BLUE PHOSPHOR FOR FLUORESCENT DISPLAY AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a blue phosphor having a high luminous efficiency for a fluorescent display and its manufacturing method. SOLUTION: The blue phosphor for a fluorescent display is obtained from a matrix comprising SrCO3and an activator comprising a Ce compound. In the method for manufacturing the blue phosphor for a fluorescent display, SrCO3and CeO2are homogeneously mixed according to the composition represented by general formula: SrCO3+xCeO2(wherein 0.01≤x<0.5) (step 10). Subsequently, the resultant mixture is subjected to a heat treatment at 800-900°C (step 20). COPYRIGHT: (C)2003,JPO