JP2008147615A - バルブ型リセスゲートを有する半導体素子の製造方法 - Google Patents
バルブ型リセスゲートを有する半導体素子の製造方法 Download PDFInfo
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- JP2008147615A JP2008147615A JP2007140203A JP2007140203A JP2008147615A JP 2008147615 A JP2008147615 A JP 2008147615A JP 2007140203 A JP2007140203 A JP 2007140203A JP 2007140203 A JP2007140203 A JP 2007140203A JP 2008147615 A JP2008147615 A JP 2008147615A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 75
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 47
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 21
- 229920005591 polysilicon Polymers 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 14
- 238000005530 etching Methods 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 238000007740 vapor deposition Methods 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 3
- 229910021332 silicide Inorganic materials 0.000 claims description 3
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims description 3
- 238000002955 isolation Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/28008—Making conductor-insulator-semiconductor electrodes
- H01L21/28017—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon
- H01L21/28026—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor
- H01L21/28114—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor characterised by the sectional shape, e.g. T, inverted-T
-
- 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
- H01L29/41—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
- H01L29/42356—Disposition, e.g. buried gate electrode
- H01L29/4236—Disposition, e.g. buried gate electrode within a trench, e.g. trench gate electrode, groove gate electrode
-
- 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
- H01L29/41—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
- H01L29/42372—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the conducting layer, e.g. the length, the sectional shape or the lay-out
- H01L29/42376—Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the conducting layer, e.g. the length, the sectional shape or the lay-out characterised by the length or the sectional shape
-
- 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
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- 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
- H01L29/66613—Lateral single gate silicon transistors with a gate recessing step, e.g. using local oxidation
- H01L29/66621—Lateral single gate silicon transistors with a gate recessing step, e.g. using local oxidation using etching to form a recess at the gate location
-
- 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
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Electrodes Of Semiconductors (AREA)
- Drying Of Semiconductors (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Abstract
【解決手段】本発明の半導体素子の製造方法は、半導体基板31にバルブ型リセスを形成するステップと、該バルブ型リセスを含む半導体基板31の全面にゲート絶縁膜34を形成するステップと、前記バルブ型リセスのバルブパターンの側壁にパターニングされた第1導電膜35Aを形成するステップと、この状態の構造全体の上にパターニングされた第2導電膜を形成するステップとを含む。
【選択図】図3D
Description
32 素子分離構造
33 バルブ型リセス
34 ゲート絶縁膜
35 第1導電膜(ポリシリコン膜)
36 第2導電膜(ポリシリコン膜)
37 ゲートハードマスクパターン
Claims (19)
- 半導体基板にバルブ型リセスを形成するステップと、
前記バルブ型リセスを含む前記半導体基板の全面にゲート絶縁膜を形成するステップと、
前記バルブ型リセスのバルブパターンの側壁にパターニングされた第1導電膜を形成するステップと、
パターニングされた前記第1導電膜を含む前記半導体基板上にパターニングされた第2導電膜を形成するステップと、を含むことを特徴とする半導体素子の製造方法。 - 前記第1導電膜を形成する前記ステップが、
前記ゲート絶縁膜上に前記第1導電膜を形成するステップと、
前記ゲート絶縁膜が露出するまで前記第1導電膜をエッチバックするステップと、を含むことを特徴とする請求項1に記載の半導体素子の製造方法。 - パターニングされた前記第1導電膜及び第2導電膜が、ポリシリコン膜であることを特徴とする請求項1に記載の半導体素子の製造方法。
- 前記第1導電膜のエッチバックが、
HBr、Cl2及びO2の混合ガスを用いて行われることを特徴とする請求項2に記載の半導体素子の製造方法。 - 前記第1導電膜のエッチバックが、
1.33Pa〜 9.33Pa(10mTorr〜70mTorr)の範囲の圧力及び100W〜400Wの範囲のバイアスパワーを印加する条件下で行われることを特徴とする請求項4に記載の半導体素子の製造方法。 - パターニングされた前記第1導電膜が、単一タイプの蒸着装置で形成されることを特徴とする請求項3に記載の半導体素子の製造方法。
- パターニングされた前記第2導電膜が、炉タイプの蒸着装置で形成されることを特徴とする請求項3に記載の半導体素子の製造方法。
- 半導体基板にバルブ型リセスを形成するステップと、
前記バルブ型リセスを備える前記半導体基板の全面にゲート絶縁膜を形成するステップと、
前記ゲート絶縁膜上に第1導電膜を形成するステップと、
前記ゲート絶縁膜が露出するまで前記第1導電膜をエッチバックするステップと、
前記第1導電膜及び露出した前記ゲート絶縁膜上に第2導電膜を形成するステップと、
前記第2導電膜上にゲートハードマスクパターンを形成するステップと、
前記第2導電膜をエッチングしてパターニングされた第2導電膜を形成するステップと、を含むことを特徴とする半導体素子の製造方法。 - 前記半導体基板にバルブ型リセスを形成する前記ステップが、
前記半導体基板のアクティブ領域の所定領域をエッチングして垂直な形状を有するネックパターンを形成するステップと、
前記ネックパターンの側壁上にスペーサ絶縁膜を形成するステップと、を含むことを特徴とする請求項8に記載の半導体素子の製造方法。 - 前記スペーサ絶縁膜をバリアとして使用し、前記ネックパターンの下の前記半導体基板を等方性エッチングして球形状を有するバルブパターンを形成するステップを更に含み、
前記バルブ型リセスが、ネックパターン及びバルブパターンを含むことを特徴とする請求項9に記載の半導体素子の製造方法。 - 前記ゲート絶縁膜が、酸化物で形成されることを特徴とする請求項8に記載の半導体素子の製造方法。
- 前記第1導電膜及び前記第2導電膜が、ゲート電極を形成することを特徴とする請求項8に記載の半導体素子の製造方法。
- 前記第1導電膜及び前記第2導電膜が、ポリシリコン膜で形成されることを特徴とする請求項8に記載の半導体素子の製造方法。
- 前記第1導電膜が、単一タイプの蒸着装置で形成されることを特徴とする請求項8に記載の半導体素子の製造方法。
- 前記第1導電膜のエッチバックが、
前記第1導電膜が前記バルブパターンの側壁に残留し、前記バルブ型リセスが実質的に垂直な形状を有するように行われることを特徴とする請求項10に記載の半導体素子の製造方法。 - 前記第1導電膜のエッチバックが、
HBr、Cl2及びO2の混合ガスを用い、1.33Pa〜 9.33Pa(10mTorr〜70mTorr)の範囲の圧力及び100W〜400Wの範囲のバイアスパワーを印加する条件下で行われることを特徴とする請求項8に記載の半導体素子の製造方法。 - 前記第2導電膜が、炉タイプの蒸着装置で形成されることを特徴とする請求項8に記載の半導体素子の製造方法。
- 前記ゲートハードマスクパターン及びパターニングされた前記第2導電膜が、ゲートパターンを形成することを特徴とする請求項8に記載の半導体素子の製造方法。
- パターニングされた前記第2導電膜及び前記ゲートハードマスクパターンの間に金属膜又は金属シリサイド膜を形成するステップを更に含むことを特徴とする請求項8に記載の半導体素子の製造方法。
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KR1020060122021A KR100780598B1 (ko) | 2006-12-05 | 2006-12-05 | 벌브형 리세스 게이트를 갖는 반도체 소자의 제조 방법 |
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US (1) | US7790552B2 (ja) |
JP (1) | JP2008147615A (ja) |
KR (1) | KR100780598B1 (ja) |
CN (1) | CN100547764C (ja) |
TW (1) | TWI360184B (ja) |
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KR101001149B1 (ko) | 2007-12-24 | 2010-12-15 | 주식회사 하이닉스반도체 | 수직 채널 트랜지스터의 제조 방법 |
KR101087918B1 (ko) * | 2009-12-21 | 2011-11-30 | 주식회사 하이닉스반도체 | 반도체 소자 및 그 제조 방법 |
US10023266B2 (en) | 2016-05-11 | 2018-07-17 | Fallbrook Intellectual Property Company Llc | Systems and methods for automatic configuration and automatic calibration of continuously variable transmissions and bicycles having continuously variable transmissions |
US11215268B2 (en) | 2018-11-06 | 2022-01-04 | Fallbrook Intellectual Property Company Llc | Continuously variable transmissions, synchronous shifting, twin countershafts and methods for control of same |
US11174922B2 (en) | 2019-02-26 | 2021-11-16 | Fallbrook Intellectual Property Company Llc | Reversible variable drives and systems and methods for control in forward and reverse directions |
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2006
- 2006-12-05 KR KR1020060122021A patent/KR100780598B1/ko not_active IP Right Cessation
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- 2007-05-11 US US11/803,059 patent/US7790552B2/en not_active Expired - Fee Related
- 2007-05-14 TW TW096116979A patent/TWI360184B/zh not_active IP Right Cessation
- 2007-05-28 JP JP2007140203A patent/JP2008147615A/ja not_active Ceased
- 2007-06-18 CN CNB200710108696XA patent/CN100547764C/zh not_active Expired - Fee Related
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JPH11297811A (ja) * | 1998-03-31 | 1999-10-29 | Internatl Business Mach Corp <Ibm> | 半導体装置の製造方法 |
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US7790552B2 (en) | 2010-09-07 |
TW200826204A (en) | 2008-06-16 |
CN100547764C (zh) | 2009-10-07 |
CN101197322A (zh) | 2008-06-11 |
KR100780598B1 (ko) | 2007-11-30 |
US20080132051A1 (en) | 2008-06-05 |
TWI360184B (en) | 2012-03-11 |
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