Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1986-12-16
1988-05-17
Moore, David K.
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
313407, 313408, H01J 2981
Patent
active
047453281
ABSTRACT:
An improved front assembly for a color cathode ray tube having a tension foil shadow mask is disclosed. The faceplate of the tube has on its inner surface a centrally disposed phosphor screen surrounded by a peripheral sealing area adapted to mate with a funnel. The assembly includes a shadow mask support structure for securing a shadow mask in tension on the structure and spacing the shadow mask from the screen. The support structure is provided by a support assembly including an inverted channel member to facilitate securing the shadow mask to the support structure. A stiffening core is secured within the channel member. A rigid bar may be secured to the top of the channel member for securing the shadow mask thereto.
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Robinder et al., "A High-Brightness Shadow Mask Color CRT for Cockpit Displays", Tektronix Inc., Beaverton, OR, 1983.
Fyler et al., "The CBS Colortron: A Color Picture Tube of Advanced Design", Proceedings of the IRE.
Moore David K.
O'Shea Sandra L.
Zenith Electronics Corporation
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