JP6285001B2 - 一つの共有されたディープドープ領域を備えたメモリアレイ - Google Patents
一つの共有されたディープドープ領域を備えたメモリアレイ Download PDFInfo
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- JP6285001B2 JP6285001B2 JP2016226404A JP2016226404A JP6285001B2 JP 6285001 B2 JP6285001 B2 JP 6285001B2 JP 2016226404 A JP2016226404 A JP 2016226404A JP 2016226404 A JP2016226404 A JP 2016226404A JP 6285001 B2 JP6285001 B2 JP 6285001B2
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- 230000015654 memory Effects 0.000 title claims description 349
- 230000015556 catabolic process Effects 0.000 claims description 4
- 230000005641 tunneling Effects 0.000 description 6
- 102100032533 ADP/ATP translocase 1 Human genes 0.000 description 2
- 101000884385 Homo sapiens Arylamine N-acetyltransferase 1 Proteins 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 101100161363 Arabidopsis thaliana AAE1 gene Proteins 0.000 description 1
- 101100161365 Arabidopsis thaliana AAE2 gene Proteins 0.000 description 1
- 101100108211 Candida albicans (strain SC5314 / ATCC MYA-2876) ADF1 gene Proteins 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- G11C5/00—Details of stores covered by group G11C11/00
- G11C5/14—Power supply arrangements, e.g. power down, chip selection or deselection, layout of wirings or power grids, or multiple supply levels
- G11C5/147—Voltage reference generators, voltage or current regulators; Internally lowered supply levels; Compensation for voltage drops
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- G—PHYSICS
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- 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
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- G—PHYSICS
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- G11C16/02—Erasable programmable read-only memories electrically programmable
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- G11C16/0466—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells with charge storage in an insulating layer, e.g. metal-nitride-oxide-silicon [MNOS], silicon-oxide-nitride-oxide-silicon [SONOS]
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- G11C16/0408—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells containing floating gate transistors
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- G11C16/0408—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells containing floating gate transistors
- G11C16/0433—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells containing floating gate transistors comprising cells containing a single floating gate transistor and one or more separate select transistors
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- G11C16/0408—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells containing floating gate transistors
- G11C16/0441—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells containing floating gate transistors comprising cells containing multiple floating gate devices, e.g. separate read-and-write FAMOS transistors with connected floating gates
- G11C16/0458—Erasable programmable read-only memories electrically programmable using variable threshold transistors, e.g. FAMOS comprising cells containing floating gate transistors comprising cells containing multiple floating gate devices, e.g. separate read-and-write FAMOS transistors with connected floating gates comprising two or more independent floating gates which store independent data
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- G11C16/14—Circuits for erasing electrically, e.g. erase voltage switching circuits
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- G—PHYSICS
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- G11C16/10—Programming or data input circuits
- G11C16/14—Circuits for erasing electrically, e.g. erase voltage switching circuits
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- G—PHYSICS
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- G—PHYSICS
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- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/12—Bit line control circuits, e.g. drivers, boosters, pull-up circuits, pull-down circuits, precharging circuits, equalising circuits, for bit lines
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C7/00—Arrangements for writing information into, or reading information out from, a digital store
- G11C7/22—Read-write [R-W] timing or clocking circuits; Read-write [R-W] control signal generators or management
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- G—PHYSICS
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- G11C—STATIC STORES
- G11C8/00—Arrangements for selecting an address in a digital store
- G11C8/10—Decoders
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- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
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- H01L27/12—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 other than a semiconductor body, e.g. an insulating body
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- H01L29/0642—Isolation within the component, i.e. internal isolation
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/08—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
- H01L29/0843—Source or drain regions of field-effect devices
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- H01L29/42324—Gate electrodes for transistors with a floating gate
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Description
Claims (14)
- 複数のメモリページを含むメモリアレイであって、
各メモリページは、複数のメモリセルを含み、
各メモリセルは、
フローティングゲートモジュールであって、フローティングゲートトランジスタを含み、ソース線、ビット線及びワード線に従って、該フローティングゲートトランジスタを制御するように構成され、該フローティングゲートトランジスタが、第一端子と、第二端子と、フローティングゲートとを有する、フローティングゲートモジュールと、
制御エレメントであって、制御線に結合されたボディ端子と、該ボディ端子に結合された第一端子と、該ボディ端子に結合された第二端子と、フローティングゲートに結合された制御端子と、を有する制御エレメントと、
消去エレメントであって、該メモリセルのプログラム動作時及びプログラム禁止動作時に第一電圧を受け、該メモリセルの消去動作時に第二電圧を受けるように構成されたボディ端子と、消去線に結合された第一端子と、該消去エレメントの第一端子に結合された、又はフローティングしている第二端子と、前記フローティングゲートに結合された制御端子と、を有する消去エレメントと、
を含み、
前記フローティングゲートモジュールは、第一ウェル内に配置され、
前記消去エレメントは、第二ウェル内に配置され、
前記制御エレメントは、第三ウェル内に配置され、
前記第一ウェル、前記第二ウェル及び前記第三ウェルはディープドープ領域内に配置され、
前記複数のメモリページの複数のメモリセルは、全て前記ディープドープ領域内に配置され、
前記制御線は、前記プログラム動作時に前記第一電圧にあり、
前記消去線は、前記消去動作時に前記第二電圧にあり、
同一のメモリページ内にある複数のメモリセルは、同一の制御線、同一の消去線及び同一のワード線に結合されており、
前記同一のメモリページ内にある複数のメモリセルは、異なるソース線及び異なるビット線に結合されている、メモリアレイ。 - 前記メモリセルのプログラム動作時、
前記制御線は、前記第一電圧にあり、
前記消去線は、第三電圧にあり、
前記ワード線は、第四電圧にあり、
前記ソース線は、第五電圧にあり、
前記ビット線は、前記第五電圧にあり、
前記第一電圧は、前記第三電圧より大きく、前記第三電圧は、前記第四電圧より大きく、前記第四電圧は、前記第五電圧より大きく、
前記第三電圧と前記第五電圧との差は、前記第一電圧と前記第五電圧との差の半分よりも大きく、
前記第四電圧と前記第五電圧との差は、前記第一電圧と前記第五電圧との差の半分よりも小さい、請求項1に記載のメモリアレイ。 - 前記メモリセルのプログラム動作時、
非選択メモリページ内の非選択メモリセルに結合された制御線は、第六電圧にあり、
前記非選択メモリセルに結合された消去線は、前記第三電圧にあり、
前記非選択メモリセルに結合されたワード線は、前記第四電圧にあり、
前記第三電圧は、前記第六電圧よりも大きく、前記第六電圧は、前記第五電圧よりも大きく、
前記第六電圧と前記第五電圧との差は、前記第一電圧と前記第五電圧との差の半分よりも小さい、請求項2に記載のメモリアレイ。 - 前記メモリセルのプログラム禁止動作時、
前記制御線は、前記第一電圧にあり、
前記消去線は、前記第三電圧にあり、
前記ワード線は、前記第四電圧にあり、
前記ソース線は、前記第四電圧又は第七電圧にあり、
前記ビット線は、前記第四電圧又は前記第七電圧にあり、
前記第一電圧は、前記第七電圧よりも大きく、前記第七電圧は前記第四電圧よりも大きい、又はこれと等しく、
前記第七電圧と前記第五電圧との差は、前記フローティングゲートトランジスタのソース/ドレイン接合ブレークダウン電圧よりも小さい、請求項2に記載のメモリアレイ。 - 前記フローティングゲートモジュールは、さらに、
前記ソース線に結合された第一端子と、前記フローティングゲートトランジスタの第一端子に結合された第二端子と、前記ワード線に結合された制御端子と、を有するソーストランジスタと、
前記フローティングゲートトランジスタの第二端子に結合された第一端子と、前記ビット線に結合された第二端子と、前記ワード線に結合された制御端子と、を有するビットトランジスタと、を含む、請求項1に記載のメモリアレイ。 - 異なるメモリページ内にある複数のメモリセルは、異なる制御線、異なるワード線及び前記消去線に結合されており、
前記メモリセルの消去動作時、
前記消去線は、前記第二電圧にあり、
前記制御線は、第五電圧にあり、
前記ソース線及び前記ビット線は、いずれも第四電圧又は前記第五電圧にあるとともに、前記ワード線は、前記第四電圧又は前記第五電圧にあり、
前記第二電圧は、前記第四電圧よりも大きく、前記第四電圧は、前記第五電圧よりも大きく、
前記第四電圧と前記第五電圧との差は、前記第二電圧と前記第五電圧との差の半分よりも小さい、請求項5に記載のメモリアレイ。 - 異なるメモリページ内にある複数のメモリセルは、異なる制御線、異なるワード線及び異なる消去線に結合されており、
前記メモリセルの消去動作時、
前記消去線は、前記第二電圧にあり、
前記制御線は、第五電圧にあり、
前記ソース線及び前記ビット線は、いずれも第四電圧又は前記第五電圧にあるとともに、前記ワード線は、前記第四電圧又は前記第五電圧にあり、
前記第二電圧は、前記第四電圧よりも大きく、前記第四電圧は、前記第五電圧よりも大きく、
前記第四電圧と前記第五電圧との差は、前記第二電圧と前記第五電圧との差の半分よりも小さい、請求項5に記載のメモリアレイ。 - 前記メモリセルの消去動作時、
非選択メモリページ内にある非選択メモリセルに結合された消去線は、第三電圧にあり、
前記非選択メモリセルに結合された制御線は、第六電圧にあり、
前記第二電圧は、前記第三電圧よりも大きく、前記第三電圧は、前記第六電圧よりも大きく、前記第六電圧は、前記第五電圧よりも大きく、
前記第三電圧と前記第五電圧との差は、前記第二電圧と前記第五電圧との差の半分よりも大きく、
前記第六電圧と前記第五電圧との差は、前記第二電圧と前記第五電圧との差の半分よりも小さい、請求項7に記載のメモリアレイ。 - 前記フローティングゲートモジュールは、さらに、
前記ソース線に結合された第一端子と、前記フローティングゲートトランジスタの第一端子に結合された第二端子と、前記ワード線に結合された制御端子と、を有するソーストランジスタを有し、
前記フローティングゲートトランジスタの第二端子は、前記ビット線に結合されている、請求項1に記載のメモリアレイ。 - 異なるメモリページ内にある複数のメモリセルは、異なる制御線、異なるワード線及び前記消去線に結合されており、
前記メモリセルの消去動作時、
前記消去線は、前記第二電圧にあり、
前記制御線は、第五電圧にあり、
前記ワード線は、第四電圧又は前記第五電圧にあり、
前記ソース線及び前記ビット線は、いずれも前記第四電圧又は前記第五電圧にあり、
前記第二電圧は、前記第四電圧よりも大きく、前記第四電圧は、前記第五電圧よりも大きく、
前記第四電圧と前記第五電圧との差は、前記第二電圧と前記第五電圧との差の半分よりも小さい、請求項9に記載のメモリアレイ。 - 異なるメモリページ内にある複数のメモリセルは、異なる制御線、異なるワード線及び異なる消去線に結合されており、
前記メモリセルの消去動作時、
前記消去線は、前記第二電圧にあり、
前記制御線は、第五電圧にあり、
前記ワード線は、第四電圧又は前記第五電圧にあり、
前記ソース線及び前記ビット線は、いずれも第四電圧又は前記第五電圧にあり、
前記第二電圧は、前記第四電圧よりも大きく、前記第四電圧は、前記第五電圧よりも大きく、
前記第四電圧と前記第五電圧との差は、前記第二電圧と前記第五電圧との差の半分よりも小さい、請求項9に記載のメモリアレイ。 - 前記メモリセルの消去動作時、
非選択メモリページ内にある非選択メモリセルに結合された消去線は、第三電圧にあり、
前記非選択メモリセルに結合された制御線は、第六電圧にあり、
前記第二電圧は、前記第三電圧よりも大きく、前記第三電圧は、前記第六電圧よりも大きく、前記第六電圧は、前記第五電圧よりも大きく、
前記第三電圧と前記第五電圧との差は、前記第一電圧と前記第五電圧との差の半分よりも大きく、
前記第六電圧と前記第五電圧との差は、前記第一電圧と前記第五電圧との差の半分よりも小さい、請求項11に記載のメモリアレイ。 - 前記ディープドープ領域は、ディープNウェル又はN型埋め込み層であり、
前記第一ウェル及び前記第三ウェルは前記ディープドープ領域内に配置されたPウェルであり、
前記第二ウェルは、前記ディープドープ領域内に配置されたNウェルである、請求項1に記載のメモリアレイ。 - 同一のメモリページ内にある複数のメモリセルの複数の制御エレメントは、同一の第三ウェル内に配置されている、請求項1に記載のメモリアレイ。
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