Patent ID: 6781790
Filing Date: 2004-08-24
Classification: B82Y,G11B

Abstract:
A thin film magnetic head comprising:a substrate; a first magnetic member supported by said substrate and having a recess formed in a surface thereof, said surface being opposite to a surface on which the first magnetic member is supported by the substrate, and said recess being formed at an inner position than a throat height zero reference position; a thin film coil a part of which is provided in said recess which is formed in the surface opposite to the surface on which the first magnetic member is supported by the substrate, said thin film coil including a plurality of coil windings; an insulating member supporting said plurality of coil windings of the thin film coil and extending externally beyond said recess, an outer edge of the insulating member defining said throat height zero reference position; a second magnetic member formed on a surface of said insulating member remote from the substrate and including a pole portion extending up to an air bearing surface beyond said insulating member, a width of said pole portion defining a write track width; and a write gap layer provided at least between said first magnetic member and said second magnetic member, wherein said insulating member is formed by a first insulating layer supporting the coil windings of the thin film coil in the recess, and a second insulating layer extending outwardly beyond the recess such that said throat height zero reference position is defined by an outer edge of the second insulating layer, said write gap layer is formed also between said first magnetic layer and said thin film coil.