JP5103830B2 - 絶縁ゲート型半導体装置 - Google Patents
絶縁ゲート型半導体装置 Download PDFInfo
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- 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
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- 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
- H01L29/083—Anode or cathode regions of thyristors or gated bipolar-mode devices
- H01L29/0839—Cathode regions of thyristors
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- 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
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- 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
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- 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]
- H01L29/7391—Gated diode structures
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- 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
- H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
- H01L29/861—Diodes
Description
本実施の形態1に係る絶縁ゲート型の半導体装置の断面図を図1に示す。この半導体装置はN型不純物を含むN−基板1を用いて形成され、N−基板1は第1主面(上主面)及び第2主面(下主面)を有している。N−基板1は少なくとも1つの領域A(第1領域)を有し、これに隣接するように、領域B(第2領域)が設けられている。領域Aにはエミッタ層3が設けられ、一方、領域Bにはエミッタ層3が設けられていない。
本実施の形態2に絶縁ゲート型半導体装置について、図9を参照して説明する。ここでは、実施の形態1と異なる点を中心に説明する。
本実施の形態3に係る絶縁ゲート型半導体装置について、図10を参照して説明する。ここでは、実施の形態1、2と異なる点を中心に説明する。
本実施の形態4に係る絶縁ゲート型半導体装置について、図12を参照して説明する。ここでは、実施の形態1と異なる点を中心に説明する。
本実施の形態5に係る絶縁ゲート型半導体装置について、図16及び図17を参照して説明する。ここでは、実施の形態1と異なる点を中心に説明する。
本実施の形態6に係る絶縁ゲート型半導体装置について、図18を参照して説明する。ここでは、実施の形態1、5と異なる点を中心に説明する。
本実施の形態7では、実施の形態1に示した絶縁ゲート型半導体装置の製造方法を中心に説明する。
本実施の形態8では、実施の形態2に示した絶縁ゲート型半導体装置の製造方法を中心に説明する。ここでは、実施の形態7と異なる点を中心に説明する。
本実施の形態9では、実施の形態3に示した絶縁ゲート型半導体装置の製造方法を中心に説明する。ここでは、実施の形態7と異なる点を中心に説明する。
Claims (6)
- 第1主面及び第2主面を有する第1導電型の半導体基板と、
前記半導体基板の少なくとも1つの第1領域及びこの領域に隣接する少なくとも1つの第2領域の前記第1主面の近傍に設けられた第2導電型の第1半導体層と、
前記第1領域の各領域ごとに複数設けられ、前記半導体基板の前記第1主面から前記第1半導体層を貫通する第1の溝と、
前記半導体基板の前記第1主面側で、前記第1領域の前記第1半導体層内の前記第1の溝の近傍に選択的に設けられた第1導電型の第2半導体層と、
前記第1の溝の内面を覆う第1の絶縁膜と、
前記第1の絶縁膜を介して前記第1の溝の内部に埋め込まれた第1の導電膜と、
前記第2領域の各領域ごとに複数設けられ、前記半導体基板の前記第1主面から前記第1半導体層を貫通する第2の溝と、
前記第2の溝の内面を覆う第2の絶縁膜と、
前記第2の絶縁膜を介して前記第2の溝に埋め込まれた第2の導電膜と、
前記第1半導体層及び前記第2半導体層の上に設けられ、これらの層と電気的に接続された第1主電極と、
前記第1領域の前記第2半導体層と対向する位置で前記半導体基板の前記第2主面に設けられた第2導電型の第3半導体層と、
前記第2領域の前記第1半導体層と対向する位置で前記半導体基板の前記第2主面に設けられた第1導電型の第4半導体層と、
前記第3半導体層及び前記第4半導体層を覆い、前記半導体基板の前記第2主面に設けられた第2主電極と、
を備え、
前記第1領域の幅及び前記第2領域の幅は50μm以上であることを特徴とする絶縁ゲート型半導体装置。 - 前記第1領域の幅は、前記第2領域の幅よりも広いことを特徴とする請求項1に記載の絶縁ゲート型半導体装置。
- 前記第1の溝の間隔、及び前記第2の溝の間隔は、10μm以下であることを特徴とする請求項1又は2に記載の絶縁ゲート型半導体装置。
- 前記第1及び第2領域において前記半導体基板の前記第1半導体層の前記第2主面側で前記第1半導体層と接し、前記半導体基板よりも不純物濃度が高い第1導電型の第5半導体層が設けられていることを特徴とする請求項1〜3の何れかに記載の絶縁ゲート型半導体装置。
- 前記第2領域に設けられた前記第1半導体層の不純物濃度は、前記第1領域に設けられた前記第1半導体層の不純物濃度よりも低いことを特徴とする請求項1〜4の何れかに記載の絶縁ゲート型半導体装置。
- 前記第1領域の前記複数の前記第1の溝は、第1の間隔で等間隔に設けられ、
前記第2領域の前記複数の前記第2の溝は、第2の間隔で等間隔に設けられ、
前記第2の間隔は、前記第1の間隔よりも小さいことを特徴とする請求項1〜5の何れかに記載の絶縁ゲート型半導体装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006231124A JP5103830B2 (ja) | 2006-08-28 | 2006-08-28 | 絶縁ゲート型半導体装置 |
US11/670,136 US7847345B2 (en) | 2006-08-28 | 2007-02-01 | Insulated gate semiconductor device and method for manufacturing the same |
DE102007024113A DE102007024113B4 (de) | 2006-08-28 | 2007-05-24 | Halbleitervorrichtung mit isoliertem Gate und Verfahren zur Herstellung derselben |
CNA2007101045635A CN101136405A (zh) | 2006-08-28 | 2007-05-25 | 绝缘栅型半导体装置及其制造方法 |
KR1020070051285A KR100878287B1 (ko) | 2006-08-28 | 2007-05-28 | 절연 게이트형 반도체장치 및 그 제조 방법 |
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JP2006231124A JP5103830B2 (ja) | 2006-08-28 | 2006-08-28 | 絶縁ゲート型半導体装置 |
Publications (2)
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JP2008053648A JP2008053648A (ja) | 2008-03-06 |
JP5103830B2 true JP5103830B2 (ja) | 2012-12-19 |
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JP2006231124A Active JP5103830B2 (ja) | 2006-08-28 | 2006-08-28 | 絶縁ゲート型半導体装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7847345B2 (ja) |
JP (1) | JP5103830B2 (ja) |
KR (1) | KR100878287B1 (ja) |
CN (1) | CN101136405A (ja) |
DE (1) | DE102007024113B4 (ja) |
Cited By (1)
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DE102022119699A1 (de) | 2021-10-21 | 2023-04-27 | Mitsubishi Electric Corporation | Halbleitervorrichtung und Verfahren zum Herstellen einer Halbleitervorrichtung |
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