JP2008509545A - 高圧nmosトランジスタおよび製造方法 - Google Patents
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Abstract
Description
図2には、図1に示されたトランジスタの別の実施例の断面図が示されている。
図3には、本発明の高圧NMOSトランジスタの第1の実施例の断面図が示されている。
図4には、本発明に相応する高圧NMOSトランジスタの別の実施例の、図3に相応する断面図が示されている。
図5には、ゲートフィールドプレートが設けられていない実施例に対する、図3に相応する断面が示されている。
図6には、ゲートフィールドプレートが設けられていない実施例に対する、図4に相応する断面が示されている。
Claims (6)
- 高圧NMOSトランジスタであって、
半導体基体または基板(1)内に、上面に、深いn型ドープされたウェル(DN)と、該深いn型ドープされたウェル(DN)内の深いp型ドープされたウェル(DP,DP')が構成されており、
n型ドープされたソース領域(2)が前記深いp型ドープされたウェル(DP)内に配置されており、
チャネル領域(13)が前記ソース領域(2)に接して設けられており、
当該チャネル領域から電気的に絶縁されたゲート電極(5)がチャネル領域(13)上に設けられており、
n型ドープされたドレイン領域(3)が前記ソース領域(2)に対向しているチャネル領域(13)の面に配置されており、
前記チャネル領域(13)と前記ドレイン領域(3)の間にドリフト区間(14、15)が設けられており、
前記深いp型ドープされたウェル(DP, DP')の一部が当該ドリフト区間(14、15)に沿って設けられており、
前記深いn型ドープされたウェル(DN)と、深いp型ドープされたウェル(DP、DP')の間のドレイン側境界面が前記ドリフト区間(14、15)の領域内に配置されている形式のものにおいて
ドナーがインプランテーションされた対抗ドーピング領域(12)が設けられており、
当該対抗ドーピング領域は、前記半導体基体または基板の上面に設けられた、深いp型ドープされたウェル(DP、DP')の領域と重畳し、少なくとも前記ドリフト区間(14)の一部を構成しており、
前記ドレイン領域(3)は、前記深いn型ドープされたウェル(DN)内の平らなn型ドープされたウェル(SN)内に配置されている、
ことを特徴とする高圧NMOSトランジスタ。 - 前記ドリフト区間(14,15)上に、0.5μmの最大厚さを有するゲート酸化膜(8)が設けられている、請求項1記載の高圧NMOSトランジスタ。
- 高圧NMOSトランジスタの製造方法であって、
半導体基体または基板(1)内に上面にドーパント材料のインプランテーションによって深いn型ドープされたウェル(DN)を、DNマスクを使用して製造し、
深いp型ドープされたウェル(DP)を、DPマスクを使用して製造し、
平らなn型ドープされたウエル(SN)を、SNマスクを使用して製造し、
前記深いp型ドープされたウェル(DP)を深いn型ドープされたウェル(DN)内に配置し、この配置によって、前記上面から間隔を伴って配置された、前記深いp型ドープされたウェル(DP)の下方境界面が、間隔(A)で、前記深いn型ドープされたウェルの下方境界面の上方に存在し、
前記深いp型ドープされたウェル(DP)の一部は、所定のチャネル領域(13)とドリフト区間(14、15)に対して設けられた領域を含み、
n型ドープされたソース領域(2)を、前記深いp型ドープされたウェル(DP)内に配置し、
ドレイン領域(3)を、前記平らなn型ドープされたウェル(SN)内に配置し、
ゲート誘電体(7)を前記チャネル領域(13)上に配置し、
ゲート電極(5)を、前記ゲート誘電体(7)上に配置し、
前記チャネル領域(13)と前記ドレイン領域(3)の間にドリフト区間(14)を構成するために、前記半導体基体または基板の上面の前記平らなn型ドープされたウェル(SN)をインプランテーションするとともに、対抗ドーピング領域(12)を構成し、
当該対抗ドーピング領域は、前記深いp型ドープされたウェル(DP、DP')の上面側領域と重畳している、
ことを特徴とする、高圧NMOSトランジスタの製造方法。 - 前記平らなp型ドープされたウェル(SP)を、前記深いp型ドープされたウェル(DP)内に、前記ソース領域(2)の方を向いている、前記チャネル領域(13)の面に、SPマスクを使用して、ドーパント材料をインプランテーションすることによって製造し、
前記ソース領域(2)を、前記平らなp型ドープされたウェル(SP)に接して製造する、請求項3記載の方法。 - 前記チャネル領域(13)とドレイン領域(3)の間に、前記半導体基体または基板の上面に、ゲート酸化膜(8)を製造し、
前記対抗ドーピング領域(12)を形成するために、前記ゲート酸化膜(8)の製造後に、ドーパント材料をインプランテーションする、請求項3または4記載の方法 - 前記深いn型ドープされたウェル(DN)および前記深いp型ドープされたウェル(DP)を製造した後に、ゲート酸化膜(8)を製造し、
前記平らなn型ドープされたウェル(SN)を、前記ゲート酸化膜(8)を通じたインプランテーションによって製造する、請求項5記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE102004038369.3A DE102004038369B4 (de) | 2004-08-06 | 2004-08-06 | Hochvolt-NMOS-Transistor und Herstellungsverfahren |
DE102004038369.3 | 2004-08-06 | ||
PCT/EP2005/008542 WO2006015822A2 (de) | 2004-08-06 | 2005-08-05 | Hochvolt-nmos-transistor und herstellungsverfahren |
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JP2008509545A true JP2008509545A (ja) | 2008-03-27 |
JP5098026B2 JP5098026B2 (ja) | 2012-12-12 |
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US (1) | US7898030B2 (ja) |
EP (1) | EP1774596B1 (ja) |
JP (1) | JP5098026B2 (ja) |
KR (1) | KR100825466B1 (ja) |
DE (1) | DE102004038369B4 (ja) |
WO (1) | WO2006015822A2 (ja) |
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JP2010003836A (ja) * | 2008-06-19 | 2010-01-07 | Toyota Central R&D Labs Inc | 半導体装置 |
JP2011181709A (ja) * | 2010-03-02 | 2011-09-15 | Hitachi Ltd | 半導体装置およびその製造方法 |
JP2014057088A (ja) * | 2008-01-14 | 2014-03-27 | Volterra Semiconductor Corp | 保護されたチャネルを有するパワートランジスタ |
JP2015135950A (ja) * | 2013-12-20 | 2015-07-27 | 株式会社デンソー | 半導体装置 |
US11141547B2 (en) | 2014-12-04 | 2021-10-12 | Norton (Waterford) Limited | Inhalation monitoring system and method |
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- 2005-08-05 WO PCT/EP2005/008542 patent/WO2006015822A2/de active IP Right Grant
- 2005-08-05 KR KR1020077002620A patent/KR100825466B1/ko active IP Right Grant
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JP2014057088A (ja) * | 2008-01-14 | 2014-03-27 | Volterra Semiconductor Corp | 保護されたチャネルを有するパワートランジスタ |
JP2010003836A (ja) * | 2008-06-19 | 2010-01-07 | Toyota Central R&D Labs Inc | 半導体装置 |
JP2011181709A (ja) * | 2010-03-02 | 2011-09-15 | Hitachi Ltd | 半導体装置およびその製造方法 |
JP2015135950A (ja) * | 2013-12-20 | 2015-07-27 | 株式会社デンソー | 半導体装置 |
US11141547B2 (en) | 2014-12-04 | 2021-10-12 | Norton (Waterford) Limited | Inhalation monitoring system and method |
Also Published As
Publication number | Publication date |
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US7898030B2 (en) | 2011-03-01 |
WO2006015822A2 (de) | 2006-02-16 |
JP5098026B2 (ja) | 2012-12-12 |
WO2006015822A3 (de) | 2006-07-27 |
US20070278570A1 (en) | 2007-12-06 |
DE102004038369B4 (de) | 2018-04-05 |
KR100825466B1 (ko) | 2008-04-28 |
EP1774596B1 (de) | 2008-01-09 |
KR20070046836A (ko) | 2007-05-03 |
EP1774596A2 (de) | 2007-04-18 |
DE102004038369A1 (de) | 2006-03-16 |
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