The invention is to provide a producing method for an electron emitting
device of field emission type, having sufficient on/off characteristics
and capable of efficient electron emission at a low voltage. There is
provided a producing method for an electron emitting device including
steps of preparing a plurality of electroconductive particles each
covered with an insulation material having a thickness of 10 nm or less
at least on a part of a surface of the particle, and forming a dipole
layer on a surface of the insulation material covering each of the
plurality of electroconductive particles.