Color filter and cathode-ray tube using the color filter
US4977347A · kind A · utility
12Cited by
6References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1989 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Aug 4, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/898
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A color filter comprising a vitreous material including at least one kind of organic compound having visible light absorbing properties, and at least one metallic compound selected from the group consisting of a Ni compound and a Co compound. A given dye can be used in the color filter of this invention as the organic compound. Thus, the hue of the color filter is freely selectable. In addition, high light resistance can be attained by sealing the organic compound in the vitreous material in the presence of the metal compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.