Patent ID: 6424500
Filing Date: 2002-07-23
Classification: G11B

Abstract:
A flexure for use with a metal load beam in a disk drive suspension having selected and different impedance values for its read trace conductor circuit and its write trace conductor circuit, said flexure comprising plural sets of trace conductors, and a plastic insulative film layer spacing said trace conductors from said metal load beam in capacitance determining relation, said film layer having transversely to its longitudinal axis a differential thickness ranging from a lesser thickness in a first lateral portion adjacent its one edge margin to a greater thickness in a second lateral portion adjacent its other edge margin, said plural sets of trace conductors including a first set of trace conductors defining a read circuit and attached to said film first lateral portion at a spacing to be relatively closer to said metal load beam across said film layer and a second set of trace conductors defining a write circuit and attached to said film layer second lateral portion at a spacing to be relatively farther from said metal load beam across said film layer, whereby there is a capacitance differential between the read and write circuits, said capacitance differential providing selected and different impedance values for the circuits.