| abstract |
PROBLEM TO BE SOLVED: To provide a carbon thin body having a structure capable of producing a planar electron source by a simple method, a method for producing a carbon thin body, Provided is a field emission type electron source using a thin carbon material. SOLUTION: This is a thin-film carbon body 9 having a predetermined thickness t and having a front surface and a back surface, and a curved wall 3 is formed at least at a surface side 3c in plan view. They are connected to form a substantially mesh structure. |