JP2011003264A - 3次元垂直チャンネル構造を有する不揮発性メモリ装置のプログラム方法 - Google Patents
3次元垂直チャンネル構造を有する不揮発性メモリ装置のプログラム方法 Download PDFInfo
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/56—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency
- G11C11/5621—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using storage elements with more than two stable states represented by steps, e.g. of voltage, current, phase, frequency using charge storage in a floating gate
- G11C11/5628—Programming or writing circuits; Data input circuits
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/06—Auxiliary circuits, e.g. for writing into memory
- G11C16/10—Programming or data input circuits
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- 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
- H10B63/30—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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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D88/00—Three-dimensional [3D] integrated devices
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/04—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS
- G11C16/0483—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells having several storage transistors connected in series
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C16/00—Erasable programmable read-only memories
- G11C16/02—Erasable programmable read-only memories electrically programmable
- G11C16/06—Auxiliary circuits, e.g. for writing into memory
- G11C16/34—Determination of programming status, e.g. threshold voltage, overprogramming or underprogramming, retention
- G11C16/3418—Disturbance prevention or evaluation; Refreshing of disturbed memory data
- G11C16/3427—Circuits or methods to prevent or reduce disturbance of the state of a memory cell when neighbouring cells are read or written
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Abstract
【解決手段】本発明のプログラム方法によると、シャドープログラム方式によってYZ平面の各層に属したメモリセルがマルチビットデータにプログラムされ、YZ平面のN番目の層(ここで、Nは1、またはそれより大きい定数)のメモリセルがプログラムされる場合、YZ平面の他層のメモリセルがプログラムされる前にN番目の層に対応するXZ平面の残りのメモリセルがプログラムされる。
【選択図】図1
Description
200 行デコーダ回路
300 列デコーダ回路
400 読み出し及び書き込みブロック
500 制御ロジック
600 電圧発生回路
Claims (12)
- ビットラインとストリング選択ラインとの交差領域に各々形成され、各々が基板上に垂直に多層構造で形成されたメモリセルを有するストリングを含む不揮発性メモリ装置のプログラム方法において、
シャドープログラム方式によってYZ平面の各層に属したメモリセルをマルチビットデータにプログラムし、前記YZ平面のN番目の層(ここで、Nは1、またはそれより大きい定数)のメモリセルがプログラムされる場合、前記YZ平面の他層のメモリセルがプログラムされる前に前記N番目の層に対応するXZ平面の残りのメモリセルがプログラムされることを特徴とするプログラム方法。 - 前記ビットラインは、前記YZ平面に垂直に配列され、
前記YZ平面のN番目の層(ここで、Nは1、またはそれより大きい定数)のメモリセルがプログラムされる時、前記ビットラインは、同時に活性化されることを特徴とする請求項1に記載のプログラム方法。 - 前記ビットラインは、前記YZ平面に垂直に配列され、第1グループと第2グループに分けられ、
前記YZ平面のN番目の層のメモリセルがプログラムされる時、前記ビットラインは、グループ単位で活性化されることを特徴とする請求項1に記載のプログラム方法。 - 前記YZ平面のN番目の層のメモリセルがプログラムされる場合、前記N番目の層に対応するXZ平面の残りのメモリセルは、ストリング選択ライン単位でプログラムされることを特徴とする請求項1に記載のプログラム方法。
- 前記ストリング選択ラインは、各々が2、またはそれより多いストリング選択ラインで構成された複数のグループに分けられ、
前記YZ平面のN番目の層(ここで、Nは1、またはそれより大きい定数)のメモリセルがプログラムされる場合、前記N番目の層に対応するXZ平面の残りのメモリセルは、前記各グループのストリング選択ラインが同一手順に交互に選択された状態でプログラムされることを特徴とする請求項1に記載のプログラム方法。 - 前記YZ平面の層は、第1及び第2グループに分けられ、
前記第1グループに属したメモリセルがプログラムされ、次に、前記第2グループに属したメモリセルがプログラムされることを特徴とする請求項1に記載のプログラム方法。 - 前記ストリングは、ストリング選択ラインとYZ平面の層とを基準として4つのグループに分けられ、前記グループは互いに独立的にプログラムされることを特徴とする請求項1に記載のプログラム方法。
- 前記ストリングは、ストリング選択ラインを基準として2つのグループに分けられ、前記グループは互いに独立的にプログラムされることを特徴とする請求項1に記載のプログラム方法。
- 前記シャドープログラム方式の場合、前記YZ平面のN番目の層のメモリセルに上位ビットデータがプログラムされる前に前記YZ平面の(N−1)番目の層のメモリセルが下位及び上位ビットデータに、そして前記YZ平面の(N+1)番目の層のメモリセルが下位ビットデータにプログラムされることを特徴とする請求項1に記載のプログラム方法。
- ビットラインとストリング選択ラインとの交差領域に各々形成され、各々が基板上に垂直に多層構造で形成されたメモリセルを有するストリングを含む3次元垂直チャンネルアレイと、
前記3次元垂直チャンネルアレイに対するプログラム動作を制御するように構成された手段を含み、
前記3次元垂直チャンネルアレイは、前記手段の第御下にシャドープログラム方式によってYZ平面の各層に属したメモリセルをマルチビットデータにプログラムし、
前記YZ平面のN番目の層(ここで、Nは1、またはそれより大きい定数)のメモリセルがプログラムされる場合、前記YZ平面の他の層のメモリセルがプログラムされる前に前記N番目の層に対応するXZ平面の残りのメモリセルがプログラムされることを特徴とする不揮発性メモリ装置。 - 前記YZ平面のN番目の層のメモリセルがプログラムされる場合、前記N番目の層に対応するXZ平面の残りのメモリセルは、ストリング選択ライン単位でプログラムされることを特徴とする請求項10に記載の不揮発性メモリ装置。
- 前記ストリング選択ラインは各々が2、またはそれより多いストリング選択ラインで構成された複数のグループに分けられ、
前記YZ平面のN番目の層(ここで、Nは1、またはそれより大きい定数)のメモリセルがプログラムされる場合、前記N番目の層に対応するXZ平面の残りのメモリセルは、前記各グループのストリング選択ラインが同一手順に交互に選択された状態でプログラムされることを特徴とする請求項10に記載の不揮発性メモリ装置。
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| JP2020030881A (ja) * | 2019-11-28 | 2020-02-27 | キオクシア株式会社 | メモリシステム |
| JP2020047323A (ja) * | 2018-09-14 | 2020-03-26 | キオクシア株式会社 | メモリシステム |
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Also Published As
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| KR101635504B1 (ko) | 2016-07-04 |
| KR20100136785A (ko) | 2010-12-29 |
| USRE46623E1 (en) | 2017-12-05 |
| JP5497550B2 (ja) | 2014-05-21 |
| US8514625B2 (en) | 2013-08-20 |
| US20130322172A1 (en) | 2013-12-05 |
| US20100322000A1 (en) | 2010-12-23 |
| US8767473B2 (en) | 2014-07-01 |
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