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    • 5. 发明申请
    • ACTUATOR AND STORAGE DEVICE
    • 执行器和存储设备
    • US20120230079A1
    • 2012-09-13
    • US13235652
    • 2011-09-19
    • Yongfang LiYasushi TomizawaHiroaki NakamuraAkihiro Koga
    • Yongfang LiYasushi TomizawaHiroaki NakamuraAkihiro Koga
    • G11C11/22H02N1/00
    • H02N1/008
    • In one embodiment, an actuator has a movable member, a frame, and first and second electrodes. Each of the first electrodes has a pair of first and second planes perpendicular to a third direction which is orthogonal to the first and the second directions approximately. The second electrodes are provided alternately with the first electrode respectively and with a distance from the first electrode. Each of the second electrodes has a pair of third and fourth planes perpendicular to the third direction. The first and the second planes have a deviation in the third direction with respect to the third and the fourth planes, respectively. The amount of the deviation is larger than a maximum value of the amount of displacement of the movable member in the third direction. The amount of displacement is produced by gravity when a component of the gravity in the third direction is maximum.
    • 在一个实施例中,致动器具有可动构件,框架以及第一和第二电极。 每个第一电极具有垂直于大致与第一和第二方向正交的第三方向的一对第一和第二平面。 第二电极分别与第一电极交替设置,并且距离第一电极一定距离。 每个第二电极具有垂直于第三方向的一对第三和第四平面。 第一和第二平面分别相对于第三和第四平面在第三方向上具有偏差。 偏差量大于可动件在第三方向上的位移量的最大值。 当第三方向的重力分量最大时,位移量由重力产生。
    • 7. 发明授权
    • Actuator
    • 执行器
    • US08873218B2
    • 2014-10-28
    • US13070250
    • 2011-03-23
    • Kei MasunishiTamio IkehashiYasushi TomizawaAkihiro Koga
    • Kei MasunishiTamio IkehashiYasushi TomizawaAkihiro Koga
    • H01G5/00H01G4/005H01H59/00H01G5/18
    • H01H59/0009H01G5/18
    • According to one embodiment, an actuator includes a substrate, a lower electrode disposed on the substrate, an upper electrode, a support and a driving unit. The upper electrode is opposed to the lower electrode. The support supports the upper electrode. The driving unit is connected between the lower electrode and the upper electrode and feeds a driving voltage. The driving voltage at which the lower and upper electrodes start to come into contact with each other is defined as a pull-in voltage. A capacitance between the lower and upper electrodes is defined as a pull-in capacitance. There exist a first region and a second region. In the second region, a change rate of a capacitance ratio changes more slowly than in the first region, when the absolute value of the potential difference is further increased. The driving unit feeds the driving voltage in the second region.
    • 根据一个实施例,致动器包括基板,设置在基板上的下电极,上电极,支架和驱动单元。 上电极与下电极相对。 支撑件支撑上电极。 驱动单元连接在下电极和上电极之间,并提供驱动电压。 下电极和上电极彼此接触的驱动电压被定义为引入电压。 下电极和上电极之间的电容被定义为引入电容。 存在第一区域和第二区域。 在第二区域中,当电位差的绝对值进一步增加时,电容比的变化率比第一区域变化更慢。 驱动单元在第二区域中馈送驱动电压。
    • 9. 发明授权
    • Storage device
    • 储存设备
    • US08509048B2
    • 2013-08-13
    • US13422882
    • 2012-03-16
    • Yasushi TomizawaAkihiro Koga
    • Yasushi TomizawaAkihiro Koga
    • G11B9/00
    • G11B9/1418G11B9/1454
    • A storage device includes a storage medium and a plurality of probes. The probes each have a recording/reproducing portion. The probes include a first probe, a second probe spaced from the first probe in a first direction, and a third probe spaced from the first probe in the first direction and in a second direction different from the first direction. A distance Xp1 in the first direction between the portions of the first and second probes, a distance Xp2 in the first direction between the portions of the first and third probes, and a distance Yp2 in the second direction between the portions of the first and third probes satisfy the following formulae: Xp1=n×Xm Xp1=Xm Yp2=Ym/n  [Math 1] (, provided that n=2, 3, 4, - - - ), where Xm and Ym are lengths of each area in the first and second directions, respectively.
    • 存储装置包括存储介质和多个探针。 探头各具有记录/重放部分。 所述探针包括第一探针,在第一方向上与所述第一探针间隔开的第二探针,以及在所述第一方向和与所述第一方向不同的第二方向上与所述第一探针间隔开的第三探针。 在第一和第二探针的部分之间的第一方向上的距离Xp1,第一和第三探针的部分之间的第一方向上的距离Xp2和在第一和第三探针的部分之间的第二方向上的距离Yp2 探针满足下列公式:Xp1 = n×Xm Xp1 = Xm Yp2 = Ym / n [数学式1](假设n = 2,3,4, - - ),其中Xm和Ym是每个区域的长度 分别是第一和第二方向。