Electric lamp and discharge devices – With luminescent solid or liquid material – Vacuum-type tube
Reexamination Certificate
2005-05-10
2005-05-10
Williams, Joseph (Department: 2879)
Electric lamp and discharge devices
With luminescent solid or liquid material
Vacuum-type tube
C313S309000, C313S34600R, C428S408000, C428S698000
Reexamination Certificate
active
06891324
ABSTRACT:
A field emission cathode consisting of atomic-scale composite material comprising three atomic networks is proposed. The first and the second atomic networks penetrate into each other and form carbon-based stabilized dielectric medium and the third atomic network is a conductive network of metallic atoms. The atomic scale composite material may also contain conductive nano-crystals immersed into the carbon-based stabilized dielectric medium. The atomic-scale conductive network and nano-crystals reach the film surface and film edge forming nanometer scale field emission sites. They may be partially exposed by etching the other components of the cathode material thereby forming atomic-scale and/or nano-scale field emission metallic tips.The field emission cathode can be used as an efficient cold cathode in a variety of electronic devices, such as flat panel field emission displays, microwave diodes, triodes and more complex devices.
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Brown & Raysman Millstein Felder & Steiner LLP
Nanodynamics Inc.
Quarterman Kevin
Williams Joseph
LandOfFree
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