▎ 摘　　要

NOVELTY - The device has a metal substrate (1) whose two sides are provided with small holes (11). A fixing device is provided with fixed wire (3) connected through small holes of the metal substrate. The metal substrate is fixed on the quartz rolling boat (2). An air inlet pipe is uniformly distributed with the air outlet ports, and is surrounded by the quartz rolling boat. USE - Device for producing large area graphene (claimed) used for transistor, touch screen and gene sequencing device. ADVANTAGE - The air pressure is uniformly maintained in the diffusion furnace. The production of large area graphene is performed in easy manner, and the quality of the large area graphene is improved. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for producing large area graphene. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the large area graphene production device. Metal substrate (1) Quartz rolling boat (2) Fixed wire (3) Cutting binding strip (4) Small hole of metal substrate (11)