Patent ID: 6288880
Filing Date: 2001-09-11
Classification: G11B,Y10T

Abstract:
A method for manufacturing a read head protection circuit within a read head having at least one magnetic shield, and at least one sensor element, including the following steps, performed on a substrate:applying a first layer of insulating material;applying a first gate structure;applying a layer of removable material over the first gate structure;removing a portion of the removable material which is coplanar with a plane that is parallel to an interface between the substrate and the first layer of insulating material;removing the first gate structure such that at least one vertical wall remains;applying material to form a first magnetic shield and at least a first parasitic shield; andremoving excess material from the surface of the first magnetic shield and each parasitic shield, such that there is no conductive path between the first magnetic shield and any of the parasitic shields.