Electron emitting element and method for producing the same

A method for producing an electron emitting element which includes:

• a first electrode;
• an insulating fine particle layer formed on the first electrode;
• and a second electrode formed on the insulating fine particle layer, wherein the insulating fine particle layer comprising first insulating fine particles and second insulating fine particles larger than the first insulating fine particles, a surface of the insulating fine particle layer having a projection formed from the second insulating fine particles, electrons provided from the first electrode being accelerated in the insulating fine particle layer to be emitted from the second electrode via the projection, when a voltage is applied between the first electrode and the second electrode,
• the method comprising the steps of:
• forming the insulating fine particle layer composed of the first and second insulating fine particles on the first electrode;
• and forming the second electrode on the insulating fine particle layer and opposite the first electrode,
• wherein the step of forming the insulating fine particle layer includes a step of applying a dispersion of the first and second insulating fine particles onto the first electrode.