Patent ID: 6639352
Filing Date: 2003-10-28
Classification: H01J

Abstract:
A flat lamp for emitting light to a surface area, comprising:a planar cover formed of a transparent material; a fluorescent material on an entire rear surface of the planar cover; an anode formed on the rear surface of the planar cover; a bottom coupled with the rear surface of the planar cover to form a sealed inner space between the bottom and the rear surface of the planar cover; a cathode formed on a surface of the bottom internal to the sealed inner space; power supply means electrically connected to the anode and the cathode to supply an external power source; and a plasma-discharging gas injected into the sealed inner space, wherein visible light is produced uniformly over an entire surface of the planar cover by a reaction between the plasma-discharging gas and an electric field generated between the cathode and the anode.