Fabrication of two-part emitter for gated field emission device

A method of fabricating a field emission display, comprising the steps of:

• providing a substrate having a first conductive layer thereon, a first insulating layer over said first conductive layer, a second conductive layer over said first insulating layer, and a plurality of openings formed in said first insulating and second conductive layers;
• forming a sacrificial layer over said second conductive layer;
• forming a bottom portion of a field emitter structure in each of said openings, by vertical deposition of a conductive material, whereby a third conductive layer, having a collimated channel over said bottom portion, is formed over said sacrificial layer;
• completing the formation of a field emitter structure in each of said openings, by non-directional deposition, through said collimated channel, of a tip material on to the top of said bottom portion of a field emitter structure, whereby a top conductive layer is formed over said third conductive layer and only partially over said collimated channel, whereby the tip of said field emitter structure is formed with a rounded point;
• removing said sacrificial layer, said third conductive layer, and said top conductive layer;
• and
• mounting the resulting structure to a faceplate having a transparent base and phosphorescent material formed thereon, to complete said field emission display.