Dynamic driving vacuum fluorescent display

摘要

A dynamic driving vacuum fluorescent display (VFD) preventing erroneous activation of a phosphor layer by leakage electrons and allowing a simpler wiring structure is disclosed. The VFD has a substrate; a plurality of anodes formed on the substrate, phosphor layers formed on the respective anodes; cathodes located above the phosphor layers to generate electrons which strike the phosphor layers; and conductive ribs formed of an electrically conductive material on the substrate so as to surround at least a portion of a periphery of each of the phosphor layers and having a predetermined height. Each of the conductive ribs not only accelerates the electrons when a positive voltage is applied, but also cuts off the electrons from activation of the phosphor layers when a negative or zero cut-off voltage is applied.