Accession Number : ADD015541

Title :   Method of Making Composite Field-Emitting Arrays.

Descriptive Note : Patent filed 1 Nov 90, Patented 8 Sep 92,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Ayers, Jack D

Report Date : 08 Sep 1992

Pagination or Media Count : 7

Abstract : A field-emitting array is provided which comprises at least one thin wafer having electrically conducting filaments extending through a glass matrix between a first and second parallel surface of the wafer. At the first surface, the filaments extend beyond the plane of the glass matrix. The filaments extending beyond the first surface have an electron-emitting coating on their cylindrical surfaces. The coating extends beyond the filament end to create a shape that emits electrons when an electrical field is applied between the filaments and an anode. In an alternative embodiment, the filaments are recessed below the first surface and a conducting coating forms an extractor on that surface.

Descriptors :   *PATENTS, *COMPOSITE MATERIALS, *FIELD EMISSION, *ARRAYS, ANODES, ARRAYS, COATINGS, ELECTRONS, FILAMENTS, GLASS, SHAPE, SURFACES, WAFERS, ELECTRON EMISSION, ELECTRIC CONDUCTORS, MATRIX MATERIALS, CERAMIC MATERIALS, POLYCRYSTALLINE, OXIDES, LAYERS, EXTRACTION, MICROELECTRONICS

Subject Categories : Ceramics, Refractories and Glass
      Textiles
      Electrical and Electronic Equipment
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE