Color cathode ray tube with reduced halo

Details Color cathode ray tube with reduced halo Color cathode ray tube with reduced halo

1994-06-21

1997-06-10

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Ray generating or control

313449, 313414, H01J 2956

Patent

active

056379560

ABSTRACT:
An electron beam aperture of a second grid electrode of a color cathode ray tube is a rectangular hole formed in the center of a slit-like recess having longer sides extending in the horizontal direction. The vertical width of the rectangular hole is greater than the width of each shorter side of the slit-like recess.

REFERENCES:
patent: 4242613 (1980-12-01), Brambring et al.
patent: 4251747 (1981-02-01), Burdick
patent: 4358703 (1982-11-01), Bijma et al.
patent: 4886998 (1989-12-01), Endo

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