JP4703769B2 - 半導体装置及びその製造方法 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims description 64
- 238000004519 manufacturing process Methods 0.000 title description 15
- 239000012535 impurity Substances 0.000 claims description 105
- 239000010410 layer Substances 0.000 claims description 34
- 230000015572 biosynthetic process Effects 0.000 claims description 31
- 239000000758 substrate Substances 0.000 claims description 28
- 239000002344 surface layer Substances 0.000 claims description 12
- 230000005669 field effect Effects 0.000 claims description 2
- 238000005468 ion implantation Methods 0.000 description 34
- 238000000034 method Methods 0.000 description 29
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- 238000010586 diagram Methods 0.000 description 17
- 108091006146 Channels Proteins 0.000 description 11
- 150000002500 ions Chemical class 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 108010075750 P-Type Calcium Channels Proteins 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
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- 239000007772 electrode material Substances 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
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- 230000000149 penetrating effect Effects 0.000 description 2
- 108090000699 N-Type Calcium Channels Proteins 0.000 description 1
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- 229910052710 silicon Inorganic materials 0.000 description 1
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Description
図2は、本発明の第1実施形態に係るLDMOS10の模式断面図を示す。
図7は、LDMOS10の第2実施形態を示す模式図である。なお、上記第1実施形態と同じ要素については同じ符号を付し、その詳細な説明は省略する。
次に、図12は、本発明の第3実施形態に係るLDMOSの模式断面図を示す。
Claims (6)
- 第1導電型の第1の半導体領域と、前記第1の半導体領域よりも第1導電型不純物濃度が低い第1導電型の第2の半導体領域とを有する半導体層と、
前記第1の半導体領域上に設けられた第2導電型のソース領域と、
前記第2の半導体領域上に設けられた第2導電型のドレイン領域と、
前記第1の半導体領域上における前記ソース領域と前記ドレイン領域との間に設けられた第1導電型のチャネル領域と、
前記チャネル領域上に設けられた絶縁膜と、
前記絶縁膜上に設けられたゲート電極と、
前記ゲート電極と前記ドレイン領域との間の前記半導体層の表層部であって前記第2の半導体領域上に設けられて前記ドレイン領域に接し、前記ドレイン領域よりも第2導電型不純物濃度が低い第2導電型のドリフト領域と、
を備え、
前記第2の半導体領域は、
前記第1の半導体領域側に設けられ、前記ドリフト領域における前記ゲート電極側の部分に接する第1の領域と、
前記第1の領域よりも第1導電型不純物濃度が低く、前記ドリフト領域における前記ドレイン領域側の部分に接する第2の領域と、
を有することを特徴とする半導体装置。 - 前記ドリフト領域において、前記ドレイン領域側の部分は前記ゲート電極側の部分よりも不純物濃度が高いことを特徴とする請求項1記載の半導体装置。
- 前記第2の半導体領域は、前記ドレイン領域の下に設けられて前記ドレイン領域に接し、前記第2の領域よりも第1導電型不純物濃度が低い第3の領域をさらに有することを特徴とする請求項1記載の半導体装置。
- 前記半導体層を支持する基板と、
前記基板と前記半導体層との間に設けられ、前記半導体層を前記基板の電位から分離する第2の半導体層と、
をさらに備えたことを特徴とする請求項1〜3のいずれか1つに記載の半導体装置。 - 前記第1の半導体領域と前記第2の半導体領域とは、同じ深さに第1導電型不純物濃度ピークを有することを特徴とする請求項1〜4のいずれか1つに記載の半導体装置。
- 互いに素子分離された第1のトランジスタ形成領域と第2のトランジスタ形成領域とを有する基板をさらに備え、
前記第1の半導体領域及び前記第2の半導体領域は、前記基板の前記第1のトランジスタ形成領域に設けられ、
前記基板の前記第2のトランジスタ形成領域には、前記第1の半導体領域と実質第1導電型不純物濃度が同じ第1導電型の第3の半導体領域が設けられ、
前記第3の半導体領域上に、第2導電型チャネル型の電界効果トランジスタが設けられていることを特徴とする請求項1〜5のいずれか1つに記載の半導体装置。
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US12/688,459 US20100176449A1 (en) | 2009-01-15 | 2010-01-15 | Semiconductor device and method for manufacturing same |
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JP5434501B2 (ja) * | 2009-11-13 | 2014-03-05 | 富士通セミコンダクター株式会社 | Mosトランジスタおよび半導体集積回路装置、半導体装置 |
CN103187279B (zh) * | 2011-12-29 | 2016-07-06 | 无锡华润上华半导体有限公司 | 半导体器件的制作方法 |
WO2013164210A1 (de) | 2012-05-02 | 2013-11-07 | Elmos Semiconductor Ag | Pmos-transistor mit niedriger schwellspannung sowie verfahren zu seiner herstellung |
JP5936513B2 (ja) * | 2012-10-12 | 2016-06-22 | 三菱電機株式会社 | 横型高耐圧トランジスタの製造方法 |
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CN104701369A (zh) * | 2013-12-06 | 2015-06-10 | 上海华虹宏力半导体制造有限公司 | 射频ldmos器件及工艺方法 |
CN104701368B (zh) * | 2013-12-06 | 2018-04-17 | 上海华虹宏力半导体制造有限公司 | 射频ldmos器件及其制造方法 |
US20150200295A1 (en) * | 2014-01-10 | 2015-07-16 | Cypress Semiconductor Corporation | Drain Extended MOS Transistors With Split Channel |
US9159819B2 (en) * | 2014-02-20 | 2015-10-13 | Infineon Technologies Ag | Semiconductor device and RC-IGBT with zones directly adjoining a rear side electrode |
US9443927B2 (en) * | 2014-07-30 | 2016-09-13 | United Microelectronics Corp. | Semiconductor device |
CN104465407A (zh) * | 2014-12-31 | 2015-03-25 | 中航(重庆)微电子有限公司 | 一种半导体器件及制备方法 |
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JP2006245482A (ja) * | 2005-03-07 | 2006-09-14 | Ricoh Co Ltd | 半導体装置及びその製造方法、並びにその応用装置 |
JP2007103721A (ja) * | 2005-10-05 | 2007-04-19 | Toshiba Corp | Dc−dcコンバータ |
JP2008507140A (ja) * | 2004-07-15 | 2008-03-06 | フェアチャイルド・セミコンダクター・コーポレーション | 非対称なヘテロドープされた高電圧のmosfet(ah2mos) |
JP2008172112A (ja) * | 2007-01-15 | 2008-07-24 | Toshiba Corp | 半導体装置 |
JP2008235933A (ja) * | 2004-10-29 | 2008-10-02 | Toshiba Corp | 半導体装置 |
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WO2003017349A2 (de) * | 2001-08-17 | 2003-02-27 | IHP GmbH - Innovations for High Performance Microelectronics/Institut für innovative Mikroelektronik | Dmos-transistor |
US7238986B2 (en) * | 2004-05-03 | 2007-07-03 | Texas Instruments Incorporated | Robust DEMOS transistors and method for making the same |
JP2007049039A (ja) * | 2005-08-11 | 2007-02-22 | Toshiba Corp | 半導体装置 |
US7375408B2 (en) * | 2005-10-11 | 2008-05-20 | United Microelectronics Corp. | Fabricating method of a high voltage metal oxide semiconductor device |
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JPH05259444A (ja) * | 1991-05-06 | 1993-10-08 | Siliconix Inc | 低濃度にドープされたドレインを有するラテラルmos電界効果トランジスタ及びその製造方法 |
JPH0936248A (ja) * | 1995-07-18 | 1997-02-07 | Siemens Ag | 半導体基体内に2個のトランジスタを形成する方法 |
JP2004031519A (ja) * | 2002-06-24 | 2004-01-29 | Fuji Electric Holdings Co Ltd | 半導体装置 |
JP2008507140A (ja) * | 2004-07-15 | 2008-03-06 | フェアチャイルド・セミコンダクター・コーポレーション | 非対称なヘテロドープされた高電圧のmosfet(ah2mos) |
JP2008235933A (ja) * | 2004-10-29 | 2008-10-02 | Toshiba Corp | 半導体装置 |
JP2006245482A (ja) * | 2005-03-07 | 2006-09-14 | Ricoh Co Ltd | 半導体装置及びその製造方法、並びにその応用装置 |
JP2007103721A (ja) * | 2005-10-05 | 2007-04-19 | Toshiba Corp | Dc−dcコンバータ |
JP2008172112A (ja) * | 2007-01-15 | 2008-07-24 | Toshiba Corp | 半導体装置 |
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