JP2007095827A - 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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- 239000004065 semiconductor Substances 0.000 title claims abstract description 63
- 238000004519 manufacturing process Methods 0.000 title claims description 17
- 238000009792 diffusion process Methods 0.000 claims abstract description 277
- 239000000758 substrate Substances 0.000 claims abstract description 37
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 31
- 239000012535 impurity Substances 0.000 claims description 56
- 238000002955 isolation Methods 0.000 claims description 50
- 238000000034 method Methods 0.000 claims description 16
- 238000005192 partition Methods 0.000 claims description 2
- 229910021421 monocrystalline silicon Inorganic materials 0.000 abstract description 9
- 238000000926 separation method Methods 0.000 abstract description 8
- 238000000206 photolithography 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
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000002184 metal Substances 0.000 description 10
- 229920002120 photoresistant polymer Polymers 0.000 description 10
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 9
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 9
- 229920005591 polysilicon Polymers 0.000 description 9
- 229910052814 silicon oxide Inorganic materials 0.000 description 9
- 230000004888 barrier function Effects 0.000 description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- 230000015556 catabolic process Effects 0.000 description 6
- -1 for example Substances 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 6
- 229910052721 tungsten Inorganic materials 0.000 description 6
- 239000010937 tungsten Substances 0.000 description 6
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 6
- 229910021342 tungsten silicide Inorganic materials 0.000 description 6
- 229910052581 Si3N4 Inorganic materials 0.000 description 5
- 230000001133 acceleration Effects 0.000 description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 229910018182 Al—Cu Inorganic materials 0.000 description 3
- 229910018594 Si-Cu Inorganic materials 0.000 description 3
- 229910008465 Si—Cu Inorganic materials 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000005468 ion implantation Methods 0.000 description 3
- 238000001312 dry etching Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000005360 phosphosilicate glass Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 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
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 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
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/76—Making of isolation regions between components
- H01L21/761—PN junctions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/823481—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type isolation region manufacturing related aspects, e.g. to avoid interaction of isolation region with adjacent structure
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/08—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind
- H01L27/085—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only
- H01L27/088—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/45—Ohmic electrodes
- H01L29/456—Ohmic electrodes on silicon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7801—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/7816—Lateral DMOS transistors, i.e. LDMOS transistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7833—Field effect transistors with field effect produced by an insulated gate with lightly doped drain or source extension, e.g. LDD MOSFET's; DDD MOSFET's
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Element Separation (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
【解決手段】P型の単結晶シリコン基板6上にN型のエピタキシャル層8が形成されている。基板6及びエピタキシャル層8は、分離領域3により複数の素子形成領域に区画されている。分離領域3は、P型の埋込拡散層とP型の拡散層とが連結して形成されている。そして、P型の埋込拡散層は、N型の埋込拡散層7、30とPN接合領域を形成している。一方、P型の拡散層は、N型の拡散層19、40とPN接合領域を形成している。
【選択図】 図1
Description
2 Nチャネル型LDMOSトランジスタ
3 分離領域
6 P型の単結晶シリコン基板
7 N型の埋込拡散層
8 N型のエピタキシャル層
19 N型の拡散層
30 N型の埋込拡散層
40 N型の拡散層
47 P型の埋込拡散層
48 P型の拡散層
49 P型の拡散層
50 P型の拡散層
Claims (5)
- 半導体層を複数の素子形成領域へと区画する分離領域と、
一方の前記素子形成領域に形成された第1の半導体素子と、
前記一方の素子形成領域に隣接し、他方の前記素子形成領域に形成された第2の半導体素子とを有し、
前記一方の素子形成領域と前記他方の素子形成領域との間に位置する前記分離領域は、複数の第1の導電型の拡散層が連結して形成され、
前記第1の導電型の拡散層のそれぞれは、前記第1の半導体素子を構成する第2の導電型の拡散層及び前記第2の半導体素子を形成する第2の導電型の拡散層とPN接合領域を形成していることを特徴とする半導体装置。 - 前記分離領域を構成し、前記半導体層表面から形成されている第1の導電型の拡散層は、不純物濃度の異なる複数の拡散層が重畳して形成され、最も不純物濃度の低い拡散層により前記PN接合領域を形成していることを特徴とする請求項1に記載の半導体装置。
- 前記半導体層表面から形成されている第1の導電型の拡散層は、その中心部へ向かう程不純物濃度が高くなるように、前記複数の拡散層が重畳していることを特徴とする請求項2に記載の半導体装置。
- 第1の導電型の半導体基板を準備し、前記基板に分離領域用の第1の導電型の埋込拡散層及び半導体素子用の第2の導電型の埋込拡散層を形成し、前記基板上に第2の導電型のエピタキシャル層を形成した後、
前記エピタキシャル層表面から前記分離領域用の第1の導電型の拡散層及び前記半導体素子用の第2の導電型の拡散層とを形成する半導体装置の製造方法において、
前記第1の導電型の埋込拡散層と前記第2の導電型の埋込拡散層とによりPN接合領域を形成することで、前記第2の導電型の埋込拡散層により前記第1の導電型の埋込拡散層の横方向拡散を抑制し、
前記第1の導電型の拡散層と前記第2の導電型の拡散層とによりPN接合領域を形成することで、前記第2の導電型の拡散層により前記第1の導電型の拡散層の横方向拡散を抑制することを特徴とする半導体装置の製造方法。 - 前記第1の導電型の拡散層は、不純物濃度の異なる複数の拡散層を重畳させ、最も不純物濃度の低い拡散層を最も幅広く形成し、前記第2の導電型の拡散層とPN接合領域を形成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 (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005280520A JP2007095827A (ja) | 2005-09-27 | 2005-09-27 | 半導体装置及びその製造方法 |
TW095134934A TW200713493A (en) | 2005-09-27 | 2006-09-21 | Semiconductor device and manufacturing method thereof |
CNB2006101270376A CN100454545C (zh) | 2005-09-27 | 2006-09-21 | 半导体装置及其制造方法 |
US11/526,869 US7485922B2 (en) | 2005-09-27 | 2006-09-26 | Isolation structure for semiconductor device including double diffusion isolation region forming PN junction with neighboring wells and isolation region beneath |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2005280520A JP2007095827A (ja) | 2005-09-27 | 2005-09-27 | 半導体装置及びその製造方法 |
Publications (1)
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JP2007095827A true JP2007095827A (ja) | 2007-04-12 |
Family
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Application Number | Title | Priority Date | Filing Date |
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JP2005280520A Pending JP2007095827A (ja) | 2005-09-27 | 2005-09-27 | 半導体装置及びその製造方法 |
Country Status (4)
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US (1) | US7485922B2 (ja) |
JP (1) | JP2007095827A (ja) |
CN (1) | CN100454545C (ja) |
TW (1) | TW200713493A (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010177317A (ja) * | 2009-01-28 | 2010-08-12 | Sanyo Electric Co Ltd | 半導体装置 |
JP2010528452A (ja) * | 2007-02-28 | 2010-08-19 | フリースケール セミコンダクター インコーポレイテッド | 分離電圧の性能が向上したマイクロ電子アセンブリおよびその形成方法 |
JP2011003720A (ja) * | 2009-06-18 | 2011-01-06 | Nec Corp | 半導体受光装置及びその製造方法 |
CN107017305A (zh) * | 2016-01-28 | 2017-08-04 | 德州仪器公司 | Soi电力ldmos装置 |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2007081009A (ja) * | 2005-09-13 | 2007-03-29 | Matsushita Electric Ind Co Ltd | 駆動回路およびデータ線ドライバ |
US8558307B2 (en) * | 2007-12-18 | 2013-10-15 | Sanyo Semiconductor Co., Ltd. | Semiconductor device with diffused MOS transistor and manufacturing method of the same |
KR101463076B1 (ko) * | 2008-03-28 | 2014-12-05 | 페어차일드코리아반도체 주식회사 | 레벨 시프트 소자들을 구비하는 고압 반도체소자 및 그의제조방법 |
US7589359B1 (en) * | 2008-07-25 | 2009-09-15 | United Microelectronics Corp. | Silicon controlled rectifier |
US8026549B2 (en) * | 2008-10-31 | 2011-09-27 | United Microelectronics Corp. | LDMOS with N-type isolation ring and method of fabricating the same |
US8138049B2 (en) * | 2009-05-29 | 2012-03-20 | Silergy Technology | Fabrication of lateral double-diffused metal oxide semiconductor (LDMOS) devices |
KR101302109B1 (ko) | 2011-10-14 | 2013-09-02 | 주식회사 동부하이텍 | 반도체 소자와 그 제조 방법 |
US9799766B2 (en) | 2013-02-20 | 2017-10-24 | Taiwan Semiconductor Manufacturing Company, Ltd. | High voltage transistor structure and method |
US20150129977A1 (en) * | 2013-11-08 | 2015-05-14 | United Microelectronics Corporation | Semiconductor electrostatic discharge protection apparatus |
JP6673806B2 (ja) * | 2016-11-15 | 2020-03-25 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
CN106847880B (zh) | 2017-01-23 | 2019-11-26 | 矽力杰半导体技术(杭州)有限公司 | 一种半导体器件及其制备方法 |
CN107871787B (zh) | 2017-10-11 | 2021-10-12 | 矽力杰半导体技术(杭州)有限公司 | 一种制造沟槽mosfet的方法 |
CN110047759A (zh) | 2019-04-28 | 2019-07-23 | 矽力杰半导体技术(杭州)有限公司 | 沟槽型mosfet器件制造方法 |
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2005
- 2005-09-27 JP JP2005280520A patent/JP2007095827A/ja active Pending
-
2006
- 2006-09-21 TW TW095134934A patent/TW200713493A/zh not_active IP Right Cessation
- 2006-09-21 CN CNB2006101270376A patent/CN100454545C/zh not_active Expired - Fee Related
- 2006-09-26 US US11/526,869 patent/US7485922B2/en active Active
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Also Published As
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TWI331373B (ja) | 2010-10-01 |
US7485922B2 (en) | 2009-02-03 |
TW200713493A (en) | 2007-04-01 |
US20070075363A1 (en) | 2007-04-05 |
CN100454545C (zh) | 2009-01-21 |
CN1941373A (zh) | 2007-04-04 |
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