Magnetoresistive device and method of manufacturing same and thin-film magnetic head and method of manufacturing same
US6721140B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2001 |
| Grant date | Apr 13, 2004 |
| Priority date | — |
| Expiry date | Jun 21, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/3996
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A read head includes: an MR element that detects a magnetic field; a pair of electrode layers for feeding a sense current to the MR element; and a bottom shield layer and a top shield layer that sandwich and shield the MR element and the electrode layers; a bottom insulating layer disposed between the MR element/the electrode layers and the bottom shield layer; a top insulating layer disposed between the MR element/the electrode layers and the top shield layer; a bottom semiconductor layer that is made up of a single layer and disposed between the electrode layers and the bottom shield layer, for connecting the electrode layers and the bottom shield layer; and a top semiconductor layer that is made up of a single layer and disposed between the electrode layers and the top shield layer, for connecting the electrode layers and the top shield layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.