Cathode ray tube having an improved cathode structure

Details Cathode ray tube having an improved cathode structure Cathode ray tube having an improved cathode structure

1998-05-08

2000-10-10

Patel, Vip

Electric lamp and discharge devices

Nonrepairable

313412, H01J 2950

Patent

active

061304999

ABSTRACT:
A color cathode ray tube includes an electron gun having a plurality of cathodes and a cup-shaped first grid electrode spaced from the cathodes. The plurality of cathodes are supported within a plurality of eyelets corresponding to the number of the cathodes, respectively. The eyelets are disposed within and bonded to a tubular cathode support by bonding glass contained within the tubular cathode support, and satisfy the following relationship: (1.4 times a beam spacing S between two electron beams from the two adjacent cathodes divided by an outside radius of the eyelets-1.4 mm).gtoreq.(a height of the eyelets protruding beyond the top surface of the bonding glass).gtoreq.(0.98 times the beam spacing S divided by the outside radius of the eyelets-1.4 mm).

REFERENCES:
patent: 5099170 (1992-03-01), Koizumi
patent: 5723938 (1998-03-01), Kato et al.
patent: 5734235 (1998-03-01), Noguchi
patent: 5763993 (1998-06-01), Park et al.
patent: 5798603 (1998-08-01), Tsuruoka et al.

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