JP2014072412A - 半導体装置 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 29
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- 239000000758 substrate Substances 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 13
- 239000011229 interlayer Substances 0.000 claims description 12
- 239000002344 surface layer Substances 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 241000670727 Amida Species 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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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
- H01L29/76—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
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- H01L23/00—Details of semiconductor or other solid state devices
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- H01L23/482—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of lead-in layers inseparably applied to the semiconductor body
- H01L23/485—Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads, terminal arrangements ; Selection of materials therefor consisting of lead-in layers inseparably applied to the semiconductor body consisting of layered constructions comprising conductive layers and insulating layers, e.g. planar contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/10—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration
- H01L27/105—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration including field-effect components
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- 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
- H01L29/42324—Gate electrodes for transistors with a floating gate
- H01L29/42336—Gate electrodes for transistors with a floating gate with one gate at least partly formed in a trench
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- 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
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- 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
-
- 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
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- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Electrodes Of Semiconductors (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
【解決手段】トレンチゲートを備えるトランジスタにおいて、ゲートコンタクト孔を、トレンチ上に設ける。
【選択図】図1
Description
(第1の実施形態)
図1は、本実施形態に係るトレンチMOSFETを有する半導体装置の一部平面図であり、図2は図1のA−A´における概略断面図である。
本実施形態では、第1の実施形態と異なる部分についてのみ説明する。第1の実施形態では、最外周のゲート電極6上にゲートコンタクト孔8が形成されていたが、本実施形態では、格子状に形成されたトレンチ4の交点にゲートコンタクト孔8が形成されていることが特徴となっている。
第2の実施形態においては、トレンチ4が正方の格子状に配置されていたが、図5(a)、(b)、(c)のように、セル領域15を千鳥状に配置して、トレンチ4を1列ごとにずれている段違いのある格子状(段違い格子状)に形成してもよい。トレンチ4が格子状に形成されている場合と比べ、トレンチ4の交点におけるセル領域15間の距離は短くなるが、トレンチ4が格子状に形成されている場合と同様の効果が得られる。
2 P型ウェル領域
3 P型ボディ領域
4 トレンチ
5 ゲート絶縁膜
6 ゲート電極
7 ゲート引き出し配線
8 ゲートコンタクト孔
9 ソース領域
10 ゲート配線
11、11a、11b ソース配線
12 ドレイン電極
13 フィールド絶縁膜
14、14a、14b 層間絶縁膜
15 セル領域
16 セル外周領域
Claims (3)
- 半導体基板と、
前記半導体基板に設けられたボディ層と、
前記ボディ層の表層部の周囲にソース領域が配置された複数のセル領域と、
前記複数のセル領域を互いに分離している一定の幅を有する第1のトレンチと、
前記複数のセル領域の最外周に設けられた前記第1のトレンチより幅の広い第2のトレンチと、
前記第1および第2のトレンチの内壁を覆うゲート絶縁膜と、
前記ゲート絶縁膜で覆われた前記第1および第2のトレンチの内部を充填しているゲート電極と、
前記第2のトレンチの外側を取り囲んで設けられたセル外周領域と、
前記複数のセル領域、前記第1のトレンチおよび前記第2のトレンチの上に設けられた層間絶縁膜と、
前記第2のトレンチの上に設けられた前記層間絶縁膜に設けられたゲートコンタクト孔と、
前記ゲートコンタクト孔を介して前記ゲート電極と接続されたゲート配線と、
を有する半導体装置。 - 半導体基板と、
前記半導体基板に設けられたボディ層と、
前記ボディ層の表層部の周囲にソース領域が配置された複数のセル領域と、
前記複数のセル領域を互いに分離している一定の幅を有し、格子状に配置された第1のトレンチと、
前記複数のセル領域の最外周に設けられた第2のトレンチと、
前記第1および第2のトレンチの内壁を覆うゲート絶縁膜と、
前記ゲート絶縁膜で覆われた前記第1および第2のトレンチの内部を充填しているゲート電極と、
前記第2のトレンチの外側を取り囲んで設けられたセル外周領域と、
前記複数のセル領域、前記第1のトレンチおよび前記第2のトレンチの上に設けられた層間絶縁膜と、
前記格子状に配置された第1のトレンチの交点の上において前記層間絶縁膜に設けられたゲートコンタクト孔と、
前記ゲートコンタクト孔を介して前記ゲート電極と接続されたゲート配線と、
を有する半導体装置。 - 半導体基板と、
前記半導体基板に設けられたボディ層と、
前記ボディ層の表層部の周囲にソース領域が配置された複数のセル領域と、
前記複数のセル領域を互いに分離している一定の幅を有し、段違い格子状に配置された第1のトレンチと、
前記複数のセル領域の最外周に設けられた第2のトレンチと、
前記第1および第2のトレンチの内壁を覆うゲート絶縁膜と、
前記ゲート絶縁膜で覆われた前記第1および第2のトレンチの内部を充填しているゲート電極と、
前記第2のトレンチの外側を取り囲んで設けられたセル外周領域と、
前記複数のセル領域、前記第1のトレンチおよび前記第2のトレンチの上に設けられた層間絶縁膜と、
前記段違い格子状に配置された第1のトレンチの交点の上において前記層間絶縁膜に設けられたゲートコンタクト孔と、
前記ゲートコンタクト孔を介して前記ゲート電極と接続されたゲート配線と、
を有する半導体装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012217985A JP6077251B2 (ja) | 2012-09-28 | 2012-09-28 | 半導体装置 |
TW102132790A TWI591825B (zh) | 2012-09-28 | 2013-09-11 | 半導體裝置 |
US14/033,892 US9306062B2 (en) | 2012-09-28 | 2013-09-23 | Semiconductor device |
KR1020130114434A KR102082646B1 (ko) | 2012-09-28 | 2013-09-26 | 반도체 장치 |
CN201310449788.XA CN103715262B (zh) | 2012-09-28 | 2013-09-27 | 半导体装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012217985A JP6077251B2 (ja) | 2012-09-28 | 2012-09-28 | 半導体装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2014072412A true JP2014072412A (ja) | 2014-04-21 |
JP6077251B2 JP6077251B2 (ja) | 2017-02-08 |
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JP2012217985A Expired - Fee Related JP6077251B2 (ja) | 2012-09-28 | 2012-09-28 | 半導体装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9306062B2 (ja) |
JP (1) | JP6077251B2 (ja) |
KR (1) | KR102082646B1 (ja) |
CN (1) | CN103715262B (ja) |
TW (1) | TWI591825B (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10475916B2 (en) | 2017-03-30 | 2019-11-12 | Ablic Inc. | Semiconductor device and manufacturing method thereof |
DE102021114173A1 (de) | 2020-07-10 | 2022-01-13 | Mitsubishi Electric Corporation | Halbleitervorrichtung |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1140802A (ja) * | 1997-07-15 | 1999-02-12 | Nissan Motor Co Ltd | 半導体装置とその製造方法 |
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 |
JP2002373988A (ja) * | 2001-06-14 | 2002-12-26 | Rohm Co Ltd | 半導体装置およびその製法 |
JP2006120952A (ja) * | 2004-10-22 | 2006-05-11 | Fuji Electric Holdings Co Ltd | Mis型半導体装置 |
JP2006202837A (ja) * | 2005-01-18 | 2006-08-03 | Toshiba Corp | 電力用半導体装置およびその製造方法 |
JP2008085278A (ja) * | 2006-09-29 | 2008-04-10 | Ricoh Co Ltd | 半導体装置及びその製造方法 |
Family Cites Families (16)
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JP3502531B2 (ja) * | 1997-08-28 | 2004-03-02 | 株式会社ルネサステクノロジ | 半導体装置の製造方法 |
TW469599B (en) * | 1998-12-02 | 2001-12-21 | Infineon Technologies Ag | DRAM-cells arrangement and its production method |
JP2001102576A (ja) * | 1999-09-29 | 2001-04-13 | Sanyo Electric Co Ltd | 半導体装置 |
GB0122122D0 (en) * | 2001-09-13 | 2001-10-31 | Koninkl Philips Electronics Nv | Trench-gate semiconductor devices and their manufacture |
US6838722B2 (en) * | 2002-03-22 | 2005-01-04 | Siliconix Incorporated | Structures of and methods of fabricating trench-gated MIS devices |
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US8022472B2 (en) * | 2007-12-04 | 2011-09-20 | Rohm Co., Ltd. | Semiconductor device and method of manufacturing semiconductor device |
JP2009188294A (ja) * | 2008-02-08 | 2009-08-20 | Nec Electronics Corp | パワーmosfet |
US8067798B2 (en) * | 2008-03-31 | 2011-11-29 | Rohm Co., Ltd. | Semiconductor device |
JP5287835B2 (ja) * | 2010-04-22 | 2013-09-11 | 株式会社デンソー | 半導体装置 |
JP5630114B2 (ja) * | 2010-07-16 | 2014-11-26 | トヨタ自動車株式会社 | 炭化珪素半導体装置 |
JP5616720B2 (ja) * | 2010-08-30 | 2014-10-29 | セイコーインスツル株式会社 | 半導体装置およびその製造方法 |
JP6037499B2 (ja) * | 2011-06-08 | 2016-12-07 | ローム株式会社 | 半導体装置およびその製造方法 |
-
2012
- 2012-09-28 JP JP2012217985A patent/JP6077251B2/ja not_active Expired - Fee Related
-
2013
- 2013-09-11 TW TW102132790A patent/TWI591825B/zh not_active IP Right Cessation
- 2013-09-23 US US14/033,892 patent/US9306062B2/en not_active Expired - Fee Related
- 2013-09-26 KR KR1020130114434A patent/KR102082646B1/ko active IP Right Grant
- 2013-09-27 CN CN201310449788.XA patent/CN103715262B/zh not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1140802A (ja) * | 1997-07-15 | 1999-02-12 | Nissan Motor Co Ltd | 半導体装置とその製造方法 |
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 |
JP2002373988A (ja) * | 2001-06-14 | 2002-12-26 | Rohm Co Ltd | 半導体装置およびその製法 |
JP2006120952A (ja) * | 2004-10-22 | 2006-05-11 | Fuji Electric Holdings Co Ltd | Mis型半導体装置 |
JP2006202837A (ja) * | 2005-01-18 | 2006-08-03 | Toshiba Corp | 電力用半導体装置およびその製造方法 |
JP2008085278A (ja) * | 2006-09-29 | 2008-04-10 | Ricoh Co Ltd | 半導体装置及びその製造方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10475916B2 (en) | 2017-03-30 | 2019-11-12 | Ablic Inc. | Semiconductor device and manufacturing method thereof |
DE102021114173A1 (de) | 2020-07-10 | 2022-01-13 | Mitsubishi Electric Corporation | Halbleitervorrichtung |
US11552002B2 (en) | 2020-07-10 | 2023-01-10 | Mitsubishi Electric Corporation | Semiconductor device |
Also Published As
Publication number | Publication date |
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US20140091387A1 (en) | 2014-04-03 |
US9306062B2 (en) | 2016-04-05 |
KR20140042707A (ko) | 2014-04-07 |
CN103715262A (zh) | 2014-04-09 |
JP6077251B2 (ja) | 2017-02-08 |
CN103715262B (zh) | 2017-12-26 |
KR102082646B1 (ko) | 2020-02-28 |
TW201428969A (zh) | 2014-07-16 |
TWI591825B (zh) | 2017-07-11 |
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