JP2005236169A - 磁気シールド体、磁気シールド構造及び磁気メモリ装置 - Google Patents
磁気シールド体、磁気シールド構造及び磁気メモリ装置 Download PDFInfo
- Publication number
- JP2005236169A JP2005236169A JP2004045859A JP2004045859A JP2005236169A JP 2005236169 A JP2005236169 A JP 2005236169A JP 2004045859 A JP2004045859 A JP 2004045859A JP 2004045859 A JP2004045859 A JP 2004045859A JP 2005236169 A JP2005236169 A JP 2005236169A
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- JP
- Japan
- Prior art keywords
- magnetic
- magnetic shield
- magnetic field
- mram
- external
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/552—Protection against radiation, e.g. light or electromagnetic waves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/14—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by provisions for nesting or stacking, e.g. shopping trolleys
- B62B3/148—Adaptations facilitating the transport to the counter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
- B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
- B62B3/002—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by a rectangular shape, involving sidewalls or racks
- B62B3/004—Details of doors or cover lids
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Transportation (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Toxicology (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Mram Or Spin Memory Techniques (AREA)
- Hall/Mr Elements (AREA)
- Structures Or Materials For Encapsulating Or Coating Semiconductor Devices Or Solid State Devices (AREA)
- Semiconductor Memories (AREA)
Abstract
【解決手段】磁化方向が固定された磁化固定層と、磁化方向の変化が可能な磁性層(記憶層)とがトンネルバリア層を介して積層されてなるTMR素子からなる磁気ランダムアクセスメモリ(MRAM)30が樹脂等の封止材32によって封止されている磁気メモリ装置に好適であって、MRAM30を磁気シールドするために封止材32上に設けた磁気シールド板62A、62Bの平面形状又は断面形状が、外部磁界の方向とほぼ垂直な辺とほぼ平行な辺とが直交しない形状、特に円形、多角形等であることによって、磁気シールド板の磁気飽和を緩和して磁気シールド効果を保持できる。
【選択図】図5
Description
52、52A、52B、62、62A、62B、72…磁気シールド板、
60、70…角部、52A’、62A’…磁気シールド板の8分の1モデル、
62a〜62e、72a〜72e…辺
Claims (10)
- 平面形状又は/及び断面形状において、外部磁界の侵入側及び放出側の各辺とその隣接辺とのなす角度が、それぞれ鈍角である、磁気シールド体。
- 前記平面形状又は/及び前記断面形状がn角形(但し、nは、n≧5の条件を満たす整数である。)である、請求項1に記載した磁気シールド体。
- 平面形状又は/及び断面形状がm角形(但し、mは、m≧4の条件を満たす整数である。)であり、外部磁界の侵入側及び放出側の各辺とその隣接辺とのなす角部が外向きの曲線状をなしている、磁気シールド体。
- 前記角部が、直線状の両辺間に存在している、請求項3に記載した磁気シールド体。
- 平面形状又は/及び断面形状が、その全域で連続した面を形成していると共に、その外周辺のうち、少なくとも外部磁界の侵入側及び放出側が外向きの曲線状をなしている、磁気シールド体。
- 前記平面形状又は/及び前記断面形状が円形又は楕円形である、請求項5に記載した磁気シールド体。
- 請求項1〜6のいずれか1項に記載した磁気シールド体の少なくとも1つが設置されてなる、磁気シールド構造。
- 磁気メモリ部を有し、この磁気メモリ部に対向して、請求項1〜6のいずれか1項に記載した磁気シールド体を有する、磁気メモリ装置。
- 磁化方向が固定された磁化固定層と、磁化方向の変化が可能な磁性層とが積層されてなるメモリ素子からなる磁気ランダムアクセスメモリとして前記磁気メモリ部が構成され、前記磁気ランダムアクセスメモリに対向して前記磁気シールド体を有する、請求項8に記載した磁気メモリ装置。
- 前記磁気シールド体の一対が平行に設置され、これらの磁気シールド体間に、前記磁気メモリ部が配置されている、請求項8又は9に記載した磁気メモリ装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004045859A JP4742502B2 (ja) | 2004-02-23 | 2004-02-23 | 磁気シールド体、磁気シールド構造及び磁気メモリ装置 |
US11/053,650 US7459769B2 (en) | 2004-02-23 | 2005-02-08 | Magnetic shield member, magnetic shield structure, and magnetic memory device |
KR1020050013495A KR101217920B1 (ko) | 2004-02-23 | 2005-02-18 | 자기 실드체, 자기 실드 구조 및 자기 메모리 장치 |
DE602005016625T DE602005016625D1 (de) | 2004-02-23 | 2005-02-18 | Magnetische Abschirmung und magnetische Speichervorrichtung |
EP05003577A EP1575054B1 (en) | 2004-02-23 | 2005-02-18 | Magnetic shield member, magnetic shield structure, and magnetic memory device |
TW094105486A TWI279784B (en) | 2004-02-23 | 2005-02-23 | Magnetic shield member, magnetic shield structure, and magnetic memory device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004045859A JP4742502B2 (ja) | 2004-02-23 | 2004-02-23 | 磁気シールド体、磁気シールド構造及び磁気メモリ装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005236169A true JP2005236169A (ja) | 2005-09-02 |
JP4742502B2 JP4742502B2 (ja) | 2011-08-10 |
Family
ID=34824495
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004045859A Expired - Fee Related JP4742502B2 (ja) | 2004-02-23 | 2004-02-23 | 磁気シールド体、磁気シールド構造及び磁気メモリ装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7459769B2 (ja) |
EP (1) | EP1575054B1 (ja) |
JP (1) | JP4742502B2 (ja) |
KR (1) | KR101217920B1 (ja) |
DE (1) | DE602005016625D1 (ja) |
TW (1) | TWI279784B (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010010393A (ja) * | 2008-06-26 | 2010-01-14 | Nec Corp | 磁気ランダムアクセスメモリ |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7712147B2 (en) * | 2002-12-18 | 2010-05-04 | Nxp B.V. | Method and device for protection of an mram device against tampering |
AU2003285646A1 (en) * | 2002-12-18 | 2004-07-09 | Koninklijke Philips Electronics N.V. | Method and device for protection of an mram device against tampering |
KR100676089B1 (ko) * | 2005-07-18 | 2007-02-02 | 성균관대학교산학협력단 | 기능화된 다공성 양극산화 알루미늄의 제조방법 및 그를이용한 광간섭 바이오센서의 제조방법 및 바이오센서 |
US8269319B2 (en) * | 2006-10-13 | 2012-09-18 | Tessera, Inc. | Collective and synergistic MRAM shields |
US8413892B2 (en) | 2007-12-24 | 2013-04-09 | Dynamics Inc. | Payment cards and devices with displays, chips, RFIDs, magnetic emulators, magnetic encoders, and other components |
US8415775B2 (en) | 2010-11-23 | 2013-04-09 | Honeywell International Inc. | Magnetic shielding for multi-chip module packaging |
US8416538B2 (en) | 2011-07-29 | 2013-04-09 | Seagate Technology Llc | Shaped shield for a magnetoresistive head |
JP5718830B2 (ja) * | 2012-01-16 | 2015-05-13 | トヨタ自動車株式会社 | 車両 |
US9070692B2 (en) | 2013-01-12 | 2015-06-30 | Avalanche Technology, Inc. | Shields for magnetic memory chip packages |
JP6068281B2 (ja) * | 2013-07-12 | 2017-01-25 | アキム株式会社 | 部品の固定治具および固定装置、ならびに固定搬送キャリア |
JP6010005B2 (ja) | 2013-09-09 | 2016-10-19 | 株式会社東芝 | 半導体装置及びその製造方法 |
JP6074345B2 (ja) | 2013-09-24 | 2017-02-01 | 株式会社東芝 | 半導体装置及びその製造方法 |
US10373752B2 (en) | 2014-04-02 | 2019-08-06 | Franck Natali | Magnetic materials and devices comprising rare earth nitrides |
US9986639B2 (en) | 2015-06-29 | 2018-05-29 | Analog Devices Global | Vertical magnetic barrier for integrated electronic module and related methods |
US11139341B2 (en) | 2018-06-18 | 2021-10-05 | Taiwan Semiconductor Manufacturing Company, Ltd. | Protection of MRAM from external magnetic field using magnetic-field-shielding structure |
US11088083B2 (en) * | 2018-06-29 | 2021-08-10 | Taiwan Semiconductor Manufacturing Company, Ltd. | DC and AC magnetic field protection for MRAM device using magnetic-field-shielding structure |
US10818609B2 (en) * | 2018-07-13 | 2020-10-27 | Taiwan Semiconductor Manufacturing Company Ltd. | Package structure and method for fabricating the same |
US11258356B2 (en) * | 2019-07-31 | 2022-02-22 | Analog Devices International Unlimited Company | Magnetic barrier for power module |
CN113901694B (zh) * | 2021-10-25 | 2022-05-17 | 北京昆迈医疗科技有限公司 | 磁屏蔽筒的设计方法及其装置、医学图像采集系统 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08250890A (ja) * | 1995-03-09 | 1996-09-27 | Nec Corp | 混成集積回路装置 |
JPH09186482A (ja) * | 1995-12-28 | 1997-07-15 | Kokusai Electric Co Ltd | 音圧劣化防止装置 |
US20010050175A1 (en) * | 1997-07-03 | 2001-12-13 | Pulver Lee J. | Electromagnetic radiation shield for attenuating electromagnetic radiation from an active electronic device |
JP2002158480A (ja) * | 2000-11-21 | 2002-05-31 | Kowa Co | 電磁波シールド板 |
JP2003124538A (ja) * | 2001-10-16 | 2003-04-25 | Sony Corp | 情報記憶装置およびその情報記憶装置を実装した電子機器 |
US20030132494A1 (en) * | 2002-01-15 | 2003-07-17 | Tuttle Mark E | Magnetic shield for integrated circuit packaging |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4953002A (en) * | 1988-03-31 | 1990-08-28 | Honeywell Inc. | Semiconductor device housing with magnetic field protection |
US5001448A (en) * | 1989-12-18 | 1991-03-19 | General Electric Company | Shield for a magnet |
US6350951B1 (en) * | 1997-12-29 | 2002-02-26 | Intel Corporation | Electric shielding of on-board devices |
KR20010092940A (ko) * | 2000-03-27 | 2001-10-27 | 김정식 | 전자기파 차단 패널 |
US6452253B1 (en) * | 2000-08-31 | 2002-09-17 | Micron Technology, Inc. | Method and apparatus for magnetic shielding of an integrated circuit |
US6717241B1 (en) * | 2000-08-31 | 2004-04-06 | Micron Technology, Inc. | Magnetic shielding for integrated circuits |
US6614102B1 (en) * | 2001-05-04 | 2003-09-02 | Amkor Technology, Inc. | Shielded semiconductor leadframe package |
-
2004
- 2004-02-23 JP JP2004045859A patent/JP4742502B2/ja not_active Expired - Fee Related
-
2005
- 2005-02-08 US US11/053,650 patent/US7459769B2/en not_active Expired - Fee Related
- 2005-02-18 EP EP05003577A patent/EP1575054B1/en not_active Expired - Fee Related
- 2005-02-18 KR KR1020050013495A patent/KR101217920B1/ko active IP Right Grant
- 2005-02-18 DE DE602005016625T patent/DE602005016625D1/de active Active
- 2005-02-23 TW TW094105486A patent/TWI279784B/zh not_active IP Right Cessation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08250890A (ja) * | 1995-03-09 | 1996-09-27 | Nec Corp | 混成集積回路装置 |
JPH09186482A (ja) * | 1995-12-28 | 1997-07-15 | Kokusai Electric Co Ltd | 音圧劣化防止装置 |
US20010050175A1 (en) * | 1997-07-03 | 2001-12-13 | Pulver Lee J. | Electromagnetic radiation shield for attenuating electromagnetic radiation from an active electronic device |
JP2002158480A (ja) * | 2000-11-21 | 2002-05-31 | Kowa Co | 電磁波シールド板 |
JP2003124538A (ja) * | 2001-10-16 | 2003-04-25 | Sony Corp | 情報記憶装置およびその情報記憶装置を実装した電子機器 |
US20030132494A1 (en) * | 2002-01-15 | 2003-07-17 | Tuttle Mark E | Magnetic shield for integrated circuit packaging |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010010393A (ja) * | 2008-06-26 | 2010-01-14 | Nec Corp | 磁気ランダムアクセスメモリ |
Also Published As
Publication number | Publication date |
---|---|
US20050230788A1 (en) | 2005-10-20 |
DE602005016625D1 (de) | 2009-10-29 |
KR20060042978A (ko) | 2006-05-15 |
EP1575054B1 (en) | 2009-09-16 |
EP1575054A2 (en) | 2005-09-14 |
EP1575054A3 (en) | 2007-03-07 |
KR101217920B1 (ko) | 2013-01-02 |
JP4742502B2 (ja) | 2011-08-10 |
US7459769B2 (en) | 2008-12-02 |
TWI279784B (en) | 2007-04-21 |
TW200603101A (en) | 2006-01-16 |
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