Patent ID: 7446464

Claim:
A field emission display (FED), comprising: a first substrate; a cathode electrode arranged on the first substrate, with a circular cavity being formed perforating the cathode electrode exposing the first substrate therethrough; a first layer arrangement arranged on the cathode electrode and being perforated by a first circular aperture that exposes an exposed portion of the cathode electrode; an insulation layer arranged on the first layer arrangement and being perforated by a second circular aperture that is adjacent to the first circular aperture; a gate electrode arranged on the insulation layer and being perforated by a third circular aperture that is adjacent to the second circular aperture; an emitter arranged in a ring shape on the exposed portion of the cathode electrode, the emitter being arranged along an inner circumference of the first circular aperture; and a second substrate arranged to face the first substrate with a predetermined distance therebetween, an anode electrode and a fluorescent layer having a predetermined pattern being arranged on the second substrate, wherein inner diameters of the third circular aperture and the second circular aperture are larger than an inner diameter of the first circular aperture, and an inner diameter of the cavity is smaller than the inner diameter of the first circular aperture.