Display tube and picture display device comprising such a...

Details Display tube and picture display device comprising such a... Display tube and picture display device comprising such a...

H - Electricity

01

J

313/35.19

H01J 29/86 (2006.01) H01J 29/87 (2006.01)

Patent

CA 1218406

ABSTRACT: Display tube and picture display device comprising such a display tube. If in a display tube comprising an envelope consisting of a neck, a cone, and a flat or slightly curved, substantially rectangular display window which changes into a skirt which is substantially parallel to the axis of the envelope via a strongly curved part and which display window comprises on its inside a substantially rectangular display screen, the display window and the skirt near the strongly curved part and over the whole circumference of the display window have a thickness d which to an approximation satisfies the following relationship: d = C D0.8 R0.2 wherein C is a constant between 0.015 and 0.025, D is the diagonal of the inner surface of the display window, and R is the radius of the curvature of the inner surface of the display window, the tube is implosion-safe and a narrow dark edge which is equally wide substantially everywhere is obtained around the display screen.

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