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    • 1. 发明专利
    • Resistance-change semiconductor memory
    • 电阻变化半导体存储器
    • JP2012015458A
    • 2012-01-19
    • JP2010153205
    • 2010-07-05
    • Toshiba Corp株式会社東芝
    • INABA TSUNEO
    • H01L27/10G11C13/00H01L21/8246H01L27/105H01L45/00H01L49/00
    • H01L27/2463G11C5/06G11C5/08G11C11/00G11C11/02G11C11/16G11C11/1655G11C11/1659G11C11/1673G11C11/1675G11C11/1693G11C11/56H01L27/228H01L27/2436
    • PROBLEM TO BE SOLVED: To present a layout which reduces cell area and improves operation characteristics excellently.SOLUTION: The resistance-change semiconductor memory has first through fourth memory cells arranged in the first direction. Each of the first through fourth memory cells includes cell transistors T11, T12, T13, T14 having first source/drain connected with a first bit line BLA1 extending in the first direction, and a gate connected with word lines WL1, WL2, WL3, Wl4 extending in the second direction, and resistive memory elements M11, M12, M13, M14 having one end connected with the second source/drain of the cell transistors T11, T12, T13, T14 and the other end connected with second bit lines BLB1, BLB2, BLB3, BLB4 extending in the second direction. First sources/drains in the first and second memory cells are shared, and first sources/drains in the third and fourth memory cells are shared.
    • 要解决的问题:提出减少细胞面积并提高操作特性的布局。 解决方案:电阻变化半导体存储器具有沿第一方向布置的第一至第四存储单元。 第一至第四存储单元中的每一个包括具有与在第一方向上延伸的第一位线BLA1连接的第一源极/漏极的单元晶体管T11,T12,T13,T14,以及与字线WL1,WL2,WL3,W114连接的栅极 在第二方向上延伸的电阻式存储元件M11,M12,M13,M14,其一端与单元晶体管T11,T12,T13,T14的第二源极/漏极连接,另一端与第二位线BLB1,BLB2连接 ,BLB3,BLB4沿第二方向延伸。 共享第一和第二存储器单元中的第一源/漏极,并且共享第三和第四存储器单元中的第一源极/漏极。 版权所有(C)2012,JPO&INPIT
    • 7. 发明专利
    • Magnetic memory
    • 磁记忆
    • JP2013201220A
    • 2013-10-03
    • JP2012067899
    • 2012-03-23
    • Toshiba Corp株式会社東芝
    • SHIMOMURA NAOHARU
    • H01L21/8246G11C11/15H01L27/105
    • G11C11/16G11C11/02G11C11/161
    • PROBLEM TO BE SOLVED: To provide a magnetic memory and a method for reading out from it that can prevent read disturbance.SOLUTION: A magnetic memory of an embodiment comprises a memory cell including: a first MTJ element comprising a first storage layer including a magnetic layer having direction variable magnetization, a first reference layer including a magnetic layer having direction invariable magnetization, and a first tunnel barrier layer provided between the first storage layer and the first reference layer; and a second MTJ element comprising a second storage layer including a magnetic layer having direction variable magnetization and magnetically coupling with the first storage layer, a second reference layer including a magnetic layer having direction invariable magnetization parallel to the magnetization of the first reference layer, and a second tunnel barrier layer provided between the second storage layer and the second reference layer, and arranged in parallel to the first MTJ element in the direction orthogonal to the lamination direction of the layer of the first MTJ element.
    • 要解决的问题:提供一种可以防止读取干扰的磁存储器和从其读出的方法。解决方案:实施例的磁存储器包括:存储单元,包括:第一MTJ元件,包括第一存储层,包括磁性 具有方向可变磁化的层,包括具有方向不变磁化的磁性层的第一参考层和设置在第一存储层和第一参考层之间的第一隧道势垒层; 以及第二MTJ元件,包括第二存储层,所述第二存储层包括具有方向可变磁化和与所述第一存储层磁耦合的磁性层;第二参考层,包括具有与所述第一参考层的磁化强度平行的方向不变磁化的磁性层;以及 第二隧道势垒层,设置在第二存储层和第二参考层之间,并且在与第一MTJ元件的层的层叠方向正交的方向上与第一MTJ元件平行布置。
    • 9. 发明专利
    • Magnetic memory
    • 磁记忆
    • JP2012178541A
    • 2012-09-13
    • JP2011237544
    • 2011-10-28
    • Renesas Electronics Corpルネサスエレクトロニクス株式会社
    • KARIYADA HIDETSUGUSUEMITSU KATSUMITANIGAWA HIRONOBUMORI KAORUSUZUKI AKIHIRONAGAHARA KIYOKAZUOZAKI KOSUKEOSHIMA NORIKAZU
    • H01L27/105H01L21/8246H01L29/82H01L43/08
    • H01L43/10G01R33/091G01R33/098G11C11/02G11C11/14G11C11/15G11C11/161Y10T428/1114Y10T428/1121Y10T428/1143
    • PROBLEM TO BE SOLVED: To provide a magnetic memory in which a data storage layer has strong vertical magnetic anisotropy and magnetic coupling is strong between the data storage layer and a magnetization fixed layer provided below the data storage layer.SOLUTION: A magnetic memory comprises magnetization fixed layers 50a and 50b which have vertical magnetic anisotropy and in which a magnetization direction is fixed, an interlayer insulation layer 60, an underlying layer 40 formed on upper surfaces of the magnetization fixed layers 50a and 50b and the interlayer insulation layer 60, and a data storage layer 10 which is formed on an upper surface of the underlying layer 40 and has vertical magnetic anisotropy. The underlying layer 40 includes a first magnetic underlying layer 41 formed from a magnetic material and a non-magnetic underlying layer 42 formed on the first magnetic underlying layer 41. A thickness of the first magnetic underlying layer 41 is adjusted to prevent the first magnetic underlying layer 41 from presenting intra-plane magnetic anisotropy on the interlayer insulation layer 60.
    • 要解决的问题:提供一种数据存储层在数据存储层和设置在数据存储层下方的磁化固定层之间具有强垂直磁各向异性并且磁耦合强的磁存储器。 解决方案:磁存储器包括具有垂直磁各向异性并且其中磁化方向固定的磁化固定层50a和50b,层间绝缘层60,形成在磁化固定层50a的上表面上的下层40和 50b和层间绝缘层60,以及形成在下层40的上表面上并具有垂直磁各向异性的数据存储层10。 下层40包括由磁性材料形成的第一磁性下层41和形成在第一磁性下层41上的非磁性下层42.调整第一磁性下层41的厚度以防止第一磁性底层 层41在层间绝缘层60上呈现面内磁各向异性。版权所有(C)2012,JPO&INPIT