Field emission backlight unit and its method of operation

摘要

A field emission backlight unit includes: an upper substrate and a lower substrate spaced apart from each other and facing each other; an anode electrode arranged on a lower surface of the upper substrate; a phosphor layer arranged on a lower surface of the anode electrode; cathode electrodes arranged on an upper surface of the lower substrate; an insulating layer having cavities adapted to expose the cathode electrode; a flat panel shaped gate electrode arranged on the insulating layer and having gate apertures respectively connected to the cavities; and an emitter arranged on the cathode electrode; the gate electrode is adapted to receive a ground voltage and the cathode electrode is adapted to receive a negative voltage