Phosphor and method for the fabrication thereof
US6280656A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2000 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Feb 8, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2993
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A phosphor includes about 99 dry weight % cathodoluminescent particles, which have a mean particle diameter equal to about 4 microns, and about 1 dry weight % non-cathodoluminescent inorganic particles, which have a mean particle diameter equal to about 20 microns. A method for fabricating phosphor includes the steps of providing an aqueous polyvinyl alcohol solution having about 7.5 weight % polyvinyl alcohol, adding cathodoluminescent particles to the aqueous polyvinyl alcohol solution to provide a cathodoluminescent particle solution having about 16.5 volume % cathodoluminescent particles, and adding non-cathodoluminescent inorganic particles to the cathodoluminescent particle solution to provide a phosphor paste. Non-cathodoluminescent inorganic particles function as dispersants and suspension-stabilizing agents in the phosphor paste.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.