| 摘要 |
PURPOSE: A vacuum fluorescent display is provided to reduce manufacturing costs by allowing for a wide variety of colors by using the reduced numbers of phosphors. CONSTITUTION: A fluorescent display tube comprises a front substrate(14) and a rear substrate(16) which are joined with each other by a side glass(12) so as to constitute a vacuum container; a filament(18) fixed within the vacuum container, and which emits thermal electrons; a plurality of anode electrodes(28) arranged at the surface of the front or rear substrate, and which are applied with a voltage through a wire layer(22); a control electrode for accelerating or cutting off the thermal electrons emitted from the filament; and a plurality of dot or segment type light emitting layers(30,32) arranged at the surfaces of anode electrodes, and which emits light by the thermal electrons. The light emitting layers are partially formed by the fluorescent layers stacked into two or more layers.
|
