The present invention provides a composition for forming an electron
emission source comprising a carbon-based material and a vehicle
comprising a resin component and a solvent component. The resin component
is a material that has less than 0.5 wt % of carbon deposits after
undergoing a heat treatment at 450.degree. C. under nitrogen atmosphere.
The present invention also provides a method of preparing an electron
emission source using the composition for forming an electron emission
source, and an electron emission source that is prepared using the
electron emission source. The electron emission source prepared using the
composition has a small amount of the carbon deposits which improves its
electric current density and lengthens its lifespan.