A phosphor without using cadmium having excellent luminous characteristic
which emits a light in the visible region. The phosphor is prepared by
mixing 1% of B.sub.2 O.sub.3 powder and 10% of In.sub.2 O.sub.3 with
CaS:Eu, Ce phosphor to prepare a mixture to which is added vehicle
containing an organic binder to form paste. The vacuum fluorescent display
using the phosphor exhibits lifetime performance and initial luminance
superior to the fluorescent display in which a phosphor without using
cadmium is applied.
