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

摘要

An electron beam excited phosphor that even when the excitation density of electron beams for phosphor excitation is increased, is capable of sustaining high luminance with a lowering of luminous efficiency minimized. Phosphor of the composition formula Ca_0.985SiAlN₃:Eu_0.015 is produced by a process comprising providing Ca₃N₂(2N), AlN(3N), Si₃N₄(3N) and Eu₂O₃(3N) as raw materials; conducting weighing and mixing so that the molar ratio of elements satisfies the relationship (Ca+Eu):Al:Si=1:1:1; firing the mixture by holding it in an inert atmosphere at 1500°C for 3 hr; and pulverizing the fired mixture.