Thin film magnetic head with thermal flying height control pads located at both ends of all pads series on slider side plane
View Patent ↗Embodiments of the invention prevent the write element lead wires from inducing crosstalk current in the read element lead wires. In one embodiment, a magnetic head slider comprises: a substrate portion; a heating resistor formed on the substrate portion through the intermediary of an insulation layer; a magnetic write element and a magnetic read element which are formed over the heating resistor through the intermediary of an insulation layer; and a terminal array structure provided with first terminals to wire the magnetic write element, second terminals to wire the magnetic read element, and third terminals to wire the heating resistor, wherein two of the third terminals for the heating resistor are located respectively on the opposite outer sides of the first and second terminals. In addition, an arm suspension is provided with a wiring structure in which wires connected to the terminals of the magnetic head slider, wires connected to the terminals, and wires connected to the terminals are guided to a predetermined direction and the magnetic write element lead wires are separated from the magnetic read element lead wires by the wires located in the central portion.
1. A magnetic head slider comprising:
a substrate portion;
a heating resistor formed of metal alloy on the substrate portion through the intermediary of an insulation layer;
a magnetic write element and a magnetic read element which are formed over the heating resistor through the intermediary of an insulation layer; and
a terminal array structure limited to a side proximal to the magnetic write element and opposite to the substrate portion with first terminals to wire the magnetic write element, second terminals to wire the magnetic read element, and third terminals to wire the heating resistor, wherein two of the third terminals for the heating resistor are located respectively on the opposite outer sides of the first and second terminals.
2. A magnetic head slider according to claim 1 , wherein the heating resistor is located between an underlayer insulation film formed on the substrate portion and an under shield formed on the underlayer insulation film.
3. A magnetic head slider according to claim 2 , wherein the material of the heating resistor and the material of the lead lines are selected so that the heating resistor has a larger resistance than the lead lines.
4. A wafer having a device structure for a thin film magnetic head slider according to claim 3 .
5. A magnetic head slider according to claim 3 wherein the heating resistor is made of NiCr or permalloy.
6. A wafer having a device structure for a thin film magnetic head slider according to claim 2 .
7. A magnetic head slider according to claim 2 wherein the heating resistor is made of NiCr or permalloy.
8. A wafer having a device structure for a thin film magnetic head slider according to claim 1 .
9. A magnetic head slider according to claim 1 wherein the heating resistor is made of NiCr or permalloy.
10. A magnetic head slider according to claim 1 , wherein the material of the heating resistor and the material of the lead lines are selected so that the heating resistor has a larger resistance than the lead lines.
11. A magnetic disk drive comprising a magnetic head slider according to claim 1 used to write and read data to and from a rotating magnetic disk.
12. A magnetic head support structure comprising:
a magnetic head slider having a substrate portion, a heating resistor formed of metal alloy on the substrate portion through the intermediary of an insulation layer, a magnetic write element and a magnetic read element which are formed over the heating resistor through the intermediary of an insulation layer, and a terminal array structure limited to a side proximal to the magnetic write element and opposite to the substrate portion with first terminals to wire the magnetic write element, second terminals to wire the magnetic read element and third terminals to wire the heating resistor, wherein the third terminals for the heating resistor are located respectively on the outer sides of the first and second terminals; and
an arm suspension provided with a wiring structure in which first wires connected to the first terminals of the magnetic head slider, second wires connected to the second terminals, and third wires connected to the third terminals are guided to a predetermined direction and the first wires are separated from the second wires by the third wires located in a central portion.
13. A magnetic disk drive where a magnetic head slider according to claim 12 is used to write and read data to and from a rotating magnetic disk.
14. A wafer having a device structure for a thin film magnetic head slider according to claim 12 .
15. A magnetic head slider according to claim 12 wherein the heating resistor is made of NiCr or permalloy.
16. A magnetic head support structure comprising:
a magnetic head slider having a substrate portion, a heating resistor formed of metal alloy on the substrate portion through the intermediary of an insulation layer, a magnetic write element and a magnetic read element which are formed over the heating resistor through the intermediary of an insulation layer, and a terminal array structure limited to a side proximal to the magnetic write element and opposite to the substrate portion with first terminals to wire the magnetic write element, second terminals to wire the magnetic read element, and third terminals to wire the heating resistor, wherein two of the third terminals for the heating resistor are located respectively on the opposite outer sides of the first and second terminals; and
an arm suspension provided with a wiring structure in which first wires connected to the first terminals of the magnetic head slider, second wires connected to the second terminals, and third wires connected to the third terminals are guided to a determined direction and the first wires are separated from the second wires by the third wires located in a central portion.
17. A magnetic disk drive comprising a magnetic head slider according to claim 16 used to write and read data to and from a rotating magnetic disk.
18. A wafer having a device structure for a thin film magnetic head slider according to claim 16 .
19. A magnetic head slider according to claim 16 wherein the heating resistor is made of NiCr or permalloy.