A hard coating composition that can be coated on a transparent plastic substrate is disclosed. The hard coating composition includes (a) a silver nanoparticle sol, (b) a conductive filler, (c) a photocurable resin, (d) a photopolymerization initiator, and (e) an organic solvent. The composition has a viscosity of about 5 to 100 cps. The silver nanoparticle sol includes a plurality of silver nanoparticles. The plurality of silver nanoparticles has a diameter between about 1 nm and about 10 nm.