Abstract: A flat picture tube including a glass vessel which is internally evacuated, a heater installed inside the glass vessel for emitting heat electrons, a plurality of anodes extended in one direction and disposed at a constant interval on one inner plane of the glass vessel for absorbing the heat electrons, a plurality of fluorescent units disposed on the plurality of anodes in a matrix shape for radiating depending on heat electrons absorbed to the anodes, and a plurality of control grids extended perpendicularly to the anode extended direction and disposed in a constant interval for controlling the absorption of the heat electrons toward the anodes operates in a matrix digital method and does not necessitate an electron gun nor deflection yokes, thereby reducing the volume thereof. In the case of a 20 inch picture tube, the maximum thickness thereof is only 5 cm so that it can be adopted for a wall television. Also, since a high-voltage power is not required, the overall power consumption is lowered.

Abstract: A gas flat display tube is disclosed including a glass container having a discharge gas therein; a plurality of cathodes extending horizontally and arranged by a predetermined interval in the glass container, for emitting electrons; a plurality of anodes extending vertically and arranged by a predetermined interval on one side of the glass container, for absorbing the emitted electrons; a plurality of phosphors arranged in a matrix form on the plurality of anodes and becoming luminous by the electrons absorbed into the anodes; and a plurality of gates extending vertically and arranged by a predetermined interval on the phosphors, for controlling the emitted electrons to be absorbed into the anodes.

Abstract: A flat picture tube including a glass vessel which is internally evacuated, a heater installed inside the glass vessel for emitting heat electrons, a plurality of anodes extended in one direction and disposed at a constant interval on one inner plane of the glass vessel for absorbing the heat electrons, a plurality of fluorescent units disposed on the plurality of anodes in a matrix shape for radiating depending on heat electrons absorbed to the anodes, and a plurality of control grids extended perpendicularly to the anode extended direction and disposed in a constant interval for controlling the absorption of the heat electrons toward the anodes operates in a matrix digital method and does not necessitate an electron gun nor deflection yokes, thereby reducing the volume thereof. In the case of a 20 inch picture tube, the maximum thickness thereof is only 5 cm so that it can be adopted for a wall television. Also, since a high-voltage power is not required, the overall power consumption is lowered.