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US 6,239,547 B1Granted
Electron-emitting source and method of manufacturing the same
AssigneeIse Electronics Corporation
InventorsSashiro Uemura, Takeshi Nagasako, Junko Yotani, Mitsuaki Morikawa, Yahachi Saito
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Abstract
An electron-emitting source of this invention includes at least a carbon nanotube formed from a columnar graphite layer. Electron are emitted from the tip of the carbon nanotube.
Claims11
An electron-emitting source comprising:
- a carbon nanotube formed from a columnar graphite layer formed from a multilayer graphite column whose tip is open.
An electron-emitting source comprising:
- a conductive substrate (406a, 507, 601, 701, 904);
- a carbon nanotube (132) formed from a columnar graphite layer formed from a multilayer graphite column whose tip is open, the longitudinal direction of said carbon nanotube coinciding with a line of the plane of said conductive substrate (406a, 507, 601, 701, 904):
- and
- a conductive adhesive (422, 508, 602, 710a, 905) prepared between said carbon nanotube and said substrate so that said carbon nanotube is adhered to the substrate (406a, 507, 601, 701, 904).
1 more element
An electron-emitting source comprising:
- a central portion made of a plurality of needle-like structures whose longitudinal directions coincide with the same direction and each of which is an aggregate of carbon nanotubes whose longitudinal directions coincide with the same direction and which are formed from a columnar graphite layer;
- and polycrystalline graphite covering the central portion.
An electron-emitting source comprising:
- an aggregate obtained by bundling a plurality of needle-like structures each as an aggregate of carbon nanotubes whose longitudinal directions coincide with the same direction and which are formed from a columnar graphite layer formed from a multilayer graphite column whose tip is open, while tips of the needle-like structures are aligned.
An electron-emitting source comprising:
- a carbon nanotube (132) formed from a columnar graphite layer formed from a multilayer graphite column whose tip is open;
- a cathode electrode on which said carbon nanotubes is fixed to the cathode electrode with a conductive adhesive;
- and
- an anode electrode spaced from said cathode electrode.
1 more element
Dependencies are inferred from the claim text.