Method of making a field emitter
AssigneesMicroelectronics and Computer Technology Corporation, SI Diamond Technology, Inc.
InventorNalin Kumar
Life of this patent
Estimating the term…
Abstract
A matrix addressable flat panel display includes a flat cathode operable for emitting electrons to an anode when an electric field is produced across the surface of the flat cathode by two electrodes placed on each side of the flat cathode. The flat cathode may consist of a cermet or amorphic diamond or some other combination of a conducting material and an insulating material such as a low effective work function material. The electric field produced causes electrons to hop on the surface of the cathode at the conducting-insulating interfaces. An electric field produced between the anode and the cathode causes these electrons to bombard a phosphor layer on the anode.
Claims23
A method of making a field emitter device, comprising the steps of:
- providing a substrate;
- depositing a layer of a low effective work function material on said substrate;
- depositing a first layer of a conductive material in a first location near said layer of said low effective work function material;
- and
- depositing a second separate layer of said conductive material in a second location near said layer of said low effective work function material, said first and second locations positioned relative to each other and to said layer of said low effective work function material so that said first and second layers of said conductive material are operable to produce an electric field across a surface of said layer of said low effective work function material when a voltage potential is applied between said first and second layers of said conductive material.
A method of making a display device comprising the steps of:
- depositing a patch of a low effective work function material on a substrate;
- depositing on said substrate a first contact of conductive material adjoining a first side of said patch of said low effective work function material;
- and
- depositing on said substrate a second contact of conductive material adjoining a second side of said patch of said low effective work function material.
Dependencies are inferred from the claim text.