▎ 摘　　要

NOVELTY - The thin film device has a target portion that is attached to surface of the graphene thin film. The thickness of the graphene film is 0.34nm-4nm. The preset image or predetermined pattern is formed at the graphene thin film. The target portion is provided with core, or electrode or screen or transistor component. USE - Graphene thin film for high power electronic device. ADVANTAGE - The surfaces of the target portion are closed, thus the cooling effect is enhanced. The high power dissipation and the high density packaging are achieved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing graphene thin film. DESCRIPTION OF DRAWING(S) - The drawing shows a graphical view illustrating the result of the graphene thin film attached to the core and not attached to the core. (Drawing includes non-English language text)