JP2021150375A - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
- Publication number
- JP2021150375A JP2021150375A JP2020046499A JP2020046499A JP2021150375A JP 2021150375 A JP2021150375 A JP 2021150375A JP 2020046499 A JP2020046499 A JP 2020046499A JP 2020046499 A JP2020046499 A JP 2020046499A JP 2021150375 A JP2021150375 A JP 2021150375A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- layer
- contact
- semiconductor
- type
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004065 semiconductor Substances 0.000 title claims abstract description 129
- 239000012535 impurity Substances 0.000 claims description 21
- 239000010410 layer Substances 0.000 description 145
- 229910052751 metal Inorganic materials 0.000 description 41
- 239000002184 metal Substances 0.000 description 41
- 238000009792 diffusion process Methods 0.000 description 18
- 239000011229 interlayer Substances 0.000 description 16
- 238000005530 etching Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 229910052814 silicon oxide Inorganic materials 0.000 description 4
- 108091006146 Channels Proteins 0.000 description 3
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 3
- 230000003213 activating effect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000001020 plasma etching Methods 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- -1 for example Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7813—Vertical DMOS transistors, i.e. VDMOS transistors with trench gate electrode, e.g. UMOS transistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—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
-
- 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
- H01L29/0856—Source regions
- H01L29/086—Impurity concentration or distribution
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/10—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/1095—Body region, i.e. base region, of DMOS transistors or IGBTs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/36—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the concentration or distribution of impurities in the bulk material
-
- 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
- H01L29/401—Multistep manufacturing processes
-
- 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
- H01L29/41725—Source or drain electrodes for field effect devices
- H01L29/41741—Source or drain electrodes for field effect devices for vertical or pseudo-vertical devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/417—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
- H01L29/41725—Source or drain electrodes for field effect devices
- H01L29/41766—Source or drain electrodes for field effect devices with at least part of the source or drain electrode having contact below the semiconductor surface, e.g. the source or drain electrode formed at least partially in a groove or with inclusions of conductor inside the semiconductor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/45—Ohmic electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/45—Ohmic electrodes
- H01L29/456—Ohmic electrodes on silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/495—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET the conductor material next to the insulator being a simple metal, e.g. W, Mo
- H01L29/4958—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET the conductor material next to the insulator being a simple metal, e.g. W, Mo with a multiple layer structure
-
- 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
- H01L29/66484—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with multiple gate, at least one gate being an 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
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66674—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/66712—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/66727—Vertical DMOS transistors, i.e. VDMOS transistors with a step of recessing the source electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66674—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/66712—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/66734—Vertical DMOS transistors, i.e. VDMOS transistors with a step of recessing the gate electrode, e.g. to form a trench gate electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
- H01L29/7809—Vertical DMOS transistors, i.e. VDMOS transistors having both source and drain contacts on the same surface, i.e. Up-Drain 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
- H01L29/76—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
- H01L29/7831—Field effect transistors with field effect produced by an insulated gate with multiple gate structure
-
- 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
- H01L29/42376—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 length or the sectional shape
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Electrodes Of Semiconductors (AREA)
Abstract
Description
Claims (8)
- 半導体部と、
前記半導体部の裏面側に設けられた第1電極と、
前記半導体部の表面側に設けられ、前記半導体部中に延在する第1コンタクト部と、前記半導体部の前記表面に接する第2コンタクト部とを含む第2電極と、
前記半導体部と前記第2電極との間において、前記半導体部に設けられたトレンチの内部に配置され、前記半導体部から第1絶縁膜により電気的に絶縁され、前記第2電極から第2絶縁膜により電気的に絶縁された制御電極と、
を備え、
前記半導体部は、第1導電形の第1層と、第2導電形の第2層と、前記第1導電形の第3層と、を含み、
前記第1層は、前記第1電極と前記第2電極との間に延在し、前記トレンチは、前記半導体部の前記表面から前記第1層に至る深さを有し、
前記第2層は、前記第1層と前記第2電極との間に設けられ、前記第1絶縁膜を介して前記制御電極に向き合い、
前記第3層は、前記第2層と前記第2電極との間に設けられ、前記第1絶縁膜、前記第1コンタクト部および前記第2コンタクト部に接し、前記第2電極に電気的に接続され、
前記第1コンタクト部は、前記第1電極から前記第2電極に向かう第1方向に並ぶ第1位置および第2位置において、前記半導体部の前記表面に沿って前記制御電極から前記第1コンタクト部に向かう第2方向の第1幅と、前記第2方向の第2幅とをそれぞれ有し、前記第1位置は、前記第1電極と前記第2位置との間に位置し、前記第1幅は、前記第2幅よりも広い半導体装置。 - 前記半導体部は、前記第2層と前記第1コンタクト部との間に設けられ、前記第2層の第2導電形不純物の濃度よりも高濃度の第2導電形不純物を含み、前記第1コンタクト部に接し、前記第2電極に電気的に接続された前記第2導電形の第4層をさらに含む請求項1記載の半導体装置。
- 前記半導体部の前記第4層は、前記第2層中に位置し、前記第2層は、前記第4層を介して前記第2電極に電気的に接続される請求項2記載の半導体装置。
- 前記半導体部の前記第3層は、前記第1コンタクト部の側面と前記第1絶縁膜との間に位置し、前記第1コンタクト部の前記側面に接する請求項1〜3のいずれか1つに記載の半導体装置。
- 前記第2コンタクト部は、前記第2方向における前記第2絶縁膜の端と、前記第1コンタクト部と、の間に設けられる請求項1〜4のいずれか1つに記載の半導体装置。
- 前記半導体部の前記トレンチの内部に設けられ、前記第1方向において、前記制御電極よりも前記第1電極に近い位置に配置される部分を含む第3電極をさらに備え、
前記第3電極は、前記半導体部の前記第1層から第3絶縁膜により電気的に絶縁され、前記第2電極に電気的に接続された請求項1〜5のいずれか1つに記載の半導体装置。 - 前記制御電極は、前記第2方向に並んだ第1部分と第2部分とを含み、
前記第3電極は、前記第1部分と前記第2部分との間に延在し、前記制御電極から第4絶縁膜により電気的に絶縁される請求項6記載の半導体装置。 - 前記第3電極は、前記第1電極と前記制御電極との間に位置し、前記制御電極から第4絶縁膜により電気的に絶縁される請求項6記載の半導体装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020046499A JP7319496B2 (ja) | 2020-03-17 | 2020-03-17 | 半導体装置 |
CN202010798566.9A CN113410302A (zh) | 2020-03-17 | 2020-08-11 | 半导体装置 |
US17/012,129 US11177357B2 (en) | 2020-03-17 | 2020-09-04 | Semiconductor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2020046499A JP7319496B2 (ja) | 2020-03-17 | 2020-03-17 | 半導体装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2021150375A true JP2021150375A (ja) | 2021-09-27 |
JP7319496B2 JP7319496B2 (ja) | 2023-08-02 |
Family
ID=77677302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2020046499A Active JP7319496B2 (ja) | 2020-03-17 | 2020-03-17 | 半導体装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US11177357B2 (ja) |
JP (1) | JP7319496B2 (ja) |
CN (1) | CN113410302A (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7387566B2 (ja) * | 2020-09-18 | 2023-11-28 | 株式会社東芝 | 半導体装置 |
US20230207682A1 (en) * | 2021-12-23 | 2023-06-29 | Vanguard International Semiconductor Corporation | Semiconductor device and method forming the same |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006202931A (ja) * | 2005-01-20 | 2006-08-03 | Renesas Technology Corp | 半導体装置およびその製造方法 |
US20120025283A1 (en) * | 2010-07-29 | 2012-02-02 | Samsung Electronics Co., Ltd. | Memory device |
JP2013065749A (ja) * | 2011-09-20 | 2013-04-11 | Toshiba Corp | 半導体装置 |
JP2013201361A (ja) * | 2012-03-26 | 2013-10-03 | Denso Corp | 半導体装置及び半導体装置の製造方法 |
JP2016063004A (ja) * | 2014-09-16 | 2016-04-25 | 株式会社東芝 | 半導体装置及びその製造方法 |
US20190081147A1 (en) * | 2017-09-13 | 2019-03-14 | Polar Semiconductor, Llc | Mosfet with vertical variation of gate-pillar separation |
JP2019057603A (ja) * | 2017-09-20 | 2019-04-11 | 株式会社東芝 | 半導体装置及びその製造方法 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3517514B2 (ja) * | 1996-03-27 | 2004-04-12 | 株式会社東芝 | 半導体装置 |
JP2001015738A (ja) * | 1999-06-29 | 2001-01-19 | Toshiba Corp | 半導体装置 |
JP3709814B2 (ja) * | 2001-01-24 | 2005-10-26 | 株式会社豊田中央研究所 | 半導体装置とその製造方法 |
JP3673231B2 (ja) * | 2002-03-07 | 2005-07-20 | 三菱電機株式会社 | 絶縁ゲート型半導体装置及びゲート配線構造の製造方法 |
JP4004843B2 (ja) | 2002-04-24 | 2007-11-07 | Necエレクトロニクス株式会社 | 縦型mosfetの製造方法 |
JP2006140263A (ja) | 2004-11-11 | 2006-06-01 | Sanken Electric Co Ltd | 半導体素子及び半導体素子の製造方法 |
JP2008160039A (ja) | 2006-12-26 | 2008-07-10 | Nec Electronics Corp | 半導体装置及びその製造方法 |
CN102576723B (zh) | 2009-10-23 | 2014-09-24 | 松下电器产业株式会社 | 半导体装置及其制造方法 |
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 |
JP2013182935A (ja) | 2012-02-29 | 2013-09-12 | Toshiba Corp | 半導体装置およびその製造方法 |
JP2013182934A (ja) | 2012-02-29 | 2013-09-12 | Toshiba Corp | 半導体装置およびその製造方法 |
CN105378932B (zh) * | 2014-01-16 | 2017-10-31 | 富士电机株式会社 | 半导体装置 |
JP6203697B2 (ja) | 2014-09-30 | 2017-09-27 | 株式会社東芝 | 半導体装置およびその製造方法 |
JP2016163019A (ja) | 2015-03-05 | 2016-09-05 | 株式会社東芝 | 半導体装置 |
JP2019195007A (ja) * | 2018-05-01 | 2019-11-07 | 良孝 菅原 | 半導体装置およびその製造方法 |
-
2020
- 2020-03-17 JP JP2020046499A patent/JP7319496B2/ja active Active
- 2020-08-11 CN CN202010798566.9A patent/CN113410302A/zh active Pending
- 2020-09-04 US US17/012,129 patent/US11177357B2/en active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006202931A (ja) * | 2005-01-20 | 2006-08-03 | Renesas Technology Corp | 半導体装置およびその製造方法 |
US20120025283A1 (en) * | 2010-07-29 | 2012-02-02 | Samsung Electronics Co., Ltd. | Memory device |
JP2013065749A (ja) * | 2011-09-20 | 2013-04-11 | Toshiba Corp | 半導体装置 |
JP2013201361A (ja) * | 2012-03-26 | 2013-10-03 | Denso Corp | 半導体装置及び半導体装置の製造方法 |
JP2016063004A (ja) * | 2014-09-16 | 2016-04-25 | 株式会社東芝 | 半導体装置及びその製造方法 |
US20190081147A1 (en) * | 2017-09-13 | 2019-03-14 | Polar Semiconductor, Llc | Mosfet with vertical variation of gate-pillar separation |
JP2019057603A (ja) * | 2017-09-20 | 2019-04-11 | 株式会社東芝 | 半導体装置及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US11177357B2 (en) | 2021-11-16 |
CN113410302A (zh) | 2021-09-17 |
JP7319496B2 (ja) | 2023-08-02 |
US20210296456A1 (en) | 2021-09-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US9716152B2 (en) | Semiconductor device with electric field relaxation portion in insulating layer between lower and upper trench electrodes | |
CN106463504A (zh) | 半导体装置以及半导体装置的制造方法 | |
JP6818712B2 (ja) | 半導体装置 | |
JP2013125827A (ja) | 半導体装置およびその製造方法 | |
JP2009117715A (ja) | 半導体装置及びその製造方法 | |
JP6958575B2 (ja) | 半導体装置およびその製造方法 | |
JP7247061B2 (ja) | 半導体装置およびその製造方法 | |
US20220037523A1 (en) | Semiconductor device and method for manufacturing same | |
CN106611784A (zh) | 半导体器件及其制造方法 | |
US10128368B2 (en) | Double gate trench power transistor and manufacturing method thereof | |
JP2021150375A (ja) | 半導体装置 | |
JP2021034444A (ja) | 半導体装置 | |
JP7256770B2 (ja) | 半導体装置 | |
TW201733112A (zh) | 溝槽式功率半導體元件 | |
JP7157719B2 (ja) | 半導体装置の製造方法 | |
JP2012004466A (ja) | 半導体装置 | |
JP7106476B2 (ja) | 半導体装置およびその製造方法 | |
JP4146857B2 (ja) | 半導体装置及びその製造方法 | |
JP2021197525A (ja) | 半導体装置及びその製造方法 | |
JP2023132722A (ja) | 半導体装置 | |
US11721732B2 (en) | Semiconductor device with control electrodes provided in trenches of different widths | |
CN116632052B (zh) | 一种沟槽栅igbt器件及其制备方法 | |
EP4343856A1 (en) | Semiconductor device and method for manufacturing same | |
CN115910795B (zh) | 一种屏蔽栅功率器件及其制备方法 | |
JP7009933B2 (ja) | 半導体装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20211207 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20221128 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20221209 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20230201 |
|
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: 20230525 |
|
RD01 | Notification of change of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7421 Effective date: 20230623 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20230623 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 7319496 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |