JP7458257B2 - 半導体装置、インバータ回路、駆動装置、車両、及び、昇降機 - Google Patents
半導体装置、インバータ回路、駆動装置、車両、及び、昇降機 Download PDFInfo
- Publication number
- JP7458257B2 JP7458257B2 JP2020118754A JP2020118754A JP7458257B2 JP 7458257 B2 JP7458257 B2 JP 7458257B2 JP 2020118754 A JP2020118754 A JP 2020118754A JP 2020118754 A JP2020118754 A JP 2020118754A JP 7458257 B2 JP7458257 B2 JP 7458257B2
- Authority
- JP
- Japan
- Prior art keywords
- region
- trench
- silicon carbide
- type
- semiconductor device
- 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.)
- Active
Links
- 239000004065 semiconductor Substances 0.000 title claims description 94
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 158
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 155
- 239000012535 impurity Substances 0.000 claims description 90
- 239000010410 layer Substances 0.000 description 87
- 230000005684 electric field Effects 0.000 description 53
- 239000000463 material Substances 0.000 description 38
- 210000000746 body region Anatomy 0.000 description 32
- 238000000034 method Methods 0.000 description 32
- 238000004519 manufacturing process Methods 0.000 description 31
- 230000000052 comparative effect Effects 0.000 description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 17
- 229910052814 silicon oxide Inorganic materials 0.000 description 17
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 11
- 238000010586 diagram Methods 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 8
- 239000011229 interlayer Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 238000005229 chemical vapour deposition Methods 0.000 description 5
- 238000005468 ion implantation Methods 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 230000006378 damage Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 239000010936 titanium Substances 0.000 description 4
- 229910052720 vanadium Inorganic materials 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- -1 aluminum ion Chemical class 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001020 plasma etching Methods 0.000 description 3
- 238000004645 scanning capacitance microscopy Methods 0.000 description 3
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000002040 relaxant effect Effects 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000005669 field effect Effects 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
- 239000005001 laminate film Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- RUFLMLWJRZAWLJ-UHFFFAOYSA-N nickel silicide Chemical compound [Ni]=[Si]=[Ni] RUFLMLWJRZAWLJ-UHFFFAOYSA-N 0.000 description 1
- 229910021334 nickel silicide Inorganic materials 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000006467 substitution reaction 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 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
- H01L29/12—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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
- B60L13/006—Electric propulsion adapted for monorail vehicles, suspension vehicles or rack railways
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L50/00—Electric propulsion with power supplied within the vehicle
- B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
- B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/24—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration
- B66B1/28—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical
- B66B1/30—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor
- B66B1/308—Control systems with regulation, i.e. with retroactive action, for influencing travelling speed, acceleration, or deceleration electrical effective on driving gear, e.g. acting on power electronics, on inverter or rectifier controlled motor with AC powered elevator drive
-
- 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
- H01L21/0475—Changing the shape of the semiconductor body, e.g. forming recesses
-
- 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
- H01L21/049—Conductor-insulator-semiconductor electrodes, e.g. MIS contacts
-
- 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
- H01L29/0603—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 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
- H01L29/02—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
- H01L29/08—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 carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/0843—Source or drain regions of field-effect devices
- H01L29/0847—Source or drain regions of field-effect devices of field-effect transistors with insulated gate
- H01L29/0852—Source or drain regions of field-effect devices of field-effect transistors with insulated gate of DMOS transistors
- H01L29/0873—Drain regions
- H01L29/0878—Impurity concentration or distribution
-
- 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
- H01L29/417—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
- H01L29/41725—Source or drain electrodes for field effect devices
- H01L29/41741—Source or drain electrodes for field effect devices for vertical or pseudo-vertical devices
-
- 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
- H01L29/417—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
- H01L29/41725—Source or drain electrodes for field effect devices
- H01L29/41766—Source or drain electrodes for field effect devices with at least part of the source or drain electrode having contact below the semiconductor surface, e.g. the source or drain electrode formed at least partially in a groove or with inclusions of conductor inside the semiconductor
-
- 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
- H01L29/417—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
- H01L29/41725—Source or drain electrodes for field effect devices
- H01L29/41775—Source or drain electrodes for field effect devices characterised by the proximity or the relative position of the source or drain electrode and the gate electrode, e.g. the source or drain electrode separated from the gate electrode by side-walls or spreading around or above the 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
- H01L29/66007—Multistep manufacturing processes
- H01L29/66053—Multistep manufacturing processes of devices having a semiconductor body comprising crystalline silicon carbide
- H01L29/66068—Multistep manufacturing processes of devices having a semiconductor body comprising crystalline silicon carbide 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
-
- 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
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61C—LOCOMOTIVES; MOTOR RAILCARS
- B61C9/00—Locomotives or motor railcars characterised by the type of transmission system used; Transmission systems specially adapted for locomotives or motor railcars
- B61C9/38—Transmission systems in or for locomotives or motor railcars with electric motor propulsion
-
- 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
- H01L21/0455—Making n or p doped regions or layers, e.g. using diffusion
- H01L21/046—Making n or p doped regions or layers, e.g. using diffusion using ion implantation
- H01L21/047—Making n or p doped regions or layers, e.g. using diffusion using ion implantation characterised by the angle between the ion beam and the crystal planes or the main crystal surface
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Electromagnetism (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electrodes Of Semiconductors (AREA)
Description
第1の実施形態の半導体装置は、第1の方向及び第1の方向に直交する第2の方向に平行な第1の面と、第1の面に対向する第2の面と、を有する炭化珪素層であって、第1の面の側に位置し、第1の方向に延びる第1のトレンチと、第1の面の側に位置し、第1のトレンチに対して第2の方向に位置する第2のトレンチと、第1の面の側に位置し、第1のトレンチに対して第2の方向に位置し、第2のトレンチに対して第1の方向に位置する第3のトレンチと、n型の第1の炭化珪素領域と、第1の炭化珪素領域と第1の面との間に位置するp型の第2の炭化珪素領域と、第2の炭化珪素領域と第1の面との間に位置するn型の第3の炭化珪素領域と、第1の炭化珪素領域と第2のトレンチとの間に位置するp型の第4の炭化珪素領域と、第1の炭化珪素領域と第3のトレンチとの間に位置するp型の第5の炭化珪素領域と、を含む炭化珪素層と、第1のトレンチの中に位置するゲート電極と、ゲート電極と炭化珪素層との間に位置するゲート絶縁層と、炭化珪素層の第1の面の側に位置し、一部が第2のトレンチの中に位置する第1の電極と、炭化珪素層の第2の面の側に位置する第2の電極と、を備える。そして、第1の炭化珪素領域の一部は第2のトレンチと第3のトレンチとの間に位置する。
第2の実施形態の半導体装置は、第1の炭化珪素領域が、第1の領域と、第2の領域と、第3の領域を含み、第2の領域は第1の領域と第2の炭化珪素領域との間及び第1のトレンチと第2のトレンチとの間に位置し、第3の領域は第1の領域と第2の炭化珪素領域との間及び第2のトレンチと第3のトレンチとの間に位置し、第2の領域のn型不純物濃度は、第1の領域のn型不純物濃度よりも高く、第3の領域のn型不純物濃度は、第1の領域のn型不純物濃度よりも高い点で、第1の実施形態の半導体装置と異なる。以下、第1の実施形態と重複する内容については、一部記述を省略する。
第3の実施形態のインバータ回路及び駆動装置は、第1の実施形態の半導体装置を備える駆動装置である。
第4の実施形態の車両は、第1の実施形態の半導体装置を備える車両である。
第5の実施形態の車両は、第1の実施形態の半導体装置を備える車両である。
第6の実施形態の昇降機は、第1の実施形態の半導体装置を備える昇降機である。
12 ソース電極(第1の電極)
12a コンタクト領域(一部)
14 ドレイン電極(第2の電極)
16 ゲート電極
18 ゲート絶縁層
21 ゲートトレンチ(第1のトレンチ)
22 コンタクトトレンチ
22a コンタクトトレンチ(第2のトレンチ)
22b コンタクトトレンチ(第3のトレンチ)
26 ドリフト領域(第1の炭化珪素領域)
26a 第1の領域
26b 第2の領域
26c 第3の領域
28 ボディ領域(第2の炭化珪素領域)
30 ソース領域(第3の炭化珪素領域)
32 電界緩和領域
32a 電界緩和領域(第4の炭化珪素領域)
32b 電界緩和領域(第5の炭化珪素領域)
36 ゲートトレンチ底部領域(第6の炭化珪素領域)
100 MOSFET(半導体装置)
150 インバータ回路
200 MOSFET(半導体装置)
1000 駆動装置
1100 車両
1200 車両
1300 昇降機
P1 第1の面
P2 第2の面
d1 第1の距離
d2 第2の距離
Claims (11)
- 第1の方向及び前記第1の方向に直交する第2の方向に平行な第1の面と、前記第1の面に対向する第2の面と、を有する炭化珪素層であって、
前記第1の面の側に位置し、前記第1の方向に延びる第1のトレンチと、
前記第1の面の側に位置し、前記第1のトレンチに対して前記第2の方向に位置する第2のトレンチと、
前記第1の面の側に位置し、前記第1のトレンチに対して前記第2の方向に位置し、前記第2のトレンチに対して前記第1の方向に位置する第3のトレンチと、
n型の第1の炭化珪素領域と、
前記第1の炭化珪素領域と前記第1の面との間に位置するp型の第2の炭化珪素領域と、
前記第2の炭化珪素領域と前記第1の面との間に位置するn型の第3の炭化珪素領域と、
前記第1の炭化珪素領域と前記第2のトレンチとの間に位置するp型の第4の炭化珪素領域と、
前記第1の炭化珪素領域と前記第3のトレンチとの間に位置するp型の第5の炭化珪素領域と、
を含む炭化珪素層と、
前記第1のトレンチの中に位置するゲート電極と、
前記ゲート電極と前記炭化珪素層との間に位置するゲート絶縁層と、
前記炭化珪素層の前記第1の面の側に位置し、一部が前記第2のトレンチの中に位置する第1の電極と、
前記炭化珪素層の前記第2の面の側に位置する第2の電極と、
を備え、
前記第1の炭化珪素領域の一部は前記第2のトレンチと前記第3のトレンチとの間に位置し、
前記第1の炭化珪素領域の前記一部は、前記第4の炭化珪素領域と前記第5の炭化珪素領域との間に位置する、半導体装置。 - 前記炭化珪素層は、前記第1の炭化珪素領域と前記第1のトレンチとの間に位置するp型の第6の炭化珪素領域を含む請求項1記載の半導体装置。
- 前記第2のトレンチの前記第1の方向の長さは、前記第2のトレンチの前記第2の方向の長さよりも長い請求項1又は請求項2記載の半導体装置。
- 第1の方向及び前記第1の方向に直交する第2の方向に平行な第1の面と、前記第1の面に対向する第2の面と、を有する炭化珪素層であって、
前記第1の面の側に位置し、前記第1の方向に延びる第1のトレンチと、
前記第1の面の側に位置し、前記第1のトレンチに対して前記第2の方向に位置する第2のトレンチと、
前記第1の面の側に位置し、前記第1のトレンチに対して前記第2の方向に位置し、前記第2のトレンチに対して前記第1の方向に位置する第3のトレンチと、
n型の第1の炭化珪素領域と、
前記第1の炭化珪素領域と前記第1の面との間に位置するp型の第2の炭化珪素領域と、
前記第2の炭化珪素領域と前記第1の面との間に位置するn型の第3の炭化珪素領域と、
前記第1の炭化珪素領域と前記第2のトレンチとの間に位置するp型の第4の炭化珪素領域と、
前記第1の炭化珪素領域と前記第3のトレンチとの間に位置するp型の第5の炭化珪素領域と、
を含む炭化珪素層と、
前記第1のトレンチの中に位置するゲート電極と、
前記ゲート電極と前記炭化珪素層との間に位置するゲート絶縁層と、
前記炭化珪素層の前記第1の面の側に位置し、一部が前記第2のトレンチの中に位置する第1の電極と、
前記炭化珪素層の前記第2の面の側に位置する第2の電極と、
を備え、
前記第1の炭化珪素領域の一部は前記第2のトレンチと前記第3のトレンチとの間に位置し、
前記第1のトレンチと前記第2のトレンチとの間の第1の距離よりも、前記第2のトレンチと前記第3のトレンチの間の第2の距離が大きい、半導体装置。 - 前記第2の距離は前記第1の距離の3倍以下である請求項4記載の半導体装置。
- 前記第1の炭化珪素領域は、第1の領域と、第2の領域と、第3の領域を含み、
前記第2の領域は前記第1の領域と前記第2の炭化珪素領域との間及び前記第1のトレンチと前記第2のトレンチとの間に位置し、
前記第3の領域は前記第1の領域と前記第2の炭化珪素領域との間及び前記第2のトレンチと前記第3のトレンチとの間に位置し、
前記第2の領域のn型不純物濃度は、前記第1の領域のn型不純物濃度よりも高く、
前記第3の領域のn型不純物濃度は、前記第1の領域のn型不純物濃度よりも高い請求項1ないし請求項5いずれか一項記載の半導体装置。 - 第1の方向及び前記第1の方向に直交する第2の方向に平行な第1の面と、前記第1の面に対向する第2の面と、を有する炭化珪素層であって、
前記第1の面の側に位置し、前記第1の方向に延びる第1のトレンチと、
前記第1の面の側に位置し、前記第1のトレンチに対して前記第2の方向に位置する第2のトレンチと、
前記第1の面の側に位置し、前記第1のトレンチに対して前記第2の方向に位置し、前記第2のトレンチに対して前記第1の方向に位置する第3のトレンチと、
n型の第1の炭化珪素領域と、
前記第1の炭化珪素領域と前記第1の面との間に位置するp型の第2の炭化珪素領域と、
前記第2の炭化珪素領域と前記第1の面との間に位置するn型の第3の炭化珪素領域と、
前記第1の炭化珪素領域と前記第2のトレンチとの間に位置するp型の第4の炭化珪素領域と、
前記第1の炭化珪素領域と前記第3のトレンチとの間に位置するp型の第5の炭化珪素領域と、
を含む炭化珪素層と、
前記第1のトレンチの中に位置するゲート電極と、
前記ゲート電極と前記炭化珪素層との間に位置するゲート絶縁層と、
前記炭化珪素層の前記第1の面の側に位置し、一部が前記第2のトレンチの中に位置する第1の電極と、
前記炭化珪素層の前記第2の面の側に位置する第2の電極と、
を備え、
前記第1の炭化珪素領域の一部は前記第2のトレンチと前記第3のトレンチとの間に位置し、
前記第1の炭化珪素領域は、第1の領域と、第2の領域と、第3の領域を含み、
前記第2の領域は前記第1の領域と前記第2の炭化珪素領域との間及び前記第1のトレンチと前記第2のトレンチとの間に位置し、
前記第3の領域は前記第1の領域と前記第2の炭化珪素領域との間及び前記第2のトレンチと前記第3のトレンチとの間に位置し、
前記第2の領域のn型不純物濃度は、前記第1の領域のn型不純物濃度よりも高く、
前記第3の領域のn型不純物濃度は、前記第1の領域のn型不純物濃度よりも高く、
前記第3の領域のn型不純物濃度は、前記第2の領域のn型不純物濃度よりも高い、半導体装置。 - 請求項1ないし請求項7いずれか一項記載の半導体装置を備えるインバータ回路。
- 請求項1ないし請求項7いずれか一項記載の半導体装置を備える駆動装置。
- 請求項1ないし請求項7いずれか一項記載の半導体装置を備える車両。
- 請求項1ないし請求項7いずれか一項記載の半導体装置を備える昇降機。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020118754A JP7458257B2 (ja) | 2020-07-09 | 2020-07-09 | 半導体装置、インバータ回路、駆動装置、車両、及び、昇降機 |
US17/191,989 US11495665B2 (en) | 2020-07-09 | 2021-03-04 | Semiconductor device, inverter circuit, drive device, vehicle, and elevator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020118754A JP7458257B2 (ja) | 2020-07-09 | 2020-07-09 | 半導体装置、インバータ回路、駆動装置、車両、及び、昇降機 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2022015727A JP2022015727A (ja) | 2022-01-21 |
JP7458257B2 true JP7458257B2 (ja) | 2024-03-29 |
Family
ID=79173879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2020118754A Active JP7458257B2 (ja) | 2020-07-09 | 2020-07-09 | 半導体装置、インバータ回路、駆動装置、車両、及び、昇降機 |
Country Status (2)
Country | Link |
---|---|
US (1) | US11495665B2 (ja) |
JP (1) | JP7458257B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2023113387A (ja) | 2022-02-03 | 2023-08-16 | 株式会社リコー | 定着装置、画像形成装置 |
CN114792734A (zh) * | 2022-06-22 | 2022-07-26 | 深圳芯能半导体技术有限公司 | 一种双沟槽碳化硅mosfet及其制备方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011091086A (ja) | 2009-10-20 | 2011-05-06 | Mitsubishi Electric Corp | 半導体装置 |
JP2017055005A (ja) | 2015-09-11 | 2017-03-16 | 株式会社東芝 | 半導体装置 |
JP2018014455A (ja) | 2016-07-22 | 2018-01-25 | 株式会社東芝 | 半導体装置、半導体装置の製造方法、インバータ回路、駆動装置、車両、及び、昇降機 |
JP2018125331A (ja) | 2017-01-30 | 2018-08-09 | 株式会社東芝 | 半導体装置及びその製造方法 |
JP2019216224A (ja) | 2018-06-14 | 2019-12-19 | 富士電機株式会社 | 半導体装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6077380B2 (ja) | 2013-04-24 | 2017-02-08 | トヨタ自動車株式会社 | 半導体装置 |
JP6197995B2 (ja) | 2013-08-23 | 2017-09-20 | 富士電機株式会社 | ワイドバンドギャップ絶縁ゲート型半導体装置 |
JP6729523B2 (ja) | 2017-08-31 | 2020-07-22 | 株式会社デンソー | 炭化珪素半導体装置およびその製造方法 |
JP7099369B2 (ja) | 2018-03-20 | 2022-07-12 | 株式会社デンソー | 半導体装置およびその製造方法 |
-
2020
- 2020-07-09 JP JP2020118754A patent/JP7458257B2/ja active Active
-
2021
- 2021-03-04 US US17/191,989 patent/US11495665B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011091086A (ja) | 2009-10-20 | 2011-05-06 | Mitsubishi Electric Corp | 半導体装置 |
JP2017055005A (ja) | 2015-09-11 | 2017-03-16 | 株式会社東芝 | 半導体装置 |
JP2018014455A (ja) | 2016-07-22 | 2018-01-25 | 株式会社東芝 | 半導体装置、半導体装置の製造方法、インバータ回路、駆動装置、車両、及び、昇降機 |
JP2018125331A (ja) | 2017-01-30 | 2018-08-09 | 株式会社東芝 | 半導体装置及びその製造方法 |
JP2019216224A (ja) | 2018-06-14 | 2019-12-19 | 富士電機株式会社 | 半導体装置 |
Also Published As
Publication number | Publication date |
---|---|
US20220013640A1 (en) | 2022-01-13 |
JP2022015727A (ja) | 2022-01-21 |
US11495665B2 (en) | 2022-11-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6871058B2 (ja) | 半導体装置、インバータ回路、駆動装置、車両、及び、昇降機 | |
US10199466B1 (en) | Semiconductor device, method for manufacturing semiconductor device, inverter circuit, driving device, vehicle, and elevator | |
JP7278914B2 (ja) | 半導体装置、半導体装置の製造方法、インバータ回路、駆動装置、車両、及び、昇降機 | |
US11411084B2 (en) | Semiconductor device, inverter circuit, drive device, vehicle, and elevator | |
US10763354B2 (en) | Semiconductor device, inverter circuit, driving device, vehicle, and elevator | |
CN112310216A (zh) | 半导体装置、逆变器电路、驱动装置、车辆及升降机 | |
JP7458217B2 (ja) | 半導体装置、半導体装置の製造方法、インバータ回路、駆動装置、車両、及び、昇降機 | |
JP7458257B2 (ja) | 半導体装置、インバータ回路、駆動装置、車両、及び、昇降機 | |
US11201238B2 (en) | Semiconductor device, method of manufacturing semiconductor device, inverter circuit, driving device, vehicle, and elevator | |
US11276751B2 (en) | Semiconductor device, inverter circuit, driving device, vehicle, and elevator | |
US11398556B2 (en) | Semiconductor device, inverter circuit, drive device, vehicle, and elevator | |
JP7297654B2 (ja) | 半導体装置、インバータ回路、駆動装置、車両、及び、昇降機 | |
US11069803B2 (en) | Semiconductor device, method of manufacturing semiconductor device, inverter circuit, driving device, vehicle, and elevator | |
JP7321820B2 (ja) | 半導体装置、インバータ回路、駆動装置、車両、及び、昇降機 | |
US11764276B2 (en) | Semiconductor device, inverter circuit, drive device, vehicle, and elevator | |
US20230299192A1 (en) | Semiconductor device, semiconductor device manufacturing method, inverter circuit, drive device, vehicle, and elevator | |
US11201210B2 (en) | Semiconductor device, inverter circuit, drive device, vehicle, and elevator | |
JP2023043336A (ja) | 半導体装置、半導体装置の製造方法、インバータ回路、駆動装置、車両、及び、昇降機 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20210604 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20210706 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20221005 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20230921 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20230926 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20231121 |
|
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: 20240220 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20240318 |
|
R151 | Written notification of patent or utility model registration |
Ref document number: 7458257 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R151 |