Cold cathode field emission display with each microtip having its own ballast resistor
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United States of America Patent
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May 27, 1997
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N/A
app pub date -
Aug 27, 1996
filing date -
Apr 10, 1995
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Abstract
A cold cathode field emission display is described. A key feature of its design is that each individual microtip has its own ballast resistor. The latter is formed from a resistive layer that has been interposed between the cathode line and the substrate. When openings for the microtips are formed in the gate line, extending down as far as the resistive layer, an overetching step is introduced. This causes the dielectric layer to be substantially undercut immediately above the resistive layer thereby creating an annular resistor positioned between the gate line and the base of the microtip.
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