Amorphic diamond film flat field emission cathode
AssigneeMicroelectronics and Computer Technology Corporation
InventorsNalin Kumar, Chenggang Xie
Life of this patent
Estimating the term…
Abstract
A field emission cathode for use in flat panel displays is disclosed comprising a layer of conductive material and a layer of amorphic diamond film, functioning as a low effective work-function material, deposited over the conductive material to form emission sites. The emission sites each contain at least two sub-regions having differing electron affinities. Use of the cathode to form a computer screen is also disclosed along with the use of the cathode to form a fluorescent light source.
Claims6
A display device comprising a plurality of cathodes each selectively controllable to form images on a surface of a screen, said cathodes each comprising:
- a layer of conductive material;
- and
- a layer of low effective work-function material deposited over said conductive material, said low work-function material having an emission surface comprising a plurality of distributed localized electron emission sites, wherein said emission sites at said emission surface are relatively flat.
Dependencies are inferred from the claim text.