Electron emission device with electron emission region on cathode electrode with gate electrode arranged to focus electrons emitted from the electron emission region

摘要

An electron emission device includes a cathode substrate and an anode substrate facing each other that are separated from each other by a predetermined distance to form a vacuum vessel. An electron emission unit is disposed on the cathode substrate to emit electrons, and a light emission unit is disposed on the anode substrate to emit light caused by the electrons for displaying desired images. In more detail, a gate electrode is arranged on the cathode substrate to correspond to the center of a pixel area of the electron emission device, a cathode electrode is arranged on an outer portion of the gate electrode while insulated from the gate electrode, and an electron emission region is arranged on the cathode electrode.