Kenneth M Liu

US Patent:

20090273859, Nov 5, 2009

Filed:

May 2, 2008

Appl. No.:

12/114502

Inventors:

Eric W. Flint - San Jose CA, US
Cherngye Hwang - San Jose CA, US
Kenneth M.T. Liu - San Jose CA, US
Eduardo Torres Mireles - Tlaquepaque, MX
Yongjian Sun - San Jose CA, US

International Classification:

G11B 5/60

US Classification:

3602354

Abstract:

A method of forming a pole tip topography associated with an air bearing surface (ABS) of a hard disk drive slider is disclosed. The method etches an exposed pole tip region of an ABS at a first angle with respect to the ABS to remove an irregularity from the exposed pole tip region and to flatten the exposed pole tip region. The exposed pole tip region lacks a photo-resist layer. The method also includes etching the flattened exposed pole tip region of the ABS at a second angle with respect to the ABS to form a recession with reference to the ABS.