KR100479012B1 - 전기적으로 프로그램가능한 저 누화 저항 교점 메모리 - Google Patents
전기적으로 프로그램가능한 저 누화 저항 교점 메모리 Download PDFInfo
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- KR100479012B1 KR100479012B1 KR10-2002-0035877A KR20020035877A KR100479012B1 KR 100479012 B1 KR100479012 B1 KR 100479012B1 KR 20020035877 A KR20020035877 A KR 20020035877A KR 100479012 B1 KR100479012 B1 KR 100479012B1
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- Prior art keywords
- bit
- perovskite material
- lower electrode
- electrode
- layer
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- 239000000463 material Substances 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 20
- 239000000758 substrate Substances 0.000 claims description 15
- 238000000151 deposition Methods 0.000 claims description 9
- 239000007772 electrode material Substances 0.000 claims description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 8
- 238000005498 polishing Methods 0.000 claims description 8
- 239000011810 insulating material Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 229910052697 platinum Inorganic materials 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims 2
- 229910021521 yttrium barium copper oxide Inorganic materials 0.000 claims 2
- 238000005530 etching Methods 0.000 claims 1
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 230000004044 response Effects 0.000 abstract description 3
- 239000004020 conductor Substances 0.000 description 7
- 230000008021 deposition Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 3
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004549 pulsed laser deposition Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
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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
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B69/00—Erasable-and-programmable ROM [EPROM] devices not provided for in groups H10B41/00 - H10B63/00, e.g. ultraviolet erasable-and-programmable ROM [UVEPROM] devices
-
- 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
- G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
- G11C11/14—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements
- G11C11/15—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements using multiple magnetic layers
-
- 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
-
- 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
- G11C11/5685—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 storage elements comprising metal oxide memory material, e.g. perovskites
-
- 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
- G11C13/0007—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 metal oxide memory material, e.g. perovskites
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—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
- H01L27/04—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 a semiconductor body
- H01L27/10—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 a semiconductor body including a plurality of individual components in a repetitive configuration
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—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
- H01L27/04—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 a semiconductor body
- H01L27/10—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 a semiconductor body including a plurality of individual components in a repetitive configuration
- H01L27/105—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 a semiconductor body including a plurality of individual components in a repetitive configuration including field-effect components
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C2213/00—Indexing scheme relating to G11C13/00 for features not covered by this group
- G11C2213/30—Resistive cell, memory material aspects
- G11C2213/31—Material having complex metal oxide, e.g. perovskite structure
-
- 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
- G11C2213/77—Array wherein the memory element being directly connected to the bit lines and word lines without any access device being used
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Semiconductor Memories (AREA)
- Hall/Mr Elements (AREA)
- Mram Or Spin Memory Techniques (AREA)
Abstract
Description
Claims (20)
- a) 기판;b) 상기 기판위에 놓이는 복수의 하부 전극;c) 상기 하부 전극 상에 증착된 복수의 개구부를 갖는 절연층;d) 상기 절연층의 개구부에 충전된 페로브스카이트 재료로 이루어지는 활성층;e) 상기 활성층 상에 형성된 복수의 상부 전극을 포함하고,상기 상부 전극은 하부 전극과 서로 교차하는 교점배치로 배열되고, 또한 상기 활성층이 하부 전극과 상부 전극 사이에 배열되는 것을 특징으로 하는 메모리 구조.
- 제 1 항에 있어서,상기 하부 전극은 그 위에 놓이는 페로브스카이트 재료의 에피텍셜 형성을 허용하는 하부 전극 재료를 포함하는 것을 특징으로 하는 메모리 구조.
- 제 2 항에 있어서,상기 하부 전극 재료는 YBCO인 것을 특징으로 하는 메모리 구조.
- 제 1 항에 있어서,상기 하부 전극 재료는 백금을 함유하는 것을 특징으로 하는 메모리 구조.
- 제 1 항에 있어서,상기 활성층은 거대 자기 저항(CMR) 재료인 것을 특징으로 하는 메모리 구조.
- 제 1 항에 있어서,상기 활성층은 Pr0.7Ca0.3MnO3(PCMO)인 것을 특징으로 하는 메모리 구조.
- 제 1 항에 있어서,상기 활성층은 Gd0.7Ca0.3BaCo2O5+5인 것을 특징으로 하는 메모리 구조.
- 서로 교차하는 교점배치로 배열되는 복수의 상부 전극과 복수의 하부 전극을 갖는 메모리 구조를 제조하는 방법으로서,a) 반도체 기판을 제공하는 단계;b) 복수의 하부 전극을 형성하는 단계;c) 상기 하부 전극위에 놓이는 절연 재료를 증착하는 단계;d) 상기 하부 전극에 개구부를 식각하는 단계;e) 상기 하부 전극 및 절연 재료 위에 놓이는 페로브스카이트 재료층을 증착하는 단계;f) 상기 페로브스카이트 재료층을 연마함으로써 페로브스카이트 재료가 상기 개구부에 남게되어 저항 비트를 형성하는 단계; 및g) 상기 페로브스카이트 재료층 위에 놓이는 복수의 상부 전극을 형성하는 단계를 포함하는 것을 특징으로 하는, 메모리 구조의 제조방법.
- 제 8 항에 있어서,상기 하부 전극은 그위에 놓이는 페로브스카이트 재료 층의 에피텍셜 형성을 허용하는 하부 전극 재료를 포함하는 것을 특징으로 하는, 메모리 구조의 제조방법.
- 제 9 항에 있어서,상기 하부 전극 재료는 YBCO인 것을 특징으로 하는, 메모리 구조의 제조방법.
- 제 8 항에 있어서,상기 하부 전극 재료는 백금을 함유하는 것을 특징으로 하는, 메모리 구조의 제조방법.
- 제 8 항에 있어서,상기 절연 재료는 이산화 규소인 것을 특징으로 하는, 메모리 구조의 제조방법.
- 제 8 항에 있어서,상기 페로브스카이트 재료는 거대 자기 저항(CMR) 재료인 것을 특징으로 하는, 메모리 구조의 제조방법.
- 제 8 항에 있어서,상기 페로브스카이트 재료는 Pr0.7Ca0.3MnO3(PCMO)인 것을 특징으로 하는, 메모리 구조의 제조방법.
- 제 8 항에 있어서,상기 페로브스카이트 재료는 Gd0.7Ca0.3BaCo2O5+5인 것을 특징으로 하는, 메모리 구조의 제조방법.
- 제 8 항에 있어서,상기 페로브스카이트 재료를 연마하는 단계는 화학적 기계적 연마를 포함하는 것을 특징으로 하는, 메모리 구조의 제조방법.
- 삭제
- 제 8 항에 있어서,상기 페로브스카이트 재료 층을 증착하기에 앞서 메모리 회로를 형성하는 단계를 더 포함하는 것을 특징으로 하는, 메모리 구조의 제조방법.
- 제 18 항에 있어서,상기 메모리 회로는 인버터의 입력단에 접속되는 비트 패스 트랜지스터와, 상기 인버터의 입력단과 접지사이에 접속되는 로드 트랜지스터를 포함하는 것을 특징으로 하는, 메모리 구조의 제조방법.
- 제 19 항에 있어서,상기 비트 패스 트랜지스터는 n-채널 트랜지스터이며, 상기 로드 트랜지스터는 n-채널 트랜지스터인 것을 특징으로 하는, 메모리 구조의 제조방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/893,830 US6693821B2 (en) | 2001-06-28 | 2001-06-28 | Low cross-talk electrically programmable resistance cross point memory |
US09/893,830 | 2001-06-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20030003025A KR20030003025A (ko) | 2003-01-09 |
KR100479012B1 true KR100479012B1 (ko) | 2005-03-30 |
Family
ID=25402175
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR10-2002-0035877A KR100479012B1 (ko) | 2001-06-28 | 2002-06-26 | 전기적으로 프로그램가능한 저 누화 저항 교점 메모리 |
Country Status (4)
Country | Link |
---|---|
US (2) | US6693821B2 (ko) |
JP (2) | JP2003068983A (ko) |
KR (1) | KR100479012B1 (ko) |
TW (1) | TW550764B (ko) |
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