Electric lamp and discharge devices – Discharge devices having a thermionic or emissive cathode
Patent
1996-04-18
1998-10-13
Williams, Hezron E.
Electric lamp and discharge devices
Discharge devices having a thermionic or emissive cathode
313495, H01J 130
Patent
active
058216790
ABSTRACT:
Concave portions are formed, in a matrix fashion, in a substrate formed of metal or semiconductor. An electron emission layer made of material having small work function such as a diamond thin film is formed on the bottom portion of the concave portion. A protruding portion of the substrate serves as a beam formation electrode. Divergence of electrons can be suppressed with the beam formation electrode. A gate electrode for drawing out the electrons is formed above the beam formation electrode.
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N. Kumar et al., "Development of Nano-Crystalline Diamond-Based Field-Emission Displays", SID 94 Digest, pp. 43-46.
Larkin Daniel S.
NEC Corporation
Williams Hezron E.
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