Suspension with biaxially shielded conductor trace array
AssigneeQuantum Corporation
InventorsWilliam R. Akin, Jr., Arun Balakrishnan, Stephen P. Williams, Christopher M. Carpenter
Life of this patent
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Abstract
A head suspension has an integrated multi-layer trace conductor array for supporting and electrically interconnecting a read/write head to electronic circuitry in a disk drive. The trace conductor array includes an integrally formed electrical shield which may be grounded or ungrounded and formed to have a depth greater than a skin effect depth at a frequency of an interfering wave front.
Claims14
An integrated load beam assembly including a load beam for supporting a read/write head/slider assembly adjacent to a storage medium and for electrically interconnecting the head to read/write circuitry, the load beam assembly comprising:
- a generally planar conductive member, disposed on the load beam, extending to proximity of the read/write head/slider assembly;
- a first electrical insulation layer formed on the conductive member;
- a first electrical signal trace path formed on the first electrical insulation layer;
- a second electrical insulation layer formed on the first electrical trace path;
- a conductive shield layer formed on the second electrical insulation layer for shielding the first electrical signal path from electrical interference;
- and
- a longitudinal window defined by the conductive member directly beneath the first electrical signal trace path, the longitudinal window having a width selected to control electrical impedance of the assembly.
An integrated load beam assembly for supporting a read/write head/slider assembly adjacent to a storage medium and for electrically interconnecting the head to a read/write circuitry, the load beam assembly comprising:
- a generally planar formed load beam supporting the read/write head/slider assembly at a distal end;
- a generally planar conductive member disposed on the load beam and extending to proximity of the read/write head/slider assembly;
- a first electrical insulation layer disposed on the conductive member;
- at least one electrical trace path disposed on the first electrical insulation layer;
- a shield connected to the generally planar conductive member and disposed in overlying and surrounding relation, and spaced away from, the at least one electrical trace path;
- and
- a longitudinal window defined by the conductive member directly beneath the first electrical signal trace path, the longitudinal window having a width selected to control electrical impedance of the assembly.
An integrated flexure/conductor structure for supporting a read/write head/slider assembly on a load beam adjacent to a storage medium and for electrically interconnecting the head to read/write circuitry, the flexure/conductor structure comprising:
- a generally planar conductive flexure member having a gimbal for supporting the read/write head/slider assembly;
- a first electrical insulation layer disposed on the flexure member;
- first and second electrical trace paths disposed on the first electrical insulation layer,
- a second electrical insulation layer disposed on the first and second electrical trace paths;
- an electrical shield disposed on the second electrical insulation layer for shielding the first and second electrical trace paths;
- and
- a longitudinal window defined by the conductive member directly beneath the first and second electrical signal trace paths, the longitudinal window having a width selected to control electrical impedance of the assembly,
- wherein the integrated flexure/conductor structure is disposed on the load beam thereby providing a low-profile suspension assembly.
Dependencies are inferred from the claim text.