Abstract: There is disclosed a method and apparatus of driving a plasma display panel that is adaptive for reducing discharge delay upon reset discharge. A driving method and apparatus of a plasma display panel according to an embodiment of the present invention applies a plurality of pulses to the plasma display panel for the reset period in order to reduce a discharge delay.

Abstract: A discharge lamp 50 comprises a luminous bulb 10 in which a luminous material 18 is encapsulated and a pair of electrodes 12 are arranged to be opposed to each other, and sealing parts (11a, 11b) that are formed at both ends of the luminous bulb 10 and in which metal foil structures 13 electrically connected to the pair of electrodes 12, respectively, are sealed. At least one of the metal foil structures 13 is composed of a first metal foil 13a, a second metal foil 13b and a metal bar 21 coupling both of them. At least one sealing part 11b of the sealing parts includes a cavity 20 around the position where in the sealing part the metal bar 21 is located, and at least a rare gas is encapsulated in the cavity 20.

Abstract: There is disclosed a method and apparatus of driving a plasma display panel that is adaptive for improving its contrast and enabling its high speed driving. A driving method of a plasma display panel according to an embodiment of the present invention applies a setup voltage with a first gradient to the scan electrode for the reset period; and applies the setup voltage with a second gradient to the sustain electrode while a voltage on the scan electrode rises.

Abstract: A spark gap point and spark gap assembly for a welding-type device are disclosed for igniting and stabilizing a welding-type arc. A double-headed spark gap point having spark gap surfaces on two ends is incorporated into a spark gap assembly with a pair of single-headed spark gap points that each have only a single spark gap surface. All spark gap points are arranged coaxially on a base so that each spark gap surface faces another spark gap surface. A spark gap is created between each set of opposing spark gap surfaces. When a high voltage is applied across the spark gap points, sparks periodically arc across the spark gaps, creating a high frequency, high voltage signal usable to ignite or stabilize a welding-type arc.

Abstract: A plasma display panel may include first and second substrates facing each other and spaced apart from each other, barrier ribs between the first and second substrates, the barrier ribs defining discharge cells to define discharge and non-discharge regions, address electrodes extending in a first direction in respect to the discharge cells, and first and second electrodes formed on the second substrate and extending in a second direction intersecting the first direction, where at least one of the first and second electrodes includes black projections extending from the discharge region to the non-discharge region.

Abstract: At least main electrodes for a low pressure gas discharge arranged at a distance from each other are present in such switches, the main electrodes forming a cathode and an anode of a discharge path in an interrupter chamber for the gas discharge which is fired by increasing electron density in a cathode cavity. For this purpose, at least the cathodes have at least one opening, preferably the cathode and anode, having opposite aligned openings for triggering the discharge. In such an arrangement, an arrangement for the generation of a magnetic field superimposed on the discharge may be present. At least one slot is present in at least one of the main planar electrodes for generating a radial magnetic field. A single slot maybe provided which runs in the form of a spiral from the area of the electrode center to the area of the electrode edge.

Abstract: Disclosed are thermal transfer elements and processes for patterning solvent-coated layers and solvent-susceptible layers onto the same receptor substrate. These donor elements and methods are particularly suited for making organic electroluminescent devices and displays. The donor elements can include a substrate, an optional light-to-heat conversion layer, and a single or multicomponent transfer layer that can be imagewise transferred to a receptor to form an organic electroluminescent device, portions thereof, or components therefor. The methods offer advantages over conventional patterning techniques such as photolithography, and make it possible to fabricate new organic electroluminescent device constructions.

Abstract: Disclosed is an electrical driving and recovery system for a high frequency environment. The recovery system can be applied to drive present day direct-current or alternating-current loads for better efficiency. It has a low-voltage source coupled to a vibrator, a transformer and a bridge-type rectifier to provide a high voltage pulsating signal to a first capacitor. Where a high-voltage source is otherwise available, it may be coupled directly to a bridge-type rectifier, causing a pulsating signal to the first capacitor. The first capacitor in turn is coupled to a high voltage anode of an electrical conversion switching element tube. The switching element tube also includes a low voltage anode which is connected to a voltage source by a commutator and a switching element tube. Mounted around the high voltage anode is a charge receiving plate which is coupled to an inductive load to transmit a high voltage discharge from the switching element tube to the load.

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.