JP6475635B2 - ゲート酸化膜層において電界を低下させた半導体デバイス - Google Patents
ゲート酸化膜層において電界を低下させた半導体デバイス Download PDFInfo
- Publication number
- JP6475635B2 JP6475635B2 JP2015550412A JP2015550412A JP6475635B2 JP 6475635 B2 JP6475635 B2 JP 6475635B2 JP 2015550412 A JP2015550412 A JP 2015550412A JP 2015550412 A JP2015550412 A JP 2015550412A JP 6475635 B2 JP6475635 B2 JP 6475635B2
- Authority
- JP
- Japan
- Prior art keywords
- region
- transistor device
- jfet
- microns
- transistor
- 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
- 230000005684 electric field Effects 0.000 title claims description 57
- 239000004065 semiconductor Substances 0.000 title claims description 12
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 15
- 230000005669 field effect Effects 0.000 claims description 12
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 12
- 229910044991 metal oxide Inorganic materials 0.000 claims description 5
- 150000004706 metal oxides Chemical class 0.000 claims description 5
- 238000000034 method Methods 0.000 description 35
- 230000000903 blocking effect Effects 0.000 description 16
- 239000000758 substrate Substances 0.000 description 15
- 238000009826 distribution Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 12
- 239000002019 doping agent Substances 0.000 description 10
- 238000005468 ion implantation Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 230000007547 defect Effects 0.000 description 6
- 238000003892 spreading Methods 0.000 description 6
- 230000007480 spreading Effects 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 230000002411 adverse Effects 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000407 epitaxy Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 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
-
- 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
- H01L29/0684—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
- H01L29/0688—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 characterised by the particular shape of a junction between semiconductor 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
- H01L29/02—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
-
- 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
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/16—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table
- H01L29/1608—Silicon carbide
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—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
- H01L29/66234—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
-
- 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
- H01L29/66363—Thyristors
- H01L29/66371—Thyristors structurally associated with another device, e.g. built-in diode
- H01L29/66378—Thyristors structurally associated with another device, e.g. built-in diode the other device being a controlling field-effect device
-
- 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
- H01L29/66666—Vertical 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
- H01L29/66—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
-
- 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
-
- 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
- H01L29/74—Thyristor-type devices, e.g. having four-zone regenerative action
- H01L29/749—Thyristor-type devices, e.g. having four-zone regenerative action with turn-on by field effect
-
- 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
- H01L29/7827—Vertical 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
- H01L29/66—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
- H01L29/7827—Vertical transistors
- H01L29/7828—Vertical transistors without inversion channel, e.g. vertical ACCUFETs, normally-on vertical MISFETs
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Junction Field-Effect Transistors (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Thyristors (AREA)
Description
本開示は、トランジスタ構造、特に、ゲート酸化膜において電界が低下した、金属酸化物半導体電界効果トランジスタ(MOSFET)等のトランジスタ構造、及び、このようなトランジスタ構造の製造方法に関する。
[背景技術]
金属酸化物半導体電界効果トランジスタ(MOSFET)は周知のものである。特に、パワーMOSFETは市販化されており、電力システムにおいて広く用いられることが期待されている。炭化ケイ素(SiC)上のパワーMOSFET等の従来のMOSFET構造の場合、起こりうる課題の1つとして、デバイスの接合型電界効果(JFET)領域の中央にあるゲート酸化膜において高電界が存在することが挙げられる。JFET領域は一般に、N型ドーパントを含有し得るN型ドリフト層の活性部分であり、2つのP型ウェルの間に位置する。JFET領域は、ゲート電圧を印加することによってP型ウェルの表面に達するチャネル領域に接触している領域を指し得る。JFET領域は、N+ソース領域、チャネル領域、N型ドリフト領域、基板、及びドレイン電極と共に電子の導電路を構成する。ドレインに高バイアス(動作上の最大値に近い)が印加され、ゲートは接地電位付近に保たれている動作状態下では、JFET領域の直上にあるゲート酸化膜内で高電界が発生してしまう。界面物質やゲート酸化膜に欠陥があると、ドレインが正バイアスが高い状況下に置かれる長時間の阻止動作中に、ゲート酸化膜が破壊される結果となり得る。また、従来のMOSFETは、ドレインが正バイアスが高い状況下に置かれる長時間の阻止動作中に生じ得るホットキャリア注入の悪影響を受ける可能性もある。
[概要]
本開示は、ゲート酸化膜界面において電界を低下させ、これにより、ドレインが正バイアスが高い状況下に置かれる長時間の阻止動作中のデバイス信頼性が、ゲート酸化膜の電界が低くなることに起因して向上するともに、ドレインが正バイアスが高い状況下に置かれる長時間の阻止動作中にホットキャリアがゲート酸化膜内に注入される可能性が低減するトランジスタデバイスに関する。ある好適な実施形態において、トランジスタデバイスはMOSFETデバイスであり、より好適には炭化ケイ素(SiC)MOSFETデバイスである。しかしながら、より一般的には、トランジスタデバイスは、トランジスタを有する任意の種類のデバイス(例えばパワーMOSFET、二重注入電界効果型トランジスタ(DIMOSFET)、絶縁ゲートバイポーラトランジスタ(IGBT)等)であってもよい。
本明細書に組み込まれるとともに本明細書の一部を構成する各添付図面は、本開示のいくつかの態様を例示したものであり、その説明とともに、本開示の原理を明らかにする役割を果たす。
以下に説明する各実施形態は、当業者が実施形態を実施することを可能にするために必要な情報を示すとともに、各実施形態を実行する最良の形態を示している。当業者であれば、以下の説明を添付の図面に照らして考察すると、本開示の概念を理解し、本明細書では特に論じていないこれらの概念の応用を認識するであろう。これらの概念及び応用が本開示及び添付の特許請求の範囲の範疇にあることは理解されるべきである。
Claims (25)
- ゲートと、ソースと、ドレインとを備えるトランジスタデバイスであって、前記ゲートはゲート酸化膜に少なくとも部分的に接触しており、前記ゲート酸化膜上における電界を低下させるために、複数のドープ領域が、前記トランジスタデバイスのウェル領域間を延びる接合型電界効果(JFET)領域内に存在し、前記複数のドープ領域は、前記JFET領域内において前記ウェル領域間に配置されるとともに、前記JFET領域の上面の完全に下方に、かつ、完全に該JFET領域内に、かつ、完全に前記ウェル領域間にあり、前記複数のドープ領域のドープ領域が前記ウェル領域より下方には延びていない、トランジスタデバイス。
- 前記トランジスタデバイスの本体が炭化ケイ素を含む、請求項1に記載のトランジスタデバイス。
- 前記複数のドープ領域のうち少なくとも1つのドープ領域が前記JFET領域のほぼ中央に設けられる、請求項1に記載のトランジスタデバイス。
- 前記複数のドープ領域のうち少なくとも1つのドープ領域が前記ソースに接続され、これにより前記トランジスタデバイスの前記ドレインを有する側からの電界を効果的に遮蔽する、請求項1に記載のトランジスタデバイス。
- 前記複数のドープ領域のうち少なくとも1つのドープ領域は、深さが約0.1ミクロン(μm)と約0.3ミクロン(μm)の間である、請求項1に記載のトランジスタデバイス。
- 前記複数のドープ領域のうち少なくとも1つのドープ領域は、幅が約0.5ミクロン(μm)と約1.0ミクロン(μm)の間である、請求項1に記載のトランジスタデバイス。
- 前記JFET領域の幅が、約2.0ミクロン(μm)と約3.6ミクロン(μm)の間である、請求項1に記載のトランジスタデバイス。
- 前記複数のドープ領域のうち少なくとも1つのドープ領域がP領域である、請求項1に記載のトランジスタデバイス。
- ゲート酸化膜と少なくとも部分的に接触しているゲートと、ソースと、ドレインとを有するトランジスタデバイスであって、
第1導電型のウェル領域と、
前記ウェル領域の上にある第2導電型の領域と、
前記ウェル領域に隣接する接合型電界効果(JFET)領域と、
前記第2導電型の領域の一部及び前記JFET領域にわたって延びる埋め込みチャネル層であって、前記ゲート酸化膜により少なくとも部分的に覆われており、該ゲート酸化膜上において前記トランジスタデバイスが低下した電界を有する、埋め込みチャネル層と、
前記ウェル領域の下方にあるドリフト層と、
前記JFET領域内において前記第2導電型の領域に近接する第1導電型の領域と、
前記JFET領域内に存在する前記第1導電型である第1の領域及び第2の領域であって、前記ウェル領域が前記トランジスタデバイス内に第1の深さまで注入され、前記第1の領域及び前記第2の領域のうち少なくとも1つが、前記JFET領域内において、前記ウェル領域の前記第1の深さの半分と前記第1の深さの間である第2の深さで注入され、かつ、前記JFET領域の上面の完全に下方にある、第1の領域及び第2の領域と
を備えるトランジスタデバイス。 - 前記JFET領域において導入された前記第1導電型の前記第1の領域及び前記第2の領域は、前記ゲート酸化膜において電界を低下させる、請求項9に記載のトランジスタデバイス。
- 前記トランジスタデバイスはMOSFETである、請求項9に記載のトランジスタデバイス。
- 前記トランジスタデバイスは絶縁ゲートバイポーラトランジスタである、請求項9に記載のトランジスタデバイス。
- 前記トランジスタデバイスは金属酸化物半導体制御サイリスタである、請求項9に記載
のトランジスタデバイス。 - 前記第1導電型はP+型であり、前記第2導電型はN+型である、請求項9に記載のトランジスタデバイス。
- 前記トランジスタデバイスの本体は炭化ケイ素を含む、請求項9に記載のトランジスタデバイス。
- 前記JFET領域において導入された前記第1導電型の前記第1の領域及び前記第2の領域の一方はP+領域であり、かつ、前記JFET領域のほぼ中央に導入される、請求項9に記載のトランジスタデバイス。
- 前記JFET領域に導入された前記第1導電型の前記第1の領域及び前記第2の領域の一方はP+領域であり、かつ、前記ソースに接続されており、これにより、前記トランジスタデバイスの前記ドレインを有する側からの電界を効果的に遮蔽する、請求項9に記載のトランジスタデバイス。
- 前記JFET領域内に導入された前記第1導電型の前記第1の領域及び前記第2の領域の一方はP+領域であり、かつ、深さが前記ウェル領域よりも浅い、請求項9に記載のトランジスタデバイス。
- 前記JFET領域内に導入された前記第1導電型の前記第1の領域及び前記第2の領域の一方はP+領域であり、かつ、深さが約0.1ミクロン(μm)と約0.3ミクロン(μm)の間である、請求項9に記載のトランジスタデバイス。
- 前記JFET領域内に導入された前記第1導電型の前記第1の領域及び前記第2の領域の一方はP+領域であり、かつ、幅が約0.5ミクロン(μm)と約1.0ミクロン(μm)の間である、請求項9に記載のトランジスタデバイス。
- 前記JFET領域の幅は約2.0ミクロン(μm)と約3.6ミクロン(μm)の間である、請求項9に記載のトランジスタデバイス。
- 前記JFET領域内に存在する第2のドープ領域をさらに備え、前記第2のドープ領域が完全に前記JFET領域内に、かつ、完全に前記ウェル領域の間にある、請求項1に記載のトランジスタデバイス。
- 第1の電流端子がソースであり、第2の電流端子がドレインである、請求項9に記載のトランジスタデバイス。
- 前記複数のドープ領域が前記JFET領域の上面から離間している、請求項1に記載のトランジスタデバイス。
- 前記第1の領域及び前記第2の領域のうち少なくとも一方が前記JFET領域の上面から離間している、請求項9に記載のトランジスタデバイス。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/730,133 | 2012-12-28 | ||
US13/730,133 US9530844B2 (en) | 2012-12-28 | 2012-12-28 | Transistor structures having reduced electrical field at the gate oxide and methods for making same |
PCT/US2013/073093 WO2014105372A1 (en) | 2012-12-28 | 2013-12-04 | Semiconductor devices having reduced electric field at a gate oxide layer |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2016506081A JP2016506081A (ja) | 2016-02-25 |
JP2016506081A5 JP2016506081A5 (ja) | 2017-01-26 |
JP6475635B2 true JP6475635B2 (ja) | 2019-02-27 |
Family
ID=49841838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2015550412A Active JP6475635B2 (ja) | 2012-12-28 | 2013-12-04 | ゲート酸化膜層において電界を低下させた半導体デバイス |
Country Status (6)
Country | Link |
---|---|
US (2) | US9530844B2 (ja) |
EP (2) | EP3840056A1 (ja) |
JP (1) | JP6475635B2 (ja) |
KR (1) | KR101735230B1 (ja) |
CN (1) | CN105103297B (ja) |
WO (1) | WO2014105372A1 (ja) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10115815B2 (en) | 2012-12-28 | 2018-10-30 | Cree, Inc. | Transistor structures having a deep recessed P+ junction and methods for making same |
US9530844B2 (en) | 2012-12-28 | 2016-12-27 | Cree, Inc. | Transistor structures having reduced electrical field at the gate oxide and methods for making same |
EP2874188A4 (en) * | 2013-02-13 | 2016-04-13 | Fuji Electric Co Ltd | SEMICONDUCTOR COMPONENT |
US10062749B2 (en) | 2013-06-18 | 2018-08-28 | Monolith Semiconductor Inc. | High voltage semiconductor devices and methods of making the devices |
US9685550B2 (en) | 2014-12-26 | 2017-06-20 | Fairchild Semiconductor Corporation | Silicon carbide (SiC) device with improved gate dielectric shielding |
CN105023939A (zh) * | 2015-04-08 | 2015-11-04 | 四川大学 | 一种新型的栅下阱结构4H-SiCMOSFET器件 |
CN107275393A (zh) * | 2016-04-08 | 2017-10-20 | 株洲中车时代电气股份有限公司 | 碳化硅mosfet器件及其制备方法 |
US10600871B2 (en) * | 2016-05-23 | 2020-03-24 | General Electric Company | Electric field shielding in silicon carbide metal-oxide-semiconductor (MOS) device cells using body region extensions |
JP6593294B2 (ja) * | 2016-09-28 | 2019-10-23 | トヨタ自動車株式会社 | 半導体装置 |
US11489069B2 (en) | 2017-12-21 | 2022-11-01 | Wolfspeed, Inc. | Vertical semiconductor device with improved ruggedness |
US10615274B2 (en) | 2017-12-21 | 2020-04-07 | Cree, Inc. | Vertical semiconductor device with improved ruggedness |
CN109065623B (zh) * | 2018-06-22 | 2021-03-02 | 中国电子科技集团公司第五十五研究所 | 一种碳化硅金属氧化物半导体场效应晶体管及其制造方法 |
CN108831835A (zh) * | 2018-06-22 | 2018-11-16 | 重庆平伟实业股份有限公司 | 功率半导体器件的形成方法 |
CN110718452A (zh) | 2018-07-12 | 2020-01-21 | 创能动力科技有限公司 | 碳化硅器件及其制造方法 |
US10818662B2 (en) * | 2018-09-19 | 2020-10-27 | Alpha And Omega Semiconductor (Cayman) Ltd. | Silicon carbide MOSFET with source ballasting |
JP7127748B2 (ja) * | 2019-08-29 | 2022-08-30 | 三菱電機株式会社 | 炭化珪素半導体装置、電力変換装置および炭化珪素半導体装置の製造方法 |
US11728422B2 (en) * | 2019-11-14 | 2023-08-15 | Stmicroelectronics S.R.L. | Power MOSFET device having improved safe-operating area and on resistance, manufacturing process thereof and operating method thereof |
CN110676173B (zh) * | 2019-12-03 | 2020-03-17 | 上海瞻芯电子科技有限公司 | 半导体器件结构及其形成方法 |
CN113130647B (zh) * | 2019-12-30 | 2023-01-13 | 比亚迪半导体股份有限公司 | 碳化硅器件及其制备方法和半导体器件 |
CN113140633B (zh) * | 2020-01-17 | 2022-05-24 | 张清纯 | 一种半导体器件及其制造方法 |
IT202000015076A1 (it) | 2020-06-23 | 2021-12-23 | St Microelectronics Srl | Dispositivo elettronico in 4h-sic con prestazioni di corto circuito migliorate, e relativo metodo di fabbricazione |
CN115989582A (zh) * | 2020-07-24 | 2023-04-18 | 沃孚半导体公司 | 具有改善的坚固性的垂直半导体装置 |
CN111933710B (zh) * | 2020-08-03 | 2023-04-07 | 株洲中车时代半导体有限公司 | 碳化硅器件的元胞结构、其制备方法及碳化硅器件 |
EP4009375B1 (en) * | 2020-12-03 | 2024-03-06 | Hitachi Energy Ltd | Power semiconductor device and a method for producing a power semiconductor device |
EP4064362A1 (en) * | 2021-03-22 | 2022-09-28 | Hitachi Energy Switzerland AG | Power semiconductor device |
US11830943B2 (en) | 2021-07-26 | 2023-11-28 | Analog Power Conversion LLC | RF SiC MOSFET with recessed gate dielectric |
CN113707722B (zh) * | 2021-10-26 | 2022-02-18 | 北京世纪金光半导体有限公司 | 基于自对准的半导体器件及其制作方法 |
CN114464671B (zh) * | 2022-04-11 | 2022-07-01 | 江苏长晶浦联功率半导体有限公司 | 一种改善栅电容特性的超结mosfet |
Family Cites Families (64)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK157272C (da) | 1978-10-13 | 1990-04-30 | Int Rectifier Corp | Mosfet med hoej effekt |
JPS60196975A (ja) | 1984-08-24 | 1985-10-05 | Nissan Motor Co Ltd | 縦型mosfet |
US4803533A (en) | 1986-09-30 | 1989-02-07 | General Electric Company | IGT and MOSFET devices having reduced channel width |
DE69029180T2 (de) * | 1989-08-30 | 1997-05-22 | Siliconix Inc | Transistor mit Spannungsbegrenzungsanordnung |
JPH03142912A (ja) | 1989-10-30 | 1991-06-18 | Elna Co Ltd | 電解コンデンサ用アルミニウム箔のエッチング方法 |
IT1247293B (it) | 1990-05-09 | 1994-12-12 | Int Rectifier Corp | Dispositivo transistore di potenza presentante una regione ultra-profonda, a maggior concentrazione |
JPH04239718A (ja) | 1991-01-23 | 1992-08-27 | Toshiba Mach Co Ltd | 電子ビーム描画装置 |
JP2750986B2 (ja) | 1992-10-27 | 1998-05-18 | 尚茂 玉蟲 | 分割ゲート型カソード短絡構造を有する絶縁ゲート静電誘導サイリスタ |
JPH0778978A (ja) | 1993-09-07 | 1995-03-20 | Toyota Central Res & Dev Lab Inc | 縦型mos電界効果トランジスタ |
US5474946A (en) | 1995-02-17 | 1995-12-12 | International Rectifier Corporation | Reduced mask process for manufacture of MOS gated devices |
JP3272242B2 (ja) * | 1995-06-09 | 2002-04-08 | 三洋電機株式会社 | 半導体装置 |
JP3385938B2 (ja) | 1997-03-05 | 2003-03-10 | 株式会社デンソー | 炭化珪素半導体装置及びその製造方法 |
JP4075150B2 (ja) | 1998-03-20 | 2008-04-16 | 株式会社デンソー | 炭化珪素半導体装置及びその製造方法 |
US6573534B1 (en) * | 1995-09-06 | 2003-06-03 | Denso Corporation | Silicon carbide semiconductor device |
EP0879481B1 (de) * | 1996-02-05 | 2002-05-02 | Infineon Technologies AG | Durch feldeffekt steuerbares halbleiterbauelement |
US6084268A (en) * | 1996-03-05 | 2000-07-04 | Semiconductor Components Industries, Llc | Power MOSFET device having low on-resistance and method |
US5844259A (en) * | 1996-03-19 | 1998-12-01 | International Rectifier Corporation | Vertical conduction MOS controlled thyristor with increased IGBT area and current limiting |
EP0865085A1 (en) * | 1997-03-11 | 1998-09-16 | STMicroelectronics S.r.l. | Insulated gate bipolar transistor with high dynamic ruggedness |
US6031265A (en) | 1997-10-16 | 2000-02-29 | Magepower Semiconductor Corp. | Enhancing DMOS device ruggedness by reducing transistor parasitic resistance and by inducing breakdown near gate runners and termination area |
DE19830332C2 (de) * | 1998-07-07 | 2003-04-17 | Infineon Technologies Ag | Vertikales Halbleiterbauelement mit reduziertem elektrischem Oberflächenfeld |
JP2001077354A (ja) * | 1999-08-31 | 2001-03-23 | Miyazaki Oki Electric Co Ltd | 縦型絶縁ゲート半導体装置 |
US6504176B2 (en) | 2000-04-06 | 2003-01-07 | Matshushita Electric Industrial Co., Ltd. | Field effect transistor and method of manufacturing the same |
JP4029595B2 (ja) * | 2001-10-15 | 2008-01-09 | 株式会社デンソー | SiC半導体装置の製造方法 |
JP4537646B2 (ja) * | 2002-06-14 | 2010-09-01 | 株式会社東芝 | 半導体装置 |
JP3637052B2 (ja) * | 2002-11-29 | 2005-04-06 | 松下電器産業株式会社 | SiC−MISFET及びその製造方法 |
US6940110B2 (en) * | 2002-11-29 | 2005-09-06 | Matsushita Electric Industrial Co., Ltd. | SiC-MISFET and method for fabricating the same |
US7221010B2 (en) | 2002-12-20 | 2007-05-22 | Cree, Inc. | Vertical JFET limited silicon carbide power metal-oxide semiconductor field effect transistors |
JP4049095B2 (ja) | 2003-12-25 | 2008-02-20 | 日産自動車株式会社 | 半導体装置及びその製造方法 |
JP4237086B2 (ja) | 2004-03-22 | 2009-03-11 | 関西電力株式会社 | 電圧制御型半導体装置 |
US7661110B2 (en) | 2004-10-29 | 2010-02-09 | At&T Intellectual Property I, L.P. | Transaction tool management integration with change management |
US7569900B2 (en) | 2004-11-16 | 2009-08-04 | Kabushiki Kaisha Toshiba | Silicon carbide high breakdown voltage semiconductor device |
US7439583B2 (en) * | 2004-12-27 | 2008-10-21 | Third Dimension (3D) Semiconductor, Inc. | Tungsten plug drain extension |
JP4930894B2 (ja) | 2005-05-13 | 2012-05-16 | サンケン電気株式会社 | 半導体装置 |
US7504676B2 (en) * | 2006-05-31 | 2009-03-17 | Alpha & Omega Semiconductor, Ltd. | Planar split-gate high-performance MOSFET structure and manufacturing method |
DE102006036347B4 (de) | 2006-08-03 | 2012-01-12 | Infineon Technologies Austria Ag | Halbleiterbauelement mit einer platzsparenden Randstruktur |
US20080157117A1 (en) | 2006-12-28 | 2008-07-03 | Mcnutt Ty R | Insulated gate bipolar transistor with enhanced conductivity modulation |
US8835987B2 (en) | 2007-02-27 | 2014-09-16 | Cree, Inc. | Insulated gate bipolar transistors including current suppressing layers |
US8866150B2 (en) | 2007-05-31 | 2014-10-21 | Cree, Inc. | Silicon carbide power devices including P-type epitaxial layers and direct ohmic contacts |
CN101569015B (zh) * | 2007-10-15 | 2011-01-05 | 松下电器产业株式会社 | 半导体装置及其制造方法 |
US7989882B2 (en) | 2007-12-07 | 2011-08-02 | Cree, Inc. | Transistor with A-face conductive channel and trench protecting well region |
US7795691B2 (en) | 2008-01-25 | 2010-09-14 | Cree, Inc. | Semiconductor transistor with P type re-grown channel layer |
US8008747B2 (en) | 2008-02-28 | 2011-08-30 | Alpha & Omega Semiconductor, Ltd. | High power and high temperature semiconductor power devices protected by non-uniform ballasted sources |
US8232558B2 (en) | 2008-05-21 | 2012-07-31 | Cree, Inc. | Junction barrier Schottky diodes with current surge capability |
US7816229B2 (en) | 2008-09-30 | 2010-10-19 | Infineon Technologies Austria Ag | Semiconductor device with channel stop trench and method |
US7829402B2 (en) | 2009-02-10 | 2010-11-09 | General Electric Company | MOSFET devices and methods of making |
US8629509B2 (en) | 2009-06-02 | 2014-01-14 | Cree, Inc. | High voltage insulated gate bipolar transistors with minority carrier diverter |
US8829614B2 (en) | 2009-08-31 | 2014-09-09 | Alpha And Omega Semiconductor Incorporated | Integrated Schottky diode in high voltage semiconductor device |
JP5433352B2 (ja) | 2009-09-09 | 2014-03-05 | 株式会社東芝 | 半導体装置の製造方法 |
US8563986B2 (en) | 2009-11-03 | 2013-10-22 | Cree, Inc. | Power semiconductor devices having selectively doped JFET regions and related methods of forming such devices |
JP2011204711A (ja) * | 2010-03-24 | 2011-10-13 | Toshiba Corp | 半導体装置およびその製造方法 |
JP2011258635A (ja) * | 2010-06-07 | 2011-12-22 | Mitsubishi Electric Corp | 半導体装置 |
IT1401754B1 (it) | 2010-08-30 | 2013-08-02 | St Microelectronics Srl | Dispositivo elettronico integrato e relativo metodo di fabbricazione. |
US9472405B2 (en) | 2011-02-02 | 2016-10-18 | Rohm Co., Ltd. | Semiconductor power device and method for producing same |
JP5687128B2 (ja) | 2011-05-06 | 2015-03-18 | 三菱電機株式会社 | 半導体装置およびその製造方法 |
JP2012243966A (ja) | 2011-05-20 | 2012-12-10 | Sumitomo Electric Ind Ltd | 半導体装置 |
JP5869291B2 (ja) | 2011-10-14 | 2016-02-24 | 富士電機株式会社 | 半導体装置 |
JP2014022708A (ja) | 2012-07-17 | 2014-02-03 | Yoshitaka Sugawara | 半導体装置とその動作方法 |
CN104221152B (zh) | 2012-07-18 | 2017-10-10 | 富士电机株式会社 | 半导体装置以及半导体装置的制造方法 |
CN102832248A (zh) * | 2012-09-10 | 2012-12-19 | 西安电子科技大学 | 基于半超结的碳化硅mosfet及制作方法 |
US9530844B2 (en) | 2012-12-28 | 2016-12-27 | Cree, Inc. | Transistor structures having reduced electrical field at the gate oxide and methods for making same |
US10115815B2 (en) | 2012-12-28 | 2018-10-30 | Cree, Inc. | Transistor structures having a deep recessed P+ junction and methods for making same |
JP6219045B2 (ja) | 2013-03-22 | 2017-10-25 | 株式会社東芝 | 半導体装置およびその製造方法 |
US20150263145A1 (en) | 2014-03-14 | 2015-09-17 | Cree, Inc. | Igbt structure for wide band-gap semiconductor materials |
US20150311325A1 (en) | 2014-04-23 | 2015-10-29 | Cree, Inc. | Igbt structure on sic for high performance |
-
2012
- 2012-12-28 US US13/730,133 patent/US9530844B2/en active Active
-
2013
- 2013-12-04 EP EP21156949.6A patent/EP3840056A1/en active Pending
- 2013-12-04 CN CN201380068265.9A patent/CN105103297B/zh active Active
- 2013-12-04 WO PCT/US2013/073093 patent/WO2014105372A1/en active Application Filing
- 2013-12-04 KR KR1020157020113A patent/KR101735230B1/ko active IP Right Grant
- 2013-12-04 JP JP2015550412A patent/JP6475635B2/ja active Active
- 2013-12-04 EP EP13811320.4A patent/EP2939271B1/en active Active
-
2016
- 2016-11-07 US US15/344,735 patent/US10840367B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20170053987A1 (en) | 2017-02-23 |
JP2016506081A (ja) | 2016-02-25 |
EP3840056A1 (en) | 2021-06-23 |
EP2939271B1 (en) | 2021-04-21 |
WO2014105372A1 (en) | 2014-07-03 |
CN105103297B (zh) | 2019-03-01 |
US9530844B2 (en) | 2016-12-27 |
KR101735230B1 (ko) | 2017-05-12 |
KR20150099848A (ko) | 2015-09-01 |
US10840367B2 (en) | 2020-11-17 |
EP2939271A1 (en) | 2015-11-04 |
US20140183553A1 (en) | 2014-07-03 |
CN105103297A (zh) | 2015-11-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6475635B2 (ja) | ゲート酸化膜層において電界を低下させた半導体デバイス | |
JP7182594B2 (ja) | ゲート・トレンチと、埋め込まれた終端構造とを有するパワー半導体デバイス、及び、関連方法 | |
US10886396B2 (en) | Transistor structures having a deep recessed P+ junction and methods for making same | |
JP6066219B2 (ja) | 低いソース抵抗を有する電界効果トランジスタデバイス | |
US9041173B2 (en) | Semiconductor device | |
US8835987B2 (en) | Insulated gate bipolar transistors including current suppressing layers | |
JP5586887B2 (ja) | 半導体装置及びその製造方法 | |
JP2020092272A (ja) | トレンチ下部にオフセットを有するSiC半導体デバイス | |
US9349797B2 (en) | SiC devices with high blocking voltage terminated by a negative bevel | |
JPWO2009142233A1 (ja) | 半導体装置 | |
JP5473397B2 (ja) | 半導体装置およびその製造方法 | |
WO2015104949A1 (ja) | 炭化珪素半導体装置および炭化珪素半導体装置の製造方法 | |
JP2003101022A (ja) | 電力用半導体素子 | |
JP5676923B2 (ja) | 半導体装置の製造方法および半導体装置 | |
JP5473398B2 (ja) | 半導体装置およびその製造方法 | |
JP2023530711A (ja) | ハイブリッド・ゲート構造を有するパワー・デバイス | |
WO2013119548A1 (en) | Sic devices with high blocking voltage terminated by a negative bevel | |
CN113113464B (zh) | 一种半导体器件及其制造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20161205 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20161205 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20171114 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20171121 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180216 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20180515 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180813 |
|
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: 20190108 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20190201 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6475635 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |