In process tension mask CRT panel with peripheral bodies

Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield

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Details

313406, 313407, 313408, 313477R, 220 21A, H01J 2982

Patent

active

052489140

ABSTRACT:
An annulus attached adjacent the edge planes of a CRT front panel provides screen area savings, and in the preferred embodiment, panel protection, strengthening, and anti-implosion properties. The annulus is preferably composed of a plurality of sections and incorporates a shadow mask support. The annulus is attached to the front panel before receiving the shadow mask becomes a part of the CRT envelope. In a preferred embodiment, the annulus is composed of ceramic and is x-ray shielded by an application of lead-based frit.

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