Cathode-ray tube with its display front protected from undesirab

Details Cathode-ray tube with its display front protected from undesirab Cathode-ray tube with its display front protected from undesirab

1989-08-29

1991-06-18

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Envelope

313478, 358247, H01J 2987, H04N 565

Patent

active

050254901

ABSTRACT:
A cathode-ray tube has an electrically conductive film formed over the surface of the panel portion of the tube, a transparent, electrical insulating layer formed on the conductive film and an electrode unit formed on the electrical insulating layer. The electrode unit is connected with a common potential line. A capacitor formed between the anode of the cathode-ray tube and the conductive film and a capacitor formed by the conductive film insulating layer and the electrode unit are electrically in series connection as viewed from a source for the voltage to be applied to the anode.

REFERENCES:
patent: 3996491 (1976-12-01), Larson et al.
patent: 4031553 (1977-06-01), Sumigoshi et al.
patent: 4804883 (1989-02-01), Muller et al.

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