Method for and product of electron emissive layer and multibeam

Details Method for and product of electron emissive layer and multibeam Method for and product of electron emissive layer and multibeam

1985-05-10

1987-02-03

Buczinski, S. C.

Electric lamp and discharge devices

Discharging devices with apertured electrode interposed...

Plural cathodes

313304, 313309, 313409, H01J 146, H01J 2110, H01J 2950

Patent

active

H00002160

ABSTRACT:
An encapsulated planar cathode structure is formed for a vacuum tube. A multibeam cathode ray tube is obtained by heating in the CRT such a structure with a plurality of separated electron emissive layers to remove the encapsulation material. Positive photoresist technology is utilized: for obtaining delineated apertures on a planar metallization layer supported by an insulating substrate into which needle-shaped carbonate particles are deposited electrophoretically normal to the metallization; and for encapsulating the resultant cathodes.

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