Color cathode ray tube
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United States of America Patent
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N/A
Issued Date -
Mar 10, 2005
app pub date -
May 28, 2004
filing date -
Sep 5, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention relates to a color cathode ray tube and more specifically to a color cathode ray tube in which mechanical stress due to internal pressure made by evacuation is decreased. According to an aspect of the present invention, a cathode ray tube comprises a panel on inner surface of which a phosphor screen is formed; a funnel joined to the panel; an electron gun generating electron beams; and a deflection yoke which is mounted within said funnel to deflect the electron beams, wherein said funnel satisfies a condition: Rdi/Rdo.ltoreq.0.54 wherein Rdo is radius of curvature at one outer corner of a cross section of yoke portion of said funnel, and Rdi is radius of curvature at one inner corner of the cross section.
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