Optical information recording medium
US6177167A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1998 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Nov 25, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical information recording medium includes a first dielectric protective layer, a recording layer provided on the first dielectric protective layer, including a material represented by a chemical formula of Ag.alpha.In.beta.Sb.gamma.Te.delta., wherein .alpha., .beta., .gamma. and .delta. respectively represent an atomic percent of Ag, an atomic percent of In, an atomic percent of Sb, and an atomic percent of Te, and satisfy the conditions of: PA1 1.ltoreq..alpha.<10, PA1 1<.beta..ltoreq.20, PA1 35.ltoreq..gamma..ltoreq.70, PA1 20.ltoreq..delta..ltoreq.35, PA1 .alpha.+.beta.+.gamma.+.delta.=100, PA1 4.beta.-.delta..ltoreq.0, PA1 .gamma.-2.delta..gtoreq.0, and PA1 .gamma.-8.alpha..gtoreq.0, PA1 a second dielectric protective layer provided on the recording layer, and a light reflection and heat dissipation layer provided on the second dielectric protective layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.