Patent ID: 6456014
Filing Date: 2002-09-24
Classification: H01J

Abstract:
A field emission device comprising:a casing whose interior is kept to be a vacuum; an anode plate provided inside said casing; an emitter plate for emitting electrons held to face said anode plate in said casing, said emitter plate being composed of a conductive plate having a plurality of field emission portions facing said anode plate, said electrons being emitted to said anode plate so that a current flows between said anode plate and said emitter plate; a gate plate for controlling said current between said anode plate and said emitter plate, said gate plate having a plurality of openings corresponding to said plurality of field emission portions of said emitter plate, said emitter plate and said gate plate being held to be insulated from one another; a gate voltage supply terminal for supplying a gate voltage to said gate plate; and a gate current limiting element inserted between said gate plate and said gate voltage supply terminal.