Single tip redundancy method and resulting flat panel display
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United States of America Patent
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-
Mar 7, 1995
Grant Date -
N/A
app pub date -
Jul 1, 1993
filing date -
Jul 1, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A high resolution matrix addressed flat panel display having single field emission microtip redundancy is formed. A dielectric base substrate is provided. Parallel, spaced conductors acting as cathode columns for the display are formed upon the substrate. A layer of insulation is located over the cathode columns. Parallel, spaced conductors acting as gate lines for the display is formed over the layer of insulation at a right angle to the cathode columns. The intersections of the cathode columns and gate lines are the pixels of the display. A plurality of openings at the pixels extend through the insulating layer and gate lines. At each of the pixels are a plurality of field emission microtips connected to and extending up from the cathode conductor columns and into the plurality of openings. There is a circular resistive layer surrounding each of the field emission microtips to obtain emission uniformity by sustaining the cathode to gate voltage.
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