Patent ID: 11869543
Assignee: TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 8:
9. A disk device comprising:
a magnetic disk;
a magnetic head configured to read and write information from and to the magnetic disk;
a first flexible printed circuit board including a plurality of first terminals, on which the magnetic head is mounted and electrically connected to at least one of the plurality of first terminals;
a second flexible printed circuit board including
a surface,
a plurality of second terminals on the surface, individually bonded to the corresponding first terminals with a conductive bonding material, and
a first ground plane covering at least one of the plurality of second terminals in a direction orthogonal to the surface; and

a preamplifier mounted on the second flexible printed circuit board, configured to
output, to the magnetic head, an electric signal representing information to be written to the magnetic disk by the magnetic head, and
receive, from the magnetic head, an electric signal representing information read from the magnetic disk by the magnetic head,

wherein
the plurality of second terminals includes a first read terminal through which an electric signal representing information read from the magnetic disk by the magnetic head passes,
the first ground plane is located apart from at least a part of the first read terminal in a direction along the surface, and
the first ground plane is provided with a first opening between one of the plurality of second terminals and the preamplifier in the direction along the surface.