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

Claim 9:
10. 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; and
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,

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,
the second flexible printed circuit board includes a base layer, and a conductive layer laminated on the base layer, and
the conductive layer includes
the plurality of second terminals, and
a second ground plane located apart from the plurality of second terminals in the direction along the surface, and

at least a part of the second ground plane is located between two of the plurality of second terminals in the direction along the surface.