Color display tube window, skirt and mount for color selection m

Details Color display tube window, skirt and mount for color selection m Color display tube window, skirt and mount for color selection m

1984-05-04

1987-01-27

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313477R, 220 21A, H01J 2907, H01J 2924

Patent

active

046396365

ABSTRACT:
A color 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 luminescent material of the display screen and the outer surface of the skirt throughout the circumference of the window is substantially equally large and for r.ltoreq.10 mm satisfies the condition that (D-d)/r.ltoreq.1.

REFERENCES:
patent: 4358702 (1982-11-01), Gijrath et al.
Journal of Electronic Engineering; Aug. 1982; p. 24 (Japan); Toshiba's New CRT Realizes Almost Flat TV Screen.

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