Cathode-ray tube having cylindrical faceplate and shadow mask wi

Details Cathode-ray tube having cylindrical faceplate and shadow mask wi Cathode-ray tube having cylindrical faceplate and shadow mask wi

1983-02-25

1986-12-23

DeMeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313408, 313477R, H01J 2907

Patent

active

046314393

ABSTRACT:
A shadow mask type cathode-ray tube includes a rectangular faceplate having curvature along its minor axis but no curvature along its major axis. The shadow mask of the tube also has curvature along its minor axis and no curvature along its major axis. The mask is of a type of steel having a linear coefficient of thermal expansion of less than 3.times.10.sup.-6 .DELTA.l/l/.degree.C.

REFERENCES:
patent: 2307210 (1943-01-01), Goldsmith
patent: 2806162 (1957-09-01), McQuillen et al.
patent: 3931906 (1976-01-01), Bradu

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