| PATENT CLAIMS |
Element comprising backing electrode, reflective insulating layer (I); luminescent layer (II) & transparent electrode, the IMPROVEMENT comprises said (I) composed of (I) compn comprising high dielectric binder resin (III), inorganic high dielectric powder & an impurity ion killer selected from inorganic ion exchanger contg -OH & IV-A group metal & alkoxysilane: C6H13-Si(OMe)3 & (III) comprising graft polymer prepd by graft polymn poly(vinylidene fluoride) with hexafluoropropene & cyanoethylated acrylic monomer of formula
- (CH2=CR-CO2)x-y-R'-(OCH2CH2CN)y; x = No. of -OH origi
nally attached to R', y is No. satisfying 1 R'=1-8C straight chain alkylene group
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