PHOSPHOR COMPOSITION, METHOD FOR PRODUCING THE SAME AND FLUORESCENT DISPLAY APPARATUS AND METHOD FO

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PROBLEM TO BE SOLVED : To provide a phosphor composition (a fluorescent material) with suppressed lowering of luminescence intensity (luminance) by remaining of impurities and to provide a method for producing the same. SOLUTION : The phosphor composition comprises Ln, R, M and O as principal constituent elements. In the composition, the atomic ratio x=(Ln+R)/M related to the Ln, R and M is 0.850

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