Thin film magnetic head having spiral coils and manufacturing method thereof
US7085099B2 · kind B2 · utility
6Cited by
8References
19Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 20, 2004 |
| Grant date | Aug 1, 2006 |
| Priority date | — |
| Expiry date | May 9, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/31
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention is directed to improvement of a write element of a thin film magnetic head. In the write element, a lower coil surrounds in a spiral form a back gap portion, arranged within a height of a lower pole. An upper coil is disposed above the lower coil, surrounding in a spiral form the back gap portion and arranged within a height of an upper pole. A gap film is at an intermediate level in the pole length that is defined by the height of the lower pole and the height of the upper pole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.