Grooved optical data storage device including a chalcogenide memory layer
US4719594A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1985 |
| Grant date | Jan 12, 1988 |
| Priority date | — |
| Expiry date | Aug 26, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/146
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Disclosed is an optical data storage device having incorporated therein an optical data storage medium. The optical data storage device is switchable between at least two detectable states by the application of projected beam and energy thereto. The optical data storage device has a first substantially transparent substrate with a first polymeric adhesive layer thereon characterized by grooves in the form of lands and valleys, a first inorganic encapsulating layer, a layer of the state changeable chalcogenide memory material, a second inorganic encapsulating layer, an adhesive layer, and a second substantially transparent substrate adherant to the adhesive layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.