The present invention is a low firing temperature, composite thick film dielectric
layer for an electroluminescent display. The composite thick film dielectric layer comprises;
- (a) a lower zone layer of a thick film composition comprising;
- one or more of lead magnesium niobate (PMN), lead magnesium niobate-titanate
(PMN-PT), lead titanate, barium titanate and lead oxide; and
- a glass frit composition comprising lead oxide, boron oxide and
silicon dioxide;
- (b) an upper zone comprising at least one layer of lead zirconate titanate
(PZT) and/or barium titanate; and
- (c) an intermediate composite zone comprising a composite of (a) and (b).
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