Method of operating a flat CRT display
AssigneeSI Diamond Technology, Inc.
InventorsZvi Yaniv, Ronald Charles Robinder
Life of this patent
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Abstract
A plurality of field emission device cathodes each generate emission of electrons, which are then controlled and focused using various electrodes to produce an electron beam. Horizontal and vertical deflection techniques, similar to those used within a cathode ray tube, operate to scan the individual electron beams onto portions of a phosphor screen in order to generate images. The use of the plurality of field emission cathodes provides for a flatter screen depth than possible with a typical cathode ray tube.
Claims9
A method of operating a field emission display, comprising the steps of:
- providing a substrate with a plurality of addressable field emitters;
- positioning a display screen a distance from the substrate, wherein the display screen has a plurality of partitions each comprising a plurality of pixels, wherein each of the plurality of partitions are positioned opposite one of the plurality of addressable field emitters;
- forming the electrons, emitted from the individually addressed each one of the plurality of field emitters, into an electron beam;
- and
- scanning the electron beam, formed from the electrons emitted from the individually addressed each one of the plurality of field emitters, to each of the plurality of pixels within the partition positioned opposite of the individually addressed each one of the plurality of field emitters.
A method of operating a field emitter device comprising the steps of:
- providing a cold cathode;
- positioning a display screen a distance from the cold cathode, wherein the display screen is operable to emit photons in response to bombardment by electrons, wherein the display screen further comprises a plurality of pixels;
- causing the cold cathode to go from a non-emitting state to an emitting state resulting in an emission of electrons;
- forming the electrons emitted by the cold cathode into an electron beam;
- and
- scanning the electron beam to each of the plurality of pixels.
Dependencies are inferred from the claim text.