及其制造方法 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3031282B2 (ja) * | 1997-03-31 | 2000-04-10 | 日本電気株式会社 | 半導体装置 |
JP3679954B2 (ja) * | 1999-09-24 | 2005-08-03 | 株式会社東芝 | 半導体装置 |
KR100428805B1 (ko) * | 2001-08-09 | 2004-04-28 | 삼성전자주식회사 | 트렌치 소자분리 구조체 및 그 형성 방법 |
US6621107B2 (en) * | 2001-08-23 | 2003-09-16 | General Semiconductor, Inc. | Trench DMOS transistor with embedded trench schottky rectifier |
JP4024503B2 (ja) * | 2001-09-19 | 2007-12-19 | 株式会社東芝 | 半導体装置及びその製造方法 |
US6818947B2 (en) * | 2002-09-19 | 2004-11-16 | Fairchild Semiconductor Corporation | Buried gate-field termination structure |
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 |
-
2007
- 2007-01-09 JP JP2007001543A patent/JP5091487B2/ja not_active Expired - Fee Related
-
2008
- 2008-01-02 US US11/968,403 patent/US7910440B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2008171887A (ja) | 2008-07-24 |
US20080164517A1 (en) | 2008-07-10 |
US7910440B2 (en) | 2011-03-22 |
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