Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1987-01-23
1988-05-17
Moore, David K.
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
313408, H01J 2907, H01J 2982
Patent
active
047453303
ABSTRACT:
A faceplate assembly for a color cathode ray tube includes a glass faceplate having on its inner surface a centrally disposed phosphor screen. A foil shadow mask is mounted in tension on a mask support structure located on opposed sides of the screen and secured to the inner surface. The mask support structure has a metal cap for receiving and mounting the shadow mask in tension. The mask support structure according to the invention includes at least two adhered layers of ceramic having different coefficients of thermal expansion effective to match the different coefficients of thermal expansion of the metal of said cap and the glass of said faceplate.
REFERENCES:
patent: 4473772 (1984-09-01), de Keijer
patent: 4595857 (1986-06-01), Rowe et al.
patent: 4614892 (1986-09-01), Palac
Robinder et al., "A High-Brightness Shadow-Mask Color CRT for Cockpit Displays", 1983 symposium, Society for Information Display.
Fyler et al., "The CBS Colortron: A Color Picture Tube of Advanced Design", Proceedings of the Institute of Radio Engineers (IRE), Jan. 1954.
TEKT8100, "Avionics Color Cathode Ray Tube", Tektronix, 1983.
Capek Raymond G.
Knowlton Jennifer M.
Moore David K.
Wieder K.
Zenith Electronics Corporation
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