US3803440A - Gas discharge panel - Google Patents

Gas discharge panel Download PDF

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Publication number
US3803440A
US3803440A US00347643A US34764373A US3803440A US 3803440 A US3803440 A US 3803440A US 00347643 A US00347643 A US 00347643A US 34764373 A US34764373 A US 34764373A US 3803440 A US3803440 A US 3803440A
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Prior art keywords
discharge
electrodes
layer
dielectric layer
display
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Expired - Lifetime
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US00347643A
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English (en)
Inventor
S Andoh
Y Shirouchi
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

Definitions

  • This invention relates to a gas discharge panel in which a priming fire is shifted with a surface discharge and a display is produced with a discharge caused between opposing electrodes (hereinafter referred to as an opposite electrode discharge).
  • a base plate 1 as of glass are arranged electrodes a1, bl, cl, dl, a2, cyclically connected to four-phase buses A to D,'a start electrode w connected to a bus W, keep-alive electrodes kl and k2 connected to buses K1 and K2, and a dielectric layer 2 of a low-melting-point material is coated on the base plate I to cover the above-described electrodes.
  • electrodes yl to y4 are disposed on the other base plate 3, which is covered with a dielectric layer 4.
  • These base plates 1 and 3 are disposed opposite to each other with a discharge space 5, in which space is sealed a discharge gas such as neon or the like.
  • a discharge is always produced between the keep-alive electrodes kl and k2 to provide a priming fire and, at the time of starting the shift of the priming fire, a voltage is impressed to the bus W to cause a discharge between the electrodes'k2 and w. Thereafter, by sequential impression of a voltage to the buses A to D, the priming fire is sequentially shifted between the electrodes al and bl, between bl and c1, between cl and d1, due to the so-called primary current effect. Namely, the discharge is shifted in the form of a surface discharge.
  • a discharge is produced between the electrodes yl to y4 and a1, bl, and the written signal is stored in the form of a wall charge at the position corresponding to the priming fire.
  • a sustain voltage is applied between all the electrodes, thereby to provide a display by discharges produced between the opposing electrodes in accordance with the written wall voltage pattern.
  • the sideof the base plate 3 will hereinafter be referred to as a display layer and the side of the base plate 1 on which the fire priming discharge is shifted will hereinafter be referred to as a shift layer.
  • this type of driving method it is sufficient to connect drivers to only the electrodes yl to y4 for writing information, as will be seen from FIGS. 1 and 2.
  • such a gas discharge panel has the following defect.
  • a priming fire is produced between the electrodes b2 and 02
  • a discharge is caused by written information between the opposing electrodes yl and cl and the priming fire is shifted between c2 and d2
  • The. gas discharge panel of this invention comprises a first base plate, which has electrodes arranged thereon and covered with a dielectric layer and is energized to cause a surface discharge between adjacent ones of the electrodes, and a second base plate, which has electrodes arranged thereon and covered with a dielectric layer and is diposed opposite to the first base plate with a discharge gas space being defined therebetween.
  • An ionizable gas is sealed in the discharge gas space.
  • the gas discharge panel is characterized in that an equivalent electrostatic capacitance produced by the one dielectric layer is made larger than that by the other dielectric layer.
  • FIG. 1 is a diagram showing an electrode arrangement of a conventional gas discharge panel
  • FIG. 2 is a cross-sectional view of the principal part of the panel of FIG. 1;
  • FIG. 3 is a diagram, this invention.
  • FIGS. 4A and 4B show equivalent circuits in the cases of an opposite electrode discharge and a surface discharge respectively;
  • FIGS. 5A to J show a series of impression voltage waveforms in the case of low-speed shifting of a priming tire
  • FIGS. 6A to H show a series of impression voltage waveforms in the case of high-speed shifting of the priming fire.
  • FIG. 3 is a diagram for explaining the principles of for explaining the principles of this invention, in which the same reference numerals and characters as those in FlG. 2 indicate the same parts.
  • an equivalent electrostatic capacitance on the side of a shift layer SL is made larger than that on the side of a display layer DL and this can be achieved by selecting the thicknesses and/or dielectric constants of the dielectric layers 2 and 4 different from each other.
  • Reference character DC identifies a discharge and, at the time of discharging, the capacitance C of the discharge space becomes shorted and wall charges H) and 0 produced by the discharge are stored in the dielectric layers 2 and 4. Accordingly, if the overall effective area of the electrodes is taken as S, the electrostatic capacitances are as follows:
  • a voltage V equals V V and is given as follows:
  • the dielectric layers 2 and 4 are usually formed of the same material, thickness of the dielectric layers dgl and dg2 are as follows:
  • the purpose can be attained by selecting the thickness d of the dielectric layer 4 of the display layer DL greater than that d of the dielectric layer 2 of the shift layer SL. The difference between them is sufficient if d O.2d,,,.
  • d O.2d d O.2d
  • a fire priming discharge is always produced between the keep-alive electrodes k1 and k2 by supplying the buses K1 and K2 with a voltage V] shown in FIGS. 5A and B.
  • a pulse V2 is impressed to the bus W only at the time of initiation of shifting the priming fire shown in FIG. 5C.
  • a pulse train including pulses V2 and V4/2 are sequentially impressed to the buses A to D as shown in FIGS. 5D to G.
  • Addressing may be achieved by a single pulse and a double pulse method. With the single pulse method, a voltage shown in FIG. 5H is selectively appliedto the electrodes yl to y4. With the double pulse method, a voltage shown in FIG. 5H is selectively impressed to the electrodes yl to y4.
  • FIGS. 6A to H show a series of impression voltage waveforms in the case of high-speed shifting of the priming fire. This is the case of employing three-phase buses. In this case, the voltages are selected as follows:
  • V7 V5 V6 Those pulses'of the voltages VYS and VYD which are marked with small circles are impressed only at the time of writing as in the foregoing.
  • the high-speed priming fire shift operation is different from the lowspeed one in that the voltage impressed to the buses A to C is composed of a single pulse and the shift operation is carried out at every impression of the pulse.
  • the low-speed 7 operation is slow in shifting the priming fire but has an advantage that the margin of the shift operation is large because the wall voltage can be utilized. Both shift operations have a large margin of the display operation by the opposite electrode discharge.
  • the double pulse method has an advantage that since the polarity of a write pulse is the same as that of a preceding one, no discharge is produced again in a cell having once discharged to avoid abuse of the cells, but a write logic circuit is complicated in construction.
  • the voltages impressed to the electrodes of the shift layer'and the display layer are not at the same timing. These voltages may be impressed atv the same timing but the impression of the voltages at the same timing has an advantage that no opposite electrode discharge is caused in the case of no write pulse being impressed.
  • the electrodes are covered with the dielectriclayers, and hence are not directly exposed to discharge, and this allows ease in the selection of the electrode material. Since the dielectric layers are selected so that the wall voltage on the shift layer produced by the surface discharge may be high and that the wall voltage by the opposite electrode discharge for display may be low, there is no possibility of unnecessary generation of a priming fire that is, a surface discharge due to the opposite electrode discharge for display. Further, even if the wall voltage produced by the surface discharge is high, the wall voltage is neutralized during the shift operation and further neutraL ized by the opposite electrode discharge for display. This provides an advantage that an erasing pulse need not be inserted in the voltage for the shift.
  • Display apparatus comprising:
  • a first base plate having a first set of electrodes disposed thereon and a first dielectric layer covering said first set of electrodes
  • a second base plate having a second set of electrodes disposed thereon and a second dielectric layer covering said second set of electrodes, said second base plate disposed opposite said first base plate for said first dielectric layer has a first dielectric constant greater than that of said second dielectric layer.
  • said first dielectric layer has a dielectric constant and thickness selected with regard to the dielectric constant and thickness of said second dielectric layer, such that the electrostatic capacitance of said first dielectric layer is greater than that of said second dielectric layer.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Transforming Electric Information Into Light Information (AREA)
US00347643A 1972-04-06 1973-04-04 Gas discharge panel Expired - Lifetime US3803440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3468272A JPS538189B2 (ko) 1972-04-06 1972-04-06

Publications (1)

Publication Number Publication Date
US3803440A true US3803440A (en) 1974-04-09

Family

ID=12421167

Family Applications (1)

Application Number Title Priority Date Filing Date
US00347643A Expired - Lifetime US3803440A (en) 1972-04-06 1973-04-04 Gas discharge panel

Country Status (5)

Country Link
US (1) US3803440A (ko)
JP (1) JPS538189B2 (ko)
FR (1) FR2179228B1 (ko)
GB (1) GB1430268A (ko)
NL (1) NL175355C (ko)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967157A (en) * 1974-02-07 1976-06-29 Nippon Electric Company, Ltd. Driving circuit for a gas discharge display panel
WO1984001658A1 (en) * 1982-10-18 1984-04-26 Univ Leland Stanford Junior Bubble display and memory device
US20060113921A1 (en) * 1998-06-18 2006-06-01 Noriaki Setoguchi Method for driving plasma display panel
US20060182876A1 (en) * 1992-01-28 2006-08-17 Hitachi, Ltd. Full color surface discharge type plasma display device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5636039Y2 (ko) * 1976-10-21 1981-08-25

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967157A (en) * 1974-02-07 1976-06-29 Nippon Electric Company, Ltd. Driving circuit for a gas discharge display panel
US4471469A (en) * 1982-06-21 1984-09-11 The Board Of Trustees Of The Leland Stanford Junior University Negative resistance bubble memory and display device
WO1984001658A1 (en) * 1982-10-18 1984-04-26 Univ Leland Stanford Junior Bubble display and memory device
US7825596B2 (en) 1992-01-28 2010-11-02 Hitachi Plasma Patent Licensing Co., Ltd. Full color surface discharge type plasma display device
US20060182876A1 (en) * 1992-01-28 2006-08-17 Hitachi, Ltd. Full color surface discharge type plasma display device
US20060202620A1 (en) * 1992-01-28 2006-09-14 Hitachi, Ltd. Full color surface discharge type plasma display device
US20070296649A1 (en) * 1998-06-18 2007-12-27 Hitachi, Ltd. Method for driving plasma display panel
US7906914B2 (en) 1998-06-18 2011-03-15 Hitachi, Ltd. Method for driving plasma display panel
US20070290952A1 (en) * 1998-06-18 2007-12-20 Hitachi, Ltd Method for driving plasma display panel
US20070290951A1 (en) * 1998-06-18 2007-12-20 Hitachi, Ltd. Method For Driving Plasma Display Panel
US20070290950A1 (en) * 1998-06-18 2007-12-20 Hitachi Ltd. Method for driving plasma display panel
US20060113921A1 (en) * 1998-06-18 2006-06-01 Noriaki Setoguchi Method for driving plasma display panel
US7825875B2 (en) 1998-06-18 2010-11-02 Hitachi Plasma Patent Licensing Co., Ltd. Method for driving plasma display panel
US20070290949A1 (en) * 1998-06-18 2007-12-20 Hitachi, Ltd. Method For Driving Plasma Display Panel
US8018168B2 (en) 1998-06-18 2011-09-13 Hitachi Plasma Patent Licensing Co., Ltd. Method for driving plasma display panel
US8018167B2 (en) 1998-06-18 2011-09-13 Hitachi Plasma Licensing Co., Ltd. Method for driving plasma display panel
US8022897B2 (en) 1998-06-18 2011-09-20 Hitachi Plasma Licensing Co., Ltd. Method for driving plasma display panel
US8344631B2 (en) 1998-06-18 2013-01-01 Hitachi Plasma Patent Licensing Co., Ltd. Method for driving plasma display panel
US8558761B2 (en) 1998-06-18 2013-10-15 Hitachi Consumer Electronics Co., Ltd. Method for driving plasma display panel
US8791933B2 (en) 1998-06-18 2014-07-29 Hitachi Maxell, Ltd. Method for driving plasma display panel

Also Published As

Publication number Publication date
DE2317164B2 (de) 1976-11-04
JPS538189B2 (ko) 1978-03-25
JPS48102974A (ko) 1973-12-24
GB1430268A (en) 1976-03-31
FR2179228B1 (ko) 1978-03-10
FR2179228A1 (ko) 1973-11-16
NL175355C (nl) 1984-10-16
DE2317164A1 (de) 1973-10-18
NL7304859A (ko) 1973-10-09
NL175355B (nl) 1984-05-16

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