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    • 6. 发明专利
    • Magnetoresistance effect element
    • 磁阻效应元素
    • JP2013069862A
    • 2013-04-18
    • JP2011207323
    • 2011-09-22
    • Toshiba Corp株式会社東芝
    • MURAYAMA AKIYUKIIKEGAWA SUMIONAKAYAMA MASAHIKOAIKAWA HISANORIKISHI TATSUYA
    • H01L21/8246H01L27/105H01L29/82H01L43/08
    • PROBLEM TO BE SOLVED: To inhibit malfunction of a magnetic memory.SOLUTION: A magnetoresistance effect element of an element comprises: a storage layer having perpendicular magnetic anisotropy and a variable magnetization direction; a reference layer having perpendicular magnetic anisotropy and an invariable magnetization direction; a non-magnetic layer 11 between the storage layer and the reference layer; and a shift adjustment layer having an invariable magnetization direction. The reference layer includes a first temperature dependence LM1 of magnetization and the shift adjustment layer includes a second temperature dependence LM2 of magnetization different from that of the reference layer. A leak field of the reference layer and a leak field of the shift adjustment layer are cancelled with each other under a memory operation temperature. A shift magnetic field caused by one of a leak field of the reference layer and a leak field of the shift adjustment layer is applied to magnetization of the storage layer under a mounting temperature.
    • 要解决的问题:抑制磁存储器的故障。 解决方案:元件的磁阻效应元件包括:具有垂直磁各向异性和可变磁化方向的存储层; 具有垂直磁各向异性和不变磁化方向的参考层; 存储层和参考层之间的非磁性层11; 以及具有不变磁化方向的移位调整层。 参考层包括磁化的第一温度依赖性LM1,移位调整层包括不同于参考层的磁化的第二温度依赖性LM2。 参考层的泄漏场和位移调整层的泄漏场在存储器操作温度下相互抵消。 在安装温度下,对存储层的磁化施加由参考层的泄漏场和移动调整层的泄漏场中的一个引起的移动磁场。 版权所有(C)2013,JPO&INPIT
    • 7. 发明专利
    • Magnetoresistance effect element and magnetic memory
    • 磁阻效应元件和磁记忆
    • JP2012094894A
    • 2012-05-17
    • JP2011286353
    • 2011-12-27
    • Toshiba Corp株式会社東芝
    • OSEGI JUNICHISHIMOMURA NAOHARUIKEGAWA SUMIOKAI TADASHINAKAYAMA MASAHIKOAIKAWA HISANORIKISHI TATSUYAYODA HIROAKI
    • H01L27/105H01L21/8246H01L29/82H01L43/08
    • PROBLEM TO BE SOLVED: To reduce a leakage field applied to a memory layer as much as possible.SOLUTION: A magnetoresistance effect element comprises a ferromagnetic layer 10 having magnetic anisotropy in the direction perpendicular to the film surface, a first nonmagnetic layer 8 provided on the ferromagnetic layer, a reference layer 6 provided on the first nonmagnetic layer and having magnetic anisotropy in the direction perpendicular to the film surface, magnetization anti-parallel with the direction of magnetization of the ferromagnetic layer and a film thickness equal to 1/2.8-1/1.5 that of the ferromagnetic layer in the lamination direction, a second nonmagnetic layer 8 provided on the reference layer, and a memory layer 2 provided on the second nonmagnetic layer and having magnetic anisotropy in the direction perpendicular to the film surface, and direction of magnetization which changes by action of spin-polarized electrons.
    • 要解决的问题:尽可能减少施加到存储器层的泄漏场。 解决方案:磁阻效应元件包括在垂直于膜表面的方向上具有磁各向异性的铁磁层10,设置在铁磁层上的第一非磁性层8,设置在第一非磁性层上并具有磁性的参考层6 在垂直于膜表面的方向上的各向异性,与铁磁层的磁化方向平行的磁化强度和层叠方向上的铁磁层的磁化强度等于1 / 2.8-1 / 1.5的膜厚度,第二非磁性层 8,以及设置在第二非磁性层上并且在垂直于膜表面的方向上具有磁各向异性的存储层2以及由自旋极化电子的作用而改变的磁化方向。 版权所有(C)2012,JPO&INPIT
    • 8. 发明专利
    • Manufacturing method of reluctance element
    • 制动元件的制造方法
    • JP2009194393A
    • 2009-08-27
    • JP2009107971
    • 2009-04-27
    • Toshiba Corp株式会社東芝
    • UEDA TOMOMASAAIKAWA HISANORIYOSHIKAWA MASATOSHISHIMOMURA NAOHARUNAKAYAMA MASAHIKOIKEGAWA SUMIOHOSOYA KEIJINAGAMINE MAKOTO
    • H01L43/12H01L21/8246H01L27/105H01L43/08
    • PROBLEM TO BE SOLVED: To make it possible to manufacture a reluctance element capable of reducing an inversion current when magnetization is inverted in a simple process.
      SOLUTION: The manufacturing method comprises the steps of forming a bottom electrode film on a substrate, forming a laminated film having a laminated structure of a first magnetic layer the magnetization direction of which provides an adhered magnetization adhered layer, a tunnel barrier layer and a second magnetic layer the magnetization direction of which provides a variable magnetization free layer on the bottom electrode film, forming a first top electrode film on the laminated film, patterning the first top electrode film to form a first top electrode, patterning the first top electrode to the second magnetic layer of the laminated layer as a mask, forming an insulating film so as to cover the first top electrode, exposing the top face of the first top electrode, forming a second top electrode film so as to cover the first top electrode, patterning the second top electrode film to form a second top electrode, and processing the second top electrode to the bottom electrode film as a mask with self-alignment.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:为了使得可以在简单的过程中制造当磁化反转时能够降低反转电流的磁阻元件。 解决方案:制造方法包括以下步骤:在基板上形成底电极膜,形成具有层叠结构的叠层膜,该叠层结构具有其磁化方向提供粘附的磁化粘附层的第一磁性层,隧道势垒层 以及第二磁性层,其磁化方向在底部电极膜上提供可变的磁化自由层,在层叠膜上形成第一顶部电极膜,图案化第一顶部电极膜以形成第一顶部电极,使第一顶部 电极到层叠层的第二磁性层作为掩模,形成绝缘膜以覆盖第一顶部电极,暴露第一顶部电极的顶面,形成第二顶部电极膜以覆盖第一顶部 电极,图案化第二顶部电极膜以形成第二顶部电极,以及将第二顶部电极处理到底部电极膜 作为具有自我对准的面具。 版权所有(C)2009,JPO&INPIT
    • 10. 发明专利
    • Magnetoresistive random access memory and driving method therefor
    • 磁性随机访问存储器及其驱动方法
    • JP2005251336A
    • 2005-09-15
    • JP2004062788
    • 2004-03-05
    • Toshiba Corp株式会社東芝
    • IKEGAWA SUMIOIWATA YOSHIHISATSUCHIDA KENJI
    • G11C11/15G11C11/00
    • G11C11/16
    • PROBLEM TO BE SOLVED: To provide a magnetoresistive random access memory with which read errors are reduced as far as possible and a large reproduction signal can be obtained.
      SOLUTION: The driving method of a magnetoresistive random access memory having a memory cell which changes between binary resister values by the same write pulse comprises: a step for reading the resister value of the selected memory cell and making the read resister value a 1st resister value; a step for performing a 1st writing operation to the selected memory cell using a write pulse; a step for reading the resister value of the selected memory cell and making the read resister value a 2nd resister value; a step for comparing the 2nd resister value with the 1st resister value and deciding a data originally stored in the selected memory cell on the basis of the result of this comparison; and a step for performing 2nd write operation to the selected memory cell using the write pulse.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供尽可能减少读取误差的磁阻随机存取存储器,并且可以获得大的再现信号。 解决方案:具有通过相同写入脉冲在二进制寄存器值之间变化的存储单元的磁阻随机存取存储器的驱动方法包括:读取所选存储单元的寄存器值并使读取寄存器值为a 第一名 使用写入脉冲对选择的存储单元执行第一写入操作的步骤; 读取所选存储单元的寄存器值并使读取寄存器值为第二寄存器值的步骤; 将第二寄存器值与第一寄存器值进行比较的步骤,并且基于该比较的结果来决定原来存储在所选存储器单元中的数据; 以及使用写脉冲对选择的存储单元执行第二写操作的步骤。 版权所有(C)2005,JPO&NCIPI