Thick film compositions for use in electroluminescent applications

1. A thick film composition comprising:

a) functional component;

b) PVDF/HFP polymer resin, a copolymer of PVDF/HFP polymer resin, or mixtures thereof; dissolved in

c) organic solvent.

with the provisos that the PVDF/HFP resin has i) a melt viscosity of 0.2-0.7 kPoise and ii) a DSC melt temperature in the range of 85-98° C.

2. The composition of claim 1 wherein said functional component is selected from silver, carbon, graphite or mixtures thereof.

3. The composition of claim 1 wherein said functional component is selected from phosphor, phosphor-containing particles, or mixtures thereof.

4. The composition of claim 1 wherein said functional component is selected from BaTiO 3 , TiO 2 , or mixtures thereof.

5. The composition of claim 1 wherein the PVDF/HFP resin contains 12-16 mole % of hexafluoropropylene (HFP) in the total resin composition.

6. The composition of claim 1 further comprising an adhesion promoter.

7. The composition of claim 1 further comprising a flow additive.

8. The composition of claim 1 wherein the organic solvent is selected from the group consisting of carbitol acetate.

9. An electroluminescent panel utilizing the composition of any one of claims 1 - 8 .

10. A method of forming an electroluminescent panel comprising:

(a) providing a substrate;

(b) depositing at least one layer of a phosphor-containing thick film composition onto said substrate;

(c) depositing a least one layer of a dielectric thick film composition onto the layer of (b); and

(d) depositing at least one layer of a conductive thick film composition onto the layer of (c);

wherein at least one layer of (b), (c) or (d) contains a PVDF/HFP polymer resin, copolymer of a PVDF/HFP polymer resin, or mixtures thereof which has i) a melt viscosity of 0.2-0.7 kPoise and ii) a DSC melt temperature in the range of 85-98° C.