Electric lamp and discharge devices – Discharge devices having a thermionic or emissive cathode
Patent
1996-12-23
1999-03-23
Ramsey, Kenneth J.
Electric lamp and discharge devices
Discharge devices having a thermionic or emissive cathode
445 50, H01J 902
Patent
active
058864598
ABSTRACT:
A method and system for manufacturing a field emission cathode having enhanced electron emission properties. The field emission cathode is prepared by providing a field emission substrate, an alkali metal alloy is formed at and below the exposed surface of the substrate, and a surface layer of alkali metal atoms are formed on the exposed surface by Gibbsian diffusion segregation action. If the monolayer, or surface layer, is desorbed, the diffusion action reestablishes the alkali metal surface layer thereby providing a stable alkali metal layer and enhanced electron emission characteristics.
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Article "Effects of Potassium and Lithium Metal Deposition on the Emission Characteristics of Splindt-type Thin-film Field Emission Microcathode Arrays," Talin, A.A., T.E. Feller and D.J. Devine, J. Vac. Sci. Technol. B., vol. 13, No. 2, pp. 448-451 (Mar./Apr. 1995).
Article "Beyond AMLCDs: Field Emission Displays?", Derbyshire, K., Solid State Technology (Nov. 1994) pp. 55-65.
Auciello Orlando H.
Gruen Dieter M.
Krauss Alan R.
McGuire Gary E.
Ramsey Kenneth J.
The University of Chicago
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