Electron-emitting device and electron beam-generating apparatus and image-forming apparatus employing the device

摘要

An electron-emitting device having an electron-emitting portion between electrodes on a substrate comprises a region A and a region B, the region A being electrically connected through the region B to at least one of the electrodes, electric conductivity sigma 1 of the material mainly constituting the region A and electric conductivity of the material sigma 2 mainly constituting the region B being in the relation of sigma 1> sigma 2, and the region A being the electron-emitting portion. An electron beam-generating apparatus and image-forming apparatus comprise the electron-emitting device and a modulation means for modulating the electron beams emitted from the electron-emitting elements in accordance with information signals.