Field emission cathode device and method of forming a field emission cathode device
AssigneeNCX Corporation
InventorJian Zhang
Life of this patent
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Abstract
A field emission cathode device and formation method involves a rotating field emission cathode including a field emission material deposited on a surface thereof, the field emission cathode rotating about an axis and being electrically connected to ground, and a planar gate electrode extending parallel to the surface of the rotating field emission cathode and defining a gap therebetween. A gate voltage source is electrically connected to the gate electrode and is arranged to interact therewith to generate an electric field, with the electric field inducing a portion of the surface of the rotating field emission cathode adjacent to the gate electrode to emit electrons from the field emission material toward and through the gate electrode.
Claims21
A field emission cathode device, comprising:
- a rotating field emission cathode including a field emission material deposited on a surface thereof, the field emission cathode rotating about an axis extending therethrough and being electrically connected to ground;
- a planar gate electrode extending parallel to a portion of the surface of the rotating field emission cathode and defining a gap therebetween;
- and
- a gate voltage source electrically connected to the gate electrode and arranged to interact therewith to generate an electric field between the gate electrode and the rotating field emission cathode, the electric field inducing the portion of the surface of the rotating field emission cathode adjacent to the gate electrode to emit electrons from the field emission material toward and through the gate electrode.
A method of forming a field emission cathode device, comprising:
- disposing a planar gate electrode adjacent and parallel to a portion of a surface of a rotating field emission cathode to define a gap therebetween, the rotating field emission cathode including a field emission material deposited on the surface thereof, being electrically connected to ground, and rotating about an axis extending therethrough;
- and
- interacting a gate voltage source with the gate electrode electrically connected thereto to generate an electric field between the gate electrode and the rotating field emission cathode, the electric field being arranged to induce the portion of the surface of the rotating field emission cathode adjacent to the gate electrode to emit electrons from the field emission material toward and through the gate electrode.
Dependencies are inferred from the claim text.