US3673460A - Low voltage pulse system for addressing gas discharge display/memory panels - Google Patents

Low voltage pulse system for addressing gas discharge display/memory panels Download PDF

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Publication number
US3673460A
US3673460A US72417A US3673460DA US3673460A US 3673460 A US3673460 A US 3673460A US 72417 A US72417 A US 72417A US 3673460D A US3673460D A US 3673460DA US 3673460 A US3673460 A US 3673460A
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United States
Prior art keywords
row
column
pulse
pulse voltage
source
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Expired - Lifetime
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US72417A
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English (en)
Inventor
William E Johnson
Larry J Schmersal
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Techneglas LLC
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Owens Illinois Inc
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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

  • Panels as disclosed in the above-referenced patent and article have an electrical memory and such panels are capable of producing a visual display or representation of data and are characterized by an ionizable gaseous medium, usually a mixture of two gases at a selected pressure in a thin gas chamber or space between a pair of opposed dielectric charge storage members which are backed by row-column conductor matrix, each cross point of the matrix locating a discrete discharge volume in the gas which are locatable by the conductor matrix as described.
  • the dielectric layers prevent the passage of any conductive current from the matrix conductor members to the gaseous medium and also serve as collecting surfaces for charges in the ionized gaseous medium during alternate half cycles of the periodic operating potentials supplied, such periodic operating potentials being designated as the sustainer potential.
  • the discharge condition of the gas between selected row-column conductor pairs is controlled by application of discharge condition manipulating pulse potentials, preferably in the manner disclosed in our application Ser. No. 699,170 now US. Pat. No. 3,618,017.
  • discharge condition manipulating pulse potentials preferably in the manner disclosed in our application Ser. No. 699,170 now US. Pat. No. 3,618,017.
  • pulse voltages have been relatively high and hence, generally require the utilization of high voltage circuits which, in integrated circuit fabrication, become, in a relative sense, expensive.
  • the present invention is directed to the reduction of the transistor voltage requirement to permit utilization of a lower cost manufacturing technique when these circuits are made from integrated circuits.
  • diode isolation techniques 'used to fabricate low voltage integrated circuits may be utilized in forming circuits to supply the discharge condition pulse manipulating voltages to a panel.
  • an auxiliary low voltage pulse generator or source is combined with a sustainer source so that the pulser in series with each line to the panel may be a low voltage pulser circuit.
  • FIG. 1 is block diagram showing in simplified partial plan view a display panel embodying the invention.
  • FIG. 2 is a simplified wave form diagram to illustrate the principles of the invention.
  • FIG. 1 While a detailed description of a gas discharge display panel to which the invention is particularly applicable is found in the aforementioned Baker et al. U.S. Pat. No. 3,499,167, which is incorporated herein by reference, the panel is shown in simplified diagrammatic form in FIG. 1 as being composed of a row conductor plate 11 having row conductors R1, R2, RN on one surface thereof and a dielectric layer or coating 12 having a portion extending beyond the spacer sealant 13 which extends between the opposing column plate 14, carrying column conductors C1, C2, CN which, in a similar fashion have a dielectric coating or layer 16 thereon.
  • Each of the row conductors R1, R2, RN has in series therewith a pulse voltage source 15-1, 15-2, 15-N, each of which receives a trigger pulse or trigger logic pulse LPR-l, LPR-2 LPR-N, respectively, from row decode logic circuit 18 which, in turn, receives information or data signals from data processing unit 19 which may be connected to a computer for receiving data on input terminal 20.
  • Each row line pulser 15 is selectively operated by the logic pulses from row decode logic circuit 18 to supply discharge condition manipulating voltage pulses to selected row conductors. As illustrated, in FIG.
  • row decode logic 18 provides I an output or trigger pulse to auxiliary row pulse generator 24 every time there is an output pulse on any one of the row decode logic output terminals LPRl LPR2, LPRN.
  • the sustaining voltage for the row conductors is received from a row sustainer generator 25 which, in the embodiment illustrated is a sinusoidal voltage (FIG. 2, line 1) although square waves and triangular wave sustainer voltage wave forms may be used.
  • a row sustainer generator 25 which, in the embodiment illustrated is a sinusoidal voltage (FIG. 2, line 1) although square waves and triangular wave sustainer voltage wave forms may be used.
  • the common terminal between row sustainer voltage generator 25 and column sustainer voltage generator 26 is connected to a common ground terminal so that the row auxiliary pulse generator 24 as well as the row voltage pulsers are connected so as to electrically float on the output voltage wave form from sustaining generator 25.
  • the sustaining generator disclosed in Murley application Ser. No 755,930 is well suited for this purpose.
  • column conductors C1, C2, CN are each connected in series with a low voltage column pulser circuit 30-1, 30-2, 30-N each of which is adapted to receive and be triggered by a logic pulse from column decoder logic circuit 31.
  • column decoder logic circuit 31 supplies a series of output pulses on lines LPCI, LPC2, LPCN in accordance with the information supplied thereto from data processing unit 19.
  • any time a pulse appears on any one of terminals LPCl, LPC2, LPCN a pulse appears on pulse output tenninal 34 which pulse is applied to column auxiliary pulse generator 33.
  • This generator is identical to the pulse generator 24 and operates in a similar fashion.
  • This pulse generator 33 is connected in series with column sustainer generator or source 35 which operates at phase relationship with respect to sustaining generator 25.
  • column sustainer generator or source 35 which operates at phase relationship with respect to sustaining generator 25.
  • its output voltage, and phase relationship with respect to the phase of the row sustainer voltage is shown on line 4 of FIG. 2.
  • the pulse voltage from column auxiliary pulse generator 33 which is for purposes of simplicity shown as separated from the sustainer voltage wave form shown on line 4 of FIG. 2, but, in actuality the pulse shown on line 5 rides on" the column sustainer voltage as illustrated at 38.
  • the column low voltage pulse output from generators 30-1, 30-2, 30-N, for one of these generators or sources, is shown on line 6 of FIG. 2.
  • the voltage pulses shown on lines 5 and 6 are negative relative to the voltage pulses shown on lines 2 and 3 which is in conformity with the column sustainer voltage being 180 out of phase with respect to the row sustainer. It will be appreciated further that on the next half cycle that the polarities would, relatively, be reversed.
  • the column pulses are connected relative to the sustainer so as to electrically float on same.
  • the discharge unit located by the row-column conductor matrix are essentially voltage sensitive devices, the tum-on and tumxoff processes are both level dependent.
  • a portion of the control voltage pulses can be made a part of the sustainer-voltage without detracting from the operation of the panel.
  • the magnitude of this auxiliary pulse voltage (FIG. 2, lines 2 and 5) is such that it does not affect the discharge units which are on and discharge units which are ofi.
  • the sustainer auxiliary pulses are combined with a line voltage pulse from pulsers l5 and 30 in any selected pattern, then the voltage across a discharge unit will be sufficient to control the discharge conditions of same, either turning it on or turning it off.
  • the row and column conductor voltage pulse requirements have been reduced greatly so as to thereby permit the use of low voltage integrated circuits which may be fabricated by the use of diode isolation techniques.
  • the low voltage integrated circuit fabrication techniques of diode isolation can be utilized wherein the voltages are in or below the 60 volts range as compared to the higher voltage circuits which require dielectric isolation.
  • a further row pulse voltage source means connecting said further pulse voltage source in series relation with said sustainer voltage for said row conductors and with each said row pulse source, said further row pulse voltage source being actuated once during a half cycle of said sustainer voltage and at a selected time period thereof, and v for said column conductors,
  • a further column pulse voltage source means connecting said further pulse voltage source in series relation with the sustainer source for said column conductors and with each of said column pulse source, said further column pulse voltage source being actuated simultaneously with said further row pulse voltage source for said row conductors.

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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)
  • Transforming Electric Information Into Light Information (AREA)
US72417A 1970-09-15 1970-09-15 Low voltage pulse system for addressing gas discharge display/memory panels Expired - Lifetime US3673460A (en)

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US7241770A 1970-09-15 1970-09-15

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US3673460A true US3673460A (en) 1972-06-27

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US (1) US3673460A (https=)
JP (1) JPS537765B1 (https=)
CA (1) CA953000A (https=)
DE (1) DE2141343C3 (https=)
FR (1) FR2106241A5 (https=)
GB (1) GB1370469A (https=)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3761768A (en) * 1969-07-18 1973-09-25 Owens Illinois Inc High voltage interface address circuit and method for gas discharge panel
US3793628A (en) * 1972-09-01 1974-02-19 Ncr Electroluminescent display device
US3922583A (en) * 1974-06-27 1975-11-25 Ibm Method and means for increasing the operating range of gas panel displays
US20080191891A1 (en) * 2005-08-04 2008-08-14 Siemens Power Generation, Inc. Power generator and power generator auxiliary monitoring

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096516A (en) * 1960-04-12 1963-07-02 David W Pendleton Transparent electronic display systems
US3513327A (en) * 1968-01-19 1970-05-19 Owens Illinois Inc Low impedance pulse generator

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3096516A (en) * 1960-04-12 1963-07-02 David W Pendleton Transparent electronic display systems
US3513327A (en) * 1968-01-19 1970-05-19 Owens Illinois Inc Low impedance pulse generator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3761768A (en) * 1969-07-18 1973-09-25 Owens Illinois Inc High voltage interface address circuit and method for gas discharge panel
US3793628A (en) * 1972-09-01 1974-02-19 Ncr Electroluminescent display device
US3922583A (en) * 1974-06-27 1975-11-25 Ibm Method and means for increasing the operating range of gas panel displays
US20080191891A1 (en) * 2005-08-04 2008-08-14 Siemens Power Generation, Inc. Power generator and power generator auxiliary monitoring

Also Published As

Publication number Publication date
DE2141343C3 (de) 1974-05-30
DE2141343A1 (de) 1972-03-16
JPS537765B1 (https=) 1978-03-22
CA953000A (en) 1974-08-13
FR2106241A5 (https=) 1972-04-28
DE2141343B2 (de) 1973-10-31
GB1370469A (en) 1974-10-16

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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