Glass composition suitable for use in a fluorescent lamp and in a cathode-ray tube, fluorescent lamp and cathode-ray tube manufactured using this glass composition
US4680503A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1985 |
| Grant date | Jul 14, 1987 |
| Priority date | — |
| Expiry date | Oct 8, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/863
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The glass composition in accordance with the invention is characterized by the absence of alkali metal oxides and by the presence of at least 10% by weight of barium oxide. The glass composition in accordance with the invention has favorable working properties (melting temperature below 1500.degree. C., working range in excess of 200 Celsius degrees, it is very corrosion resistant (also in a strong electric field), it is resistant to metal vapors including mercury vapor, it does not attack a phosphor and it is not subject to blackening. The glass composition in accordance with the invention is extremely suitable for use in fluorescent lamps (TL-, SL- and PL-lamps) and in projection-television face plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.