Gas discharge lamps with glow mode electrodes
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United States of America Patent
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-
Apr 16, 2002
Grant Date -
N/A
app pub date -
Jan 22, 1999
filing date -
Feb 23, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A flat panel lamp has internal walls forming a serpentine discharge path between two internal electrodes. Two glow mode electrodes in the form of interdigitated combs are laid on the outside of the front panel of the lamp, on top of the walls. The internal electrodes are connected to a first drive circuit; the glow mode electrodes are connected to a second drive circuit, which drives them at a frequency of about 10 MHz. At high brightness, only the internal electrodes are operative; at low brightness, only the glow mode electrodes are operative; and at intermediate brightness the two sets of electrodes are alternately energized.
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Cited Art Landscape
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