JP2013528935A - 縦型トランジスタ相変化メモリ - Google Patents
縦型トランジスタ相変化メモリ Download PDFInfo
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- JP2013528935A JP2013528935A JP2013506133A JP2013506133A JP2013528935A JP 2013528935 A JP2013528935 A JP 2013528935A JP 2013506133 A JP2013506133 A JP 2013506133A JP 2013506133 A JP2013506133 A JP 2013506133A JP 2013528935 A JP2013528935 A JP 2013528935A
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- H10N70/20—Multistable switching devices, e.g. memristors
- H10N70/231—Multistable switching devices, e.g. memristors based on solid-state phase change, e.g. between amorphous and crystalline phases, Ovshinsky effect
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- 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
- H10B63/845—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 the switching components being connected to a common vertical conductor
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- 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
- H10B63/34—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices comprising selection components having three or more electrodes, e.g. transistors of the vertical channel field-effect transistor type
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- 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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- H10N70/011—Manufacture or treatment of multistable switching devices
- H10N70/061—Patterning of the switching material
- H10N70/068—Patterning of the switching material by processes specially adapted for achieving sub-lithographic dimensions, e.g. using spacers
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- 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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- 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
- H10N70/8265—Device geometry adapted for essentially vertical current flow, e.g. sandwich or pillar type devices on sidewalls of dielectric structures, e.g. mesa or cup type devices
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- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
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- H10N70/841—Electrodes
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- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/881—Switching materials
- H10N70/882—Compounds of sulfur, selenium or tellurium, e.g. chalcogenides
- H10N70/8825—Selenides, e.g. GeSe
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- H—ELECTRICITY
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- H10N70/00—Solid-state devices without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/881—Switching materials
- H10N70/882—Compounds of sulfur, selenium or tellurium, e.g. chalcogenides
- H10N70/8828—Tellurides, e.g. GeSbTe
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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 without a potential-jump barrier or surface barrier, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/881—Switching materials
- H10N70/884—Other compounds of groups 13-15, e.g. elemental or compound semiconductors
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- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/0002—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using resistive RAM [RRAM] elements
- G11C13/0004—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using resistive RAM [RRAM] elements comprising amorphous/crystalline phase transition cells
Abstract
【選択図】図4
Description
縦型トランジスタ相変化メモリおよび相変化メモリを加工する方法を本明細書に説明する。1つ以上の方法の実施形態は、縦型トランジスタの少なくとも一部上に誘電体を形成することと、誘電体上に電極を形成することと、電極の片側の一部上および誘電体の片側の一部上に、電極および誘電体に沿って延在し、縦型トランジスタに接触する、相変化材料の垂直ストリップを形成することとを含む。
Claims (18)
- ピラー上に下部電極を含む縦型トランジスタと、
前記下部電極の一部の上面上に誘電体と、
前記誘電体上に上部電極と、
前記上部電極の側面上、前記誘電体の側面上、および前記下部電極の上面上に相変化材料と、を備える、相変化メモリセル。 - 前記相変化材料の幅は、前記下部電極の前記上面の幅よりも小さい、請求項1に記載の相変化メモリセル。
- 前記相変化材料の幅は、前記上部電極の前記側面の幅よりも小さい、請求項1に記載の相変化メモリセル。
- 前記相変化メモリセルは、前記上部電極の反対側面上、および前記誘電体の反対側面上に追加の相変化材料を含む、請求項1に記載の相変化メモリセル。
- 前記相変化メモリセルは、前記上部電極の前記側面の反対側かつ前記誘電体の前記側面の反対側の前記相変化材料の側面上に、追加の誘電体を含む、請求項1に記載の相変化メモリセル。
- 前記相変化材料は、前記上部電極と前記下部電極との間の前記誘電体上に活性領域を含む、請求項1に記載の相変化メモリセル。
- 前記相変化材料は、前記上部電極の上面から、前記下部電極の上面まで延在する、請求項1に記載の相変化メモリセル。
- 垂直ライン電極を含む縦型トランジスタと、
前記垂直ライン電極の一部の上面上に誘電体と、
前記誘電体の上面上に上部電極と、
前記上部電極の側面上、前記誘電体の側面上、および前記垂直ライン電極の上面上に相変化材料と、を備える、相変化メモリセル。 - 前記相変化材料は、前記垂直ライン電極と点接触している、請求項8に記載の相変化メモリセル。
- 前記相変化材料は、前記誘電体上および前記点接触上に活性領域を含む、請求項9に記載の相変化メモリセル。
- 前記相変化メモリセルは、前記垂直ライン電極の側面を包囲するスペーサを含む、請求項8に記載の相変化メモリセル。
- 前記上部電極は、データ線を備える、請求項8に記載の相変化メモリセル。
- 前記縦型トランジスタは、金属酸化膜半導体型電界効果トランジスタ(MOSFET)である、請求項8に記載の相変化メモリセル。
- 縦型トランジスタアレイ上に誘電体と、
前記誘電体上に電極と、
前記誘電体および前記電極上に、かつこれらと共通平面によって接触する、相変化材料と、を備え、前記相変化材料は、前記縦型トランジスタアレイのいくつかの縦型トランジスタ上にあり、かつこれらと接触する、相変化メモリセルアレイ。 - 前記誘電体および前記電極の除去部分を含み、前記除去部分は、残りの誘電体および電極の1特徴幅の範囲によって分離され、前記残りの誘電体および電極は、第1の方向に、特定の縦型トランジスタ上の位置から、前記特定の縦型トランジスタと、隣接した縦型トランジスタとの間の位置まで及ぶ、請求項14に記載の相変化メモリセルアレイ。
- 前記相変化材料は、少なくとも、前記電極の上部上、前記電極の前記側部、前記誘電体の前記側部、および前記縦型トランジスタアレイの上部上にある、請求項15に記載の相変化メモリセルアレイ。
- 前記アレイは、前記相変化材料上に追加の誘電体を含み、
前記追加の誘電体および前記相変化材料の削除部分は、前記形成された追加の誘電体および前記相変化材料の厚さに等しい深さまで延在する、請求項16に記載の相変化メモリセルアレイ。 - 前記追加の誘電体および相変化材料の除去部分は、第2の方向に、第1の縦型トランジスタの遠位端上から、前記第1の縦型トランジスタに隣接した第2の縦型トランジスタの近位端上まで延在する、請求項17に記載の相変化メモリセルアレイ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/762,587 US8198160B2 (en) | 2010-04-19 | 2010-04-19 | Vertical transistor phase change memory |
US12/762,587 | 2010-04-19 | ||
PCT/US2011/000650 WO2011133205A2 (en) | 2010-04-19 | 2011-04-11 | Vertical transistor phase change memory |
Publications (2)
Publication Number | Publication Date |
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JP2013528935A true JP2013528935A (ja) | 2013-07-11 |
JP5626668B2 JP5626668B2 (ja) | 2014-11-19 |
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JP2013506133A Active JP5626668B2 (ja) | 2010-04-19 | 2011-04-11 | 縦型トランジスタ相変化メモリ |
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US (3) | US8198160B2 (ja) |
EP (2) | EP2561546B1 (ja) |
JP (1) | JP5626668B2 (ja) |
KR (1) | KR101384061B1 (ja) |
CN (1) | CN102870215B (ja) |
SG (1) | SG184932A1 (ja) |
TW (1) | TWI485813B (ja) |
WO (1) | WO2011133205A2 (ja) |
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2010
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- 2011-04-11 CN CN201180019878.4A patent/CN102870215B/zh not_active Expired - Fee Related
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- 2011-04-11 WO PCT/US2011/000650 patent/WO2011133205A2/en active Application Filing
- 2011-04-11 SG SG2012077525A patent/SG184932A1/en unknown
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US9252190B2 (en) | 2013-11-13 | 2016-02-02 | Unisantis Electronics Singapore Pte. Ltd. | Semiconductor device and method for producing semiconductor device |
US9397142B2 (en) | 2013-11-13 | 2016-07-19 | Unisantis Electronics Singapore Pte. Ltd. | Semiconductor device and method for producing semiconductor device |
US9536927B2 (en) | 2013-11-13 | 2017-01-03 | Unisantis Electronics Singapore Pte. Ltd | Method for producing semiconductor device |
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Also Published As
Publication number | Publication date |
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TWI485813B (zh) | 2015-05-21 |
EP2561546A2 (en) | 2013-02-27 |
CN102870215A (zh) | 2013-01-09 |
KR101384061B1 (ko) | 2014-04-09 |
US9024290B2 (en) | 2015-05-05 |
US20140353571A1 (en) | 2014-12-04 |
US8198160B2 (en) | 2012-06-12 |
EP3309838A1 (en) | 2018-04-18 |
EP3309838B1 (en) | 2020-06-03 |
EP2561546B1 (en) | 2017-12-13 |
SG184932A1 (en) | 2012-11-29 |
WO2011133205A2 (en) | 2011-10-27 |
JP5626668B2 (ja) | 2014-11-19 |
EP2561546A4 (en) | 2014-08-06 |
US20110253965A1 (en) | 2011-10-20 |
KR20130006695A (ko) | 2013-01-17 |
US8816316B2 (en) | 2014-08-26 |
WO2011133205A3 (en) | 2012-02-02 |
TW201203469A (en) | 2012-01-16 |
CN102870215B (zh) | 2016-08-03 |
US20120248398A1 (en) | 2012-10-04 |
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