JP2013135222A - 半導体素子及びその製造方法 - Google Patents
半導体素子及びその製造方法 Download PDFInfo
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- JP2013135222A JP2013135222A JP2012271981A JP2012271981A JP2013135222A JP 2013135222 A JP2013135222 A JP 2013135222A JP 2012271981 A JP2012271981 A JP 2012271981A JP 2012271981 A JP2012271981 A JP 2012271981A JP 2013135222 A JP2013135222 A JP 2013135222A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 112
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 claims description 14
- 230000005669 field effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
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- H01L29/76—Unipolar devices, e.g. field effect transistors
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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Abstract
【解決手段】本発明によると、一定の体積を有する半導体本体と、上記半導体本体の上面に形成されたソースと、上記半導体本体の一定の深さを有する溝内に形成され、上記半導体本体の上面に突出されて、設定しようとするキャパシタンスに応じて突出高さが変更される突出領域を有するゲートと、上記ゲートの上記突出領域の横面とキャパシタンスを形成する電極と、を含む半導体素子及びその製造方法が提案される。
【選択図】図5
Description
110 半導体本体
120 ソース
130 ゲート
140 電極
150 誘電体層
160 ドレイン
Claims (12)
- 一定の体積を有する半導体本体と、
前記半導体本体の上面に形成されたソースと、
前記半導体本体の一定の深さを有する溝内に形成され、前記半導体本体の上面に突出されて、設定しようとするキャパシタンスに応じて突出高さが変更される突出領域を有するゲートと、
前記ソースに電気的に連結され、前記ゲートの前記突出領域の側面とキャパシタンスを形成する電極と
を含む半導体素子。 - 前記半導体本体の下面に形成されたドレインをさらに含む請求項1に記載の半導体素子。
- 前記ゲートの突出領域と前記電極との間には誘電体層が形成される請求項1または2に記載の半導体素子。
- 前記ソース、前記ドレイン及び前記ゲートは、一つの金属酸化膜半導体電界効果トランジスタ(metal−oxide−semiconductor field−effect transistor;MOS FET)を形成する請求項2に記載の半導体素子。
- 前記ゲートの前記突出領域の突出高さは、少なくとも前記突出領域の幅の0.5倍である請求項1から4の何れか1項に記載の半導体素子。
- 一定の体積を有する半導体本体、前記半導体本体の上面に形成されたソース、前記半導体本体の一定の深さを有する溝内に形成され、前記半導体本体の上面に突出される突出領域を有するゲート、及び前記ゲートの前記突出領域を覆う電極を製造する段階と、
前記ゲートの前記突出領域の上面を覆う電極を研磨(Grinding)して除去する段階と、
前記ゲートの前記突出領域の上面に酸化膜を成長させる段階と
を含む半導体素子の製造方法。 - 前記電極を製造する段階は、前記突出領域の高さと前記突出領域の側面と対向する前記電極の長さを変更して、所望のキャパシタンスを設定する請求項6に記載の半導体素子の製造方法。
- 前記電極を製造する段階は、前記半導体本体の下面にドレインを形成する請求項6または7に記載の半導体素子の製造方法。
- 前記電極を製造する段階は、前記電極と前記ソースとが電気的に連結される請求項6から8の何れか1項に記載の半導体素子の製造方法。
- 前記電極を製造する段階は、前記ゲートの突出領域と前記電極との間に誘電体層を形成する請求項6から9の何れか1項に記載の半導体素子の製造方法。
- 前記ソース、前記ドレイン及び前記ゲートは、一つの金属酸化膜半導体電界効果トランジスタ(metal−oxide−semiconductor field−effect transistor;MOS FET)を形成する請求項8に記載の半導体素子の製造方法。
- 前記ゲートの前記突出領域の突出高さは、少なくとも前記突出領域の幅の0.5倍である請求項6から11の何れか1項に記載の半導体素子の製造方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020110141939A KR101250649B1 (ko) | 2011-12-26 | 2011-12-26 | 반도체 소자 및 이의 제조 방법 |
KR10-2011-0141939 | 2011-12-26 |
Publications (2)
Publication Number | Publication Date |
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JP2013135222A true JP2013135222A (ja) | 2013-07-08 |
JP5823371B2 JP5823371B2 (ja) | 2015-11-25 |
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JP2012271981A Expired - Fee Related JP5823371B2 (ja) | 2011-12-26 | 2012-12-13 | 半導体素子及びその製造方法 |
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US (1) | US20130161737A1 (ja) |
JP (1) | JP5823371B2 (ja) |
KR (1) | KR101250649B1 (ja) |
CN (1) | CN103178113B (ja) |
Families Citing this family (1)
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CN110504306B (zh) * | 2019-08-21 | 2022-11-04 | 江苏中科君芯科技有限公司 | 具有可调电容的沟槽栅igbt器件 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005203766A (ja) * | 2003-12-18 | 2005-07-28 | Toshiba Corp | 半導体集積回路装置 |
JP2006114834A (ja) * | 2004-10-18 | 2006-04-27 | Toshiba Corp | 半導体装置 |
JP2006120894A (ja) * | 2004-10-22 | 2006-05-11 | Toshiba Corp | 半導体装置 |
US20060220107A1 (en) * | 2005-03-18 | 2006-10-05 | Alpha & Omega Semiconductor, Ltd. | MOSFET with a second poly and an inter-poly dielectric layer over gate for synchronous rectification |
JP2007165380A (ja) * | 2005-12-09 | 2007-06-28 | Toshiba Corp | 半導体装置及びその製造方法 |
JP2011134985A (ja) * | 2009-12-25 | 2011-07-07 | Fuji Electric Co Ltd | トレンチゲート型半導体装置とその製造方法 |
Family Cites Families (5)
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KR100306910B1 (ko) | 1999-08-25 | 2001-11-01 | 김영환 | 모스 트랜지스터 제조방법 |
US6870220B2 (en) | 2002-08-23 | 2005-03-22 | Fairchild Semiconductor Corporation | Method and apparatus for improved MOS gating to reduce miller capacitance and switching losses |
KR20070073533A (ko) * | 2006-01-05 | 2007-07-10 | 주식회사 케이이씨 | 트랜지스터 및 그 제조 방법 |
KR100970282B1 (ko) * | 2007-11-19 | 2010-07-15 | 매그나칩 반도체 유한회사 | 트렌치 mosfet 및 그 제조방법 |
US7867852B2 (en) * | 2008-08-08 | 2011-01-11 | Alpha And Omega Semiconductor Incorporated | Super-self-aligned trench-dmos structure and method |
-
2011
- 2011-12-26 KR KR1020110141939A patent/KR101250649B1/ko active IP Right Grant
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2012
- 2012-08-17 CN CN201210295888.7A patent/CN103178113B/zh not_active Expired - Fee Related
- 2012-09-14 US US13/620,518 patent/US20130161737A1/en not_active Abandoned
- 2012-12-13 JP JP2012271981A patent/JP5823371B2/ja not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005203766A (ja) * | 2003-12-18 | 2005-07-28 | Toshiba Corp | 半導体集積回路装置 |
JP2006114834A (ja) * | 2004-10-18 | 2006-04-27 | Toshiba Corp | 半導体装置 |
JP2006120894A (ja) * | 2004-10-22 | 2006-05-11 | Toshiba Corp | 半導体装置 |
US20060220107A1 (en) * | 2005-03-18 | 2006-10-05 | Alpha & Omega Semiconductor, Ltd. | MOSFET with a second poly and an inter-poly dielectric layer over gate for synchronous rectification |
JP2007165380A (ja) * | 2005-12-09 | 2007-06-28 | Toshiba Corp | 半導体装置及びその製造方法 |
JP2011134985A (ja) * | 2009-12-25 | 2011-07-07 | Fuji Electric Co Ltd | トレンチゲート型半導体装置とその製造方法 |
Also Published As
Publication number | Publication date |
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JP5823371B2 (ja) | 2015-11-25 |
US20130161737A1 (en) | 2013-06-27 |
KR101250649B1 (ko) | 2013-04-03 |
CN103178113A (zh) | 2013-06-26 |
CN103178113B (zh) | 2016-06-08 |
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