| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for inexpensively producing fine phosphor particles being capable of forming a uniform dense high-luminance fluorescent film when used in e.g. cathode-ray tubes, fluorescent lamps, PDPs because it is highly crystalline, has a low content of agglomerations, and comprises fine particles, and having a high purity, a uniform chemical composition, and excellent luminous characteristics. SOLUTION: In the method for producing phosphor particles by spraying a phosphor constituent metal-containing solution into an entraining air to form liquid droplets, drying the droplets to form solid phosphor material particles, and heating the material particles to form a precursor of a phosphor and producing the phosphor particles through the route of the precursor, the above heating is continued in the state in which the precursor is in contact with a molten medium chemically inert to the phosphor to form a plurality of particles in a dispersed state from the phosphor floating in the entraining gas.
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