Color picture tube
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United States of America Patent
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N/A
Issued Date -
Jun 7, 2007
app pub date -
Nov 13, 2006
filing date -
Dec 2, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The radii of curvature R.sub.D, R.sub.S and R.sub.L along a diagonal axis, a short side and a long side of an outer surface of a useful portion of a panel whose inner surface is provided with a phosphor screen satisfy R.sub.D.gtoreq.10 m, R.sub.S>R.sub.D, and R.sub.L>R.sub.D. This makes it possible to provide a color picture tube that has an excellent visibility and is not susceptible to the deterioration in color purity due to doming, while including a shadow mask with excellent formability and strength.
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