Patent ID: 6356030
Filing Date: 2002-03-12
Classification: G09G,H01J

Abstract:
A fluorescent luminous type display device comprising:a vacuum airtight envelope including a first insulating substrate and a second insulating substrate arranged opposite to said first insulating substrate; at least one anode constituted by at least one anode electrode arranged on an inner surface of said first insulating substrate and at least one phosphor layer emitting secondary electrodes and laminatedly deposited on said anode electrode; at least one cathode electrode arranged on an inner surface of said second insulating substrate and at least one field electron emission material laminatedly arranged on said cathode electrode; at least one gate electrode arranged between said phosphor layer and said field electron emission material; and a drive circuit for driving each of said anode electrode, cathode electrode and gate electrode in response to a display signal; said drive circuit including a means for driving said anode electrode, cathode electrode and gate electrode to cause electrons emitted from said field electron emission material to be impinged on said phosphor layer, leading to luminescence of said phosphor layer and then floating a potential at said anode electrode; said drive circuit applying a voltage at a predetermined level between said gate electrode and said cathode electrode to maintain luminescence of said phosphor layer.