Gas discharge tube and display device having a protrusion having a surface facing towards display surface
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United States of America Patent
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-
Mar 4, 2008
Grant Date -
May 18, 2006
app pub date -
Feb 25, 2005
filing date -
Nov 15, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A gas discharge tube includes a thin tube having a discharge space therein and an electron emissive coating formed within the thin tube. The thin tube has a display surface on which a pair of display electrodes is adapted to be disposed, and has a rear surface on which a signal electrode is adapted to be disposed. A surface portion facing toward the display surface is formed within the thin tube at a location nearer to the display surface from the midway between the display and rear surfaces. An electron emissive coating is formed on the surface portion. Thus the gas discharge tube can reduce its firing voltage without lowering the light-emission efficiency.
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