Patent ID: 7503822

Claim:
An electron-emitting device manufacturing apparatus for forming a surface conduction election-emitting element by a conductive thin film, said electron-emitting device manufacturing apparatus comprising: a discharge head of a piezo-jet type using a piezoelectric element, said discharge head having discharge opening and jetting a solution that includes micro-particle material for forming the conductive thin film, and said discharge head jetting the solution on the area between the electrodes formed on a substrate of the electron-emitting device, at a speed between 6 m/s and 18 m/s and in a range from a few picoliters to a few tens of picoliters and vaporizing a volatile component in a solution dot pattern after the droplet is jetted on the substrate so that a solid content remaining on the substrate as its thickness is in a range from 10 Å to 500 Å, wherein the solution having micro-particle dispersed in liquid satisfies a relationship of 0.0002≦Dp/Do≦0.01 where Dp denotes a diameter of the micro-particle and Do denotes a diameter of the discharge opening.