JP2016524342A - 分割ゲート型不揮発性メモリセル用の自己整合ソースの形成 - Google Patents
分割ゲート型不揮発性メモリセル用の自己整合ソースの形成 Download PDFInfo
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- 239000000463 material Substances 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 4
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- 238000010583 slow cooling Methods 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims 2
- 239000010410 layer Substances 0.000 description 14
- 238000002955 isolation Methods 0.000 description 12
- 239000012212 insulator Substances 0.000 description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- 238000000151 deposition Methods 0.000 description 5
- 230000008021 deposition Effects 0.000 description 5
- 238000002513 implantation Methods 0.000 description 5
- 229920002120 photoresistant polymer Polymers 0.000 description 5
- 239000008186 active pharmaceutical agent Substances 0.000 description 4
- 150000004767 nitrides Chemical class 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 229920005591 polysilicon Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002019 doping agent Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
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- 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
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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
- H01L21/823418—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the source or drain structures, e.g. specific source or drain implants or silicided source or drain structures or raised source or drain structures
- H01L21/823425—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of the source or drain structures, e.g. specific source or drain implants or silicided source or drain structures or raised source or drain structures manufacturing common source or drain regions between a plurality of conductor-insulator-semiconductor structures
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/16—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/401—Multistep manufacturing processes
- H01L29/4011—Multistep manufacturing processes for data storage electrodes
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- 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
- H01L29/42324—Gate electrodes for transistors with a floating gate
- H01L29/42328—Gate electrodes for transistors with a floating gate with at least one additional gate other than the floating gate and the control gate, e.g. program gate, erase gate or select gate
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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
- H01L29/66825—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a floating gate
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- H10B—ELECTRONIC MEMORY DEVICES
- H10B41/00—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates
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Abstract
Description
本出願は、2013年7月5日に出願された米国特許仮出願第61/843,189号の利益を主張する。上記仮出願は、参照により本明細書に組み込まれる。
Claims (11)
- メモリセルを形成する方法であって、
第1の導電型を有する基板の上に、それから絶縁される材料の導電層を形成する工程と、
前記導電層の上に、それから絶縁される一対の離間した導電性制御ゲートを形成する工程であって、前記制御ゲートのそれぞれは対向する内側側壁及び外側側壁を含み、前記内側側壁は互いに対向する、工程と、
前記内側側壁に沿って、かつ前記導電層の上に一対の絶縁材の第1のスペーサを形成する工程と、
前記導電層のエッチングを実行して、前記導電層の一対の浮遊ゲートを形成する工程であって、前記浮遊ゲートは互いに対向し、前記一対の第1のスペーサの側面と整合する内側側壁を含む、工程と、
前記第1のスペーサの1つに沿って、かつ前記浮遊ゲートの1つの前記内側側壁に沿ってそれぞれ延在する、一対の絶縁材の第2のスペーサを形成する工程と、
前記基板の中にトレンチを形成する工程であって、前記トレンチは前記一対の第2のスペーサの側面と整合する側壁を有する、工程と、
前記トレンチ内にシリコン炭素を形成する工程と、
前記シリコン炭素の中に材料を注入して第2の導電型を内部に有する第1の領域を形成する工程と、を含む方法。 - 各制御ゲートの上に絶縁材のブロックを形成する工程であって、前記第1及び第2のスペーサのそれぞれが絶縁材の前記ブロックの1つに沿って少なくとも部分的に延在する、工程を更に含む、請求項1に記載の方法。
- 前記制御ゲートのそれぞれと前記一対の第1のスペーサの1つとの間に二酸化シリコン及び窒化ケイ素を形成する工程を更に含む、請求項1に記載の方法。
- 徐冷プロセスを実行して前記シリコン炭素内の前記注入材料を拡散する工程を更に含む、請求項1に記載の方法。
- 前記第1の領域上に配設され、それから絶縁される、導電体の消去ゲートを形成する工程を更に含む、請求項1に記載の方法。
- 前記外側側壁の1つ及び前記基板に隣接してそれぞれ配設され、それから絶縁される一対のワード線ゲートを形成する工程を更に含む、請求項1に記載の方法。
- メモリデバイスであって、
互いに対向する内側側壁を含む、一対の離間した導電性浮遊ゲートであって、第1の導電型の基板上に配設され、それから絶縁される浮遊ゲートと、
前記浮遊ゲートの1つの上にそれぞれ配設され、それから絶縁される一対の離間した導電性制御ゲートであって、前記制御ゲートのそれぞれは対向する内側側壁及び外側側壁を含み、前記制御ゲートの前記内側側壁は互いに対向する、制御ゲートと、
前記制御ゲートの前記内側側壁に沿って延在し、前記浮遊ゲートの上に配設される一対の絶縁材の第1のスペーサであって、前記浮遊ゲートの前記内側側壁は前記一対の第1のスペーサの側面と整合する、第1のスペーサと、
前記第1のスペーサの1つに沿って、かつ前記浮遊ゲートの1つの前記内側側壁に沿ってそれぞれ延在する、一対の絶縁材の第2のスペーサと、
前記一対の第2のスペーサの側面と整合する側壁を有する前記基板の中に形成されるトレンチと、
前記トレンチ内に配設されるシリコン炭素と、
第2の導電型を内部に有する第1の領域を形成する前記シリコン炭素の中に注入された材料と、を含む、メモリデバイス。 - 前記制御ゲートの1つの上にそれぞれ配設された一対の絶縁材のブロックであって、前記第1及び第2のスペーサのそれぞれが絶縁材の前記ブロックの1つに沿って少なくとも部分的に延在する、ブロックを更に含む、請求項7に記載のメモリデバイス。
- 前記制御ゲートのそれぞれと前記一対の第1のスペーサの1つとの間に配設された二酸化シリコン及び窒化ケイ素を更に含む、請求項7に記載のメモリデバイス。
- 前記第1の領域上に配設され、それから絶縁される、導電体の消去ゲートを更に含む、請求項7に記載のメモリデバイス。
- 前記外側側壁の1つ及び前記基板に隣接してそれぞれ配設され、それから絶縁される一対のワード線ゲートを更に含む、請求項7に記載のメモリデバイス。
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US201361843189P | 2013-07-05 | 2013-07-05 | |
US61/843,189 | 2013-07-05 | ||
US14/319,893 US9484261B2 (en) | 2013-07-05 | 2014-06-30 | Formation of self-aligned source for split-gate non-volatile memory cell |
US14/319,893 | 2014-06-30 | ||
PCT/US2014/045003 WO2015002923A1 (en) | 2013-07-05 | 2014-07-01 | Formation of self-aligned source for split-gate non-volatile memory cell |
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CN (1) | CN105453271B (ja) |
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US10943996B2 (en) * | 2016-11-29 | 2021-03-09 | Taiwan Semiconductor Manufacturing Co., Ltd. | Method of manufacturing semiconductor device including non-volatile memories and logic devices |
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KR102178977B1 (ko) | 2018-11-23 | 2020-11-16 | 재단법인대구경북과학기술원 | 광섬유 센서 기반 초정밀 인젝터 |
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US20170025424A1 (en) | 2017-01-26 |
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EP3017476B1 (en) | 2021-05-19 |
TW201511182A (zh) | 2015-03-16 |
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US9484261B2 (en) | 2016-11-01 |
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KR20160030240A (ko) | 2016-03-16 |
US9659946B2 (en) | 2017-05-23 |
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