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US 5,666,025 AGranted
Flat-panel display containing structure for enhancing electron emission from carbon-containing cathode
AssigneeCandescent Technologies Corporation
InventorsMichael W. Geis, John M. Macaulay, Jonathan C. Twichell
Life of this patent
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Abstract
A flat-panel display contains an emissive cathode structure and a generally flat encapsulating body that surrounds the cathode structure to form a sealed enclosure. The cathode structure contains electronegative atoms (22), which consist of oxygen and/or fluorine, chemically bonded to a carbon-containing cathode (10). Atoms (24R) of electropositive metal are chemically bonded to the electronegative atoms.
Claims13
A flat-panel display comprising:
- an emissive cathode structure that comprises (a) a carbon-containing electron-emissive cathode, (b) electronegative atoms chemically bonded to the cathode, the electronegative atoms comprising at least one of oxygen and fluorine, and (c) atoms of electropositive metal chemically bonded to the electronegative atoms;
- and
- a generally flat encapsulating body that surrounds the emissive cathode structure to form a highly evacuated sealed enclosure.
Dependencies are inferred from the claim text.