Patent ID: 6072198
Filing Date: 2000-06-06
Classification: C09K,H05B

Abstract:
A light emitting phosphor material for an alternating current thin-film electroluminescent device that includes said phosphor material sandwiched between a pair of dielectric layers suitable to substantially prevent DC current from flowing therebetween, where said phosphor material comprises M.sup.II S:D,H,F wherein,M.sup.II is taken from the group calcium, strontium, barium and magnesium;S is sulfur;D is taken from the group copper, lead, gold, silver, magnesium, antimony, bismuth and arsenic;H is taken from the group fluorine, chlorine, bromine and iodine; andF is taken from the group gallium, indium, aluminum, germanium, silicon, lanthanum, scandium and yttrium.