Disk device with multi-layer flexible printed wiring board mounted to actuator block
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorsNorio Yoshikawa, Yoshihiro Amemiya
Life of this patent
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Abstract
According to one embodiment, a flexible printed wiring board includes a base insulation layer, first wirings W1 on the base insulation layer, an intermediate insulation layer overlapped with the first wirings, connection pads on the intermediate insulation layer, a cover insulation layer overlapped with the connection pads and the intermediate insulation layer and including openings through which the connection pads are exposed to the cover layer, and conductive vias MT electrically connecting the first wirings to at least a part of the connection pads respectively. The conductive vias are overlapped with the connection pads in a thickness direction of the flexible printed wiring board.
Claims17
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A disk device comprising:
- a disk-shaped recording medium including a recording layer;
- a magnetic head configured to process information on the recording medium;
- and
- an actuator assembly supporting the magnetic head to be movable relative to the recording medium,
- wherein the actuator assembly comprises a rotatable actuator block, a plurality of suspension assemblies extending from the actuator block and supporting the magnetic head, and a flexible printed wiring board mounted on the actuator block;
- the flexible printed wiring board comprises:
- a base insulation layer;
- a plurality of first wirings on the base insulation layer;
- an intermediate insulation layer overlapped with the first wirings and the base insulation layer;
- a plurality of connection pads on the intermediate insulation layer;
- a cover insulation layer overlapped with the connection pads and the intermediate insulation layer and including a plurality of openings through which the connection pads are exposed to the cover insulation layer;
- and
- conductive vias electrically connecting the first wirings to at least a part of the connection pads respectively, the conductive vias being arranged to overlap with the connection pads in a thickness direction of the flexible printed wiring board.
Dependencies are inferred from the claim text.