Color selection means for color display tube and method of makin

Details Color selection means for color display tube and method of makin Color selection means for color display tube and method of makin

1978-09-28

1980-04-08

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

29 2517, 313408, H01J 914, H01J 2907

Patent

active

041974824

ABSTRACT:
A color display tube having a quadrupole post-focusing electrode consisting of two crossing sets of parallel conductors, the first set of conductors consisting of wires and the second set of conductors consisting of metal stripes secured pairwise against each other and clamping the wires at the crossings, said wires being surrounded coaxially at the area of the crossings by a layer of insulation material, has the advantage that already at a comparatively low focusing voltage between the sets of conductors a sufficiently strong focusing influence is exerted on the electron beams.

REFERENCES:
patent: 3112421 (1963-11-01), Raibourn et al.
patent: 4059781 (1977-11-01), Van Alphen et al.
patent: 4066923 (1978-01-01), Van Esdonk
patent: 4107569 (1978-08-01), Ronde
patent: 4121131 (1978-10-01), Van Esdonk et al.
patent: 4135111 (1979-01-01), Verweel

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