JP2017168676A - 炭化珪素半導体素子および炭化珪素半導体素子の製造方法 - Google Patents
炭化珪素半導体素子および炭化珪素半導体素子の製造方法 Download PDFInfo
- Publication number
- JP2017168676A JP2017168676A JP2016053120A JP2016053120A JP2017168676A JP 2017168676 A JP2017168676 A JP 2017168676A JP 2016053120 A JP2016053120 A JP 2016053120A JP 2016053120 A JP2016053120 A JP 2016053120A JP 2017168676 A JP2017168676 A JP 2017168676A
- Authority
- JP
- Japan
- Prior art keywords
- silicon carbide
- carbide semiconductor
- semiconductor substrate
- electrode
- type
- 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
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 121
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 120
- 239000004065 semiconductor Substances 0.000 title claims abstract description 72
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000000758 substrate Substances 0.000 claims abstract description 87
- 229910005883 NiSi Inorganic materials 0.000 claims abstract description 37
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 27
- 238000000605 extraction Methods 0.000 claims abstract description 16
- 229910021334 nickel silicide Inorganic materials 0.000 claims abstract description 9
- RUFLMLWJRZAWLJ-UHFFFAOYSA-N nickel silicide Chemical compound [Ni]=[Si]=[Ni] RUFLMLWJRZAWLJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 47
- 238000000034 method Methods 0.000 claims description 40
- 238000000137 annealing Methods 0.000 claims description 23
- 229910052759 nickel Inorganic materials 0.000 claims description 14
- 229910052710 silicon Inorganic materials 0.000 claims description 14
- 239000010703 silicon Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 claims description 9
- 229910021332 silicide Inorganic materials 0.000 claims description 9
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- 239000011737 fluorine Substances 0.000 claims description 4
- 238000001312 dry etching Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 230000007774 longterm Effects 0.000 abstract description 2
- 239000012071 phase Substances 0.000 description 31
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 13
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 12
- 239000011229 interlayer Substances 0.000 description 12
- 239000010410 layer Substances 0.000 description 12
- 238000005468 ion implantation Methods 0.000 description 10
- 238000004151 rapid thermal annealing Methods 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 230000000630 rising effect Effects 0.000 description 9
- 239000012298 atmosphere Substances 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- 229910052814 silicon oxide Inorganic materials 0.000 description 8
- 238000003746 solid phase reaction Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000005229 chemical vapour deposition Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 5
- 238000000206 photolithography Methods 0.000 description 5
- 229910021484 silicon-nickel alloy Inorganic materials 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- -1 phosphorus ions Chemical class 0.000 description 4
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004381 surface treatment Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003917 TEM image Methods 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- HIVGXUNKSAJJDN-UHFFFAOYSA-N [Si].[P] Chemical compound [Si].[P] HIVGXUNKSAJJDN-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/0445—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising crystalline silicon carbide
- H01L21/048—Making electrodes
- H01L21/0485—Ohmic electrodes
-
- 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
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/16—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table
- H01L29/1608—Silicon carbide
-
- 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
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/45—Ohmic electrodes
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Electrodes Of Semiconductors (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
【解決手段】炭化珪素半導体素子は、炭化珪素半導体基板1と、炭化珪素半導体基板1の表面に設けられ、オーミックコンタクト8として機能するニッケルシリサイド膜と、オーミックコンタクト8と炭化珪素半導体基板1と異なる側で接合する取り出し電極9と、を有する。オーミックコンタクト8は、炭化珪素半導体基板1側が主にNiSi相からなり、取り出し電極9側が主にNi2Si相からなり、かつ、オーミックコンタクト8は、炭化珪素半導体基板1側で炭素を含有し、取り出し電極9側で炭素を含まない。
【選択図】図1
Description
本発明の実施の形態1にかかる炭化珪素半導体素子の製造方法について、p型ウェル領域とn型ソース領域とをそれぞれイオン注入で形成する二重注入(Double Implante)プロセスによって二重注入型MOSFET(DIMOSFET)を作製(製造)する場合を例に説明する。
比較例として、オーミックコンタクトホール開口部の表面処理を行った素子を作製した。実施例1と同様に、1μmの厚さのPSG(Phosphorus Silicon Glass)膜をフォトリソグラフィによりパターニングし、ゲート電極6を被覆する領域に、層間絶縁膜7を形成した。この後に、室温の0.5wt%弗酸に1分間基板を浸漬し、オーミックコンタクト形成面の酸化膜を除去する処理を行った。また、オーミックコンタクト電極以降は、実施例1と同様の方法で実施した。
2 p型ウェル領域
3 p型コンタクト領域
4 n型ソース領域
5 ゲート絶縁膜
6 ゲート電極
7 層間絶縁膜
8 オーミック電極
9 取り出し電極
10 裏面電極
Claims (3)
- 炭化珪素半導体基板と、
前記炭化珪素半導体基板の表面に設けられ、コンタクト電極として機能するニッケルシリサイド膜と、
前記コンタクト電極と前記炭化珪素半導体基板と異なる側で接合する取り出し電極と、を有し、
前記コンタクト電極は、前記炭化珪素半導体基板側が主にNiSi相からなり、前記取り出し電極側が主にNi2Si相からなり、かつ、前記コンタクト電極は、前記炭化珪素半導体基板側で炭素を含有し、前記取り出し電極側で炭素を含まないことを特徴とする炭化珪素半導体素子。 - 炭化珪素半導体基板の表面に形成された絶縁膜を弗素系ガスおよび希ガスを用いたドライエッチングにより除去する工程と、
前記炭化珪素半導体基板の表面に20at%以上40at%以下の珪素を含むニッケル膜を選択的に形成する工程と、
前記炭化珪素半導体基板を支持体からの熱伝導により間接的に温度を印加するアニール処理によりシリサイドを形成する工程と、を有し、
前記アニール処理は、700℃よりも高く、850℃以下で行われることを特徴とする炭化珪素半導体素子の製造方法。 - 前記アニール処理は、
400℃までの昇温および保持過程1と、
前記昇温および保持過程1の後に850℃以下までの昇温および保持過程2を有し、
前記昇温および保持過程1の全時間が、前記昇温および保持過程2の全時間に比べて長いことを特徴とする請求項2に記載の炭化珪素半導体素子の製造方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016053120A JP6686581B2 (ja) | 2016-03-16 | 2016-03-16 | 炭化珪素半導体素子および炭化珪素半導体素子の製造方法 |
US15/417,872 US9978598B2 (en) | 2016-03-16 | 2017-01-27 | Silicon carbide semiconductor device and method of manufacturing silicon carbide semiconductor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016053120A JP6686581B2 (ja) | 2016-03-16 | 2016-03-16 | 炭化珪素半導体素子および炭化珪素半導体素子の製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2017168676A true JP2017168676A (ja) | 2017-09-21 |
JP6686581B2 JP6686581B2 (ja) | 2020-04-22 |
Family
ID=59847167
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2016053120A Active JP6686581B2 (ja) | 2016-03-16 | 2016-03-16 | 炭化珪素半導体素子および炭化珪素半導体素子の製造方法 |
Country Status (2)
Country | Link |
---|---|
US (1) | US9978598B2 (ja) |
JP (1) | JP6686581B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020102594A (ja) * | 2018-12-25 | 2020-07-02 | トヨタ自動車株式会社 | 半導体装置の製造方法 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111373508B (zh) * | 2017-11-21 | 2021-12-21 | 美高森美公司 | 用于经减薄的碳化硅器件中欧姆触点的方法和组件 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002093742A (ja) * | 2000-09-18 | 2002-03-29 | National Institute Of Advanced Industrial & Technology | オーミック電極構造体、その製造方法、半導体装置及び半導体装置の製造方法 |
JP2003229565A (ja) * | 2002-02-04 | 2003-08-15 | Mitsubishi Electric Corp | 半導体素子及びその製造方法 |
JP2009188100A (ja) * | 2008-02-05 | 2009-08-20 | Sumitomo Electric Ind Ltd | 炭化珪素半導体装置の製造方法 |
JP2012099598A (ja) * | 2010-11-01 | 2012-05-24 | Sumitomo Electric Ind Ltd | 半導体装置およびその製造方法 |
JP2013058603A (ja) * | 2011-09-08 | 2013-03-28 | Toshiba Corp | 半導体装置および半導体装置の製造方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2911122B2 (ja) | 1988-04-20 | 1999-06-23 | 三洋電機株式会社 | 炭化ケイ素半導体素子のオーミック電極形成方法 |
JP3079851B2 (ja) | 1993-09-28 | 2000-08-21 | 富士電機株式会社 | 炭化けい素電子デバイスの製造方法 |
JP3559971B2 (ja) | 2001-12-11 | 2004-09-02 | 日産自動車株式会社 | 炭化珪素半導体装置およびその製造方法 |
JP4043455B2 (ja) | 2004-05-28 | 2008-02-06 | 東京エレクトロン株式会社 | 液処理装置及び液処理方法 |
-
2016
- 2016-03-16 JP JP2016053120A patent/JP6686581B2/ja active Active
-
2017
- 2017-01-27 US US15/417,872 patent/US9978598B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002093742A (ja) * | 2000-09-18 | 2002-03-29 | National Institute Of Advanced Industrial & Technology | オーミック電極構造体、その製造方法、半導体装置及び半導体装置の製造方法 |
JP2003229565A (ja) * | 2002-02-04 | 2003-08-15 | Mitsubishi Electric Corp | 半導体素子及びその製造方法 |
JP2009188100A (ja) * | 2008-02-05 | 2009-08-20 | Sumitomo Electric Ind Ltd | 炭化珪素半導体装置の製造方法 |
JP2012099598A (ja) * | 2010-11-01 | 2012-05-24 | Sumitomo Electric Ind Ltd | 半導体装置およびその製造方法 |
JP2013058603A (ja) * | 2011-09-08 | 2013-03-28 | Toshiba Corp | 半導体装置および半導体装置の製造方法 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020102594A (ja) * | 2018-12-25 | 2020-07-02 | トヨタ自動車株式会社 | 半導体装置の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JP6686581B2 (ja) | 2020-04-22 |
US9978598B2 (en) | 2018-05-22 |
US20170271157A1 (en) | 2017-09-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6766889B2 (ja) | 半導体装置および半導体装置の製造方法 | |
JP5777455B2 (ja) | 半導体装置および半導体装置の製造方法 | |
JP5525940B2 (ja) | 半導体装置および半導体装置の製造方法 | |
JP7103444B2 (ja) | 炭化珪素半導体素子 | |
JP5144585B2 (ja) | 半導体装置およびその製造方法 | |
JP4291875B2 (ja) | 炭化珪素半導体装置およびその製造方法 | |
JP6222771B2 (ja) | 炭化珪素半導体装置の製造方法 | |
JP7052322B2 (ja) | 炭化珪素半導体装置および炭化珪素半導体装置の製造方法 | |
JP6120525B2 (ja) | 炭化珪素半導体装置 | |
JP5408248B2 (ja) | 炭化珪素半導体装置およびその製造方法 | |
JP2011165902A (ja) | 半導体装置および半導体装置の製造方法 | |
US20190096998A1 (en) | Method for manufacturing semiconductor device | |
JP2017168602A (ja) | 半導体装置および半導体装置の製造方法 | |
JP5885284B2 (ja) | 炭化珪素半導体素子および炭化珪素半導体素子の製造方法 | |
JP6160541B2 (ja) | 炭化珪素半導体装置の製造方法 | |
JP2009043880A (ja) | 炭化珪素半導体装置の製造方法および炭化珪素半導体装置 | |
JP6686581B2 (ja) | 炭化珪素半導体素子および炭化珪素半導体素子の製造方法 | |
JP6395299B2 (ja) | 炭化珪素半導体素子及び炭化珪素半導体素子の製造方法 | |
JP6870286B2 (ja) | 炭化珪素半導体装置の製造方法 | |
JP6253133B2 (ja) | 炭化珪素半導体装置の製造方法 | |
JP6724444B2 (ja) | 炭化珪素半導体素子および炭化珪素半導体素子の製造方法 | |
JP6822088B2 (ja) | 炭化珪素半導体装置および炭化珪素半導体装置の製造方法 | |
JP2017168687A (ja) | 炭化珪素半導体装置および炭化珪素半導体装置の製造方法 | |
JP7501000B2 (ja) | 半導体装置 | |
JP2022017550A (ja) | 炭化珪素半導体装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20190214 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20191009 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20191029 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20191216 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20200303 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20200316 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6686581 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |