Abstract: A modified electroluminescent display device structure using sub-pixel electrodes allows higher efficiency, larger size capability, and higher manufacturing yields than existing construction. Row and/or column configurations use sub-pixel electrodes connecting through vias in insulating layers to connect to opaque row and column high conductivity line patterned electrodes. Electrode losses due to line configured electrode resistances are substantially reduced.

Abstract: A modified electroluminescent display device structure using sub-pixel electrodes allows higher efficiency, larger size capability, and higher manufacturing yields than existing construction. Row and/or column configurations use sub-pixel electrodes connecting through vias in insulating layers to connect to opaque row and column high conductivity line patterned electrodes. Electrode losses due to line configured electrode resistances are substantially reduced.

Abstract: An improved hermetic seal means for use in an electroluminescent display device for joining the protective cover sheet (glass) over the base substrate. The base substrate has typically deposited thereon multiple thin film layers. The hermetic seal comprises an electrically insulative thin film layer disposed over the conductive thin film leads associated with the multiple thin film layers, and metallic solder means over the insulative thin film layer to provide a bond between the cover sheet and base substrate.

Abstract: The deposition of thin films is carried out by a co-sputtering cathode technique particularly suited for deposition of doped thin films on large area substrates. A relatively large planar magnetron sputtering apparatus having a rectangular (picture frame shaped) plasma region is provided to obtain efficient sputtering of the host material. A vacant center area defined by the plasma region is provided for diode sputtering of the dopant. In RF sputtering, co-excitation of the power source is desired to prevent RF mode beating.

Abstract: An indicator structure including one or more lengths of perforated tubing arranged in a desired configuration, such as a traffic barricade. The tubing contains one or more flash lamps which produce a light-tunnel effect during operation to provide a high intensity warning or indicating signal in a pre-selected configuration of flash illumination via the tubing perforations.

Abstract: A switching circuit for energizing a load, such as fluorescent lamp ballasts, in response to a control signal of preselected frequency superimposed on AC power circuits which supply the load. A triac is gated to conduct the AC power to the load by a circuit including an impedance element and a series resonant LC network tuned to the frequency of the control signal. The gate circuit is arranged to block the control signal during all but a small portion of each half cycle of the applied AC power, thereby reducing the consumption of control signal power.