H - Electricity – 01 – J
Patent
H - Electricity
01
J
H01J 1/16 (2006.01) H01J 3/02 (2006.01) H01J 9/02 (2006.01) H01J 31/12 (2006.01)
Patent
CA 2060809
Abstract of the Disclosure A field emitter includes an electron emitting structure spaced from an anode structure, with the intervening gap being substantially evacuated. The electron emitting structure includes a first electrically conductive layer spaced by an insulating layer from a second conductive layer, and a generally circular aperture disposed through the layers. The anode structure includes an electrically conductive layer. Electrostatic forces, provided from a potential applied between the first conductive layer and the anode structure, causes an electron beam to be drawn from a cathode provided by a peripheral edge portion of the first conductive layer within the aperture onto an adjacent surface portion of the anode structure. Such field emission occurs under the control of a potential applied between the first and second conductive layers of the electron emitting structure with the second conductive layer functioning as a control electrode of the emitting structure. The anode structure converts the electrical energy from the electron bombardment into visible light energy. In one embodiment, potential applied to a third conductive layer of the emitting structure serves to focus the electron stream on the anode structure. Methods of manufacturing the disclosed electron emitting structures are also described.
Feist Wolfgang M.
Raytheon Company
Smart & Biggar
LandOfFree
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