KR100673205B1 - 플래쉬 메모리소자의 제조방법 - Google Patents
플래쉬 메모리소자의 제조방법 Download PDFInfo
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- KR100673205B1 KR100673205B1 KR1020040097158A KR20040097158A KR100673205B1 KR 100673205 B1 KR100673205 B1 KR 100673205B1 KR 1020040097158 A KR1020040097158 A KR 1020040097158A KR 20040097158 A KR20040097158 A KR 20040097158A KR 100673205 B1 KR100673205 B1 KR 100673205B1
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 74
- 238000000137 annealing Methods 0.000 claims abstract description 31
- 150000004767 nitrides Chemical class 0.000 claims abstract description 28
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 26
- 229920005591 polysilicon Polymers 0.000 claims abstract description 26
- 239000004065 semiconductor Substances 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 23
- 238000005468 ion implantation Methods 0.000 claims abstract description 20
- 238000005530 etching Methods 0.000 claims abstract description 5
- 239000012299 nitrogen atmosphere Substances 0.000 claims abstract description 5
- 238000000059 patterning Methods 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 3
- 229910021332 silicide Inorganic materials 0.000 claims abstract description 3
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 11
- 239000012298 atmosphere Substances 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 5
- 238000009279 wet oxidation reaction Methods 0.000 claims description 5
- 230000001351 cycling effect Effects 0.000 abstract description 26
- 230000014759 maintenance of location Effects 0.000 abstract description 13
- 150000002500 ions Chemical class 0.000 abstract description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 28
- 238000004140 cleaning Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 3
- 229910021342 tungsten silicide Inorganic materials 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 238000001039 wet etching Methods 0.000 description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
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- H—ELECTRICITY
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- H10B99/00—Subject matter not provided for in other groups of this subclass
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/10—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration
- H01L27/105—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration including field-effect components
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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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/02126—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material containing Si, O, and at least one of H, N, C, F, or other non-metal elements, e.g. SiOC, SiOC:H or SiONC
- H01L21/0214—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material containing Si, O, and at least one of H, N, C, F, or other non-metal elements, e.g. SiOC, SiOC:H or SiONC the material being a silicon oxynitride, e.g. SiON or SiON:H
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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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02296—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer
- H01L21/02318—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment
- H01L21/02321—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment introduction of substances into an already existing insulating layer
- H01L21/02329—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment introduction of substances into an already existing insulating layer introduction of nitrogen
- H01L21/02332—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment introduction of substances into an already existing insulating layer introduction of nitrogen into an oxide layer, e.g. changing SiO to SiON
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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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02296—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer
- H01L21/02318—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment
- H01L21/02337—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment treatment by exposure to a gas or vapour
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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
- H01L21/30—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
- H01L21/314—Inorganic layers
- H01L21/3143—Inorganic layers composed of alternated layers or of mixtures of nitrides and oxides or of oxinitrides, e.g. formation of oxinitride by oxidation of nitride layers
- H01L21/3144—Inorganic layers composed of alternated layers or of mixtures of nitrides and oxides or of oxinitrides, e.g. formation of oxinitride by oxidation of nitride layers on silicon
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- H10B—ELECTRONIC MEMORY DEVICES
- H10B41/00—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates
- H10B41/40—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by the peripheral circuit region
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- 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
- H10B41/40—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by the peripheral circuit region
- H10B41/42—Simultaneous manufacture of periphery and memory cells
- H10B41/43—Simultaneous manufacture of periphery and memory cells comprising only one type of peripheral transistor
- H10B41/48—Simultaneous manufacture of periphery and memory cells comprising only one type of peripheral transistor with a tunnel dielectric layer also being used as part of the peripheral transistor
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- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Semiconductor Memories (AREA)
- Non-Volatile Memory (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Abstract
Description
한편, 균일한 두께 및 질소 농도를 갖는 터널 산화막을 형성하기 위해서는 배치내의 특성 영역에서만 터널 산화막 공정을 실시해야 하기 때문에 최대 5개 로트(lot)의 프로세싱(processing)이 가능한 배치에서 실제로 프로세싱되는 로트 수는 2개에 불과하여 양산 능력이 떨어진다.
다음에, 도 1 내지 도 3을 참조하여 종래 기술의 문제점들의 보다 구체적으로 살펴보면 다음과 같다.
도 1은 종래 기술에 의해 제조된 터널 산화막의 두께 및 질소농도를 배치별로 나타내는 표이다.
본 발명의 다른 목적은 문턱전압 쉬프트 및 특성 변화를 줄일 수 있는 플래쉬 메모리소자의 제조방법을 제공하는데 그 목적이 있다.
예를 들어, 상기 반도체 기판(10)이 p형 도전형인 경우, p형 도전형의 반도체 기판(10)의 일정 영역에 P31 이온을 주입하여 트리플(triple) n웰을 형성하고, 상기 트리플 n웰 내에 B11 이온을 주입하여 p웰을 형성한다.
이어서, 상기 순수 산화막을 질화시키기 위하여 다음 3 단계의 어닐 공정을 수행한다.
Claims (7)
- 셀 영역, 저전압 영역 및 고전압영역이 구비된 반도체 기판 전면에 산화막을 형성하는 단계;상기 고전압 영역 상부에 상기 산화막의 일부가 잔류하도록 식각 공정을 실시하는 단계;전체 구조 상부에 순수 산화막을 형성한 후 질소 분위기의 프리 어닐 공정, 메인 어닐 공정 및 포스트 어닐 공정을 순차적으로 수행하여 질화 산화막을 형성하여 상기 고전압 영역에는 상기 산화막 및 질화 산화막으로 이루어진 게이트 산화막을, 그 이외의 영역에는 상기 질화 산화막으로 이루어진 터널 산화막을 형성하는 단계;전체 구조 상부에 제1 폴리 실리콘막, 제2 폴리 실리콘막, 유전체막, 제3 폴리 실리콘막 및 금속실리사이드막을 순차적으로 형성한 후 패터닝하여 플로팅 게이트전극 및 콘트롤 게이트전극을 형성하는 단계; 및상기 게이트 전극을 이온주입 마스크로 이온 주입하여 소스/드레인 영역을 형성하는 단계를 포함하는 플래쉬 메모리소자의 제조방법.
- 제1 항에 있어서, 상기 순수 산화막은750~ 850℃의 온도에서 습식산화공정을 실시하고, 900~ 910℃의 온도에서 20~ 30분간 N2 어닐 공정을 수행하여 60~ 90Å두께로 형성하고, 상기 질화 산화막은 70~ 100Å 두께로 형성하는 플래쉬 메모리소자의 제조방법.
- 제1 항에 있어서, 상기 프리 어닐 공정은850~ 950℃의 온도에서 N2가스 분위기로 5분간 실시하는 플래쉬 메모리소자의 제조방법.
- 제1 항에 있어서, 상기 메인 어닐 공정은850~ 950℃의 온도와, 10slm 유랑의 N2O가스 분위기에서 35분간 실시하는 플래쉬 메모리소자의 제조방법.
- 제1 항에 있어서, 상기 포스트 어닐 공정은950~ 1000℃의 온도에서 N2가스 분위기로 5분간 실시하는 플래쉬 메모리소자의 제조방법.
- 제1 항에 있어서, 상기 제2 폴리 실리콘막을 형성하는 단계 이전에,상기 제1 폴리 실리콘막이 형성된 결과물에 대하여 소자분리영역을 정의하도록 상기 제1 폴리 실리콘막, 터널 산화막 및 반도체 기판의 일부를 패터닝하여 트렌치를 형성하는 단계; 및상기 트랜치 내에 산화막을 매립하여 소자분리막을 형성하는 단계를 더 포함하는 플래쉬 메모리소자의 제조방법.
- 셀 영역, 저전압 영역 및 고전압 영역이 구비된 반도체 기판 전면에 산화막을 형성하는 단계; 및질소 분위기의 3 단계 어닐 공정인 프리, 메인 및 포스트 어닐 공정을 실시하여 상기 산화막을 질화 산화막으로 변경하는 단계를 포함하는 플래쉬 메모리소자의 제조방법.
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KR1020040097158A KR100673205B1 (ko) | 2004-11-24 | 2004-11-24 | 플래쉬 메모리소자의 제조방법 |
DE102005021988A DE102005021988A1 (de) | 2004-11-24 | 2005-05-09 | Verfahren zur Herstellung eines Flash-Speicherbauelements |
US11/129,939 US7268090B2 (en) | 2004-11-24 | 2005-05-16 | Method of manufacturing flash memory device |
JP2005150605A JP4875856B2 (ja) | 2004-11-24 | 2005-05-24 | フラッシュメモリ素子の製造方法 |
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DE (1) | DE102005021988A1 (ko) |
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KR100678632B1 (ko) * | 2005-06-23 | 2007-02-05 | 삼성전자주식회사 | 반도체 집적 회로 장치의 제조 방법 |
JP2007180482A (ja) * | 2005-12-28 | 2007-07-12 | Hynix Semiconductor Inc | フラッシュメモリ素子の製造方法 |
US7816211B2 (en) | 2007-01-26 | 2010-10-19 | Freescale Semiconductor, Inc. | Method of making a semiconductor device having high voltage transistors, non-volatile memory transistors, and logic transistors |
US7439134B1 (en) * | 2007-04-20 | 2008-10-21 | Freescale Semiconductor, Inc. | Method for process integration of non-volatile memory cell transistors with transistors of another type |
KR100870297B1 (ko) * | 2007-04-27 | 2008-11-25 | 주식회사 하이닉스반도체 | 반도체 소자의 제조 방법 |
KR101283574B1 (ko) | 2007-08-09 | 2013-07-08 | 삼성전자주식회사 | 질소를 함유하는 절연막 형성 방법 및 그것을 포함하는플래시 메모리 소자의 제조 방법 |
KR20090086815A (ko) | 2008-02-11 | 2009-08-14 | 삼성전자주식회사 | 메모리 장치 및 메모리 열처리 방법 |
KR101435588B1 (ko) | 2008-06-23 | 2014-09-25 | 삼성전자주식회사 | 불휘발성 메모리 소자 및 그 제조방법 |
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JP2793441B2 (ja) * | 1992-08-17 | 1998-09-03 | 沖電気工業株式会社 | 絶縁膜形成方法 |
JP3024449B2 (ja) * | 1993-07-24 | 2000-03-21 | ヤマハ株式会社 | 縦型熱処理炉及び熱処理方法 |
JPH07335641A (ja) * | 1994-06-03 | 1995-12-22 | Sony Corp | シリコン酸化膜の形成方法及び半導体装置の酸化膜 |
JP4001960B2 (ja) * | 1995-11-03 | 2007-10-31 | フリースケール セミコンダクター インコーポレイテッド | 窒化酸化物誘電体層を有する半導体素子の製造方法 |
US6136728A (en) * | 1996-01-05 | 2000-10-24 | Yale University | Water vapor annealing process |
JPH11204787A (ja) * | 1998-01-14 | 1999-07-30 | Mitsubishi Electric Corp | 半導体装置およびその製造方法 |
JPH11354516A (ja) * | 1998-06-08 | 1999-12-24 | Sony Corp | シリコン酸化膜形成装置及びシリコン酸化膜形成方法 |
JP3472482B2 (ja) * | 1998-06-30 | 2003-12-02 | 富士通株式会社 | 半導体装置の製造方法と製造装置 |
KR100327329B1 (ko) * | 1998-12-11 | 2002-07-04 | 윤종용 | 저압하의실리콘산화막및산질화막형성방법 |
KR100682190B1 (ko) * | 1999-09-07 | 2007-02-12 | 동경 엘렉트론 주식회사 | 실리콘 산질화물을 포함하는 절연막의 형성 방법 및 장치 |
JP4713752B2 (ja) * | 2000-12-28 | 2011-06-29 | 財団法人国際科学振興財団 | 半導体装置およびその製造方法 |
JP2003023114A (ja) * | 2001-07-05 | 2003-01-24 | Fujitsu Ltd | 半導体集積回路装置およびその製造方法 |
KR100440698B1 (ko) * | 2001-07-25 | 2004-07-21 | 가부시끼가이샤 도시바 | 반도체 장치 및 그 제조 방법 |
US6780720B2 (en) * | 2002-07-01 | 2004-08-24 | International Business Machines Corporation | Method for fabricating a nitrided silicon-oxide gate dielectric |
KR100466312B1 (ko) * | 2002-08-07 | 2005-01-13 | 삼성전자주식회사 | 유전막을 갖는 반도체 장치의 제조방법 |
KR100470941B1 (ko) * | 2002-12-26 | 2005-03-10 | 주식회사 하이닉스반도체 | 옥시나이트라이드막 형성방법 |
JP2005203671A (ja) * | 2004-01-19 | 2005-07-28 | Semiconductor Leading Edge Technologies Inc | 半導体装置の製造方法 |
KR100538884B1 (ko) * | 2004-03-30 | 2005-12-23 | 주식회사 하이닉스반도체 | 플래쉬 메모리소자의 제조방법 |
KR100602322B1 (ko) * | 2004-04-20 | 2006-07-14 | 에스티마이크로일렉트로닉스 엔.브이. | 플래시 메모리 소자의 제조방법 및 이를 통해 제조된플래시 메모리 소자 |
US7033956B1 (en) * | 2004-11-01 | 2006-04-25 | Promos Technologies, Inc. | Semiconductor memory devices and methods for making the same |
US7361567B2 (en) * | 2005-01-26 | 2008-04-22 | Freescale Semiconductor, Inc. | Non-volatile nanocrystal memory and method therefor |
-
2004
- 2004-11-24 KR KR1020040097158A patent/KR100673205B1/ko active IP Right Grant
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2005
- 2005-05-09 DE DE102005021988A patent/DE102005021988A1/de not_active Withdrawn
- 2005-05-16 US US11/129,939 patent/US7268090B2/en active Active
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KR20060057958A (ko) | 2006-05-29 |
JP2006148044A (ja) | 2006-06-08 |
US20060110942A1 (en) | 2006-05-25 |
JP4875856B2 (ja) | 2012-02-15 |
US7268090B2 (en) | 2007-09-11 |
DE102005021988A1 (de) | 2006-06-01 |
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