Field emission luminescent light source

摘要

A field emission luminescent lamp includes a bulb ( 40 ) being vacuum sealed and defining an inner surface; a lamp head mated with the bulb; an electron emitting cathode filament ( 20 ) having a conductive wire ( 10 ) and a plurality of electron emitters ( 12 ) formed thereon, the electron emitting cathode filament is positioned in the bulb; an anode layer ( 44 ) formed on the inner surface of the bulb; a phosphor layer ( 42 ) formed on the anode layer; an anode electrode ( 56 ) located at the lamp head and electrically connected with the anode layer; and a cathode electrode ( 54 ) located at the lamp head and electrically connected with the electron emitting cathode filament. The lamp may further include a gate grid ( 62 ) and a gate electrode ( 54 ). The gate grid defines a number of grid holes and surrounds the cathode filament. The gate grid is electrically connected with the gate electrode.