Electron Beam Source Formed with Biologically Derived Tubule Materials.
Patent, filed 28 Sep 90, Patented 18 Feb 92,
DEPARTMENT OF THE NAVY WASHINGTON DC
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A field emitter array comprises an array of aligned metallic, conductive microtubules extending from a conductive base. The array is typically made by cutting a matrix comprising the aligned microtubules into sections, usually normal to the tubule alignment axis. One end surface of a section is etched or otherwise treated to remove the matrix, but not the tubules. That end surface is then provided with a conductive coating and fixed to a contact. The other end surface of that section is then also treated to remove the matrix material and leave the tubules extending from the conductive metal base. Field emitter arrays made according to the present invention provide a greater brightness than conventional field emitter arrays.
- Electrical and Electronic Equipment