摘要:
A common electrode and an individual-electrode are provided in plural pairs on a first transparent substrate, and recesses are formed in a second substrate in positions corresponding to the pairs of electrodes to define discharge cells of display cells. The display cells of a display panel can be individually driven on the cell-by-cell basis and the planar panel has a reduced thickness. A driving circuit for changing luminance in accordance with the number of pulses applied to the individual electrode within a unit time to make gradation display is provided, and gradation control is achieved by performing switching control for each of the individual electrodes provided independently of one another in one-to-one relation to the display cells. A voltage pulse is applied to the individual electrode to reverse the polarity of wall charges accumulated on a dielectric layer, and a voltage pulse is then applied to the common electrode so that an electric field of the wall charges caused upon the reversal of the polarity is additionally applied. Thereby provided are a planar display panel which can set a large control margin in the display operation, ensure stable display, and present gradation display with high reliability and quality, as well as a manufacturing method, a controller, and a driving method for the planar display panel.
摘要:
A highly reliable plane display panel which has a large operating margin for making displaying operations and can stably display high-quality pictures, a method for manufacturing the panel, a controller for controlling the panel, and a method for driving the panel. The plane display panel is composed of a front glass substrate (1) provided with common electrodes and individual electrodes (3, 3a and 3b) which can be driven individually at every display cell, and a back glass substrate (10) having recessed sections which become discharging spaces. At the time of driving the plane display panel, the polarity of the wall charges accumulated on a dielectric layer (5) during displaying operations is inverted by applying voltage pulses to the individual electrodes (3) separately from the displaying operations. Thereafter, the electric field of the wall charges having the inverted polarity is added to the driving voltage, so that discharge can surely take place by applying voltage pulses for display to the electrodes (3).
摘要:
A video display monitor, such as a plasma monitor, which uses a subfield method which overlaps weighted multiple binary video images in a time base for display. The stable driving of a plasma display panel may be assured and display in the 256 grey-level may be maintained although vertical synchronizing frequency of the input video signal changes. A vertical synchronizing measurement unit measures the vertical synchronizing frequency of the video signal, and a subfield number adjustment unit adjusts the number of subfields in accordance with a measured vertical synchronizing frequency. The stable driving of the plasma display panel and display in grey levels may be assured by selecting a ROM table with an output bit width equivalent to the number of subfields to be output from multiple ROM tables used for converting the number of bits in the input signal.
摘要:
A method of memory-driving a DC gaseous discharge panel and circuitry therefor are disclosed. To generate a write discharge on a desired display cell, while a scan pulse Pscn having a pulse width of τscn is applied to a cathode associated with the cell, a display anode is held in its high level or ON level. To prevent the write discharge from being formed, while the scan pulse Pscn is applied to the cathode, a non-write pulse Pnw having a pulse width of τnw is applied to the display anode. The pulse width τnw is selected such that the duration of the pulse Pnw (τscn - τnw) is shorter than the statistic time lag of the start of a discharge at which a discharge cell generating a write discharge first appears. For a sustain discharge following the write discharge, sustain pulses Psus are applied to the cathode after the scan pulse Pscn for a predetermined period of time such that they do not coincide with the non-write pulses as to the timing. As a result, stable discharge and therefore high quality display is insured even when the scanning period must be reduced in order to, e.g., enlarge a screen.
摘要:
A method for driving a gas discharge display panel consists of the steps of applying a writing pulse on a specific display electrode line selected from display electrode lines arranged side by side in the panel, applying a scanning pulse on a specific scanning electrode line selected from scanning electrode lines which are arranged side by side and cross the display electrode lines to produce writing gas discharge in cooperation with the writing pulse in a specific discharge cell arranged at an intersection space between the specific display electrode and the specific scanning electrode line, and applying a series of maintaining pulses subsequent to the scanning pulse on the specific scanning electrode during only a maintaining period to produce maintaining gas discharge subsequent to the writing gas discharge in the specific discharge cell, the maintaining gas discharge being intermittently produced in synchronism with the maintaining pulses. The scanning pulse is applied in synchronism with the writing pulse. The maintaining gas discharge is stopped without applying any pulse after the maintaining period passes.
摘要:
A modulated pulse generator (113) included in a plasma display (4) generates a modulated pulse (MP) whose pulse widths are gradually increased for a higher luminance. An anode driver (118) for a plasma/display panel (119) includes a pulse width generation (213) for pulse-width modulating a display data latched by a latch circuit (212) by the modulated pulse (MP) and outputs anode pulses (ANPO through ANP639) with increased width toward high luminance which is increased in accordance with the gradation level of pixel data.
摘要:
Die Erfindung bezieht sich auf ein Verfahren zur Reduzierung der Untergrundhelligkeit im unteren Bildbereich einer Gasentladungsanzeigevorrichtung. Mit diesem Verfahren soll die Reduzierung der Bildschirmhelligkeit vermieden werden. Die Erfindung sieht hierzu vor, daß das Plasma nach dem Bildende (unterem Bildbereich) rückwärts zur ersten Kathode getastet wird. Das erfindungsgemäße Verfahren wird bei flachen (Plasma-) Bildschirmen angewendet.
摘要:
A PDP driving method that reduces the reset voltage of the PDP driving waveforms to make it possible to use low-voltage elements and to achieve high contrasts is disclosed. Since conventional PDP waveforms require very high reset voltages, it causes a problem of intense background light emissions, low contrasts, use of high-voltage components, and increased circuit costs. According to the driving waveforms of the present invention, relative voltage differences between the address electrode and the X electrode and between the X electrode and the Y electrode are considered to design waveforms of low reset voltages, thereby providing high contrasts and low-cost circuit.