Patent ID: 6325947
Filing Date: 2001-12-04
Classification: G11B,Y10T

Abstract:
A method for forming a merged thin film magnetic head having a pole tip region, a yoke region and a back gap region, said yoke region having a pole tip end and a back gap end, comprising the steps of:forming a first shield layer having a flat planarization surface;disposing a read sensor including gap layers on said first shield layer at said pole tip region;forming a patterned combined second shield and bottom pole piece layer overlaying said read sensor arranged in a sandwich having said read sensor between said first shield layer and said combined second shield and bottom pole piece layer at said pole tip region, said combined second shield and bottom pole piece layer overlaying and magnetically coupled with said first shield layer at said pole tip end of said yoke region, and overlaying and magnetically coupled with said first shield layer at said back gap region, wherein said pattern of said combined second shield and bottom pole piece layer forms an opening in said yoke region thereof to expose said flat planarization surface of said first shield layer;depositing a plurality of thin film coil layers on said flat planarization surface of said first shield layer; anddepositing a top pole piece layer overlaying said thin film coil.