The wires 60 include a plurality (two pieces) of ground wires 60C formed at spaced intervals to each other in the widthwise direction in the gimbal portion-insulating layer 32 corresponding to the gimbal portion 14.
The ground wires 60C are provided so as to ground the front piezoelectric-side terminals 59B. To be specific, as shown in
The conductor layer 10 is, for example, formed of a conductive material such as copper, nickel, gold, solder, or an alloy thereof. Preferably, the conductor layer 10 is formed of copper.
The thickness of the conductor layer 10 with respect to 100% of the thickness of the base insulating layer 9 (the total sum of the thickness of the first base insulating layer 26 and that of the second base insulating layer 27) is, for example, 10% or more, or preferably 30% or more and, for example, 200% or less, or preferably 100% or less. To be specific, the conductor layer 10 has a thickness of, for example, 3 μm or more, or preferably 5 μm or more and, for example, 50 μm or less, or preferably 20 μm or less.