CN103715253B - 化合物半导体器件和其制造方法 - Google Patents
化合物半导体器件和其制造方法 Download PDFInfo
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- CN103715253B CN103715253B CN201310459388.7A CN201310459388A CN103715253B CN 103715253 B CN103715253 B CN 103715253B CN 201310459388 A CN201310459388 A CN 201310459388A CN 103715253 B CN103715253 B CN 103715253B
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 110
- 150000001875 compounds Chemical class 0.000 title claims abstract description 85
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 claims description 55
- 230000027756 respiratory electron transport chain Effects 0.000 claims description 19
- 239000010410 layer Substances 0.000 description 92
- 229910002704 AlGaN Inorganic materials 0.000 description 63
- 238000005530 etching Methods 0.000 description 56
- 239000007789 gas Substances 0.000 description 46
- 230000015572 biosynthetic process Effects 0.000 description 32
- 239000011435 rock Substances 0.000 description 26
- 239000000758 substrate Substances 0.000 description 24
- 238000000151 deposition Methods 0.000 description 17
- 238000001312 dry etching Methods 0.000 description 17
- 230000000694 effects Effects 0.000 description 17
- 230000000052 comparative effect Effects 0.000 description 16
- 230000005684 electric field Effects 0.000 description 14
- 230000005611 electricity Effects 0.000 description 14
- 239000007772 electrode material Substances 0.000 description 14
- 150000004767 nitrides Chemical class 0.000 description 12
- 239000000126 substance Substances 0.000 description 12
- 239000000243 solution Substances 0.000 description 11
- 238000004380 ashing Methods 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 9
- 239000001301 oxygen Substances 0.000 description 9
- 229910052760 oxygen Inorganic materials 0.000 description 9
- 238000000926 separation method Methods 0.000 description 8
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 8
- XCZXGTMEAKBVPV-UHFFFAOYSA-N trimethylgallium Chemical compound C[Ga](C)C XCZXGTMEAKBVPV-UHFFFAOYSA-N 0.000 description 8
- 239000000460 chlorine Substances 0.000 description 7
- 230000008021 deposition Effects 0.000 description 7
- 238000002955 isolation Methods 0.000 description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 6
- 229910052801 chlorine Inorganic materials 0.000 description 6
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 229910052593 corundum Inorganic materials 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 4
- 230000010287 polarization Effects 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 238000004544 sputter deposition Methods 0.000 description 4
- 230000005533 two-dimensional electron gas Effects 0.000 description 4
- 229910001845 yogo sapphire Inorganic materials 0.000 description 4
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000011229 interlayer Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000001451 molecular beam epitaxy Methods 0.000 description 3
- 238000001259 photo etching Methods 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 238000000407 epitaxy Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 229910052715 tantalum Inorganic materials 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- -1 Cl2.Therefore Chemical compound 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000000927 vapour-phase epitaxy Methods 0.000 description 1
Classifications
-
- 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
- H01L29/417—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
-
- 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
- H01L29/778—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface
-
- 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
-
- 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
- H01L29/66431—Unipolar field-effect transistors with a heterojunction interface channel or gate, e.g. HFET, HIGFET, SISFET, HJFET, HEMT
-
- 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
- H01L29/66446—Unipolar field-effect transistors with an active layer made of a group 13/15 material, e.g. group 13/15 velocity modulation transistor [VMT], group 13/15 negative resistance FET [NERFET]
- H01L29/66462—Unipolar field-effect transistors with an active layer made of a group 13/15 material, e.g. group 13/15 velocity modulation transistor [VMT], group 13/15 negative resistance FET [NERFET] with a heterojunction interface channel or gate, e.g. HFET, HIGFET, SISFET, HJFET, HEMT
-
- 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
- H01L29/778—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface
- H01L29/7786—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface with direct single heterostructure, i.e. with wide bandgap layer formed on top of active layer, e.g. direct single heterostructure MIS-like HEMT
- H01L29/7787—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface with direct single heterostructure, i.e. with wide bandgap layer formed on top of active layer, e.g. direct single heterostructure MIS-like HEMT with wide bandgap charge-carrier supplying layer, e.g. direct single heterostructure MODFET
-
- 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
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/20—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
- H01L29/2003—Nitride compounds
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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)
- Junction Field-Effect Transistors (AREA)
- Electrodes Of Semiconductors (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
Description
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012-217346 | 2012-09-28 | ||
JP2012217346A JP2014072377A (ja) | 2012-09-28 | 2012-09-28 | 化合物半導体装置及びその製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103715253A CN103715253A (zh) | 2014-04-09 |
CN103715253B true CN103715253B (zh) | 2017-01-11 |
Family
ID=50384351
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201310459388.7A Active CN103715253B (zh) | 2012-09-28 | 2013-09-26 | 化合物半导体器件和其制造方法 |
Country Status (4)
Country | Link |
---|---|
US (1) | US9142658B2 (zh) |
JP (1) | JP2014072377A (zh) |
CN (1) | CN103715253B (zh) |
TW (1) | TWI512974B (zh) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6054620B2 (ja) * | 2012-03-29 | 2016-12-27 | トランスフォーム・ジャパン株式会社 | 化合物半導体装置及びその製造方法 |
US9443737B2 (en) * | 2013-04-03 | 2016-09-13 | Texas Instruments Incorporated | Method of forming metal contacts in the barrier layer of a group III-N HEMT |
JP6198039B2 (ja) * | 2013-04-12 | 2017-09-20 | 住友電工デバイス・イノベーション株式会社 | 半導体装置 |
JP6530210B2 (ja) | 2015-03-24 | 2019-06-12 | 株式会社東芝 | 半導体装置及びその製造方法 |
TWI653683B (zh) | 2017-10-30 | 2019-03-11 | 世界先進積體電路股份有限公司 | 半導體結構和高電子遷移率電晶體的製造方法 |
US10630285B1 (en) | 2017-11-21 | 2020-04-21 | Transphorm Technology, Inc. | Switching circuits having drain connected ferrite beads |
US11121229B2 (en) | 2017-12-28 | 2021-09-14 | Vanguard International Semiconductor Corporation | Methods of fabricating semiconductor structures and high electron mobility transistors |
US10756207B2 (en) | 2018-10-12 | 2020-08-25 | Transphorm Technology, Inc. | Lateral III-nitride devices including a vertical gate module |
WO2020191357A1 (en) | 2019-03-21 | 2020-09-24 | Transphorm Technology, Inc. | Integrated design for iii-nitride devices |
US11749656B2 (en) | 2020-06-16 | 2023-09-05 | Transphorm Technology, Inc. | Module configurations for integrated III-Nitride devices |
US20230299190A1 (en) | 2020-08-05 | 2023-09-21 | Transphorm Technology, Inc. | Iii-nitride devices including a depleting layer |
CN114520263A (zh) * | 2020-11-19 | 2022-05-20 | 联华电子股份有限公司 | 半导体装置及半导体装置的制作方法 |
US11646351B2 (en) | 2021-01-12 | 2023-05-09 | Globalfoundries U.S. Inc. | Transistor with multi-level self-aligned gate and source/drain terminals and methods |
Citations (2)
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CN101162695A (zh) * | 2006-10-09 | 2008-04-16 | 西安能讯微电子有限公司 | 氮化镓hemt器件表面钝化及提高器件击穿电压的工艺 |
CN101312207A (zh) * | 2007-05-21 | 2008-11-26 | 张乃千 | 一种增强型氮化镓hemt器件结构 |
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JP4077731B2 (ja) * | 2003-01-27 | 2008-04-23 | 富士通株式会社 | 化合物半導体装置およびその製造方法 |
JP2005129696A (ja) * | 2003-10-23 | 2005-05-19 | Matsushita Electric Ind Co Ltd | 半導体装置及びその製造方法 |
JP4712459B2 (ja) * | 2005-07-08 | 2011-06-29 | パナソニック株式会社 | トランジスタ及びその動作方法 |
JP4333652B2 (ja) * | 2005-08-17 | 2009-09-16 | 沖電気工業株式会社 | オーミック電極、オーミック電極の製造方法、電界効果型トランジスタ、電界効果型トランジスタの製造方法、および、半導体装置 |
JP4755961B2 (ja) * | 2006-09-29 | 2011-08-24 | パナソニック株式会社 | 窒化物半導体装置及びその製造方法 |
JP2008258299A (ja) * | 2007-04-03 | 2008-10-23 | Sumitomo Chemical Co Ltd | 電界効果トランジスタ |
US7859021B2 (en) * | 2007-08-29 | 2010-12-28 | Sanken Electric Co., Ltd. | Field-effect semiconductor device |
US8519438B2 (en) * | 2008-04-23 | 2013-08-27 | Transphorm Inc. | Enhancement mode III-N HEMTs |
WO2010074275A1 (ja) * | 2008-12-26 | 2010-07-01 | 日本電気株式会社 | ヘテロ接合電界効果トランジスタ、ヘテロ接合電界トランジスタの製造方法、および電子装置 |
WO2010082272A1 (ja) * | 2009-01-16 | 2010-07-22 | 日本電気株式会社 | 半導体装置及びその製造方法 |
JP5487631B2 (ja) * | 2009-02-04 | 2014-05-07 | 富士通株式会社 | 化合物半導体装置及びその製造方法 |
JP2010225765A (ja) * | 2009-03-23 | 2010-10-07 | Panasonic Corp | 半導体装置及びその製造方法 |
JP5625314B2 (ja) * | 2009-10-22 | 2014-11-19 | サンケン電気株式会社 | 半導体装置 |
CN103026491B (zh) * | 2010-07-06 | 2016-03-02 | 香港科技大学 | 常关断型三族氮化物金属-二维电子气隧穿结场效应晶体管 |
JP5596495B2 (ja) * | 2010-10-29 | 2014-09-24 | パナソニック株式会社 | 半導体装置 |
JP2012134345A (ja) | 2010-12-22 | 2012-07-12 | Toshiba Corp | 半導体装置及びその製造方法 |
US8507920B2 (en) * | 2011-07-11 | 2013-08-13 | Taiwan Semiconductor Manufacturing Company, Ltd. | Semiconductor structure and method of forming the same |
JP5903642B2 (ja) * | 2011-08-08 | 2016-04-13 | パナソニックIpマネジメント株式会社 | 半導体装置 |
US8697505B2 (en) * | 2011-09-15 | 2014-04-15 | Taiwan Semiconductor Manufacturing Company, Ltd. | Method of forming a semiconductor structure |
US8928037B2 (en) * | 2013-02-28 | 2015-01-06 | Power Integrations, Inc. | Heterostructure power transistor with AlSiN passivation layer |
-
2012
- 2012-09-28 JP JP2012217346A patent/JP2014072377A/ja active Pending
-
2013
- 2013-09-10 TW TW102132549A patent/TWI512974B/zh active
- 2013-09-20 US US14/032,493 patent/US9142658B2/en active Active
- 2013-09-26 CN CN201310459388.7A patent/CN103715253B/zh active Active
Patent Citations (2)
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CN101162695A (zh) * | 2006-10-09 | 2008-04-16 | 西安能讯微电子有限公司 | 氮化镓hemt器件表面钝化及提高器件击穿电压的工艺 |
CN101312207A (zh) * | 2007-05-21 | 2008-11-26 | 张乃千 | 一种增强型氮化镓hemt器件结构 |
Also Published As
Publication number | Publication date |
---|---|
US20140091365A1 (en) | 2014-04-03 |
TWI512974B (zh) | 2015-12-11 |
TW201417281A (zh) | 2014-05-01 |
JP2014072377A (ja) | 2014-04-21 |
CN103715253A (zh) | 2014-04-09 |
US9142658B2 (en) | 2015-09-22 |
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