Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
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).
Mitsubishi Denki & Kabushiki Kaisha
Moore David K.
Wieder K.
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