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US 5,543,684 AGranted
Flat panel display based on diamond thin films
AssigneeMicroelectronics and Computer Technology Corporation
InventorsNalin Kumar, Chenggang Xie
Life of this patent
Estimating the term…
Abstract
A field emission cathode is provided which includes a substrate and a conductive layer disposed adjacent the substrate. An electrically resistive pillar is disposed adjacent the conductive layer, the resistive pillar having a substantially flat surface spaced from and substantially parallel to the substrate. A layer of diamond is disposed adjacent the surface of the resistive pillar.
Claims28
A field emission cathode, comprising:
- a substrate;
- a conductive layer disposed adjacent said substrate;
- an electrically resistive pillar disposed adjacent said conductive layer, said resistive pillar having a substantially flat surface spaced from and substantially parallel to said substrate and at least one entirely exposed sidewall extending from said conductive layer to said flat surface of said pillar;
- and
- a layer of cathode material disposed adjacent said surface of said resistive pillar, and having a substantially flat exposed surface spaced from and substantially parallel to said substrate.
2 more elements
A field emission cathode assembly, comprising:
- a plurality of spaced apart field emission cathodes adjacent a substrate, each of said field emission cathodes comprising:
- an electrically resistive pillar spaced from said substrate by a layer of metal, said resistive pillar having a substantially flat surface spaced from and substantially parallel to said substrate and at least one entirely exposed sidewall extending from said layer of metal to said substantially flat surface of said pillar;
- and
- a layer of cathode material disposed adjacent said surface of said resistive pillar and having a substantially flat exposed surface spaced from and substantially parallel to said substrate;
- and
- an anode spaced from said layer of cathode material of each said cathode by a gap, a width of each said gap defined by a height of a corresponding said pillar, a resistance of each said pillar proportionate to said height of said pillar such that a potential across each said gap is substantially the same.
3 more elements
A field emission cathode, comprising:
- a substrate;
- a conductive layer disposed adjacent said substrate;
- an electrically resistive pillar disposed adjacent said conductive layer, said resistive pillar having a substantially flat surface spaced from and substantially parallel to said substrate and at least one entirely exposed sidewall extending from said conductive layer to said flat surface of said pillar;
- and
- a layer of cathode material having a substantially flat surface and disposed adjacent said surface of said resistive pillar, wherein said resistive pillar is comprised of said cathode material, and wherein said resistive pillar and said cathode material both comprise diamond.
2 more elements
Dependencies are inferred from the claim text.