Carbon-metal nano-composite materials for field emission cathodes and devices
June 26, 2022. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod of making a molded field emission electron emitter employing a diamond coating Method of making a field emission electron source employing a diamond coating Method for forming diamond-like nanocomposite or doped-diamond-like nanocomposite films Composite fibers having a diamond surface Structure for enhancing electron emission from carbon-containing cathode Diamond-like metallic nanocomposites Field emission display devices, and field emission electron beam source and isolation structure components therefor Use of charged-particle tracks in fabricating gated electron-emitting devices Amorphic diamond film flat field emission cathode Field emission device having nanostructured emitters InventorAssigneeApplicationNo. 10179376 filed on 06/26/2002US Classes:313/495, Vacuum-type tube313/309, DISCHARGE DEVICES HAVING A MULTIPOINTED OR SERRATED EDGE ELECTRODE313/346R, Cathodes containing and/or coated with electron emissive material428/408, SELF-SUSTAINING CARBON MASS OR LAYER WITH IMPREGNANT OR OTHER LAYER428/698Carbide-, nitride-, or sulfide-containing layerExaminersPrimary: Williams, JosephAssistant: Quarterman, Kevin Attorney, Agent or FirmInternational ClassesH01J001/62H01J063/04 AbstractA field emission cathode consisting of atomic-scale composite material comprising three atomic networks is proposed. The first and the second atomic networks penetrate into each other and form carbon-based stabilized dielectric medium and the third atomic network is a conductive network of metallic atoms. The atomic scale composite material may also contain conductive nano-crystals immersed into the carbon-based stabilized dielectric medium. The atomic-scale conductive network and nano-crystals reach the film surface and film edge forming nanometer scale field emission sites. They may be partially exposed by etching the other components of the cathode material thereby forming atomic-scale and/or nano-scale field emission metallic tips.The field emission cathode can be used as an efficient cold cathode in a variety of electronic devices, such as flat panel field emission displays, microwave diodes, triodes and more complex devices.Field of SearchVacuum-type tubeDISCHARGE DEVICES HAVING A MULTIPOINTED OR SERRATED EDGE ELECTRODE DISCHARGE DEVICES HAVING A THERMIONIC OR EMISSIVE CATHODE DISCHARGE DEVICES HAVING AN ELECTRODE OF PARTICULAR MATERIAL Point source cathodes Cathodes containing and/or coated with electron emissive material Multipointed or serrated edge electrode SELF-SUSTAINING CARBON MASS OR LAYER WITH IMPREGNANT OR OTHER LAYER Carbide-, nitride-, or sulfide-containing layer Including components having same physical characteristic in differing degree | |
