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    • 13. 发明授权
    • Air bearing for MEMS based motor
    • 基于MEMS的电机的空气轴承
    • US07088019B2
    • 2006-08-08
    • US10730472
    • 2003-12-08
    • Akio TakadaChing Biing YeoCheow Tong ChengShun Kayama
    • Akio TakadaChing Biing YeoCheow Tong ChengShun Kayama
    • H02K7/08
    • H02K21/24B81B5/00B81B2201/0242B81B2201/038F16C17/045F16C17/10F16C33/107H02K7/088
    • A MEMS (micro-electromechanical system) device having a rotor 44, a stator 43 and a shaft 27 connected to the stator 43 and around which the rotor 44 rotates. Grooves 47 are formed in a portion of the rotor 44, such that when the rotor 44 rotates an air bearing is formed for supporting the rotor 44 and maintaining its distance from the shaft 27 and stator 43. The rotor 44 is formed from joining two substrates 13, 23. One of the substrates 13 includes a surface having openings 7 including frustoconical walls, and one of the substrates 23 includes a surface having openings 15 including walls perpendicular to the surface of the substrate. The openings in the two substrates are in register with each other so that pairs of the openings form chambers 24. Each chamber 24 is provided with a shaft 27, which is positioned with a wide section of the shaft trapped in the chamber 24. The wide section of the shaft has a frustoconical surface facing the frustoconical walls of the chamber 24.
    • 具有转子44,定子43和连接到定子43并且转子44旋转的轴27的MEMS(微机电系统)装置。 凹槽47形成在转子44的一部分中,使得当转子44旋转时,形成用于支撑转子44并保持其与轴27和定子43的距离的空气轴承。 转子44通过连接两个基板13,23而形成。 基板13中的一个包括具有包括截头圆锥形壁的开口7的表面,并且其中一个基板23包括具有开口15的表面,该表面具有垂直于基板表面的壁。 两个基板中的开口彼此对准,使得成对的开口形成室24。 每个室24设置有轴27,轴27被定位成具有被捕获在室24中的轴的宽部分。 轴的宽部分具有面向腔室24的截头圆锥形壁的截头圆锥体表面。
    • 19. 发明授权
    • Magneto-resistive effect magnetic head
    • 磁阻效应磁头
    • US6120920A
    • 2000-09-19
    • US196562
    • 1998-11-20
    • Akio TakadaMoriaki AbeTadayuki HondaHiroaki NarisawaTakuji Shibata
    • Akio TakadaMoriaki AbeTadayuki HondaHiroaki NarisawaTakuji Shibata
    • G11B5/39B32B9/00
    • B82Y25/00B82Y10/00G11B5/3903G11B2005/3996Y10S428/90Y10T428/1121
    • A magneto-resistive effect type magnetic head employing a spin valve film in which the direction of magnetization of a free layer is constant even in the absence of an external magnetic field to assure magnetic stability. The magneto-resistive effect type magnetic head includes a magneto-resistive effect film of a planar substantially rectangular configuration, having its longitudinal direction substantially perpendicular to a magnetic recording medium sliding surface, a first electrode connected to a longitudinal end of the magneto-resistive effect film, a second electrode connected to the other longitudinal end of the magneto-resistive effect film and hard magnetic films arranged on both ends along the width of the magneto-resistive effect film. The magneto-resistive effect film is made up of at least a first ferromagnetic layer, a non-magnetic layer, a second ferromagnetic layer and an anti-ferromagnetic layer, layered together. The hard magnetic films has an electrical resistance larger than that of the magneto-resistive effect film.
    • 使用自旋阀膜的磁阻效应型磁头,其中自由层的磁化方向即使在没有外部磁场的情况下也是恒定的,以确保磁稳定性。 磁阻效应型磁头包括平面大致矩形构造的磁阻效应膜,其纵向基本上垂直于磁记录介质滑动表面,第一电极连接到磁阻效应的纵向端 薄膜,连接到磁阻效应膜的另一纵向端的第二电极和沿着磁阻效应膜的宽度布置在两端的硬磁膜。 磁阻效应膜由至少第一铁磁层,非磁性层,第二铁磁层和反铁磁层构成,层叠在一起。 硬磁膜的电阻​​大于磁阻效应膜的电阻。