COATED PHOSPHOR AND METHOD FOR PRODUCING COATED PHOSPHOR

摘要

The object of the present invention is to provide a coated phosphor in which the release of sulfur-based gas in high-temperature, high-humidity conditions can be suppressed. A coated phosphor (1) has a structure in which a sulfide phosphor (2) is coated with a silicon dioxide film (4) containing a metal oxide powder (3). The coated phosphor (1) is obtained by mixing the sulfide phosphor (2), an alkoxysilane, the metal oxide powder (3) and a catalyst are mixed in a solvent, and coating the sulfide phosphor (2) with the silicon dioxide film (4) containing the metal oxide powder (3) and formed by alkoxysilane.