Implosion protection for shallow image display device having fro

Details Implosion protection for shallow image display device having fro Implosion protection for shallow image display device having fro

1985-12-13

1988-01-19

Boudreau, Leo H.

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

313495, 313422, 220 23A, 358246, H01J 2982, H01J 2986

Patent

active

047206578

ABSTRACT:
A shallow electronic image display device having a trough-shaped display screen of glass with a slightly convex exterior surface and a planar phosphor coated interior surface with a peripheral side wall terminating in an edge defining a common plane in sealing relation with a matingly configured peripheral flange of a tray-shaped metallic back case to form a chamber. Disposed within the chamber within the back case is an areal cathode structure in generally parallel relation with the interior surface of the screen with a plate-shaped electron beam control structure in parallel relation intermediate the interior surface and the areal cathode structure. A tensioned metal band encircles the side walls of the display screen to provide implosion protection.

REFERENCES:
patent: 3171056 (1965-02-01), Gabor
patent: 4377766 (1983-03-01), Lenz et al.

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