Glass front-panel

Details Glass front-panel Glass front-panel

1993-07-29

1994-10-18

O'Shea, Sandra L.

Electric lamp and discharge devices

Cathode ray tube

Envelope

313479, H01J 2986

Patent

active

053571657

ABSTRACT:
In a glass front-panel for a cathode ray tube, whose surface layer contains more potassium ions than those in the interior thereof, and whose flange is stuck to a rear panel to form a vacuum vessel, only the surface layer of the flange portion is substantially removed, or in a glass front-panel for a cathode ray tube, comprising an image displaying portion, a side wall portion and a flange portion, a belt-like electrode for making a gradient of electric potential easier is disposed on a surface of the side wall portion, so that the cathode ray tube is prevented from being damaged due to dielectric breakdown.

REFERENCES:
patent: 4916358 (1990-04-01), Bunton
English Abstract of German Publication No. 27,14,423 cited by Applicants.

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