Abstract: A monochromic, multi-color and full-color cold cathode fluorescent display (CFD), comprises of: some shaped white or multi-color or red, green, blue three primary color cold cathode fluorescent lamps (CCFL), reflector, base plate, temperature control means, luminance and contrast enhancement face plate, shades and its driving electronics. CFD is a large screen display device which has high luminance, high efficiency, long lifetime, high contrast and excellent color. CFD can be used for applications both of outdoor and indoor even at direct sunlight, to display character, graphic and video image.

Abstract: In a method of driving an AC-type plasma display panel in which a first insulation substrate and a second insulation substrate are disposed so as to be opposed to each other, pairs of scanning electrodes and sustaining electrodes covered with a dielectric layer and a protective layer are arranged on the first insulation substrate and at least data electrodes are arranged on the second insulation substrate so as to be orthogonal to the pairs of scanning and sustaining electrodes, immediately after termination of application of a sustaining pulse voltage to one of the scanning electrodes and the sustaining electrodes, the sustaining pulse voltage is applied to the other.

Abstract: The present invention relates to a plasma generation method of a plasma display panel. The plasma display panel comprises a first substrate and a second substrate positioned in parallel with each other, an ionizable gas filled between the two substrates, and a plurality of first, second, third and fourth electrodes installed on the two substrates. The first and second electrodes are alternately installed in parallel on the first substrate. The third electrodes are installed on the second substrate perpendicular to the first and second electrodes. An area between one of the third electrodes and a pair of neighboring first and second electrodes define a display unit for generating plasma from the ionizable gas in the display unit and driving the plasma. The third electrode of each display unit is used for determining if the plasma within the display unit should remain.

Abstract: A plasma display panel that is adapted to reduce the power consumption and the EMI and to prolong a life thereof. In the panel, common terminals are used in first and second sustain electrode lines arranged on a pixel cell matrix to keep a discharge in pixel cells. The common terminals simultaneously apply a driving signal to each of two sustain electrode lines, thereby charging electric charges in next line pixel cells during maintaining the discharge at one line pixel cells.

Abstract: A method of driving an AC type PDP according to the present invention includes a full screen write step of applying a write voltage higher than a discharge starting voltage to respective cells constituting a screen of the PDP to cause a discharge in the respective cells for accumulation of wall charges therein, the method comprising a write preparation step of applying to the respective cells an auxiliary write voltage lower than the discharge starting voltage and having the same polarity as that of the write voltage to cause a discharge in a charged cell having wall charges accumulated before the application of the auxiliary write voltage for inversion of the polarity of a wall voltage in the charged cell, the write preparation step being performed prior to the full screen write step, wherein the application of the write voltage in the full screen write step is performed within a period during which space charges resulting from the discharge caused in response to the application of the auxiliary write voltag

Abstract: The present invention relates to a plasma display device which limits a generation of electromagnetic wave. The plasma display device has first and second drive circuits for applying a drive voltage to first and second display electrode pair. Further, a direction of a charge current flowing at said first display electrode pair when said drive voltage is applied by said first drive circuit is opposite on said plasma display panel to a direction of a charge current flowing at said second display electrode pair when said drive voltage is applied by said second drive circuit. According to the present invention, a transitional charge/discharge current, which is generated upon the application of a drive voltage to one of the display electrodes, and a light emission discharge current flow in opposite directions on the panel. Thus, electromagnetic waves that are generated by the inductances of the display electrode pair cancel each other out.

Abstract: The address discharge in a plasma display device provided with a triple-electrode surface-discharge AC plasma display panel is controlled such that a potential difference occurring across a discharge slit between first and second electrodes selected for display is smaller than a potential difference occurring across a non-discharge slit between the first electrode not selected for display and the second electrode selected for display.

Abstract: Energy recovery sustain circuit for an AC plasma display panel, is disclosed, having first, and second energy recovery sustain driving parts for supplying sustain pulses of Vo volt to a load capacitor in the AC plasma display panel, each including an output terminal, an inductor, a first capacitor, a second capacitor, first capacitor discharging means, second capacitor discharging means, first capacitor charging means, second capacitor charging means, first to fourth voltage sustaining means, thereby, since a plurality of capacitors are provided for temporary storage of a discharge energy of the load capacitor, which is charged back to the load capacitor many times, the present invention has an advantage in that a power consumption of the panel can be reduced than the background art panel in a sustained driving, the system giving and taking charge and discharge energies to/from the load capacitor provided in the present invention allows linear compensation of the capacitance of the load capacitor, and as the

Abstract: Disclosed is a drive method that ensures normal display on a stable basis for a plasma display panel in which sustaining discharge pulses that are mutually out of phase are applied to adjoining slits in order to initiate sustaining discharge, and to thus specify display slits between an Y electrode and X electrodes across the Y electrode. A plasma display device has a display panel including first and second electrodes arranged in parallel with one another and third electrodes arranged to be orthogonal to the first and second electrodes. A slit coincident with a line formed by discharge cells is selected by applying a scanning pulse and addressing signal at an addressing step, and sustaining discharge is initiated in the selected slit at a sustaining discharge step. According to the drive method for the plasma display device, first and second slits are defined between a second electrode and first electrodes on one side and the other side of the second electrode.

Abstract: A plasma-addressed liquid crystal display device owns a flat panel structure such that a liquid crystal cell and a plasma cell are stacked to each other via an intermediate glass thin plate. The liquid crystal cell is equipped with a column-shaped data electrode and a liquid crystal layer. The plasma cell is equipped with a discharge channel constituted by one pair of an anode electrode and a cathode electrode. A scanning circuit is connected to the plasma cell to apply strobe pulses to the respective discharge channels in a row scan operation. A drive circuit is connected to the liquid crystal cell to apply a drive voltage to the data electrode D in synchronism with this row scan operation. The drive circuit includes a control means for controlling an application of a drive voltage in correspondence with the application timing of the strobe pulse, thereby suppressing an occurrence of unfavorable localized discharge.

Abstract: A method for driving an AC-driven plasma display panel (PDP) having a three-electrode surface discharge structure constructed to have a first electrode and a second electrode both extending in a direction of a row line of elements arranged in matrix and a third electrode extending in a direction of a column line of the elements, the method including the step of applying, upon displaying images in time sequence, erase voltage pulses of different polarities for erasure to the second electrode and the third electrode so that an effective voltage exceeds an opposition discharge start voltage only in the case where a wall voltage of a predetermined value or higher is superposed on the voltage pulses, during a period from the end of sustaining the light-emission discharge for display for an image to the beginning of addressing for a next image.

Abstract: In a method for driving a display device, by which energy stored in a plurality of electrodes serving as a capacitive load is recovered through switches, current paths for charging said electrodes from a charge supplying source differ from current paths for discharging the electrodes for the energy recovery.

Abstract: An AC plasma panel display includes front and back panels that respectively support a first parallel electrode pattern and a second orthogonally oriented, parallel electrode pattern. The electrode patterns define a display area and both patterns are covered by dielectric layers. A dischargeable gas is positioned between the dielectric layers in the known manner. Driver circuitry is coupled to both electrode patterns for creating a spatially continuous gas discharge along at least one continuous electrode of one electrode pattern and across the entire display area. The driver circuitry scans the spatially continuous gas discharge across remaining parallel electrodes of the one electrode pattern so as to scan the entire display area. A further electrode is in DC conductive communication with the gas and is positioned outside of the display area but in contact with the spatially continuous gas discharge during its scanning action.

Abstract: This invention is a resistive layer (112, 122) for electrodes (30, 62) comprising at least one partially conductive compound and describes processes for coating the electrodes by way of cataphoretic deposition and/or screen printing of particles of at least one partially conductive compound. A second class of particles, known as a "frit," is also deposited or screen printed. In the subsequent one hour firing, these particles melt and thereby bond the partially conductive compound particles to the electrodes. This invention is also plasma addressing structures (110, 120) in which particles of at least one partially conductive compound are deposited on the electrodes of the display by cataphoretic deposition and/or screen printing. The resulting electrode structures limit and uniformly distribute discharge currents (102) in the operation of ionizable gaseous medium (90) devices, such as plasma addressed liquid crystal displays.

Abstract: In a memory drive system of a DC type of plasma display panel, scan signals are applied to scan electrodes connected to the DC type of plasma display panel, with the scan signals each comprising a priming scan pulse for generating the priming discharge, a write scan pulse for generating the write discharge, and a sustain pulse train for generating the sustain discharge. The priming scan pulse, the write scan pulse and the sustain pulse train are sequentially shifted on a time basis for each scan signal. To each of the data electrodes connected to the DC type of plasma display panel, a data signal is applied in which, only when the write discharge is not to be generated, is a non-write pulse formed, which offers a turn-off level during an applying period of time for the write scan pulse, and which maintains a turn-on level when the write discharge is to be generated and during other periods of time except the applying period of time for the write scan pulse.

Abstract: A liquid crystal cell and a plasma cell are layered together with a dielectric sheet in between. Data electrodes (column electrodes) are constructed to form parallel columns on the underside of an upper substrate in a display cell. Discharge channels filled with ionizable gas are constructed in parallel rows in a plasma cell. Row electrodes are constructed on the upperside of a lower substrate corresponding to each of the discharge channels, and reference electrodes to which reference voltages are applied, are constructed inside each of the discharge channels. Data voltages are applied to the data electrodes and drive pulses are applied to the row electrodes. The polarities of the data voltages are changed so as to be opposite to the polarities of the drive pulses with respect to the reference voltages. Each time the polarities of the drive pulses are inverted, plasma discharges are generated in the discharge channel corresponding to the row electrodes to which the drive pulses are applied.

Abstract: Disclosed herein is a plasma addressed display device which can adaptively control a voltage to be applied to each discharge channel, thereby suppressing an excess applied voltage. The plasma addressed display device includes a flat panel as a display. The flat panel has a laminated structure consisting of a plasma cell having a plurality of rows of discharge channels and a display cell having a plurality of columns of signal electrodes. A drive circuit sequentially supplies an applied voltage to a cathode in each discharge channel to generate a plasma discharge, thereby performing line-sequential scanning. A signal circuit supplies an image signal to each signal electrode in synchronism with the line-sequential scanning. A constant-current circuit operates so that a constant discharge current flows after the generation of the plasma discharge in each discharge channel. A detecting circuit samples a discharge voltage during flowing of the constant discharge current in each discharge channel.

Abstract: A plasma display panel has a matrix of plural first straight electrodes and plural straight second electrodes, respectively crossing each other, and a unit color element located at a crossing point of the first and second electrodes. A plurality of separator walls are spaced apart from each other and extend along the second electrodes, dividing a discharge space into a plurality of channels extending along respective, second electrodes. The separator walls undulate with a fixed periodicity so as to define alternating wide and narrow portions aligned along each channel and the respective first electrode. A fluorescent material is coated in each channel, the colors emitted from the fluorescent material being identical in each channel. A gas discharge takes place selectively at the wide portions in cooperation with the respective first and second electrodes.

Abstract: The plasma display panel driver circuit disclosed includes a panel inter-electrode capacitor, a charging/discharging circuit, and a voltage clamp circuit. The panel inter-electrode capacitor is provided between scanning and sustain electrodes of a panel. The charging/discharging circuit is connected in parallel with the panel inter-electrode capacitor and formed by a combination of a coil, FET switches and reverse current blocking diodes. The voltage clamp circuit includes four switches connected to terminals of the panel inter-electrode capacitor. The panel inter-electrode capacitor, together with a series circuit of the coil and the FET switches, forms a parallel resonance circuit. The panel inter-electrode capacitor 40 is repeatedly charged and discharged through the control of the switches with switch drive inputs. In the driving of a plasma display panel, ineffective power is reduced when charging and discharging the panel inter-electrode capacitor.

Abstract: A controller for a plasma display having a first drive unit to apply voltage to a sustain electrode of a display unit having a memory function and a second drive unit to apply voltage to an address electrode of the display unit. The first drive unit has a discharge control unit to control the discharge wave form of the voltage applied to the sustain electrode of the display unit. The discharge control unit has a delay element and a switching element connected in series between sustain electrodes. Alternatively, the control unit has a delay element and a switching element connected in series between the sustain electrodes and a constant voltage discrimination element connected in parallel with the delay element.

Abstract: A method for driving a plasma display panel in which a plurality of discharging cells each being comprised of an anode, a sustaining anode, a triggering electrode and a cathode is arranged in a form of matrix, comprises trigger discharging step, trigger discharge extinguishing step, primary discharge step, discharge sustaining step and discharge extinguishing step. Accordingly, the discharging can be prevented in case of no data given.

Abstract: A drive system for a matrix cross point addressing system comprises a first substrate having a transparent first linear electrode array thereon. A second substrate having a second linear electrode array thereon, oriented transverse of the first linear electrode array defines therewith a matrix of cross-points. An array of insulating ribs on the second linear electrode array defines an array of channels and an ionizable gas medium fills the array of channels, each channel of the array being aligned with a transparent electrode of the first linear electrode array, respectively. A layer of electric field responsive material, such as a liquid crystal, is sandwiched between the transparent first linear electrode array and a dielectric layer.

Abstract: A display device containing an LCD light shutter front end to modulate light transmittance and a substantially flat gas discharge back end unit containing multiple gas discharge tunnels. The back end unit contains priming means to allow fast ignition of gas discharge and control means to allow independent discharge control of each discharge tunnel. The control circuit is further simplified to allow a small number of driving signals to control a large number of discharge tunnels. This backlight structure allows color light pulses to be generated in synchronization with the scanning operation of the front end unit. The combined operation of these two units can produce color images through time sequential color mixing principle. Compact and power efficient color display panels can be produced without the use of color filter in the LCD.

Abstract: A scanning flat back light source for use with light valve devices such as liquid crystal displays. It is formed by an array of parallel fluorescent tubes with fluorescent layers therein. One end of each tube is provided with an electrode and the other end connected together through a transverse chamber to form a single vacuum unit. When electrical potential is applied across electrodes in two different chambers, the two chambers and the portion of the transverse chamber connecting the two chambers form a fluorescent lamp where gas discharge produces ultraviolet light that causes a fluorescent layer on the inside walls of the tubes to produce single-color or multi-color light.