Patent ID: 7528448

Claim:
A thin film transistor comprising: a) a substrate selected from the group consisting of: polyethylene terephthalate, polyethylene naphthalate, triacetyl cellulose, glass and polyimide; b) a gate electrode; c) a dielectric layer; d) a source electrode; e) a drain electrode; and f) a semiconductor layer; wherein at least one of the gate, source and drain electrodes comprises a metal composition (A) comprising: (1) about 65 to about 95 wt %, based on the total weight of the metal composition, of a metal powder selected from the group consisting of: Ag, Cu and alloys thereof; having a plurality of metal particles having an average longest dimension of about 5 nm to about 1500 nm; and (2) about 5 to about 35 wt % of a dispersant comprising one or more resins selected from the group consisting of: conducting polymers selected from the group consisting of: polyaniline, polythiophene, polypyrrole, polyheteroaromatic vinylenes, and their derivatives; nonconducting polymers selected from the group consisting of: acrylic and styrenic-acrylic latexes, and solution-based acrylics and styrenic-acrylic (co)polymers, and combinations thereof; copolymers of ethylene with one or more monomers selected from the group consisting of: (meth)acrylate(s), vinyl acetate, carbon monoxide and (meth)acrylic acid; and polyvinylacetate and its copolymers.