Accession Number : ADD015942

Title :   Metal-Glass Composite Field-Emitting Arrays.

Descriptive Note : Patent, Filed 10 Dec 91, patented 13 Apr 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Ayers, Jack D

Report Date : 13 Apr 1993

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 in anode. In an alternative embodiment, the filaments are recessed below the first surface and a conducting coating forms an extractor on that surface.

Descriptors :   *GLASS, *WAFERS, *PATENTS, *METAL MATRIX COMPOSITES, *CERAMIC MATERIALS, ANODES, ARRAYS, COATINGS, ELECTRONS, FILAMENTS, SHAPE, SURFACES, EMITTERS, COMPOSITE MATERIALS, ELECTRICAL CONDUCTIVITY, ELECTRON EMISSION

Subject Categories : Laminates and Composite Materials
      Electrical and Electronic Equipment
      Ceramics, Refractories and Glass
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE