Data storage device having novel barrier players encapsulating the data storage medium
US4660175A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 8, 1985 |
| Grant date | Apr 21, 1987 |
| Priority date | — |
| Expiry date | Jul 8, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/25715
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is a data storage device having a chalcogendata storage medium encapsulated along at least one surface, and preferably both surfaces, by a dielectric barrier layer. The dielectric is compositionally graded in oxygen content with respect to the chalcogen data storage medium. The dielectric is a substantially stoichiometric oxide in proximity to the chalocogen data storage medium, and a substantially non-stoichiometric suboxide remote from the chalcogenide data storage medium. The resulting data storage device is relatively moisture blocking and non-reactive with the chalcogendata storage medium. Also disclosed are methods of making and using the data storage device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.