Abstract:
The inventive alternating current colour plasma panel and method for controlling said panel are used for developing individual means for displaying on alternating current colour plasma panels (CPP) and modules for patching displays providing high intensity, luminous efficiency, increased contrast and image quality and ensuring reliable operation and control. Said invention is characterised in that a scanner electrode is embodied in the form of two electrical conductors of a display element which are disposed at an optimum distance with respect to each other, making it possible to input information with the aid of an additional discharge gap occupying a small part of the area of the display element, thereby providing said contrast. The embodiment of the control electrodes in the form of buses provided with conductors makes it possible to increase gas ionisation volume and reduce the statistical delay of the discharge. The additional discharge gaps introduced into the oversized display elements eliminate flicker in the luminous display elements.
Abstract:
If Wb, Wg, and Wr are the widths of blue, green, and red discharge cells, and Db, Dg, and Dr are the widths of the address electrodes (15b, 15g, 15r) corresponding to the respective colors, the relationships among them are given by Wb>Wg>Wr, and Db>Dg>Dr. Therefore the amounts of charge accumulated in the respective color discharge cells can be adjusted by write discharge, and the complete operation write voltages of the discharge cells of the colors are uniformed. As a result, an AC plasma display panel free from erroneous discharge and discharge flicker and having a high display quality, especially an improved white displays quality is provided.
Abstract:
The operation ratio of each subfield is measured by a subfield operation ratio measuring instrument. A subfield processor controls a scan driver and a sustain driver so that the collecting time of the sustain pulse and the resonance time and sustain period of LC resonance increase with a decrease of the measured subfield operation ratio of each subfield.
Abstract:
In a three-electrode AC plasma display panel, a plurality of X electrodes (22) and a plurality of Y electrodes (23) are alternately arranged parallel to each other on one of two, front and rear insulating substrates (20, 21) opposing each other, and a plurality of data electrodes (29) are arranged on the other insulating substrate to cross the X and Y electrodes (22, 23) at right angles. In this panel, cell separation partition walls (33) are arranged on the front insulating substrate, on which the X and Y electrodes (22, 23) are arranged, along the X and Y electrodes (22, 23). In a driving method for the three-electrode AC plasma display panel, progressive display is performed depending on whether discharge simultaneously occurs between all the adjacent pairs of X and Y electrodes (22, 23).
Abstract:
In each sub-field of each line in a plasma display, it is judged whether all the discharge cells or part of the discharge cells the number of which is a predetermined one or more on the line do not emit light. If not, either the voltage applied to the scan electrodes of the line or the voltage applied to the sustain electrodes is held at a predetermined level, or pulses of the same phase as that of the sustain pulses applied to the sustain electrodes (13) in place of the maintenance pulses applied to the scan electrodes (12) of the line are periodically applied to reduce the charge/discharge current and the generation of electromagnetic waves.
Abstract:
A method for driving a display panel so as to control gas electric discharge in each of the display cells arranged in a matrix by disposing a common electrode and an individual electrode in each cell, applying a display pulse to the common electrode, and applying a control voltage for controlling the period of the electric discharge in each display cell to each individual electrode ; comprising as an initialization sequence the step of applying a reset pulse of opposite polarity to that of the display pulse to the common electrode and the step of then applying an initializing single pulse of the same polarity as that of the display pulse to the common electrode.
Abstract:
A method of maintaining/driving the discharge of an AC discharge display in which at least one of a pair of discharge electrodes is covered with a dielectric layer. A pulse Vy is a narrow width pulse whose pulse width is shorter than a period for which the priming effect of generated charged particles or quasi-stable atoms persists in a discharge space. A pulse Vx is a wide width pulse which is generated before the priming effect produced by the pulse Vy disappears and at about the time when the pulse Vy is generated and has a pulse width long enough for the discharge to stop due to wall charges generated on the dielectric layer. The pulses Vx and Vy are continuously applied between the pair of electrodes to generate a sustained discharge and the influence of the collision of ions against the discharge electrodes and the phosphor is reduced.