Invention Grant
US08946835B2 Magnetic device with different planarization areas 有权
具有不同平面化区域的磁性装置

Magnetic device with different planarization areas
Abstract:
A planarization process may planarize a media disk that has data trenches between data features and larger servo trenches between servo features. A filler material layer is deposited on the media disk and provides step coverage of the trenches. The filler material has data recesses over the data trenches and servo recesses over the servo trenches that must be removed to produce a planar media surface. A first planarization process is used to remove the data recesses and a second planarization process is used to remove the servo recesses.
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