Fluorescent material substrate and image display device, and methods for manufacture thereof
US8084931B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Feb 23, 2010 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Aug 13, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K11/7786
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Degradation of a fluorescent material used in an image display device provided with an electron emitting device that is caused by heating in the process of manufacturing the device is prevented.A coating layer 44b composed of SiO2 is formed on the surface of fluorescent material particles 44a, and any metal 49 from among Bi, Pb, Sn, and Sb is added to the coating layer 44b so that the metal concentration at the surface of the coating layer is equal to or greater than 0.05 ppm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.