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    • 2. 发明授权
    • Methods of forming magnetic memory cells
    • 形成磁记忆单元的方法
    • US09373775B2
    • 2016-06-21
    • US13614212
    • 2012-09-13
    • Gurtej S. SandhuWitold KulaWayne I. Kinney
    • Gurtej S. SandhuWitold KulaWayne I. Kinney
    • H01L27/20H01L43/08H01L43/12H01L27/22
    • H01L43/02H01L27/222H01L27/224H01L27/226H01L43/08H01L43/10H01L43/12
    • Methods of forming memory cells, magnetic memory cell structures, and arrays of magnetic memory cell structures are disclosed. Embodiments of the methods include patterning a precursor structure to form a stepped structure including at least an upper discrete feature section and a lower feature section with a broader width, length, or both than the upper discrete feature section. The method uses patterning acts directed along a first axis, e.g., an x-axis, and then along a second axis, e.g., a y-axis, that is perpendicular to or about perpendicular to the first axis. The patterning acts may therefore allow for more unifoimity between a plurality of formed, neighboring cell core structures, even at dimensions below about thirty nanometers. Magnetic memory structures and memory cell arrays are also disclosed.
    • 公开了形成存储单元,磁存储单元结构和磁存储单元结构阵列的方法。 方法的实施例包括图案化前体结构以形成包括至少上部离散特征部分和具有更宽的宽度,长度或两者比较高离散特征部分的下部特征部分的阶梯式结构。 该方法使用沿着第一轴线例如x轴,然后沿着垂直于第一轴线或垂直于第一轴线的第二轴线,例如y轴定向的图案化动作。 因此,即使在低于约三十纳米的尺寸下,图案化动作也可允许在多个形成的相邻电池芯结构之间的更大的均匀性。 还公开了磁存储器结构和存储单元阵列。
    • 3. 发明授权
    • Memory cells, semiconductor device structures, memory systems, and methods of fabrication
    • 存储单元,半导体器件结构,存储器系统和制造方法
    • US08923038B2
    • 2014-12-30
    • US13527173
    • 2012-06-19
    • Witold KulaGurtej S. SandhuStephen J. Kramer
    • Witold KulaGurtej S. SandhuStephen J. Kramer
    • G11C11/15G11C11/00H01L29/82
    • H01L43/08G11C11/161H01L27/228H01L43/02H01L43/12
    • Methods of forming magnetic memory cells are disclosed. Magnetic and non-magnetic materials are formed into a primal precursor structure in an initial stress state of essentially no strain, compressive strain, or tensile strain. A stress-compensating material, e.g., a non-sacrificial, conductive material, is formed to be disposed on the primal precursor structure to form a stress-compensated precursor structure in a net beneficial stress state. Thereafter, the stress-compensated precursor structure may be patterned to form a cell core of a memory cell. The net beneficial stress state of the stress-compensated precursor structure lends to formation of one or more magnetic regions, in the cell core, exhibiting a vertical magnetic orientation without deteriorating a magnetic strength of the one or more magnetic regions. Also disclosed are memory cells, memory cell structures, semiconductor device structures, and spin torque transfer magnetic random access memory (STT-MRAM) systems.
    • 公开了形成磁存储器单元的方法。 磁性和非磁性材料在基本上没有应变,压缩应变或拉伸应变的初始应力状态下形成原始前体结构。 形成应力补偿材料,例如非牺牲导电材料,以设置在原始前体结构上以在净有益应力状态下形成应力补偿前体结构。 此后,应力补偿前体结构可以被图案化以形成存储单元的单元芯。 应力补偿前体结构的净有益应力状态有助于在电池芯中形成一个或多个磁性区域,呈现垂直磁性取向而不会使一个或多个磁性区域的磁强度恶化。 还公开了存储器单元,存储单元结构,半导体器件结构和自旋转矩传递磁随机存取存储器(STT-MRAM)系统。
    • 4. 发明申请
    • MEMORY CELLS, SEMICONDUCTOR DEVICE STRUCTURES, MEMORY SYSTEMS, AND METHODS OF FABRICATION
    • 存储器单元,半导体器件结构,存储器系统和制造方法
    • US20130334630A1
    • 2013-12-19
    • US13527173
    • 2012-06-19
    • Witold KulaGurtej S. SandhuStephen J. Kramer
    • Witold KulaGurtej S. SandhuStephen J. Kramer
    • H01L29/82H01L21/8246
    • H01L43/08G11C11/161H01L27/228H01L43/02H01L43/12
    • Methods of forming magnetic memory cells are disclosed. Magnetic and non-magnetic materials are formed into a primal precursor structure in an initial stress state of essentially no strain, compressive strain, or tensile strain. A stress-compensating material, e.g., a non-sacrificial, conductive material, is formed to be disposed on the primal precursor structure to form a stress-compensated precursor structure in a net beneficial stress state. Thereafter, the stress-compensated precursor structure may be patterned to form a cell core of a memory cell. The net beneficial stress state of the stress-compensated precursor structure lends to formation of one or more magnetic regions, in the cell core, exhibiting a vertical magnetic orientation without deteriorating a magnetic strength of the one or more magnetic regions. Also disclosed are memory cells, memory cell structures, semiconductor device structures, and spin torque transfer magnetic random access memory (STT-MRAM) systems.
    • 公开了形成磁存储器单元的方法。 磁性和非磁性材料在基本上没有应变,压缩应变或拉伸应变的初始应力状态下形成原始前体结构。 形成应力补偿材料,例如非牺牲导电材料,以设置在原始前体结构上以在净有益应力状态下形成应力补偿前体结构。 此后,应力补偿前体结构可以被图案化以形成存储单元的单元芯。 应力补偿前体结构的净有益应力状态有助于在电池芯中形成一个或多个磁性区域,呈现垂直磁性取向而不会使一个或多个磁性区域的磁强度恶化。 还公开了存储器单元,存储单元结构,半导体器件结构和自旋转矩传递磁随机存取存储器(STT-MRAM)系统。