Electron-emitting device, electron-emitting apparatus, image display apparatus, and light-emitting apparatus

摘要

An electron-emitting device in which the specific capacitance and the drive voltage are reduced, and which is capable of obtaining a finer electron beam by controlling the trajectory of emitted electrons. An electron-emitting portion of an electron-emitting member is positioned between the height of a gate and the height of an anode. When the distance between the gate and a cathode is d; the potential difference at driving the device is V 1; the distance between the anode and the substrate is H; and the potential difference between the anode and the cathode is V 2, then the electric field E 1 =V 1 /d during driving is configured to be within the range from 1 to 50 times E 2 =V 2 /H.