JP5420567B2 - 複数セル基板を有するnandフラッシュメモリ - Google Patents
複数セル基板を有するnandフラッシュメモリ Download PDFInfo
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- JP5420567B2 JP5420567B2 JP2010540995A JP2010540995A JP5420567B2 JP 5420567 B2 JP5420567 B2 JP 5420567B2 JP 2010540995 A JP2010540995 A JP 2010540995A JP 2010540995 A JP2010540995 A JP 2010540995A JP 5420567 B2 JP5420567 B2 JP 5420567B2
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- JP
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- Prior art keywords
- well
- memory
- block
- bit line
- erase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- 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
-
- 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
-
- 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
- G11C16/14—Circuits for erasing electrically, e.g. erase voltage switching circuits
- G11C16/16—Circuits for erasing electrically, e.g. erase voltage switching circuits for erasing blocks, e.g. arrays, words, groups
-
- 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
- G11C16/26—Sensing or reading circuits; Data output circuits
-
- 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
- H10B41/30—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by the memory core region
-
- 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
- H10B41/30—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by the memory core region
- H10B41/35—Electrically erasable-and-programmable ROM [EEPROM] devices comprising floating gates characterised by the memory core region with a cell select transistor, e.g. NAND
Description
本発明は、その内容が参照により全体が本明細書中に組み込まれている、2008年1月7日に出願した米国特許仮出願番号第61/019,415号、及び2008年6月20日に出願した米国特許出願番号第12/143415号の優先権を主張するものである。
るが、概説された図1Bのブロックのそれぞれがフラッシュメモリチップ10の適正な動作を実現するために必要な全ての回路を含むであろうことを、当業者は理解するであろう。
16 行デコーダ
18、20、106、206、306 ページバッファ
24、108、208、308 チャージポンプ
30、232、338 NANDセルストリング
32 ストリング選択デバイス
34 フラッシュメモリセル
36 選択デバイス
38、40、56、58、60、62、234、236、238、330、332、334、336 メモリブロック
50、230、328 基板
52、228、326 n-型ウェル
54、226、324 p-型ウェル
104、204、304 行デコーダ/ドライバ
110、210、310 セレクタ
220、222、224、320、322、508、510、512、514 ウェルセクタ
402、516 分離デバイス
Claims (4)
- 消去動作中に消去電圧を選択的に受け取る、第1NANDセルストリングを有する第1ウェルセクタと、
消去動作中に消去電圧を選択的に受け取る、第2NANDセルストリングを有する第2ウェルセクタと、
ページバッファと、
分離デバイスを介して前記第1および第2NANDセルストリングにそれぞれ電気的に接続された第1および第2ビット線セグメントを含み、前記ページバッファに電気的に接続されたビット線と、
分離デバイスドライバと、を備え、
前記分離デバイスドライバは、
消去制御信号およびウェルセクタ選択信号に応答し、
前記ウェルセクタ選択信号がアクティブ論理レベルにあるとき、前記分離デバイスを制御するための分離駆動信号を提供するよう構成されており、
前記分離デバイスドライバは、別のウェルセクタ選択信号がアクティブ論理レベルになることに応じて、当該ウェルセクタ選択信号をアクティブ論理レベルに駆動するオーバーライド回路を提供する、NANDフラッシュメモリ。 - 前記第1ウェルセクタが半導体基板とは反対の導電型の分離層によって分離されており、
前記第2ウェルセクタが半導体基板とは反対の導電型の分離層によって分離されている、
請求項1に記載のNANDフラッシュメモリ。 - 前記消去電圧が前記第1および第2ウェルセクタのうち選択されたものに提供される、請求項2に記載のNANDフラッシュメモリ。
- 前記第1ウェルセクタが第2のビット線に電気的に接続された第3NANDセルストリングを含み、
前記第2ウェルセクタが前記第2のビット線に電気的に接続された第4NANDセルストリングを含み、
前記第2のビット線は、前記ページバッファに電気的に接続されている、
請求項3に記載のNANDフラッシュメモリ。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US1941508P | 2008-01-07 | 2008-01-07 | |
US61/019,415 | 2008-01-07 | ||
US12/143,285 US7940572B2 (en) | 2008-01-07 | 2008-06-20 | NAND flash memory having multiple cell substrates |
US12/143,285 | 2008-06-20 | ||
PCT/CA2008/002287 WO2009086618A1 (en) | 2008-01-07 | 2008-12-23 | Nand flash memory having multiple cell substrates |
Related Child Applications (1)
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JP2013238531A Division JP2014032738A (ja) | 2008-01-07 | 2013-11-19 | 複数セル基板を有するnandフラッシュメモリ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011508937A JP2011508937A (ja) | 2011-03-17 |
JP5420567B2 true JP5420567B2 (ja) | 2014-02-19 |
Family
ID=40844422
Family Applications (2)
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JP2010540995A Expired - Fee Related JP5420567B2 (ja) | 2008-01-07 | 2008-12-23 | 複数セル基板を有するnandフラッシュメモリ |
JP2013238531A Pending JP2014032738A (ja) | 2008-01-07 | 2013-11-19 | 複数セル基板を有するnandフラッシュメモリ |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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JP2013238531A Pending JP2014032738A (ja) | 2008-01-07 | 2013-11-19 | 複数セル基板を有するnandフラッシュメモリ |
Country Status (8)
Country | Link |
---|---|
US (5) | US7940572B2 (ja) |
EP (1) | EP2238597A4 (ja) |
JP (2) | JP5420567B2 (ja) |
KR (2) | KR20100110766A (ja) |
CN (1) | CN101842849A (ja) |
CA (1) | CA2701625A1 (ja) |
TW (2) | TWI446524B (ja) |
WO (1) | WO2009086618A1 (ja) |
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EP2238597A1 (en) | 2010-10-13 |
US20140022846A1 (en) | 2014-01-23 |
JP2011508937A (ja) | 2011-03-17 |
TW200945563A (en) | 2009-11-01 |
CN101842849A (zh) | 2010-09-22 |
US20150364207A1 (en) | 2015-12-17 |
US9070461B2 (en) | 2015-06-30 |
US8582372B2 (en) | 2013-11-12 |
WO2009086618A8 (en) | 2010-01-21 |
US9583204B2 (en) | 2017-02-28 |
KR20130133088A (ko) | 2013-12-05 |
US9899096B2 (en) | 2018-02-20 |
JP2014032738A (ja) | 2014-02-20 |
CA2701625A1 (en) | 2009-07-16 |
US7940572B2 (en) | 2011-05-10 |
EP2238597A4 (en) | 2011-05-11 |
US20110170352A1 (en) | 2011-07-14 |
TWI446524B (zh) | 2014-07-21 |
KR20100110766A (ko) | 2010-10-13 |
US20090175081A1 (en) | 2009-07-09 |
US20170229188A1 (en) | 2017-08-10 |
TW201432887A (zh) | 2014-08-16 |
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