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    • 1. 发明授权
    • Gating voltage control system and method for electrostatically actuating a micro-electromechanical device
    • 门电压控制系统和静电驱动微机电装置的方法
    • US07473859B2
    • 2009-01-06
    • US11622483
    • 2007-01-12
    • Joshua Isaac WrightKanakasabapathi SubramanianWilliam James PremerlaniJohn Norton ParkChristopher KeimelLong QueKuna Venkat Satya Rama KishoreAbhijeet Dinkar SatheXuefeng WangEdward Keith Howell
    • Joshua Isaac WrightKanakasabapathi SubramanianWilliam James PremerlaniJohn Norton ParkChristopher KeimelLong QueKuna Venkat Satya Rama KishoreAbhijeet Dinkar SatheXuefeng WangEdward Keith Howell
    • H01H51/22
    • H01H59/0009H01H47/22Y10T307/937
    • A gating voltage control system and method are provided for electrostatically actuating a micro-electromechanical systems (MEMS) device, e.g., a MEMS switch. The device may comprise an electrostatically responsive actuator movable through a gap for actuating the device to a respective actuating condition corresponding to one of a first actuating condition (e.g., a closed switching condition) and a second actuating condition (e.g., an open switching condition). The gating voltage control system may comprise a drive circuit electrically coupled to a gate terminal of the device to apply a gating voltage. The gating voltage control system may further comprise a controller electrically coupled to the drive circuit to control the gating voltage applied to the gating terminal in accordance with a gating voltage control sequence. The gating voltage control sequence may comprise a first interval for ramping up the gating voltage to a voltage level for producing an electrostatic force sufficient to accelerate the actuator through a portion of the gap to be traversed by the actuator to reach a respective actuating condition. The gating voltage control sequence may further comprise a second interval for ramping down the gating voltage to a level sufficient to reduce the electrostatic force acting on the movable actuator. This allows reducing the amount of force at which the actuator engages a contact for establishing the first actuating condition, or avoiding an overshoot position of the actuator while reaching the second actuating condition.
    • 提供了门控电压控制系统和方法,用于静电致动微机电系统(MEMS)装置,例如MEMS开关。 该装置可以包括静电响应致动器,其可通过间隙移动,以将装置致动到对应于第一致动状态(例如,闭合开关状态)和第二致动状态(例如,开启状态)之一的相应致动状态, 。 门控电压控制系统可以包括电耦合到该器件的栅极端子以施加选通电压的驱动电路。 门控电压控制系统还可以包括电耦合到驱动电路的控制器,以根据门控电压控制顺序控制施加到门控端子的门控电压。 门控电压控制序列可以包括用于将门控电压升高到电压电平的第一间隔,用于产生足以通过由致动器穿过的间隙的一部分来加速致动器以达到相应的致动状态的静电力。 门控电压控制序列还可以包括用于将门控电压降低到足以减小作用在可移动致动器上的静电力的水平的第二间隔。 这允许减小致动器接合接触件以建立第一致动条件的力的量,或者避免致动器在达到第二致动状态时的过冲位置。
    • 2. 发明申请
    • Gating Voltage Control System And Method For Electrostatically Actuating A Micro-Electromechanical Device
    • 静电驱动微机电装置门控电压控制系统及方法
    • US20080169707A1
    • 2008-07-17
    • US11622483
    • 2007-01-12
    • Joshua Isaac WrightKanakasabapathi SubramanianWilliam James PremerlaniJohn Norton ParkChristopher KeimelLong QueKuna Venkat Satya Rama KishoreAbhijeet Dinkar SatheXuefeng WangEdward Keith Howell
    • Joshua Isaac WrightKanakasabapathi SubramanianWilliam James PremerlaniJohn Norton ParkChristopher KeimelLong QueKuna Venkat Satya Rama KishoreAbhijeet Dinkar SatheXuefeng WangEdward Keith Howell
    • H01H9/54
    • H01H59/0009H01H47/22Y10T307/937
    • A gating voltage control system and method are provided for electrostatically actuating a micro-electromechanical systems (MEMS) device, e.g., a MEMS switch. The device may comprise an electrostatically responsive actuator movable through a gap for actuating the device to a respective actuating condition corresponding to one of a first actuating condition (e.g., a closed switching condition) and a second actuating condition (e.g., an open switching condition). The gating voltage control system may comprise a drive circuit electrically coupled to a gate terminal of the device to apply a gating voltage. The gating voltage control system may further comprise a controller electrically coupled to the drive circuit to control the gating voltage applied to the gating terminal in accordance with a gating voltage control sequence. The gating voltage control sequence may comprise a first interval for ramping up the gating voltage to a voltage level for producing an electrostatic force sufficient to accelerate the actuator through a portion of the gap to be traversed by the actuator to reach a respective actuating condition. The gating voltage control sequence may further comprise a second interval for ramping down the gating voltage to a level sufficient to reduce the electrostatic force acting on the movable actuator. This allows reducing the amount of force at which the actuator engages a contact for establishing the first actuating condition, or avoiding an overshoot position of the actuator while reaching the second actuating condition.
    • 提供了门控电压控制系统和方法,用于静电致动微机电系统(MEMS)装置,例如MEMS开关。 该装置可以包括静电响应致动器,其可通过间隙移动,以将装置致动到对应于第一致动状态(例如,闭合开关状态)和第二致动状态(例如,开启状态)之一的相应致动状态, 。 门控电压控制系统可以包括电耦合到该器件的栅极端子以施加选通电压的驱动电路。 门控电压控制系统还可以包括电耦合到驱动电路的控制器,以根据门控电压控制顺序控制施加到门控端子的门控电压。 门控电压控制序列可以包括用于将门控电压升高到电压电平的第一间隔,用于产生足以通过由致动器穿过的间隙的一部分来加速致动器以达到相应的致动状态的静电力。 门控电压控制序列还可以包括用于将门控电压降低到足以减小作用在可移动致动器上的静电力的水平的第二间隔。 这允许减小致动器接合接触件以建立第一致动条件的力的量,或者避免致动器在达到第二致动状态时的过冲位置。
    • 10. 发明授权
    • Latching mechanism for MEMS actuator and method of fabrication
    • MEMS致动器的锁定机构及其制造方法
    • US06549107B2
    • 2003-04-15
    • US09793307
    • 2001-02-26
    • Martin LimRobert FanLong Que
    • Martin LimRobert FanLong Que
    • H01H5122
    • H01H1/0036G02B26/0866H01H61/0107H01H2001/0042H01H2061/006
    • A latching mechanism for a MEMS actuator as, for example, a mirror in an N×N fiber optic switch, maintains a thermally actuated mirror in its actuated position even in the event of a power interruption by a pair of clamps, which clamp against an actuator arm. Such actuator arm is thermally actuated by a bent beam type of thermal actuator. To provide for effective fabrication using the MEMS technique (microelectromechanical system), on for example, a silicon substrate where the entire moveable structure is a suspended mechanism, the clamps are fabricated in a normally closed position. In this position they typically interfere with the line of motion of an enlarged portion of an actuator arm being directly in the line of motion or with a post and slot technique.
    • 用于MEMS致动器的闩锁机构,例如NxN光纤开关中的反射镜,即使在通过一对夹持器的电力中断的情况下,也将热致动反射镜保持在其致动位置,夹钳紧贴致动器臂 。 这种致动器臂由弯曲梁式的热致动器热致动。 为了提供使用MEMS技术(微机电系统)的有效制造,例如,整个可移动结构是悬挂机构的硅衬底,夹具被制造在常闭位置。 在这个位置上,它们通常干扰直接位于运动线中的致动器臂的放大部分的运动线,或者通过柱和槽技术。