JP2020532863A - 三次元メモリアレイ - Google Patents
三次元メモリアレイ Download PDFInfo
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- JP2020532863A JP2020532863A JP2020511793A JP2020511793A JP2020532863A JP 2020532863 A JP2020532863 A JP 2020532863A JP 2020511793 A JP2020511793 A JP 2020511793A JP 2020511793 A JP2020511793 A JP 2020511793A JP 2020532863 A JP2020532863 A JP 2020532863A
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- 239000004020 conductor Substances 0.000 claims abstract description 141
- 239000011232 storage material Substances 0.000 claims abstract description 104
- 239000003989 dielectric material Substances 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 11
- 150000004770 chalcogenides Chemical class 0.000 claims description 10
- 238000005240 physical vapour deposition Methods 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 description 17
- 230000015572 biosynthetic process Effects 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 238000003860 storage Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 150000004767 nitrides Chemical class 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- 239000011810 insulating material Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000000231 atomic layer deposition Methods 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000001465 metallisation Methods 0.000 description 3
- 239000012782 phase change material Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 229910000449 hafnium oxide Inorganic materials 0.000 description 2
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 238000010561 standard procedure Methods 0.000 description 2
- 229910052714 tellurium Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- -1 Zirconium (Zr) Metals Chemical class 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
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- H10B—ELECTRONIC MEMORY DEVICES
- H10B63/00—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices
- H10B63/20—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices comprising selection components having two electrodes, e.g. diodes
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- H10B—ELECTRONIC MEMORY DEVICES
- H10B63/00—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices
- H10B63/80—Arrangements comprising multiple bistable or multi-stable switching components of the same type on a plane parallel to the substrate, e.g. cross-point arrays
- H10B63/84—Arrangements comprising multiple bistable or multi-stable switching components of the same type on a plane parallel to the substrate, e.g. cross-point arrays arranged in a direction perpendicular to the substrate, e.g. 3D cell arrays
- H10B63/845—Arrangements comprising multiple bistable or multi-stable switching components of the same type on a plane parallel to the substrate, e.g. cross-point arrays arranged in a direction perpendicular to the substrate, e.g. 3D cell arrays the switching components being connected to a common vertical conductor
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- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier
- 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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body
- H01L27/06—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 at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
- H01L27/0688—Integrated circuits having a three-dimensional layout
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L25/03—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes
- H01L25/04—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers
- H01L25/065—Assemblies consisting of a plurality of individual semiconductor or other solid state devices ; Multistep manufacturing processes thereof all the devices being of a type provided for in the same subgroup of groups H01L27/00 - H01L33/00, or in a single subclass of H10K, H10N, e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group H01L27/00
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- H10B—ELECTRONIC MEMORY DEVICES
- H10B63/00—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices
- H10B63/30—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices comprising selection components having three or more electrodes, e.g. transistors
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- H10N70/20—Multistable switching devices, e.g. memristors
- H10N70/231—Multistable switching devices, e.g. memristors based on solid-state phase change, e.g. between amorphous and crystalline phases, Ovshinsky effect
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- H10N70/826—Device geometry adapted for essentially vertical current flow, e.g. sandwich or pillar type devices
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- H10N70/882—Compounds of sulfur, selenium or tellurium, e.g. chalcogenides
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Abstract
Description
Claims (21)
- メモリアレイであって、
複数の第1の誘電体材料及び複数のスタックであって、それぞれの各第1の誘電体材料とそれぞれの各スタックが交互に配置され、それぞれの各スタックは第1の導電性材料及び記憶材料を含む、前記複数の第1の誘電体材料及び複数のスタック、及び
前記複数の第1の誘電体材料及び前記複数のスタックを通り抜ける第2の導電性材料を含み、
それぞれの各スタックは、前記第1の導電性材料と前記第2の導電性材料との間に第2の誘電体材料をさらに含む、前記メモリアレイ。 - 前記記憶材料が、前記第1の導電性材料の片側のみにあり、
前記第2の導電性材料が、前記記憶材料に垂直である、
請求項1に記載のメモリアレイ。 - 前記第2の導電性材料と前記複数のスタックの間、及び前記第2の導電性材料と前記複数の第1の誘電体材料の間に第3の誘電体材料をさらに含む、請求項1〜2のいずれか一項に記載のメモリアレイ。
- それぞれの各スタックが、前記第1の導電性材料と前記記憶材料との間に第3の誘電体材料をさらに含む、請求項1〜2のいずれか一項に記載のメモリアレイ。
- 前記第1の導電性材料及び前記記憶材料は、それぞれの各スタック内部で異なるレベルにある、請求項1〜2のいずれか一項に記載のメモリアレイ。
- 前記記憶材料が自己選択記憶材料である、請求項1〜2のいずれか一項に記載のメモリアレイ。
- 前記記憶材料がカルコゲナイド材料を含む、請求項1〜2のいずれか一項に記載のメモリアレイ。
- メモリアレイであって、
メモリセルのスタック、及び
第1の導電性材料
を含み、
それぞれの各メモリセルが、
前記第1の導電性材料の異なる部分、
記憶材料、
前記記憶材料上の第2の導電性材料、及び
前記記憶材料上及び前記第2の導電性材料と前記第1の導電性材料との間の誘電体材料
を含む、前記メモリアレイ。 - 前記メモリセルが、追加の誘電体材料によって互いに分離されている、請求項8に記載のメモリアレイ。
- 前記誘電体材料が第1の誘電体材料であり、
それぞれの各メモリセルは、前記第1の導電性材料と前記第1の誘電体材料との間、及び前記第1の導電性材料と前記記憶材料との間に第2の誘電体材料の異なる部分をさらに含む、
請求項8に記載のメモリアレイ。 - 前記第1の誘電体材料が、前記第2の導電性材料及び前記第2の誘電体材料と直接物理的に接触しており、
前記第2の誘電体材料が、前記第1の誘電体材料に垂直である、
請求項10に記載のメモリアレイ。 - それぞれの各メモリセルが、前記第2の導電性材料と前記記憶材料との間に追加の誘電体材料をさらに含む、請求項8、10、及び11のいずれか一項に記載のメモリアレイ。
- 前記第1の導電性材料が、それぞれの各メモリセルの前記第2の導電性材料及び前記記憶材料に垂直である、請求項8、10、及び11のいずれか一項に記載のメモリアレイ。
- メモリアレイを形成する方法であって、
複数のスタック及び複数の第1の誘電体材料を形成することであって、それぞれの各スタックとそれぞれの各第1の誘電体材料とが交互に配置され、それぞれの各スタックを形成することは、記憶材料、前記記憶材料上の第1の導電性材料、及び前記第1の導電性材料に隣接する前記記憶材料上の第2の誘電体材料を形成することを含む、前記複数のスタック及び複数の第1の誘電体材料を形成すること、及び
前記複数のスタック及び前記複数の第1の誘電体材料を貫いて第2の導電性材料を形成することであって、それぞれの各スタックの前記第2の誘電体材料が前記第1の導電性材料と前記第2の導電性材料との間にある、前記第2の導電性材料を形成すること
を含む、前記方法。 - 前記第2の導電性材料を形成する前に、前記複数のスタック及び前記複数の第1の誘電体材料を貫いて第3の誘電体材料を形成することをさらに含み、
前記第2の導電性材料を形成することは、前記第3の誘電体材料が前記第2の導電性材料と前記複数のスタックとの間、及び前記第2の導電性材料と前記複数の第1の誘電体材料との間にあるように、前記第3の誘電体材料に隣接する前記第2の導電性材料を形成することを含む、請求項14に記載の方法。 - 前記第2の誘電体材料を形成することは、
前記第2の導電性材料を形成する前に前記第1の導電性材料を窪ませて前記第1の導電性材料に開口部を形成すること、及び
前記開口部に前記第2の誘電体材料を形成すること
を含む、請求項14に記載の方法。 - それぞれの各スタックを形成することは、前記記憶材料と前記第2の導電性材料との間、及び前記記憶材料と前記第2の誘電体材料との間に第3の誘電体材料を形成することをさらに含む、請求項14に記載の方法。
- 前記記憶材料を形成することが前記記憶材料を平坦に堆積させることを含む、請求項14〜17のいずれか一項に記載の方法。
- 前記記憶材料を形成することが物理蒸着を使用して前記記憶材料を形成することを含む、請求項14〜17のいずれか一項に記載の方法。
- 前記記憶材料を形成することが前記記憶材料を水平に形成することを含む、請求項14〜17のいずれか一項に記載の方法。
- メモリアレイを形成する方法であって、
複数のスタック及び複数の第1の誘電体材料を形成することであって、それぞれの各スタック及びそれぞれの各第1の誘電体材料が交互になり、それぞれの各スタックが第1の導電性材料及び記憶材料を含む、前記複数のスタック及び前記複数の第1の誘電体材料を形成すること、
前記複数のスタック及び前記複数の第1の誘電体材料を貫通する第1の開口部を形成すること、
それぞれの各スタックの前記第1の導電性材料の一部を除去して、それぞれの各スタックに第2の開口部を形成すること、
それぞれの各スタックの前記第2の開口部に第2の誘電体材料を形成すること、及び
それぞれの各スタックの前記第2の誘電体材料及びそれぞれの各スタックの前記記憶材料に隣接する、第2の導電性材料を前記第1の開口部に形成すること
を含む、前記方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/689,155 US10461125B2 (en) | 2017-08-29 | 2017-08-29 | Three dimensional memory arrays |
US15/689,155 | 2017-08-29 | ||
PCT/US2018/047143 WO2019046030A1 (en) | 2017-08-29 | 2018-08-21 | THREE DIMENSIONAL MEMORY NETWORKS |
Publications (2)
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US11244953B2 (en) | 2020-02-26 | 2022-02-08 | Sandisk Technologies Llc | Three-dimensional memory device including molybdenum word lines and metal oxide spacers and method of making the same |
US11569260B2 (en) | 2020-02-26 | 2023-01-31 | Sandisk Technologies Llc | Three-dimensional memory device including discrete memory elements and method of making the same |
JP2021150346A (ja) * | 2020-03-16 | 2021-09-27 | キオクシア株式会社 | 半導体記憶装置 |
US11355554B2 (en) | 2020-05-08 | 2022-06-07 | Micron Technology, Inc. | Sense lines in three-dimensional memory arrays, and methods of forming the same |
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CN111052376B (zh) | 2023-08-08 |
EP3676871B1 (en) | 2024-04-17 |
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KR102233131B1 (ko) | 2021-03-30 |
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WO2019046030A1 (en) | 2019-03-07 |
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US20190378877A1 (en) | 2019-12-12 |
TW201921651A (zh) | 2019-06-01 |
US11765912B2 (en) | 2023-09-19 |
US20190067371A1 (en) | 2019-02-28 |
EP3676871A4 (en) | 2021-05-19 |
US10461125B2 (en) | 2019-10-29 |
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US10937829B2 (en) | 2021-03-02 |
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