▎ 摘　　要

NOVELTY - A graphene oxide field emission flat plate display instrument preparing method involves coating a layer of photoresist on a plane substrate, patterning the photoresist, and exposing an area needing preparation of a field emission point on the substrate, plating a metal film, carrying out secondary sedimentation of nickel nanometer particles on the metal film through magnetic field assistance, and subjecting the resultant sample to heat treatment in a vacuum furnace. The sample surface is deposited with layer of graphene oxide. The residual photoresist is removed. USE - Method for preparing graphene oxide field emission flat plate display instrument. ADVANTAGE - The method enables preparing the graphene oxide field emission flat plate display instrument with field emitter structure, stable emission currents, small driving voltage and high electron emission efficiency. DETAILED DESCRIPTION - A graphene oxide field emission flat plate display instrument preparing method involves coating a layer of photoresist on a plane substrate, patterning the photoresist, and exposing an area needing preparation of a field emission point on the substrate, plating a metal film, carrying out secondary sedimentation of nickel nanometer particles on the metal film through magnetic field assistance, and subjecting the resultant sample to heat treatment in a vacuum furnace. The sample surface is deposited with layer of graphene oxide. The residual photoresist is removed to obtain a field emission lattice, followed by wiring on the field emission lattice, followed by placing an indium tin oxide glass sheet plated with fluorescent powder in parallel above the sample, and preparing a field emission flat plate module, where the sample and glass are spaced at a certain interval by use of an insulating material and forming a peripheral circuit by use of a single-chip microcomputer and a shift register to realize screen display.