Field emission display having a stabilized phosphor
US5844361A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1996 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | Dec 13, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7769
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A field emission display (100, FIG. 1) having a stabilized phosphor (110, FIG. 1) includes a cathode plate (130, FIG. 1) having a plurality of field emitters (160, FIG. 1), an anode plate (120, FIG. 1) opposing the cathode plate (130, FIG. 1), and a stabilized sulfide phosphor disposed on the anode plate (120, FIG. 1) to receive electrons from the plurality of field emitters (160, FIG. 1). The stabilized sulfide phosphor includes a sulfide phosphor core containing vacuum-unstable sulfur and a stabilized surface made from a more thermodynamically stable material, which is more thermodynamically stable against outgassing than the vacuum-unstable sulfur of the sulfide phosphor core. The stabilized phosphor (110, FIG. 1) can alternatively include a stabilized oxide phosphor that has an oxide phosphor core containing vacuum-unstable oxygen and a stabilized surface made from a more thermodynamically stable material, which is more thermodynamically stable against outgassing than the vacuum-unstable oxygen of the oxide phosphor core.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.