CN105655402A - 低压超结mosfet终端结构及其制造方法 - Google Patents
低压超结mosfet终端结构及其制造方法 Download PDFInfo
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- CN105655402A CN105655402A CN201610196091.XA CN201610196091A CN105655402A CN 105655402 A CN105655402 A CN 105655402A CN 201610196091 A CN201610196091 A CN 201610196091A CN 105655402 A CN105655402 A CN 105655402A
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- 238000000034 method Methods 0.000 title claims abstract description 57
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000004065 semiconductor Substances 0.000 title abstract description 5
- 230000005669 field effect Effects 0.000 title abstract 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims abstract description 10
- 229920005591 polysilicon Polymers 0.000 claims description 27
- 238000005260 corrosion Methods 0.000 claims description 18
- 230000007797 corrosion Effects 0.000 claims description 18
- 238000001259 photo etching Methods 0.000 claims description 10
- 230000003647 oxidation Effects 0.000 claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims description 9
- 238000005530 etching Methods 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 230000008021 deposition Effects 0.000 claims description 6
- 238000001312 dry etching Methods 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 239000000758 substrate Substances 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 claims description 4
- 238000005137 deposition process Methods 0.000 claims description 3
- 229920002120 photoresistant polymer Polymers 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 238000001039 wet etching Methods 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 230000000873 masking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011982 device technology Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
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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
- 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
- H01L29/7811—Vertical DMOS transistors, i.e. VDMOS transistors with an edge termination structure
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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
- H01L29/66007—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
- H01L29/7813—Vertical DMOS transistors, i.e. VDMOS transistors with trench gate electrode, e.g. UMOS transistors
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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)
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Abstract
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201610196091.XA CN105655402B (zh) | 2016-03-31 | 2016-03-31 | 低压超结mosfet终端结构及其制造方法 |
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CN201610196091.XA CN105655402B (zh) | 2016-03-31 | 2016-03-31 | 低压超结mosfet终端结构及其制造方法 |
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CN105655402A true CN105655402A (zh) | 2016-06-08 |
CN105655402B CN105655402B (zh) | 2019-11-19 |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106206322A (zh) * | 2016-08-30 | 2016-12-07 | 西安龙腾新能源科技发展有限公司 | 自对准低压超结mofet的制造方法 |
CN106898555A (zh) * | 2017-03-21 | 2017-06-27 | 西安龙腾新能源科技发展有限公司 | 具有软反向恢复特性的sj‑mos结构及其制造方法 |
CN108091573A (zh) * | 2017-12-20 | 2018-05-29 | 西安龙腾新能源科技发展有限公司 | 屏蔽栅沟槽mosfet esd结构及其制造方法 |
CN111146271A (zh) * | 2019-12-20 | 2020-05-12 | 北京时代民芯科技有限公司 | 一种带有终端结构的超结mosfet结构及制备方法 |
CN113471279A (zh) * | 2021-06-29 | 2021-10-01 | 无锡新洁能股份有限公司 | 降低导通电阻的功率晶体管结构及制造方法 |
CN113782613A (zh) * | 2021-09-29 | 2021-12-10 | 捷捷微电(无锡)科技有限公司 | 一种新型分离栅mosfet器件 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102208414A (zh) * | 2010-03-31 | 2011-10-05 | 力士科技股份有限公司 | 一种超结沟槽金属氧化物半导体场效应管及其制造方法 |
CN102280487A (zh) * | 2011-08-22 | 2011-12-14 | 无锡新洁能功率半导体有限公司 | 一种新型沟槽结构的功率mosfet器件及其制造方法 |
CN103824883A (zh) * | 2012-11-19 | 2014-05-28 | 比亚迪股份有限公司 | 一种具有终端耐压结构的沟槽mosfet的及其制造方法 |
CN104241386A (zh) * | 2014-09-25 | 2014-12-24 | 无锡新洁能股份有限公司 | 具有低特征导通电阻的功率mosfet器件及其制造方法 |
CN205488142U (zh) * | 2016-03-31 | 2016-08-17 | 西安龙腾新能源科技发展有限公司 | 一种低压超结mosfet终端结构 |
-
2016
- 2016-03-31 CN CN201610196091.XA patent/CN105655402B/zh active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102208414A (zh) * | 2010-03-31 | 2011-10-05 | 力士科技股份有限公司 | 一种超结沟槽金属氧化物半导体场效应管及其制造方法 |
CN102280487A (zh) * | 2011-08-22 | 2011-12-14 | 无锡新洁能功率半导体有限公司 | 一种新型沟槽结构的功率mosfet器件及其制造方法 |
CN103824883A (zh) * | 2012-11-19 | 2014-05-28 | 比亚迪股份有限公司 | 一种具有终端耐压结构的沟槽mosfet的及其制造方法 |
CN104241386A (zh) * | 2014-09-25 | 2014-12-24 | 无锡新洁能股份有限公司 | 具有低特征导通电阻的功率mosfet器件及其制造方法 |
CN205488142U (zh) * | 2016-03-31 | 2016-08-17 | 西安龙腾新能源科技发展有限公司 | 一种低压超结mosfet终端结构 |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106206322A (zh) * | 2016-08-30 | 2016-12-07 | 西安龙腾新能源科技发展有限公司 | 自对准低压超结mofet的制造方法 |
CN106206322B (zh) * | 2016-08-30 | 2019-06-21 | 西安龙腾新能源科技发展有限公司 | 自对准低压超结mosfet的制造方法 |
CN106898555A (zh) * | 2017-03-21 | 2017-06-27 | 西安龙腾新能源科技发展有限公司 | 具有软反向恢复特性的sj‑mos结构及其制造方法 |
CN108091573A (zh) * | 2017-12-20 | 2018-05-29 | 西安龙腾新能源科技发展有限公司 | 屏蔽栅沟槽mosfet esd结构及其制造方法 |
CN111146271A (zh) * | 2019-12-20 | 2020-05-12 | 北京时代民芯科技有限公司 | 一种带有终端结构的超结mosfet结构及制备方法 |
CN113471279A (zh) * | 2021-06-29 | 2021-10-01 | 无锡新洁能股份有限公司 | 降低导通电阻的功率晶体管结构及制造方法 |
CN113471279B (zh) * | 2021-06-29 | 2022-06-28 | 无锡新洁能股份有限公司 | 降低导通电阻的功率晶体管结构 |
CN113782613A (zh) * | 2021-09-29 | 2021-12-10 | 捷捷微电(无锡)科技有限公司 | 一种新型分离栅mosfet器件 |
CN113782613B (zh) * | 2021-09-29 | 2024-08-02 | 捷捷微电(南通)科技有限公司 | 一种分离栅mosfet器件 |
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CN105655402B (zh) | 2019-11-19 |
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Address after: 710021 export processing zone, No. twelve, 1 road, Fengcheng, Shaanxi, Xi'an Patentee after: Longteng Semiconductor Co.,Ltd. Address before: 710021 export processing zone, No. twelve, 1 road, Fengcheng, Shaanxi, Xi'an Patentee before: LONTEN SEMICONDUCTOR Co.,Ltd. Address after: 710021 export processing zone, No. twelve, 1 road, Fengcheng, Shaanxi, Xi'an Patentee after: LONTEN SEMICONDUCTOR Co.,Ltd. Address before: 710021 export processing zone, No. twelve, 1 road, Fengcheng, Shaanxi, Xi'an Patentee before: XI'AN LONTEN RENEWABLE ENERGY TECHNOLOGY Inc. |