JP4945619B2 - 半導体記憶装置 - Google Patents
半導体記憶装置 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 56
- 229910052751 metal Inorganic materials 0.000 claims description 51
- 239000002184 metal Substances 0.000 claims description 51
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- 239000010410 layer Substances 0.000 description 67
- 230000002093 peripheral effect Effects 0.000 description 18
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- 239000011229 interlayer Substances 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 150000002500 ions Chemical class 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 150000001768 cations Chemical class 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 239000012790 adhesive layer Substances 0.000 description 3
- 150000001450 anions Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- -1 chalcogenide compound Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 229910019001 CoSi Inorganic materials 0.000 description 1
- 241000877463 Lanio Species 0.000 description 1
- 229910005883 NiSi Inorganic materials 0.000 description 1
- 241001656823 Ornithostaphylos Species 0.000 description 1
- 241000255969 Pieris brassicae Species 0.000 description 1
- 229910004121 SrRuO Inorganic materials 0.000 description 1
- 229910004491 TaAlN Inorganic materials 0.000 description 1
- 229910010037 TiAlN Inorganic materials 0.000 description 1
- 229910008812 WSi Inorganic materials 0.000 description 1
- 238000005280 amorphization Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001940 conductive polymer Polymers 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- ZXOKVTWPEIAYAB-UHFFFAOYSA-N dioxido(oxo)tungsten Chemical group [O-][W]([O-])=O ZXOKVTWPEIAYAB-UHFFFAOYSA-N 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
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- 229910052737 gold Inorganic materials 0.000 description 1
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- 230000010354 integration Effects 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical group O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052609 olivine Inorganic materials 0.000 description 1
- 239000010450 olivine Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- H01L27/06—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 potential barriers; including integrated passive circuit elements having potential barriers 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- 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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- 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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/821—Device geometry
- H10N70/826—Device geometry adapted for essentially vertical current flow, e.g. sandwich or pillar type devices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/20—Multistable switching devices, e.g. memristors
- H10N70/24—Multistable switching devices, e.g. memristors based on migration or redistribution of ionic species, e.g. anions, vacancies
- H10N70/245—Multistable switching devices, e.g. memristors based on migration or redistribution of ionic species, e.g. anions, vacancies the species being metal cations, e.g. programmable metallization cells
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/881—Switching materials
- H10N70/883—Oxides or nitrides
- H10N70/8836—Complex metal oxides, e.g. perovskites, spinels
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Semiconductor Memories (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Description
図1は、本発明の第1の実施形態に係る半導体メモリのブロック図である。
図10は、本発明の第2の実施形態に係る半導体メモリのワード線WL、ビット線BL及びビア配線VLの接続を示す概略図であり、積層方向−ビット線BL方向の断面図である。なお、説明の便宜上、ワード線WLの配線引き出し部分については、積層方向−ワード線WL方向の断面図を示している。
本発明の第3の実施形態では、ワード線WLに接続される第1のビア配線VLwについては、このビア配線VLwの“断面”の長径ra方向をワード線WLに垂直になるように形成する一方、ビット線BLに接続される第2のビア配線VLbについては、このビア配線VLbの“断面”の長径ra方向をビット線BLに平行になるように形成する。
以上では、第1の配線をワード線、第2の配線をビット線として説明したが、第1の配線をビット線、第2の配線をワード線とした場合であっても、同様の効果を得ることができる。
Claims (7)
- 半導体基板と、
前記半導体基板上に前記半導体基板と垂直方向にそれぞれ複数層形成された互いに交差する複数の第1及び第2の配線、並びにこれら第1及び第2の配線の各交差部に接続された複数のメモリセルを有するセルアレイブロックと、
前記セルアレイブロックの積層方向に伸びる複数のビア配線と
を備え、
前記複数のビア配線のうち、一部の前記ビア配線は、前記セルアレイブロックの第n層目(nは自然数)の第1の配線と前記第n層目とは異なる層の第1の配線、前記半導体基板、又は他の金属配線とを接続する前記セルアレイブロックの積層方向に延びる第1のビア配線であり、
前記第1のビア配線は、前記セルアレイブロックの積層方向と直交する断面が楕円形状であり、この断面の長径方向が前記第1の配線方向に対し垂直である
ことを特徴とする半導体記憶装置。 - 前記複数のビア配線のうち、一部の前記ビア配線は、前記セルアレイブロックの第m層目(mは自然数)の第2の配線と前記第m層目とは異なる層の第2の配線、前記半導体基板、又は他の金属配線とを接続する前記セルアレイブロックの積層方向に延びる第2のビア配線であり、
前記第2のビア配線は、前記セルアレイブロックの積層方向と直交する断面が楕円形状であり、この断面の長径方向が前記第2の配線方向に対し垂直である
ことを特徴とする請求項1記載の半導体記憶装置。 - 前記複数のビア配線のうち、一部の前記ビア配線は、前記セルアレイブロックの第m層目(mは自然数)の第2の配線と前記第m層目とは異なる層の第2の配線、前記半導体基板、又は他の金属配線とを接続する前記セルアレイブロックの積層方向に延びる第2のビア配線であり、
前記第2のビア配線は、前記セルアレイブロックの積層方向と直交する断面が楕円形状であり、この断面の長径方向が前記第1の配線方向に対し垂直である
ことを特徴とする請求項1記載の半導体記憶装置。 - 前記複数のビア配線のうち、一部の前記ビア配線は、前記第1の配線の層、前記第2の配線の層、又は他の金属配線の層の少なくとも一つからなる中間配線層を貫通するように形成されている
ことを特徴とする請求項1〜3のいずれか1項記載の半導体記憶装置。 - 前記中間配線層の前記第1の配線、前記第2の配線及び前記金属配線の一部は、前記ビア配線に接続するビア配線接続部を有し、
前記ビア配線接続部は、前記ビア配線の断面の長径の両端に接する2つの板状部分を有する
ことを特徴とする請求項4記載の半導体記憶装置。 - 前記中間配線層の前記第1の配線、前記第2の配線及び前記金属配線の一部は、前記ビア配線に接続するビア配線接続部を有し、
前記ビア配線接続部は、前記ビア配線の断面の長径の一端に接する1つの板状部分を有する
ことを特徴とする請求項4記載の半導体記憶装置。 - 複数の前記ビア配線のうち、一部の前記ビア配線は、前記中間配線層となる第1の配線、第2の配線又は他の金属配線との接続箇所が前記一部のビア配線よりも多い他の前記ビア配線に比べ、断面の長径が短い
ことを特徴とする請求項4〜6のいずれか1項記載の半導体記憶装置。
Priority Applications (2)
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JP2009219263A JP4945619B2 (ja) | 2009-09-24 | 2009-09-24 | 半導体記憶装置 |
US12/886,090 US8441040B2 (en) | 2009-09-24 | 2010-09-20 | Semiconductor memory device |
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JP2009219263A JP4945619B2 (ja) | 2009-09-24 | 2009-09-24 | 半導体記憶装置 |
Publications (2)
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JP2011071207A JP2011071207A (ja) | 2011-04-07 |
JP4945619B2 true JP4945619B2 (ja) | 2012-06-06 |
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JP2009219263A Expired - Fee Related JP4945619B2 (ja) | 2009-09-24 | 2009-09-24 | 半導体記憶装置 |
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US (1) | US8441040B2 (ja) |
JP (1) | JP4945619B2 (ja) |
Families Citing this family (38)
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JP4167298B2 (ja) * | 2006-11-20 | 2008-10-15 | 松下電器産業株式会社 | 不揮発性半導体記憶装置およびその製造方法 |
JP5322533B2 (ja) | 2008-08-13 | 2013-10-23 | 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 |
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US8841196B1 (en) | 2010-09-29 | 2014-09-23 | Crossbar, Inc. | Selective deposition of silver for non-volatile memory device fabrication |
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USRE46335E1 (en) | 2010-11-04 | 2017-03-07 | Crossbar, Inc. | Switching device having a non-linear element |
US8502185B2 (en) | 2011-05-31 | 2013-08-06 | Crossbar, Inc. | Switching device having a non-linear element |
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JP2012248620A (ja) * | 2011-05-26 | 2012-12-13 | Toshiba Corp | 半導体記憶装置の製造方法 |
JP5595977B2 (ja) | 2011-05-27 | 2014-09-24 | 株式会社東芝 | 半導体記憶装置、その製造方法及びコンタクト構造の形成方法 |
US9620206B2 (en) | 2011-05-31 | 2017-04-11 | Crossbar, Inc. | Memory array architecture with two-terminal memory cells |
US8619459B1 (en) | 2011-06-23 | 2013-12-31 | Crossbar, Inc. | High operating speed resistive random access memory |
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JP2014150234A (ja) * | 2013-01-30 | 2014-08-21 | Toshiba Corp | 不揮発性記憶装置およびその製造方法 |
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JP2021150493A (ja) | 2020-03-19 | 2021-09-27 | キオクシア株式会社 | 半導体記憶装置 |
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JP2011071207A (ja) | 2011-04-07 |
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