JP2009049407A - Nor型フラッシュメモリ素子及びその製造方法 - Google Patents
Nor型フラッシュメモリ素子及びその製造方法 Download PDFInfo
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- JP2009049407A JP2009049407A JP2008208465A JP2008208465A JP2009049407A JP 2009049407 A JP2009049407 A JP 2009049407A JP 2008208465 A JP2008208465 A JP 2008208465A JP 2008208465 A JP2008208465 A JP 2008208465A JP 2009049407 A JP2009049407 A JP 2009049407A
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 230000015654 memory Effects 0.000 title claims abstract description 10
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 72
- 229920005591 polysilicon Polymers 0.000 claims abstract description 72
- 239000000758 substrate Substances 0.000 claims abstract description 39
- 239000004065 semiconductor Substances 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims description 41
- 230000008569 process Effects 0.000 claims description 34
- 238000005468 ion implantation Methods 0.000 claims description 14
- 230000003647 oxidation Effects 0.000 claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims description 9
- 150000004767 nitrides Chemical class 0.000 claims description 7
- 238000005530 etching Methods 0.000 claims description 5
- 150000002500 ions Chemical class 0.000 claims description 5
- 229910052785 arsenic Inorganic materials 0.000 claims description 3
- 238000005229 chemical vapour deposition Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 238000004518 low pressure chemical vapour deposition Methods 0.000 claims description 3
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 2
- 230000010354 integration Effects 0.000 abstract description 6
- 239000010410 layer Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 239000000969 carrier Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- -1 arsenic ions Chemical class 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000002784 hot electron Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000009279 wet oxidation reaction Methods 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
- 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
- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
- H01L21/265—Bombardment with radiation with high-energy radiation producing ion implantation
-
- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/31051—Planarisation of the insulating layers
-
- 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
- H01L29/40114—Multistep manufacturing processes for data storage electrodes the electrodes comprising a conductor-insulator-conductor-insulator-semiconductor structure
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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
- H01L29/401—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
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B41/00—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates
- H10B41/30—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by the memory core region
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B43/00—EEPROM devices comprising charge-trapping gate insulators
- H10B43/30—EEPROM devices comprising charge-trapping gate insulators characterised by the memory core region
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- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- High Energy & Nuclear Physics (AREA)
- Ceramic Engineering (AREA)
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- Semiconductor Memories (AREA)
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Abstract
【解決手段】半導体基板上に形成された第1ポリシリコンパターン、誘電体膜及び第2ポリシリコンパターンで構成されたゲートと、前記第1ポリシリコンパターンの間に形成されて、前記半導体基板に挿入されてラインの形態に形成された複数の電極と、及びそれぞれの電極ごとに一つずつ形成されたコンタクトを含む。
【選択図】図6
Description
Claims (14)
- 半導体基板上に形成された第1ポリシリコンパターン、誘電体膜及び第2ポリシリコンパターンで構成されたゲートと、前記第1ポリシリコンパターンの間に形成されて、前記半導体基板に挿入されてライン(line)の形態に形成された複数の電極と、それぞれの電極ごとに一つずつ形成されたコンタクトを含むNOR型フラッシュメモリ素子。
- 前記誘電体膜は、第1酸化膜、窒化膜及び第2酸化膜の積層で構成されたONO(Oxide-Nitride-Oxide)膜に形成されて、前記第1酸化膜は、前記半導体基板の電極と接する領域が、前記第1ポリシリコンパターンと接する領域より厚く形成されたことを含む、請求項1に記載のNOR型フラッシュメモリ素子。
- 前記半導体基板の電極と接する領域の前記第1酸化膜は、250〜300Åの厚さに形成されることを含む、請求項2に記載のNOR型フラッシュメモリ素子。
- 前記電極は、前記第2ポリシリコンパターンと交差するパターンに形成されたことを含む、請求項1に記載のNOR型フラッシュメモリ素子。
- 前記電極は、イオンが注入されて形成されたことを含む、請求項1に記載のNOR型フラッシュメモリ素子。
- 素子分離膜が形成された半導体基板上にトンネル酸化膜を形成する段階と、前記トンネル酸化膜上に第1ポリシリコンパターンを形成する段階と、前記第1ポリシリコンパターンをマスクで前記半導体基板上にイオン注入工程を行い、前記第1ポリシリコンパターンの間の前記半導体基板に電極を形成する段階と、前記トンネル酸化膜及び第1ポリシリコンパターンが形成された前記半導体基板上に誘電体膜及び第2ポリシリコンパターンを形成する段階と、それぞれの電極ごとに一つのコンタクトを形成する段階を含むNOR型フラッシュメモリ素子の製造方法。
- 前記誘電体膜は、第1酸化膜、窒化膜及び第2酸化膜の積層で形成されたONO膜に形成されることを含む、請求項6に記載のNOR型フラッシュメモリ素子の製造方法。
- 前記第1酸化膜は、熱酸化(thermal oxidation)工程を通じて形成されて、前記半導体基板の電極と接する領域が、前記第1ポリシリコンパターンと接する領域より厚く形成されたことを含む、請求項7に記載のNOR型フラッシュメモリ素子の製造方法。
- 前記半導体基板の電極と接する領域の前記第1酸化膜は、250〜300Åの厚さに形成されることを含む、請求項7に記載のNOR型フラッシュメモリ素子の製造方法。
- 前記第2ポリシリコンパターンは、前記第1ポリシリコンパターン及び誘電体膜が形成された前記半導体基板上に第2ポリシリコンを形成して、前記第2ポリシリコンにエッチング工程を通じて形成されて、厚く形成された前記第1酸化膜が前記電極を保護して、前記エッチング工程時、前記電極の損傷(damage)を保護することを含む、請求項7に記載のNOR型フラッシュメモリ素子の製造方法。
- 前記第1酸化膜を形成するための熱酸化(thermal oxidation)工程時、前記イオン注入で形成された電極の活性化が行われる、請求項7に記載のNOR型フラッシュメモリ素子の製造方法。
- 前記窒化膜は、LPCVD(Low Pressure Chemical Vapor Deposition)工程に形成されて、前記第2酸化膜はCVD(Chemical Vapor Deposition)工程で形成されることを含む、請求項7に記載のNOR型フラッシュメモリ素子の製造方法。
- 前記電極は、砒素(As)イオンを1×1015〜5×1015atoms/cm2の濃度と20〜40KeVのエネルギーで注入して形成される、請求項6に記載のNOR型フラッシュメモリ素子の製造方法。
- 前記電極は、前記第1ポリシリコンパターンを利用して自己整列(self-align)方法で形成されて、フローティングゲートである前記第1ポリシリコンパターンとのオーバレイ(overlay)が一致する、請求項6に記載のNOR型フラッシュメモリ素子の製造方法。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020070081597A KR100871547B1 (ko) | 2007-08-14 | 2007-08-14 | 노어 플래시 메모리 소자 및 그 제조 방법 |
Publications (1)
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JP2009049407A true JP2009049407A (ja) | 2009-03-05 |
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JP2008208465A Pending JP2009049407A (ja) | 2007-08-14 | 2008-08-13 | Nor型フラッシュメモリ素子及びその製造方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8164955B2 (ja) |
JP (1) | JP2009049407A (ja) |
KR (1) | KR100871547B1 (ja) |
CN (1) | CN101369585A (ja) |
DE (1) | DE102008038752B4 (ja) |
TW (1) | TW200908240A (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103390589B (zh) * | 2012-05-09 | 2015-08-26 | 无锡华润上华半导体有限公司 | Nor结构闪存及其制备方法 |
CN104183552B (zh) * | 2013-05-23 | 2017-09-19 | 北京兆易创新科技股份有限公司 | Nor型闪存存储单元及其制造方法 |
CN103904037A (zh) * | 2014-04-04 | 2014-07-02 | 武汉新芯集成电路制造有限公司 | Nor闪存的制造方法 |
CN104409460A (zh) * | 2014-10-20 | 2015-03-11 | 中国科学院微电子研究所 | 闪存单元及闪存装置 |
JP6613116B2 (ja) * | 2014-12-02 | 2019-11-27 | 株式会社半導体エネルギー研究所 | 半導体装置、及び半導体装置の作製方法 |
US11069704B2 (en) * | 2019-04-09 | 2021-07-20 | Macronix International Co., Ltd. | 3D NOR memory having vertical gate structures |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07221210A (ja) * | 1993-12-10 | 1995-08-18 | Advanced Micro Devices Inc | 不揮発性メモリを製造するための方法および不揮発性メモリアレイ |
JPH0878543A (ja) * | 1994-08-31 | 1996-03-22 | Nkk Corp | 不揮発性半導体メモリ装置及びその製造方法 |
JP2003282741A (ja) * | 2002-03-20 | 2003-10-03 | Fujitsu Ltd | 半導体記憶装置及びその製造方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5661060A (en) * | 1994-12-28 | 1997-08-26 | National Semiconductor Corporation | Method for forming field oxide regions |
KR0172271B1 (ko) * | 1995-04-25 | 1999-02-01 | 김주용 | 플래쉬 이이피롬 셀의 제조방법 |
EP0741415A1 (en) * | 1995-05-05 | 1996-11-06 | STMicroelectronics S.r.l. | Flash-EEPROM memory with contactless memory cells |
US6133604A (en) * | 1999-04-20 | 2000-10-17 | Taiwan Semiconductor Manufacturing Corporation | NOR array architecture and operation methods for ETOX cells capable of full EEPROM functions |
US6242307B1 (en) * | 1999-08-23 | 2001-06-05 | United Microelectronics Corp. | Method of fabricating flash memory |
KR20020057341A (ko) * | 2001-01-04 | 2002-07-11 | 윤종용 | 노어형 플래시 메모리 소자 및 그 제조방법 |
US6897514B2 (en) * | 2001-03-28 | 2005-05-24 | Matrix Semiconductor, Inc. | Two mask floating gate EEPROM and method of making |
US6674138B1 (en) * | 2001-12-31 | 2004-01-06 | Advanced Micro Devices, Inc. | Use of high-k dielectric materials in modified ONO structure for semiconductor devices |
JP4233381B2 (ja) * | 2003-05-21 | 2009-03-04 | 株式会社ルネサステクノロジ | 半導体装置とその製造方法 |
DE112004003021T5 (de) | 2004-11-30 | 2007-10-31 | Spansion Llc, Sunnyvale | Halbleiterspeicher und Verfahren zu dessen Herstellung |
KR100640620B1 (ko) * | 2004-12-27 | 2006-11-02 | 삼성전자주식회사 | 트윈비트 셀 구조의 nor형 플래쉬 메모리 소자 및 그제조 방법 |
KR100667894B1 (ko) | 2005-12-22 | 2007-01-11 | 매그나칩 반도체 유한회사 | 안티퓨즈 원타임 프로그래머블 메모리 및 그 제조방법 |
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2007
- 2007-08-14 KR KR1020070081597A patent/KR100871547B1/ko not_active IP Right Cessation
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2008
- 2008-08-12 US US12/189,955 patent/US8164955B2/en active Active
- 2008-08-12 DE DE102008038752A patent/DE102008038752B4/de not_active Expired - Fee Related
- 2008-08-13 TW TW097130848A patent/TW200908240A/zh unknown
- 2008-08-13 JP JP2008208465A patent/JP2009049407A/ja active Pending
- 2008-08-14 CN CNA2008101459635A patent/CN101369585A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07221210A (ja) * | 1993-12-10 | 1995-08-18 | Advanced Micro Devices Inc | 不揮発性メモリを製造するための方法および不揮発性メモリアレイ |
JPH0878543A (ja) * | 1994-08-31 | 1996-03-22 | Nkk Corp | 不揮発性半導体メモリ装置及びその製造方法 |
JP2003282741A (ja) * | 2002-03-20 | 2003-10-03 | Fujitsu Ltd | 半導体記憶装置及びその製造方法 |
Also Published As
Publication number | Publication date |
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US8164955B2 (en) | 2012-04-24 |
KR100871547B1 (ko) | 2008-12-01 |
US20090046515A1 (en) | 2009-02-19 |
CN101369585A (zh) | 2009-02-18 |
TW200908240A (en) | 2009-02-16 |
DE102008038752A1 (de) | 2009-02-26 |
DE102008038752B4 (de) | 2011-08-25 |
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