Patent ID: 7102277
Filing Date: 2006-09-05
Classification: B82Y,H01J,Y10S

Abstract:
1. A field emission cold cathode device of a lateral type comprising: a support substrate; arrays of cathode electrodes and arrays of gate electrodes alternately disposed on the support substrate to define a plurality of pairs of a cathode electrode and a gate electrode in a matrix format, such that the cathode electrode and the gate electrode of each of the plurality of pairs have a first side surface and a second side surface, respectively, which oppose each other with a gap interposed therebetween; an emitter disposed on the first side surface to oppose the second surface and configured to emit electrons, the emitter comprising a metal layer formed on the cathode electrode, and a plurality of granular or rod-shaped micro-bodies supported by the metal layer in a dispersed state and consisting essentially of a metal material; and a gate projection disposed on the second side surface to oppose the first side surface, the gate projection comprising a gate metal layer consisting essentially of the same metal material as that of the metal layer, and a plurality of gate micro-bodies supported by the gate metal layer in a dispersed state and consisting essentially of the same metal material as that of the micro-bodies, wherein the metal material is selected from the group consisting of Mo, Ta, W, Ta, Ni, Cr, Au, Ag, Pd, Cu, Al, Sn, Pt, Ti, and Fe.