In-line plural beams cathode ray tube having color phosphor elem

Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield

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313470, H01J 2930, H01J 3120

Patent

active

040705960

ABSTRACT:
A color cathode ray tube having color phosphor element strips spaced from each other by intervening light absorbing areas (black strips) which comprises an envelope; a faceplate; a phosphor screen formed on the inner wall of the faceplate; an electron gun unit so arranged in the neck portion of said cathode ray tube envelope as to emit in-line plural electron beams; and a slit-shaped aperture mask facing the faceplate, wherein the multicolor phosphor screen consists of a plurality of groups each consisting of several color phosphor element strips spaced from each other by a plurality of intervening light absorbing strips; and there is disposed adjacent to said color phosphor element strips a slit-shaped aperture mask perforated with a plurality of beam passing holes.

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patent: 3731129 (1973-05-01), Tsuneta et al.
patent: 3800176 (1974-03-01), Gross et al.
patent: 3889145 (1975-06-01), Suzuki et al.

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