▎ 摘　　要

NOVELTY - A graphene film has wrinkle density of 0.004 per mu m2 or less. USE - Graphene film used for manufacture of composite (all claimed) for transistor. ADVANTAGE - The graphene film has reduced wrinkle density by having reduced stress which arises according to the thermal expansion coefficient difference of substrate and graphene film. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) composite, which has a substrate of 0.1 mm or more thickness, and the graphene film formed on the substrate; (2) manufacture of composite, which involves forming the graphene film on a substrate; and (3) manufacture of graphene film, which involves peeling from the composite.