We fabricated a basic triode-type field emission display (FED) structure by using heavily Si-doped AlN and demonstrated its action. The FED consisted of the heavily Si-doped AlN field emitter, mesh grid, and phosphor-coated anode screen. We used the grid voltage to control the emission current. This device exhibited an emission current of 2 μA for an electric field of 23 V/μm, and luminescence from the phosphor excited by the field-emitted electrons was observed. The brightness of the luminescence increased as the grid voltage was increased, and it was uniform over the entire field-emission area.
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