▎ 摘　　要

NOVELTY - The method involves forming (S10) a graphene oxide layer on a support substrate. A graphene oxide dispersion layer is formed (S20) on the support substrate by coating graphene oxide. The graphene oxide is provided with two graphene oxides, where size of the first graphene oxide and the second graphene oxide are 50 nm and 1 μ m, respectively. A detachable layer is produced by coating the graphene oxide on the substrate. The support substrate is separated from a flexible substrate, where the flexible substrate is made of material selected from polyimide, polyester, polyvinyl, polycarbonate, polyethylene, polyacetate and polyethersulfone. USE - Method for producing detachable layer of information display device. ADVANTAGE - The method enables economical manufacture of detachable layer having excellent light transmittance, without using expensive laser lift-off equipment. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: a desorption layer; and an information display element. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating a method for manufacturing a detachable layer. S10Step for forming a graphene oxide layer on a support substrate S20Step for forming a graphene oxide dispersion layer on the support substrate by coating graphene oxide