CHLOROSILICATE PHOSPHOR AND PREPARING METHOD OF THE SAME

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PURPOSE : A manufacturing method of silicate chloride-based phosphor is provided to provide a spherical silicate chloride-based phosphor having uniform particle size, excellent luminance efficiency, excellent productivity, and excellent profitability.CONSTITUTION : A manufacturing method of silicate chloride-based phosphor comprises : a step of obtaining metal salt-SiO2 sol mixed solution by mixing metal salt mixed solution, which comprises metal sat for synthesizing silicate chloride-based phosphor with rare earth metal, together with sol to liquid phase; a step of impregnating the metal salt-SiO2 sol mixed solution into a polymer material, drying the polymer material, and conducting low-temperature calcinations, preoxidation firing, and post reduction firing to obtain silicate chloride-based phosphor.[Reference numerals] (AA) Metal solution, aqueous silicon compound(WSS); (BB) Impregnation(cellulose); (CC) Mixing, stirring and drying under ultra sonic waves; (DD) First sintering(150-400°C, air); (EE) Second sintering(500-1000°C, air); (FF) 700-1400°C, sintering under reduction; (GG) PhosphorCOPYRIGHT KIPO 2013