Patent ID: 7969685

Claim:
A DFH slider having a high and uniform DFH efficiency across the surface of a rotating disk and reduced sensitivity of its operational flying height to disk surface irregularities and environmental conditions, said slider comprising: an ABS topology, including separated front and rear portions, wherein said front portion further includes a pair of laterally disposed parallel side rails, a topologically patterned divided center rail formed substantially midway between said side rails and parallel to said side rails and airflow channels formed within said central rail and between said center rail and said side rails; wherein a front edge of a transverse portion of said center rail includes a pair of laterally disposed wing-like projections symmetrically disposed about a center line of said transverse portion, thereby forming a concavity within a front edge perimeter of said center rail and wherein a rearward directed extension projects from a rear edge of said transverse portion and wherein a micro-pad is formed within said concavity, said micro-pad having a width dimension, w mp and a lateral dimension l mp and said micro-pad is surrounded laterally by said wing-like projections and said micro-pad is partially separated from said central rail front edge perimeter by a trench having a width w t and depth d t , and wherein a bridge structure is formed along said center line connecting said micro-pad to said transverse portion of said central rail; and a read/write head and DFH heating element is embedded within said micro-pad, said heater being capable of providing a thermally induced protrusion of said micro-pad with a uniform and diminished pushback effect.