Abstract:
A surface discharge type plasma display panel has a dielectric layer facing to a discharge gas space and a pair of sustaining electrodes embedded in the dielectric layer and disposed apart from each other by a discharge gap on one of the substrates spaced parallel to each other at the discharge gas space. The dielectric layer includes a pair of first thickness portions formed on far ends of the electrodes from the discharge gap respectively which are larger than a second thickness portion on facing near ends of the facing electrodes. The dielectric layer is provided with a depth from its surface to the substrate larger than that on the second thickness portion between adjacent the electrodes. This plasma display panel prevents any useless expansion of the surface discharge over the sustaining electrodes. The discharge current is reduced and the electrical load on the deriving circuit for the surface discharge PDP decreases to save a power consumption and further the emission efficiency of the surface discharge type PDP is improved.
Abstract:
A method of driving an indicator tube comprised of a pair of common memory electrode plates and independent address XY electrode groups separate therefrom comprises the steps of, in a case where an address discharge is to be carried out by the XY electrode groups from a state that no wall charge uniformly exists on wall surfaces of the pair of memory electrodes in all cells on a picture screen or on a line to be addressed, holding one of the pair of memory electrodes at a potential higher than a discharge space potential generated by an address discharge in a range such that a discharge is not caused on the low voltage side of the address electrode during an address period, holding the other of the pair of memory electrodes at a potential lower than the discharge space potential in a range such that a discharge is not caused on the high voltage side of the address electrode, selectively accumulating charged particles generated by the address discharge in cells disposed at the positions corresponding to an image as negative and positive wall charges, and continuously effecting a display discharge, or memory discharge utilizing a presence or absence of the wall charges as position information.
Abstract:
A fluorescent gas-discharge color display panel, in which a fluorescent material is excited by a gas-discharge therein, contains a three-component gas mixture of neon, argon and xenon as the discharge gas. Typically, the argon gas component is in the range of from approximately 5 percent to approximately 80 percent, and that of the xenon gas from a minimum sufficient to maintain the Penning effect up to approximately 10 percent. The argon gas component contributes to the gas mixture producing a pure and high peak of green light spectrum and reduces the orange light spectrum emitted directly by the neon gas discharges. Other characteristics, such as operating voltages, brightness, luminous efficacy, and the panel operating life, are satisfactorily maintained. The improved color purity is advantageous for both single and multiple color display by the excited fluorescent material or materials.
Abstract:
A gas discharge panel includes several pairs of column (X) electrodes arranged on a first substrate and several pairs of row (Y) electrodes arranged on a second substrate, the column and row electrodes being orthogonally oriented and in spaced, opposed relation to define therebetween a gap filled with an ionizable gas. In a first driving configuration, a corresponding electrode of each pair of (X) electrodes is selectively driven by an (X) address driver and similarly a corresponding one of each of the (Y) electrode pairs is selectively driven by a (Y) address driver. The other electrode of each of the (X) and (Y) electrode pairs then is connected in common to respective (X) and (Y) sustain voltage driver terminals. In a further embodiment, each of the (X) and (Y) electrode pairs is arranged in corresponding groups of electrode pairs, each group including a common number of such pairs. First electrodes of each pair of each group are connected to a common output terminal of an address and sustain voltage driver; thus, plural address and sustain voltage driver outputs corresponding to the plural groups are employed for each of the (X) and (Y) electrode pairs. The second electrodes of corresponding pairs of the plural groups are connected to respectively corresponding, further common output terminals of address and sustain voltage drivers; thus, a plurality of further common terminals corresponding to the number of electrode pairs in each group are provided, as to each of the (X) and (Y) electrodes. The panel as thus configured affords decoding of addressing signals applied to the common terminals by means of plasma coupling within the panel whereby the discharge point or cell defined by a desired electrode of each of the column and the row electrode pairs can be addressed selectively. A further embodiment provides shifting of the display to successive positions in either the (X) or (Y) directions.
Abstract:
An addressable gaseous discharge device utilized for information display comprises a pair of spaced parallel oppositely positioned insulating walls forming between them a gas cell filled with ionizable gas. At least one of the insulating walls is transparent. The perimeters of the insulating walls are hermetically sealed. Field electrodes mounted on the insulating walls apply a microwave electric field to the gas cell and field electrodes mounted on the insulating walls partly and selectively apply a magnetic field in a direction crossing the microwave electric field. A glow discharge occurs in a selected part of the gas cell when the two applied fields meet the condition of cyclotron resonance of an electron.
Abstract:
A plasma display panel can reduce a discharge delay in address discharge, thereby performing high-speed addressing in a stable manner. A front substrate (1) and a back substrate (2) are disposed to face each other, and a discharge space (3) is formed and partitioned by barrier ribs (10) so as to form priming discharge cells (17) and main discharge cells (11). A clearance (19) is provided between the barrier ribs (10) of the priming discharge cells (17) and the front substrate (1), and priming particles generated in the priming discharge cells (17) are supplied to the main discharge cells (11) through the clearance (19), whereby a PDP performing high-speed addressing is obtained.
Abstract:
A crystalline magnesium oxide layer (5) (15) is placed facing the discharge space (S) between the front glass substrate (1) and the back glass substrate (6). The crystalline magnesium oxide layer (5) (15) includes crystal powder having particle-size distribution in which a crystal of a predetermined particle diameter or larger is included at a predetermined ratio or higher, of powder of a magnesium oxide crystal causing a cathode-luminescence emission having a peak within a wavelength range of 200nm to 300nm upon excitation by an electron beam.
Abstract:
A plasma display panel (PDP) which can realize low voltage driving, to thus reduce power consumption, and which can improve luminous efficiency through a long gap. The PDP includes a first substrate and a second substrate opposing each other, barrier ribs arranged in a space between the first substrate and the second substrate to define a plurality of discharge cells, phosphor layers formed in each of the plurality of discharge cells, address electrodes formed on the second substrate, and display electrodes provided on the first substrate. The display electrodes include igniter electrodes having ends protruding towards insides of the discharge cells, the igniter electrodes opposing the address electrodes within the discharge cells.
Abstract:
A plasma display apparatus which improves the contrast of images displayed thereon. A plurality of paired row electrodes Xi, Yi are formed in parallel with each other in a surface discharge AC plasma display apparatus. A plurality of column electrodes are formed facing to the paired row electrodes through a discharge space, and extend perpendicularly to the paired row electrodes so as to define a unit light emitting region including an intersection formed every time the column electrode cross with the paired row electrodes. A gas mixture including Ne.Xe is sealed in the discharge space at a pressure ranging from 400 torr to 600 torr. The row electrodes in the unit light emitting region are formed to have a width w of 300 mu m or more. The intensity of light emitted by discharge not related to display is suppressed.