Patent ID: 7656620
Filing Date: 2010-02-02
Classification: G11B

Abstract:
1. A magnetic head device comprising: a lower shield layer formed of a soft magnetic material; an upper shield layer formed of a soft magnetic material and spaced apart from the lower shield layer; a detecting element disposed between the lower shield layer and the upper shield layer, a current being applied to the detecting element in a thicknesswise direction, the lower shield layer and the upper shield layer forming a current path; a lower conductive electrode and an upper conductive electrode provided between the lower shield layer and the upper shield layer, the lower conductive electrode being electrically connected to the lower shield layer, the upper conductive electrode being electrically connected to the upper shield layer; and one or more insulating layers respectively provided between the lower shield layer and the upper conductive electrode, and between the upper shield layer and the lower conductive electrode, such that the lower shield layer and the upper conductive electrode are insulated from each other, and the upper shield layer and the lower conductive electrode are insulated from each other; wherein the lower conductive electrode is formed at a location directly adjacent to a top surface of the lower shield layer, the upper conductive electrode faces a bottom surface of the upper shield layer with one of the insulating layers therebetween, and the upper conductive electrode and the upper shield layer are electrically connected to each other through a defective portion of the insulating layer disposed therebetween.