JP2005340840A - リセスチャンネルmosfetの製造方法 - Google Patents
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 63
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 63
- 238000000034 method Methods 0.000 claims abstract description 49
- 239000000758 substrate Substances 0.000 claims abstract description 40
- 238000005530 etching Methods 0.000 claims abstract description 24
- 238000002955 isolation Methods 0.000 claims abstract description 23
- 238000000151 deposition Methods 0.000 claims abstract description 11
- 239000004065 semiconductor Substances 0.000 claims abstract description 10
- 229920002120 photoresistant polymer Polymers 0.000 claims description 29
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 27
- 229910052710 silicon Inorganic materials 0.000 claims description 27
- 239000010703 silicon Substances 0.000 claims description 27
- 238000005468 ion implantation Methods 0.000 claims description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 10
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 5
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 5
- 238000009966 trimming Methods 0.000 claims description 3
- 230000008021 deposition Effects 0.000 abstract description 4
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- 239000007789 gas Substances 0.000 description 9
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 6
- 229920005591 polysilicon Polymers 0.000 description 6
- 238000005229 chemical vapour deposition Methods 0.000 description 5
- 238000000206 photolithography Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
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- 125000006850 spacer group Chemical group 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910006283 Si—O—H Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- GDFCWFBWQUEQIJ-UHFFFAOYSA-N [B].[P] Chemical compound [B].[P] GDFCWFBWQUEQIJ-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
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- 239000001301 oxygen Substances 0.000 description 1
- BPUBBGLMJRNUCC-UHFFFAOYSA-N oxygen(2-);tantalum(5+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ta+5].[Ta+5] BPUBBGLMJRNUCC-UHFFFAOYSA-N 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
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- 229920003209 poly(hydridosilsesquioxane) Polymers 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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- H—ELECTRICITY
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- 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
- 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
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- 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
- H01L21/823412—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the channel structures, e.g. channel implants, halo or pocket implants, or channel materials
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- 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
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- H10B12/05—Making the transistor
- H10B12/053—Making the transistor the transistor being at least partially in a trench in the substrate
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Abstract
【解決手段】 半導体基板上に絶縁膜パターンを形成した後、その上にシリコン酸化膜を蒸着する。絶縁膜パターンを平坦化終了点としてシリコン酸化膜を平坦化させることで、絶縁膜パターンの間にシリコン酸化膜マスクパターンを形成して絶縁膜パターンを除去する。シリコン酸化膜マスクパターンをエッチングマスクとして利用して基板をエッチングすることでリセストレンチを形成するリセスチャンネルMOSFETの製造方法。これにより、シリコン酸化膜の蒸着時に、基板に形成されているリセスを除去する効果がある。
【選択図】 図10A
Description
115 素子分離膜
120 パッド酸化膜
125 シリコン酸化窒化膜
130 絶縁膜
135 フォトレジストパターン
140 リセス
142 シリコン酸化膜マスクパターン
145 リセストレンチ
Claims (14)
- 半導体基板上に絶縁膜パターンを形成するステップと、
前記絶縁膜パターンが形成された基板上にシリコン酸化膜を蒸着した後、前記絶縁膜パターンを平坦化終了点として前記シリコン酸化膜を平坦化させることによって、前記絶縁膜パターンの間にシリコン酸化膜マスクパターンを形成するステップと、
前記シリコン酸化膜マスクパターンが形成された結果物から前記絶縁膜パターンを除去するステップと、
前記シリコン酸化膜マスクパターンをエッチングマスクとして利用して前記基板をエッチングすることでリセストレンチを形成するステップと、
前記リセストレンチが形成された結果物から前記シリコン酸化膜マスクパターンを除去するステップと、
前記リセストレンチ内で延びるゲートを形成するステップと、
を含むことを特徴とするリセスチャンネルMOSFETの製造方法。 - 前記絶縁膜は、パッド酸化膜とシリコン窒化膜との組合せまたはパッド酸化膜とシリコン酸化窒化膜との組合せで形成することを特徴とする請求項1に記載のリセスチャンネルMOSFETの製造方法。
- 前記絶縁膜パターンは、各絶縁膜パターンの幅よりも絶縁膜パターンの間隔を広く形成することを特徴とする請求項1に記載のリセスチャンネルMOSFETの製造方法。
- 前記絶縁膜パターンの形成中に前記基板にリセスが形成され、前記シリコン酸化膜マスクパターンを形成するステップでシリコン酸化膜で前記リセスを埋め込むことを特徴とする請求項1に記載のリセスチャンネルMOSFETの製造方法。
- 前記ゲートをイオン注入マスクとして前記基板内部にソース/ドレインイオン注入を行うステップを更に含むことを特徴とする請求項1に記載のリセスチャンネルMOSFETの製造方法。
- 半導体基板上にパッド酸化膜とシリコン酸化窒化膜とを順に形成して絶縁膜を形成するステップと、
前記絶縁膜上にリセストレンチが形成される領域を覆うフォトレジストパターンを形成するステップと、
前記フォトレジストパターンをエッチングマスクとして利用して前記絶縁膜をエッチングすることで、それぞれパッド酸化膜パターンとシリコン酸化窒化膜パターンとからなる絶縁膜パターンを形成するステップと、
前記フォトレジストパターンを除去するステップと、
前記絶縁膜パターンが形成された基板上にシリコン酸化膜を蒸着した後、前記シリコン酸化窒化膜パターンを平坦化終了点として前記シリコン酸化膜を平坦化させることで前記絶縁膜パターンの間にシリコン酸化膜マスクパターンを形成するステップと、
前記シリコン酸化膜マスクパターンが形成された結果物から前記シリコン酸化窒化膜パターンを除去するステップと、
前記シリコン酸化膜マスクパターンをエッチングマスクとして利用して前記パッド酸化膜パターンと前記基板とをエッチングすることでリセストレンチを形成するステップと、
前記リセストレンチが形成された結果物から前記シリコン酸化膜マスクパターンを除去するステップと、
前記リセストレンチ内で延びるゲートを形成するステップと、
を含むことを特徴とするリセスチャンネルMOSFETの製造方法。 - 前記フォトレジストパターンは、各フォトレジストパターンの幅よりも絶縁膜パターンの間隔を広く形成することを特徴とする請求項6に記載のリセスチャンネルMOSFETの製造方法。
- 前記フォトレジストパターンは、目標幅よりも広い幅に形成した後、フォトレジストトリミングの工程で目標幅に合わせることを特徴とする請求項7に記載のリセスチャンネルMOSFETの製造方法。
- 前記絶縁膜パターンの形成中に前記基板にリセスが形成され、前記シリコン酸化膜マスクパターンを形成するステップでシリコン酸化膜で前記リセスを埋め込むことを特徴とする請求項6に記載のリセスチャンネルMOSFETの製造方法。
- 前記基板に素子分離膜を形成するステップを更に含み、前記リセスが前記素子分離膜に形成されることを特徴とする請求項9に記載のリセスチャンネルMOSFETの製造方法。
- 前記リセストレンチを形成するステップは、
前記シリコン酸化膜マスクパターンを利用して露出された前記パッド酸化膜パターンを先ず除去した後に、前記基板をエッチングして前記リセストレンチを形成する2ステップ方法によることを特徴とする請求項6に記載のリセスチャンネルMOSFETの製造方法。 - 前記リセストレンチを形成するステップでは、前記パッド酸化膜パターンと前記基板とを同時にエッチングすることを特徴とする請求項6に記載のリセスチャンネルMOSFETの製造方法。
- 前記リセストレンチを形成した後、前記シリコン酸化膜マスクパターンがある状態で前記リセストレンチの底部にローカルイオン注入を行うステップを更に含むことを特徴とする請求項6に記載のリセスチャンネルMOSFETの製造方法。
- 前記ゲートをイオン注入マスクとして前記基板内部にソース/ドレインイオン注入を行うステップを更に含むことを特徴とする請求項6に記載のリセスチャンネルMOSFETの製造方法。
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KR2004-038206 | 2004-05-28 | ||
KR10-2004-0038206A KR100539265B1 (ko) | 2004-05-28 | 2004-05-28 | 리세스 채널 mosfet 제조방법 |
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JP2005340840A true JP2005340840A (ja) | 2005-12-08 |
JP4989041B2 JP4989041B2 (ja) | 2012-08-01 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US8373226B2 (en) | 2009-08-31 | 2013-02-12 | Elpida Memory, Inc. | Semiconductor device including a Trench-Gate Fin-FET |
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KR100600044B1 (ko) | 2005-06-30 | 2006-07-13 | 주식회사 하이닉스반도체 | 리세스게이트를 구비한 반도체소자의 제조 방법 |
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KR100689840B1 (ko) * | 2005-10-04 | 2007-03-08 | 삼성전자주식회사 | 리세스된 게이트 전극을 갖는 반도체소자 및 그의 제조방법 |
KR100799121B1 (ko) * | 2005-12-22 | 2008-01-29 | 주식회사 하이닉스반도체 | 벌브 리세스 게이트를 갖는 반도체 소자의 제조방법 |
JP2007220734A (ja) * | 2006-02-14 | 2007-08-30 | Elpida Memory Inc | 半導体装置及びその製造方法 |
KR100732304B1 (ko) | 2006-03-23 | 2007-06-25 | 주식회사 하이닉스반도체 | 반도체 소자 및 그의 제조 방법 |
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US7696094B2 (en) * | 2006-12-27 | 2010-04-13 | Spansion Llc | Method for improved planarization in semiconductor devices |
KR101026479B1 (ko) * | 2006-12-28 | 2011-04-01 | 주식회사 하이닉스반도체 | 반도체 소자 및 그의 제조 방법 |
KR100827538B1 (ko) * | 2006-12-28 | 2008-05-06 | 주식회사 하이닉스반도체 | 반도체 소자 및 그 제조 방법 |
KR100866733B1 (ko) * | 2007-06-29 | 2008-11-03 | 주식회사 하이닉스반도체 | 반도체 소자의 형성 방법 |
KR20090087645A (ko) | 2008-02-13 | 2009-08-18 | 삼성전자주식회사 | 리세스 채널 어레이 트랜지스터를 구비하는 반도체 소자의제조 방법 |
KR101004482B1 (ko) * | 2008-05-27 | 2010-12-31 | 주식회사 하이닉스반도체 | 반도체 소자의 형성 방법 |
US8642459B2 (en) * | 2008-08-28 | 2014-02-04 | Infineon Technologies Ag | Method for forming a semiconductor device with an isolation region on a gate electrode |
KR101068642B1 (ko) * | 2008-08-29 | 2011-09-28 | 주식회사 하이닉스반도체 | 반도체 장치 및 그 제조방법 |
CN106298871B (zh) * | 2015-06-24 | 2019-04-26 | 联华电子股份有限公司 | 半导体结构 |
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JPH07131009A (ja) * | 1993-11-04 | 1995-05-19 | Toshiba Corp | 半導体装置及びその製造方法 |
JPH11145273A (ja) * | 1997-11-07 | 1999-05-28 | Fujitsu Ltd | 半導体装置の製造方法 |
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US7247540B2 (en) | 2007-07-24 |
CN100514578C (zh) | 2009-07-15 |
JP4989041B2 (ja) | 2012-08-01 |
CN1702845A (zh) | 2005-11-30 |
KR20050112790A (ko) | 2005-12-01 |
US20050266648A1 (en) | 2005-12-01 |
KR100539265B1 (ko) | 2005-12-27 |
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