JP5108250B2 - 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 description 78
- 238000004519 manufacturing process Methods 0.000 title claims description 31
- 238000009792 diffusion process Methods 0.000 claims description 239
- 239000000758 substrate Substances 0.000 claims description 62
- 238000002955 isolation Methods 0.000 claims description 59
- 230000015572 biosynthetic process Effects 0.000 claims description 45
- 230000015556 catabolic process Effects 0.000 claims description 45
- 238000000034 method Methods 0.000 claims description 35
- 238000000638 solvent extraction Methods 0.000 claims description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 33
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 30
- 229910052814 silicon oxide Inorganic materials 0.000 description 30
- 239000012535 impurity Substances 0.000 description 29
- 238000000206 photolithography Methods 0.000 description 17
- 230000001133 acceleration Effects 0.000 description 11
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 9
- 229910052796 boron Inorganic materials 0.000 description 9
- 238000005468 ion implantation Methods 0.000 description 9
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 7
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 6
- 229920005591 polysilicon Polymers 0.000 description 6
- 238000000926 separation method Methods 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 229910052787 antimony Inorganic materials 0.000 description 4
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- WNUPENMBHHEARK-UHFFFAOYSA-N silicon tungsten Chemical compound [Si].[W] WNUPENMBHHEARK-UHFFFAOYSA-N 0.000 description 4
- 239000012808 vapor phase Substances 0.000 description 4
- -1 for example Substances 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
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910008465 Si—Cu Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006378 damage Effects 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
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000005360 phosphosilicate glass Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 238000004528 spin coating Methods 0.000 description 2
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 2
- 229910021342 tungsten silicide Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
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- H01L27/0203—Particular design considerations for integrated circuits
- H01L27/0248—Particular design considerations for integrated circuits for electrical or thermal protection, e.g. electrostatic discharge [ESD] protection
- H01L27/0251—Particular design considerations for integrated circuits for electrical or thermal protection, e.g. electrostatic discharge [ESD] protection for MOS devices
- H01L27/0259—Particular design considerations for integrated circuits for electrical or thermal protection, e.g. electrostatic discharge [ESD] protection for MOS devices using bipolar transistors as protective elements
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- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66568—Lateral single gate silicon transistors
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
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- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66674—DMOS transistors, i.e. MISFETs with a channel accommodating body or base region adjoining a drain drift region
- H01L29/66681—Lateral DMOS transistors, i.e. LDMOS transistors
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- 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
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- 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
- H01L29/7817—Lateral DMOS transistors, i.e. LDMOS transistors structurally associated with at least one other device
- H01L29/7821—Lateral DMOS transistors, i.e. LDMOS transistors structurally associated with at least one other device the other device being a breakdown diode, e.g. Zener diode
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
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- H01L29/08—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/0843—Source or drain regions of field-effect devices
- H01L29/0847—Source or drain regions of field-effect devices of field-effect transistors with insulated gate
- H01L29/0852—Source or drain regions of field-effect devices of field-effect transistors with insulated gate of DMOS transistors
- H01L29/0873—Drain regions
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/10—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/107—Substrate region of field-effect devices
- H01L29/1075—Substrate region of field-effect devices of field-effect transistors
- H01L29/1079—Substrate region of field-effect devices of field-effect transistors with insulated gate
- H01L29/1083—Substrate region of field-effect devices of field-effect transistors with insulated gate with an inactive supplementary region, e.g. for preventing punch-through, improving capacity effect or leakage current
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Semiconductor Integrated Circuits (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Element Separation (AREA)
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
4 分離領域
5 分離領域
32 PN接合領域
33 PN接合領域
34 PN接合領域
35 PN接合領域
71 Pチャネル型MOSトランジスタ
Claims (12)
- 一導電型の半導体基板上に積層された1層または複数層の逆導電型のエピタキシャル層と、
前記エピタキシャル層を区画する分離領域と、
前記分離領域で区画された一領域の前記エピタキシャル層に形成されたMOSトランジスタと、
前記MOSトランジスタを構成する拡散層と前記エピタキシャル層との第1の接合領域と、
前記一領域を囲む前記分離領域を利用し、前記一領域内に形成され、前記第1の接合領域の接合耐圧よりも低い第2の接合領域を有する保護素子とを有することを特徴とする半導体装置。 - 前記第2の接合領域は、前記MOSトランジスタのバックゲート領域として用いられる拡散層と配線接続する第1の一導電型の拡散層と前記エピタキシャル層に形成された逆導電型の拡散層とにより形成され、
前記逆導電型の拡散層は、前記半導体基板と接続する第2の一導電型の拡散層と重畳して配置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。 - 前記第2の一導電型の拡散層は、前記分離領域を構成する拡散層であることを特徴とする請求項2に記載の半導体装置。
- 前記第1の一導電型の拡散層及び前記逆導電型の拡散層は、前記分離領域の形成領域に合わせて、前記MOSトランジスタの形成領域の周囲に一環状に配置されていることを特徴とする請求項3に記載の半導体装置。
- 前記保護素子は、バイポーラトランジスタ動作することを特徴とする請求項1または請求項2に記載の半導体装置。
- 前記第2の接合領域は、前記MOSトランジスタのドレイン領域として用いられる拡散層と配線接続する第1の一導電型の拡散層と前記エピタキシャル層に形成された逆導電型の拡散層とにより形成され、
前記逆導電型の拡散層は、前記半導体基板と接続する第2の一導電型の拡散層と重畳して配置されていることを特徴とする請求項2に記載の半導体装置。 - 前記第2の一導電型の拡散層は、前記分離領域を構成する拡散層であることを特徴とする請求項6に記載の半導体装置。
- 前記第1の一導電型の拡散層及び前記逆導電型の拡散層は、前記分離領域の形成領域に合わせて、前記MOSトランジスタの形成領域の周囲に一環状に配置されていることを特徴とする請求項7に記載の半導体装置。
- 前記保護素子は、バイポーラトランジスタ動作することを特徴とする請求項6に記載の半導体装置。
- 一導電型の半導体基板上に1層または複数層の逆導電型のエピタキシャル層を形成し、前記エピタキシャル層を複数の素子形成領域に区分する分離領域を形成し、前記複数の素子形成領域の一領域にMOSトランジスタを形成する半導体装置の製造方法において、
前記一領域内の前記MOSトランジスタの形成領域の周囲に第1の一導電型の拡散層を形成し、前記第1の一導電型の拡散層及び前記分離領域を構成する第2の一導電型の拡散層のそれぞれとその一部の領域を重畳させる逆導電型の拡散層を形成し、
前記エピタキシャル層上で前記MOSトランジスタのバックゲート領域としての拡散層と前記第1の一導電型の拡散層とを配線層により接続することを特徴とする半導体装置の製造方法。 - 前記MOSトランジスタのバックゲート領域としての拡散層と前記第1の一導電型の拡散層とを共用工程で形成することを特徴とする請求項10に記載の半導体装置の製造方法。
- 一導電型の半導体基板上に1層または複数層の逆導電型のエピタキシャル層を形成し、前記エピタキシャル層を複数の素子形成領域に区分する分離領域を形成し、前記複数の素子形成領域の一領域にMOSトランジスタを形成する半導体装置の製造方法において、
前記一領域内の前記MOSトランジスタの形成領域の周囲に第1の一導電型の拡散層を形成し、前記第1の一導電型の拡散層及び前記分離領域を構成する第2の一導電型の拡散層のそれぞれとその一部の領域を重畳させる逆導電型の拡散層を形成し、
前記エピタキシャル層上で前記MOSトランジスタのドレイン領域としての拡散層と前記第1の一導電型の拡散層とを配線層により接続することを特徴とする半導体装置の製造方法。
Priority Applications (5)
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JP2006119652A JP5108250B2 (ja) | 2006-04-24 | 2006-04-24 | 半導体装置及びその製造方法 |
TW095149755A TWI343651B (en) | 2006-04-24 | 2006-12-29 | Semiconductor device and manufacturing method of the same |
CN2007100067603A CN101064305B (zh) | 2006-04-24 | 2007-02-06 | 半导体装置及其制造方法 |
KR1020070037330A KR100852303B1 (ko) | 2006-04-24 | 2007-04-17 | 반도체 장치 및 그 제조 방법 |
US11/738,621 US7906811B2 (en) | 2006-04-24 | 2007-04-23 | Semiconductor device with protection element disposed around a formation region of a transistor |
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JP2006119652A JP5108250B2 (ja) | 2006-04-24 | 2006-04-24 | 半導体装置及びその製造方法 |
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JP5108250B2 true JP5108250B2 (ja) | 2012-12-26 |
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JP (1) | JP5108250B2 (ja) |
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US7932580B2 (en) * | 2006-12-21 | 2011-04-26 | Sanyo Electric Co., Ltd. | Semiconductor device and method of manufacturing the same |
JP4609907B2 (ja) * | 2008-05-22 | 2011-01-12 | ルネサスエレクトロニクス株式会社 | 半導体集積回路 |
US8237832B2 (en) * | 2008-05-30 | 2012-08-07 | Omnivision Technologies, Inc. | Image sensor with focusing interconnections |
JP5525736B2 (ja) * | 2009-02-18 | 2014-06-18 | 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 | 半導体装置及びその製造方法 |
US8749016B2 (en) * | 2010-10-06 | 2014-06-10 | Macronix International Co., Ltd. | High voltage MOS device and method for making the same |
JP5662108B2 (ja) * | 2010-11-05 | 2015-01-28 | 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 |
JP6176817B2 (ja) | 2011-10-17 | 2017-08-09 | ローム株式会社 | チップダイオードおよびダイオードパッケージ |
US8853783B2 (en) * | 2012-01-19 | 2014-10-07 | Globalfoundries Singapore Pte. Ltd. | ESD protection circuit |
JP6011136B2 (ja) | 2012-08-09 | 2016-10-19 | 富士電機株式会社 | 半導体装置 |
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KR100852303B1 (ko) | 2008-08-18 |
JP2007294614A (ja) | 2007-11-08 |
KR20070104833A (ko) | 2007-10-29 |
US7906811B2 (en) | 2011-03-15 |
CN101064305A (zh) | 2007-10-31 |
TW200742066A (en) | 2007-11-01 |
TWI343651B (en) | 2011-06-11 |
US20070246738A1 (en) | 2007-10-25 |
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