Patent ID: 6794805
Filing Date: 2004-09-21
Classification: B82Y,H01J

Abstract:
An array of field emission electron sources comprising:a substrate; a conductive layer, located on a surface of said substrate, comprising a plurality of stripes extending in parallel to each other at predetermined intervals; a strong electric field drift layer, formed on said conductive layer, comprising a porous poly-crystal semiconductor layer which has been subjected to oxidation or nitrization; thin conductive film surface electrodes, formed on said drift layer, comprising a plurality of thin conductive film stripes extending in parallel to each other at predetermined intervals in a manner to oppose and cross over the stripes of said conductive layer via said drift layer; said drift layer comprising electron emitting regions which are coupled between said conductive layer and said thin conductive film, and comprising non-electron emitting regions which are not coupled between said conductive layer and said thin conductive film; said electron emitting and non-emitting regions arranged separate from one another, thereby forming a plurality of electron sources arranged at predetermined intervals on said substrate; and wherein electrons are injected from said substrate into said drift layer and are drifted and discharged through said thin conductive film by applying a voltage across said thin conductive film and said conductive layer with said thin conductive film serving as a positive electrode.