KR20030009097A - 클래드형 판독 도전체를 포함하는 터널 접합 - Google Patents
클래드형 판독 도전체를 포함하는 터널 접합 Download PDFInfo
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- KR20030009097A KR20030009097A KR1020020017990A KR20020017990A KR20030009097A KR 20030009097 A KR20030009097 A KR 20030009097A KR 1020020017990 A KR1020020017990 A KR 1020020017990A KR 20020017990 A KR20020017990 A KR 20020017990A KR 20030009097 A KR20030009097 A KR 20030009097A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
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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
- G11C11/02—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
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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
- G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
- G11C11/16—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect
- G11C11/161—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect details concerning the memory cell structure, e.g. the layers of the ferromagnetic memory cell
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/32—Spin-exchange-coupled multilayers, e.g. nanostructured superlattices
- H01F10/324—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer
- H01F10/3254—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer the spacer being semiconducting or insulating, e.g. for spin tunnel junction [STJ]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/32—Spin-exchange-coupled multilayers, e.g. nanostructured superlattices
- H01F10/324—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer
- H01F10/3268—Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer the exchange coupling being asymmetric, e.g. by use of additional pinning, by using antiferromagnetic or ferromagnetic coupling interface, i.e. so-called spin-valve [SV] structure, e.g. NiFe/Cu/NiFe/FeMn
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B61/00—Magnetic memory devices, e.g. magnetoresistive RAM [MRAM] 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
- H10N50/00—Galvanomagnetic devices
- H10N50/10—Magnetoresistive devices
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Computer Hardware Design (AREA)
- Power Engineering (AREA)
- Nanotechnology (AREA)
- Hall/Mr Elements (AREA)
- Semiconductor Memories (AREA)
- Mram Or Spin Memory Techniques (AREA)
Abstract
Description
Claims (10)
- 터널 접합(tunnel junction)으로서,변경 가능한 자화 방향(alterable orientation of magnetization)(M2)으로서 데이터 비트를 저장하는 데이터층(data layer)(11)과,상기 데이터층(11)과 접촉하고 있는 장벽층(barrier layer)(13)과,상기 장벽층(13)과 접촉하고 있는 캡층(cap layer)(15)과,상기 캡층(15)과 접촉하고 있고, 비고정형(non-pinned) 자화 방향(M1)을 가지며, 판독 도전체 및 상기 판독 도전체(19)를 완전히 둘러싸는 클래딩(cladding)(21)을 포함하는 연질 기준층(soft reference layer)(17)을 포함하되,상기 판독 도전체(19)는 외부적으로 공급된 전류(externally supplied current)에 응답하여 자기장을 생성하도록 동작하고,상기 클래딩(21)은 상기 자기장을 상기 클래딩(21) 내부에 실질적으로 함유하도록 동작하여 상기 클래딩(21) 내부에 함유되지 않는 어떠한 자기장에 의하여도 상기 변경 가능한 자화 방향(M2)이 영향을 받지 않으며,상기 판독 도전체(19)를 통하여 사전 결정된 크기 및 방향으로 전류를 통과시킴으로써 상기 연질 기준층(17)의 상기 자화 방향(M1)은 바람직한 방향으로 온 더 플라이 고정(pinned-on-the-fly)되고 상기 연질 기준층(17)과 상기 데이터층(11) 사이의 전압을 측정함으로써 상기 비트가 판독되는터널 접합.
- 제 1 항에 있어서,데이터층(11), 캡층(15), 및 클래딩(21) 중 임의로 선택된 하나 또는 그 이상의 것은 고 투자율 연질 자성체(high magnetic permeability soft magnetic material)로 구성되는터널 접합.
- 제 2 항에 있어서,상기 고 투자율 연질 자성체는 니켈 철(nickel iron), 니켈 철 합금(nickel iron alloy), 니켈 철 코발트(nickel iron cobalt), 니켈 철 코발트 합금(nickel iron cobalt alloy), 코발트 철(cobalt iron), 및 퍼멀로이(PERMALLOY)로 구성된 그룹 중에서 선택된 물질인터널 접합.
- 제 1 항에 있어서,상기 데이터층(11)과, 상기 캡층(15)과, 상기 클래딩(21)이동일한(identical) 고 투자율 연질 자성체로 구성되는터널 접합.
- 제 1 항에 있어서,데이터층(11), 캡층(15), 및 클래딩(21) 중 임의로 선택된 하나 또는 그 이상의 것은 약 1000보다 큰 상대적 투자율을 가지는터널 접합.
- 제 1 항에 있어서,데이터층(11), 캡층(15), 및 클래딩(21) 중 임의로 선택된 하나 또는 그 이상의 것은 약 1000A/m 이하의 보자성(coercivity)을 갖는터널 접합.
- 제 1 항에 있어서,상기 장벽층(13)은 산화 실리콘(silicon oxide), 산화 마그네슘(magnesium oxide), 질화 실리콘(silicon nitride), 산화 알루미늄(aluminum oxide), 산화 탄탈룸(tantalum oxide), 및 질화 알루미늄(aluminum nitride)으로 구성된 그룹으로부터 선택된 절연 물질(dielectric material)인터널 접합.
- 제 1 항에 있어서,상기 판독 도전체(19)는 구리(cooper), 구리 합금(cooper alloy), 알루미늄, 알루미늄 합금, 알루미늄 구리, 알루미늄 구리 합금, 탄탈룸, 탄탈룸 합금, 금(gold), 금 합금(gold alloy), 은(silver), 및 은 합금(silver alloy)으로 구성된 그룹으로부터 선택된 전기 도전 물질인터널 접합.
- 변경 가능한 자화 방향에 의하여 데이터 비트를 저장하는 데이터층과, 상기 데이터층에 접촉하고 있는 제 1 도전체(first conductor)와, 이미 알려져 있는 방향(known direction)으로 고정된 자화 방향을 갖는 기준층과, 상기 기준층에 접촉하고 있는 제 2 도전체와, 상기 데이터층 및 상기 기준층 사이에 터널 장벽층을 포함하되, 상기 비트는 상기 제 1 및 제 2 도전체를 통하여 제 1 및 제 2 전류를 통과시키고 상기 제 1 및 제 2 도전체 사이의 전압을 측정함으로써 판독되는 터널 접합으로서, 개량되어,비고정형 자화 방향(M1)을 가지며 판독 도전체(19) 및 상기 판독 도전체(19)를 완전히 둘러싸는 클래딩(21)을 포함하는 연질 기준층(17)과,상기 터널 장벽층과 상기 연질 기준층(17) 사이의 캡층(15)을 포함하고,상기 판독 도전체(19)는 외부적으로 공급된 전류에 응답하여 자기장을 생성하도록 동작하고,상기 클래딩(21)은 실제적으로 상기 클래딩(21) 내부에 상기 자기장을 함유하여 상기 클래딩(21) 내부에 함유되지 않는 어떠한 자기장에 의하여도 상기 변경 가능한 자화 방향(M2)이 영향을 받지 않도록 동작하며,상기 연질 기준층(17)의 상기 자화 방향(M1)은 상기 판독 도전체(19)만을 통하여 사전 결정된 크기 및 방향으로 전류를 통과시킴으로써 바람직한 방향으로 온 더 플라이 고정되고, 상기 비트는 상기 연질 기준층과 상기 제 1 도전체 사이의 전압을 측정함으로써 판독되는터널 접합.
- 제 9 항에 있어서,데이터층(11), 캡층(15), 및 클래딩(21) 중 임의로 선택된 하나 또는 그 이상의 것은 고 투자율 연질 자성체를 포함하는터널 접합.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US09/825,093 | 2001-04-02 | ||
US09/825,093 US6538920B2 (en) | 2001-04-02 | 2001-04-02 | Cladded read conductor for a pinned-on-the-fly soft reference layer |
Publications (2)
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KR20030009097A true KR20030009097A (ko) | 2003-01-29 |
KR100816747B1 KR100816747B1 (ko) | 2008-03-26 |
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KR1020020017990A KR100816747B1 (ko) | 2001-04-02 | 2002-04-02 | 클래드형 판독 도전체를 포함하는 터널 접합 |
Country Status (7)
Country | Link |
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US (1) | US6538920B2 (ko) |
EP (1) | EP1248273B1 (ko) |
JP (1) | JP3942930B2 (ko) |
KR (1) | KR100816747B1 (ko) |
CN (1) | CN1379485A (ko) |
DE (1) | DE60201203T2 (ko) |
TW (1) | TW541529B (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8791043B2 (en) | 2008-12-31 | 2014-07-29 | Samsung Electronics Co., Ltd. | Ordered mesoporous carbon composite catalyst, method of manufacturing the same, and fuel cell using the same |
Families Citing this family (52)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6576969B2 (en) * | 2001-09-25 | 2003-06-10 | Hewlett-Packard Development Company, L.P. | Magneto-resistive device having soft reference layer |
US6504221B1 (en) * | 2001-09-25 | 2003-01-07 | Hewlett-Packard Company | Magneto-resistive device including soft reference layer having embedded conductors |
JP2003151262A (ja) * | 2001-11-15 | 2003-05-23 | Toshiba Corp | 磁気ランダムアクセスメモリ |
US6661688B2 (en) * | 2001-12-05 | 2003-12-09 | Hewlett-Packard Development Company, L.P. | Method and article for concentrating fields at sense layers |
US6750491B2 (en) * | 2001-12-20 | 2004-06-15 | Hewlett-Packard Development Company, L.P. | Magnetic memory device having soft reference layer |
US6525957B1 (en) * | 2001-12-21 | 2003-02-25 | Motorola, Inc. | Magnetic memory cell having magnetic flux wrapping around a bit line and method of manufacturing thereof |
US6815248B2 (en) * | 2002-04-18 | 2004-11-09 | Infineon Technologies Ag | Material combinations for tunnel junction cap layer, tunnel junction hard mask and tunnel junction stack seed layer in MRAM processing |
US6780653B2 (en) | 2002-06-06 | 2004-08-24 | Micron Technology, Inc. | Methods of forming magnetoresistive memory device assemblies |
US6683815B1 (en) * | 2002-06-26 | 2004-01-27 | Silicon Magnetic Systems | Magnetic memory cell and method for assigning tunable writing currents |
US6806523B2 (en) * | 2002-07-15 | 2004-10-19 | Micron Technology, Inc. | Magnetoresistive memory devices |
US20040012802A1 (en) * | 2002-07-17 | 2004-01-22 | Allen Kram H. | System and method for printing a data file |
US6885576B2 (en) * | 2002-08-13 | 2005-04-26 | Micron Technology, Inc. | Closed flux magnetic memory |
JP3788964B2 (ja) | 2002-09-10 | 2006-06-21 | 株式会社東芝 | 磁気ランダムアクセスメモリ |
US6870758B2 (en) * | 2002-10-30 | 2005-03-22 | Hewlett-Packard Development Company, L.P. | Magnetic memory device and methods for making same |
JP3906145B2 (ja) * | 2002-11-22 | 2007-04-18 | 株式会社東芝 | 磁気ランダムアクセスメモリ |
JP4720067B2 (ja) * | 2003-01-24 | 2011-07-13 | Tdk株式会社 | 磁気記憶セルおよび磁気メモリデバイスならびに磁気メモリデバイスの製造方法 |
DE10309244A1 (de) * | 2003-03-03 | 2004-09-23 | Siemens Ag | Magnetisches Speicherelement, insbesondere MRAM-Element, mit einem TMR-Dünnschichtensystem |
JP4283011B2 (ja) * | 2003-03-13 | 2009-06-24 | Tdk株式会社 | 磁気メモリデバイスおよびその読出方法 |
US6963500B2 (en) * | 2003-03-14 | 2005-11-08 | Applied Spintronics Technology, Inc. | Magnetic tunneling junction cell array with shared reference layer for MRAM applications |
JP4365604B2 (ja) * | 2003-03-24 | 2009-11-18 | Tdk株式会社 | 磁気メモリデバイスおよびセンスアンプ回路、ならびに磁気メモリデバイスの読出方法 |
US7067866B2 (en) * | 2003-03-31 | 2006-06-27 | Applied Spintronics Technology, Inc. | MRAM architecture and a method and system for fabricating MRAM memories utilizing the architecture |
US6921953B2 (en) * | 2003-04-09 | 2005-07-26 | Micron Technology, Inc. | Self-aligned, low-resistance, efficient MRAM read/write conductors |
US6982445B2 (en) * | 2003-05-05 | 2006-01-03 | Applied Spintronics Technology, Inc. | MRAM architecture with a bit line located underneath the magnetic tunneling junction device |
JP4556385B2 (ja) * | 2003-05-27 | 2010-10-06 | Tdk株式会社 | 磁気メモリデバイスの製造方法 |
US6885582B2 (en) * | 2003-06-12 | 2005-04-26 | Hewlett-Packard Development Company, L.P. | Magnetic memory storage device |
US6819587B1 (en) * | 2003-06-12 | 2004-11-16 | Hewlett-Packard Development Company, L.P. | Thermal-assisted nanotip magnetic memory storage device |
US7161875B2 (en) * | 2003-06-12 | 2007-01-09 | Hewlett-Packard Development Company, L.P. | Thermal-assisted magnetic memory storage device |
US7078239B2 (en) * | 2003-09-05 | 2006-07-18 | Micron Technology, Inc. | Integrated circuit structure formed by damascene process |
US7027320B2 (en) * | 2003-10-21 | 2006-04-11 | Hewlett-Packard Development Company, L.P. | Soft-reference magnetic memory digitized device and method of operation |
KR101001742B1 (ko) | 2003-10-24 | 2010-12-15 | 삼성전자주식회사 | 자기 램 및 그 제조방법 |
US7026673B2 (en) * | 2003-12-11 | 2006-04-11 | International Business Machines Corporation | Low magnetization materials for high performance magnetic memory devices |
US6980466B2 (en) * | 2004-01-15 | 2005-12-27 | Hewlett-Packard Development Company, L.P. | Soft-reference four conductor magnetic memory storage device |
US7102920B2 (en) * | 2004-03-23 | 2006-09-05 | Hewlett-Packard Development Company, L.P. | Soft-reference three conductor magnetic memory storage device |
KR100684893B1 (ko) * | 2005-03-28 | 2007-02-20 | 삼성전자주식회사 | 자기 메모리 장치 및 그 제조방법 |
US7444738B2 (en) * | 2005-07-29 | 2008-11-04 | Everspin Technologies, Inc. | Method for tunnel junction sensor with magnetic cladding |
US20090027948A1 (en) * | 2007-07-24 | 2009-01-29 | Manfred Ruehrig | Integrated Circuits, Method of Programming a Cell, Thermal Select Magnetoresistive Element, Memory Module |
CN101472455A (zh) * | 2007-12-29 | 2009-07-01 | 3M创新有限公司 | 电磁屏蔽衬垫和用于填充电磁屏蔽系统中的间隙的方法 |
US7760542B2 (en) * | 2008-04-21 | 2010-07-20 | Seagate Technology Llc | Spin-torque memory with unidirectional write scheme |
US7804709B2 (en) | 2008-07-18 | 2010-09-28 | Seagate Technology Llc | Diode assisted switching spin-transfer torque memory unit |
US8233319B2 (en) | 2008-07-18 | 2012-07-31 | Seagate Technology Llc | Unipolar spin-transfer switching memory unit |
US8223532B2 (en) * | 2008-08-07 | 2012-07-17 | Seagate Technology Llc | Magnetic field assisted STRAM cells |
US8054677B2 (en) | 2008-08-07 | 2011-11-08 | Seagate Technology Llc | Magnetic memory with strain-assisted exchange coupling switch |
US7746687B2 (en) | 2008-09-30 | 2010-06-29 | Seagate Technology, Llc | Thermally assisted multi-bit MRAM |
US7933137B2 (en) * | 2008-10-08 | 2011-04-26 | Seagate Teachnology Llc | Magnetic random access memory (MRAM) utilizing magnetic flip-flop structures |
US8487390B2 (en) | 2008-10-08 | 2013-07-16 | Seagate Technology Llc | Memory cell with stress-induced anisotropy |
US8217478B2 (en) | 2008-10-10 | 2012-07-10 | Seagate Technology Llc | Magnetic stack with oxide to reduce switching current |
US7940592B2 (en) * | 2008-12-02 | 2011-05-10 | Seagate Technology Llc | Spin-torque bit cell with unpinned reference layer and unidirectional write current |
US7833806B2 (en) * | 2009-01-30 | 2010-11-16 | Everspin Technologies, Inc. | Structure and method for fabricating cladded conductive lines in magnetic memories |
US8053255B2 (en) | 2009-03-03 | 2011-11-08 | Seagate Technology Llc | STRAM with compensation element and method of making the same |
JP6219200B2 (ja) | 2014-02-27 | 2017-10-25 | 株式会社東芝 | 磁気装置 |
US9444036B1 (en) * | 2015-08-25 | 2016-09-13 | HGST Netherlands B.V. | Implementing segregated media based magnetic memory |
JP2017143175A (ja) * | 2016-02-10 | 2017-08-17 | 株式会社東芝 | 磁気記憶装置 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6028786A (en) | 1997-04-28 | 2000-02-22 | Canon Kabushiki Kaisha | Magnetic memory element having coupled magnetic layers forming closed magnetic circuit |
US6111784A (en) | 1997-09-18 | 2000-08-29 | Canon Kabushiki Kaisha | Magnetic thin film memory element utilizing GMR effect, and recording/reproduction method using such memory element |
US6196930B1 (en) | 1997-11-12 | 2001-03-06 | Randy T. Aumock | Extension apparatus for golf club |
US6169686B1 (en) | 1997-11-20 | 2001-01-02 | Hewlett-Packard Company | Solid-state memory with magnetic storage cells |
US5982660A (en) | 1998-08-27 | 1999-11-09 | Hewlett-Packard Company | Magnetic memory cell with off-axis reference layer orientation for improved response |
US6072717A (en) | 1998-09-04 | 2000-06-06 | Hewlett Packard | Stabilized magnetic memory cell |
JP2000090658A (ja) * | 1998-09-09 | 2000-03-31 | Sanyo Electric Co Ltd | 磁気メモリ素子 |
US6365286B1 (en) * | 1998-09-11 | 2002-04-02 | Kabushiki Kaisha Toshiba | Magnetic element, magnetic memory device, magnetoresistance effect head, and magnetic storage system |
US6097626A (en) | 1999-07-28 | 2000-08-01 | Hewlett-Packard Company | MRAM device using magnetic field bias to suppress inadvertent switching of half-selected memory cells |
US6172901B1 (en) | 1999-12-30 | 2001-01-09 | Stmicroelectronics, S.R.L. | Low power static random access memory and method for writing to same |
-
2001
- 2001-04-02 US US09/825,093 patent/US6538920B2/en not_active Expired - Lifetime
- 2001-12-03 TW TW090129843A patent/TW541529B/zh not_active IP Right Cessation
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2002
- 2002-01-31 CN CN02103334A patent/CN1379485A/zh active Pending
- 2002-03-27 EP EP02252256A patent/EP1248273B1/en not_active Expired - Lifetime
- 2002-03-27 DE DE60201203T patent/DE60201203T2/de not_active Expired - Lifetime
- 2002-03-29 JP JP2002095681A patent/JP3942930B2/ja not_active Expired - Lifetime
- 2002-04-02 KR KR1020020017990A patent/KR100816747B1/ko active IP Right Grant
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8791043B2 (en) | 2008-12-31 | 2014-07-29 | Samsung Electronics Co., Ltd. | Ordered mesoporous carbon composite catalyst, method of manufacturing the same, and fuel cell using the same |
Also Published As
Publication number | Publication date |
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US6538920B2 (en) | 2003-03-25 |
JP3942930B2 (ja) | 2007-07-11 |
DE60201203D1 (de) | 2004-10-21 |
EP1248273B1 (en) | 2004-09-15 |
KR100816747B1 (ko) | 2008-03-26 |
TW541529B (en) | 2003-07-11 |
CN1379485A (zh) | 2002-11-13 |
DE60201203T2 (de) | 2005-09-22 |
JP2003030976A (ja) | 2003-01-31 |
US20020186582A1 (en) | 2002-12-12 |
EP1248273A3 (en) | 2002-12-11 |
EP1248273A2 (en) | 2002-10-09 |
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