Method of manifacturing a cold cathode, field emission device and a field emission device manufactured by the method.

摘要

A method is provided for manufacturing a cold cathode field emission device. The method comprises the steps of: providing a layer (11) of anodised alumina having a plurality of elongate pores (12) which are substantially orthogonal to major surfaces (13, 13 min ) of the layer (11); filling said pores completely with an electron emissive material, and then removing at least a part of said layer to form a defined surface (13 sec ) of said layer (11) and to produce a plurality of electron emissive spikes (16) extruding from and at an angle to said defined surface (13 sec ) wherein a plurality of electron emissive structures (17) are produced, each structure (17) comprising a plurality of electron emissive spikes (16) inclined to one another.