Method of making magnetoresistive read/ inductive write magnetic head assembly fabricated with silicon on hard insulator for improved durability and electrostatic discharge protection
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 19, 2003
Grant Date -
Apr 25, 2002
app pub date -
Mar 4, 1998
filing date -
Nov 25, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetoresistive read/inductive write magnetic head assembly formed on a hard electrically insulating substrate and having electrostatic discharge protection comprises: a hard electrically insulating substrate, preferably formed of sapphire or alumina-TiC; multiple alumina layers formed over the substrate; a magnetoresistive read/inductive write head positioned between the alumina layers; a silicon layer supported by the substrate; and a semiconducting circuit integrated into the silicon layer and interconnected with said magnetoresistive read/write inductive write head to provide electrostatic discharge protection to the head. The silicon layer may be epitaxially grown on the substrate when implemented as sapphire, or bonded to the substrate when implemented as alumina-TiC. The hard electrically insulating substrate and alumina layers provide the assembly with a hard air bearing surface having generally uniform lapping and etching characteristics, and excellent durability.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully