Undulating support structure for tension shadow mask
AssigneeZenith Electronics Corporation
InventorJames R. Fendley
Life of this patent
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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. A shadow mask support structure is secured to the faceplate for securing a shadow mask in tension on the structure and spacing the shadow mask from the screen. The support structure includes an undulated member defining peaks and valleys. The valleys are flattened in a common plane and provide means for securing the support structure to the faceplate. The peaks are flattened in a common plane and provide means for securing the shadow mask to the support structure.
Claims20
A front assembly for a color cathode ray tube including a faceplate having on its inner surface a centrally disposed phosphor screen surrounded by a peripheral area adapted to mate with a funnel, said assembly including a shadow mask support structure for securing a shadow mask in tension on the support structure and spacing the shadow mask from the screen, the support structure comprising an undulated member defining peaks and valleys, the valleys providing means for securing the support structure to the faceplate, and the peaks providing means for securing the shadow mask to the support structure.
A front assembly for a color cathode ray tube including a faceplate having on its inner surface a centrally disposed phosphor screen surrounded by a peripheral area adapted to mate with a funnel, said assembly including a shadow mask support structure for securing a shadow mask in tension on the support structure and spacing the shadow mask from the screen, the support structure comprising an undulated metal member defining peaks and valleys, the valleys being flattened in a common plane to provide means for securing the support structure to the faceplate, and the peaks being flattened in a common plane to provide means for securing the shadow mask to the support structure.
A front assembly for a color cathode ray tube including a faceplate having on its inner surface a centrally disposed phosphor screen, said assembly including a shadow mask support structure characterized by an undulated cross-section and substantially surrounding the phosphor screen for supporting the shadow mask in tension upon said undulated structure, and means for securing said undulated structure to the faceplate.
Dependencies are inferred from the claim text.