Focusing electrode structure

Details Focusing electrode structure Focusing electrode structure

1997-10-21

1999-11-30

Patel, Vip

Electric lamp and discharge devices

Cathode ray tube

Plural beam generating or control

313412, 313460, H01J 2951

Patent

active

059948272

ABSTRACT:
A focusing electrode in an electron gun for a color cathode ray tube or high definition industrial picture tube includes a first and second focusing electrodes. A recess portion in one end of the first focusing electrode is oriented to face burring parts of the second focusing electrode. An electron beam and a surrounding portion pass through holes in the first focusing electrode to reduce the space between the first and second focusing electrodes. This improves the static convergence drift.

REFERENCES:
patent: 4887009 (1989-12-01), Bloom et al.
patent: 5384512 (1995-01-01), Kamohara et al.

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