Electron amplification channel structure for use in field emission display devices
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United States of America Patent
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Nov 27, 2001
Issued Date -
N/A
app pub date -
Jun 23, 1999
filing date -
May 6, 1997
priority date (Note) -
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Abstract
Cathodoluminescent field emission display devices features an electron amplification structure for generating secondary electron emissions. The electron amplification structure includes a channel structure having a bottom wall coupled to at least one side wall, thereby defining a channel cavity, and at least one protrusion extending from the side wall into the channel cavity. Furthermore, a primary electron source or emitter is provided for generating primary electron emission into the channel cavity, whereby secondary emissions of electrons are produced when the protrusion is bombarded by electrons within the channel structure. The use of a narrow channel in the electron amplification structure reduces the possibility that a returning ion will strike the emitter, and thus decreases cathode emitter tip erosion.
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