Abstract:
A display device comprising a panel structure including a plurality of gas-filled cells and including, within the body of the panel, gas communication channels extending between selected cells to provide a selective flow of excited gaseous particles from certain cells to others to prime the receiving cells and thereby control the transfer of glow between the cells.
Abstract:
A gas-discharge display device has a parallel array of anodes and a parallel array of cathodes forming a matrix of anode-cathode cross points or discharge dots. The display device is filled with a discharge gas mixture at the discharge dots or cells. Displaying and scanning are respectively achieved through drive circuits supplying discharges of a layer and a smaller current, or discharges for a longer and shorter time respectively.
Abstract:
The panel comprises a base plate which carries a plurality of column cathode strips which are oriented parallel to each other, with insulating means dividing the surface of each such strip into a column of a plurality of separate operating areas including display cathode areas and priming cathode areas, the latter providing excited particles for use by the display areas. The display cathodes and priming cathodes are arrayed in rows and columns, and, in each column, there are gas communication paths between priming cathode areas and display cathode areas. In addition, there are gas communication paths along each row of priming cathodes. A separate display anode is provided in operative relation with each row of display cathodes, and a separate priming anode is provided in operative relation with each row of scan cathodes, and each crossing of an anode and cathode area forms a display cell or a priming cell.In operation of the panel, each column of scanning cells is energized successively and in turn by connection of all of the priming anodes in an operating circuit and by energization of each cathode strip separately and sequentially. Since only the priming anodes are energized, only the priming cells and the priming cathode areas are energized. As each column of priming cathodes is energized, information signals are applied to selected display anodes, and this causes cathode glow to transfer through the appropriate gas communication paths to the display cathodes associated with the selected display anodes, from the associated priming cathodes. As each column of cells is 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.
Abstract:
The display panel includes a base plate which carries a plurality of pairs of scanning cathodes and display cathodes, oriented in columns, and insulating spacers which, in each pair, separate the scanning and display cathodes into operative pairs, with the pairs being arrayed in rows and columns. The panel also includes a face plate which carries a plurality of anode strips, oriented in rows, each strip overlaying and having a portion in operative relation with a row of scanning and display cathode pairs. In each pair of cathodes, only the display cathode is visible to a viewer. The face plate and base plate are sealed together to form an envelope which is filled with a gas suitable for supporting cathode glow.
Abstract:
The disclosure is of a display panel, known as a bar graph and used for displaying bars of light of varying length. The panel includes an anode and a series of cathode bars, the cathodes being connected in three phases of groups which are formed by a trifilar winding on an insulating base plate. The anode for the panel may be formed on the face plate which is hermetically sealed to the base plate to form a gas-tight envelope which is filled with an ionizable gas.The principles of the invention can be used to make other types of panels having electrodes connected in groups.
Abstract:
A highly efficient, high current density gas discharge display panel having rows of columns of gas discharge cells. Each row and discharge cells communicates with a row of hollow cathodes formed of row-wise extending front and rear cathode means positioned adjacent and essentially parallel to each other. When a forward and rear cathode means are both energized, they operate together to form a row of hollow cathodes. With only the forward cathode means energized, a low current gas discharge exists in a row of cells, which discharge is transferred to the next adjacent row of cells by the application of scanning signals to the forward cathode means. A simplified unitary center sheet houses the cell enclosures and grooves for anode and cathode conductors to eliminate the need for multiple layers which require registration with one another. The novel structure permits a fast scan rate and efficient priming of the cells to avoid the necessity for high voltage video drivers.
Abstract:
A discharge promotion member for a discharge display device consisting of a conductive plate which is provided with a plurality of apertures therethrough, and an insulating porous layer formed on the surface of the conductive plate. The discharge promotion member is located between a cathode and an anode or the like of the discharge display device in which a glow light discharge is carried out through the aperture of the discharge promotion member by a plasma discharge between the cathode and anode of the discharge display device.
Abstract:
In a matrix type gas discharge display device comprising a number of discharge elements at the crossings of the rows and columns of the display matrix, a group of display anodes is disposed at each discharge element by using a corresponding number of insulated wires and by removing insulation of one wire at each discharge element, and such exposed portion is shifted to a successive one of the wires every one of the crossings in a column, so that when the field scanning is made in the column direction, each different anode wire in a group operates successively in cyclic order. The applied scanning voltage is so controlled as to make such successive operation of the anodes. By such a field scanning, each discharge element luminates for a duration which is an integral multiple due to such number, of the duration in the conventional type device provided with only one display anode for each discharge element. The brightness of the displayed picture is increased up to an extent by such integral multiple in a definite and stable manner, and thus noise in the displayed picture can be decreased.
Abstract:
The panel comprises a gas-filled envelope including an elongated base plate having a transverse slot at about its center which divides the plate into two portions. Both portions of the base plate are provided with parallel slots in their top surfaces, and two sets of scan anodes are provided, one set seated in the slots in each portion of the base plate. The inner ends of the scan anodes are bent into and secured in the transverse slot. Two sets of scan-display cathodes are seated on the base plate, one associated with each set of scan anodes, and oriented transverse to the scan anodes and forming rows and columns of scanning or priming cells therewith. An apertured insulating cell sheet having two sets of apertures or cells is seated on the cathodes, with each set of apertures arrayed in rows and columns and overlaying a set of scanning cells, with each display cell aligned with a scanning cell beneath it. Two sets of display anodes are provided, one associated with each set of display cells. The panel envelope is completed by a face plate which covers the display anodes and is sealed to the cell sheet and base plate. The panel is filled with a suitable ionizable gas.Because of its length, in order to achieve favorable brightness in all of the cells of the panel, the two portions of the panel are operated simultaneously. The panel is operated by energizing the two sets of scanning cells sequentially, column-by-column, and, as the columns of scanning cells are energized, selected display anodes are energized by information signals to transfer glow from a scanning cell to the display cell above it.