JP2008166570A - 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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- JP2008166570A JP2008166570A JP2006355592A JP2006355592A JP2008166570A JP 2008166570 A JP2008166570 A JP 2008166570A JP 2006355592 A JP2006355592 A JP 2006355592A JP 2006355592 A JP2006355592 A JP 2006355592A JP 2008166570 A JP2008166570 A JP 2008166570A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 238000002955 isolation Methods 0.000 claims description 34
- 230000015556 catabolic process Effects 0.000 claims description 32
- 239000010410 layer Substances 0.000 claims description 28
- 239000011229 interlayer Substances 0.000 claims description 17
- 239000003963 antioxidant agent Substances 0.000 claims description 16
- 230000003078 antioxidant effect Effects 0.000 claims description 16
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 8
- 229920005591 polysilicon Polymers 0.000 claims description 8
- 150000002500 ions Chemical class 0.000 claims description 5
- 238000000926 separation method Methods 0.000 abstract 1
- 230000005684 electric field Effects 0.000 description 19
- 238000000034 method Methods 0.000 description 18
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 239000002184 metal Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000005468 ion implantation Methods 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 238000000206 photolithography Methods 0.000 description 3
- WSLDOOZREJYCGB-UHFFFAOYSA-N 1,2-Dichloroethane Chemical compound ClCCCl WSLDOOZREJYCGB-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000003064 anti-oxidating effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000002040 relaxant effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
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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
- H01L21/77—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
- H01L21/823462—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the gate insulating layers, e.g. different gate insulating layer thicknesses, particular gate insulator materials or particular gate insulator implants
-
- 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
- H01L21/823437—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes
- H01L21/823456—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes gate conductors with different shapes, lengths or dimensions
-
- 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
- H01L21/8238—Complementary field-effect transistors, e.g. CMOS
- H01L21/823828—Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes
- H01L21/82385—Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes gate conductors with different shapes, lengths or dimensions
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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
- H01L21/77—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
- H01L21/8238—Complementary field-effect transistors, e.g. CMOS
- H01L21/823857—Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the gate insulating layers, e.g. different gate insulating layer thicknesses, particular gate insulator materials or particular gate insulator implants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. 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
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42364—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the insulating layer, e.g. thickness or uniformity
- H01L29/42368—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the insulating layer, e.g. thickness or uniformity the thickness being non-uniform
Abstract
【解決手段】半導体装置は、P型半導体基板9の表面に形成される素子分離領域8によって区画された活性領域に、チャネル領域と、チャネル領域の両側に配置されるソース・ドレイン領域7とが形成されており、チャネル領域には、ゲート絶縁膜2が形成されており、ゲート絶縁膜2の上にゲート電極4が形成されており、ゲート絶縁膜2は、その周縁部に中央部よりも厚く形成されたバーズヘッド3を有する。
【選択図】図1
Description
2 ゲート絶縁膜
3 バーズヘッド
4 ゲート電極
5 活性領域
6 チャネル領域
7 ソース・ドレイン領域
8 素子分離領域
9 P型半導体基板(第1導電型半導体基板)
10 パッド酸化膜(酸化膜)
11 N型ドリフト層(第2導電型ドリフト層)
12 酸化防止膜
13 開口
14 サイドウォール
15 層間絶縁膜
Claims (7)
- 第1導電型半導体基板の表面に形成される素子分離領域によって区画された活性領域に、チャネル領域と、前記チャネル領域の両側に配置されるソース・ドレイン領域とが形成されており、前記チャネル領域には、ゲート絶縁膜が形成されており、前記ゲート絶縁膜の上にゲート電極が形成されている半導体装置であって、
前記ゲート絶縁膜は、その周縁部に中央部よりも厚く形成されたバーズヘッドを有することを特徴とする半導体装置。 - 前記バーズヘッドは、前記中央部よりも20%以上40%以下だけ厚く自己整合的に形成される請求項1記載の半導体装置。
- 前記バーズヘッドの幅は、0.08μm以上0.16μm以下である請求項1記載の半導体装置。
- 第1導電型半導体基板の表面に形成される素子分離領域によって区画された複数個の活性領域のうちのある活性領域に高耐圧トランジスタが形成され、前記複数個の活性領域のうちの他の活性領域に低耐圧トランジスタが形成された半導体装置であって、
前記高耐圧トランジスタは、チャネル領域と、前記チャネル領域の両側に形成されたソース・ドレイン領域とを有し、
前記チャネル領域には、ゲート絶縁膜が形成されており、前記ゲート絶縁膜の上にゲート電極が形成されており、
前記ゲート絶縁膜は、その周縁部に中央部よりも厚く形成されたバーズヘッドを有することを特徴とする半導体装置。 - 第1導電型半導体基板の表面に素子分離領域を形成し、
前記素子分離領域により区画された活性領域上に、酸化膜を形成し、レジストをマスクにしてソース・ドレイン領域形成用の第1イオンを注入して第2導電型ドリフト層、及びチャンネル領域を形成し、
前記第1導電型半導体基板上に酸化防止膜を形成し、前記酸化防止膜に前記チャンネル領域に対応する開口を形成し、
その周縁部に中央部よりも厚く形成されたバーズヘッドを有するゲート絶縁膜を上記開口に形成し、
上記開口を覆うようにポリシリコン層を形成し、
前記酸化防止膜上のポリシリコン層を除去して、前記開口内にゲート電極を形成し、
前記酸化防止膜を除去して、前記ゲート電極の側壁にサイドウォールを形成し、
前記第2導電型ドリフト層に第2イオンを注入して、ソース・ドレイン領域を形成し、
前記ソース・ドレイン領域、前記ゲート電極及び前記素子分離領域を覆って層間絶縁膜を形成することを特徴とする半導体装置の製造方法。 - 前記バーズヘッドは、前記中央部よりも20%以上40%以下だけ厚く形成する請求項5記載の半導体装置の製造方法。
- 前記バーズヘッドと前記酸化防止膜とに基づいて前記ゲート電極を自己整合的に形成する請求項5記載の半導体装置の製造方法。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006355592A JP4202388B2 (ja) | 2006-12-28 | 2006-12-28 | 半導体装置及びその製造方法 |
PCT/JP2007/074728 WO2008081756A1 (ja) | 2006-12-28 | 2007-12-21 | 半導体装置及びその製造方法 |
TW96150021A TW200847296A (en) | 2006-12-28 | 2007-12-25 | Semiconductor device and manufacturing method thereof |
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JP2006355592A JP4202388B2 (ja) | 2006-12-28 | 2006-12-28 | 半導体装置及びその製造方法 |
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JP2008166570A true JP2008166570A (ja) | 2008-07-17 |
JP4202388B2 JP4202388B2 (ja) | 2008-12-24 |
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TW (1) | TW200847296A (ja) |
WO (1) | WO2008081756A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010278253A (ja) * | 2009-05-28 | 2010-12-09 | Fujitsu Semiconductor Ltd | 半導体装置とその製造方法 |
JP2014036093A (ja) * | 2012-08-08 | 2014-02-24 | Asahi Kasei Electronics Co Ltd | 半導体装置、及び半導体装置の製造方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH1126766A (ja) * | 1997-06-27 | 1999-01-29 | New Japan Radio Co Ltd | Mos型電界効果トランジスタおよびその製造方法 |
JP2001168330A (ja) * | 1999-12-13 | 2001-06-22 | Seiko Epson Corp | Mosfetおよびmosfetの製造方法 |
JP2001313389A (ja) * | 2000-05-01 | 2001-11-09 | Seiko Epson Corp | 半導体装置およびその製造方法 |
-
2006
- 2006-12-28 JP JP2006355592A patent/JP4202388B2/ja not_active Expired - Fee Related
-
2007
- 2007-12-21 WO PCT/JP2007/074728 patent/WO2008081756A1/ja active Application Filing
- 2007-12-25 TW TW96150021A patent/TW200847296A/zh unknown
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010278253A (ja) * | 2009-05-28 | 2010-12-09 | Fujitsu Semiconductor Ltd | 半導体装置とその製造方法 |
JP2014036093A (ja) * | 2012-08-08 | 2014-02-24 | Asahi Kasei Electronics Co Ltd | 半導体装置、及び半導体装置の製造方法 |
Also Published As
Publication number | Publication date |
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JP4202388B2 (ja) | 2008-12-24 |
WO2008081756A1 (ja) | 2008-07-10 |
TW200847296A (en) | 2008-12-01 |
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