The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 07, 2003
Filed:
Jun. 01, 2000
TDK Corporation, Tokyo, JP;
Abstract
On a wafer-like substrate , there are formed a number of thin film magnetic head elements in matrix, each of which is formed to include a first shield film formed on the wafer-like substrate , a first insulating film formed on the first shield film, a magnetoresistive element and first and second electrode films connected to respective ends of the magnetoresistive element formed on the first insulating film, a second shield film formed to cover the magnetoresistive element and first and second electrode films , a second insulating film formed on the second shield film, and a conductive film electrically connected to the first electrode film 11 and second shield film and having a middle portion which is separated from a side edge of the second shield film by a distance &Dgr;G viewed in a film stacking direction. Since the first electrode film and second shield film become equipotential, no voltage is applied across the first and second insulating films and dielectric breakdown does not occur. By cutting the middle portion of the conductive film , property of the magnetoresistive element can be measured. Since the middle portion of the conductive film situates outside the second shield film , a generation of conductive material debris upon cutting can be prevented, and a cut surface of the first electrode film and second shield film are not short-circuited.