Patent ID: 7176615
Filing Date: 2007-02-13
Classification: H01J

Abstract:
1. A field emission device comprising: a cathode including a cathode substrate, a cathode electrode formed on the cathode substrate, and an electric field emitter formed on a portion of the cathode electrode; a field emission suppressing gate formed on the cathode substrate to surround the electric field emitter; a field emission inducing gate formed on the field emission suppressing gate, wherein the field emission inducing gate includes a field emission inducing gate opening that is formed to have an inclined inner wall such that the size of the opening becomes smaller toward an anode from the cathode; and the anode including an anode electrode an anode including an anode electrode facing the electric field emitter for receiving electrons emitted from the electric field emitter, wherein the field emission suppressing gate suppresses electron emission from the electric field emitter, and the field emission inducing gate induces electron emission from the electric field emitter.