KR20020007341A - 개선된 접점을 갖는 전기적으로 프로그램가능한 메모리 소자 - Google Patents
개선된 접점을 갖는 전기적으로 프로그램가능한 메모리 소자 Download PDFInfo
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- KR20020007341A KR20020007341A KR1020017012157A KR20017012157A KR20020007341A KR 20020007341 A KR20020007341 A KR 20020007341A KR 1020017012157 A KR1020017012157 A KR 1020017012157A KR 20017012157 A KR20017012157 A KR 20017012157A KR 20020007341 A KR20020007341 A KR 20020007341A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B99/00—Subject matter not provided for in other groups of this subclass
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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
-
- 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
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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
- G11C11/5678—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 amorphous/crystalline phase transition storage elements
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- H—ELECTRICITY
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- H10B—ELECTRONIC MEMORY DEVICES
- H10B63/00—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices
- 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
- H10B63/82—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 the switching components having a common active material layer
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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 having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/011—Manufacture or treatment of multistable switching devices
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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 having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/011—Manufacture or treatment of multistable switching devices
- H10N70/061—Shaping switching materials
- H10N70/063—Shaping switching materials by etching of pre-deposited switching material layers, e.g. lithography
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- H—ELECTRICITY
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- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- 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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- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/821—Device geometry
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- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- 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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- H10N70/00—Solid-state devices having no potential barriers, and specially adapted for rectifying, amplifying, oscillating or switching
- H10N70/801—Constructional details of multistable switching devices
- H10N70/841—Electrodes
- H10N70/8413—Electrodes adapted for resistive heating
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- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N70/00—Solid-state devices having no potential barriers, 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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- 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
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Semiconductor Memories (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Abstract
Description
셀 영역 | 마스킹 단계 | |
DRAM | 8F2 | 6-9 |
SRAM4T6T | 40F280F2 | 50 |
플래시 | 8F2 | 5 |
강자성체 | 8F2 | 3 |
본 발명 | 6F2 | 2-4 |
Claims (43)
- 전기적으로 프로그램 가능한 단일 셀 메모리 소자에 있어서,일정한 체적의 상전이 메모리 재료와;상기 메모리 재료에 전기 신호를 인가하기 위한 제1 및 제2 접점을 포함하며,상기 제1 접점은 도전성 측벽 스페이서를 구비하는 것을 특징으로 하는 메모리 소자.
- 제1항에 있어서, 상기 도전성 측벽 스페이서는 메모리 재료에 인접한 것을 특징으로 하는 메모리 소자.
- 제1항에 있어서, 상기 도전성 측벽 스페이서는 메모리 재료에 인접한 에지를 갖는 것을 특징으로 하는 메모리 소자.
- 제1항에 있어서, 상기 도전성 측벽 스페이서의 상부는 메모리 재료에 인접한 것을 특징으로 하는 메모리 소자.
- 제4항에 있어서, 상기 메모리 재료는 도전성 측벽 스페이서 상부에 형성된 거의 수평하게 배치된 메모리층인 것을 특징으로 하는 메모리 소자.
- 제1항에 있어서, 상기 도전성 측벽 스페이서는 측벽 표면에 형성된 것을 특징으로 하는 메모리 소자.
- 제6항에 있어서, 상기 측벽 표면은 트랜치 측벽 표면, 비아 측벽 표면, 그리고 필러 측벽 표면으로 구성된 그룹으로부터 선택된 것을 특징으로 하는 메모리 소자.
- 제6항에 있어서, 상기 도전성 측벽 스페이서는 적어도 하나의 접점층을 측벽 표면상에 증착시키고 적어도 하나의 접점층을 에칭하는 것에 의하여 형성된 것을 특징으로 하는 메모리 소자.
- 제8항에 있어서, 상기 적어도 하나의 접점층은 제1 접점층과 제2 접점층이며, 상기 제1 접점층은 측벽 표면 상에 배치되며, 상기 제2 큰택층은 제1 접점층 상에 배치되는 것을 특징으로 하는 메모리 소자.
- 제8항에 있어서, 상기 증착은 정합적 증착(conformal deposition)인 것을 특징으로 하는 메모리 소자.
- 제8항에 있어서, 상기 에칭은 이방성 에칭인 것을 특징으로 하는 메모리 소자.
- 제8항에 있어서, 상기 제1 접점층의 저항은 제2 접점층의 저항보다 작은 것을 특징으로 하는 메모리 소자.
- 제1항에 있어서, 상기 도전성 측벽 스페이서는 제1 측벽층과, 상기 제1 측벽층 상에 형성된 제2 측벽층을 포함하는 것을 특징으로 하는 메모리 소자.
- 제13항에 있어서, 상기 제1 측벽층의 저항은 제2 측벽층의 저항보다 작은 것을 특징으로 하는 메모리 소자.
- 제13항에 있어서, 상기 제1 측벽층은 메모리 재료에 인접한 것을 특징으로 하는 메모리 소자.
- 제15항에 있어서, 상기 제2 측벽층은 메모리 재료로부터 떨어진 것을 특징으로 하는 메모리 소자.
- 제4항에 있어서, 상기 제2 측벽층의 상부는 메모리 재료에 인접한 것을 특징으로 하는 메모리 소자.
- 제11항에 있어서, 상기 제1 측벽층의 상부는 메모리 재료로부터 떨어진 것을 특징으로 하는 메모리 소자.
- 제1항에 있어서, 상기 도전성 측벽 스페이서는 메모리 재료에 인접한 협소한 폭 부분을 갖는 것을 특징으로 하는 메모리 소자.
- 제1항에 있어서, 상기 일정한 체적의 메모리 재료는 적어도 하나의 칼코겐(chalcogen)을 포함하는 것을 특징으로 하는 메모리 소자.
- 제20항에 있어서, 상기 적어도 하나의 칼코겐은 Te 및 Se로 구성된 그룹으로부터 선택된 것을 특징으로 하는 메모리 소자.
- 제20항에 있어서, 상기 메모리 재료는 Ge, Sb, Bi, Pb, Sn, As, S, Si, P, O, 그리고 그 혼합물 또는 합금으로 구성된 그룹으로부터 선택된 적어도 하나의 요소를 포함하는 것을 특징으로 하는 메모리 소자.
- 제20항에 있어서, 상기 메모리 재료는 적어도 하나의 전이 금속 원소를 포함하는 것을 특징으로 하는 메모리 소자.
- 전기적으로 구동되는 메모리 소자에 있어서,일정한 체적의 상전이 메모리 재료와;상기 메모리 재료에 전기 신호를 인가하기 위한 제1 및 제2 접점을 포함하며,상기 제1 접점은 일정한 체적의 메모리 재료에 인접한 에지를 갖는 접점층을 구비하는 것을 특징으로 하는 메모리 소자.
- 제1항에 있어서, 상기 도전성 측벽 스페이서는 메모리 재료에 인접한 것을 특징으로 하는 메모리 소자.
- 제24항에 있어서, 상기 접점층은 거의 수직으로 배치된 것을 특징으로 하는 메모리 소자.
- 제24항에 있어서, 상기 접점층은 평탄한 것을 특징으로 하는 메모리 소자.
- 제27항에 있어서, 상기 접점층은 거의 수평하게 배치된 것을 특징으로 하는 메모리 소자.
- 제24항에 있어서, 상기 접점층은 측벽 표면에 형성된 것을 특징으로 하는 메모리 소자.
- 제29항에 있어서, 상기 측벽 표면은 트랜치 측벽 표면, 비아 측벽 표면, 그리고 필러 측벽 표면으로 구성된 그룹으로부터 선택된 것을 특징으로 하는 메모리 소자.
- 제24항에 있어서, 상기 제1 접점층은 도전성 측벽 스페이서인 것을 특징으로 하는 메모리 소자.
- 제24항에 있어서, 상기 접점층은 메모리 재료에 인접하여 개방된 단부를 갖는 컵형 표면인 것을 특징으로 하는 메모리 소자.
- 제24항에 있어서, 상기 접점층과 메모리 재료 사이의 접촉 영역은 환형을 이루는 것을 특징으로 하는 메모리 소자.
- 제24항에 있어서, 상기 에지는 메모리 재료의 단면적인 조각을 에워싸는 것을 특징으로 하는 메모리 소자.
- 제24항에 있어서, 상기 일정한 체적의 메모리 재료는 적어도 하나의 칼코겐을 포함하는 것을 특징으로 하는 메모리 소자.
- 제35항에 있어서, 상기 적어도 하나의 칼코겐은 Te 및 Se로 구성된 그룹으로부터 선택된 것을 특징으로 하는 메모리 소자.
- 제35항에 있어서, 상기 메모리 재료는 Ge, Sb, Bi, Pb, Sn, As, S, Si, P, O, 그리고 그 혼합물 또는 합금으로 구성된 그룹으로부터 선택된 적어도 하나의 요소를 포함하는 것을 특징으로 하는 메모리 소자.
- 제35항에 있어서, 상기 메모리 재료는 적어도 하나의 전이 금속 원소를 포함하는 것을 특징으로 하는 메모리 소자.
- 전기적으로 프로그램 가능한 단일 셀 메모리 소자에 있어서,일정한 체적의 상전이 메모리 재료와;상기 메모리 재료에 전기 신호를 인가하기 위한 제1 및 제2 접점을 포함하며,상기 제1 및 제2 접점중 적어도 하나는 메모리 재료에 인접한 전류 밀도를 최대화하기 위하여 그리고 메모리 재료로부터 적어도 하나의 접점까지 흐르는 열에너지를 최소화하기 위하여 채택되는 것을 특징으로 하는 메모리 소자.
- 8F2미만의 셀 영역을 갖는 전기적으로 구동되는 메모리 어레이를 제조하기 위한 방법에 있어서, CMOS 제조 공정에 사용되는 마스킹 단계의 횟수 이외에 3 또는 그 이하의 마스킹 단계를 포함하는 것을 특징으로 하는 메모리 어레이 제조 방법.
- 6F2미만의 셀 영역을 갖는 전기적으로 구동되는 메모리 어레이를 제조하기 위한 방법에 있어서, CMOS 제조 공정에 사용되는 마스킹 단계의 횟수 이외에 3 또는 그 이하의 마스킹 단계를 포함하는 것을 특징으로 하는 메모리 어레이 제조 방법.
- 무전하 측정(non-charge-measurement)의, 전기적으로 구동되는 메모리 어레이를 제조하기 위한 방법에 있어서, CMOS 제조 공정에 사용되는 마스킹 단계의 횟수 이외에 3 또는 그 이하의 마스킹 단계를 포함하는 것을 특징으로 하는 메모리 어레이 제조 방법.
- 무전하 저장(non-charge-storage)의, 전기적으로 구동되는 메모리 어레이를 제조하기 위한 방법에 있어서, CMOS 제조 공정에 사용되는 마스킹 단계의 횟수 이외에 3 또는 그 이하의 마스킹 단계를 포함하는 것을 특징으로 하는 메모리 어레이 제조 방법.
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US09/276,273 US6969866B1 (en) | 1997-10-01 | 1999-03-25 | Electrically programmable memory element with improved contacts |
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PCT/US2000/007666 WO2000057498A1 (en) | 1999-03-25 | 2000-03-22 | Electrically programmable memory element with improved contacts |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100437457B1 (ko) * | 2002-04-11 | 2004-06-23 | 삼성전자주식회사 | 보이드를 갖는 상변환 기억 셀들 및 그 제조방법들 |
KR101054100B1 (ko) * | 2003-05-22 | 2011-08-03 | 가부시키가이샤 히타치초엘에스아이시스템즈 | 반도체 기억 장치 |
KR100777536B1 (ko) * | 2003-10-22 | 2007-11-19 | 스카이워크스 솔루션즈, 인코포레이티드 | 증가된 선형성과 생산성을 갖는 FET를 포함하는BiFET |
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EP1760797A1 (en) | 2007-03-07 |
JP2002540605A (ja) | 2002-11-26 |
AU3769900A (en) | 2000-10-09 |
JP4558950B2 (ja) | 2010-10-06 |
EP1171920B1 (en) | 2006-11-29 |
US20020017701A1 (en) | 2002-02-14 |
DE60032129D1 (de) | 2007-01-11 |
CN1210819C (zh) | 2005-07-13 |
MXPA01009609A (es) | 2002-07-02 |
EP1171920A1 (en) | 2002-01-16 |
BR0009308A (pt) | 2001-12-18 |
EP1171920A4 (en) | 2005-10-19 |
US6815705B2 (en) | 2004-11-09 |
DE60032129T2 (de) | 2007-09-27 |
WO2000057498A1 (en) | 2000-09-28 |
NO20014633D0 (no) | 2001-09-24 |
US7253429B2 (en) | 2007-08-07 |
TW475262B (en) | 2002-02-01 |
KR100441692B1 (ko) | 2004-07-27 |
CA2367365A1 (en) | 2000-09-28 |
CN1352808A (zh) | 2002-06-05 |
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