Color cathode ray tube
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United States of America Patent
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Issued Date -
Jun 23, 2005
app pub date -
Nov 24, 2004
filing date -
Nov 27, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Disclosed herein is a color cathode ray tube which optimizes the structure of a glass panel and funnel to achieve weight reduction thereof. In the color cathode ray tube, a curvature radius of an outer surface of the panel is in a range of 5000 mm to 100000 mm, and the panel is configured to satisfy an expression: 1.0.ltoreq.(OAH*CFT)/USD.ltoreq.1.5, where, OAH is a distance from the outer surface of the panel to a sealing surface between the panel and the funnel, USD is a diagonal length of an effective screen of the panel, and CFT is a thickness of a central region of the panel. The cathode ray tube of the present invention has the effects of reducing manufacturing costs through weight reduction thereof, of lowering the degree of breakage during a heat treatment step included in a manufacturing process of the cathode ray tube, resulting in an improved yield, and of effectively intercepting X-rays generated during operation thereof.
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