Panel for wide-angle flat cathode ray tubes
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United States of America Patent
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Issued Date -
Sep 21, 2006
app pub date -
Feb 3, 2006
filing date -
Mar 14, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Disclosed herein is a panel for wide-angle flat cathode ray tubes. The panel includes a face part formed at the front part thereof for displaying a picture, a skirt part having a seal edge joined with the funnel, and a blend round part connected between the face part and the skirt part. On the assumption that the compression stress of a center part, which is the center region of the face part, is .sigma.1, and the compression stress of an edge part, which is the edge region of the face part adjacent to the blend round part, is .sigma.2, the panel is constructed such that the following inequality is satisfied: 1.5.ltoreq..sigma.2/.sigma.1.ltoreq.2.33. Consequently, the present invention has the effect of satisfying the safety of the explosion-resistance characteristic and compensating for the reduction of vacuum strength, which is caused when the deflection angle of the cathode ray tube is increased and the panel is flattened.
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