Patent ID: 8801945
Filing Date: 2014-08-12
Classification: G11B

Abstract:
1. A manufacturing method of a thermally assisted magnetic head slider, comprising steps of: (a) providing a wafer with a plurality of thermally assisted magnetic head slider elements each of which has a substrate with an air bearing surface, a read element and a write element including a first magnetic pole, a second magnetic pole, coils, a waveguide, and a plasmon unit; (b) cutting the wafer into a plurality of row bars; (c) lapping surfaces of the row bars so as to obtain a predetermined requirement; (d) etching a first recess on a near-field light generating surface of the plasmon unit, thereby the plasmon unit is apart from the air bearing surface with a first predetermined distance; (e) depositing a protective layer on the near-field light generating surface of the plasmon unit; and (f) cutting the row bar into a plurality of individual thermally assisted magnetic head slider.