Color cathode ray having a shadow mask structure with curl reduced in a skirt portion thereof
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United States of America Patent
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-
Oct 15, 2002
Issued Date -
N/A
app pub date -
Jun 22, 2001
filing date -
Apr 24, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A color cathode ray tube includes a generally rectangular shadow mask having a curved apertured portion having a multiplicity of electron-transmissive apertures, a curved imperforate portion surrounding and integral with the apertured portion and a skirt portion bent back from a periphery of the curved imperforate portion, and a generally rectangular support frame for suspending the shadow mask by spot welding the skirt portion thereto, within a panel portion of the color cathode ray tube. The skirt portion is provided with a plurality of embossments and is fitted inside the support frame. The embossments protrude inwardly and extend in a direction of a height of the skirt portion. A distance between a bottom of each of the plurality of embossments and a border of the curved apertured portion is at least 4.5 mm.
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