Electric lamp and discharge devices – Discharge devices having a thermionic or emissive cathode
Reexamination Certificate
2005-07-12
2005-07-12
Williams, Joseph (Department: 2879)
Electric lamp and discharge devices
Discharge devices having a thermionic or emissive cathode
C313S495000
Reexamination Certificate
active
06917146
ABSTRACT:
An electron-emitting device includes a substrate, first and second carbon films disposed so as to have a first gap between the first and second carbon films on a surface of the substrate, and first and second electrodes electrically connected with the first and the second carbon films respectively, wherein the carbon film has a region showing orientation, and a direction of the orientation is in an approximately parallel direction along the substrate surface. Thereby, it is possible to improve thermal and chemical stability of a carbon film and stabilize good electron emission characteristics over a long period.
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Aiba Toshiaki
Motoi Taiko
Nakamura Kumi
Shibata Masaaki
Ueno Rie
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