JP4744146B2 - 表面電界緩和型トランジスタを備える半導体部品 - Google Patents
表面電界緩和型トランジスタを備える半導体部品 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 508
- 230000005684 electric field Effects 0.000 title claims description 10
- 239000000758 substrate Substances 0.000 claims description 62
- 230000015556 catabolic process Effects 0.000 claims description 54
- 238000000034 method Methods 0.000 description 21
- 210000000746 body region Anatomy 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
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- 230000005669 field effect Effects 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 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
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- H—ELECTRICITY
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- 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
- H01L29/0603—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 particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions
- H01L29/0607—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 particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration
- H01L29/0611—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 particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices
- H01L29/0615—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 particular constructional design considerations, e.g. for preventing surface leakage, for controlling electric field concentration or for internal isolations regions for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse biased devices by the doping profile or the shape or the arrangement of the PN junction, or with supplementary regions, e.g. junction termination extension [JTE]
- H01L29/063—Reduced surface field [RESURF] pn-junction structures
- H01L29/0634—Multiple reduced surface field (multi-RESURF) structures, e.g. double RESURF, charge compensation, cool, superjunction (SJ), 3D-RESURF, composite buffer (CB) structures
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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
- H01L29/1083—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
- H01L29/66—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
- H01L29/66681—Lateral DMOS transistors, i.e. LDMOS transistors
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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
- H01L29/7833—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
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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
- H01L29/40—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
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- Computer Hardware Design (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Manufacturing & Machinery (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Description
説明を簡単に、かつ明瞭にするために、図に示す形状は概略構成を示しており、そして公知の特徴及び技術についての記述及び詳細は本発明を不必要に不明瞭にしないために省略する。また、図の形状で表わされる構成要素は必ずしも実寸通りになっていない。例えば、形状で表わされる構成要素の幾つかの寸法は他の構成要素に対して誇張して描いて本発明の実施形態を理解し易くなるようにしている。異なる形状に付した同じ参照番号は同じ構成要素を指す。
Claims (2)
- 表面電界緩和型トランジスタ(400)を備える半導体部品であって、
前記表面電界緩和型トランジスタ(400)は、
第1導電型の半導体基板(410)と;
前記半導体基板(410)に積層する第1導電型の半導体エピタキシャル層(411)と
を備え、
前記半導体エピタキシャル層(411)は内部に、
前記半導体エピタキシャル層(411)の表面であるエピタキシャル表面に露出する、第1導電型とは異なる第2導電型の第1半導体領域(440)と;
前記第1半導体領域(440)と前記半導体基板(410)の間に位置する第1導電型の第2半導体領域(420)と;
第2導電型の複数の電気的浮遊半導体領域(415)であって、前記エピタキシャル表面からのそれぞれ前記電気的浮遊半導体領域(415)の深さは、千鳥状に異なることと;
前記第1半導体領域(440)とは異なる位置で前記エピタキシャル表面に露出する第2導電型のソース領域(250)と;
前記エピタキシャル表面に露出するように前記第1半導体領域(440)の内部に位置する第2導電型のドレイン領域(270)と;
前記ソース領域(250)と前記ドレイン領域(270)の間の前記第1半導体領域(440)の部分に位置し、前記エピタキシャル表面から露出し、且つ前記ドレイン領域(270)に接する酸化膜領域(280)と;
を有し、
前記表面電界緩和型トランジスタ(400)は更に、
前記ソース領域(250)から前記酸化膜領域(280)まで延びるゲート酸化膜と;
前記ゲート酸化膜を覆う第2導電型のゲート電極(260)と
を有し、
複数の前記電気的浮遊半導体領域(415)は、前記ソース領域(250)と前記ドレイン領域(270)の間全体に亘って分布し、
それぞれ前記電気的浮遊半導体領域(415)の前記エピタキシャル表面に平行な寸法は、前記ソース領域(250)から前記ドレイン領域(270)までの距離よりも小さく、
前記ドレイン領域(270)と前記第2半導体領域(420)の間が逆バイアスされた場合に、前記第2半導体領域(420)は空乏化されるように構成され、
前記ソース領域(250)と前記ドレイン領域(270)の間のブレークダウン電圧は、前記第1半導体領域(440)に最も近い前記電気的浮遊半導体領域(415)と前記第1半導体領域(440)との間の第1パンチスルー電圧と、前記電気的浮遊半導体領域(415)同士の間それぞれの第2パンチスルー電圧の全てとの合計に等しいことを特徴とする、表面電界緩和型トランジスタ(400)を備える半導体部品。 - 表面電界緩和型トランジスタ(300)を備える半導体部品であって、
前記表面電界緩和型トランジスタ(300)は、
第1導電型の半導体基板(310)と;
前記半導体基板(310)に積層する第1導電型の半導体エピタキシャル層(311)と
を備え、
前記半導体エピタキシャル層(311)は内部に、
前記半導体エピタキシャル層(311)の表面であるエピタキシャル表面に露出する、第1導電型とは異なる第2導電型の第1半導体領域(340)と;
前記第1半導体領域(340)と前記半導体基板(310)の間に位置する第1導電型の第2半導体領域(322)と;
前記半導体基板(310)の前記半導体エピタキシャル層(311)に向かう面に平行な平面内で並んで位置する第2導電型の複数の電気的浮遊半導体領域(315)であって、それぞれ前記電気的浮遊半導体領域(315)は、前記第2半導体領域(322)と前記半導体基板の間に互いに離間して位置することと;
前記第1半導体領域(340)とは異なる位置で前記エピタキシャル表面に露出する第2導電型のソース領域(250)と;
前記エピタキシャル表面に露出するように前記第1半導体領域(340)の内部に位置する第2導電型のドレイン領域(270)と;
前記ソース領域(250)と前記ドレイン領域(270)の間の前記第1半導体領域(340)の部分に位置し、前記エピタキシャル表面から露出し、且つ前記ドレイン領域(270)に接する酸化膜領域(280)と;
を有し、
前記表面電界緩和型トランジスタ(400)は更に、
前記ソース領域(250)から前記酸化膜領域(280)まで延びるゲート酸化膜と;
前記ゲート酸化膜を覆う第2導電型のゲート電極(260)と
を有し、
複数の前記電気的浮遊半導体領域(315)は、前記ソース領域(250)と前記ドレイン領域(270)の間全体に亘って分布し、
それぞれ前記電気的浮遊半導体領域(315)の前記エピタキシャル表面に平行な寸法は、前記ソース領域(250)から前記ドレイン領域(270)までの距離よりも小さく、
前記ドレイン領域(270)と前記第2半導体領域(322)の間が逆バイアスされた場合に、前記第2半導体領域(322)は空乏化されるように構成され、
前記ソース領域(250)と前記ドレイン領域(270)の間のブレークダウン電圧は、複数の前記電気的浮遊半導体領域(315)のうちの1つと前記第2半導体領域(322)との間に存在する第1パンチスルー電圧と、前記電気的浮遊半導体領域(315)同士の間それぞれの第2パンチスルー電圧の全てとの合計に等しいことを特徴とする、表面電界緩和型トランジスタ(300)を備える半導体部品。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/286,169 US6882023B2 (en) | 2002-10-31 | 2002-10-31 | Floating resurf LDMOSFET and method of manufacturing same |
US10/286,169 | 2002-10-31 | ||
PCT/US2003/030586 WO2004042826A2 (en) | 2002-10-31 | 2003-09-23 | Semiconductor component comprising a resur transistor and method of manufacturing same |
Publications (2)
Publication Number | Publication Date |
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JP2006505136A JP2006505136A (ja) | 2006-02-09 |
JP4744146B2 true JP4744146B2 (ja) | 2011-08-10 |
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Application Number | Title | Priority Date | Filing Date |
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JP2004549971A Expired - Lifetime JP4744146B2 (ja) | 2002-10-31 | 2003-09-23 | 表面電界緩和型トランジスタを備える半導体部品 |
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US (1) | US6882023B2 (ja) |
EP (1) | EP1559143A2 (ja) |
JP (1) | JP4744146B2 (ja) |
KR (1) | KR101030923B1 (ja) |
CN (1) | CN100423289C (ja) |
AU (1) | AU2003273366A1 (ja) |
WO (1) | WO2004042826A2 (ja) |
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KR20050052546A (ko) | 2005-06-02 |
JP2006505136A (ja) | 2006-02-09 |
CN100423289C (zh) | 2008-10-01 |
AU2003273366A8 (en) | 2004-06-07 |
WO2004042826A2 (en) | 2004-05-21 |
US20040084744A1 (en) | 2004-05-06 |
EP1559143A2 (en) | 2005-08-03 |
CN1695255A (zh) | 2005-11-09 |
US6882023B2 (en) | 2005-04-19 |
KR101030923B1 (ko) | 2011-04-27 |
WO2004042826A3 (en) | 2004-07-29 |
AU2003273366A1 (en) | 2004-06-07 |
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