Patents Examined by Adam B Dravinikas
  • Patent number: 7768747
    Abstract: A thin-film magnetic head includes a lower magnetic shield layer, an MR multi-layered structure formed on the lower magnetic shield layer so that current flows in a direction perpendicular to surfaces of laminated layers, and an upper magnetic shield layer formed on the MR multi-layered structure. The lower magnetic shield layer consists of a first soft magnetic layer and a second soft magnetic layer laminated on and magnetically connected with the first soft magnetic layer. A part of an upper surface of the first soft magnetic layer outside both side ends in a track-width direction of the MR multi-layered structure is located lower in height than an upper surface within a region where the MR multi-layered structure is formed, of the lower magnetic shield layer. The second soft magnetic layer is formed outside both side ends in a track-width direction of the MR multi-layered structure.
    Type: Grant
    Filed: April 16, 2007
    Date of Patent: August 3, 2010
    Assignee: TDK Corporation
    Inventors: Takeo Kagami, Takayasu Kanaya