JP2008521253A - ナノスケール抵抗メモリアレイを扱うためのダイオードアレイアーキテクチャ - Google Patents
ナノスケール抵抗メモリアレイを扱うためのダイオードアレイアーキテクチャ Download PDFInfo
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- G11C2213/50—Resistive cell structure aspects
- G11C2213/56—Structure including two electrodes, a memory active layer and a so called passive or source or reservoir layer which is NOT an electrode, wherein the passive or source or reservoir layer is a source of ions which migrate afterwards in the memory active layer to be only trapped there, to form conductive filaments there or to react with the material of the memory active layer in redox way
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- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/70—Resistive array aspects
- G11C2213/76—Array using an access device for each cell which being not a transistor and not a diode
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Abstract
Description
1.技術分野
この発明は、概して、メモリデバイスに関し、特に、抵抗メモリセルを組み込んだメモリアレイに関する。
一般的に、コンピュータおよびその他の電子機器に対応付けられたメモリデバイスが用いられて、それらの動作のための情報を記憶および保持している。典型的には、そのようなメモリデバイスはメモリセルのアレイを含んでおり、ここでは、各々のメモリセルにアクセスして、メモリデバイスのプログラミング、消去、および読出しを行うことができる。各々のメモリセルは、それぞれ「0」および「1」とも称する「オフ」状態または「オン」状態の情報を保持しており、この情報は、そのメモリセルの読出しステップ時に読み出すことができる。
れた状態にあることを示している。メモリセル30が消去されると、メモリセル30は電流を通さなくなり(レベルL2)、これはメモリセル30が消去された状態にあることを示している。
5)、導体BL0に印加される電圧は、導体WL0に印加される電圧(0)より大きく(Vr+Vt)、ここで、Vrは上記で定義したとおりであり、かつ、Vt=ダイオード5000の閾値電圧となる。さらに、電圧Vr+Vtが導体WL1、…WLnの各々に印加され、ゼロ電圧が導体BL1、…BLnの各々に印加される。この結果、(選択されたメモリセル3000およびダイオード5000構成以外の)導体BL1および導体WL0に接続されたメモリセル−ダイオード構成の各々に、ゼロ電位が印加される。その他のメモリセル−ダイオード構成の各々には、Vr+Vtと同等の電位が、ダイオード50の逆方向に、より高い電位からより低い電位へ印加される。この電位Vr+Vtは、ダイオード50のブレイクダウン電圧より小さいので、対応付けられたメモリセルに電流は流れない。よって、ダイオード50を組み込むことにより、あるメモリセルを適正に選択および読出しすることができ、そのアレイにおける他のメモリセルをいずれも妨げることはない。
概して言うと、このメモリ構成は、第1の導体と、第2の導体と、第2の導体に接続された抵抗メモリセルと、抵抗メモリセルおよび第1の導体に接続され、かつ、抵抗メモリセルから第1の導体へ順方向に配向された第1のダイオードと、抵抗メモリセルおよび第1の導体に、第1のダイオードと並行して接続され、かつ、抵抗メモリセルから第1の導体へ逆方向に配向された第2のダイオードとを含む。
および利点は、以下の例証的な実施例の詳細な説明を参照し、添付の図面と関連して読むことで、最もよく理解されるであろう。
ここで、発明者が現時点で考えるこの発明を実施するためのベストモードを示す、この発明のある特定の実施例を詳細に参照する。
が導体BL1、…BLnの各々に印加される。この結果、導体BL0および導体WL0に接続された(構成6000以外の)構成60の各々に、ゼロ電位が印加される。アレイ140におけるその他の構成60の各々には、Vpg+Vt1=1.6ボルトと同等の電位が、導体WLから導体BLの方向に、より高い電位からより低い電位へ印加される。この電位は、ダイオード134の閾値電圧Vt2(2ボルト)より小さく(かつ、ダイオード132のブレイクダウン電圧Vb、4.5ボルトより小さく)、よって、対応付けられたメモリセル130に電流は流れない。したがって、ダイオード構成60を組み込むことにより、あるメモリセルを適正に選択およびプログラミングすることができ、そのアレイにおける他のメモリセルをいずれも妨げることはなく、または別様で影響を与えることはない。
たは変形が可能である。
Claims (8)
- メモリ構成であって、
第1の導体(BL)と、
第2の導体(WL)と、
第2の導体(WL)に接続された抵抗メモリセル(130)と、
抵抗メモリセル(130)および第1の導体(BL)に接続され、かつ、抵抗メモリセル(130)から第1の導体(BL)へ順方向に配向された第1のダイオード(134)と、
第1のダイオード(134)と並行に、抵抗メモリセル(130)および第1の導体(BL)に接続され、かつ、抵抗メモリセル(130)から第1の導体(BL)へ逆方向に配向された第2のダイオード(132)とを含む、メモリ構成。 - 第1および第2のダイオード(134、132)は異なる閾値電圧を有する、請求項1に記載のメモリ構成。
- メモリ構成であって、
第1の導体(BL)と、
第2の導体(WL)と、
第2の導体(WL)に接続されたメモリセル(130)と、
メモリセル(130)および第1の導体(BL)に接続された第1のダイオード(134)と、
第1のダイオード(134)と並行に、メモリセル(130)および第1の導体(BL)に接続された第2のダイオード(132)とを含む、メモリ構成。 - 第1および第2のダイオード(134、132)は異なる閾値電圧を有する、請求項3に記載のメモリ構成。
- 第1のダイオード(134)は、メモリセル(130)から第1の導体(BL)へ順方向に配向され、第2のダイオード(132)は、メモリセル(130)から第1の導体(BL)へ逆方向に配向される、請求項4に記載のメモリ構成。
- メモリセル(130)は抵抗メモリセルである、請求項3に記載のメモリ構成。
- メモリアレイであって、
第1の複数の導体(BL)と、
第2の複数の導体(WL)と、
複数のメモリ構成(60)とを含み、各々は、第1の複数の導体のうちの導体(BL)と第2の複数の導体のうちの導体(WL)とを接続し、各々のメモリ構成(60)は、
第2の複数の導体のうちの導体(WL)に接続された抵抗メモリセル(130)と、
抵抗メモリセル(130)および第1の複数の導体のうちの導体(BL)に接続され、かつ、抵抗メモリセル(130)から第1の複数の導体のうちの導体(BL)へ順方向に配向された第1のダイオード(134)と、
第1のダイオード(134)と並行に、抵抗メモリセル(130)および第1の複数の導体のうちの導体(BL)に接続され、かつ、抵抗メモリセル(130)から第1の複数の導体のうちの導体(BL)へ逆方向に配向された第2のダイオード(132)とを含む、メモリアレイ。 - 第1および第2のダイオード(134、132)は異なる閾値電圧を有する、請求項7に記載のメモリ構成。
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Application Number | Priority Date | Filing Date | Title |
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US10/990,706 US7035141B1 (en) | 2004-11-17 | 2004-11-17 | Diode array architecture for addressing nanoscale resistive memory arrays |
PCT/US2005/041173 WO2006055482A1 (en) | 2004-11-17 | 2005-11-10 | Diode array architecture for addressing nanoscale resistive memory arrays |
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JP2008521253A true JP2008521253A (ja) | 2008-06-19 |
JP4547008B2 JP4547008B2 (ja) | 2010-09-22 |
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JP2007543155A Expired - Fee Related JP4547008B2 (ja) | 2004-11-17 | 2005-11-10 | ナノスケール抵抗メモリアレイを扱うためのダイオードアレイアーキテクチャ |
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US (1) | US7035141B1 (ja) |
JP (1) | JP4547008B2 (ja) |
KR (1) | KR20070084213A (ja) |
CN (1) | CN101057330B (ja) |
DE (1) | DE112005002818B4 (ja) |
GB (1) | GB2434694B (ja) |
TW (1) | TWI402840B (ja) |
WO (1) | WO2006055482A1 (ja) |
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TW200632907A (en) | 2006-09-16 |
DE112005002818B4 (de) | 2012-07-19 |
CN101057330B (zh) | 2010-10-27 |
DE112005002818T5 (de) | 2007-09-13 |
GB0708857D0 (en) | 2007-06-13 |
GB2434694A (en) | 2007-08-01 |
JP4547008B2 (ja) | 2010-09-22 |
CN101057330A (zh) | 2007-10-17 |
US7035141B1 (en) | 2006-04-25 |
US20060104111A1 (en) | 2006-05-18 |
KR20070084213A (ko) | 2007-08-24 |
TWI402840B (zh) | 2013-07-21 |
WO2006055482A1 (en) | 2006-05-26 |
GB2434694B (en) | 2010-03-31 |
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