Thin-film magnetic head and method of manufacturing same
US6541065B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | May 2, 2002 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | May 2, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/3967
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A thin-film magnetic head comprises a bottom pole layer, a top pole layer, a recording gap layer, and first and second thin-film coils. The bottom pole layer includes a first layer disposed to face toward the first and second thin-film coils, and second and third layers disposed closer to an air bearing surface than the first and second thin-film coils are. In a method of manufacturing the thin-film magnetic head, the first thin-film coil and the second layer are formed in this order on a magnetic layer that has a wholly flat top surface and is to be the first layer. Then, the magnetic layer is patterned to complete the first layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.