US3618071A - Interfacing circuitry and method for multiple-discharge gaseous display and/or memory panels - Google Patents

Interfacing circuitry and method for multiple-discharge gaseous display and/or memory panels Download PDF

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US3618071A
US3618071A US699170A US3618071DA US3618071A US 3618071 A US3618071 A US 3618071A US 699170 A US699170 A US 699170A US 3618071D A US3618071D A US 3618071DA US 3618071 A US3618071 A US 3618071A
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discharge
voltage
pair
unidirectional
potential
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William E Johnson
Larry J Schmersal
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Techneglas LLC
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Owens Illinois Inc
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J11/00—Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
    • H01J11/10—AC-PDPs with at least one main electrode being out of contact with the plasma
    • H01J11/12—AC-PDPs with at least one main electrode being out of contact with the plasma with main electrodes provided on both sides of the discharge space
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/291—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
    • G09G3/294—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes for lighting or sustain discharge
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/28—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/297—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels using opposed discharge type panels
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
    • G11C11/26—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using discharge tubes
    • G11C11/28—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using discharge tubes using gas-filled tubes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/64—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors having inductive loads
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses
    • H03K5/02—Shaping pulses by amplifying
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0228—Increasing the driving margin in plasma displays

Definitions

  • the present invention interface circuit and method for supplying operating potentials to multiple gas discharge display/memory panels and, in particular, relates to a circuit and method for adding a high-voltage unidirectional pulse to source of sustaining potential at selected time intervals to control operation of selected individual discharge units in a multipie-unit discharge gas display and/or memory panel.
  • the objects of the invention include the provision of a simplitied low-cost interface circuit between a low-voltage addressing logic circuitry and a high-voltage gaseous discharge display and/or memory device; the provision of a method of reducing the time required to effect turn-on and turnoff ofindividual discharge units in a panel or such discharge units; the prevention of interaction between on-oh signals and sustaining signals to the discharge panel, and a method of utilizing the time characteristics of individual discharge units of a matrix display panel of the electric charge storage type.
  • gas discharge display and/or memory panels of the type with which the present invention is concerned are characterized by a gaseous medium, usually a mixture of two gases at a relatively high gas pressure, in a thin gas chamber or space between a pair of opposed dielectric charge storage members which are backed by conductor members, the conductor members backing each dielectric member being transversely oriented to define a plurality of discrete discharge volumes and constituting a discharge unit.
  • the discharge units may be additionally defined by physical structure such as perforated glass plates and the like.
  • physical barriers and isolation members have been eliminated.
  • FIGS. Mr and t8 are diagrammatic illustrations of a gas discharge pane] and associated circuit for carrying out the invention
  • Fit is an electrical schematic of a preferred form ofpulse generating circuit incorporated in the invention
  • l ltifi. tilt and lb illusirate a gas discharge display/memory panel disclosed in the above-identified .ter et al. patent, in which glass support members ill and have formed on their opposing surfaces conductor arrays ll?) and respectively.
  • Dielectric members or coatings id and is have surfaces l7 and ill, respectively, which form charge storage surfaces for storage of charges (electrons and ions) generated upon discharge (ionization) of individual discharge units, respectively.
  • the surfaces l? and of dielectric members M and 16, respectively, are spaced apart by spacer to form a thin gas chamber or space 2t) and spacer it" or an additional sealant 1158 may be utilized to form a complete hermetic seal for the gas chamber
  • An ionizable gas medium is placed in gas chamber or space at a pressure of about one-half atmosphere or greater. Support members it) and ill are of sufficient size and strength to withstand forces due to any pressure differentials between pressure of the gas within space 2t) and ambient pressure and with a minimum deflection.
  • the gas may be conditioned (e.g., provided with a supply of free electrons) for the ionization process by application of an initial tiring potential to a selected pair of conductors tor sufficient time to effect an initial discharge in a discrete gas volume, as for example a discharge at the discharge unit consisting of the crossing or shadow area of conductors llZ-l and ill-d1, the dielectric on those conductors at those crossings or shadow areas and the discrete volume of gas therebelween, the volume of gas permitting photonic communication between all discharge units so that photons which strike or im pact the dielectric surfaces produce or cause the release of electrons.
  • a discrete gas volume as for example a discharge at the discharge unit consisting of the crossing or shadow area of conductors llZ-l and ill-d1
  • the dielectric on those conductors at those crossings or shadow areas and the discrete volume of gas therebelween the volume of gas permitting photonic communication between all discharge units so that photons which strike or im pact the
  • the gas may be conditioned by providing an exterior source of ultraviolet radiation for producing by photoelectric emission free electrons for the ionization process or by placing a radioactive material in the glass or gas space which likewise can etilect the presence of sufficient free electrons within the gas space for ionization at uniform potentials for a given gas, pressure, panel configuration, etc.
  • a gas volume whether unconfined as in the above-referenced Baker et al. patent: or confined by a honeycomb or cellular structure as in the prior art
  • individual discharge units may be turned on" (a sequence of momentary discharges on alternate halt cycles of applied alternating potential following an initial discharge) and off (termination of the sequence) by many different waveforms, the simplest of which is the sinusoidal voltage waveform. Basically, the only condition other than the voltage waveform is that the discharge unit be conditioned such that it is responsive to the applied voltage.
  • the pulse generator circuit for addressing a conductor ofan individual discharge unit is disclosed in FlG. 2 and includes a first transistor Ql having base 3d, collector 3i and emitter 32 electrodes with collector electrode Ill connected directly to a direct current supply Vll and the emitter electrode 32 con nected to ground through resistance 33.
  • An input logic signal 34 (about 4 volts having a duration of about [00 nanoseconds) is applied to base electrode Bill.
  • This transistor Ql operates as an amplifier and its output is coupled from emitter 32 directly to base electrode 3d of a second transistor Q2.
  • the emitter electrode oi transistor Q2 is connected directly to ground and collector electrode is connected through a small series resistor 39 to primary winding ilt of a transformer Tl.
  • the upper end of the primary winding of transformer Tl is connected to relatively high direct current voltage V2 and a diode D11 is connected in shunt or parallel with the primary winding ill of transformer Tl.
  • This diode D1 also serves to protect the transistor Q2 from large transients which may occur during the turn off operation.
  • the input logic pulse 34 is made to have a duration less than half the period to take into account the transistor stored charge which may delay the turning off time of the transistor after the input signal is removed.
  • Addressing logic circuit 61 while complex is conventional and may be of the line scan type or random access type, either of which can supply logic pulses 34 at selected time intervals.
  • the secondary winding 42 of the transformer T1 is in series circuit with the sustaining signal generator 29 and the line (conductor of the conductor array) being addressed so that the two voltages are added.
  • the resonant frequency of the sustaining generator and the resonant frequency of the pulse generator are preferably made different so as to reduce power drain and provide maximum signal for application to the panel.
  • the on-off pulse is adjusted for about a l-microsecond duration and the sustaining signal period is about microseconds, however, the invention is not limited to these particular time ratios.
  • the display panel requires a continuous signal applied to all lines, which is referred to as the sustaining signal or voltage.
  • continuous signal it is meant that the voltage be periodic so that it may be of the simple sinusoidal-type or a complex wave shape applied for short time intervals and repeated periodically.
  • the invention will be described in connection with a sinusoidal voltage waveform in the 50 to 500 Hz. range.
  • the same sustaining voltage is applied to all X" lines and a similar voltage is applied to all Y lines but at a 180 phase relationship (see FIG. 3).
  • a capacitance 45 may be connected in shunt with the panel, the larger the panel capacitance change as more discharge units are turned on, being accommodated by a larger shunt capacitance.
  • each line on conductor of a conductor array is provided with a pulse generator 60 (e.g., 60-12-1 60-12-n and 60-13-1 60-13n which receives a trigger input (logic pulse 34) from addressing circuit 61.
  • a pulse generator 60 e.g., 60-12-1 60-12-n and 60-13-1 60-13n which receives a trigger input (logic pulse 34) from addressing circuit 61.
  • a logic pulse is applied simultaneously to pulse generator circuit 60-13-1 and 60-12-1 so that unidirectional pulses are added to the out of phase voltages, respectively, from sustaining voltage generator 29.
  • a synchronization connection 90 between sustaining generator 29 and addressing logic circuit 61 is provided so that the logic pulses 34 occur at proper times with respect to the sustaining voltage from sustaining voltage generator 29.
  • the on-"off" state of a discharge unit is indicated in F168. 4-7 wherein the lower voltage trace 66 is the voltage output from a photomultiplier (not shown) sensing the individual light bursts emitted from a discharge unit.
  • a unit discharges or fires twice per cycle of the applied sustaining voltage.
  • the area of photomultiplier voltage pulse varies with the number of electrons involved in a single discharge, and may be taken as an approximate measure of the change in the discharge unit bias voltage. This bias voltage is not an applied voltage as such but is the result of the collection of electrons and ions on opposing discrete surface areas 17 and 18 at each individual discharge unit.
  • the direction of the electric field resulting from the collection of electrons and ions on such surfaces is opposite to the direction of applied field creating (via ionization) them and hence serve to terminate the discharge and thus, the bias voltage alternates with the alternation in direction of applied field and, in opposite directions thereto.
  • a sinusoidal voltage on a discharge unit is raised in magnitude to the breakdown level (the firing potential) the discharge unit will discharge. If the amplitude of the applied potential is reduced, the discharge unit will continue to stay on and, in fact, the discharge unit will stay on down to some minimum level of sustaining voltage at which point the discharge unit will go off so that if the applied alternating potential voltage is less than the breakdown or firing voltage but greater than the sustaining voltage level the discharge unit will continue to be in a single firing state.
  • This difference between on” and off voltage levels is utilized as an electrical memory and, as noted above, it is due to alternate storage of charges on the surfaces 17 and 18 of dielectric members 14 and 16 to constitute a discharge unit bias or memory voltage.
  • discharge units are arrayed in horizontal rows and vertical columns served by horizontal and vertical conductor arrays it is important to be able to alter the state of one discharge unit while not affecting the status of others. Moreover, for simplicity purposes, it is desirable to utilize a sinusoidal signal that is at or slightly greater than the sustaining level and to utilize additive voltages on certain conductors to modify the status of selected discharge units.
  • FIG. 4 illustrates the turn on sequence in accordance with the invention.
  • the dots 70 are superimposed upon the sustaining signal waveform and symbolize a light-producing momentary or pulse discharge of a discharge unit and the lower traces symbolize or represent the output of a photomultiplier which has been directed or aimed to a given discharge unit.
  • the photomultiplier output has been superimposed or added to the sustaining waveform to indicate individual discharge points or firing times during an applied sustaining voltage and as shown, there will be two discharges or pulses of light produced for every full cycle of applied sustaining voltage (light-producing discharges on positive half-cycles being identified as 751 and light-producing discharges on negative half-cycles being identified as 75N) once the unit has been discharged or fired.
  • the voltage 71 is the output from the pulse-forming circuit which as been added to the sustaining voltage 72.
  • the first discharge 73 is due to the increased applied voltage across the discharge unit (which is the sum of the sustaining voltage and the applied pulse added thereto).
  • the stored charges (which constitute a discharge unit bias voltage) must be eliminated or modified in such a way that the amplitude of applied voltage, which is the constant amplitude sustaining voltage 72, will be insufiicient to effect a discharge.
  • the turn off pulse is identical to the turn on pulse. It has been found that a discharge unit may be turned off in several different ways, depending on the time of application of the turn off pulse with respect to the sustaining voltage. Three turnoff methods are illustrated in N65. 5, s and 7, respectively. These three turn off methods are illustrated in lFlGS. 5, 6 and 7, respectively. in H6.
  • the discharge unit prior to application of pulse the discharge unit is on and discharging in a single firing mode, namely, twice per cycle (as represented by clots 7d and photomultiplier pulses 751i and 75W).
  • the pulse 8f) is synchronized in time so the pulse tip or peak occurs at the point of discharge Till. Due to the applied voltage time characteristics of the applied voltage, the amount of charge transferred is reduced so as to reduce the discharge unit bias voltage below the sustaining level. That is, the amount of charge stored on the dielectric surfaces is insufficient to result in a potential or field which augments the sustaining voltage to produce a discharge. Thus, the discharge unit is turned off. Note that the reduced discharge is indicated by the corresponding photomultiplier pulse 7d and the last photomultiplier pulse is considerably shorter than the previous positive cycle photomultiplier pulses indicating a reduction in stored charge.
  • the second turn of method is illustrated in FIG. 6.
  • This method differs from the first in that the turn off is accomplished by modifying the voltage time characteristics on the next to the last normal discharge. The voltage time characteristics of the applied voltage till is increased on the last positive discharge hill? so as to increase the stored charge and reduce the applied voltage necessary to sustain successive discharge. This modifies the bias voltage on the next negative discharge such that the discharge unit will be left with a bias voltage insufficient to tire on the next positive cycle.
  • the third method of turning of a discharge unit is illustrated in FIG. 7. This method is similar to the first in that turn off is achieved by combining the voltage waveforms of pulse d3 and sinusoidal voltage '72 in such a way as to turn off" the discharge unit at the point of the last discharge. hlOtice, however, that the methods differ in that the former turn of is done on a positive cycle and the latter on the negative cycle.
  • the turn off pulse is applied in such a fashion as to alter the amount of charge produced in one of the discharges, thus altering the bias voltage in such a way as to terminate the sequence of discharges.
  • the high voltage requirement (up to about 1 ltv.) and frequency range of interest (50 to 500 kHz.) determine the current requirements across the panel and shunt capacitance 45.
  • capacitor did may be part ofa series tuned circuit including generator hi and is used to offset both the panel capacitance change and resistive change during a cycle from where no discharge'units of a line are 011" to where all discharge units are on.”
  • generator hi is used to offset both the panel capacitance change and resistive change during a cycle from where no discharge'units of a line are 011" to where all discharge units are on.”
  • unidirectional voltage pulse generator means controlled by said addressing circuit for producing a pair of oppositepolarity high-voltage unidirectional pulses, each having a time duration relatively short with respect to a cycle of said periodic alternating sustaining voltage, and
  • said means controlled by said addressing circuit includes, with respect to the 50 row and column conductor arrays, respectively.
  • said induction device is a transformer having a primary and a secondary winding, said primary winding being connected in series circuit with said source, said secondary winding being connected 65 in series with said source of periodic alternating sustaining voltage,
  • said first potential being a periodically applied alternating voltage of amplitude insufficient to initiate a discharge and generate said charges at any discharge unit, but of sufficient magnitude to sustain one or more discharge units in a discharged state with the aid of said internal bias voltage following an initial discharge therein,
  • a discharge in a hennetically enclosed ionizable gas generates charges alternately collectable on a pair of discrete areas of a pair of means having dielectric surfaces, said dielectric surfaces being backed by row and column conductor arrays, respectively, cooperatively defining a plurality of pairs of opposed discrete charge storage areas and means supplying a pair of oppositely phased periodic alternating sustaining voltage connected to said row and column conductor arrays, respectively, the charges, once created and stored at a pair of said discrete areas, first terminating a discharge within a fraction of a halfcycle of said applied sustaining voltage, and, second, acting with said applied sustaining voltage on the next half-cycle of sustaining voltage to cause a second discharge, and repeating the sequence of discharge for each succeeding half-cycle of applied sustaining voltage, and an addressing circuit for selecting individual ones of said row and column conductors, the improvement comprising,
  • unidirectional voltage pulse circuit means controlled by low-level logic signals from said addressing circuitfor producing a pair of opposite-polarity high-voltage unidirectional pulses, each unidirectional pulse having a time duration relatively short with respect to a cycle of said periodic alternating sustaining voltage, and
  • algebraically adding the next succeeding of said pair of opposite-polarity high-voltage unidirectional pulses having a time duration which is short relative to said alternating voltage, at a time in a half-cycle thereof to rapidly modify the storage of charge at said selected charge storage area and terminate the storage of charges at said selected storage areas to terminate the sequence ofdischarges 8.
  • said circuit means for algebraically adding includes a transformer secondary winding in series circuit with said sustaining voltage supply for a plurality of conductors on said panel.
  • first potential being a periodic alternating voltage of amplitude insufficient to initiate a discharge and generate said charges at any discharge unit, but of sufficient magnitude to sustain said discharge units in a discharged state with the aid of said internal bias voltage following on initial discharge therein,
  • a second unidirectional voltage pulse to rapidly terminate production and alternate collection of charges at said areas defined by said selected conductors and rapidly eliminate said internal bias field.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Computer Hardware Design (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of Gas Discharge Display Tubes (AREA)
  • Gas-Filled Discharge Tubes (AREA)
US699170A 1968-01-19 1968-01-19 Interfacing circuitry and method for multiple-discharge gaseous display and/or memory panels Expired - Lifetime US3618071A (en)

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US69917068A 1968-01-19 1968-01-19

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DE (1) DE1817402C3 (fr)
FR (1) FR1593934A (fr)
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NL (1) NL6818205A (fr)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754150A (en) * 1971-12-23 1973-08-21 Owens Illinois Inc Regenerative sustainer voltage generator
DE2307372A1 (de) * 1972-02-23 1973-09-06 Owens Illinois Inc Vorrichtung zur elektrischen versorgung und verfahren zur verbesserung der arbeitscharakteristik von gasentladungswiedergabe-lampenfeldern
DE2311992A1 (de) * 1972-03-15 1973-09-20 Int Cossputers Ltd Bildanzeigeeinrichtung
US3763468A (en) * 1971-10-01 1973-10-02 Energy Conversion Devices Inc Light emitting display array with non-volatile memory
US3786474A (en) * 1972-03-13 1974-01-15 Owens Illinois Inc Conditioning and writing of multiple gas discharge panel
US3803585A (en) * 1972-03-08 1974-04-09 Fujitsu Ltd Plasma display panel driving system
US3813575A (en) * 1971-11-08 1974-05-28 Sigmatron Inc Electroluminescent display system and method of driving the same
US3851327A (en) * 1973-03-29 1974-11-26 Bell Telephone Labor Inc Light pen detection for plasma display system using specially-timed erase pulse
US3877006A (en) * 1971-11-05 1975-04-08 Thomas Csf Driving method for a gas-discharge display panel and display systems using such a method
US3877008A (en) * 1971-06-25 1975-04-08 Texas Instruments Inc Display drive matrix
US3908150A (en) * 1971-11-08 1975-09-23 Sigmatron Inc Electroluminescent display and method for driving the same
US3969715A (en) * 1973-06-01 1976-07-13 Ibm Corporation Gas panel with improved write circuit and operation
US3973253A (en) * 1972-03-27 1976-08-03 International Business Machines Corporation Floating addressing system for gas panel
US3982155A (en) * 1972-05-18 1976-09-21 Owens-Illinois, Inc. Saturated photon conditioning of multiple gaseous discharge panel
US4056806A (en) * 1968-01-19 1977-11-01 Owens-Illinois, Inc. Interfacing circuitry and method for multiple discharge gaseous display and/or memory panels
DE2725985A1 (de) * 1976-07-02 1978-01-05 Owens Illinois Inc Steuer- und adressierschaltung fuer anzeigende/speichernde gasentladungstafeln
US4591847A (en) * 1969-12-15 1986-05-27 International Business Machines Corporation Method and apparatus for gas display panel
US20030099122A1 (en) * 2001-11-29 2003-05-29 Lg Electronics Inc. Generator for sustaining pulse of plasma display panel
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US4591847A (en) * 1969-12-15 1986-05-27 International Business Machines Corporation Method and apparatus for gas display panel
US3877008A (en) * 1971-06-25 1975-04-08 Texas Instruments Inc Display drive matrix
US3763468A (en) * 1971-10-01 1973-10-02 Energy Conversion Devices Inc Light emitting display array with non-volatile memory
US3877006A (en) * 1971-11-05 1975-04-08 Thomas Csf Driving method for a gas-discharge display panel and display systems using such a method
US3813575A (en) * 1971-11-08 1974-05-28 Sigmatron Inc Electroluminescent display system and method of driving the same
US3908150A (en) * 1971-11-08 1975-09-23 Sigmatron Inc Electroluminescent display and method for driving the same
US3754150A (en) * 1971-12-23 1973-08-21 Owens Illinois Inc Regenerative sustainer voltage generator
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US3803585A (en) * 1972-03-08 1974-04-09 Fujitsu Ltd Plasma display panel driving system
US3786474A (en) * 1972-03-13 1974-01-15 Owens Illinois Inc Conditioning and writing of multiple gas discharge panel
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US20030099122A1 (en) * 2001-11-29 2003-05-29 Lg Electronics Inc. Generator for sustaining pulse of plasma display panel
US7304436B2 (en) * 2001-11-29 2007-12-04 Lg Electronics Inc. Generator for sustaining pulse of plasma display panel
US20050140591A1 (en) * 2002-04-09 2005-06-30 Holtslag Antonius H.M. Plasma display apparatus
US20050259047A1 (en) * 2002-07-29 2005-11-24 Koninklijk Philips Electronics N. V. Driving a plasma display panel

Also Published As

Publication number Publication date
DE1817402C3 (de) 1974-06-27
GB1256080A (en) 1971-12-08
NL6818205A (fr) 1969-07-22
DE1817402A1 (de) 1969-08-14
DE1817402B2 (de) 1973-11-29
FR1593934A (fr) 1970-06-01

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