JP4906281B2 - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP4906281B2 JP4906281B2 JP2005191023A JP2005191023A JP4906281B2 JP 4906281 B2 JP4906281 B2 JP 4906281B2 JP 2005191023 A JP2005191023 A JP 2005191023A JP 2005191023 A JP2005191023 A JP 2005191023A JP 4906281 B2 JP4906281 B2 JP 4906281B2
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- 239000004065 semiconductor Substances 0.000 title claims description 64
- 238000002955 isolation Methods 0.000 claims description 102
- 238000000926 separation method Methods 0.000 claims description 44
- 230000015572 biosynthetic process Effects 0.000 claims description 27
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 6
- 229920005591 polysilicon Polymers 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 description 49
- 230000000694 effects Effects 0.000 description 29
- 230000005684 electric field Effects 0.000 description 28
- 230000015556 catabolic process Effects 0.000 description 23
- 239000000758 substrate Substances 0.000 description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 229910052814 silicon oxide Inorganic materials 0.000 description 11
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- WPPDFTBPZNZZRP-UHFFFAOYSA-N aluminum copper Chemical compound [Al].[Cu] WPPDFTBPZNZZRP-UHFFFAOYSA-N 0.000 description 2
- -1 aluminum silicon copper Chemical compound 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 230000012447 hatching Effects 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000005360 phosphosilicate glass Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- WNUPENMBHHEARK-UHFFFAOYSA-N silicon tungsten Chemical compound [Si].[W] WNUPENMBHHEARK-UHFFFAOYSA-N 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
- H01L29/66—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
- H01L29/7816—Lateral DMOS transistors, i.e. LDMOS 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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/402—Field plates
-
- 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
- H01L29/402—Field plates
- H01L29/404—Multiple field plate structures
-
- 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
- H01L29/06—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
- H01L29/0684—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 characterised by the shape, relative sizes or dispositions of the semiconductor regions or junctions between the regions
- H01L29/0692—Surface layout
- H01L29/0696—Surface layout of cellular field-effect devices, e.g. multicellular DMOS transistors or IGBTs
-
- 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
- H01L29/06—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
- 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
- H01L29/0843—Source or drain regions of field-effect devices
- H01L29/0847—Source or drain regions of field-effect devices of field-effect transistors with insulated gate
- H01L29/0852—Source or drain regions of field-effect devices of field-effect transistors with insulated gate of DMOS transistors
- H01L29/0873—Drain regions
- H01L29/0878—Impurity concentration or distribution
-
- 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
- H01L29/40—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
- H01L29/42364—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the insulating layer, e.g. thickness or uniformity
- H01L29/42368—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the insulating layer, e.g. thickness or uniformity the thickness being non-uniform
-
- 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
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/45—Ohmic electrodes
- H01L29/456—Ohmic electrodes on silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Landscapes
- Microelectronics & Electronic Packaging (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Computer Hardware Design (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Electrodes Of Semiconductors (AREA)
- Element Separation (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Description
3 N型のエピタキシャル層
4 分離領域
6 N型の拡散層
16 ドレイン電極
18 配線層
24 導電プレート
25 導電プレート
31 Nチャネル型LDMOSFET
32 配線層
33 導電プレート
34 導電プレート
35 シリコン酸化膜
Claims (8)
- 半導体層を複数の素子形成領域へと区画する分離領域と、
前記半導体層上面に形成された絶縁層と、
前記分離領域上面を交差し、前記絶縁層上面に一方の前記素子形成領域から他方の前記素子形成領域へと配線された配線層とを有し、
前記配線層下方の前記絶縁層には、前記分離領域と前記半導体層との接合領域上方を覆うように配置され、前記分離領域と電気的に接続した第1の導電プレートと、
前記第1の導電プレートと前記配線層との間にフローティング状態で配置され、少なくとも一部の領域が、前記第1の導電プレート及び前記配線層のそれぞれと対向するように形成された第2の導電プレートとを有することを特徴とする半導体装置。 - 前記第2の導電プレートは前記配線層の下方を前記分離領域から離間する方向に延在し、且つ前記第2の導電プレートの一端は前記第1の導電プレートの一端よりも前記分離領域から離間していることを特徴とする請求項1に記載の半導体装置。
- 前記第2の導電プレートは、前記配線層に印加される電位の0.3〜0.6倍の電位となることを特徴とする請求項1または請求項2に記載の半導体装置。
- 前記第1の導電プレートは、ポリシリコン膜からなることを特徴とする請求項1または請求項2に記載の半導体装置。
- 前記分離領域よりも高電位が印加される前記配線層の下方に、前記第1及び前記第2の導電プレートが形成されていることを特徴とする請求項1または請求項2に記載の半導体装置。
- 半導体層を複数の素子形成領域へと区画する分離領域と、
前記半導体層上面に形成された絶縁層と、
前記分離領域上面を交差し、前記絶縁層上面に一方の前記素子形成領域から他方の前記素子形成領域へと配線された配線層とを有し、
前記配線層下方の前記絶縁層には、前記分離領域と前記半導体層との接合領域上方を覆うようにフローティング状態で配置された第1の導電プレートと、
前記第1の導電プレートと前記配線層との間にフローティング状態で配置され、少なくとも一部の領域が、前記第1の導電プレート及び前記配線層のそれぞれと交差するように形成された第2の導電プレートとを有することを特徴とする半導体装置。 - 前記第1の導電プレートは、前記分離領域の電位よりも高く、前記第2の導電プレートの電位よりも低い電位になることを特徴とする請求項6に記載の半導体装置。
- 半導体層に形成された分離領域と、
前記半導体層に前記分離領域により囲まれて形成された複数の半導体素子と、
前記半導体層上に絶縁処理されて形成され、一方の前記半導体素子から前記分離領域を通過し他方の前記半導体素子へと延在する所望の電位に固定された配線層と、
前記配線層の下層に絶縁処理されて重畳配置され、前記分離領域と電気的に接続した第1の導電プレートと、
前記第1の導電プレートと前記配線層とその間で絶縁処理されて重畳配置された第2の導電プレートとを有し、
少なくとも前記配線層と前記第2の導電プレートとの重畳面積または前記第2の導電プレートと前記第1の導電プレートとの重畳面積を変える事により、前記第2の導電プレートの電位を調整することを特徴とする半導体装置
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005191023A JP4906281B2 (ja) | 2005-03-30 | 2005-06-30 | 半導体装置 |
US11/391,166 US7999333B2 (en) | 2005-03-30 | 2006-03-27 | Semiconductor device |
Applications Claiming Priority (3)
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JP2005098966 | 2005-03-30 | ||
JP2005098966 | 2005-03-30 | ||
JP2005191023A JP4906281B2 (ja) | 2005-03-30 | 2005-06-30 | 半導体装置 |
Publications (2)
Publication Number | Publication Date |
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JP2006310719A JP2006310719A (ja) | 2006-11-09 |
JP4906281B2 true JP4906281B2 (ja) | 2012-03-28 |
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JP2005191023A Active JP4906281B2 (ja) | 2005-03-30 | 2005-06-30 | 半導体装置 |
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JP (1) | JP4906281B2 (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5108250B2 (ja) * | 2006-04-24 | 2012-12-26 | オンセミコンダクター・トレーディング・リミテッド | 半導体装置及びその製造方法 |
JP4241856B2 (ja) * | 2006-06-29 | 2009-03-18 | 三洋電機株式会社 | 半導体装置および半導体装置の製造方法 |
JP5057850B2 (ja) * | 2007-06-04 | 2012-10-24 | 東芝メモリシステムズ株式会社 | 半導体装置 |
JP5385679B2 (ja) * | 2008-05-16 | 2014-01-08 | 旭化成エレクトロニクス株式会社 | 横方向半導体デバイスおよびその製造方法 |
JP2010118622A (ja) * | 2008-11-14 | 2010-05-27 | Panasonic Corp | 半導体装置及びその製造方法 |
JP5172654B2 (ja) * | 2008-12-27 | 2013-03-27 | 株式会社東芝 | 半導体装置 |
JP5525736B2 (ja) * | 2009-02-18 | 2014-06-18 | セミコンダクター・コンポーネンツ・インダストリーズ・リミテッド・ライアビリティ・カンパニー | 半導体装置及びその製造方法 |
JP5594515B2 (ja) * | 2010-03-26 | 2014-09-24 | 日本電気株式会社 | 半導体装置、電子装置、半導体装置の製造方法、および半導体装置の動作方法 |
US9818742B2 (en) * | 2012-05-11 | 2017-11-14 | Polar Semiconductor, Llc | Semiconductor device isolation using an aligned diffusion and polysilicon field plate |
JP6234715B2 (ja) * | 2013-06-26 | 2017-11-22 | ローム株式会社 | 半導体装置 |
US9915686B2 (en) * | 2014-12-29 | 2018-03-13 | Eaton Corporation | Voltage sensor housing and assembly including the same |
TWI629785B (zh) * | 2016-12-29 | 2018-07-11 | 新唐科技股份有限公司 | 高電壓積體電路的高電壓終端結構 |
JP6414861B2 (ja) * | 2017-09-12 | 2018-10-31 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
JP6533266B2 (ja) * | 2017-10-23 | 2019-06-19 | ローム株式会社 | 半導体装置 |
CN115280514A (zh) * | 2020-03-13 | 2022-11-01 | 罗姆股份有限公司 | 半导体器件及其制造方法 |
Family Cites Families (9)
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JP2883779B2 (ja) * | 1993-01-20 | 1999-04-19 | 松下電工株式会社 | 半導体装置 |
JPH09260503A (ja) | 1996-03-26 | 1997-10-03 | Matsushita Electric Works Ltd | 半導体装置 |
JPH10242452A (ja) | 1997-02-27 | 1998-09-11 | Matsushita Electric Works Ltd | 半導体装置及びその製造方法 |
JP3425131B2 (ja) * | 1999-12-17 | 2003-07-07 | 松下電器産業株式会社 | 高耐圧半導体装置 |
JP3749191B2 (ja) * | 2001-03-22 | 2006-02-22 | 松下電器産業株式会社 | 高耐圧半導体装置 |
KR100535062B1 (ko) | 2001-06-04 | 2005-12-07 | 마츠시타 덴끼 산교 가부시키가이샤 | 고내압 반도체장치 |
JP4326835B2 (ja) * | 2003-05-20 | 2009-09-09 | 三菱電機株式会社 | 半導体装置、半導体装置の製造方法及び半導体装置の製造プロセス評価方法 |
US7098509B2 (en) * | 2004-01-02 | 2006-08-29 | Semiconductor Components Industries, L.L.C. | High energy ESD structure and method |
JP4667756B2 (ja) * | 2004-03-03 | 2011-04-13 | 三菱電機株式会社 | 半導体装置 |
-
2005
- 2005-06-30 JP JP2005191023A patent/JP4906281B2/ja active Active
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2006
- 2006-03-27 US US11/391,166 patent/US7999333B2/en active Active
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Publication number | Publication date |
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US20060220099A1 (en) | 2006-10-05 |
US7999333B2 (en) | 2011-08-16 |
JP2006310719A (ja) | 2006-11-09 |
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