Abstract: An organic light emitting display device includes: an organic light emitting display panel configured to include a plurality of power lines, a plurality of scan lines and a plurality of data lines; a power supplier configured to apply a reference voltage to the power lines; and a controller configured to apply at least one control signal to the power supplier. The reference voltage is gradually varied along the distance from the power supplier.

Abstract: A method for driving a field emission device (FED) applies an alternating (AC) voltage as a driving voltage for emitting electrons in a field emission device comprising cathode electrode including an emitter and an anode electrode facing the cathode electrode. A method for aging an FED uses a constant voltage so that electrons cannot be emitted from the electron emission source, and an AC voltage so that electrons can be periodically emitted from the emitter when the FED is aged.

Abstract: A field emission backlight unit includes: upper substrate and lower substrate separated from each other and facing each other; an anode formed on a bottom surface of the upper substrate; a phosphor layer formed on a bottom surface of the anode; a plurality of cathodes and gate electrodes alternately formed on a top surface of the lower substrate; and emitters formed on the cathodes; the gate electrodes include first gate electrodes formed of a conductive material on the top surface of the lower substrate and second gate electrodes having a greater thickness than that of the first gate electrodes and formed on a top surface of the first gate electrodes.

Abstract: A method for driving a field emission device (FED) applies an alternating (AC) voltage as a driving voltage for emitting electrons in a field emission device comprising cathode electrode including an emitter and an anode electrode facing the cathode electrode. A method for aging an FED uses a constant voltage so that electrons cannot be emitted from the electron emission source, and an AC voltage so that electrons can be periodically emitted from the emitter when the FED is aged.

Abstract: A field emission backlight unit includes: upper substrate and lower substrate separated from each other and facing each other; an anode formed on a bottom surface of the upper substrate; a phosphor layer formed on a bottom surface of the anode; a plurality of cathodes and gate electrodes alternately formed on a top surface of the lower substrate; and emitters formed on the cathodes; the gate electrodes include first gate electrodes formed of a conductive material on the top surface of the lower substrate and second gate electrodes having a greater thickness than that of the first gate electrodes and formed on a top surface of the first gate electrodes.

Abstract: A backlight unit having a surface luminescence structure includes: a first substrate; a first electrode arranged on a lower surface of the first substrate; a first mixed layer arranged on a lower surface of the first electrode, and including emitters and phosphors; a second substrate arranged to face the first substrate; a second electrode arranged on an upper surface of the second substrate; and a second mixed layer arranged on an upper surface of the second electrode, and including emitters and phosphors. The backlight unit can be easily manufactured at a low cost, and the light emission efficiency and brightness characteristics of the backlight unit are maximized.