Patent ID: 7741768
Filing Date: 2010-06-22
Classification: H01J

Abstract:
1. A field emission device comprising: a cathode electrode; an emitter formed on the cathode electrode for emitting electrons; an insulating layer located on the cathode electrode; a grid electrode attached on an anode-facing surface of the insulating layer; and an isolated film attached on only a part of an anode-facing surface of the grid electrode and covering a side of the grid electrode and only a part of a side of the insulating layer; wherein the part of the anode-facing surface of the grid electrode having the isolated film is adjacent to the emitter, and a part of the anode-facing surface of the grid electrode which is farther away from the emitter is exposed out of the isolated film, the side of the grid electrode covered by the isolated film is in alignment with the side of the insulating layer covered by the isolated film.