Panel for use in a cathode ray tube
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United States of America Patent
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May 22, 2007
Grant Date -
Jul 21, 2005
app pub date -
Jan 14, 2005
filing date -
Jan 15, 2004
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A panel for use in a cathode ray tube includes a face portion for displaying picture images, a skirt portion extending backward from a perimeter of the face portion and a blend radius portion joining the skirt portion to the face portion. The panel for use in a cathode ray tube has average outside curvature radius R (mm) of the face portion which satisfies the following relationship: R.gtoreq.10,000; wedge rate Td/Tc of the face portion which satisfies the following relationship: 2.0.ltoreq.Td/Tc.ltoreq.2.6; maximum compressive surface stress .sigma.C.sub.max (MPa) of the face portion and the skirt portion which satisfies the following relationship: -30.ltoreq..sigma.C.sub.max.ltoreq.-15; and tensile bending stress .sigma.bt (MPa) at inner surface of the blend radius portion which satisfies the following relationship: .sigma.bt.ltoreq.10.
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