Color cathode ray tube
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United States of America Patent
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N/A
Issued Date -
Mar 17, 2005
app pub date -
May 14, 2004
filing date -
Sep 17, 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 beam landing errors caused by doming phenomenon are corrected such that color purity is improved. A color cathode ray tube in accordance with the present invention 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; a shadow mask mounted to the panel, the shadow mask having a faceplate portion and a peripheral skirt portion bent back from the faceplate portion; and a frame having at least a welding bead, a portion of the welding bead being joined to said skirt portion, wherein depth of the welding bead is in the range of 0.5 mm to 30 mm.
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