▎ 摘　　要

NOVELTY - Manufacturing a graphene film involves preparing a catalyst metal having at least a surface on which graphene is formed; forming a support layer on the graphene; and isolating the graphene and the support layer from the catalyst metal by dipping the catalyst metal in an electrolytic solution perpendicularly to a liquid surface of the electrolytic solution when a voltage is applied to the catalyst metal. USE - The method is useful for manufacturing graphene film (claimed) used in transparent electrode, an active layer, a display device including the transparent electrode and the active layer, an electronic device, an optoelectronic device, a battery, and a solar battery. ADVANTAGE - Method of manufacturing graphene film is provided by which manufacturing processes are simplified and a manufacturing time is reduced. A graphene film yield may be improved to be higher than a manufacturing method in which a catalyst metal is etched. The graphene has improved electric characteristics. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a graphene film manufactured by a method which involves forming a graphene film comprising graphene and a support layer on at least one surface of a catalyst metal; and isolating the graphene film from the catalyst metal by dipping the catalyst metal in an electrolytic solution perpendicularly to a liquid surface of the electrolytic solution when a voltage is applied to the catalyst metal.