Patent ID: 6678942
Filing Date: 2004-01-20
Classification: G11B,Y10T

Abstract:
A method of manufacturing a thin film magnetic head including;a first magnetic layer having a pole portion which is to be opposed to a magnetic record medium; a second magnetic layer having a pole portion which constitutes an air bearing surface together with said pole portion of the first magnetic layer, and being magnetically coupled with said first magnetic layer at a position remote from said air bearing surface; a gap layer made of a non-magnetic material and inserted between said pole portion of the first magnetic layer and said pole portion of the second magnetic layer at least at said air bearing surface; a thin film coil means formed by one or more layer thin film coils and having a portion which is arranged between said first and second magnetic layers by means of an insulating layer; a substrate supporting said first and second magnetic layers, gap layer, insulating layer and thin film coil; and further comprising contact pads for inner ends of said first and second thin film coils halves located adjacent to a contact hole such that none of the contact pads is located between another contact pad and the contact hole, wherein a step of forming at least first and second layer thin film coils comprising: the step of forming a first insulating layer such that the insulating layer is supported by said substrate; the step of forming a first thin film coil half of the first layer thin film coil on a surface of said insulating layer into a coil fashion such that adjacent coil windings are separated from each other by a distance which is larger than a width of coil windings; the step of forming a second thin film coil half in a coil fashion such that coil windings of the second thin film coil half are placed within spaces formed between successive coil windings of said first thin film coil half with interposing a second insulating layer between these coil windings; the step of forming a third insulating layer over said first and second thin film coil halves; the step of forming a first thin film coil half of the second layer thin film coil on a surface of said third insulating layer into a coil fashion such that adjacent coil windings are separated from each other by a distance which is larger than a width of coil windings, connecting an inner or outer end of said first thin film coil half of the second layer thin film coil to an inner or outer end of said first thin film coil half of said first layer thin film coil, and connecting an outer or inner end of said first thin film coil half of the second layer thin film coil to an outer or inner end of the second thin film coil half of the first layer thin film coil; the step of forming a second thin film coil half in a coil fashion such that coil windings of the second thin film coil half are placed within spaces formed between successive coil windings of said first thin film coil half with interposing a fourth insulating layer between these coil windings, and connecting an inner or outer end of the second thin film coil half of the second layer thin film coil to an inner or outer end of the second thin film coil half of the first layer thin film coil; the step of forming a fifth insulating layer over said first and second thin film coil halves of the second layer thin film coil; and the step of forming first and second leads connected respectively to an outer or inner end of the first thin film coil half of the first layer thin film coil and to an outer or inner end of said second thin film coil half of the second layer thin film coil.