Optical recording medium
US6258433A · kind A · utility
12Cited by
5References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Aug 3, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A half-transmissive film of an optical disk is formed using a Cu oxide instead of Au, while achieving similar reflectivity characteristics to those of Au. Alternatively, the half-transmissive film may comprise a compound of Cu with a corrosion-resistant material, or a stack of layers comprising a lower layer film of Cu, Ag, or Al and an upper layer film of a corrosion-resistant material. Further, the half-transmissive film may comprise ZnS.SiO.sub.2, a nitride of Ti, indium-tin-oxide, or an alloy of Au and Cu or a compound including Au and Cu.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.