Electron emission element and image output device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Jun 4, 2002
Grant Date -
N/A
app pub date -
Mar 14, 2000
filing date -
Mar 18, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electron emission element of the present invention includes a substrate, a cathode formed on the substrate, an anode opposed to the cathode, an electron emission member disposed on the cathode, and a control electrode disposed between the cathode and the anode. During operation, the electric field intensity immediately above the electron emission member is lower than that between the control electrode and the anode. Alternatively, the spatial average of an electric field intensity between the electron emission member and the control electrode is smaller than that between the control electrode and the anode.
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