Planar thin-film magnetic head and manufacturing method therefor
US6104575A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1998 |
| Grant date | Aug 15, 2000 |
| Priority date | — |
| Expiry date | Feb 2, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A planar thin-film magnetic head including a lower magnetic pole having a first end portion and a second end portion, and an upper magnetic pole having a first end portion magnetically joined to the first end portion of the lower magnetic pole and a second end portion. A gap is defined between the second end portion of the lower magnetic pole and the second end portion of the upper magnetic pole. The thin-film magnetic head further includes a coil having a center positioned in the vicinity of the gap and spirally formed so as to pass between the upper magnetic pole and the lower magnetic pole. The coil is embedded in an insulating layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.