Blue-violet phosphor for use in electroluminescent flat panel di

Details Blue-violet phosphor for use in electroluminescent flat panel di Blue-violet phosphor for use in electroluminescent flat panel di

1995-05-12

1997-02-11

Arana, Louis M.

Electric lamp and discharge devices

With luminescent solid or liquid material

Solid-state type

313506, 313509, H01J 162, H05B 3314

Patent

active

056024452

ABSTRACT:
A bright, short wavelength blue-violet phosphor for electroluminescent displays comprises an alkaline-based halide as a host material and a rare earth as a dopant. The host alkaline chloride can be chosen from the group II alkaline elements, particularly strontium chloride (SrCl.sub.2) or calcium chloride (CaCl.sub.2), which, with a europium (Eu) or cerium (Ce) rare earth dopant, electroluminesces at a peak wavelength of 404 and 367 nanometers (nm) respectively. The resulting emissions have CIE chromaticity coordinates which lie at the boundary of the visible range for the human eye thereby allowing a greater range of colors for full color flat panel electroluminescent (FPEL) displays.

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