Carbon fiber-based field emission devices
AssigneeAdvanced Technology Materials, Inc.
InventorsXueping Xu, Charles P. Beetz, George R. Brandes, Robert W. Boerstler, John W. Steinbeck
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Abstract
Electron field emission devices (cold cathodes), vacuum microelectronic devices and field emission displays which incorporate cold cathodes and methods of making and using same. More specifically, cold cathode devices comprising electron emitting structures grown directly onto a substrate material. The invention also relates to patterned precursor substrates for use in fabricating field emission devices and methods of making same and also to catalytically growing other electronic structures, such as films, cones, cylinders, pyramids or the like, directly onto substrates.
Claims52
A field emission device comprising:
- a substrate;
- and
- a plurality of electron emitter structures comprising carbon-containing fibers crown onto and attached to a surface of the substrate;
- wherein portions of the surface have an electron emitter structure density greater than about 0.1 electron emitter structures per square micron.
A field emission device comprising:
- a substrate;
- and
- at least one electron emitter structure comprising a carbon-containing fiber attached to a surface of the substrate;
- wherein the carbon-containing fiber is grown on the surface and hence chemically bonded to the substrate.
Dependencies are inferred from the claim text.