JP2019110288A - dV/dt制御性を備えたIGBTを製造する方法 - Google Patents
dV/dt制御性を備えたIGBTを製造する方法 Download PDFInfo
- Publication number
- JP2019110288A JP2019110288A JP2018199648A JP2018199648A JP2019110288A JP 2019110288 A JP2019110288 A JP 2019110288A JP 2018199648 A JP2018199648 A JP 2018199648A JP 2018199648 A JP2018199648 A JP 2018199648A JP 2019110288 A JP2019110288 A JP 2019110288A
- Authority
- JP
- Japan
- Prior art keywords
- region
- trench
- trenches
- barrier region
- active
- 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
- 238000004519 manufacturing process Methods 0.000 title abstract description 6
- 230000004888 barrier function Effects 0.000 claims abstract description 257
- 239000004065 semiconductor Substances 0.000 claims abstract description 247
- 239000002019 doping agent Substances 0.000 claims abstract description 74
- 239000000463 material Substances 0.000 claims abstract description 48
- 238000000137 annealing Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims description 93
- 230000007704 transition Effects 0.000 claims description 92
- 238000002513 implantation Methods 0.000 claims description 33
- 239000011241 protective layer Substances 0.000 claims description 32
- 238000012545 processing Methods 0.000 claims description 29
- 230000000295 complement effect Effects 0.000 claims description 4
- 229910052727 yttrium Inorganic materials 0.000 claims description 4
- 239000007943 implant Substances 0.000 description 20
- 239000010410 layer Substances 0.000 description 19
- 238000013461 design Methods 0.000 description 15
- 239000002800 charge carrier Substances 0.000 description 14
- 230000008569 process Effects 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 11
- 239000012212 insulator Substances 0.000 description 11
- 229910002601 GaN Inorganic materials 0.000 description 10
- 230000000670 limiting effect Effects 0.000 description 9
- 230000006870 function Effects 0.000 description 8
- 230000000903 blocking effect Effects 0.000 description 7
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 6
- 238000000151 deposition Methods 0.000 description 6
- 230000008021 deposition Effects 0.000 description 6
- 229910052738 indium Inorganic materials 0.000 description 6
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 6
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 5
- 230000002441 reversible effect Effects 0.000 description 5
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 238000010292 electrical insulation Methods 0.000 description 4
- 229920005591 polysilicon Polymers 0.000 description 4
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 238000001465 metallisation Methods 0.000 description 3
- 238000001020 plasma etching Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- MARUHZGHZWCEQU-UHFFFAOYSA-N 5-phenyl-2h-tetrazole Chemical compound C1=CC=CC=C1C1=NNN=N1 MARUHZGHZWCEQU-UHFFFAOYSA-N 0.000 description 2
- NWAIGJYBQQYSPW-UHFFFAOYSA-N azanylidyneindigane Chemical compound [In]#N NWAIGJYBQQYSPW-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001747 exhibiting effect Effects 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- HZXMRANICFIONG-UHFFFAOYSA-N gallium phosphide Chemical compound [Ga]#P HZXMRANICFIONG-UHFFFAOYSA-N 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000000873 masking effect Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- 229910015900 BF3 Inorganic materials 0.000 description 1
- 229910005540 GaP Inorganic materials 0.000 description 1
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 description 1
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 1
- 229910000661 Mercury cadmium telluride Inorganic materials 0.000 description 1
- KXNLCSXBJCPWGL-UHFFFAOYSA-N [Ga].[As].[In] Chemical compound [Ga].[As].[In] KXNLCSXBJCPWGL-UHFFFAOYSA-N 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 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
- AJGDITRVXRPLBY-UHFFFAOYSA-N aluminum indium Chemical compound [Al].[In] AJGDITRVXRPLBY-UHFFFAOYSA-N 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 239000006117 anti-reflective coating Substances 0.000 description 1
- 229910001423 beryllium ion Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- -1 difluoroboryl Chemical group 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- SBEQWOXEGHQIMW-UHFFFAOYSA-N silicon Chemical compound [Si].[Si] SBEQWOXEGHQIMW-UHFFFAOYSA-N 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/08—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind
- H01L27/082—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including bipolar components only
-
- 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
- H01L29/70—Bipolar devices
- H01L29/72—Transistor-type devices, i.e. able to continuously respond to applied control signals
- H01L29/739—Transistor-type devices, i.e. able to continuously respond to applied control signals controlled by field-effect, e.g. bipolar static induction transistors [BSIT]
- H01L29/7393—Insulated gate bipolar mode transistors, i.e. IGBT; IGT; COMFET
- H01L29/7395—Vertical transistors, e.g. vertical IGBT
- H01L29/7396—Vertical transistors, e.g. vertical IGBT with a non planar surface, e.g. with a non planar gate or with a trench or recess or pillar in the surface of the emitter, base or collector region for improving current density or short circuiting the emitter and base regions
- H01L29/7397—Vertical transistors, e.g. vertical IGBT with a non planar surface, e.g. with a non planar gate or with a trench or recess or pillar in the surface of the emitter, base or collector region for improving current density or short circuiting the emitter and base regions and a gate structure lying on a slanted or vertical surface or formed in a groove, e.g. trench gate IGBT
-
- 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
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/033—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers
- H01L21/0334—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane
- H01L21/0337—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane characterised by the process involved to create the mask, e.g. lift-off masks, sidewalls, or to modify the mask, e.g. pre-treatment, post-treatment
-
- 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
- H01L21/18—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 elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/22—Diffusion of impurity materials, e.g. doping materials, electrode materials, into or out of a semiconductor body, or between semiconductor regions; Interactions between two or more impurities; Redistribution of impurities
- H01L21/225—Diffusion of impurity materials, e.g. doping materials, electrode materials, into or out of a semiconductor body, or between semiconductor regions; Interactions between two or more impurities; Redistribution of impurities using diffusion into or out of a solid from or into a solid phase, e.g. a doped oxide layer
- H01L21/2251—Diffusion into or out of group IV semiconductors
- H01L21/2252—Diffusion into or out of group IV semiconductors using predeposition of impurities into the semiconductor surface, e.g. from a gaseous phase
- H01L21/2253—Diffusion into or out of group IV semiconductors using predeposition of impurities into the semiconductor surface, e.g. from a gaseous phase by ion implantation
-
- 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
- H01L21/18—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 elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
- H01L21/265—Bombardment with radiation with high-energy radiation producing ion implantation
- H01L21/26506—Bombardment with radiation with high-energy radiation producing ion implantation in group IV semiconductors
-
- 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
- H01L21/18—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 elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/324—Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
-
- 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
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8248—Combination of bipolar and field-effect technology
-
- 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]
-
- 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
-
- 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
- H01L29/0603—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
- H01L29/0642—Isolation within the component, i.e. internal isolation
- H01L29/0649—Dielectric regions, e.g. SiO2 regions, air gaps
-
- 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
- H01L29/10—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
- H01L29/402—Field plates
- H01L29/407—Recessed field plates, e.g. trench field plates, buried field plates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—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
- H01L29/41708—Emitter or collector electrodes for bipolar 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
- H01L29/40—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 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
- H01L29/66234—Bipolar junction transistors [BJT]
- H01L29/66325—Bipolar junction transistors [BJT] controlled by field-effect, e.g. insulated gate bipolar transistors [IGBT]
- H01L29/66333—Vertical insulated gate bipolar transistors
- H01L29/66348—Vertical insulated gate bipolar transistors with a recessed gate
-
- 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
- H01L29/70—Bipolar devices
- H01L29/72—Transistor-type devices, i.e. able to continuously respond to applied control signals
- H01L29/739—Transistor-type devices, i.e. able to continuously respond to applied control signals controlled by field-effect, e.g. bipolar static induction transistors [BSIT]
- H01L29/7393—Insulated gate bipolar mode transistors, i.e. IGBT; IGT; COMFET
- H01L29/7395—Vertical transistors, e.g. vertical IGBT
- H01L29/7396—Vertical transistors, e.g. vertical IGBT with a non planar surface, e.g. with a non planar gate or with a trench or recess or pillar in the surface of the emitter, base or collector region for improving current density or short circuiting the emitter and base regions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42372—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the conducting layer, e.g. the length, the sectional shape or the lay-out
- H01L29/4238—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the conducting layer, e.g. the length, the sectional shape or the lay-out characterised by the surface lay-out
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)
- High Energy & Nuclear Physics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Electrodes Of Semiconductors (AREA)
Abstract
Description
G=制御トレンチ14
D=ダミートレンチ15
S=ソーストレンチ16
F=浮遊トレンチ17
k=活性メサ18
o=不活性メサ19
oDoSoSkGkSoSoD
(i)互いに隣接して配置されるパススルー通路1053の2つの任意のパススルー通路間の距離(例えば、前記距離Dx及びDy)は、1mm未満である。
(ii)バリア領域105は、半導体本体10の前記半導体層内に配置され、半導体層は、活性セル領域1−2内で完全且つ独占的に延在し、且つ総量を示し、パススルー通路1053は、前記総量の少なくとも1%且つ最大で50%を形成する。半導体層の残りの量、すなわちバリア領域105のpドープ部分は、第2の導電型の半導体領域によって形成される。
(iii)バリア領域105は、その通路1053にもかかわらず、活性セル領域1−2の複数のIGBTセル1−1内に含まれる不活性メサ19を互いに接続する。
(iv)通路1053は、活性セル領域1−2の活性メサ18の少なくともサブセットと横方向にオーバーラップする(例えば、1つ又は複数の通路1053は、ソース領域101の少なくともサブセットと横方向にオーバーラップするように位置付け及び/又は寸法の決定が行われる)。
(v)通路1053は、活性セル領域1−2の制御トレンチ14の少なくともサブセットと横方向にオーバーラップする。
(vi)バリア領域105は、完全且つ独占的に活性セル領域1−2内で延在する(且つ遷移領域1−5内に延在しない)。
(vii)バリア領域105は、(例えば、それぞれの活性メサ18が横方向に位置するそれぞれの制御トレンチ14との接触を確立することなく)活性メサ18のサブセット内に少なくとも部分的に延在する。例えば、それにより、バリア領域105は、活性メサ18のサブセット中のそれぞれの活性メサ18のセクションと、ダミートレンチ15の底部155との間に導電性経路を提供するように構成することができる。
(viii)バリア領域105の横方向構造は、第1のピッチの少なくとも2倍の大きさの第2のピッチを有する第2のレイアウトに従って構成される(IGBTセル1−1は、上記の通り、第1のピッチを有する第1のレイアウトに従った横方向構造を有して構成される)。
(ix)存在する場合(例えば、電力半導体デバイス1が、RC−IGBTとして構成される場合)、通路1053は、第2の負荷端子12に電気的に接続されたn型エミッタと横方向にオーバーラップし得る。
1−1 IGBTセル
1−2 活性セル領域
1−3 エッジ終端領域
1−5 遷移領域
2 電力半導体デバイスを処理する方法
10 半導体本体
10−1 表面セクション
11 第1の負荷端子
12 第2の負荷端子
14 制御トレンチ
15 ダミートレンチ
16 ソーストレンチ
18 活性メサ
19 不活性メサ
20 複数のトレンチを生成するステップ
22 マスク配置を設けるステップ
24 ドーパント材料供給ステップ
26 マスク配置を除去するステップ
28 温度アニーリングステップ
30 マスク配置
100 ドリフト領域
100−1 上側セクション
105 バリア領域
109 ウェル領域
141 制御電極
151 ダミー電極
161 ソース電極
144、154、164 トレンチ側壁
145、155、165 トレンチ底部
212 犠牲平坦化構造を形成するステップ
300 保護層
301 横方向構造
309 犠牲平坦化構造
1059 ドーピング領域
2200 第2の導電型の電気的に浮遊するバリア領域を設けるステップ
W 幅
X 第1の横方向
Y 第2の横方向
Z 垂直方向
Claims (25)
- 電力半導体デバイス(1)を処理する方法(2)であって、
− 第1の導電型のドリフト領域(100)を備えた半導体本体(10)を設けることと、
− 複数のトレンチ(14、15、16)を生成すること(20)であって、前記トレンチ(14、15、16)は、垂直方向(Z)に沿って前記半導体本体(10)内に延在し、且つ第1の横方向(X)に沿って互いに隣接して配置される、複数のトレンチ(14、15、16)を生成すること(20)と、
− 前記半導体本体(10)にマスク配置(30)を設けること(22)であって、前記マスク配置(30)は、横方向構造(301)であって、それに従って前記トレンチ(14、15、16)の一部が露出され、及び前記トレンチ(14、15、16)の少なくとも1つが前記第1の横方向に沿って前記マスク機構(30)によって覆われる、横方向構造(301)を有する、マスク配置(30)を設けること(22)と、
− 前記半導体本体(10)及び前記マスク配置(30)をドーパント材料供給ステップに供すること(24)であって、それにより、前記露出されたトレンチ(14、15、16)の底部の下方で、前記第1の導電型と相補的な第2の導電型の複数のドーピング領域(1059)を生成する、ドーパント材料供給ステップに供すること(24)と、
− 前記マスク配置(30)を除去すること(26)と、
− 前記半導体本体(10)を温度アニーリングステップに供すること(28)であって、それにより、前記複数のドーピング領域(1059)を、オーバーラップし、且つ前記露出されたトレンチ(14、15、16)の前記底部に隣接する前記第2の導電型のバリア領域(105)を形成するように前記第1の横方向(X)と平行に延在させる、温度アニーリングステップに供すること(28)と
を含む方法(2)。 - 前記温度アニーリングステップ(28)は、少なくとも、前記バリア領域(105)が、前記ドーパント材料供給ステップ(24)中に前記マスク配置(30)によって覆われたトレンチの底部及び/又は側壁に達するまで前記バリア領域(105)が横方向に延在するように実行される、請求項1に記載の方法(2)。
- 前記温度アニーリングステップ(28)は、前記バリア領域(105)が前記トレンチ底部を越えて横方向に延在するように実行される、請求項2に記載の方法(2)。
- 前記ドーパント材料供給ステップ(24)は、注入処理ステップを含む、請求項1〜3の何れか一項に記載の方法(2)。
- 前記温度アニーリングステップ(28)は、前記バリア領域(105)が1e14cm−3〜4e17cm−3の範囲内の電気活性化ドーパント濃度を示すように実行され、前記電気活性化ドーパント濃度は、少なくとも0.1μmの前記垂直方向(Z)に沿った延在範囲内に存在する、請求項1〜4の何れか一項に記載の方法(2)。
- 前記バリア領域(105)は、前記ドリフト領域(100)により、前記垂直方向(Z)に且つ前記垂直方向(Z)に対して空間的に制限される、請求項1〜5の何れか一項に記載の方法(2)。
- 前記トレンチ(14、15、16)を生成することは、前記第1の横方向(X)に沿った各トレンチ幅が、前記垂直方向(Z)に沿った前記各トレンチの全延在範囲の少なくとも最初の80%に関して、前記各トレンチのトレンチ開口に存在するトレンチ幅の少なくとも95%の範囲内にとどまるように実行される、請求項1〜6の何れか一項に記載の方法(2)。
- 前記生成されたトレンチ(14、15、16)のそれぞれは、前記垂直方向(Z)と基本的に平行なトレンチ側壁を示し、前記注入(24)は、前記垂直方向(Z)に沿って実行される、請求項1〜7の何れか一項に記載の方法(2)。
- 少なくともトレンチ側壁において保護層(300)を設けることをさらに含み、前記ドーパント材料供給ステップ(24)は、前記露出されたトレンチの前記側壁に前記保護層(300)が存在する間に実行される、請求項1〜8の何れか一項に記載の方法(2)。
- 前記保護層(300)は、全てのトレンチ(14、15、16)に形成され、前記マスク配置(30)を設けることの前又は後に、エッチバック処理ステップは、前記トレンチ側壁(144、154、164)の前記保護層(300)を保持しながら、前記トレンチ(14、15、16)間の表面セクション(10−1)及びトレンチ底部(145、155、165)における前記保護層(300)を少なくとも部分的に除去するように実行される、請求項9に記載の方法(2)。
- 前記マスク配置(30)を設けること(22)は、リソグラフィ処理ステップを実行することを含む、請求項1〜10の何れか一項に記載の方法(2)。
- 前記マスク配置(30)を設けること(22)は、ステンシルマスクを用いることを含む、請求項1〜11の何れか一項に記載の方法(2)。
- 前記トレンチ(14、15、16)内及びその上に犠牲平坦化構造(309)を形成すること(212)をさらに含み、前記マスク配置(30)は、前記犠牲平坦化構造(309)の上に設けられる、請求項1〜12の何れか一項に記載の方法(2)。
- 前記トレンチ(14、15、16)は、第1のピッチを有する第1のレイアウトに従って形成され、前記マスク配置(30)の前記横方向構造(301)は、第2のレイアウトに従って構成され、前記第2のレイアウトは、前記第1のピッチの少なくとも2倍の大きさの第2のピッチ又は形状サイズを有する、請求項1〜13の何れか一項に記載の方法(2)。
- 前記半導体本体(10)は、前記ドリフト領域(100)を備えた活性セル領域(1−2)であって、前記トレンチ(14、15、16)は、少なくとも前記活性セル領域(1−2)内に形成される、活性セル領域(1−2)と、前記垂直方向(Z)に沿って少なくとも前記バリア領域(105)と同じ深さに延在する前記第2の導電型のウェル領域(109)を含むエッジ終端領域(1−3)と、前記活性セル領域(1−2)と前記エッジ終端領域(1−3)との間に配置される遷移領域(1−5)であって、横方向(X、Y)に沿って前記活性セル領域(1−2)から前記エッジ終端領域(1−3)に向かって少なくとも1μmの幅(W)を有する遷移領域(1−5)とを含み、
− 前記遷移領域内に形成される前記トレンチ又はそのセクションは、前記マスク配置(30)によって覆われる、請求項1〜14の何れか一項に記載の方法(2)。 - − 前記トレンチ(14、15、16)を、
−制御電極(141)を有する少なくとも1つの制御トレンチ(14)と、
− ダミー電極(151)を有する少なくとも1つのダミートレンチ(15)と
において形成するステップと、
− 前記半導体本体(10)において且つ前記トレンチ(14、15、16)間において、
− 前記少なくとも1つの制御トレンチ(14)に隣接して配置される少なくとも1つの活性メサ(18)であって、前記制御電極(141)は、制御信号を受信し、且つ前記活性メサ(18)における負荷電流を制御するように構成される、少なくとも1つの活性メサ(18)と、
− 前記少なくとも1つのダミートレンチ(15)に隣接して配置される少なくとも1つの不活性メサ(19)と
を形成することと
をさらに含み、前記バリア領域(105)は、前記少なくとも1つの不活性メサ(19)と横方向にオーバーラップするように生成される、請求項1〜15の何れか一項に記載の方法(2)。 - 前記少なくとも1つの制御トレンチ(14)及びそれに隣接するトレンチ(16)は、前記第1の横方向に沿って前記マスク配置(30)によって覆われ、前記バリア領域(105)は、少なくとも、前記ドーパント材料供給ステップ(24)中に前記マスク配置(30)によって覆われた前記隣接するトレンチ(16)の底部(165)及び/又は側壁(164)に達するまで横方向に延在する、請求項16に記載の方法(2)。
- 前記温度アニーリングステップ(28)は、前記バリア領域(105)が前記トレンチ底部(165)を越えて前記少なくとも1つの活性メサ(18)内に横方向に延在するように実行される、請求項17に記載の方法(2)。
- 前記バリア領域(105)は、前記ドリフト領域(100)によって前記制御トレンチ(14)から分離される、請求項18に記載の方法(2)。
- 前記隣接するトレンチ(16)は、前記制御トレンチ(14)と比較して前記垂直方向(Z)に沿ってより大きい全延在範囲を有して形成され、前記温度アニーリングステップ(28)中の前記バリア領域(105)の横方向延在範囲は、前記隣接するトレンチ(16)によって阻止される、請求項17に記載の方法(2)。
- 電力半導体デバイス(1)を処理する方法(2)であって、前記電力半導体デバイス(1)は、第1の負荷端子(11)及び第2の負荷端子(12)を含み、前記電力半導体デバイス(1)は、前記端子(11、12)間で垂直方向(Z)に沿って負荷電流を伝導するように構成され、且つ第1の導電型のドリフト領域(100)を備えた活性セル領域(1−2)と、第2の導電型のウェル領域(109)を有するエッジ終端領域(1−3)と、前記活性セル領域(1−2)内に配置される複数のIGBTセル(1−1)とをさらに含み、前記IGBTセル(1−1)のそれぞれは、前記垂直方向(Z)に沿って前記ドリフト領域(100)内に延在し、且つ複数のメサを横方向に制限する複数のトレンチを含み、前記複数のトレンチは、制御電極(141)を有する少なくとも1つの制御トレンチ(14)と、前記制御電極(141)に電気的に結合されたダミー電極(151)を有する少なくとも1つのダミートレンチ(15)と、前記第1の負荷端子(11)に電気的に接続されたソース電極(161)を有する少なくとも1つのソーストレンチ(16)とを含み、前記複数のメサは、前記少なくとも1つの制御トレンチ(14)と前記少なくとも1つのソーストレンチ(16)との間に配置された少なくとも1つの活性メサ(18)と、前記少なくとも1つのダミートレンチ(15)に隣接して配置された少なくとも1つの不活性メサ(19)とを含み、前記方法(2)は、
− 前記第2の導電型の電気的に浮遊するバリア領域(105)を設けること(2200)であって、少なくとも前記ダミートレンチ(15)の底部(155)及び前記ソーストレンチ(16)の底部(165)の両方は、少なくとも部分的に前記電気的に浮遊するバリア領域(105)内に延在し、前記電気的に浮遊するバリア領域(105)と前記ウェル領域(109)との間で横方向(X、Y)に位置する前記ドリフト領域(100)の一部は、前記横方向に少なくとも1μmの横方向延在範囲を有する、バリア領域(105)を設けること(2200)
を含む、方法(2)。 - 第1の負荷端子(11)及び第2の負荷端子(12)を含む電力半導体デバイス(1)であって、前記端子(11、12)間で垂直方向(Z)に沿って負荷電流を伝導するように構成され、且つ
− 第1の導電型のドリフト領域(100)と、
− 複数のIGBTセル(1−1)であって、前記IGBTセル(1−1)のそれぞれは、前記垂直方向(Z)に沿って前記ドリフト領域(100)内に延在し、且つ少なくとも1つの活性メサ(18)を横方向に制限する複数のトレンチ(14、15、16)を含み、前記少なくとも1つの活性メサ(18)は、前記ドリフト領域(100)の上側セクション(100−1)を含む、複数のIGBTセル(1−1)と、
− 前記ドリフト領域(100)により、前記垂直方向(Z)に且つ前記垂直方向(Z)に対して空間的に制限される第2の導電型の電気的に浮遊するバリア領域(105)と
を含み、
− 全ての活性メサ(18)の総量は、第1の構成分及び第2の構成分に分割され、前記第1の構成分は、前記バリア領域(105)と横方向にオーバーラップせず、及び前記第2の構成分は、前記バリア領域(105)と横方向にオーバーラップし、
− 前記第1の構成分は、少なくとも、前記電力半導体デバイス(1)が設計される公称負荷電流の0%〜100%の範囲内の前記負荷電流を伝送するように構成され、及び
− 前記第2の構成分は、前記負荷電流が前記公称負荷電流の少なくとも0.5%を超える場合に前記負荷電流を伝送するように構成される、電力半導体デバイス(1)。 - 前記第2の構成分は、前記負荷電流が前記公称負荷電流の少なくとも0.5%を超える場合にのみ、前記負荷電流を伝送するように構成される、請求項22に記載の電力半導体デバイス(1)。
- それぞれの活性メサ(18)は、前記各活性メサ(18)内で反転チャネルを誘起するように構成され、全ての活性メサ(18)は、同じ反転チャネル閾値電圧で構成される、請求項22又は23に記載の電力半導体デバイス(1)。
- 前記負荷電流が前記公称負荷電流の50%を超える場合、前記活性メサ(18)の前記第1の構成分量によって伝導される第1の負荷電流構成分と、前記活性メサ(18)の前記第2の構成分量によって伝導される第2の負荷電流構成分との間の比率は、少なくとも前記第1の構成分量と前記第2の構成分量との間の比率の10%以内である、請求項22〜24の何れか一項に記載の電力半導体デバイス(1)。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2023118018A JP2023156320A (ja) | 2017-10-24 | 2023-07-20 | dV/dt制御性を備えたIGBTを製造する方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017124872.2A DE102017124872B4 (de) | 2017-10-24 | 2017-10-24 | Verfahren zur Herstellung eines IGBT mit dV/dt-Steuerbarkeit |
DE102017124872.2 | 2017-10-24 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2023118018A Division JP2023156320A (ja) | 2017-10-24 | 2023-07-20 | dV/dt制御性を備えたIGBTを製造する方法 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2019110288A true JP2019110288A (ja) | 2019-07-04 |
JP2019110288A5 JP2019110288A5 (ja) | 2021-12-02 |
JP7319037B2 JP7319037B2 (ja) | 2023-08-01 |
Family
ID=65995921
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018199648A Active JP7319037B2 (ja) | 2017-10-24 | 2018-10-24 | dV/dt制御性を備えたIGBTを製造する方法 |
JP2023118018A Pending JP2023156320A (ja) | 2017-10-24 | 2023-07-20 | dV/dt制御性を備えたIGBTを製造する方法 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2023118018A Pending JP2023156320A (ja) | 2017-10-24 | 2023-07-20 | dV/dt制御性を備えたIGBTを製造する方法 |
Country Status (5)
Country | Link |
---|---|
US (4) | US10615272B2 (ja) |
JP (2) | JP7319037B2 (ja) |
KR (1) | KR102630901B1 (ja) |
CN (1) | CN109698197A (ja) |
DE (1) | DE102017124872B4 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2023011834A (ja) * | 2019-09-13 | 2023-01-24 | 株式会社 日立パワーデバイス | 半導体装置および電力変換装置 |
DE112021002612T5 (de) | 2021-01-25 | 2023-03-16 | Fuji Electric Co., Ltd. | Halbleitervorrichtung |
WO2023063412A1 (ja) * | 2021-10-15 | 2023-04-20 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
WO2023139931A1 (ja) | 2022-01-20 | 2023-07-27 | 富士電機株式会社 | 半導体装置 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6702423B2 (ja) | 2016-08-12 | 2020-06-03 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
DE102017124871B4 (de) | 2017-10-24 | 2021-06-17 | Infineon Technologies Ag | Leistungshalbleiter-Vorrichtung und Verfahren zum Herstellen einer Leistungshalbleiter-Vorrichtung |
DE102017124872B4 (de) * | 2017-10-24 | 2021-02-18 | Infineon Technologies Ag | Verfahren zur Herstellung eines IGBT mit dV/dt-Steuerbarkeit |
US10847617B2 (en) | 2017-12-14 | 2020-11-24 | Fuji Electric Co., Ltd. | Semiconductor device |
US11106854B2 (en) * | 2018-08-21 | 2021-08-31 | Taiwan Semiconductor Manufacturing Company, Ltd. | Transition cells for advanced technology processes |
DE102018130095B4 (de) * | 2018-11-28 | 2021-10-28 | Infineon Technologies Dresden GmbH & Co. KG | Halbleiterleistungsschalter mit verbesserter Steuerbarkeit |
US11450734B2 (en) * | 2019-06-17 | 2022-09-20 | Fuji Electric Co., Ltd. | Semiconductor device and fabrication method for semiconductor device |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008251620A (ja) * | 2007-03-29 | 2008-10-16 | Toyota Motor Corp | 半導体装置とその製造方法 |
JP2010045245A (ja) * | 2008-08-14 | 2010-02-25 | Fuji Electric Systems Co Ltd | 半導体装置および半導体装置の製造方法 |
JP2014187190A (ja) * | 2013-03-22 | 2014-10-02 | Toshiba Corp | 半導体装置の製造方法 |
JP2015056643A (ja) * | 2013-09-13 | 2015-03-23 | 株式会社東芝 | 半導体装置の製造方法 |
JP2016225566A (ja) * | 2015-06-03 | 2016-12-28 | ルネサスエレクトロニクス株式会社 | 半導体装置およびその製造方法 |
JP2017028250A (ja) * | 2015-07-16 | 2017-02-02 | 富士電機株式会社 | 半導体装置及びその製造方法 |
JP2017162992A (ja) * | 2016-03-09 | 2017-09-14 | トヨタ自動車株式会社 | スイッチング素子 |
Family Cites Families (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7186609B2 (en) * | 1999-12-30 | 2007-03-06 | Siliconix Incorporated | Method of fabricating trench junction barrier rectifier |
US6657254B2 (en) * | 2001-11-21 | 2003-12-02 | General Semiconductor, Inc. | Trench MOSFET device with improved on-resistance |
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 |
US6913977B2 (en) | 2003-09-08 | 2005-07-05 | Siliconix Incorporated | Triple-diffused trench MOSFET and method of fabricating the same |
JP4723816B2 (ja) | 2003-12-24 | 2011-07-13 | 株式会社豊田中央研究所 | 半導体装置 |
CN100444400C (zh) * | 2004-01-10 | 2008-12-17 | HVVi半导体股份有限公司 | 功率半导体器件及其方法 |
WO2005069378A2 (en) | 2004-01-10 | 2005-07-28 | Hvvi Semiconductors, Inc. | Power semiconductor device and method therefor |
GB0403934D0 (en) * | 2004-02-21 | 2004-03-24 | Koninkl Philips Electronics Nv | Trench-gate semiconductor devices and the manufacture thereof |
JP2005340626A (ja) | 2004-05-28 | 2005-12-08 | Toshiba Corp | 半導体装置 |
CN101933141B (zh) | 2008-01-29 | 2013-02-13 | 富士电机株式会社 | 半导体装置 |
US7982253B2 (en) * | 2008-08-01 | 2011-07-19 | Infineon Technologies Austria Ag | Semiconductor device with a dynamic gate-drain capacitance |
JP4544360B2 (ja) | 2008-10-24 | 2010-09-15 | トヨタ自動車株式会社 | Igbtの製造方法 |
US20100264488A1 (en) * | 2009-04-15 | 2010-10-21 | Force Mos Technology Co. Ltd. | Low Qgd trench MOSFET integrated with schottky rectifier |
US8049276B2 (en) * | 2009-06-12 | 2011-11-01 | Fairchild Semiconductor Corporation | Reduced process sensitivity of electrode-semiconductor rectifiers |
US8264033B2 (en) | 2009-07-21 | 2012-09-11 | Infineon Technologies Austria Ag | Semiconductor device having a floating semiconductor zone |
JP5488691B2 (ja) | 2010-03-09 | 2014-05-14 | 富士電機株式会社 | 半導体装置 |
JP5621703B2 (ja) | 2011-04-26 | 2014-11-12 | 三菱電機株式会社 | 半導体装置 |
JP5969771B2 (ja) | 2011-05-16 | 2016-08-17 | ルネサスエレクトロニクス株式会社 | Ie型トレンチゲートigbt |
JP2012256628A (ja) | 2011-06-07 | 2012-12-27 | Renesas Electronics Corp | Igbtおよびダイオード |
US9117843B2 (en) * | 2011-09-14 | 2015-08-25 | Taiwan Semiconductor Manufacturing Company, Ltd. | Device with engineered epitaxial region and methods of making same |
KR101642618B1 (ko) | 2011-09-28 | 2016-07-25 | 도요타 지도샤(주) | Igbt 와 그 제조 방법 |
US8785278B2 (en) * | 2012-02-02 | 2014-07-22 | Alpha And Omega Semiconductor Incorporated | Nano MOSFET with trench bottom oxide shielded and third dimensional P-body contact |
US9608071B2 (en) | 2012-02-14 | 2017-03-28 | Toyota Jidosha Kabushiki Kaisha | IGBT and IGBT manufacturing method |
JP5979993B2 (ja) | 2012-06-11 | 2016-08-31 | ルネサスエレクトロニクス株式会社 | 狭アクティブセルie型トレンチゲートigbtの製造方法 |
US9117691B2 (en) * | 2012-12-28 | 2015-08-25 | Texas Instruments Incorporated | Low cost transistors |
US9024413B2 (en) * | 2013-01-17 | 2015-05-05 | Infineon Technologies Ag | Semiconductor device with IGBT cell and desaturation channel structure |
US9391149B2 (en) | 2013-06-19 | 2016-07-12 | Infineon Technologies Austria Ag | Semiconductor device with self-charging field electrodes |
US9337827B2 (en) | 2013-07-15 | 2016-05-10 | Infineon Technologies Ag | Electronic circuit with a reverse-conducting IGBT and gate driver circuit |
GB201313126D0 (en) | 2013-07-23 | 2013-09-04 | Eco Semiconductors Ltd | MOS-Bipolar Device |
CN104995738B (zh) | 2013-08-15 | 2018-01-23 | 富士电机株式会社 | 半导体装置 |
US9105679B2 (en) | 2013-11-27 | 2015-08-11 | Infineon Technologies Ag | Semiconductor device and insulated gate bipolar transistor with barrier regions |
US9553179B2 (en) * | 2014-01-31 | 2017-01-24 | Infineon Technologies Ag | Semiconductor device and insulated gate bipolar transistor with barrier structure |
JP6420175B2 (ja) | 2014-05-22 | 2018-11-07 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
DE102014117242A1 (de) * | 2014-11-25 | 2016-05-25 | Infineon Technologies Dresden Gmbh | Leistungstransistor mit Feldelektrode |
US9793254B2 (en) * | 2014-12-09 | 2017-10-17 | Alpha And Omega Semiconductor Incorporated | TVS structures for high surge and low capacitance |
JP6063915B2 (ja) | 2014-12-12 | 2017-01-18 | 株式会社豊田中央研究所 | 逆導通igbt |
JP6053050B2 (ja) | 2014-12-12 | 2016-12-27 | 株式会社豊田中央研究所 | 逆導通igbt |
DE102014226161B4 (de) | 2014-12-17 | 2017-10-26 | Infineon Technologies Ag | Halbleitervorrichtung mit Überlaststrombelastbarkeit |
KR101745776B1 (ko) | 2015-05-12 | 2017-06-28 | 매그나칩 반도체 유한회사 | 전력용 반도체 소자 |
US9929260B2 (en) | 2015-05-15 | 2018-03-27 | Fuji Electric Co., Ltd. | IGBT semiconductor device |
DE102015210923B4 (de) | 2015-06-15 | 2018-08-02 | Infineon Technologies Ag | Halbleitervorrichtung mit reduzierter Emitter-Effizienz und Verfahren zur Herstellung |
US10056370B2 (en) | 2015-07-16 | 2018-08-21 | Fuji Electric Co., Ltd. | Semiconductor device |
US10468510B2 (en) * | 2015-07-16 | 2019-11-05 | Fuji Electric Co., Ltd. | Semiconductor device and manufacturing method of the same |
DE102015117994B8 (de) * | 2015-10-22 | 2018-08-23 | Infineon Technologies Ag | Leistungshalbleitertransistor mit einer vollständig verarmten Kanalregion |
US9825025B2 (en) | 2016-03-16 | 2017-11-21 | Fuji Electric Co., Ltd. | Semiconductor device and method of manufacturing semiconductor device |
CN106449753A (zh) * | 2016-07-14 | 2017-02-22 | 中航(重庆)微电子有限公司 | 一种低导通电阻沟槽功率mos器件结构及其制备方法 |
WO2018237355A1 (en) | 2017-06-22 | 2018-12-27 | Maxpower Semiconductor, Inc. | VERTICAL RECTIFIER WITH ADDED INTERMEDIATE REGION |
CN110140199B (zh) | 2017-07-14 | 2022-07-05 | 富士电机株式会社 | 半导体装置 |
DE102017124872B4 (de) * | 2017-10-24 | 2021-02-18 | Infineon Technologies Ag | Verfahren zur Herstellung eines IGBT mit dV/dt-Steuerbarkeit |
DE102017124871B4 (de) | 2017-10-24 | 2021-06-17 | Infineon Technologies Ag | Leistungshalbleiter-Vorrichtung und Verfahren zum Herstellen einer Leistungshalbleiter-Vorrichtung |
-
2017
- 2017-10-24 DE DE102017124872.2A patent/DE102017124872B4/de active Active
-
2018
- 2018-10-22 CN CN201811229046.5A patent/CN109698197A/zh active Pending
- 2018-10-23 US US16/167,926 patent/US10615272B2/en active Active
- 2018-10-24 KR KR1020180127097A patent/KR102630901B1/ko active IP Right Grant
- 2018-10-24 JP JP2018199648A patent/JP7319037B2/ja active Active
-
2020
- 2020-04-01 US US16/837,337 patent/US10854739B2/en active Active
- 2020-11-03 US US17/087,678 patent/US11594621B2/en active Active
-
2023
- 2023-02-21 US US18/112,249 patent/US12034066B2/en active Active
- 2023-07-20 JP JP2023118018A patent/JP2023156320A/ja active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008251620A (ja) * | 2007-03-29 | 2008-10-16 | Toyota Motor Corp | 半導体装置とその製造方法 |
JP2010045245A (ja) * | 2008-08-14 | 2010-02-25 | Fuji Electric Systems Co Ltd | 半導体装置および半導体装置の製造方法 |
JP2014187190A (ja) * | 2013-03-22 | 2014-10-02 | Toshiba Corp | 半導体装置の製造方法 |
JP2015056643A (ja) * | 2013-09-13 | 2015-03-23 | 株式会社東芝 | 半導体装置の製造方法 |
JP2016225566A (ja) * | 2015-06-03 | 2016-12-28 | ルネサスエレクトロニクス株式会社 | 半導体装置およびその製造方法 |
JP2017028250A (ja) * | 2015-07-16 | 2017-02-02 | 富士電機株式会社 | 半導体装置及びその製造方法 |
JP2017162992A (ja) * | 2016-03-09 | 2017-09-14 | トヨタ自動車株式会社 | スイッチング素子 |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2023011834A (ja) * | 2019-09-13 | 2023-01-24 | 株式会社 日立パワーデバイス | 半導体装置および電力変換装置 |
JP7503612B2 (ja) | 2019-09-13 | 2024-06-20 | 株式会社 日立パワーデバイス | 半導体装置および電力変換装置 |
DE112021002612T5 (de) | 2021-01-25 | 2023-03-16 | Fuji Electric Co., Ltd. | Halbleitervorrichtung |
WO2023063412A1 (ja) * | 2021-10-15 | 2023-04-20 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
WO2023139931A1 (ja) | 2022-01-20 | 2023-07-27 | 富士電機株式会社 | 半導体装置 |
Also Published As
Publication number | Publication date |
---|---|
DE102017124872B4 (de) | 2021-02-18 |
KR20190045867A (ko) | 2019-05-03 |
US20200235232A1 (en) | 2020-07-23 |
US11594621B2 (en) | 2023-02-28 |
CN109698197A (zh) | 2019-04-30 |
US10854739B2 (en) | 2020-12-01 |
KR102630901B1 (ko) | 2024-01-30 |
US20230207673A1 (en) | 2023-06-29 |
US20190123185A1 (en) | 2019-04-25 |
JP2023156320A (ja) | 2023-10-24 |
US12034066B2 (en) | 2024-07-09 |
US10615272B2 (en) | 2020-04-07 |
DE102017124872A1 (de) | 2019-04-25 |
US20210050436A1 (en) | 2021-02-18 |
JP7319037B2 (ja) | 2023-08-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP7412879B2 (ja) | dV/dt制御性を備えたIGBT | |
JP7319037B2 (ja) | dV/dt制御性を備えたIGBTを製造する方法 | |
CN107424928B (zh) | 具有充电平衡设计的功率半导体器件 | |
KR102553464B1 (ko) | Dv/dt 제어 가능 igbt | |
US20210057556A1 (en) | Igbt devices with 3d backside structures for field stop and reverse conduction | |
US11682700B2 (en) | Power semiconductor device with dV/dt controllability and low gate charge | |
US9786665B1 (en) | Dual deep trenches for high voltage isolation | |
US9660047B2 (en) | Method for forming semiconductor components having self-aligned trench contacts | |
US11114528B2 (en) | Power transistor with dV/dt controllability and tapered mesas | |
US20220199614A1 (en) | RC IGBT and Method of Producing an RC IGBT | |
CN105280712A (zh) | 电荷补偿器件及其制造 | |
US9899470B2 (en) | Method for forming a power semiconductor device and a power semiconductor device | |
US11538906B2 (en) | Diode with structured barrier region | |
US11011629B2 (en) | Power semiconductor switch with improved controllability |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20211022 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20211022 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20221129 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20230228 |
|
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: 20230620 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20230720 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7319037 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |