Patent ID: 6877213
Filing Date: 2005-04-12
Classification: G11B,Y10T

Abstract:
1. A method for reducing feature size in a thin film magnetic write head using low temperature deposition coating of photolithographically-defined trenches, comprising the steps of: forming a base layer; applying a plating seed layer over said base layer; applying a photoresist layer over said plating seed layer to a desired thickness; defining a trench in said photoresist layer that exposes said plating seed layer, said trench having substantially vertical side walls and a bottom defined by said plating seed layer; depositing an insulative spacer layer using a low temperature chemical vapor deposition process to cover said trench side walls; anisotropically etching horizontal portions of said spacer layer to remove spacer layer material from said trench bottom to expose said plating seed layer while leaving intact vertical portions of said spacer layer that cover said trench side walls, thereby defining a narrowed trench; electroplating metallic material onto said plating seed layer to form a structure in said narrowed trench; stripping away said photoresist layer; and stripping away said spacer layer vertical portions; whereby a structure of reduced feature size is formed.