Patent ID: 7710010

Claim:
An electron beam apparatus comprising: a rear plate including an electron-emitting device with a device electrode and a wiring connected to the device electrode; and a face plate which includes an anode electrode, which is arranged facing the rear plate, and which is irradiated with electrons emitted from the electron-emitting device; wherein a three-dimensional structure forming a space in which a wiring-side portion of the device electrode is located is arranged on the rear plate; wherein a surface potential of the three-dimensional structure is defined so that an electric field intensity of the space becomes weaker than an average electric field intensity expressed below, average electric field intensity= Va/d, where Va is application voltage of the anode electrode, and d is an interval between the rear plate and the face plate; wherein the device electrode includes a high-temperature portion where temperature locally rises when current flows through the device electrode, the high-temperature portion being positioned in the space or at a distance of less than or equal to 20 μm from the space; and wherein the three-dimensional structure includes a cantilever-like protruding portion which protrudes over the wiring-side portion of the device electrode, and the space is a space between the protruding portion and the rear plate.