Patent ID: 6469875
Filing Date: 2002-10-22
Classification: B82Y,G11B,Y10T

Abstract:
A method of fabricating a stitched write head having a sunken share pole; comprising the steps of:a) forming a bottom coil dielectric layer over a first half shared pole over a substrate; b) forming coils over said bottom coil dielectric layer; c) forming a front second half shared pole over said first half shared pole and forming a back second half shared pole over said first half shared pole; d) forming a top coil dielectric layer over said bottom coil dielectric layer, and said coils; e) planarizing by chemical-mechanical polishing said top coil dielectric layer to make said top coil dielectric layer coplanar with said second half shared poles; f) forming a write gap layer over said front second half shared pole and over said top coil dielectric layer above said coils; g) forming a upper pole over said write gap layer; h) etching said write gap layer and said front and back second half shared pole, using said upper pole as an etch mask, to remove a portion of said second half shared pole adjacent to said write gap layer thereby forming a partially trimmed pole.