US2002195962A1PendingUtilityA1

Cold cathode

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Assignee: SI DIAMOND TECHN INCPriority: Oct 16, 1998Filed: May 13, 2002Published: Dec 26, 2002
Est. expiryOct 16, 2018(expired)· nominal 20-yr term from priority
Inventors:Zvi YanivRichard Lee FinkZhidan Li Tolt
B82Y 10/00H01J 2201/30457H01J 1/304B82Y 15/00
44
PatentIndex Score
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Claims

Abstract

A carbon film having an area of insulating material surrounded by an area of conducing material, and an area of material between the area of insulating material and the area of conducting material having a graded dielectric constant which varies from high to low from the area of insulating material to the area of conducting material.

Claims

exact text as granted — not AI-modified
What is claimed is:  
     
         1 . A carbon emitter comprising: 
 a substrate;    a carbon material on the substrate, wherein the carbon material includes at least one emission area having a plurality of grains with interfaces in between.

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