Patent ID: 6713970
Filing Date: 2004-03-30
Classification: G09G,H01J

Abstract:
A cathode-grid plate of a flat display screen, a cathode of which is formed of regions of electron emission microtips (2) having bases biased by cathode column conductors, a row-connected extraction grid (3) being formed of emissive areas (28â€²) individualized per pixel and provided with holes (4) at microtip locations, an intersection of a column and a row defining a location of a screen pixel, and including, for each screen pixel, a transistor for isolating an element (26) which temporarily stores a luminance control signal of a selected pixel, a control gate oxide (64) of each transistor being formed in an insulating layer separating the cathode conductors from the row-connected extraction grid formed of the emissive areas wherein the conductors being formed of meshing for biasing the bases of the microtips.