Field-emission device that utilizes filamentary electron-emissive elements and typically has self-aligned gate
AssigneeCandescent Technologies Corporation
InventorsJohn M. Macaulay, Peter C. Searson, Robert M. Duboc, Jr., Christopher J. Spindt
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Abstract
A field-emission structure suitable for large-area flat-panel televisions centers around an insulating porous layer that overlies a lower conductive region situated over insulating material of a supporting substrate. Electron-emissive filaments occupy pores extending through the porous layer. A conductive gate layer through which openings extend at locations centered on the filaments typically overlies the porous layer. Cavities are usually provided in the porous layer along its upper surface at locations likewise centered on the filaments.
Claims20
A structure comprising:
- a substrate for providing structural support;
- a patterned lower electrically conductive region comprising a group of generally parallel lines situated over electrically insulating material of the substrate;
- a porous electrically insulating layer situated over the lower conductive region;
- and
- a multiplicity of electron-emissive filaments respectively situated in corresponding pores extending through the porous layer down to the lower conductive region, the lower end of each filament contacting the lower conductive region.
Dependencies are inferred from the claim text.