H - Electricity – 01 – J
Patent
H - Electricity
01
J
313/1.9
H01J 17/48 (2006.01) H01J 17/49 (2006.01)
Patent
CA 1053737
Abstract of the Disclosure The panel comprises a base plate which carries a plurality of conductive strips which are oriented parallel to each other and are suitably insulated so that each such strip is divided into a plurality of pairs of electrodes, each pair including a first electrode, operable as a scanning or priming cathode, and a second electrode operable as a display cathode. The orientation of the strips and the subdivisions is such that the pairs of electrodes are arrayed in rows and columns, and correspondingly, the first electrodes and the second electrodes themselves are separately disposed in rows and columns. Because the scan and display cathodes are formed from a common strip electrode, the columns of display cathodes are electrically connected and the columns of scan cathodes are electrically connected. Insulating means are provided which compartmentalize the rows of first scan cathodes and the second display cathodes so that a separate slot or channel is provided for each row of display cathodes and each row of scan cathodes. A separate display anode is provided in operative relation with each row of display cathodes and with each row of scan cathodes. In operation of the panel, each column of scan cathodes is energized in turn by connecting all of the scan anodes in an operating circuit and energizing each column of scan cathodes separately and sequentially. As each column of scan cathodes is energized, information signals are applied to selected display anodes, and this causes cathode glow to transfer to the display cathodes associated with the selected display anodes from the associated scan cathodes which are paired with such display cathodes. As each column of electrode pairs is -1- thus energized in turn and all of the columns are energized sequentially, and selected display cathodes are energized, a changeable but visually stationary message is displayed by the energized display cathodes.
245072
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