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    • 1. 发明授权
    • Single-chip referenced full-bridge magnetic field sensor
    • 单芯片参考全桥磁场传感器
    • US08933523B2
    • 2015-01-13
    • US14112928
    • 2012-04-06
    • James G. DeakInsik JinWeifeng ShenSongsheng XueXiaofeng Lei
    • James G. DeakInsik JinWeifeng ShenSongsheng XueXiaofeng Lei
    • H01L27/22H01L43/02G01R33/09
    • H01L43/02G01R33/098
    • The present invention discloses a single-chip referenced full-bridge magnetoresistive magnetic-field sensor. The single-chip sensor is a Wheatstone bridge arrangement of magnetoresistive sensing elements and reference elements. The sensing elements and reference elements are formed from either magnetic tunnel junctions or giant magnetoresistive materials. The sensitivity of the reference and sensor elements is controlled through one or a combination of magnetic bias, exchange bias, shielding, or shape anisotropy. Moreover, the bridge output is tuned by setting the ratio of the reference and sensor arm resistance values to a predetermined ratio that optimizes the bridge output for offset and symmetry. The single-chip referenced-bridge magnetic field sensor of the present invention exhibits excellent temperature stability, low offset voltage, and excellent voltage symmetry.
    • 本发明公开了一种单芯片参考全桥磁阻磁场传感器。 单芯片传感器是一种惠斯通电桥布置的磁阻感应元件和参考元件。 感测元件和参考元件由磁隧道结或巨磁阻材料形成。 通过磁偏置,交换偏压,屏蔽或形状各向异性的一种或组合来控制参考和传感器元件的灵敏度。 此外,通过将参考和传感器臂电阻值的比率设置为优化桥接输出的偏移和对称性的预定比率来调节桥输出。 本发明的单芯片参考桥磁场传感器表现出优异的温度稳定性,低失调电压和优异的电压对称性。
    • 4. 发明申请
    • Isolated Voltage Transducer
    • 隔离式电压传感器
    • US20130271125A1
    • 2013-10-17
    • US13882111
    • 2011-10-26
    • James G. DeakInsik JinXiaofeng LeiWeifeng ShenSongsheng Xue
    • James G. DeakInsik JinXiaofeng LeiWeifeng ShenSongsheng Xue
    • G01R33/09
    • G01R33/09G01R15/148G01R15/205G01R31/025G01R33/0017G01R33/091G01R33/098
    • A transducer is disclosed for detecting the AC and DC voltage difference between two nodes in an electrical circuit and electronically transmitting the measured voltage difference to an electrical system that is electrically isolated from the common mode potential of the two nodes. The voltage drop between two points in a circuit under test is determined by detecting the current flowing through a resistive shunt coil connected in parallel to the test points. Current through the resistive shunt coil is linearly proportional to the voltage difference between the test points, and it is detected by using a magnetic sensor that is separated from the shunt coil by an insulating dielectric barrier. The transducer can be packaged in a standard integrated circuit package in order to provide a small and low cost voltage transducer for test, measurement, control, and signal-isolation applications.
    • 公开了一种用于检测电路中的两个节点之间的AC和DC电压差的换能器,并将所测量的电压差电传送到与两个节点的共模电位电隔离的电气系统。 通过检测流过与测试点并联连接的电阻分流线圈的电流来确定被测电路中两点之间的电压降。 通过电阻分流线圈的电流与测试点之间的电压差成线性比例,并且通过使用通过绝缘电介质阻挡层与分流线圈分离的磁传感器来检测电流。 传感器可以封装在标准集成电路封装中,以便为测试,测量,控制和信号隔离应用提供一个小型和低成本的电压传感器。
    • 5. 发明授权
    • Single line MRAM
    • 单线MRAM
    • US08519495B2
    • 2013-08-27
    • US12372025
    • 2009-02-17
    • Insik JinHongyue LiuYong LuXiaobin Wang
    • Insik JinHongyue LiuYong LuXiaobin Wang
    • H01L29/82
    • H01L43/08G11C11/1673G11C11/1675H01L27/228
    • A magnetic memory device includes a first electrode separated from a second electrode by a magnetic tunnel junction. The first electrode provides a write current path along a length of the first electrode. The magnetic tunnel junction includes a free magnetic layer having a magnetization orientation that is switchable between a high resistance state magnetization orientation and a low resistance state magnetization orientation. The free magnetic layer is spaced from the first electrode a distance of less than 10 nanometers. A current passing along the write current path generates a magnetic field. The magnetic field switches the free magnetic layer magnetization orientation between a high resistance state magnetization orientation and a low resistance state magnetization orientation.
    • 磁存储器件包括通过磁性隧道结从第二电极分离的第一电极。 第一电极沿着第一电极的长度提供写入电流路径。 磁性隧道结包括具有可在高电阻状态磁化取向和低电阻状态磁化取向之间切换的磁化取向的自由磁性层。 自由磁性层与第一电极间隔小于10纳米的距离。 沿着写入电流路径的电流产生磁场。 磁场在高电阻状态磁化取向和低电阻状态磁化取向之间切换自由磁层磁化取向。