US3839713A - Display system for plasma display panels - Google Patents

Display system for plasma display panels Download PDF

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Publication number
US3839713A
US3839713A US00319933A US31993372A US3839713A US 3839713 A US3839713 A US 3839713A US 00319933 A US00319933 A US 00319933A US 31993372 A US31993372 A US 31993372A US 3839713 A US3839713 A US 3839713A
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electrodes
discharge
voltage
applying
dielectric layer
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Expired - Lifetime
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US00319933A
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English (en)
Inventor
T Urade
T Hirose
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Fujitsu Ltd
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Fujitsu Ltd
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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
    • 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
    • G09G3/29—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 self-shift panels with sequential transfer of the discharges from an input position to a further display position

Definitions

  • This invention relates to a display system for plasma display panels for providing a display by utilizing the memory function of a wall voltage and the primary current effect due to electrons, ions and metastable atoms produced by discharge.
  • a charge produced by discharge is stored in a dielectric layer coated on electrodes to generate a wall voltage and the wallvoltage provides a memory function. Further, ions, electrons and metastable atoms produced by discharge are scattered and self shift can be achieved by the primary current effect, which results in lower firing discharge voltages of adjacent cells.
  • electrodes are periodically connected to usually three buses, electrodes are provided in the shifting direction which cross the electrodes in opposing relation thereto and a sustain voltage is impressed to the buses in a sequential order. Accordingly, written information is displayed while being shifted as is the case with an electric sign and it is displayed in a stationary condition by continuously impressing the sustain voltage to any one of the buses.
  • two electrodes are interposed between discharge spots in the shifting direction and the displayed image is indistinct. This can be avoided by narrowing the distance between the electrodes and decreasing their width, but this presents a problem in their manufacture.
  • An object of this invention is'to provide a display system which employs a construction similar to those of usual plasma display panels and utilizes the shelf shift action but enables reduction of a picture element pitch.
  • the display system for plasma display panels includes a plurality of X-direction electrodes periodically connected with a plurality of buses and a plurality of Y-direction electrodes impressed with a display information input are disposed opposite to each other with a discharge gas space difined therebetween.
  • a dielectric layer is coated on at least the Y-direction electrodes.
  • a lateral discharge between adjacent ones of the X-direction electrodes is sequentially shifted, and a vertical discharge is caused between the X- and Y-direction electrodes in accordance with the timing of the lateral discharge shifting and the timing of the display information input impressed to the Y-direction electrodes.
  • the vertical discharge is stored as a wall voltage in the dielectric layer, and a sustain voltage is impressed between all the X- and Y-direction electrodes after the writing operation to provide and maintain a display.
  • FIG. 1 is a cross-sectional view showing the principal part of an embodiment of this invention
  • FIG. 2 shows electrode arrangements employed in the embodiment shown in FIG. 1;
  • FIG. 3 is a waveform diagram, for explaining the operation of the embodiment depicted in FIG. 1;
  • FIG. 4 is a block diagram showing a drive circuit employed in the embodiment of FIG. 1;
  • FIGS. 5A to 5G show a series of waveform diagrams
  • FIG. I shows in section the principal part of one ex ample of a plasma display panel of this invention and FIG. 2 shows electrode arrangements employed therein.
  • reference numerals 1a and 1b indicate insulating base plates as of glass
  • 2a and 2b indicatethe dielectric layers as of low-melting-point glass
  • 3x and 3y indicate the X- and Y- direction electrodes
  • 4 indicates a discharge gas space having sealed therein a mixed gas composed of for example, neon and argon.
  • Reference characters A, B and C designate buses; electrode a1, b1, c1, a2, b2, of the X-direction 3x are connected to the buses A, B and C, respectively, in repeating groups of three; yl to y7 indicate electrodes of the Y-direction electrodes 3y, s indicates a starting electrode connected with a bus S; D1 to D7 indicate the drivers and CONT indicates-a control circuit including a decoder. With a starting signal, voltages VS and VA shown in FIG. 3 are impressed to the buses S and A as shown in FIG. 3 to cause a discharge between the electrodes s and al. This discharge is produced in a lateral direction, and hence will hereinafter be referred to as a lateral discharge.
  • FIG. 3 shows that one continuous pulse during each pulse period is impressed for each of VS, VA, VB and VC but it is instead possible to impress a plurality of pulses within one pulse period.
  • a discharge is caused between the electrodes 3. 3 and a2.
  • This discharge is produced in a direction vertical to the lateral direction, and hence will hereinafter be referred to as a vertical discharge.
  • the vertical discharge is produced mainly by the aforementioned selecting voltage VY and the primary current effect due to the lateral discharge between the electrodes a2 and b2.
  • a wall charge stored in the dielectric layer 2a also serves to cause the vertical discharge.
  • the display content uses as one picture element each of opposing intersections of the electrodes a1, bl, cl, and those yl to y7. This implies that the one picture element pitch is reduced, as compared with that of conventional plasma display panels in which the display content is formed with a picture element of every third electrode.
  • a display panel indicated by has X-direction electrodes a1, bl, c1, an, bn, and on including the starting electrode S, and Y-direction electrodes yl, y2, and yn extending in a direction perpendicular to the X direction electrodes, as described previously with regard to FIG. 2.
  • the starting electrode S is connected through a driver 11s to a one-shot multivibrator 17 which is controlled with a reset output from a flip'flop circuit 16.
  • X-direction electrodes are connected to three drivers 11a, 11b and 11c through buses A, B and C. respectively. These drivers 11a, 11b
  • the second input terminals of the OR gate circuits 23a, 23b, and 23n are supplied with the set output from the flip-flop circuit 16, and the second input terminals of the AND gate circuits 22a, 22b, and 22n are supplied in reverse polarity with an output from the oscillator 15 through an inverter 18.
  • the oscillator 15 produces a pulse output such as shown in FIG. 5A and that a first stage I of the ring counter 14 is in its on stage.
  • theoneshot multivibrator 17 is actuated by a reset output from the flip-flop circuit 16 to supply the starting electrode S with a voltage such as depicted in FIG. 513.
  • the AND gate circuit 12a since the AND gate circuit 12a is held open, the buses A and B are supplied with pulses of a voltage Vsl/2 which are opposite in polarity to each other as shown in FIG.
  • the interface circuit 20 supplies display information of one column to the shift register 25 through the AND gate circuit 19.
  • the one-shot multivibrator 26 is triggered to provide an output such as depicted in FIG. 5F to open the AND gate circuits 24a, 24b, and 2411 to supply the Y-direction electrodes with the display information for one column of the display as is now stored in the shift register 25. Namely, on the first line of information, such as line 1 corresponding to X address line a the AND gate circuits 22a, 22b,
  • a selected one of the Y-direction electrodes, for example, 2 is supplied with a voltage Vw such as shown in FIG. 5G which is of the same polarity as the voltage of the subsequent one of 5 the electrodes a1 and [11 causing a lateral discharge therebetween, that is, the electrode bl has a voltage applied thereto as shown in FIG. 5D, which is opposite in polarity to the voltage applied to the preceding electrode a1 as shown in FIG.
  • a vertical discharge P then is produced between the X- and Y- direction electrodes a1 and 2 by the aid of the primary current effect due to the lateral discharge between the electrodes a1 and b1.
  • This vertical discharge P is stored in the form of a wall charge after the voltage to the Y- direction electrode is removed, as is the case with the 1 known plasma display panels.
  • the other output from the one-shot multivibrator 26 is delayed by the delay circuit 27 for a period of time necessary for the above-described first column write-in operation to be carried out and then is applied to the three-stage ring counter 14 to advance it one step.
  • the second stage II of the ring counter 14 is put in its on state and the pulse supply to the bus A is cut off.
  • pulses of opposite polarities are applied to the buses B and C in such forms as depicted in FIGS. 5D and SE to shift the lateral discharge from between electrodes al and bl to occur now between the electrodes bl and cl. Under these conditions, if display information of a second column is introduced to each Y-direction electorde, it can be written at each intersecting point of the electrode bl with each Y- direction electrode.
  • the flip-flop circuit 16 Upon delivery of a display command from the interface circuit after the entirety of the' columns of information has been sequentially written in, in the manner described above, the flip-flop circuit 16 is reversed and its set output is applied to the OR gate circuits 13a, 13b and 130 for the X-direction electrodes and the OR gate circuits 23a, 23b, and 23:1 for the Y-direction electrodes.
  • a sustain voltage is applied between all the X- and Y-direction electrodes to cause a vertical discharge and thereby produce a display at each area where the vertical discharge produced in the writing operation has been stored in the pattern of the wall charge.
  • the negative operating portions N of the drivers 11a, 11b and He on the side of the X-direction electrodes are made inoperative by the switching elements Sa, Sb and Sc.
  • the waveforms shown in the right-hand portion in FIG. 5 illustrate such display mode. In this case, however, shifting of the lateral discharge is not limited specifically to the three-phase system employing three shift drivers but is possible with any desired multiphase system.
  • the foregoing embodiment employs a plasma display panel in which the dielectric layer 2a is formed on the electrodes a1, b1, cl, but since storage and display of the written information utilizes the wall charge stored in the dielectric layer 212 formed on the electrodes yl to y7, it is also possible to omit the dielectric layer 2a and produce the lateral discharge directly.
  • the dielectric layer 2a is formed on the electrodes a1, b1, cl
  • partition means can be provided along theY-direction electrodes on the 6 dielectric layer overlying the X-direction electrodes.
  • the partition means can be formed with mechanical partition walls, resistive stripes or layers of a material of small coefficient of secondary electron emission.
  • a vertical discharge is produced by selecting the Y-direction electrodes in accordance with the information written in, thereby to store a wall charge in the dielectric layer disposed on the Y-direction electrode.
  • a sustain voltage than is impressed between the X- and Y-direction electrodes after completion of the writing of one or all of the columns to provide a display.
  • the writing operation is achieved by self shift as has been described in the foregoing, so that an address circuit is simplified and each intersecting point of the electrodes is used as one picture element, enabling a high resolution display.
  • the number of buses for lateral discharge shifting can be increased and the timing of the lateral discharge shifting can be detected from the content of a counter or the like. If the timing for the lateral discharge shifting is made coincident with the write-in information by means of a control circuit, input information can be sequentially written from the beginning.
  • a method of operating a plasma display panel" comprising a plurality of X-direction electrodes and a plurality of Y-direction electrodes spaced from each other for receiving therebetween a discharge gas, and a dielectric layer disposed on the Y-direction electrodes, said method comprising the steps of:
  • a display system comprising: a plasma display panel comprising a first plurality of electrodes disposed in a first direction and a secdischarge from each such pair of electrodes to the next;
  • d. means for applying a sustain voltage between said first and second electrodes to provide a display of the pattern of the wall voltage stored in said dielectric layer associated with said second plurality of electrodes.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Transforming Electric Information Into Light Information (AREA)
US00319933A 1971-12-31 1972-12-29 Display system for plasma display panels Expired - Lifetime US3839713A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP185172A JPS5326458B2 (de) 1971-12-31 1971-12-31

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US (1) US3839713A (de)
JP (1) JPS5326458B2 (de)
DE (1) DE2264174C3 (de)
GB (1) GB1418044A (de)
NL (1) NL174302C (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USB520613I5 (de) * 1974-11-04 1976-03-16
US3953672A (en) * 1974-11-04 1976-04-27 Bell Telephone Laboratories, Incorporated Gray scale for planar gas discharge display devices
US3958233A (en) * 1974-07-31 1976-05-18 Owens-Illinois, Inc. Multiphase data shift device
US3962700A (en) * 1974-12-30 1976-06-08 Ibm Corporation Alphanumeric gas display panel with modular control
US3964050A (en) * 1975-05-21 1976-06-15 Control Data Corporation Plasma display panel
US3976993A (en) * 1973-07-16 1976-08-24 Fujitsu Ltd. Gas discharge panel self shift drive system and method of driving
US4009415A (en) * 1975-11-24 1977-02-22 Bell Telephone Laboratories, Incorporated Plasma panel with dynamic keep-alive operation utilizing a lagging sustain signal
US4021851A (en) * 1974-07-08 1977-05-03 Le Coquil Emile F Writing head for facsimile image reproduction
US4104626A (en) * 1977-02-09 1978-08-01 Bell Telephone Laboratories, Incorporated Arrangement utilizing the mechanism of charge spreading to provide an ac plasma panel with shifting capability
US4163409A (en) * 1976-09-10 1979-08-07 Juan M. del Castillo Optical metronomes
DE3117912A1 (de) * 1980-05-09 1982-04-01 Hitachi, Ltd., Tokyo Ansteuerverfahren fuer gasentladungs-anzeigetafel
WO1982002314A1 (en) * 1980-12-22 1982-07-08 Ncr Co Plasma charge transfer device
US4386351A (en) * 1980-12-20 1983-05-31 Timex Corporation Method and system for two-dimensional traveling display and driver circuits therefor
WO2009091366A1 (en) * 2008-01-17 2009-07-23 Thomson Licensing Display system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5772487U (de) * 1980-10-20 1982-05-04
JPS58131668U (ja) * 1982-02-26 1983-09-05 株式会社日立国際電気 プラグインタイプ電子素子用引抜き治具
JP4401905B2 (ja) * 2004-09-03 2010-01-20 株式会社日立製作所 プラズマディスプレイパネル及びそれを用いた画像表示システム。

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2847615A (en) * 1956-11-28 1958-08-12 Digital Tech Inc Memory device
US3600626A (en) * 1969-11-26 1971-08-17 Burroughs Corp Multicell display device having communication paths between adjacent cells
US3611296A (en) * 1969-12-29 1971-10-05 Owens Illinois Inc Driving circuitry for gas discharge panel
US3654507A (en) * 1970-01-29 1972-04-04 Burroughs Corp Display panel with keep alive cells
US3701924A (en) * 1970-08-17 1972-10-31 Burroughs Corp System for operating a display panel
US3750159A (en) * 1971-12-23 1973-07-31 Owens Illinois Inc Bulk erase system for gas discharge display panels

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2847615A (en) * 1956-11-28 1958-08-12 Digital Tech Inc Memory device
US3600626A (en) * 1969-11-26 1971-08-17 Burroughs Corp Multicell display device having communication paths between adjacent cells
US3611296A (en) * 1969-12-29 1971-10-05 Owens Illinois Inc Driving circuitry for gas discharge panel
US3654507A (en) * 1970-01-29 1972-04-04 Burroughs Corp Display panel with keep alive cells
US3701924A (en) * 1970-08-17 1972-10-31 Burroughs Corp System for operating a display panel
US3750159A (en) * 1971-12-23 1973-07-31 Owens Illinois Inc Bulk erase system for gas discharge display panels

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3976993A (en) * 1973-07-16 1976-08-24 Fujitsu Ltd. Gas discharge panel self shift drive system and method of driving
US4021851A (en) * 1974-07-08 1977-05-03 Le Coquil Emile F Writing head for facsimile image reproduction
US3958233A (en) * 1974-07-31 1976-05-18 Owens-Illinois, Inc. Multiphase data shift device
US3953672A (en) * 1974-11-04 1976-04-27 Bell Telephone Laboratories, Incorporated Gray scale for planar gas discharge display devices
USB520613I5 (de) * 1974-11-04 1976-03-16
US3991341A (en) * 1974-11-04 1976-11-09 Bell Telephone Laboratories, Incorporated Plasma discharge shift registers
US3962700A (en) * 1974-12-30 1976-06-08 Ibm Corporation Alphanumeric gas display panel with modular control
US3964050A (en) * 1975-05-21 1976-06-15 Control Data Corporation Plasma display panel
US4009415A (en) * 1975-11-24 1977-02-22 Bell Telephone Laboratories, Incorporated Plasma panel with dynamic keep-alive operation utilizing a lagging sustain signal
US4163409A (en) * 1976-09-10 1979-08-07 Juan M. del Castillo Optical metronomes
US4104626A (en) * 1977-02-09 1978-08-01 Bell Telephone Laboratories, Incorporated Arrangement utilizing the mechanism of charge spreading to provide an ac plasma panel with shifting capability
DE3117912A1 (de) * 1980-05-09 1982-04-01 Hitachi, Ltd., Tokyo Ansteuerverfahren fuer gasentladungs-anzeigetafel
US4476466A (en) * 1980-05-09 1984-10-09 Hitachi, Ltd. Driving method of gas-discharge display panel
US4386351A (en) * 1980-12-20 1983-05-31 Timex Corporation Method and system for two-dimensional traveling display and driver circuits therefor
WO1982002314A1 (en) * 1980-12-22 1982-07-08 Ncr Co Plasma charge transfer device
WO2009091366A1 (en) * 2008-01-17 2009-07-23 Thomson Licensing Display system

Also Published As

Publication number Publication date
DE2264174C3 (de) 1978-04-13
DE2264174A1 (de) 1973-07-12
GB1418044A (en) 1975-12-17
NL174302C (nl) 1984-05-16
NL7217747A (de) 1973-07-03
JPS4874937A (de) 1973-10-09
JPS5326458B2 (de) 1978-08-02
DE2264174B2 (de) 1977-08-18

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