Electron-gun system

Details Electron-gun system Electron-gun system

1988-05-31

1990-07-17

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313448, H01J 2951

Patent

active

049423347

ABSTRACT:
In a cathode-ray tube with a thick grid No. 2 (24) in the electron-gun system, current transfer into grid No. 2 (24) may result in a lack of picture sharpness. To avoid this error, the aperture (4) in grid No. 2 (24) has a widening (6) of conical shape or stepped diameter.

REFERENCES:
patent: 3295001 (1966-12-01), Burdick
patent: 4234814 (1980-11-01), Chen et al.
patent: 4500808 (1985-02-01), McCandless
patent: 4514659 (1985-04-01), Chen
patent: 4520292 (1985-05-01), van Hekken et al.
patent: 4523123 (1985-06-01), Chen
patent: 4535266 (1985-08-01), Say
patent: 4608515 (1986-08-01), Chen

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