KR100669313B1 - 메모리 및 액세스 디바이스 - Google Patents
메모리 및 액세스 디바이스 Download PDFInfo
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- KR100669313B1 KR100669313B1 KR1020057010582A KR20057010582A KR100669313B1 KR 100669313 B1 KR100669313 B1 KR 100669313B1 KR 1020057010582 A KR1020057010582 A KR 1020057010582A KR 20057010582 A KR20057010582 A KR 20057010582A KR 100669313 B1 KR100669313 B1 KR 100669313B1
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- memory
- chalcogenide material
- access device
- electrode
- chalcogenide
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- 239000000463 material Substances 0.000 claims abstract description 90
- 150000004770 chalcogenides Chemical class 0.000 claims abstract description 33
- 238000000034 method Methods 0.000 claims description 21
- 239000012782 phase change material Substances 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 10
- 239000010409 thin film Substances 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052714 tellurium Inorganic materials 0.000 claims 3
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims 3
- 229910000927 Ge alloy Inorganic materials 0.000 claims 1
- 229910052787 antimony Inorganic materials 0.000 claims 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims 1
- 229910052785 arsenic Inorganic materials 0.000 claims 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims 1
- 229910052732 germanium Inorganic materials 0.000 claims 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims 1
- 239000004020 conductor Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000007772 electrode material Substances 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- -1 chalcogenide compound Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- H10N70/20—Multistable switching devices, e.g. memristors
-
- 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
-
- 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
- G11C13/0021—Auxiliary circuits
- G11C13/003—Cell access
-
- 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
- H10B63/20—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices comprising selection components having two electrodes, e.g. diodes
- H10B63/24—Resistance change memory devices, e.g. resistive RAM [ReRAM] devices comprising selection components having two electrodes, e.g. diodes of the Ovonic threshold switching type
-
- 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
- H10B63/80—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
-
- 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
- H10N70/20—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
-
- 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
- H10N70/801—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
-
- 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
- H10N70/801—Constructional details of multistable switching devices
- H10N70/881—Switching materials
- H10N70/882—Compounds of sulfur, selenium or tellurium, e.g. chalcogenides
-
- 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
- H10N70/801—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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/70—Resistive array aspects
- G11C2213/71—Three dimensional array
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/70—Resistive array aspects
- G11C2213/74—Array wherein each memory cell has more than one access device
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/70—Resistive array aspects
- G11C2213/76—Array using an access device for each cell which being not a transistor and not a diode
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Semiconductor Memories (AREA)
- Mram Or Spin Memory Techniques (AREA)
Abstract
Description
Claims (25)
- 메모리 소자;상기 메모리 소자에 연결되고, 제1 칼코겐화합물(chalcogenide) 재료를 포함하는 제1 액세스 디바이스; 및상기 제1 액세스 디바이스에 연결되고, 제2 칼코겐화합물 재료를 포함하는 제2 액세스 디바이스를 포함하는 장치.
- 제1항에 있어서,기판 위에 수직 구조체를 더 포함하고, 상기 수직 구조체는 서로 직렬 연결된 상기 제1 액세스 디바이스, 상기 제2 액세스 디바이스 및 상기 메모리 소자를 포함하는 장치.
- 제1항에 있어서,상기 제1 액세스 디바이스, 상기 제2 액세스 디바이스 및 상기 메모리 소자는 박막 재료를 이용하여 형성되는 장치.
- 제1항에 있어서,상기 제2 액세스 디바이스는 상기 제1 액세스 디바이스 위에 있고, 상기 제1 액세스 디바이스는 상기 메모리 소자 위에 있는 장치.
- 제1항에 있어서,제1 선택 디바이스를 더 포함하고, 상기 제1 선택 디바이스는, 비정질 상태에 있고, 전압 또는 전류의 인가에 의해 보다 고저항인 상태와 상대적으로 저저항인 상태 사이를 반복적이고 가역적으로 스위칭되도록 적응되는 스위칭 재료를 포함하는 장치.
- 제1항에 있어서,상기 메모리 소자는 상 변화(phase change) 재료를 포함하고, 상기 상 변화 재료는 상기 상 변화 재료에 전류를 인가하여 상기 상 변화 재료의 상태를 결정질 상태와 비정질 상태 사이에서 변화시킴으로써 적어도 2개의 메모리 상태들 중 어느 하나로 프로그램될 수 있으며, 상기 비정질 상태에서의 상기 상 변화 재료의 저항값이 상기 결정질 상태에서의 상기 상 변화 재료의 저항값보다 큰 장치.
- 제1항에 있어서,상기 메모리 소자는 기판 위의 메모리 재료를 포함하고, 상기 제1 칼코겐화합물 재료는 상기 메모리 재료 위에 있고, 상기 제2 칼코겐화합물 재료는 상기 제1 칼코겐화합물 재료 위에 있는 장치.
- 제7항에 있어서,상기 메모리 재료와 상기 제1 칼코겐화합물 재료 사이의 제1 전극; 및상기 제1 칼코겐화합물 재료와 상기 제2 칼코겐화합물 재료 사이의 제2 전극을 더 포함하는 장치.
- 제8항에 있어서,상기 제1 전극 및 상기 제2 전극은 탄소 박막인 장치.
- 제7항에 있어서,상기 제1 칼코겐화합물 재료, 상기 제2 칼코겐화합물 재료 및 상기 메모리 재료 각각은 텔루리움(tellurium)을 포함하는 장치.
- 제7항에 있어서,상기 제1 칼코겐화합물 재료는 실리콘, 텔루리움, 비소(arsenic), 게르마늄 및 이들의 조합들을 포함하는 그룹 중에서 선택되는 재료인 장치.
- 제7항에 있어서,상기 메모리 재료는 텔루리움, 안티몬(antimony), 게르마늄 합금인 장치.
- 제1 오보닉(ovonic) 스위치;상기 제1 오보닉 스위치에 연결되는 제2 오보닉 스위치; 및상기 제2 오보닉 스위치에 연결되는 메모리 소자를 포함하는 장치.
- 제13항에 있어서, 상기 메모리 소자, 상기 제1 오보닉 스위치 및 상기 제2 오보닉 스위치는 박막 재료들을 이용하여 형성되는 장치.
- 제13항에 있어서,기판 위에 수직 구조체를 더 포함하고, 상기 수직 구조체는 서로 직렬 연결된 상기 제1 오보닉 스위치, 상기 제2 오보닉 스위치 및 상기 메모리 소자를 포함하는 장치.
- 기판 위의 메모리 재료;상기 메모리 재료 위의 제1 전극;상기 제1 전극 위의 제1 칼코겐화합물 재료;상기 제1 칼코겐화합물 재료 위의 제2 전극; 및상기 제2 전극 위의 제2 칼코겐화합물 재료를 포함하는 장치.
- 제16항에 있어서,상기 메모리 재료, 상기 제1 전극, 상기 제1 칼코겐화합물 재료, 상기 제2 전극, 및 상기 제2 칼코겐화합물 재료가 상기 기판 위에 수직 적층체(vertical stack) 부분을 형성하는 장치.
- 제16항에 있어서,상기 메모리 재료, 상기 제1 전극, 상기 제1 칼코겐화합물 재료, 상기 제2 전극, 및 상기 제2 칼코겐화합물 재료 각각은 박막 재료들인 장치.
- 메모리 셀을 가지는 장치로서,상기 메모리 셀은,메모리 소자; 및상기 메모리 셀의 홀딩 전압을 증가시키기 위해 상기 메모리 소자에 연결되는 적어도 2개의 직렬 연결된 액세스 디바이스들을 포함하는 장치.
- 제19항에 있어서,상기 메모리 소자는 상 변화 재료를 포함하고,상기 적어도 2개의 직렬 연결된 액세스 디바이스들 중 제1 액세스 디바이스는 제1 칼코겐화합물 재료를 포함하고, 상기 적어도 2개의 직렬 연결된 액세스 디바이스들 중 제2 액세스 디바이스는 제2 칼코겐화합물 재료를 포함하는 장치.
- 제20항에 있어서,상기 제1 칼코겐화합물 재료는 상기 제2 칼코겐화합물 재료와는 다른 장치.
- 제19항에 있어서,상기 적어도 2개의 직렬 연결된 액세스 디바이스들 중 제1 액세스 디바이스, 상기 적어도 2개의 직렬 연결된 액세스 디바이스들 중 제2 액세스 디바이스, 및 상기 메모리 소자는 박막 재료들을 이용하여 형성되는 장치.
- 프로세서;상기 프로세서에 연결되는 무선 인터페이스;상기 프로세서에 연결되고, 메모리 소자를 포함하는 메모리;상기 메모리 소자에 연결되고, 제1 칼코겐화합물 재료를 포함하는 제1 액세스 디바이스; 및상기 제1 액세스 디바이스에 연결되고, 제2 칼코겐화합물 재료를 포함하는 제2 액세스 디바이스를 포함하는 시스템.
- 제23항에 있어서,상기 메모리 소자는 기판 위에 메모리 재료를 포함하고, 상기 제1 칼코겐화합물 재료는 상기 메모리 재료 위에 있고, 상기 제2 칼코겐화합물 재료는 상기 제1 칼코겐화합물 재료 위에 있는 시스템.
- 제23항에 있어서,기판 위에 수직 구조체를 더 포함하고, 상기 수직 구조체는 서로 직렬 연결된 상기 제1 액세스 디바이스, 상기 제2 액세스 디바이스, 및 상기 메모리 소자를 포함하는 시스템.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US10/319,769 | 2002-12-13 | ||
US10/319,769 US6795338B2 (en) | 2002-12-13 | 2002-12-13 | Memory having access devices using phase change material such as chalcogenide |
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KR20050085533A KR20050085533A (ko) | 2005-08-29 |
KR100669313B1 true KR100669313B1 (ko) | 2007-01-16 |
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KR1020057010582A KR100669313B1 (ko) | 2002-12-13 | 2003-05-22 | 메모리 및 액세스 디바이스 |
Country Status (8)
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US (1) | US6795338B2 (ko) |
JP (1) | JP4869600B2 (ko) |
KR (1) | KR100669313B1 (ko) |
CN (1) | CN100552812C (ko) |
AU (1) | AU2003241617A1 (ko) |
MY (1) | MY133250A (ko) |
TW (1) | TWI237315B (ko) |
WO (1) | WO2004055828A2 (ko) |
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JP4254293B2 (ja) * | 2003-03-25 | 2009-04-15 | 株式会社日立製作所 | 記憶装置 |
KR100773537B1 (ko) * | 2003-06-03 | 2007-11-07 | 삼성전자주식회사 | 한 개의 스위칭 소자와 한 개의 저항체를 포함하는비휘발성 메모리 장치 및 그 제조 방법 |
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US6795338B2 (en) | 2004-09-21 |
JP4869600B2 (ja) | 2012-02-08 |
AU2003241617A1 (en) | 2004-07-09 |
US20040114413A1 (en) | 2004-06-17 |
MY133250A (en) | 2007-10-31 |
JP2006510220A (ja) | 2006-03-23 |
TW200410327A (en) | 2004-06-16 |
TWI237315B (en) | 2005-08-01 |
CN100552812C (zh) | 2009-10-21 |
CN1714406A (zh) | 2005-12-28 |
WO2004055828A3 (en) | 2004-11-04 |
KR20050085533A (ko) | 2005-08-29 |
WO2004055828A2 (en) | 2004-07-01 |
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