PEN Plastic Film 1) Mateials PET : Polyethylene Terephthalate PEN : Polyethylene Naphthalate 2)PEN Film Size : 297mm x 210mm x 125umTh ITO (Indium Tin Oxide) Coated PEN Film ITO PEN is an electro-conductive plastic film for a transparent electrode. The polyethylene naphthalate (PEN) film is used as the substrate, which has high transparency, high thermo-stability, low moisture..