Advanced writer for chip-on-load beam
AssigneeRead-Rite Corporation
InventorsBilly W. Crue, Jr., Zhupei Shi, Carlos Corona, Mark D. Thomas
Life of this patent
Estimating the term…
Abstract
A write element for recording data on a magnetic medium is provided having an impedance designed to substantially match the impedance of an electrical interconnection between it and a pre-amp chip located nearby on the load beam. Additional embodiments are directed to incorporating a read element with the write element to form a read/write head, and to further incorporate the read/write head into a magnetic disk drive. Further embodiments are directed towards the fabrication of the write element.
Claims16
A recording device for recording data on a magnetic medium, comprising:
- a first pole including a first pole tip portion;
- a second pole including a second pole tip portion aligned with said first pole tip portion;
- a backgap portion connecting said first pole to said second pole distal said first pole tip portion and said second pole tip portion;
- a first pole pedestal, including a top surface defining a plane, connected to said first pole tip portion, and aligned with said second pole tip portion, said first pole, said second pole, wherein said backgap portion, and said first pole pedestal form a yoke having a characteristic yoke length;
- a first pole insulation layer disposed above said first pole;
- a first coil layer including at least one first coil turn disposed above said first pole insulation layer, said first coil layer having a top surface substantially coplanar with said plane;
- a second coil layer disposed above said first coil layer and including at least one second coil turn;
- a write gap layer disposed between said first pole pedestal and said second pole tip portion and directly between said first coil layer and said second coil layer;
- and
- a coil insulation layer disposed above said write gap layer and covering said second coil layer, said second pole being disposed over said second coil insulation layer.
A data transfer device for exchanging data with a magnetic medium, comprising:
- a recording device including;
- a first pole including a first pole tip portion;
- a second pole including a second pole tip portion aligned with said first pole tip portion;
- a backgap portion connecting said first pole to said second pole distal said first pole tip portion and said second pole tip portion;
- a first pole pedestal, including a top surface defining a plane, connected to said first pole tip portion, and aligned with said second pole tip portion, wherein said first pole, said second pole, said backgap portion, and said first pole pedestal form a yoke having a characteristic yoke length;
- a first pole insulation layer disposed above said first pole;
- a first coil layer including at least one first coil turn disposed above said first pole insulation layer, said first coil layer having a top surface substantially coplanar with said plane;
- a second coil layer spaced above said first coil layer and including at least one second coil turn;
- a write gap layer disposed between said first pole pedestal and said second pole tip portion and directly between said first coil layer and said second coil layer;
- and
- a coil insulation layer disposed above said write gap layer and covering said second coil layer, said second pole being disposed over said second coil insulation layer;
- a load beam to which said recording device is affixed;
- and
- a pre-amp chip disposed on said load beam, electrically connected to said recording device, and configured to be electrically connected to a controller and to pass electrical signals to and from said controller and said recording device.
Dependencies are inferred from the claim text.