JP4907920B2 - 半導体装置及びその製造方法 - Google Patents
半導体装置及びその製造方法 Download PDFInfo
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- JP4907920B2 JP4907920B2 JP2005237763A JP2005237763A JP4907920B2 JP 4907920 B2 JP4907920 B2 JP 4907920B2 JP 2005237763 A JP2005237763 A JP 2005237763A JP 2005237763 A JP2005237763 A JP 2005237763A JP 4907920 B2 JP4907920 B2 JP 4907920B2
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- 239000004065 semiconductor Substances 0.000 title claims description 56
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000005468 ion implantation Methods 0.000 claims description 42
- 239000012535 impurity Substances 0.000 claims description 29
- 239000000758 substrate Substances 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 16
- 238000009792 diffusion process Methods 0.000 claims description 11
- 230000007423 decrease Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims 3
- 230000001133 acceleration Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 230000003068 static effect 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
- H01L29/02—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
- H01L29/10—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 not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/1025—Channel region of field-effect devices
- H01L29/1029—Channel region of field-effect devices of field-effect transistors
- H01L29/1033—Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure
- H01L29/1041—Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure with a non-uniform doping structure in the channel region surface
- H01L29/1045—Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure with a non-uniform doping structure in the channel region surface the doping structure being parallel to the channel length, e.g. DMOS like
-
- 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
- H01L29/66568—Lateral single gate silicon transistors
- H01L29/66659—Lateral single gate silicon transistors with asymmetry in the channel direction, e.g. lateral high-voltage MISFETs with drain offset region, extended drain MISFETs
-
- 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
- H01L29/7833—Field effect transistors with field effect produced by an insulated gate with lightly doped drain or source extension, e.g. LDD MOSFET's; DDD MOSFET's
- H01L29/7835—Field effect transistors with field effect produced by an insulated gate with lightly doped drain or source extension, e.g. LDD MOSFET's; DDD MOSFET's with asymmetrical source and drain regions, e.g. lateral high-voltage MISFETs with drain offset region, extended drain MISFETs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
- H01L21/265—Bombardment with radiation with high-energy radiation producing ion implantation
- H01L21/26586—Bombardment with radiation with high-energy radiation producing ion implantation characterised by the angle between the ion beam and the crystal planes or the main crystal surface
-
- 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
- H01L29/10—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 not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/107—Substrate region of field-effect devices
- H01L29/1075—Substrate region of field-effect devices of field-effect transistors
- H01L29/1079—Substrate region of field-effect devices of field-effect transistors with insulated gate
- H01L29/1083—Substrate region of field-effect devices of field-effect transistors with insulated gate with an inactive supplementary region, e.g. for preventing punch-through, improving capacity effect or leakage current
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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
- H01L29/02—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
- H01L29/10—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 not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/107—Substrate region of field-effect devices
- H01L29/1075—Substrate region of field-effect devices of field-effect transistors
- H01L29/1079—Substrate region of field-effect devices of field-effect transistors with insulated gate
- H01L29/1087—Substrate region of field-effect devices of field-effect transistors with insulated gate characterised by the contact structure of the substrate region, e.g. for controlling or preventing bipolar effect
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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
- H01L29/7838—Field effect transistors with field effect produced by an insulated gate without inversion channel, e.g. buried channel lateral MISFETs, normally-on lateral MISFETs, depletion-mode lateral MISFETs
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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)
- Insulated Gate Type Field-Effect Transistor (AREA)
Description
前記低抵抗層上に形成された高抵抗層と、前記高抵抗層の表面領域に形成された第1導電
型のソース領域と、前記ソース領域から所定の距離離れて形成された第1導電型のドレイ
ン領域と、前記ソース領域と前記ドレイン領域との間の前記高抵抗層の表面領域に形成さ
れた第1導電型の第1リサーフ領域と、前記ソース領域と前記第1リサーフ領域との間に
形成された第2導電型のチャネル領域と、前記ソース領域とチャネル領域に接して設けら
れた濃度の低い第1導電型の拡散領域と、前記チャネル領域上に形成されたゲート絶縁膜
と、前記ゲート絶縁膜上に形成されたゲート電極と、を具備し、前記ゲート電極端の下に
不純物濃度の濃度ピークを持ち、前記不純物濃度が前記ソース側のゲート端からドレイン
側のゲート端に向かって単調に減少する濃度プロファイルを有するように、前記ゲート電
極下の前記チャネル領域が、前記半導体基板に対する垂直方向より所定角度ソース領域側
に傾けた方向からイオン注入して形成されたことを特徴とする。
まず、この発明の第1実施形態の半導体装置について説明する。
この発明の第2実施形態の半導体装置について説明する。前記第1の実施形態における構成と同様の部分には同じ符号を付してその説明は省略する。
この発明の第3実施形態の半導体装置について説明する。前記第1実施形態における構成と同様の部分には同じ符号を付してその説明は省略する。
Claims (5)
- 半導体基板と、
前記半導体基板上に形成された低抵抗層と、
前記低抵抗層上に形成された高抵抗層と、
前記高抵抗層の表面領域に形成された第1導電型のソース領域と、
前記ソース領域から所定の距離離れて形成された第1導電型のドレイン領域と、
前記ソース領域と前記ドレイン領域との間の前記高抵抗層の表面領域に形成された第1
導電型の第1リサーフ領域と、
前記ソース領域と前記第1リサーフ領域との間に形成された第2導電型のチャネル領域
と、
前記ソース領域とチャネル領域に接して設けられた前記ソース領域より不純物濃度の低
い第1導電型の拡散領域と、
前記チャネル領域上に形成されたゲート絶縁膜と、
前記ゲート絶縁膜上に形成されたゲート電極と、
を具備し、前記ゲート電極端の下に不純物濃度の濃度ピークを持ち、前記不純物濃度が
前記ソース側のゲート端からドレイン側のゲート端に向かって単調に減少する濃度プロフ
ァイルを有するように、前記ゲート電極下の前記チャネル領域が、前記半導体基板に対す
る垂直方向より所定角度ソース領域側に傾けた方向からイオン注入して形成されたことを
特徴とする半導体装置。 - 前記チャネル領域と前記第1リサーフ領域との間に形成され、前記第1リサーフ領域よ
り不純物濃度が薄い第2リサーフ領域をさらに具備することを特徴とする請求項1に記載
の半導体装置。 - 前記低抵抗層と前記高抵抗層との間に形成され、前記低抵抗層及び前記高抵抗層と導電
型が異なる半導体層をさらに具備することを特徴とする請求項1または2に記載の半導体
装置。 - 前記ソース領域下に形成された第2導電型の半導体領域をさらに具備することを特徴と
する請求項1に記載の半導体装置。 - 半導体領域上にゲート絶縁膜を形成する工程と、
前記ゲート絶縁膜上にゲート電極を形成する工程と、
ドレイン領域が形成されるべき前記半導体領域を保護膜で覆い、前記ゲート電極をマス
ク材として用い、半導体基板面に対して垂直方向からイオン注入を行ってソース側にソー
ス領域より不純物濃度の低い拡散領域を形成する工程と、
前記ドレイン領域が形成されるべき前記半導体領域を保護膜で覆ったままで、前記ゲー
ト電極をマスク材として用いたセルフアラインにて、前記半導体領域面に対する垂直方向
より所定角度ソース領域側へ傾けた方向から、前記ゲート電極下の前記半導体領域に不純
物を導入し、前記ゲート電極下の濃度プロファイルが、ゲート電極端の下に不純物濃度の
濃度ピークを持ち、前記不純物濃度が、前記ソース側のゲート端からドレイン側のゲート
端に向かって単調に減少し、さらにイオン注入によってドレイン側まで張り出すようにチ
ャネル領域を形成する工程と、
ソース領域が形成されるべき前記半導体領域を保護膜で覆い、イオン注入によりリサー
フ領域を形成する工程と、
前記ゲート電極の側面に側壁絶縁膜を形成した後、前記ソース領域及び前記ドレイン領
域を形成する工程と、
を具備することを特徴とする半導体装置の製造方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005237763A JP4907920B2 (ja) | 2005-08-18 | 2005-08-18 | 半導体装置及びその製造方法 |
US11/505,337 US7692242B2 (en) | 2005-08-18 | 2006-08-17 | Semiconductor device used as high-speed switching device and power device |
US12/716,352 US7998849B2 (en) | 2005-08-18 | 2010-03-03 | Semiconductor device used as high-speed switching device and power device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005237763A JP4907920B2 (ja) | 2005-08-18 | 2005-08-18 | 半導体装置及びその製造方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2007053257A JP2007053257A (ja) | 2007-03-01 |
JP4907920B2 true JP4907920B2 (ja) | 2012-04-04 |
Family
ID=37766660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2005237763A Expired - Fee Related JP4907920B2 (ja) | 2005-08-18 | 2005-08-18 | 半導体装置及びその製造方法 |
Country Status (2)
Country | Link |
---|---|
US (2) | US7692242B2 (ja) |
JP (1) | JP4907920B2 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009004493A (ja) * | 2007-06-20 | 2009-01-08 | Toshiba Corp | 半導体装置及びその製造方法 |
JP4970185B2 (ja) | 2007-07-30 | 2012-07-04 | 株式会社東芝 | 半導体装置及びその製造方法 |
JP5423269B2 (ja) * | 2009-09-15 | 2014-02-19 | 富士通セミコンダクター株式会社 | 半導体装置とその製造方法 |
JP4820899B2 (ja) * | 2009-10-23 | 2011-11-24 | 株式会社東芝 | 半導体装置 |
JP5560812B2 (ja) * | 2010-03-23 | 2014-07-30 | 富士通セミコンダクター株式会社 | 半導体装置及びその製造方法 |
US9105721B2 (en) | 2010-07-09 | 2015-08-11 | Magnachip Semiconductor, Ltd. | Semiconductor device and manufacturing method thereof |
KR101245935B1 (ko) * | 2010-07-09 | 2013-03-20 | 매그나칩 반도체 유한회사 | 반도체 소자 및 그 제조방법 |
US9660074B2 (en) * | 2014-08-07 | 2017-05-23 | Texas Instruments Incorporated | Methods and apparatus for LDMOS devices with cascaded RESURF implants and double buffers |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06291309A (ja) * | 1993-04-07 | 1994-10-18 | Fujitsu Ltd | 半導体装置 |
JP3221766B2 (ja) * | 1993-04-23 | 2001-10-22 | 三菱電機株式会社 | 電界効果トランジスタの製造方法 |
JP2951292B2 (ja) * | 1996-06-21 | 1999-09-20 | 松下電器産業株式会社 | 相補型半導体装置及びその製造方法 |
JP3356629B2 (ja) * | 1996-07-15 | 2002-12-16 | 日本電気株式会社 | 横型mosトランジスタの製造方法 |
JP2000312002A (ja) * | 1999-04-27 | 2000-11-07 | Sanyo Electric Co Ltd | 半導体装置とその製造方法 |
JP4488660B2 (ja) * | 2000-09-11 | 2010-06-23 | 株式会社東芝 | Mos電界効果トランジスタ |
KR100340925B1 (ko) | 2000-11-04 | 2002-06-20 | 오길록 | 고주파용 전력소자 및 그의 제조 방법 |
EP1346406A1 (en) * | 2000-12-11 | 2003-09-24 | Koninklijke Philips Electronics N.V. | Method for the manufacture of a semiconductor device with a field-effect transistor |
JP3659195B2 (ja) * | 2001-06-18 | 2005-06-15 | サンケン電気株式会社 | 半導体装置及びその製造方法 |
SE0104164L (sv) * | 2001-12-11 | 2003-06-12 | Ericsson Telefon Ab L M | Högspännings-mos-transistor |
JP2004063844A (ja) | 2002-07-30 | 2004-02-26 | Toshiba Corp | 半導体装置及びその製造方法 |
US6882023B2 (en) * | 2002-10-31 | 2005-04-19 | Motorola, Inc. | Floating resurf LDMOSFET and method of manufacturing same |
US6727127B1 (en) * | 2002-11-21 | 2004-04-27 | Cree, Inc. | Laterally diffused MOS transistor (LDMOS) and method of making same |
US6870218B2 (en) * | 2002-12-10 | 2005-03-22 | Fairchild Semiconductor Corporation | Integrated circuit structure with improved LDMOS design |
US6828628B2 (en) * | 2003-03-05 | 2004-12-07 | Agere Systems, Inc. | Diffused MOS devices with strained silicon portions and methods for forming same |
US7323731B2 (en) * | 2003-12-12 | 2008-01-29 | Canon Kabushiki Kaisha | Photoelectric conversion device, method of manufacturing photoelectric conversion device, and image pickup system |
JP2009004493A (ja) * | 2007-06-20 | 2009-01-08 | Toshiba Corp | 半導体装置及びその製造方法 |
JP4970185B2 (ja) * | 2007-07-30 | 2012-07-04 | 株式会社東芝 | 半導体装置及びその製造方法 |
-
2005
- 2005-08-18 JP JP2005237763A patent/JP4907920B2/ja not_active Expired - Fee Related
-
2006
- 2006-08-17 US US11/505,337 patent/US7692242B2/en not_active Expired - Fee Related
-
2010
- 2010-03-03 US US12/716,352 patent/US7998849B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP2007053257A (ja) | 2007-03-01 |
US20100159659A1 (en) | 2010-06-24 |
US7692242B2 (en) | 2010-04-06 |
US20070040216A1 (en) | 2007-02-22 |
US7998849B2 (en) | 2011-08-16 |
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