Low-temperature cathode having an emissive nanostructure

Details Low-temperature cathode having an emissive nanostructure Low-temperature cathode having an emissive nanostructure

1996-04-30

1999-02-02

Patel, Ashok

Electric lamp and discharge devices

Electrode and shield structures

Cathodes containing and/or coated with electron emissive...

313346R, 313337, 313270, H01J 114

Patent

active

058669752

ABSTRACT:
An electric discharge tube or discharge lamp, in particular a flat-panel display screen, includes one or more low-temperature cathodes having a holder, which, optionally, is provided with a heating or cooling element, a conductive bottom layer which is applied to the holder, optionally a substrate with dispenser material, and a top coating of ultrafine particles having a nanostructure. The top coating has a surface layer consisting of an emitter complex formed from an emission material comprising several components. The cathodes have a high reliability and a long service life under a normal working load. The emission is stable, which contributes to a constant picture quality throughout the life of the discharge lamp or discharge tube. The discharge tubes or discharge lamps in accordance with the invention have short switching times and the advantage that their construction has been simplified and that their energy consumption is low. A method of manufacturing low-temperature cathodes in accordance with the invention is described.

REFERENCES:
patent: 4160191 (1979-07-01), Hausfeld
patent: 4810926 (1989-03-01), Schwarz et al.
patent: 5666022 (1997-09-01), Deckers et al.

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