Patent ID: 8218267
Filing Date: 2012-07-10
Classification: G11B,H05K,Y10T

Abstract:
1. A flexure comprising: a substrate having a thin conductive metal plate, a base insulating layer comprised of flexible resin formed on the substrate, wiring patterns formed on the base insulating layer and connected to slider pads of a slider mount toward a first end of the flexure, a cover insulating layer formed to cover the wiring patterns, and a layer of conductive polymer, formed by applying conductive polymer solution, over the cover insulating layer, substrate, and wiring patterns, wherein thickness of the conductive polymer layer is sufficient to suppress electrostatic charge and ion migration on portions of the flexure covered by the conductive polymer layer, said conductive polymer layer thickness determined according to a relationship between the properties of the conductive polymer and thickness of the conductive polymer layer and a correlation between thickness of the conductive polymer layer and surface resistance of the flexure, and wherein the conductive polymer layer covers an outer periphery of the flexure spanning entirely in a cross section and spanning longitudinally from a second end of the flexure to an upper limit located between the second end and the slider pads, a region surrounding the slider pads being bare of the conductive polymer layer for sufficient longitudinal length to prevent ion migration while suppressing electrostatic discharge.