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32 条记录 (耗时 0.026 秒)

    Capacitance based tunable micromechanical resonators
    1.
    发明授权
    Capacitance based tunable micromechanical resonators 失效
    基于电容的可调谐微机械谐振器

    公开(公告)号：US5640133A

    公开(公告)日：1997-06-17

    申请号：US494024

    申请日：1995-06-23

    申请人： Noel C. MacDonald ,  Fred M. Bertsch ,  Kevin A. Shaw ,  Scott G. Adams

    发明人： Noel C. MacDonald ,  Fred M. Bertsch ,  Kevin A. Shaw ,  Scott G. Adams

    IPC分类号： H03H9/125 ,  H02N1/00 ,  H03H9/02 ,  H03H9/205 ,  H03H9/24 ,  H03H9/46

    CPC分类号： H03H9/02425 ,  H02N1/008 ,  H03H9/02417 ,  H03H9/46 ,  H03H2009/02496

    摘要： A tunable electromicromechanical resonator structure incorporates an electrostatic actuator which permits reduction or enhancement of the resonant frequency of the structure. The actuator consists of two sets of opposed electrode fingers, each set having a multiplicity of spaced, parallel fingers. One set is mounted on a movable portion of the resonator structure and one set is mounted on an adjacent fixed base on substrate, with the fingers in opposed relationship and their adjacent ends spaced apart by a gap. An adjustable bias voltage across the sets of electrodes adjusts the resonant frequency of the movable structure.

    摘要翻译： 可调电动机械谐振器结构包括静电致动器，其允许减小或增强结构的谐振频率。 致动器由两组相对的电极指组成，每组具有多个间隔开的平行指状物。 一组安装在谐振器结构的可移动部分上，一组安装在基板上的相邻的固定基座上，指状物处于相对关系，并且其相邻端部间隔开间隙。 两组电极之间的可调偏压调节可移动结构的谐振频率。

    Trench isolation for micromechanical devices
    2.
    发明授权
    Trench isolation for micromechanical devices 有权
    微机械装置的沟槽隔离

    公开(公告)号：US06239473B1

    公开(公告)日：2001-05-29

    申请号：US09231082

    申请日：1999-01-14

    申请人： Scott G. Adams ,  Kevin A. Shaw ,  Russell Y. Webb ,  Bryan W. Reed ,  Noel C. MacDonald ,  Timothy J. Davis

    发明人： Scott G. Adams ,  Kevin A. Shaw ,  Russell Y. Webb ,  Bryan W. Reed ,  Noel C. MacDonald ,  Timothy J. Davis

    IPC分类号： H01L2984

    CPC分类号： H01L21/76224 ,  B81B2203/0118 ,  B81B2203/033 ,  B81C1/00142 ,  B81C1/00698

    摘要： An isolation process which enhances the performance of silicon micromechanical devices incorporates dielectric isolation segments within the silicon microstructure, which is otherwise composed of an interconnected grid of cantilevered beams. A metal layer on top of the beams provides interconnects and also allows contact to the silicon beams, electrically activating the device for motion or transduction. Multiple conduction paths are incorporated through a metal patterning step prior to structure definition. The invention improves manufacturability of previous processes by performing all lithographic patterning steps on flat topographies, and removing complicated metal sputtering steps required of most high aspect ratio processes. With little modification, the invention can be implemented with integrated circuit fabrication sequences for fully integrated devices.

    摘要翻译： 提高硅微机械器件性能的隔离工艺在硅微结构内部包含介电隔离段，否则由微悬臂梁的互连网格组成。 在梁的顶部上的金属层提供互连并且还允许与硅束的接触，电激活装置以进行运动或转导。 在结构定义之前，通过金属图案化步骤并入多个导电路径。 本发明通过在平面形貌上进行所有平版印刷图案化步骤，以及去除大多数高纵横比工艺所需的复杂金属溅射步骤，从而提高先前工艺的可制造性。 通过很少的修改，本发明可以用于完全集成的器件的集成电路制造序列。

    Micromechanical accelerometer for automotive applications
    3.
    发明授权
    Micromechanical accelerometer for automotive applications 有权
    用于汽车应用的微机械加速度计

    公开(公告)号：US06170332B2

    公开(公告)日：2001-01-09

    申请号：US09552578

    申请日：2000-04-19

    申请人： Noel C. MacDonald ,  Kevin A. Shaw ,  Scott G. Adams

    发明人： Noel C. MacDonald ,  Kevin A. Shaw ,  Scott G. Adams

    IPC分类号： G01P1508

    CPC分类号： G01P15/131 ,  B81B2201/0235 ,  B81B2203/051 ,  B81C1/00619 ,  B81C2201/0132 ,  G01P1/006 ,  G01P15/0802 ,  G01P15/125 ,  G01P2015/0814 ,  G01P2015/0817

    摘要： A micromechanical capacitive accelerometer is provided from a single silicon wafer. The basic structure of the micromechanical accelerometer is etched in the wafer to form a released portion in the substrate, and the released and remaining portions of the substrate are coated with metal under conditions sufficient to form a micromechanical capacitive accelerometer. The substrate is preferably etched using reactive-ion etching for at least the first etch step in the process that forms the basic structure, although in another preferred embodiment, all etching is reactive-ion etching. The accelerometer also may comprise a signal-conditioned accelerometer wherein signal-conditioning circuitry is provided on the same wafer from which the accelerometer is formed, and VLSI electronics may be integrated on the same wafer from which the accelerometer is formed. The micromechanical capacitive accelerometer can be used for airbag deployment, active suspension control, active steering control, anti-lock braking, and other control systems requiring accelerometers having high sensitivity, extreme accuracy and resistance to out of plane forces.

    摘要翻译： 从单个硅晶片提供微机电电容式加速度计。 在晶片中蚀刻微机械加速度计的基本结构，以在衬底中形成释放部分，并且在足以形成微机械电容式加速度计的条件下，用金属涂覆衬底的释放和剩余部分。 在形成基本结构的工艺中，优选使用反应离子蚀刻对至少第一蚀刻步骤蚀刻衬底，尽管在另一优选实施例中，所有蚀刻都是反应离子蚀刻。 加速度计还可以包括信号调节加速度计，其中信号调节电路设置在与其形成加速度计的同一晶片上，并且VLSI电子器件可以集成在形成加速度计的相同晶片上。 微机电容加速度计可用于安全气囊部署，主动悬架控制，主动转向控制，防抱死制动以及需要具有高灵敏度，极高精度和抗平面外力的加速度计的其他控制系统。

    Microfabrication process for enclosed microstructures
    4.
    发明授权
    Microfabrication process for enclosed microstructures 失效
    封闭微结构的微加工工艺

    公开(公告)号：US6093330A

    公开(公告)日：2000-07-25

    申请号：US867060

    申请日：1997-06-02

    申请人： John M. Chong ,  Scott G. Adams ,  Noel C. MacDonald ,  Kevin A. Shaw

    发明人： John M. Chong ,  Scott G. Adams ,  Noel C. MacDonald ,  Kevin A. Shaw

    IPC分类号： B81B3/00 ,  H01L21/302

    CPC分类号： B81C1/0015 ,  B81C1/00047 ,  B81C1/00071 ,  B81B2203/0338 ,  B81C2201/053 ,  B81C2203/0136

    摘要： A single-mask process for fabricating enclosed, micron-scale subsurface cavities in a single crystal silicon substrate includes the steps of patterning the substrate to form vias, etching the cavities through the vias, and sealing the vias. Single cavities of any configuration may be produced, but a preferred embodiment includes closely spaced cavity pairs. The cavities may be separated by a thin membrane, or may be merged to form an enlarged merged cavity having an overhanging bar to which electrical leads may be connected. A three-mask process for fabricating enclosed cavities with electrical contacts and electrical connections is also disclosed.

    摘要翻译： 用于在单晶硅衬底中制造封闭的微米级次表面空穴的单掩模工艺包括以下步骤：使衬底图案化以形成通孔，通过通孔蚀刻空腔，并密封通孔。 可以制造任何构造的单个空腔，但是优选实施例包括紧密间隔的空腔对。 空腔可以由薄膜分离，或者可以被合并以形成具有可以连接电引线的悬伸杆的扩大的合并腔。 还公开了一种用于制造具有电触点和电连接的封闭腔的三掩模工艺。

    Trench isolation for micromechanical devices
    5.
    发明授权
    Trench isolation for micromechanical devices 有权
    微机械装置的沟槽隔离

    公开(公告)号：US06342430B1

    公开(公告)日：2002-01-29

    申请号：US09548680

    申请日：2000-04-13

    申请人： Scott G. Adams ,  Kevin A. Shaw ,  Russell Y. Webb ,  Bryan W. Reed ,  Noel C. MacDonald ,  Timothy J. Davis

    发明人： Scott G. Adams ,  Kevin A. Shaw ,  Russell Y. Webb ,  Bryan W. Reed ,  Noel C. MacDonald ,  Timothy J. Davis

    IPC分类号： H01L2176

    CPC分类号： H01L21/76224 ,  B81B2203/0118 ,  B81B2203/033 ,  B81C1/00142 ,  B81C1/00698

    摘要： An isolation process which enhances the performance of silicon micromechanical devices incorporates dielectric isolation segments within the silicon microstructure, which is otherwise composed of an interconnected grid of cantilevered beams. A metal layer on top of the beams provides interconnects and also allows contact to the silicon beams, electrically activating the device for motion or transduction. Multiple conduction paths are incorporated through a metal patterning step prior to structure definition. The invention improves manufacturability of previous processes by performing all lithographic patterning steps on flat topographies, and removing complicated metal sputtering steps required of most high aspect ratio processes. With little modification, the invention can be implemented with in grated circuit fabrication sequences for fully integrated devices.

    摘要翻译： 提高硅微机械器件性能的隔离工艺在硅微结构内部包含介电隔离段，否则由微悬臂梁的互连网格组成。 在梁的顶部上的金属层提供互连并且还允许与硅束的接触，电激活装置以进行运动或转导。 在结构定义之前，通过金属图案化步骤并入多个导电路径。 本发明通过在平面形貌上进行所有平版印刷图案化步骤，以及去除大多数高纵横比工艺所需的复杂金属溅射步骤，从而提高先前工艺的可制造性。 通过很少的修改，本发明可以用于完全集成的器件的格栅电路制造顺序。