Emitter material having a plurlarity of grains with interfaces in between
December 2, 2019. 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 ReferencesField emission structures produced on macro-grain polysilicon substrates Light emission element using a polycrystalline semiconductor material of III-V group compound Method of making wide band gap field emitter Amorphic diamond film flat field emission cathode Amorphic diamond film flat field emission cathode Multi-layer carbon-based coatings for field emission Field emitter with wide band gap emission areas and method of using Field emission devices employing diamond particle emitters Field emission lamp structures Field emission device Patent #: 6064148 InventorsApplicationNo. 453304 filed on 12/02/1999US Classes:315/169.3, Electroluminescent device313/310, DISCHARGE DEVICES HAVING A THERMIONIC OR EMISSIVE CATHODE313/336Point source cathodesExaminersPrimary: Philogene, HaissaAttorney, Agent or FirmInternational ClassG09G 003/10AbstractA carbon film having an area of insulating material surrounded by an area of conducing material, and an area of material between the area of insulating material and the area of conducting material having a graded dielectric constant which varies from high to low from the area of insulating material to the area of conducting material.Other References
Field of SearchElectroluminescent deviceDiverse-type energizing or bias supplies to different electrodes Vacuum-type tube DISCHARGE DEVICES HAVING A MULTIPOINTED OR SERRATED EDGE ELECTRODE DISCHARGE DEVICES HAVING A THERMIONIC OR EMISSIVE CATHODE Point source cathodes Filament or wire shield or electrode Multipointed or serrated edge electrode | |
