Systems and methods for providing stacked writer leads for magnetic transducers
View Patent ↗Systems and methods for providing stacked writer leads for magnetic transducers used in disk drives are provided. One such system for providing stacked writer leads for a magnetic transducer includes a writer coil for the magnetic transducer, a first pad on the magnetic transducer, a second pad on the magnetic transducer, a first circuit trace coupled to the first pad and a first terminal of the writer coil, and a second circuit trace coupled to the second pad and a second terminal of the writer coil, where a preselected length of the first circuit trace and the second circuit trace is configured in a stacked configuration where each of the preselected lengths of the first circuit trace and the second circuit trace is positioned at about the same location in spaced apart planes.
1. A system for providing stacked writer leads for a magnetic transducer, the system comprising:
a writer coil for the magnetic transducer;
a first pad on the magnetic transducer;
a second pad on the magnetic transducer;
a first circuit trace coupled to the first pad and a first terminal of the writer coil; and
a second circuit trace coupled to the second pad and a second terminal of the writer coil,
wherein a preselected length of the first circuit trace and the second circuit trace is configured in a stacked configuration where each of the preselected lengths of the first circuit trace and the second circuit trace is positioned at about a same location in spaced apart planes.
2. The system of claim 1 , wherein, if the first circuit trace were projected onto the plane of the second circuit trace, the first circuit trace would occupy about the same location as the second circuit trace.
3. The system of claim 1 , wherein, if the first circuit trace were projected onto the plane of the second circuit trace, the first circuit trace would occupy the same location as the second circuit trace.
4. The system of claim 1 , wherein the preselected length is substantially greater than a width of either the first circuit trace or the second circuit trace.
5. The system of claim 1 , wherein the stacked configuration is configured to provide a preselected amount of capacitive coupling that corresponds to the preselected length, and wherein the preselected amount of capacitive coupling is selected to compensate for an inductance of the writer coil.
6. The system of claim 1 , wherein the first circuit trace and the second circuit trace are positioned on distinct layers that are spaced apart by a preselected distance that ranges from about 1 micrometer to about 4 micrometer.
7. The system of claim 1 , further comprising a flexure, wherein the first and second pads are coupled to traces on the flexure, and wherein the first and second pads are configured to receive a pair of differential signals.
8. The system of claim 1 , wherein the magnetic transducer is configured to write information on a magnetic medium of a storage drive.
9. The system of claim 1 , wherein the magnetic transducer comprises an outer layer, and wherein the first and second pads are positioned along the outer layer.
10. The system of claim 1 , wherein the first and second circuit traces comprise one or more conductive materials.
11. A method for providing stacked writer leads for a magnetic transducer, the method comprising:
forming a writer coil for the magnetic transducer;
forming a first circuit trace on a first layer, the first circuit trace coupled to a first terminal of the writer coil;
forming a second circuit trace on a second layer on top of, and spaced apart, from the first layer, the second circuit trace coupled to a second terminal of the writer coil; and
forming a first pad and a second pad on the magnetic transducer, the first pad coupled to the first circuit trace and the second pad coupled to the second circuit trace,
wherein a preselected length of the first circuit trace and the second circuit trace is configured in a stacked configuration where the preselected lengths of the first circuit trace and the second circuit trace are positioned at about a same location in the spaced apart layers.
12. The method of claim 11 , wherein the forming the writer coil for the magnetic transducer comprises forming the writer coil for the magnetic transducer on the first layer.
13. The method of claim 11 , wherein the forming the writer coil for the magnetic transducer comprises:
forming a first portion of the writer coil for the magnetic transducer on the first layer; and
forming a second portion of the writer coil for the magnetic transducer on the second layer.
14. The method of claim 11 , wherein, if the first circuit trace were projected onto the plane of the second circuit trace, the first circuit trace would occupy about the same location as the second circuit trace.
15. The method of claim 11 , wherein, if the first circuit trace were projected onto the plane of the second circuit trace, the first circuit trace would occupy the same location as the second circuit trace.
16. The method of claim 11 , wherein the preselected length is substantially greater than a width of either the first circuit trace or the second circuit trace.
17. The method of claim 11 , wherein the stacked configuration is configured to provide a preselected amount of capacitive coupling that corresponds to the preselected length, and wherein the preselected amount of capacitive coupling is selected to compensate for an inductance of the writer coil.
18. The method of claim 11 , wherein the first circuit trace and the second circuit trace are spaced apart by a preselected distance that ranges from about 1 micrometer to about 4 micrometer.
19. The method of claim 11 , wherein the first and second pads are coupled to traces on a flexure, and wherein the first and second pads are configured to receive a pair of differential signals.
20. The method of claim 11 , wherein the magnetic transducer is configured to write information on a magnetic medium of a storage drive.
21. The method of claim 11 , wherein the magnetic transducer comprises an outer layer, and wherein the first and second pads are positioned along the outer layer.
22. The method of claim 11 , wherein the first and second circuit traces comprise one or more conductive materials.
23. The method of claim 11 , wherein the writer coil is configured to generate a magnetic field to write information on a magnetic medium of a storage drive.
24. The method of claim 11 , wherein the writer coil is contained within the magnetic transducer.
25. The system of claim 1 , wherein the writer coil is configured to generate a magnetic field to write information on a magnetic medium of a storage drive.
26. The system of claim 1 , wherein the writer coil is contained within the magnetic transducer.