Color picture tube having internal conductive coatings

Details Color picture tube having internal conductive coatings Color picture tube having internal conductive coatings

1988-05-17

1989-05-02

Wieder, Kenneth

Electric lamp and discharge devices

Cathode ray tube

Envelope

313477R, H01J 2988

Patent

active

048271853

ABSTRACT:
In a color-picture tube, the conductive coating on the inside of the cone is a suspension without organic constituents. The conductive coating on the inside of the neck, which is contiguous to the conductive coating on the inside of the cone, consists of the aforementioned suspension with an addition of organic constituents. A sharp and scratch-resistant boundary between the conductive coating in the neck and the uncoated area of the neck is thus obtained.

REFERENCES:
patent: 4124540 (1978-11-01), Foreman et al.
patent: 4550032 (1985-10-01), Compen et al.

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