An electron emission cathode; an electron emission device, a flat display, a thermoelectric cooling device incorporating the same; and a method for producing the electron emission cathode

摘要

An electron emission cathode includes: an n-type semiconductor film including diamond particles partially projecting from a surface of the n-type semiconductor film; and an anode opposing the n-type semiconductor film with a vacuum interposed therebetween. Electrons are emitted by applying a voltage between the anode and the n-type semiconductor film. Furthermore, an electron emission cathode includes: a conductive film   a first semiconductor film of a first conductivity type formed on the conductive film;   an island-like second semiconductor film of a second conductivity type formed on the first semiconductor film; and   an anode opposing the conductive film with a vacuum interposed therebetween,   wherein electrons are emitted by applying a voltage between the anode and the second semiconductor film.;Furthermore, a thermoelectric cooling device is disclosed.