Read/write head coil tap having upper and lower portions
OwnerKyusik Sin, Yingjian Cheninventors
Life of this patent
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Abstract
A thin film read/write head with a high performance inductive write section that incorporates a single layer coil with an improved fabrication method of a center tab of the single layer coil. The center tab is formed before the main body of the single layer coil is formed. Several advantages can thus be achieved. The coil resistance and inductance can be monitored for all the devices immediately after the coil fabrication to improve yield by identifying additional processing or rework before final production. Several conventional wafer processing steps can be eliminated, thereby shortening the cycle time of wafer processing. The chance of corrosion or delamination of the second pole P2 is significantly reduced.
Claims10
A thin film head with a write section and a read section, for use in a data storage device, comprising:
- a first pole P1 disposed in proximity to the read section;
- a second pole P2 disposed on an opposite side of the read section, relative to the first pole P1;
- a write gap formed between the first pole P1 and the second pole P2;
- a coil formed of a single layer of conductors, an insulating layer that covers the conductors, a back gap region, and a center tab;
- wherein the center tab is electrically conductive and comprises a lower portion and an upper portion:
- wherein the upper portion of the center tab is formed atop the lower portion;
- wherein the lower portion of the center tab is formed, at least in part, within the first pole P1;
- wherein the lower portion comprises a lead via;
- and
- wherein the upper portion of the center tab is formed as part of the single layer of conductors.
A thin film head with a write section section and a read section, for use in a data storage device, made by a method comprising:
- forming a first pole P1 in proximity to the read section;
- forming a second pole P2 on an opposite side of the read section, relative to the first pole P1;
- forming a backgap region;
- forming a center tab via;
- forming a center tab by depositing conductive material inside the center tab via;
- and
- then forming a coil in electrical connection with the center tab;
- wherein the center tab is electrically conductive and comprises a lower portion and an upper portion:
- wherein the upper portion of the center tab is formed atop the lower portion;
- wherein the lower portion of the center tab is formed, at least in part, within the first pole P1;
- wherein the lower portion comprises a lead via;
- and
- wherein the upper portion of the center tab is formed as part of the coil.
Dependencies are inferred from the claim text.