Patent ID: 7994701

Claim:
An electron-emitting device comprising a cathode electrode, a first electrode, a second electrode, an insulating layer, a gate electrode, and an electron-emitting member, wherein the gate electrode is located above the cathode electrode, the insulating layer is located between the gate electrode and the cathode electrode, the first electrode is located between the cathode electrode and the insulating layer and is electrically connected to the cathode electrode, the gate electrode, the insulating layer, and the first electrode respectively have an opening communicating with each other, and the electron-emitting member is provided on the cathode electrode, and at least one portion of the electron-emitting member is exposed in the opening, and the second electrode is located on the electron-emitting member and is electrically connected to the cathode electrode through the electron-emitting member, and is provided in the opening of the first electrode so that not only a region corresponding to a periphery of a contour of the opening of the gate electrode but also a periphery of a contour of the second electrode becomes an emission region.