CATHODE RAY TUBE PHOSPHORS

摘要

A cathode ray tube phosphor has the composition x(ZnO)Y2SiO7, 1>/=x>/=0.42 doped with at least one emitting ion. The emitting ion may be Mn<4><+> or Eu<3><+> to give a red emission; Mn<2><+> or Tb<3><+> to give a blue emission. The phosphor (5) is coated on the inner face plate of a cathode ray tube (1). The coating may have different areas coated with different emitting ion to give a colour television tube. The tube may be used as part of an aircraft head up display.