JP7246482B2 - 降伏電圧を高めた高電圧半導体装置およびその製造方法 - Google Patents
降伏電圧を高めた高電圧半導体装置およびその製造方法 Download PDFInfo
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- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 1
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Description
Claims (19)
- 高電圧半導体装置であって、
活性領域を有する半導体基板であって、第1の導電型を有する半導体基板と、
前記半導体基板の前記活性領域上に配置されたゲート構造と、
前記ゲート構造の側方において前記半導体基板の前記活性領域内に配置された少なくとも1つの第1の分離構造と、
前記ゲート構造の側方において前記半導体基板の前記活性領域内に配置された少なくとも1つの第1のドリフト領域と、を含み、前記少なくとも1つの第1のドリフト領域は、前記第1の導電型と相補的な第2の導電型を有し、前記少なくとも1つの第1の分離構造は、前記少なくとも1つの第1のドリフト領域を垂直に貫通し、
前記少なくとも1つの第1のドリフト領域内に配置された少なくとも1つの第1のドープ領域をさらに含み、前記少なくとも1つの第1の分離構造は、前記少なくとも1つの第1のドープ領域と前記ゲート構造との間に配置され、前記第1のドープ領域は前記第2の導電型を有し、
前記少なくとも1つの第1のドープ領域は、前記ゲート構造の延在方向において前記少なくとも1つの第1の分離構造の2つの対向する縁部の間に配置され、
前記少なくとも1つの第1のドープ領域の底部は、前記少なくとも1つの第1のドリフト領域の底部よりも浅い、高電圧半導体装置。 - 前記少なくとも1つの第1のドリフト領域のドーピング濃度は、前記少なくとも1つの第1のドープ領域のドーピング濃度よりも低い、請求項1に記載の高電圧半導体装置。
- 前記少なくとも1つの第1のドリフト領域は、上面視において前記少なくとも1つの第1の分離構造を取り囲む、請求項1に記載の高電圧半導体装置。
- 前記半導体基板内に配置された第2の分離構造をさらに含み、前記第2の分離構造は、前記活性領域を画定するための開口部を有する、請求項1に記載の高電圧半導体装置。
- 前記少なくとも1つの第1の分離構造は前記第2の分離構造から分離されている、請求項4に記載の高電圧半導体装置。
- 前記第2の分離構造の底部は、前記少なくとも1つの第1のドリフト領域の底部よりも深い、請求項4に記載の高電圧半導体装置。
- 前記ゲート構造の別の側方において前記半導体基板の前記活性領域内に配置された少なくとも1つの第2のドープ領域をさらに含み、前記第2のドープ領域は前記第2の導電型を有する、請求項1に記載の高電圧半導体装置。
- 前記ゲート構造の別の側方において前記半導体基板の前記活性領域内に配置された少なくとも1つの第2のドリフト領域をさらに含み、前記少なくとも1つの第2のドープ領域は、前記少なくとも1つの第2のドリフト領域内に配置され、前記少なくとも1つの第2のドリフト領域は前記第2の導電型を有し、前記少なくとも1つの第2のドリフト領域のドーピング濃度は、前記少なくとも1つの第2のドープ領域のドーピング濃度よりも低い、請求項7に記載の高電圧半導体装置。
- 前記少なくとも1つの第2のドープ領域と前記ゲート構造との間で前記半導体基板の前記活性領域内に配置された第3の分離構造をさらに含み、前記第3の分離構造は、前記少なくとも1つの第2のドリフト領域を垂直に貫通する、請求項8に記載の高電圧半導体装置。
- 前記少なくとも1つの第2のドープ領域は、前記ゲート構造の延在方向において前記第3の分離構造の2つの対向する縁部の間に配置される、請求項9に記載の高電圧半導体装置。
- 前記少なくとも1つの第1の分離構造は、前記ゲート構造の延在方向に垂直な方向に沿って配置された複数の第1の分離構造を含む、請求項1に記載の高電圧半導体装置。
- 前記少なくとも1つの第1の分離構造は、互いに離間され、かつ前記ゲート構造の延在方向に沿って配置された複数の第1の分離構造を含み、前記高電圧半導体装置は、複数の前記第1のドープ領域を含み、前記第1のドープ領域は、前記ゲート構造の前記延在方向に垂直な方向において前記第1の分離構造と完全に重なる、請求項1に記載の高電圧半導体装置。
- 高電圧半導体装置の製造方法であって、
第1の導電型を有する半導体基板を提供するステップであって、前記半導体基板は活性領域を有する、ステップと、
前記半導体基板の前記活性領域内に少なくとも1つの第1の分離構造を形成するステップと、
前記半導体基板の前記活性領域上および前記少なくとも1つの第1の分離構造の側方にゲート構造を形成するステップと、
前記ゲート構造の側方において前記半導体基板の前記活性領域内に少なくとも1つの第1のドリフト領域を形成するステップであって、前記少なくとも1つの第1のドリフト領域は、前記第1の導電型と相補的な第2の導電型を有する、ステップと、を含み、前記少なくとも1つの第1の分離構造の底部は、前記少なくとも1つの第1のドリフト領域の底部よりも深く、
前記少なくとも1つの第1のドリフト領域内に少なくとも1つの第1のドープ領域を形成するステップをさらに含み、前記少なくとも1つの第1のドープ領域は前記第2の導電型を有し、前記少なくとも1つの第1の分離構造は、前記ゲート構造と前記少なくとも1つの第1のドープ領域との間に配置され、
前記少なくとも1つの第1のドープ領域は、前記ゲート構造の延在方向において前記少なくとも1つの第1の分離構造の2つの対向する縁部の間に配置され、
前記少なくとも1つの第1のドープ領域の底部は、前記少なくとも1つの第1のドリフト領域の底部よりも浅い、高電圧半導体装置の製造方法。 - 前記少なくとも1つの第1のドリフト領域のドーピング濃度は、前記少なくとも1つの第1のドープ領域のドーピング濃度よりも低い、請求項13に記載の高電圧半導体装置の製造方法。
- 前記少なくとも1つの第1の分離構造を形成するステップは、前記半導体基板内に第2の分離構造を形成するステップを含み、前記第2の分離構造は、前記活性領域を画定するための開口部を有する、請求項13に記載の高電圧半導体装置の製造方法。
- 前記少なくとも1つの第1の分離構造は前記第2の分離構造から離間している、請求項15に記載の高電圧半導体装置の製造方法。
- 前記少なくとも1つの第1のドープ領域を形成するステップは、前記ゲート構造の別の側方において前記半導体基板の前記活性領域内に少なくとも1つの第2のドープ領域を形成するステップを含み、前記少なくとも1つの第2のドープ領域は前記第2の導電型を有する、請求項13に記載の高電圧半導体装置の製造方法。
- 前記第1のドリフト領域を形成するステップは、前記半導体基板内に少なくとも1つの第2のドリフト領域を形成するステップを含み、前記少なくとも1つの第2のドリフト領域は前記第2の導電型を有し、前記少なくとも1つの第2のドープ領域は、前記少なくとも1つの第2のドリフト領域内に配置され、前記少なくとも1つの第2のドリフト領域のドーピング濃度は、前記少なくとも1つの第2のドープ領域のドーピング濃度よりも低い、請求項17に記載の高電圧半導体装置の製造方法。
- 前記少なくとも1つの第1の分離構造を形成するステップは、前記半導体基板内におよび前記少なくとも1つの第2のドープ領域と前記ゲート構造との間に第3の分離構造を形成するステップを含み、前記第3の分離構造は、前記少なくとも1つの第2のドリフト領域を垂直に貫通する、請求項18に記載の高電圧半導体装置の製造方法。
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PCT/CN2019/076413 WO2020172833A1 (en) | 2019-02-28 | 2019-02-28 | High-voltage semiconductor device with increased breakdown voltage and manufacturing method thereof |
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JP2022509245A JP2022509245A (ja) | 2022-01-20 |
JP7246482B2 true JP7246482B2 (ja) | 2023-03-27 |
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CN112768523B (zh) * | 2019-11-04 | 2024-04-05 | 瑞昱半导体股份有限公司 | 半导体装置 |
US11990507B2 (en) * | 2021-08-16 | 2024-05-21 | United Microelectronics Corp. | High voltage transistor structure |
CN114068534A (zh) * | 2021-11-15 | 2022-02-18 | 武汉新芯集成电路制造有限公司 | 半导体器件及其制造方法 |
CN116344623B (zh) * | 2023-05-30 | 2023-08-22 | 粤芯半导体技术股份有限公司 | 高压mos器件及其制备方法 |
Citations (4)
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JP2008140922A (ja) | 2006-11-30 | 2008-06-19 | Toshiba Corp | 半導体装置 |
US20090014815A1 (en) | 2007-07-13 | 2009-01-15 | Magnachip Semiconductor, Ltd. | High voltage device and method for fabricating the same |
JP2009260208A (ja) | 2008-03-26 | 2009-11-05 | Fuji Electric Device Technology Co Ltd | 半導体装置 |
US20140339650A1 (en) | 2013-05-17 | 2014-11-20 | Micron Technology, Inc. | Transistors having features which preclude straight-line lateral conductive paths from a channel reqion to a source/drain reqion |
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US7485925B2 (en) * | 2005-08-30 | 2009-02-03 | United Microelectronics Corp. | High voltage metal oxide semiconductor transistor and fabricating method thereof |
EP1868239B1 (en) * | 2006-06-12 | 2020-04-22 | ams AG | Method of manufacturing trenches in a semiconductor body |
US20080308868A1 (en) * | 2007-06-15 | 2008-12-18 | United Microelectronics Corp. | High voltage metal oxide semiconductor transistor and fabrication method thereof |
WO2009050669A2 (en) * | 2007-10-19 | 2009-04-23 | Nxp B.V. | High voltage semiconductor device |
US8159029B2 (en) * | 2008-10-22 | 2012-04-17 | Taiwan Semiconductor Manufacturing Company, Ltd. | High voltage device having reduced on-state resistance |
KR101128716B1 (ko) * | 2009-11-17 | 2012-03-23 | 매그나칩 반도체 유한회사 | 반도체 장치 |
US8643136B2 (en) * | 2011-03-01 | 2014-02-04 | Richtek Technology Corporation | High voltage device and manufacturing method thereof |
CN104617139B (zh) * | 2013-11-05 | 2017-08-08 | 上海华虹宏力半导体制造有限公司 | Ldmos器件及制造方法 |
CN107425046B (zh) * | 2016-05-23 | 2020-05-12 | 中芯国际集成电路制造(北京)有限公司 | 一种ldmos器件及其制作方法 |
CN108346696A (zh) * | 2017-01-22 | 2018-07-31 | 中芯国际集成电路制造(上海)有限公司 | Ldmos器件及其制造方法 |
TWI635611B (zh) * | 2017-09-25 | 2018-09-11 | 新唐科技股份有限公司 | 高壓半導體元件 |
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- 2019-02-28 CN CN202010515871.2A patent/CN111627985B/zh active Active
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Patent Citations (4)
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JP2008140922A (ja) | 2006-11-30 | 2008-06-19 | Toshiba Corp | 半導体装置 |
US20090014815A1 (en) | 2007-07-13 | 2009-01-15 | Magnachip Semiconductor, Ltd. | High voltage device and method for fabricating the same |
JP2009260208A (ja) | 2008-03-26 | 2009-11-05 | Fuji Electric Device Technology Co Ltd | 半導体装置 |
US20140339650A1 (en) | 2013-05-17 | 2014-11-20 | Micron Technology, Inc. | Transistors having features which preclude straight-line lateral conductive paths from a channel reqion to a source/drain reqion |
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CN110024131A (zh) | 2019-07-16 |
US20220013632A1 (en) | 2022-01-13 |
KR20210083312A (ko) | 2021-07-06 |
TWI743530B (zh) | 2021-10-21 |
KR102578076B1 (ko) | 2023-09-12 |
EP3853905A1 (en) | 2021-07-28 |
CN111627985A (zh) | 2020-09-04 |
JP2022509245A (ja) | 2022-01-20 |
CN111627985B (zh) | 2021-03-30 |
CN110024131B (zh) | 2020-07-28 |
TW202034530A (zh) | 2020-09-16 |
WO2020172833A1 (en) | 2020-09-03 |
US20200279915A1 (en) | 2020-09-03 |
EP3853905A4 (en) | 2022-05-11 |
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