JP2008010628A - 半導体装置及びその製造方法 - Google Patents
半導体装置及びその製造方法 Download PDFInfo
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- JP2008010628A JP2008010628A JP2006179390A JP2006179390A JP2008010628A JP 2008010628 A JP2008010628 A JP 2008010628A JP 2006179390 A JP2006179390 A JP 2006179390A JP 2006179390 A JP2006179390 A JP 2006179390A JP 2008010628 A JP2008010628 A JP 2008010628A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 67
- 238000004519 manufacturing process Methods 0.000 title claims description 35
- 239000012535 impurity Substances 0.000 claims abstract description 63
- WNUPENMBHHEARK-UHFFFAOYSA-N silicon tungsten Chemical compound [Si].[W] WNUPENMBHHEARK-UHFFFAOYSA-N 0.000 claims description 25
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 23
- 229920005591 polysilicon Polymers 0.000 claims description 23
- 230000001133 acceleration Effects 0.000 claims description 16
- 238000005468 ion implantation Methods 0.000 claims description 10
- 238000009792 diffusion process Methods 0.000 abstract description 120
- 230000003071 parasitic effect Effects 0.000 abstract description 32
- 230000015556 catabolic process Effects 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 176
- 238000000034 method Methods 0.000 description 21
- 239000000758 substrate Substances 0.000 description 16
- 229920002120 photoresistant polymer Polymers 0.000 description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 12
- 229910052814 silicon oxide Inorganic materials 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
- 238000000206 photolithography Methods 0.000 description 8
- 239000000969 carrier Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 6
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910018125 Al-Si Inorganic materials 0.000 description 2
- 229910018182 Al—Cu Inorganic materials 0.000 description 2
- 229910018520 Al—Si Inorganic materials 0.000 description 2
- 229910018594 Si-Cu Inorganic materials 0.000 description 2
- 229910008465 Si—Cu Inorganic materials 0.000 description 2
- 229910052787 antimony Inorganic materials 0.000 description 2
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000005360 phosphosilicate glass Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/64—Double-diffused metal-oxide semiconductor [DMOS] FETs
- H10D30/65—Lateral DMOS [LDMOS] FETs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/01—Manufacture or treatment
- H10D30/021—Manufacture or treatment of FETs having insulated gates [IGFET]
- H10D30/028—Manufacture or treatment of FETs having insulated gates [IGFET] of double-diffused metal oxide semiconductor [DMOS] FETs
- H10D30/0281—Manufacture or treatment of FETs having insulated gates [IGFET] of double-diffused metal oxide semiconductor [DMOS] FETs of lateral DMOS [LDMOS] FETs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/17—Semiconductor regions connected to electrodes not carrying current to be rectified, amplified or switched, e.g. channel regions
- H10D62/393—Body regions of DMOS transistors or IGBTs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/13—Semiconductor regions connected to electrodes carrying current to be rectified, amplified or switched, e.g. source or drain regions
- H10D62/149—Source or drain regions of field-effect devices
- H10D62/151—Source or drain regions of field-effect devices of IGFETs
- H10D62/156—Drain regions of DMOS transistors
- H10D62/157—Impurity concentrations or distributions
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/20—Electrodes characterised by their shapes, relative sizes or dispositions
- H10D64/27—Electrodes not carrying the current to be rectified, amplified, oscillated or switched, e.g. gates
- H10D64/311—Gate electrodes for field-effect devices
- H10D64/411—Gate electrodes for field-effect devices for FETs
- H10D64/511—Gate electrodes for field-effect devices for FETs for IGFETs
- H10D64/514—Gate electrodes for field-effect devices for FETs for IGFETs characterised by the insulating layers
- H10D64/516—Gate electrodes for field-effect devices for FETs for IGFETs characterised by the insulating layers the thicknesses being non-uniform
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/20—Electrodes characterised by their shapes, relative sizes or dispositions
- H10D64/27—Electrodes not carrying the current to be rectified, amplified, oscillated or switched, e.g. gates
- H10D64/311—Gate electrodes for field-effect devices
- H10D64/411—Gate electrodes for field-effect devices for FETs
- H10D64/511—Gate electrodes for field-effect devices for FETs for IGFETs
- H10D64/517—Gate electrodes for field-effect devices for FETs for IGFETs characterised by the conducting layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D64/00—Electrodes of devices having potential barriers
- H10D64/60—Electrodes characterised by their materials
- H10D64/66—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes
- H10D64/661—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon having vertical doping variation
- H10D64/662—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon having vertical doping variation the conductor further comprising additional layers, e.g. multiple silicon layers having different crystal structures
- H10D64/663—Electrodes having a conductor capacitively coupled to a semiconductor by an insulator, e.g. MIS electrodes the conductor comprising a layer of silicon contacting the insulator, e.g. polysilicon having vertical doping variation the conductor further comprising additional layers, e.g. multiple silicon layers having different crystal structures the additional layers comprising a silicide layer contacting the layer of silicon, e.g. polycide gates
Landscapes
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
【解決手段】本発明の半導体装置、例えば、MOSトランジスタでは、N型のエピタキシャル層3には、バックゲート領域としてのP型の拡散層5が形成されている。P型の拡散層5には、ソース領域としてのN型の拡散層7、8が形成されている。P型の拡散層5は、N型の拡散層7、8よりも深部に不純物濃度ピークを有するように形成されている。この構造により、寄生トランジスタのベース領域での抵抗値が低減し、MOSトランジスタ1のベース領域での電位上昇が抑制され、寄生トランジスタ動作が抑止される。そして、寄生トランジスタ動作に起因するMOSトランジスタ1の破壊耐量を向上させることができる。
【選択図】図1
Description
2 P型の単結晶シリコン基板
3 N型のエピタキシャル層
5 P型の拡散層
8 N型の拡散層
9 N型の拡散層
11 ゲート電極
12 ゲート電極
14 ポリシリコン膜
15 タングステンシリコン膜
Claims (6)
- 半導体層と、前記半導体層に形成されるドレイン領域、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を有する半導体装置において、
前記バックゲート領域には前記ソース領域が重畳して形成されており、前記バックゲート領域の不純物濃度のピークは、前記バックゲート領域と前記ソース領域との接合領域よりも前記半導体層の深部に形成されていることを特徴とする半導体装置。 - 前記接合領域近傍の前記バックゲート領域の不純物濃度では、前記ソース領域底面近傍の不純物濃度が、前記ソース領域の表面近傍の不純物濃度に対し3倍以上であることを特徴とする請求項1に記載の半導体装置。
- 前記ゲート電極は、ポリシリコン膜とタングステンシリコン膜とから形成され、前記タングステンシリコン膜の膜厚は前記ポリシリコン膜の膜厚よりも厚いことを特徴とする請求項1に記載の半導体装置。
- 半導体層上にゲート酸化膜及びゲート電極を形成した後、前記ゲート電極を用いたセルファラインにより、前記半導体層にバックゲート領域を形成する工程と、
前記バックゲート領域に重畳するようにソース領域を形成し、前記半導体層にドレイン領域を形成する工程とを有し、
前記バックゲート領域を形成する工程では、前記バックゲート領域の不純物濃度のピークを前記バックゲート領域と前記ソース領域との接合領域よりも前記半導体層の深部に形成することを特徴とする半導体装置の製造方法。 - 前記バックゲート領域を形成する工程では、加速電圧が60〜90(keV)のイオン注入工程を有す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。
- 前記ゲート電極を形成する工程では、ポリシリコン膜上にタングステンシリコン膜を堆積させ、前記タングステンシリコン膜の膜厚を前記ポリシリコン膜の膜厚よりも厚くす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。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006179390A JP2008010628A (ja) | 2006-06-29 | 2006-06-29 | 半導体装置及びその製造方法 |
US11/770,251 US20080001185A1 (en) | 2006-06-29 | 2007-06-28 | Semiconductor device and method of manufacturing the same |
CNA2007101263470A CN101097959A (zh) | 2006-06-29 | 2007-06-29 | 半导体装置及其制造方法 |
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JP2006179390A JP2008010628A (ja) | 2006-06-29 | 2006-06-29 | 半導体装置及びその製造方法 |
Publications (1)
Publication Number | Publication Date |
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JP2008010628A true JP2008010628A (ja) | 2008-01-17 |
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JP2006179390A Pending JP2008010628A (ja) | 2006-06-29 | 2006-06-29 | 半導体装置及びその製造方法 |
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Country | Link |
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US (1) | US20080001185A1 (ja) |
JP (1) | JP2008010628A (ja) |
CN (1) | CN101097959A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20140012123A (ko) | 2011-03-18 | 2014-01-29 | 르네사스 일렉트로닉스 가부시키가이샤 | 반도체장치 및 그 제조방법 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7987754B2 (en) * | 2007-07-31 | 2011-08-02 | Newell Window Furnishings, Inc. | Window covering sizing method and apparatus |
JP5713611B2 (ja) * | 2010-09-09 | 2015-05-07 | セミコンダクター・コンポーネンツ・インダストリーズ・リミテッド・ライアビリティ・カンパニー | 半導体装置 |
CN111668311B (zh) * | 2020-05-25 | 2021-08-24 | 江苏东海半导体科技有限公司 | 一种mosfet芯片版图结构 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09134965A (ja) * | 1995-09-08 | 1997-05-20 | Matsushita Electric Ind Co Ltd | 半導体装置及びその製造方法 |
JP2000077532A (ja) * | 1998-09-03 | 2000-03-14 | Mitsubishi Electric Corp | 半導体装置およびその製造方法 |
JP2000196072A (ja) * | 1998-12-25 | 2000-07-14 | Mitsubishi Electric Corp | 半導体装置およびその製造方法 |
JP2002141502A (ja) * | 2000-11-02 | 2002-05-17 | Rohm Co Ltd | 半導体装置およびその製造方法 |
JP2006165145A (ja) * | 2004-12-06 | 2006-06-22 | Matsushita Electric Ind Co Ltd | 横型半導体デバイスおよびその製造方法 |
-
2006
- 2006-06-29 JP JP2006179390A patent/JP2008010628A/ja active Pending
-
2007
- 2007-06-28 US US11/770,251 patent/US20080001185A1/en not_active Abandoned
- 2007-06-29 CN CNA2007101263470A patent/CN101097959A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09134965A (ja) * | 1995-09-08 | 1997-05-20 | Matsushita Electric Ind Co Ltd | 半導体装置及びその製造方法 |
JP2000077532A (ja) * | 1998-09-03 | 2000-03-14 | Mitsubishi Electric Corp | 半導体装置およびその製造方法 |
JP2000196072A (ja) * | 1998-12-25 | 2000-07-14 | Mitsubishi Electric Corp | 半導体装置およびその製造方法 |
JP2002141502A (ja) * | 2000-11-02 | 2002-05-17 | Rohm Co Ltd | 半導体装置およびその製造方法 |
JP2006165145A (ja) * | 2004-12-06 | 2006-06-22 | Matsushita Electric Ind Co Ltd | 横型半導体デバイスおよびその製造方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20140012123A (ko) | 2011-03-18 | 2014-01-29 | 르네사스 일렉트로닉스 가부시키가이샤 | 반도체장치 및 그 제조방법 |
US8963199B2 (en) | 2011-03-18 | 2015-02-24 | Renesas Electronics Corporation | Semiconductor device and method for manufacturing same |
US9257551B2 (en) | 2011-03-18 | 2016-02-09 | Renesas Electronics Corporation | Semiconductor device and method for manufacturing same |
Also Published As
Publication number | Publication date |
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CN101097959A (zh) | 2008-01-02 |
US20080001185A1 (en) | 2008-01-03 |
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