Phosphor, cathode-ray tube, fluorescent lamp and radiation intensifying screen
US5644193A · kind A · utility
40Cited by
15References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1994 |
| Grant date | Jul 1, 1997 |
| Priority date | — |
| Expiry date | Dec 16, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/70
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a phosphor suitable for use in a cathode-ray tube, a fluorescent lamp, a radiation intensifying screen, which comprises transparent spherical particles having an average particle size of 0.5 to 20 .mu.m and a ratio of the major diameter to the minor diameter of individual particles in the range of 1.0 to 1.5, and ultrafine particles having a diameter of 0.2 .mu.m or less in an amount of 5 wt % or less.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.