Planar stitched write head having write coil insulated with inorganic insulation
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United States of America Patent
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-
Apr 23, 2002
Issued Date -
N/A
app pub date -
Jan 16, 2001
filing date -
Dec 15, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A write head has a second pole tip layer, a coil layer and a write coil insulation layer that are planarized at their top surfaces. A thin top insulation layer insulates the top of the coil layer from a yoke portion of the second pole piece which is connected to the second pole tip layer in the pole tip region and connected to a first pole piece layer in a back gap region. In a preferred embodiment the write gap layer extends throughout the yoke region and provides the only insulation between the first pole piece layer and the coil layer. Further, it is preferred that the write coil insulation layer be an inorganic material such as silicon dioxide (SiO.sub.2). Several embodiments of the write head are provided along with novel methods of making.
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