CN111129152B - 沟槽mosfet结构及其制造方法 - Google Patents
沟槽mosfet结构及其制造方法 Download PDFInfo
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- CN111129152B CN111129152B CN201911301611.9A CN201911301611A CN111129152B CN 111129152 B CN111129152 B CN 111129152B CN 201911301611 A CN201911301611 A CN 201911301611A CN 111129152 B CN111129152 B CN 111129152B
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Classifications
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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
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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- H01L29/772—Field effect transistors
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- H01L29/7802—Vertical DMOS transistors, i.e. VDMOS transistors
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
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- 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
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- H01L29/41725—Source or drain electrodes for field effect devices
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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
- H01L29/7841—Field effect transistors with field effect produced by an insulated gate with floating body, e.g. programmable transistors
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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
- H01L29/417—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
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- 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)
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
Description
Claims (13)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911301611.9A CN111129152B (zh) | 2019-12-17 | 2019-12-17 | 沟槽mosfet结构及其制造方法 |
US17/113,305 US20210184009A1 (en) | 2019-12-17 | 2020-12-07 | Trench mosfet and method for manufacturing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201911301611.9A CN111129152B (zh) | 2019-12-17 | 2019-12-17 | 沟槽mosfet结构及其制造方法 |
Publications (2)
Publication Number | Publication Date |
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CN111129152A CN111129152A (zh) | 2020-05-08 |
CN111129152B true CN111129152B (zh) | 2023-09-26 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201911301611.9A Active CN111129152B (zh) | 2019-12-17 | 2019-12-17 | 沟槽mosfet结构及其制造方法 |
Country Status (2)
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US (1) | US20210184009A1 (zh) |
CN (1) | CN111129152B (zh) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11355630B2 (en) * | 2020-09-11 | 2022-06-07 | Wolfspeed, Inc. | Trench bottom shielding methods and approaches for trenched semiconductor device structures |
CN114023812B (zh) * | 2021-10-20 | 2023-08-22 | 上海华虹宏力半导体制造有限公司 | 屏蔽栅沟槽型mosfet器件及其制作方法 |
CN114420565A (zh) * | 2022-03-28 | 2022-04-29 | 深圳市美浦森半导体有限公司 | 增强型分离栅沟槽mos器件及其制造方法 |
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CN107170801A (zh) * | 2017-06-08 | 2017-09-15 | 电子科技大学 | 一种提高雪崩耐量的屏蔽栅vdmos器件 |
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CN109148587A (zh) * | 2018-08-23 | 2019-01-04 | 电子科技大学 | 具有低比导通电阻的分离栅vdmos器件及其制造方法 |
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WO2021157529A1 (ja) * | 2020-02-07 | 2021-08-12 | ローム株式会社 | 半導体装置 |
US20210384346A1 (en) * | 2020-06-03 | 2021-12-09 | Nami MOS CO., LTD. | Shielded gate trench mosfet having super junction surrounding lower portion of trenched gates |
JP7392612B2 (ja) * | 2020-08-26 | 2023-12-06 | 株式会社デンソー | 半導体装置 |
CN112582260B (zh) * | 2020-12-04 | 2023-08-22 | 杭州芯迈半导体技术有限公司 | 沟槽型mosfet及其制造方法 |
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CN114678275A (zh) * | 2021-12-29 | 2022-06-28 | 杭州芯迈半导体技术有限公司 | 分离栅mosfet及其制造方法 |
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- 2019-12-17 CN CN201911301611.9A patent/CN111129152B/zh active Active
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US20180358433A1 (en) * | 2017-06-12 | 2018-12-13 | Alpha And Omega Semiconductor (Cayman) Ltd. | Method of manufacturing lv/mv super junction trench power mosfets |
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