▎ 摘　　要

NOVELTY - The device has a control device that passes through an axial side wall of an outer shell and extends into the inner part of the outer shell. An etching device (2) comprises an etching plate (21) that is fixedly connected with the axial inner side of the outer shell. The inner side bottom surface of the etching plate is provided with several equidistantly distributed strip-shaped convex grooves (22) on the axial direction of the etching plate. The etching plate is provided with multiple uniformly distributed through-holes. The inner side of the bottom end portion of the convex grooves is fixedly installed with a photosensitive resistor. The etching plate is provided with an irradiation lamp (25). The inner side bottom surface of the etching plate is concave arc surface. The central position of the bottom side surface of the etching plate is provided with a cylindrical hole. USE - Graphene thin film etching device. ADVANTAGE - The graphene film etching device is provided with a strip-shaped convex groove, so that the bubble generated by the injection etching liquid can be discharged outwards through the gap between the adjacent long convex grooves, so as to reach the effect of stopping bubble stacking between the graphene film and the etching liquid, thus solving the problem that the etching effect caused by bubble accumulation is not good. DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of an etching disk. Etching device (2) Etching plate (21) Strip-shaped convex groove (22) Irradiation lamp (25)