Patent ID: 7380332
Filing Date: 2008-06-03
Classification: G11B,Y10T

Abstract:
1. A process for manufacturing a coil structure for a magnetic head, comprising: depositing an insulating layer; depositing a photoresist layer on the insulating layer; depositing a silicon dielectric layer on the photoresist layer; masking the silicon dielectric layer; reactive ion etching at least one channel in the photoresist layer and the silicon dielectric layer such that the reactive ion etching defines a first segment of the channel in the photoresist layer having a sidewall oriented at a first angle relative to a plane of deposition of the insulating layer and a second segment of the channel having a sidewall oriented at a second angle relative to the plane of deposition of the insulating layer, the second angle being greater than the first angle; depositing a conductive seed layer in the channel; filling the channel with a conductive material to define a coil structure; and chemical-mechanical polishing the conductive material and the conductive seed layer for the planarizing thereof.