Current perpendicular-to-plane read sensor with back shield
US8077435B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2008 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Apr 9, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/3996
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a read head for reading data from a magnetic media. The read head includes a bottom magnetic shield layer, a top magnetic shield layer, and a read sensor disposed between the bottom and top magnetic shield layers. The read sensor is configured for sensing changes in a magnetic field of the magnetic media positioned under the read sensor. The read sensor has a front end adjacent to an air bearing surface (ABS) and a back end opposite the front end. The read head also includes a back magnetic shield layer positioned between the bottom and top magnetic shield layers and behind the back end of the read sensor distal to the ABS.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.