ELECTRON BEAM EXCITED PHOSPHOR OR PHOSPHOR FILM AND COLOR DISPLAY UNIT UTILIZING THE SAME

摘要

To provide a phosphor for an electron beam excitation with a small deterioration in an emission efficiency and capable of maintaining a high luminance, even when an excitation density of an electron beam for a phosphor excitation is increased. As raw materials, Ca 3 N 2 (2N), AlN(3N), Si 3 N 4 (3N), and Eu 2 O 3 (3N) are prepared, and the raw materials thus prepared are measured and mixed, so that a molar ratio of each element becomes (Ca + Eu) : Al : Si = 1 : 1 : 1. Then, the mixture thus obtained is maintained and fired for at 1500°C for 3 hours, and thereafter crushed, to manufacture the phosphor having a composition formula Ca 0.985 SiAlN 3 :Eu 0.015 .