Patent ID: 8129895

Claim:
A field emission device (FED) capable of fine local dimming, comprising: an anode substrate including an anode electrode; a fluorescent material disposed on one surface of the anode substrate; a multi-layered cathode substrate disposed opposite to the anode substrate and including a plurality of cathode electrodes, the cathode substrate being formed in a multi-layered structure comprised of a plurality of cathode substrate layers; a field emitter disposed on one surface of the cathode substrate; a plurality of cathodes blocks touching a side of a first cathode substrate layer, each cathode block including a plurality of the cathode electrodes, each cathode block corresponding to sub-pixels or specific regions; a plurality of external electrodes touching said side; a plurality of interconnections for connecting the cathode blocks with the plurality of external electrodes, the plurality of interconnections each being stacked in the multi-layered structure on respective cathode substrate layers, the plurality of interconnections touching a plurality of cathode substrate layers; and a gate electrode interposed between the anode substrate and the cathode substrate.