Process for the production of electroluminescent powders for display panels
US4263339A · kind A · utility
29Cited by
5References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1979 |
| Grant date | Apr 21, 1981 |
| Priority date | — |
| Expiry date | Jun 25, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B33/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process is provided for producing electroluminescent powders for use in information display panels of the type in which a monoparticle layer of electroluminescent powder is embedded in a high dielectric constant resin between two electrodes. The powders are zinc sulfide powders coactivated with aluminum and capable of emitting white light, as well as light of various colors. In the production of these powders they are treated to form an impermeable inorganic surface coating on the powder particles. The coating may be zinc phosphate or glass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.