WO2001065606A2 - Feldeffekt-transistoranordnung mit hoher latch-up-festigkeit und verfahren zu deren herstellung - Google Patents
Feldeffekt-transistoranordnung mit hoher latch-up-festigkeit und verfahren zu deren herstellung Download PDFInfo
- Publication number
- WO2001065606A2 WO2001065606A2 PCT/DE2001/000617 DE0100617W WO0165606A2 WO 2001065606 A2 WO2001065606 A2 WO 2001065606A2 DE 0100617 W DE0100617 W DE 0100617W WO 0165606 A2 WO0165606 A2 WO 0165606A2
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- WIPO (PCT)
- Prior art keywords
- trench
- effect transistor
- region
- source region
- transistor arrangement
- Prior art date
Links
- 230000005669 field effect Effects 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 239000000758 substrate Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 18
- 210000000746 body region Anatomy 0.000 claims description 16
- 239000004065 semiconductor Substances 0.000 claims description 16
- 238000002513 implantation Methods 0.000 claims description 15
- 238000005468 ion implantation Methods 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 8
- 238000009792 diffusion process Methods 0.000 claims description 5
- 230000035876 healing Effects 0.000 claims description 5
- 238000005530 etching Methods 0.000 description 6
- 238000001465 metallisation Methods 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 239000005380 borophosphosilicate glass Substances 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7813—Vertical DMOS transistors, i.e. VDMOS transistors with trench gate electrode, e.g. UMOS transistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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 adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System 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
- H01L21/26586—Bombardment with radiation with high-energy radiation producing ion implantation characterised by the angle between the ion beam and the crystal planes or the main crystal surface
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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 adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/417—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
- H01L29/41725—Source or drain electrodes for field effect devices
- H01L29/41766—Source or drain electrodes for field effect devices with at least part of the source or drain electrode having contact below the semiconductor surface, e.g. the source or drain electrode formed at least partially in a groove or with inclusions of conductor inside the semiconductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
Definitions
- a source region of the first conductivity type which is arranged along the trench and extends from the first surface of the semiconductor substrate from m the semiconductor substrate,
- a body geoiet of a second conduction type which is opposite to the first conduction type, the body region extending under the source region and adjoining the trench,
- At least one highly doped area of the second line type in the body area which is at least partially below the
- Source region is arranged and adjacent to the source region.
- the invention also relates to a method for producing such a field-effect transistor arrangement.
- a field-effect transistor arrangement of the type mentioned at the outset, in which the highly doped region of the second conductivity type is at least partially adjacent to the trench, is known from the international patent application PCT / DE98 / 03747.
- IGBTs In particular for IGBTs, very high demands are placed on their overcurrent switch-off capability and latch-up resistance for use in modules in traction or converter applications.
- the ability of IGBTs to switch off overcurrents is generally limited by the firing of a parasitic thyristor structure in the IGBT.
- the trench - or trench - enables an increase in the charge carrier density on the front side, that is to say in the region of the source, which significantly improves the transmission properties of the transistor arrangement.
- This object is achieved according to the invention in a field effect transistor arrangement of the type mentioned at the outset in that the source region extends from the first surface of the semiconductor substrate along the trench to below the highly doped region of the second conductivity type in the body region.
- the source region extends from the first surface of the semiconductor substrate along the trench to below the highly doped region of the second conductivity type in the body region, the source region has an “angled” profile.
- the layer thickness of the source region along the trench is less than about 500 nm.
- Such flat doping regions can be created by near-surface ion implantation. If, as usual, the semiconductor substrate consists of silicon, then ions can be implanted to a depth of less than 100 nm, which is followed by a temperature treatment for the healing of the crystal lattice, in which the above-mentioned layer thickness of up to 500 nm is then achieved.
- the highly doped region of the second conductivity type has a lower edge which is lower than the lower edge of the source region in the region away from the wall of the trench.
- the doping concentration in this highly doped region of the second conductivity type is considerably higher than in the body region of the second conductivity type, but not so high that the source region on the surface and on the wall of the trench is redoped.
- the field effect transistor arrangement according to the invention is also distinguished by a very small distance of less than approximately 500 nm between the highly doped region of the second conductivity type and the MOS channel running along the side wall of the trench in the body region. This small distance arises, as will be explained in more detail below, by a self-controlled process control.
- the field-effect transistor arrangement according to the invention and in particular the source region with the angled doping profile can be produced in various ways. However, it is particularly advantageous if the line material filling the trench is first etched back on the side adjacent to the body area and then a source implantation is carried out at an oblique angle of incidence. In this partial recess of the line material filling the trench, which can in particular be doped polycrystalline silicon, care should be taken to ensure that an opening bend between the front edge of the remaining line material on the side adjacent to the body region and the front edge of the non-etched line material with respect to the perpendicular to the surface of the semiconductor substrate is greater than about 30 °.
- the Implantource implantation is preferably carried out at the oblique angle of incidence, as a result of which the aforementioned doping profile for the source region is formed on the surface of the semiconductor substrate and on the side wall of the trench.
- the doping of the source region can also be carried out by an Of n allocation process, with which the desired angled doping profile is also achieved.
- the highly doped region of the second conductivity type is also preferably produced by ion implantation.
- the lower edge of this highly doped region of the second conductivity type is lower than the lower edge of the source region in an area away from the wall of the trench, as has already been mentioned above.
- the first line type is preferably the n line type, so that the second line type is the p line type.
- the specified cable types can also be reversed.
- Fig. 1 is a sectional view of an IGBT as an exemplary embodiment of the invention
- 10 to 13 are sectional views for explaining a third exemplary embodiment of the method according to the invention.
- FIG. 1 shows a schematic sectional illustration of an exemplary embodiment of an IGBT according to the invention.
- n ' -conducting substrate region 1 made of silicon, which forms an n ⁇ -le ⁇ tenend base of the IGBT there are trenches 2, which are introduced into the substrate region 1, for example by etching.
- the walls of these trenches 2 are covered with an insulation layer 4 made of silicon dioxide, for example, which also extends on a first surface 3 of the substrate region 1.
- n + -type source region 6 which has an angled doping profile and extends from the first surface 3 from along the trench 2 to below the p * -conducting region 8 in the body region 7.
- the trenches 2 are filled on the insulation layer 4 with a line material 5, which is preferably doped polycrystalline silicon.
- the line material 5 is partially etched back, whereby the side wall of the trench 2 is exposed to a depth t (200 nm ⁇ t ⁇ 1000 nm).
- the opening angle formed thereby should - especially in the exemplary embodiments of FIGS. 2 to 9 - be greater than 30 °.
- n " -type base which consists of the substrate region 1, also forms an n ' -type drain region 10, which is arranged on a p-type emitter 11, on the second surface 12 opposite the surface 3, a rear-side metallization 13 for example aluminum is applied.
- an insulating layer 14 made of, for example, borophosphosilicate glass, into which a window is introduced, through which a front-side metallization 15 made of, for example, aluminum serves in the window of the insulating layer 14 as a trench contact for connecting the source region 6 and the highly doped region 8.
- FIGS. 2 to 13 Two exemplary embodiments of a method for producing the field-effect transistor arrangement according to the invention are explained below with reference to FIGS. 2 to 13.
- a so-called "tilted source implantation” is carried out.
- the line material 5 is partially removed by a defined projection, so that the edge of the conductor material 5 (“poly edge”) is located at a depth t of 0.2 ⁇ m to 1.0 ⁇ m and an opening angle ⁇ arises.
- the highly doped region 8 is then carried out by ion implantation of boron at an angle of incidence of 0 ° to the normal on the surface 3, as is illustrated by arrows 16 (“implantation of p + -le ⁇ tendem Geoiet 8”).
- the dose of this ion implantation is chosen so that, in the case of a later source implantation to produce the source region 6, the p * -leading, highly doped region near the surface is redoped.
- An ion implantation with preferably arsenic and / or phosphorus is then carried out with a tilt of 30 to 45 ° to the normal to the surface 3 in order to generate the source region 6 (cf. FIG. 4). 4 from all four sides of a rectangle or square (“quad mode”), so that the four sides of a trench cell which is square or rectangular in plan view are implanted.
- the implantation under the tilt of 30 to 45 ° for the source region 6 is illustrated in FIG. 4 by arrows 17.
- the front-side metallization 15 is finally applied.
- the exemplary embodiment in FIGS. 2 to 5 allows the source region 6 to be produced in a self-adjusted manner by the tilted implantation (cf. arrows 17).
- the layer thickness d (cf. FIG. 1) of the source region 6 along the wall of the trench 2 is in the range below 500 nm, so that the distance between the highly doped region 8 and the MOS channel is present the side wall of the trench 2 is extremely small, this distance being easily adjustable by the self-aligned process control via the tilting angle of the implantation and the energy of the implantation (cf. arrows 17 in FIG. 4).
- 6 to 9 show a second exemplary embodiment of the method according to the invention, in which a “tilted ⁇ ource implantation with a second recess etching” is carried out.
- the line material 5 that is to say polycrystalline silicon
- the line material 5 is first etched with a defined overlap, so that the poly edge is at a depth t1 that is less than 0.2 ⁇ m.
- This is followed by an implantation of boron at an angle of incidence of 0 ° to produce the highly doped region 8, the doping dose being selected again such that the later source implantation redoped the highly doped region 8 close to the surface.
- the structure shown in Fig. 6 is thus obtained.
- a second recess etching of the line material 5 then follows, so that the poly edge in the trench 2 is located at a depth t2 of 0.2 to 1.0 ⁇ (cf. FIG. 7).
- the opening angle ⁇ is greater than approximately 30 °.
- the gate oxide that is to say the insulation layer 4
- the source region 6 is then implanted, which is done from all sides with a tilt of 30 to 45 ° (cf. FIG. 8), so that the four sides of the trench cell, which is square or rectangular in plan view, are implanted.
- the front-side metallization 15 made of aluminum, for example, is applied in order to finally obtain the structure shown in FIG. 9.
- FIGS. 10 to 13 show a further exemplary embodiment of the method according to the invention.
- an etching of the line material is carried out, that is, the doped polycrystalline silicon layer in the trench 2, made with a defined overetch so that the poly edge is at a depth t of approximately 0.4 to 1.0 ⁇ m (cf. FIG. 10).
- the highly doped region 8 is then carried out by ion implantation of boron at an angle of incidence of 0 ° to the normal to the surface 3 (cf. arrows 16 in FIG. 13), the implantation dose being such is chosen that the source region 6 is not redoped in the vicinity of the surface.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/229,980 US20030060014A1 (en) | 2000-02-28 | 2002-08-28 | Field effect transistor configuration with high latch-up resistance, and method for its production |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10009345A DE10009345C1 (de) | 2000-02-28 | 2000-02-28 | Feldeffekt-Transistoranordnung mit hoher Latch-up-Festigkeit und Verfahren zu deren Herstellung |
DE10009345.0 | 2000-02-28 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/229,980 Continuation US20030060014A1 (en) | 2000-02-28 | 2002-08-28 | Field effect transistor configuration with high latch-up resistance, and method for its production |
Publications (2)
Publication Number | Publication Date |
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WO2001065606A2 true WO2001065606A2 (de) | 2001-09-07 |
WO2001065606A3 WO2001065606A3 (de) | 2002-02-14 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/DE2001/000617 WO2001065606A2 (de) | 2000-02-28 | 2001-02-14 | Feldeffekt-transistoranordnung mit hoher latch-up-festigkeit und verfahren zu deren herstellung |
Country Status (3)
Country | Link |
---|---|
US (1) | US20030060014A1 (de) |
DE (1) | DE10009345C1 (de) |
WO (1) | WO2001065606A2 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100729923B1 (ko) * | 2005-03-31 | 2007-06-18 | 주식회사 하이닉스반도체 | 스텝 sti 프로파일을 이용한 낸드 플래쉬 메모리 소자의트랜지스터 형성방법 |
US7880200B2 (en) * | 2007-09-28 | 2011-02-01 | Infineon Technologies Austria Ag | Semiconductor device including a free wheeling diode |
JP2010147219A (ja) * | 2008-12-18 | 2010-07-01 | Renesas Electronics Corp | 半導体装置及びその製造方法 |
DE102015118616B3 (de) * | 2015-10-30 | 2017-04-13 | Infineon Technologies Austria Ag | Latchup-fester Transistor |
CN109873032A (zh) * | 2017-12-05 | 2019-06-11 | 株洲中车时代电气股份有限公司 | 一种沟槽栅igbt器件及其制造方法 |
CN111540783B (zh) * | 2020-01-16 | 2023-09-26 | 重庆康佳光电科技有限公司 | 一种金属-氧化物半导体场效应晶体管及其制备方法 |
EP4258360A1 (de) * | 2022-04-04 | 2023-10-11 | Hitachi Energy Switzerland AG | Herstellungsverfahren für ein halbleiterbauelement und halbleiterbauelement |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997000536A1 (en) * | 1995-06-14 | 1997-01-03 | Totem Semiconductor Ltd | Semiconductor device fabrication |
EP0755076A2 (de) * | 1995-07-21 | 1997-01-22 | Mitsubishi Denki Kabushiki Kaisha | Vertikale MOS-Halbleiteranordnung mit versenktem Gate und Herstellungsverfahren |
US5895951A (en) * | 1996-04-05 | 1999-04-20 | Megamos Corporation | MOSFET structure and fabrication process implemented by forming deep and narrow doping regions through doping trenches |
WO2000038244A1 (de) * | 1998-12-18 | 2000-06-29 | Infineon Technologies Ag | Feldeffekt-transistoranordnung mit einer grabenförmigen gate-elektrode und einer zusätzlichen hochdotierten schicht im bodygebiet |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01185976A (ja) * | 1988-01-20 | 1989-07-25 | Mitsubishi Electric Corp | パワーmos−fet |
JPH01198076A (ja) * | 1988-02-02 | 1989-08-09 | Mitsubishi Electric Corp | 半導体装置 |
JPH0493083A (ja) * | 1990-08-08 | 1992-03-25 | Matsushita Electron Corp | 半導体装置およびその製造方法 |
GB9313843D0 (en) * | 1993-07-05 | 1993-08-18 | Philips Electronics Uk Ltd | A semiconductor device comprising an insulated gate field effect transistor |
EP0853818A4 (de) * | 1995-08-21 | 1998-11-11 | Siliconix Inc | Niederspannungs-kurzkanal-graben-dmos-transistor |
JP3521648B2 (ja) * | 1996-09-30 | 2004-04-19 | 株式会社デンソー | 半導体装置の製造方法 |
DE19750827A1 (de) * | 1997-11-17 | 1999-05-20 | Asea Brown Boveri | Leistungshalbleiterbauelement mit Emitterinjektionssteuerung |
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2000
- 2000-02-28 DE DE10009345A patent/DE10009345C1/de not_active Expired - Fee Related
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2001
- 2001-02-14 WO PCT/DE2001/000617 patent/WO2001065606A2/de active Application Filing
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2002
- 2002-08-28 US US10/229,980 patent/US20030060014A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1997000536A1 (en) * | 1995-06-14 | 1997-01-03 | Totem Semiconductor Ltd | Semiconductor device fabrication |
EP0755076A2 (de) * | 1995-07-21 | 1997-01-22 | Mitsubishi Denki Kabushiki Kaisha | Vertikale MOS-Halbleiteranordnung mit versenktem Gate und Herstellungsverfahren |
US5895951A (en) * | 1996-04-05 | 1999-04-20 | Megamos Corporation | MOSFET structure and fabrication process implemented by forming deep and narrow doping regions through doping trenches |
WO2000038244A1 (de) * | 1998-12-18 | 2000-06-29 | Infineon Technologies Ag | Feldeffekt-transistoranordnung mit einer grabenförmigen gate-elektrode und einer zusätzlichen hochdotierten schicht im bodygebiet |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 013, no. 474 (E-836), 26. Oktober 1989 (1989-10-26) & JP 01 185976 A (MITSUBISHI ELECTRIC CORP), 25. Juli 1989 (1989-07-25) * |
PATENT ABSTRACTS OF JAPAN vol. 013, no. 493 (E-842), 8. November 1989 (1989-11-08) & JP 01 198076 A (MITSUBISHI ELECTRIC CORP), 9. August 1989 (1989-08-09) * |
PATENT ABSTRACTS OF JAPAN vol. 016, no. 322 (E-1233), 14. Juli 1992 (1992-07-14) & JP 04 093083 A (MATSUSHITA ELECTRON CORP), 25. März 1992 (1992-03-25) * |
Also Published As
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US20030060014A1 (en) | 2003-03-27 |
WO2001065606A3 (de) | 2002-02-14 |
DE10009345C1 (de) | 2001-07-19 |
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