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US3792311A - Split-sustainer operation for gaseous discharge display panels - Google Patents

Split-sustainer operation for gaseous discharge display panels Download PDF

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Publication number
US3792311A
US3792311A US00260687A US3792311DA US3792311A US 3792311 A US3792311 A US 3792311A US 00260687 A US00260687 A US 00260687A US 3792311D A US3792311D A US 3792311DA US 3792311 A US3792311 A US 3792311A
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US
United States
Prior art keywords
diode
resistor
panel
sustainer
point
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00260687A
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English (en)
Inventor
R Trogdon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Techneglas LLC
Original Assignee
Owens Illinois Inc
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Publication date
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Assigned to OWENS-ILLINOIS TELEVISION PRODUCTS INC. reassignment OWENS-ILLINOIS TELEVISION PRODUCTS INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: OWENS-ILLINOIS, INC., A CORP. OF OHIO
Anticipated expiration legal-status Critical
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    • 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

Definitions

  • each panel electrode or conductor line is [56] References Cited addressable by a resistor-diode addressing matrix.
  • the UNITED STATES PATENTS invention provides an addressable sink circuit which 3,665,400 5 1972 Leuck 315/169 R x Smks current fmm any dwde 6 Claims, 2 Drawing Figures E ERA E 50 SUSTAIN WRIT s SUPPI.
  • the present invention is directed to split-sustainer systems for operating gaseous discharge display panels and provides improved and more economical operation for such panels.
  • Such panels are disclosed in Baker, et al., U.S. Pat. No. 3,499,167 and Bitzer, et al., U.S. Pat. No. 3,559,199.
  • Baker, et al. patent such a panel is constituted by a pair of glass plate members joined in spaced apart relation by a spacer sealant member.
  • the glass plate members carry dielectrically coated multiple conductor arrays, the row and column conductors typically being orthogonally related with the crossing points of the conductors in such matrix being addressable by the application of pulse potentials to the respective conductors in the arrays.
  • a sustainer voltage is typically applied one-half to the row conductors and one-half to the column conductors.
  • An existing method and system of implementing a diode resistor addressing circuitry employs a transistor in series with the sustainer output and a group of addressing diodes. The series transistor is normally biased ON to insure a low impedance between panel electrodes and the sustaining source. See Johnson U.S. Pat. No.
  • FIGS. 1, la and 1b illustrates a typical gaseous discharge display panel and sustainer and addressing matrix system, including typical square wave sustainer waveforms, and
  • F1G. 2 is a partial circuit diagram which illustrates the split-sustainer operation according to the invention.
  • gaseous dis charge display panel which is constructed in accordance with the teachings of Baker, et al., U.S. Pat. No. 3,499,167, is constituted by a pair of plates 11 and 12, respectively, support row conductor array 13 and column conductor array 14, each of which is provided with a dielectric coating, it being understood that other arrangements of conductors and dielectric coatings are permissible within the teachings of this invention.
  • a lead oxide overcoat as disclosed in Ernsthausen U.S. Pat. No. 3,634,719 may be applied to the units.
  • the plates are joined in spaced apart relation by a spacer sealer element 15 and the thin chamber, typically of about 4 to 6 mils but under 10 mils thickness is filled with a operating medium, preferably such medium being a gas as disclosed in said U.S. Pat. No. 3,634,719..
  • one-half the sustainer potential is applied to row conductor array 13 and the other half is applied to the column conductor array 14, typical row sustainer being shown in FIG. 1A and typical column sustainer waveform being shown in FIG. 1B.
  • the supply tems for the row conductor array 13 is designated row address and sustain circuit 18 and the corresponding supply system for column conductor array 14 is designated column address and sustain circuit 19.
  • these are shown as a combined unit because of the split nature of the sustainsource.
  • F 1G. 2 a partial circuit schematic diagram of the invention is shown, it being understood that in accordance with the legends and plans of connection and development of the circuit for a full panel array not being shown so as to simplify and avoid complication of this disclosure.
  • the sustainer system is constituted by transistors Q which is the pull up sustaining source and transistor 0,, which is the pull down sustaining source.
  • the bases of transistors Q and Q are controlled in accordance with control signals from a control and data source 20 shown in FIG. 1.
  • the pull up sustaining power level is constituted by a variable direct current voltage supply (not shown) but which is known in the art.
  • transistor 0, On being rendered conductive, raises the voltage at point 21 to the sustaining power level and this voltage is applied through coupling diode 22 to node points 23 of a typical resistor-diode address module or element.
  • Such elements are constituted by a resistor 24 and a diode 25 which, in a quiescent state, do not affect the sustained operation.
  • the panel electrodes connect to that particular nodal point 23 rise to the voltage'level V, of FIG. 1A to thereby charge the panel capacitance.
  • the panel is discharged or returned to a normal level by turning on transistor Q which is the down sustaining source. This returns the panel electrode to the level at the point labelled B in FIG. 1.
  • the down sustain transistor switch O is coupled to the gate diodes 25 by way of a coupling diode 50, so the sustainer generator is split.
  • a pull down transistor switch Q is provided and controlled to connect panel electrodes to a neutral voltage level for erase or removal of information from the panel.
  • the same functional operation occurs with respect to the column sustainer waveform illustrated in FIG. lb at a displaced time interval so that the sustainer potential seen by the gas is, in effect, the difference between the true sustainer waveforms illustrated.
  • the write and erase potentials are applied to the panel electrodes from a supply 30 via .the resistor-diode multiplex matrix and combined with the sustainer source as illustrated in FIG. 2.
  • Diode 60 serves to connect Q which is normally off during addressing operations, to the appropriate write or erase voltage level. This prevents having to charge the collector capacitance of Q through R24.
  • the logic inputs to the addressable resistor driver circuits 31 are received from the source of data to be entered to the panel, it being appreciated that there may be a plurality of such resistor driver circuits for selected groups of resistors.
  • An addressable sink circuit 40 is used to sink current from any of M non-adjacent diode-resistor combinations where M X N is the total number of conductors in the conductor array on the panel.
  • This circuit includes input transformer T transistor switch 0,, and diode 41.
  • the diode 41 is for reducing currents through diodes 22 and 25 in the event that Q and are both on. Thus, as shown the discharge and charging (displacement) currents do not pass through the addressable sink circuit 40.
  • Transistor O is used, during erase intervals, as the down sustain path instead of transistor Q
  • the invention has several advantages over prior art, including:
  • the addressable sink circuits being normally off, the leading edge of addressing signals to the various electrodes is not subject to differences in delay and reset time caused by non-uniform transistor storage characteristics;
  • the trailing edge of write and erase address signals in the system illustrated is controlled by turning all addressable sink circuits 40 on" at the desired time.
  • both leading and trailing edges of write and erase pulses are controlled by turning transistors on and the difficult to control and non-uniform process of turning transistors of does not encumber the process of providing address signals to selected electrodes.
  • a system for supplying electrical operating voltage to conductor arrays of a gas discharge display panel including (l) discharge condition manipulating voltages, and (2) periodic sustain voltages, a resistor diode matrix means for addressing selected ones of the conductors in at least one of said conductor arrays,
  • said resistor-diode addressing matrix including a plurality of resistor-diode gate elements with a node point between each resistor-diode element, means connecting each node point to a conductor in said array, a plurality of resistor voltage pulsers, means connecting the opposite end of selected N groups of said resistors to a selected one of said resistor voltage pulsers, a plurality of addressable sink circuits, each addressable sink circuit being connected to the opposite ends, respectively, of a selected group of diodes of said resistor-diode elements, and controlled on entry and removal of information to said panel to sink current from any M non-adjacent diode-resistor elements where M X N equals the total number of conductors on said panel,
  • means for supplying said periodic sustaining voltage including a direct current sustain power supply, having a pair of output terminals,
  • an up sustain transistor switch connected between one terminal of said supply and an intermediate point, means coupling said intermediate point to the node point of all said resistor-diode elements,
  • a down sustain transistor switch means means coupling said down sustain switch to the sides of said diodes opposite said node point.
  • the invention defined in claim 1 including a further transistor switch means connected to said intermediate point for connecting said intermediate point to a neutral voltage level for erase of information from said panel.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of Gas Discharge Display Tubes (AREA)
US00260687A 1972-06-07 1972-06-07 Split-sustainer operation for gaseous discharge display panels Expired - Lifetime US3792311A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26068772A 1972-06-07 1972-06-07

Publications (1)

Publication Number Publication Date
US3792311A true US3792311A (en) 1974-02-12

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US00260687A Expired - Lifetime US3792311A (en) 1972-06-07 1972-06-07 Split-sustainer operation for gaseous discharge display panels

Country Status (7)

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US (1) US3792311A (it)
JP (2) JPS4963333A (it)
CA (1) CA1003074A (it)
DE (1) DE2328434A1 (it)
FR (1) FR2188297B1 (it)
GB (1) GB1436451A (it)
IT (1) IT985311B (it)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851210A (en) * 1973-06-22 1974-11-26 Owens Illinois Inc Method of driving and addressing gas discharge panels by inversion techniques
DE2537527A1 (de) * 1974-08-23 1976-03-04 Nippon Electric Co Schaltungsanordnung zur umschaltung von spannungen
DE2621538A1 (de) * 1975-05-28 1976-12-09 Fujitsu Ltd Gasentladungsanzeigevorrichtung

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3665400A (en) * 1971-04-19 1972-05-23 Owens Illinois Inc Switching circuits and method for diode elements in conductor selection matrices

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3665400A (en) * 1971-04-19 1972-05-23 Owens Illinois Inc Switching circuits and method for diode elements in conductor selection matrices

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3851210A (en) * 1973-06-22 1974-11-26 Owens Illinois Inc Method of driving and addressing gas discharge panels by inversion techniques
DE2537527A1 (de) * 1974-08-23 1976-03-04 Nippon Electric Co Schaltungsanordnung zur umschaltung von spannungen
DE2621538A1 (de) * 1975-05-28 1976-12-09 Fujitsu Ltd Gasentladungsanzeigevorrichtung

Also Published As

Publication number Publication date
CA1003074A (en) 1977-01-04
JPS5943590Y2 (ja) 1984-12-25
GB1436451A (en) 1976-05-19
IT985311B (it) 1974-11-30
FR2188297B1 (it) 1977-05-06
DE2328434A1 (de) 1973-12-20
JPS4963333A (it) 1974-06-19
FR2188297A1 (it) 1974-01-18
JPS53136033U (it) 1978-10-27

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Owner name: OWENS-ILLINOIS TELEVISION PRODUCTS INC.,OHIO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:OWENS-ILLINOIS, INC., A CORP. OF OHIO;REEL/FRAME:004772/0648

Effective date: 19870323

Owner name: OWENS-ILLINOIS TELEVISION PRODUCTS INC., SEAGATE,

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:OWENS-ILLINOIS, INC., A CORP. OF OHIO;REEL/FRAME:004772/0648

Effective date: 19870323