JP4979212B2 - 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 claims description 36
- 238000005468 ion implantation Methods 0.000 claims description 32
- 238000000034 method Methods 0.000 claims description 31
- 239000012535 impurity Substances 0.000 claims description 30
- 238000000605 extraction Methods 0.000 claims description 16
- 230000001133 acceleration Effects 0.000 claims description 13
- 150000002500 ions Chemical class 0.000 claims 1
- 238000009792 diffusion process Methods 0.000 description 162
- 239000000758 substrate Substances 0.000 description 30
- 230000003071 parasitic effect Effects 0.000 description 25
- 238000006073 displacement reaction Methods 0.000 description 12
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 11
- 229910052796 boron Inorganic materials 0.000 description 11
- 229920002120 photoresistant polymer Polymers 0.000 description 11
- 238000000206 photolithography Methods 0.000 description 10
- -1 aluminum silicon copper Chemical compound 0.000 description 6
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 5
- 239000011574 phosphorus Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 230000005465 channeling Effects 0.000 description 4
- 238000002955 isolation Methods 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 229910052721 tungsten Inorganic materials 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- WNUPENMBHHEARK-UHFFFAOYSA-N silicon tungsten Chemical compound [Si].[W] WNUPENMBHHEARK-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000005360 phosphosilicate glass Substances 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 229910018594 Si-Cu Inorganic materials 0.000 description 1
- 229910008465 Si—Cu Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- SLLGVCUQYRMELA-UHFFFAOYSA-N chlorosilicon Chemical compound Cl[Si] SLLGVCUQYRMELA-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
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- Insulated Gate Type Field-Effect Transistor (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
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Description
2 P型の単結晶シリコン基板
4 N型のエピタキシャル層
5 P型の拡散層
6 P型の拡散層
7 N型の拡散層
8 N型の拡散層
10 ゲート電極
15 コンタクトホール
Claims (7)
- 半導体層と、前記半導体層に形成されるドレイン領域、一環状のソース領域及びバックゲート領域と、前記半導体層上面に形成されるゲート酸化膜と、前記ゲート酸化膜上に形成されるゲート電極と、前記半導体層上面に形成される絶縁層と、前記ドレイン領域、前記ソース領域または前記ゲート電極上の前記絶縁層に形成されたコンタクトホールとを有する半導体装置において、
前記バックゲート領域内には、前記ソース領域及びバックゲート引き出し領域が形成され、前記バックゲート引き出し領域は、前記ソース領域上のコンタクトホールの開口形状に合わせて、前記ソース領域よりも深部まで形成され、且つ、前記バックゲート引き出し領域は、前記ソース領域に囲まれている領域より、前記ソース領域の深部に形成されている領域の方が広い領域に渡り形成され、
前記ソース領域と前記ドレイン領域との間に配置される前記バックゲート領域がチャネル領域として用いられることを特徴とする半導体装置。 - 前記ソース領域は前記半導体層表面から1.0μm以下の深さまで形成されており、前記バックゲート引き出し領域は前記半導体層表面から1.5μm以下の深さまで形成されていることを特徴とする請求項1に記載の半導体装置。
- 半導体層にバックゲート領域、ドレイン領域を形成し、前記半導体層上にゲート酸化膜及びゲート電極を形成する工程と、
前記バックゲート領域内の所望の領域上にレジストマスクを被覆した状態でイオン注入を行い、前記レジストマスクを囲むように前記バックゲート領域内にソース領域を形成し、前記ソース領域と前記ドレイン領域との間の前記バックゲート領域をチャネル領域とする工程と、
前記半導体層上面に絶縁層を形成し、前記バックゲート領域上面であり、前記ソース領域に囲まれた領域が露出するように、前記絶縁層にソース電極用のコンタクトホールを形成する工程と、
前記ソース電極用のコンタクトホールを介して前記バックゲート領域にイオン注入を行い、前記ソース領域に囲まれた領域及び前記ソース領域よりも深部まで拡散するバックゲート引き出し領域を前記バックゲート領域内に形成する工程とを有することを特徴とする半導体装置の製造方法。 - 前記バックゲート引き出し領域を形成する工程では、イオン注入条件の異なる2回のイオン注入工程を行い、1回目の不純物の導入量は2回目の不純物の導入量よりも多いことを特徴とする請求項3に記載の半導体装置の製造方法。
- 前記バックゲート引き出し領域を形成する工程では、1回目の不純物の導入量は、前記バックゲート引き出し領域と前記ソース領域とが重畳する領域が前記ソース領域となる条件であることを特徴とする請求項4に記載の半導体装置の製造方法。
- 前記バックゲート引き出し領域を形成する工程では、1回目の加速電圧は不純物が前記ソース領域を突き抜けない条件であることを特徴とする請求項4または請求項5に記載の半導体装置の製造方法。
- 前記バックゲート引き出し領域を形成する工程では、2回目の加速電圧は不純物が前記ソース領域を突き抜ける条件であり、前記ソース領域より深部に前記コンタクトホールの開口部形状の前記バックゲート引き出し領域を形成することを特徴とする請求項4から請求項6のいずれか1項に記載の半導体装置の製造方法。
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JP2005250499A JP4979212B2 (ja) | 2005-08-31 | 2005-08-31 | 半導体装置及びその製造方法 |
TW095116015A TW200735187A (en) | 2005-08-31 | 2006-05-05 | Semiconductor device and manufacturing method thereof |
CN200610094174.4A CN1925168A (zh) | 2005-08-31 | 2006-06-27 | 半导体装置及其制造方法 |
US11/504,443 US7391069B2 (en) | 2005-08-31 | 2006-08-11 | Semiconductor device and manufacturing method thereof |
KR1020060080424A KR100787282B1 (ko) | 2005-08-31 | 2006-08-24 | 반도체 장치 및 그 제조 방법 |
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JP5700649B2 (ja) * | 2011-01-24 | 2015-04-15 | 旭化成エレクトロニクス株式会社 | 半導体装置の製造方法 |
JP5702460B2 (ja) * | 2011-03-18 | 2015-04-15 | ルネサスエレクトロニクス株式会社 | 半導体装置およびその製造方法 |
CN105723505B (zh) | 2014-05-14 | 2019-03-08 | 富士电机株式会社 | 半导体装置及半导体装置的制造方法 |
CN104658913B (zh) * | 2015-02-10 | 2017-12-05 | 上海华虹宏力半导体制造有限公司 | Nldmos的制造方法 |
CN109216462A (zh) * | 2018-09-04 | 2019-01-15 | 深圳市福来过科技有限公司 | 半导体器件及其制备方法 |
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JP2002026328A (ja) | 2000-07-04 | 2002-01-25 | Toshiba Corp | 横型半導体装置 |
JP5183835B2 (ja) * | 2000-11-02 | 2013-04-17 | ローム株式会社 | 半導体装置およびその製造方法 |
JP2002314065A (ja) * | 2001-04-13 | 2002-10-25 | Sanyo Electric Co Ltd | Mos半導体装置およびその製造方法 |
JP2002314066A (ja) * | 2001-04-13 | 2002-10-25 | Sanyo Electric Co Ltd | Mos半導体装置およびその製造方法 |
KR100456691B1 (ko) * | 2002-03-05 | 2004-11-10 | 삼성전자주식회사 | 이중격리구조를 갖는 반도체 소자 및 그 제조방법 |
JP2004335633A (ja) * | 2003-05-06 | 2004-11-25 | Toshiba Lsi System Support Kk | 半導体集積回路 |
JP2005158952A (ja) * | 2003-11-25 | 2005-06-16 | Toshiba Corp | 半導体装置及びその製造方法 |
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2005
- 2005-08-31 JP JP2005250499A patent/JP4979212B2/ja not_active Expired - Fee Related
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2006
- 2006-05-05 TW TW095116015A patent/TW200735187A/zh not_active IP Right Cessation
- 2006-06-27 CN CN200610094174.4A patent/CN1925168A/zh active Pending
- 2006-08-11 US US11/504,443 patent/US7391069B2/en active Active
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KR20070026037A (ko) | 2007-03-08 |
US20070052016A1 (en) | 2007-03-08 |
US7391069B2 (en) | 2008-06-24 |
TWI297913B (ja) | 2008-06-11 |
TW200735187A (en) | 2007-09-16 |
KR100787282B1 (ko) | 2007-12-20 |
JP2007067127A (ja) | 2007-03-15 |
CN1925168A (zh) | 2007-03-07 |
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