Patent ID: 7770281
Filing Date: 2010-08-10
Classification: G11B,Y10T

Abstract:
1. A method of forming a perpendicular magnetic recording write head having a trailing shield (TS), the write head with TS being formed on a substrate, the substrate being later cut along a line to form a plane generally perpendicular to the substrate, the method comprising: forming a write pole (WP) of magnetic material on the substrate; depositing a gap layer of nonmagnetic material on the WP; depositing an electrical lapping guide (ELG) layer of electrically conductive material on the substrate adjacent to and spaced from the WP; forming a patterned trailing shield (TS) pad layer of nonmagnetic material on the ELG layer and the gap layer, the TS pad layer having a generally linear front edge extending across the ELG layer and the gap layer and recessed from the substrate cut line; depositing an ELG protection layer on the ELG layer in a region between the substrate cut line and the TS pad layer front edge; removing the TS pad layer material from the ELG layer in the region recessed from the TS pad layer front edge; removing the ELG layer in regions not covered by the ELG protection layer; and removing the ELG protection layer, leaving the ELG layer having a back edge generally collinear with the TS pad layer front edge.