JP5103478B2 - 不揮発性半導体記憶装置の製造方法 - Google Patents
不揮発性半導体記憶装置の製造方法 Download PDFInfo
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- JP5103478B2 JP5103478B2 JP2009531989A JP2009531989A JP5103478B2 JP 5103478 B2 JP5103478 B2 JP 5103478B2 JP 2009531989 A JP2009531989 A JP 2009531989A JP 2009531989 A JP2009531989 A JP 2009531989A JP 5103478 B2 JP5103478 B2 JP 5103478B2
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- 239000004065 semiconductor Substances 0.000 title claims description 177
- 238000000034 method Methods 0.000 title claims description 88
- 238000004519 manufacturing process Methods 0.000 title claims description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 226
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 225
- 239000000758 substrate Substances 0.000 claims description 157
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 143
- 229910052710 silicon Inorganic materials 0.000 claims description 139
- 239000010703 silicon Substances 0.000 claims description 139
- 239000001301 oxygen Substances 0.000 claims description 138
- 229910052760 oxygen Inorganic materials 0.000 claims description 138
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 136
- 230000002950 deficient Effects 0.000 claims description 117
- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 78
- 238000010438 heat treatment Methods 0.000 claims description 48
- 238000003860 storage Methods 0.000 claims description 43
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 claims description 22
- 238000012545 processing Methods 0.000 claims description 20
- 230000007423 decrease Effects 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 6
- 238000000059 patterning Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 description 88
- 229910052581 Si3N4 Inorganic materials 0.000 description 56
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 56
- 239000012535 impurity Substances 0.000 description 43
- 238000009792 diffusion process Methods 0.000 description 36
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- 229910017052 cobalt Inorganic materials 0.000 description 22
- 239000010941 cobalt Substances 0.000 description 22
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 22
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 19
- 229920005591 polysilicon Polymers 0.000 description 19
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 18
- 238000010405 reoxidation reaction Methods 0.000 description 18
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 15
- 229910052757 nitrogen Inorganic materials 0.000 description 15
- 229910021332 silicide Inorganic materials 0.000 description 14
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 14
- 230000006870 function Effects 0.000 description 13
- 238000005259 measurement Methods 0.000 description 13
- 230000004888 barrier function Effects 0.000 description 12
- 238000007254 oxidation reaction Methods 0.000 description 12
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 11
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 11
- 239000007789 gas Substances 0.000 description 11
- 239000010936 titanium Substances 0.000 description 11
- 229910052719 titanium Inorganic materials 0.000 description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 10
- 239000001257 hydrogen Substances 0.000 description 10
- 229910052739 hydrogen Inorganic materials 0.000 description 10
- 238000002955 isolation Methods 0.000 description 10
- 238000005229 chemical vapour deposition Methods 0.000 description 9
- 238000005121 nitriding Methods 0.000 description 9
- 238000000560 X-ray reflectometry Methods 0.000 description 8
- 229910021529 ammonia Inorganic materials 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
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- 125000006850 spacer group Chemical group 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000000206 photolithography Methods 0.000 description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 6
- 229910052721 tungsten Inorganic materials 0.000 description 6
- 239000010937 tungsten Substances 0.000 description 6
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 5
- 238000005530 etching Methods 0.000 description 5
- 125000004430 oxygen atom Chemical group O* 0.000 description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 4
- -1 Metal Oxide Nitride Chemical class 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 4
- 229910052796 boron Inorganic materials 0.000 description 4
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- 238000001004 secondary ion mass spectrometry Methods 0.000 description 4
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- 150000004767 nitrides Chemical class 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-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
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- 238000012795 verification Methods 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon 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
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000006356 dehydrogenation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005430 electron energy loss spectroscopy Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- RUFLMLWJRZAWLJ-UHFFFAOYSA-N nickel silicide Chemical compound [Ni]=[Si]=[Ni] RUFLMLWJRZAWLJ-UHFFFAOYSA-N 0.000 description 1
- 229910021334 nickel silicide Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 229960001730 nitrous oxide Drugs 0.000 description 1
- 235000013842 nitrous oxide Nutrition 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000004940 physical analysis method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910021341 titanium silicide Inorganic materials 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B69/00—Erasable-and-programmable ROM [EPROM] devices not provided for in groups H10B41/00 - H10B63/00, e.g. ultraviolet erasable-and-programmable ROM [UVEPROM] devices
-
- 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
- H01L29/401—Multistep manufacturing processes
- H01L29/4011—Multistep manufacturing processes for data storage electrodes
- H01L29/40117—Multistep manufacturing processes for data storage electrodes the electrodes comprising a charge-trapping insulator
-
- 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
- H01L29/4234—Gate electrodes for transistors with charge trapping gate insulator
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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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/51—Insulating materials associated therewith
- H01L29/511—Insulating materials associated therewith with a compositional variation, e.g. multilayer structures
- H01L29/513—Insulating materials associated therewith with a compositional variation, e.g. multilayer structures the variation being perpendicular to the channel plane
-
- 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
- H01L29/66833—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a charge trapping gate insulator, e.g. MNOS transistors
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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
- H01L29/68—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
- H01L29/792—Field effect transistors with field effect produced by an insulated gate with charge trapping gate insulator, e.g. MNOS-memory transistors
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Non-Volatile Memory (AREA)
- Semiconductor Memories (AREA)
- Formation Of Insulating Films (AREA)
Description
Claims (7)
- (a)半導体基板上にトンネルシリコン酸化膜を形成する工程と、
(b)前記(a)工程後、前記半導体基板に接する前記トンネルシリコン酸化膜の一部をシリコン酸窒化膜に変換する工程と、
(c)前記トンネルシリコン酸化膜上に電荷蓄積膜を形成する工程と、
(d)前記電荷蓄積膜上にゲート絶縁膜を形成する工程と、
(e)前記ゲート絶縁膜上に導体膜を形成する工程と、
(f)前記導体膜をパターニングすることによりゲート電極を形成し、かつ、前記ゲート絶縁膜、前記電荷蓄積膜、前記トンネルシリコン酸化膜および前記シリコン酸窒化膜を前記ゲート電極に合わせて加工する工程と、
(g)前記ゲート電極に整合するように、前記半導体基板内にソース領域およびドレイン領域を形成する工程とを備える不揮発性半導体記憶装置の製造方法であって、
前記(b)工程は、
(b1)前記半導体基板と前記トンネルシリコン酸化膜との界面に窒素原子を導入する工程と、
(b2)前記(b1)工程後、前記窒素原子を前記トンネルシリコン酸化膜の膜厚方向に拡散させて前記シリコン酸窒化膜を形成する工程とを有することを特徴とする不揮発性半導体記憶装置の製造方法。 - 請求項1記載の不揮発性半導体記憶装置の製造方法であって、
前記シリコン酸窒化膜に含まれる窒素原子の密度が前記半導体基板の界面から前記シリコン酸窒化膜の膜厚方向に進むにつれて減少していることを特徴とする不揮発性半導体記憶装置の製造方法。 - 請求項2記載の不揮発性半導体記憶装置の製造方法であって、
前記(b1)工程は、一酸化窒素を含む雰囲気中での第1熱処理によって実施し、
前記(b2)工程は、酸素を含む雰囲気中で第2熱処理によって実施することを特徴とする不揮発性半導体記憶装置の製造方法。 - 請求項3記載の不揮発性半導体記憶装置の製造方法であって、
前記(b1)工程で実施する前記第1熱処理は、一酸化窒素の濃度が100%である雰囲気での熱処理であることを特徴とする不揮発性半導体記憶装置の製造方法。 - 請求項3記載の不揮発性半導体記憶装置の製造方法であって、
前記(b1)工程で実施する前記第1熱処理は、900℃以上1100℃以下の温度で熱処理を実施することを特徴とする不揮発性半導体記憶装置の製造方法。 - 請求項3記載の不揮発性半導体記憶装置の製造方法であって、
前記(b2)工程で実施する前記第2熱処理は、酸素の濃度が50%以上100%以下の雰囲気中での熱処理であり、かつ、前記第2熱処理の温度が900℃以上1100℃以下であることを特徴とする不揮発性半導体記憶装置の製造方法。 - 請求項1記載の不揮発性半導体記憶装置の製造方法であって、
前記シリコン酸窒化膜に変換する前記トンネルシリコン酸化膜の一部は、前記(a)工程で前記トンネルシリコン酸化膜を形成する際、前記半導体基板の界面に必然的に形成される化学量論的に酸素が不足している酸素不足膜であることを特徴とする不揮発性半導体記憶装置の製造方法。
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US (1) | US8053826B2 (ja) |
JP (1) | JP5103478B2 (ja) |
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WO2010047068A1 (ja) * | 2008-10-21 | 2010-04-29 | パナソニック株式会社 | 不揮発性記憶装置及びそのメモリセルへの書き込み方法 |
JP5356005B2 (ja) | 2008-12-10 | 2013-12-04 | 株式会社東芝 | 不揮発性半導体記憶装置及びその製造方法 |
US9443866B1 (en) | 2015-03-24 | 2016-09-13 | Sandisk Technologies Llc | Mid-tunneling dielectric band gap modification for enhanced data retention in a three-dimensional semiconductor device |
JP2019029376A (ja) * | 2017-07-25 | 2019-02-21 | ルネサスエレクトロニクス株式会社 | 半導体装置及び半導体装置の製造方法 |
JP2019079845A (ja) * | 2017-10-20 | 2019-05-23 | ルネサスエレクトロニクス株式会社 | 半導体装置の製造方法 |
Citations (4)
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JPH08340056A (ja) * | 1995-06-12 | 1996-12-24 | Sony Corp | シリコン系絶縁膜の形成方法と半導体装置 |
JPH10321740A (ja) * | 1997-03-19 | 1998-12-04 | Citizen Watch Co Ltd | 半導体不揮発性メモリトランジスタおよびその製造方法 |
JP2001135735A (ja) * | 1999-11-08 | 2001-05-18 | Nec Corp | 不揮発性半導体装置の製造方法 |
JP2002353343A (ja) * | 2001-05-29 | 2002-12-06 | Nec Corp | 半導体装置およびその製造方法 |
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KR960002066B1 (ko) | 1992-10-20 | 1996-02-10 | Lg반도체주식회사 | 옥시 나이트라이드 제조방법 |
JPH06291330A (ja) | 1993-03-31 | 1994-10-18 | Citizen Watch Co Ltd | 半導体不揮発性記憶素子とその製造方法 |
JP3485403B2 (ja) | 1995-11-28 | 2004-01-13 | 沖電気工業株式会社 | 半導体装置の製造方法 |
KR20000018524A (ko) | 1998-09-02 | 2000-04-06 | 김영환 | 비휘발성 메모리 소자 및 그의 제조방법 |
TW510047B (en) * | 2001-11-09 | 2002-11-11 | Macronix Int Co Ltd | Structure and manufacture method of silicon nitride read only memory |
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH08340056A (ja) * | 1995-06-12 | 1996-12-24 | Sony Corp | シリコン系絶縁膜の形成方法と半導体装置 |
JPH10321740A (ja) * | 1997-03-19 | 1998-12-04 | Citizen Watch Co Ltd | 半導体不揮発性メモリトランジスタおよびその製造方法 |
JP2001135735A (ja) * | 1999-11-08 | 2001-05-18 | Nec Corp | 不揮発性半導体装置の製造方法 |
JP2002353343A (ja) * | 2001-05-29 | 2002-12-06 | Nec Corp | 半導体装置およびその製造方法 |
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TWI368971B (ja) | 2012-07-21 |
WO2009034605A1 (ja) | 2009-03-19 |
US20100176439A1 (en) | 2010-07-15 |
JPWO2009034605A1 (ja) | 2010-12-16 |
TW200913155A (en) | 2009-03-16 |
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