Li He

7238292, Jul 3, 2007

Jul 30, 2004

10/909224

Li He - Fremont CA, US
Ming Zhao - Fremont CA, US
Yining Hu - Fremont CA, US

Western Digital (Fremont), Inc. - Fremont CA

B44C 1/00
G11B 5/127

216 22, 216 41, 216 49, 216 59, 216 67, 216 88, 2960303, 2960312, 20419234

A head including a write element for writing data to a magnetic media, and methods for its production are provided. A write element of the invention includes one or more of a recessed first pole, a heat sink layer, and a shortened yoke length. A method of the invention provides forming an anti-reflective layer before forming a mask layer. During photolithography the anti-reflective layer suppresses undesirable reflections off of features, such as vertical sidewalls, that otherwise limit how closely to such features portions of the mask layer can be formed.

7552523, Jun 30, 2009

Jul 1, 2005

11/172778

Li He - Fremont CA, US
Jun Liu - San Ramon CA, US
Danning Yang - Fremont CA, US
Yining Hu - Fremont CA, US

Western Digital (Fremont), LLC - Fremont CA

G11B 5/127
H04R 31/00

2960316, 2960313, 2960314, 2960315, 2960318, 216 62, 216 66, 216 67, 360122, 360317, 451 5, 451 41

A method and system for manufacturing a perpendicular magnetic recording transducer by a process that includes plating is described. The method and system include forming a chemical mechanical planarization (CMP) uniformity structure around a perpendicular magnetic recording pole. The CMP uniformity structure has a height substantially equal to a desired pole height. The method and system also include fabricating an insulator on the CMP uniformity structure and performing a CMP to remove a portion of the insulator. The CMP exposes a portion of the perpendicular magnetic recording pole and planarizes an exposed surface of the perpendicular magnetic recording transducer.