Patent ID: 6876141

Claim:
Electron emitter structure for field emission display, said display including a tabular vacuum chamber confined between a rigid transparent front plate internally overlaid with a transparent conducting anode and a substantially flat electron emitting structure provided with electron-beam emitting means and electron-beam current intensity control means, said structure comprising a substantially flat insulating substrate having a first surface facing said front plate, and a second surface, on an opposite side, facing a getter distributed substantially uniformly over said display area, the passage of the residual contaminant gas molecules from said chamber to said getter being mediated by a multitude of pores distributed substantially uniformly over said insulating substrate, wherein said insulating substrate's second surface, facing said getter, is overlaid with a first conducting foil which is kept at a negative potential to in relation to said anode, said foil extending uninterrupted into at least some of said pores plating their side walls, the distal edges of said plating terminating substantially at the rims of said pores, the edges of said pore-like apertures not exceeding the plane of said first surface.