Plural Diverse Layers Patents (Class 360/123.35)
  • Patent number: 7633710
    Abstract: A magnetic head including an induction coil having coil turns that are disposed between two magnetic poles of the magnetic head. The coil turns include a lower coil turn portion and an upper coil turn portion. In fabricating the induction coil, the lower coil turn portion is fabricated first, and the upper coil turn portion is fabricated directly upon the lower coil turn portion. The lower coil turn portion may be fabricated using damascene methods and the upper coil turn portion may be fabricated utilizing photolithographic methods. The lower coil turn portion and the upper coil turn portion of the induction coil turns are electrically connected, such that the thickness of the overall induction coil turns is increased. As a result, the electrical resistance of the coil turns is decreased, and heat generated in the coil is reduced.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: December 15, 2009
    Assignee: Hitachi Global Storage Technologies B.V.
    Inventors: Edward Hin Pong Lee, Vladimir Nikitin