Shadow mask for color cathode ray tube shaped to minimize doming

Details Shadow mask for color cathode ray tube shaped to minimize doming Shadow mask for color cathode ray tube shaped to minimize doming

1985-03-12

1988-02-23

Moore, David K.

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313403, H01J 2907

Patent

active

047272805

ABSTRACT:
A shadow mask for a color cathode ray tube has grooves formed in the curved surface in such a manner that the bending strength within the plane having a larger radius of curvature becomes greater than the bending strength within the plane having a smaller radius of curvature, thereby increasing the effective radius of curvature of the curved surface.

REFERENCES:
patent: 3753663 (1973-08-01), Black
patent: 3916243 (1975-10-01), Brown
patent: 4136300 (1979-01-01), Morrell
"Recent Advances in Color Picture Tubes", pp. 35-37 of Advance in Image Pickup and Display, vol. 6, 1983 by Academic Press Inc.
Contoured-Line Screens for Color Picture Tubes (RCA Engineering 25-2, Aug./Sep. 1979).
A Structure Analytical Study on Shadow Mask Thermal Deformation of Color CRT (SID Japan Display '83 Report No. 1.3).
A Newly Designed Shadow Mask for Color Picture Tube (SID Japan Display '83 Report No. 1.4).

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