Thin film magnetic head and method of manufacturing the same
US6342993B1 · kind B1 · utility
24Cited by
10References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 12, 1999 |
| Grant date | Jan 29, 2002 |
| Priority date | — |
| Expiry date | Oct 12, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/3996
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A concave portion corresponding to the reading track width is formed in the surface of a bottom shield layer so that a step is formed in an insulating layer (bottom shield gap film) between the region where an AMR element is formed and the region where a lead electrode layer is formed. Thereby, the lead electrode layer can be made thicker. At the same time, a step on a top shield layer side can be suppressed even if the lead electrode layer is formed thick. Also, height of a photoresist pattern used for lift-off can be decreased so that the reading track width can be made narrow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.