Patent ID: 7757380
Filing Date: 2010-07-20
Classification: G11B,Y10T

Abstract:
1. A method for making a perpendicular head comprising: fashioning a pole structure on a surface of a substrate, said pole structure having a tapered pole section in contact with said substrate, a gap layer deposited on said tapered pole section, and a spacer layer deposited on said gap layer; depositing a dielectric layer on said surface of said substrate, enclosing said pole structure, said dielectric layer having a first portion of thickness T depositing a photo resist layer on said dielectric layer; removing a first portion of said photo resist layer over said first portion of said dielectric layer; depositing a stop layer subsequent to removing said first portion of said photo resist; removing a second portion of said photo resist deposited on said second raised portion of said dielectric layer, wherein a portion of said stop layer deposited on said second portion of said photo resist is removed; and, planarizing said dielectric layer by a CMP process, subsequent to removing said second portion of said photo resist deposited on said second raised portion of said dielectric layer, a portion of said stop layer deposited on said first portion of said dielectric layer serving to terminate said CMP process.