Plastic substrate and device including the same

A plastic substrate, comprising:

• a plastic film;
• a metal layer formed on the plastic film, wherein the conductive metal layer has a thickness ranging from 1 to 1000 nm;
• a resin layer formed on the metal layer, wherein the resin layer has a thickness ranging from 10 nm to 25.5 μm,
• wherein the plastic film and resin layer are a polyimide having an average coefficient of linear thermal expansion of 50.0 ppm/° C. or less when measured in a temperature range from 50° C. to 250° C. using a thermomechanical analyzer for a film thickness of 50-100 μm, with a yellowness index of 15 or less, and
• wherein the plastic substrate has a light transmittance of 50% or more at a wavelength of 500 nm and a surface resistivity of 2.5×106Ω/sq or less.