Colour display tube and display device comprising such a...

Details Colour display tube and display device comprising such a... Colour display tube and display device comprising such a...

H - Electricity

01

J

313/35.19

H01J 29/86 (2006.01) H01J 29/06 (2006.01) H01J 29/07 (2006.01)

Patent

CA 1220809

PHN 10.875 14 26.6.1984 ABSTRACT: "Colour display tube and display device comprising such a colour display tube". A colour display tube comprising a display window which changes into a skirt which. is substantially parallel to the axis of the tube via a strongly curved part. The inner surface of the window changes into the inner surface of the skirt via a strongly curved surface having a radius of curvature r. The outer surface of the window changes into the outer surface of the skirt via a strongly curved surface. The display window comprises on its inside a substantially rectangular display screen and a shadow mask at a short distance in front of the display screen, which mask is supported in the corners of the display window by suspension means fixed in the skirt. In the proximity of the strongly curved transition the skirt has a thickness d. In a plane perpendicular to the tube axis the distance D between the boundary of the lumines- cent material of the display screen and the outer surface of the skirt around the periphery of the window is substantially equally large and for r ? 10 mm satisfies the condition that Image

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