CN107658342A - 非对称的屏蔽栅mosfet结构及其制备方法 - Google Patents
非对称的屏蔽栅mosfet结构及其制备方法 Download PDFInfo
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- CN107658342A CN107658342A CN201710997761.2A CN201710997761A CN107658342A CN 107658342 A CN107658342 A CN 107658342A CN 201710997761 A CN201710997761 A CN 201710997761A CN 107658342 A CN107658342 A CN 107658342A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 230000001413 cellular effect Effects 0.000 claims abstract description 225
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 128
- 229920005591 polysilicon Polymers 0.000 claims description 123
- 239000010410 layer Substances 0.000 claims description 109
- 239000002184 metal Substances 0.000 claims description 38
- 229910052751 metal Inorganic materials 0.000 claims description 38
- 239000000758 substrate Substances 0.000 claims description 36
- 238000005530 etching Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 15
- 239000004065 semiconductor Substances 0.000 claims description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- 239000010703 silicon Substances 0.000 claims description 10
- 239000012535 impurity Substances 0.000 claims description 7
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 239000011229 interlayer Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 239000013078 crystal Substances 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 230000003071 parasitic effect Effects 0.000 abstract description 3
- 230000015556 catabolic process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 238000005090 crystal field Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000126 substance 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
- H01L29/40—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 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
- H01L29/66409—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
Abstract
Description
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201710997761.2A CN107658342B (zh) | 2017-10-24 | 2017-10-24 | 非对称的屏蔽栅mosfet结构及其制备方法 |
Applications Claiming Priority (1)
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CN201710997761.2A CN107658342B (zh) | 2017-10-24 | 2017-10-24 | 非对称的屏蔽栅mosfet结构及其制备方法 |
Publications (2)
Publication Number | Publication Date |
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CN107658342A true CN107658342A (zh) | 2018-02-02 |
CN107658342B CN107658342B (zh) | 2020-06-30 |
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CN201710997761.2A Active CN107658342B (zh) | 2017-10-24 | 2017-10-24 | 非对称的屏蔽栅mosfet结构及其制备方法 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10125268C1 (de) * | 2001-05-23 | 2002-08-29 | Infineon Technologies Ag | Vertikaler MOS-Transistor mit einer Druchbruchstruktur und Verfahren zu dessen Herstellung |
US6768168B1 (en) * | 1995-03-14 | 2004-07-27 | Mitsubishi Denki Kabushiki Kaisha | Insulated gate semiconductor device with low on voltage and manufacturing method thereof |
CN1967868A (zh) * | 2005-11-14 | 2007-05-23 | 三菱电机株式会社 | 半导体装置及其制造方法 |
CN101375400A (zh) * | 2006-02-17 | 2009-02-25 | 万国半导体股份有限公司 | 保护栅极沟槽式金属氧化物半导体场效应晶体管组件及其制造方法 |
CN104022043A (zh) * | 2014-06-16 | 2014-09-03 | 中航(重庆)微电子有限公司 | 带有分裂栅的沟槽式功率mosfet及制备方法 |
-
2017
- 2017-10-24 CN CN201710997761.2A patent/CN107658342B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6768168B1 (en) * | 1995-03-14 | 2004-07-27 | Mitsubishi Denki Kabushiki Kaisha | Insulated gate semiconductor device with low on voltage and manufacturing method thereof |
DE10125268C1 (de) * | 2001-05-23 | 2002-08-29 | Infineon Technologies Ag | Vertikaler MOS-Transistor mit einer Druchbruchstruktur und Verfahren zu dessen Herstellung |
CN1967868A (zh) * | 2005-11-14 | 2007-05-23 | 三菱电机株式会社 | 半导体装置及其制造方法 |
CN101375400A (zh) * | 2006-02-17 | 2009-02-25 | 万国半导体股份有限公司 | 保护栅极沟槽式金属氧化物半导体场效应晶体管组件及其制造方法 |
CN104022043A (zh) * | 2014-06-16 | 2014-09-03 | 中航(重庆)微电子有限公司 | 带有分裂栅的沟槽式功率mosfet及制备方法 |
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CN107658342B (zh) | 2020-06-30 |
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Effective date of registration: 20200429 Address after: 550081 Guizhou city of Guiyang Province Lake District Forest City West Morgan center A block 10 layer A-10-003 Applicant after: GUIZHOU MARCHING POWER TECHNOLOGY CO.,LTD. Applicant after: Nanjing Xinchangzheng Technology Co.,Ltd. Address before: 550081 Guizhou city of Guiyang Province Lake District Forest City West Morgan center A block 10 layer A-10-003 Applicant before: GUIZHOU MARCHING POWER TECHNOLOGY Co.,Ltd. |
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Address after: 210000 room 1106-3, No. 62, Suyuan Avenue, Jiangning Development Zone, Nanjing, Jiangsu Province (Jiangning Development Zone) Patentee after: Jiangsu xinchangzheng microelectronics Group Co.,Ltd. Patentee after: Nanjing Xinchangzheng Technology Co.,Ltd. Address before: 550081 A-10-003, 10th floor, Morgan Center, Lincheng West Road, Guanshan Lake District, Guiyang City, Guizhou Province Patentee before: GUIZHOU MARCHING POWER TECHNOLOGY CO.,LTD. Patentee before: Nanjing Xinchangzheng Technology Co.,Ltd. |
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Address after: 210000 room 1106-3, No. 62, Suyuan Avenue, Jiangning Development Zone, Nanjing, Jiangsu Province (Jiangning Development Zone) Patentee after: Jiangsu Chip Long March Microelectronics Group Co.,Ltd. Patentee after: Nanjing Xinchangzheng Technology Co.,Ltd. Address before: 210000 room 1106-3, No. 62, Suyuan Avenue, Jiangning Development Zone, Nanjing, Jiangsu Province (Jiangning Development Zone) Patentee before: Jiangsu xinchangzheng microelectronics Group Co.,Ltd. Patentee before: Nanjing Xinchangzheng Technology Co.,Ltd. |