Wiring structure for device arranged on head suspension operating on low-frequency signals and performing other than a write/read function

A wiring structure for a head suspension, the head suspension comprising:

• a head to write and read information to and from a recording medium,
• a load beam to apply load onto the head,
• a device arranged on the head and operating on low-frequency signals to achieve a function other than the information write/read function at the head, and
• a flexure attached to the load beam and supporting the head, the flexure including a base material made of a conductive thin plate and a base insulating layer formed on the base material;
• wherein the device includes a heater and a sensor that are arranged on the head, the heater thermally expanding and displacing a medium-confronting face of the head relative to the recording medium, the sensor detecting if the medium-confronting face hits the recording medium, and
• the wiring structure comprising:
• a write wiring and a read wiring formed on the base insulating layer and connected to the head;
• a device wiring formed on the base insulating layer and connected to the device;
• and
• an intermediate insulating layer on the base insulating layer;
• and
• wherein the device wiring is formed wider than the read wiring and includes positive/negative wires that are laid one on another with the intermediate insulating layer interposed between the positive/negative wires;
• wherein the device wiring includes heater wiring for the heater and sensor wiring for the sensor, at least the sensor wiring being formed wider than the read wiring, the sensor wiring having positive/negative wires that are laid one on another with the intermediate insulating layer interposed between the positive/negative wires, and
• wherein the heater wiring and the read wiring are arranged between the sensor wiring and the write wiring in a width direction of the flexure.