▎ 摘　　要

NOVELTY - Graphene substrate is manufactured by electrolytically polymerizing graphene carbon source on electroconductive or semiconductor substrate and forming graphene layer. USE - Manufacture of graphene substrate for semiconductor chip used for mobile telephone, digital audio-video equipment, and integrated circuit card. ADVANTAGE - A graphene substrate which has uniform graphene layer can be manufactured. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for graphene substrate which has graphene layer directly adhered to surface of electroconductive or semiconductor substrate.