US3886393A - Gas mixture for gas discharge device - Google Patents

Gas mixture for gas discharge device Download PDF

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Publication number
US3886393A
US3886393A US279875A US27987572A US3886393A US 3886393 A US3886393 A US 3886393A US 279875 A US279875 A US 279875A US 27987572 A US27987572 A US 27987572A US 3886393 A US3886393 A US 3886393A
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gas
discharge
xenon
dielectric
gas discharge
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US279875A
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David C Hinson
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Techneglas LLC
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Owens Illinois Inc
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Priority to US279875A priority Critical patent/US3886393A/en
Priority to JP7560273A priority patent/JPS5422867B2/ja
Priority to IT51382/73A priority patent/IT989826B/it
Priority to CA177,562A priority patent/CA998087A/en
Priority to FR7328836A priority patent/FR2195835B1/fr
Priority to DE2339923A priority patent/DE2339923C3/de
Priority to GB3792873A priority patent/GB1443558A/en
Priority to US412576A priority patent/US3904915A/en
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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
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/20—Selection of substances for gas fillings; Specified operating pressures or temperatures

Definitions

  • the mixture is especially beneficial for use in a color phosphor gas discharge display/- memory device because the mixture substantially lowers peak gas discharge currents while providing phosphor stimulation.
  • the xenon-based composition consists essentially of about to percent atoms of xenon and about 5 to 0 percent atoms of another com ponent, particularly one or more selected from neon, krypton, nitrogen, helium, and mercury.
  • Multiple gas discharge display and/or memory panels of one particular type with which the present invention is concerned are characterized by an ionizable gaseous medium, usually a mixture of at least two gases at an appropriate gas pressure, in a thin gas chamber or space between a pair of opposed dielectric charge storage members which are backed by conductor (electrode) members, the conductor members backing each dielectric member typically being appropriately oriented so as to define a plurality of discrete gas discharge units or cells.
  • an ionizable gaseous medium usually a mixture of at least two gases at an appropriate gas pressure
  • the discharge cells are addi tionally defined by surrounding or confining physical structure such as apertures in perforated glass plates and the like so as to be physically isolated relative to other cells.
  • charges electrospray, ions
  • the confining physical structure charges (electrons, ions) produced upon ionization of the elemental gas volume of a se lected discharge cell, when proper alternating operating potentials are applied to selected conductors thereof, are collected upon the surfaces of the dielectric at specifically defined locations and constitute an electrical field opposing the electrical field which created them so as to terminate the discharge for the remainder of the half cycle and aid in the initiation of a discharge on a succeeding opposite half cycle of applied voltage, such charges as are stored constituting an electrical memory.
  • the dielectric layers prevent the passage of substantial conductive current from the conductor members to the gaseous medium and also serve as collecting surfaces for ionized gaseous medium charges (elec trons, ions) during the alternate half cycles of the A.C. operating potentials, such charges collecting first on one elemental or discrete dielectric surface area on alternate half cycles to constitute an electrical memory.
  • a continuous volume of ionizable gas is confined between a pair of dielectric surfaces backed by conductor arrays typically forming matrix elements.
  • the cross conductor arrays may be orthogonally related (but any other configuration of conductor arrays may be used) to define a plurality of opposed pairs of charge storage areas on the surfaces of the dielectric bounding or confining the gas.
  • the number of elemental or discrete areas will be twice the number of such elemental discharge cells.
  • the panel may comprise a so-called monolithic structure in which the conductor arrays are created on a single substrate and wherein two or more arrays are separated from each other and from the gaseous medium by at least one insulating member.
  • the gas discharge takes place not between two opposing electrodes, but between two contiguous or adjacent electrodes on the same substrate: the gas being confined between the substrate and an outer retaining wall.
  • a gas discharge device wherein some of the conductive or electrode members are in direct contact with the gaseous medium and the remaining electrode members are appropriately insulated from such gas, i.e., at least one insulated elec trode.
  • the conductor arrays may be shaped otherwise. Accordingly, while the preferred conductor arrangement is of the crossed grid type as discussed herein, it is likewise apparent that where a maximal variety of two dimensional display patterns is not necessary, as where specific standardized visual shapes (e.g., numerals, letters, words, etc.) are to be formed and image resolution is not critical, the conductors may be shaped accordingly, i.e., a segmented display.
  • specific standardized visual shapes e.g., numerals, letters, words, etc.
  • the gas is one which produces visible light or invisible radiation which stimulates a phosphor (if visual display is an objective) and a copious supply of charges (ions and electrons) during discharge.
  • gases and gas mixtures have been utilized as the gaseous medium in a gas discharge device.
  • gases include C0; C0 halogens; nitrogen; NH oxygen; water vapor; hydrogen, hydrocarbons, P 0 boron fluoride, acid fumes; TiCl Group VIII gases; air; H 0 vapors of sodium, mercury, thallium, cadmium, rubidium, and cesium; carbon disulfide, laughing gas; I-I- S; deoxygenatecl air; phosphorus vapors; C H CH naphthalene vapor; anthracene; freon, ethyl alcohol; methylene bromide; heavy hydrogen, electron attaching gases; sulfur hexalluoride; tritium; radioactive gases; and the rare or inert gases.
  • the gaseous medium comprises at least one rare gas, more preferably at least two, selected from helium, neon, argon, krypton, or xenon.
  • the gas pressure and the electric field are sufficient to laterally confine charges generated on discharge within elemental or discrete dielectric areas within the perimeter of such areas, especially in a panel containing n0nisolated discharge cells.
  • the space between the dielectric surfaces occupied by the gas is such as to permit photons generated on discharge in a selected discrete or elemental volume of gas to pass freely through the gas space and strike surface areas of dielectric remote from the selected discrete volumes, such remote, photon struck dielectric surface areas thereby emitting electrons so as to condition at least one elemental volume other than the elemental volume in which the photons originated.
  • the allowable distance or spacing between the dielectric surfaces depends, inter alia, on the frequency of the alternating current supply, the distance typically being greater for lower frequencies.
  • V is the half amplitude of the smallest sustaining voltage signal which results in a discharge every half cycle, but at which the cell is not bi-stable and V is the half amplitude of the minimum applied voltage sufficient to sustain discharges once initiated.
  • the basic electrical phenomenon utilized in this invention is the generation of charges (ions and electrons) alternately storable at pairs of opposed or facing discrete points or areas on a pair of dielectric surfaces backed by conductors connected to a source of operating potential.
  • Such stored charges result in an electrical field opposing the field produced by the applied potential that created them and hence operate to terminate ionization in the elemental gas volume between opposed or facing discrete points or areas of dielectric surface.
  • sustain a discharge means producing a sequence ofmomentary discharges, at least one discharge for each half cycle of applied alternating sustaining voltage, once the elemental gas volume has been fired, to maintain alternate storing of charges at pairs of opposed discrete areas on the dielectric surfaces.
  • a cell is in the on state when a quantity ofcharge is stored in the cell such that on each half cycle of the sustaining voltage, a gaseous discharge is produced.
  • ln addition to the sustaining voltage, other voltages may be utilized to operate the panel, such as firing, addressing, and writing voltages.
  • a firing voltage is any voltage, regardless of source, required to discharge a cell. Such voltage may be completely external in origin or may be comprised of internal cell wall voltage in combination with externally originated voltages.
  • An addressing voltage is a voltage produced on the panel X-Y electrode coordinates such that at the selected cell or cells, the total voltage applied across the cell is eequal to or greater than the firing voltage whereby the cell is discharged.
  • a writing voltage is an addressing voltage of sufficient magnitude to make it probable that on subsequent sustaining voltage half cycles, the cell will be in the on state.
  • One such means of panel conditioning comprises a socalled electronic process whereby an electronic conditioning signal or pulse is periodically applied to all of the panel discharge cells.
  • an electronic conditioning signal or pulse is periodically applied to all of the panel discharge cells.
  • electronic conditioning is self-conditioning and is only effective after a discharge cell has been previously conditioned; that is, electronic conditioning involves periodically discharging a cell and is therefore a way of maintaining the presence of free electrons. Accordingly, one cannot wait too long between the periodically applied conditioning pulses since there must be at least one free electron present in order to discharge and condition a cell.
  • Another conditioning method comprises the use of external radiation, such as flooding part or all of the gaseous medium of the panel with ultraviolet radiation.
  • This external conditioning method has the obvious disadvantage that it is not always convenient or possible to provide external radiation to a panel, especially if the panel is in a remote position.
  • an external UV source requires auxiliary equipment. Accordingly, the use of internal conditioning is generally preferred.
  • One internal conditioning means comprises using internal radiation, such as by the inclusion of a radioactive material.
  • Another means of internal conditioning comprises using one or more so-called pilot discharge cells in the on-state for the generation of photons.
  • This is particularly effective in a so-called open cell construction (as described in the Baker, et al. patent) wherein the space between the di electric surfaces occupied by the gas is such as to permit photons generated on discharge in a selected dis crete or elemental volume of gas (discharge cell) to pass freely through the panel gas space so as to condition other and more remote elemental volumes of other discharge units.
  • the pilot cells one may use other sources of photons internal to the panel.
  • the internal photon conditioning may be unreliable when a given discharge unit to be addressed is remote in distance relative to the conditioning source, e.g., the pilot cell. Accordingly, a multiplicity of pilot cells may be required for the conditioning of a panel having a large geometric area.
  • the panel matrix border (perimeter) is comprised of a plurality of such pilot cells.
  • phosphors may be appropriately positioned within the device so as to be excited by radiation from the gas discharge of the device.
  • phosphors in a memory charge storage device of the Baker, et al. type, phosphors can be positioned on or be embedded in one or more charge storage dielectric surfaces, such as disclosed in copending US. patent application Ser. No. 101,433, filed Dec. 24, 1970 by Robert N. Clark. and assigned to the same assignee as the instant application.
  • the presence of the phosphors within the device can be utilized to provide color display, the color being the result of radiation emitted by an excited phosphor alone or in combination with radiation emitted by the gas discharge, such as disclosed in copending US. patent application Ser. No. 199,802, filed Nov. 17, 1971 by Felix H. Brown and Maclin H. Hall and assigned to the same assignee as the instant application.
  • phosphor panels of the gas discharge display/memory type have been operated with various gas mixtures, especially rare gas mixtures such as pure xenon or Penning mixtures of xenon in neon, having extremely high peak discharge currents such that a driver circuit is necessary for each electrode line of a proposed large area color display terminal.
  • gas mixtures especially rare gas mixtures such as pure xenon or Penning mixtures of xenon in neon
  • a driver circuit is necessary for each electrode line of a proposed large area color display terminal.
  • a l-million cell display (1024 discharge cells by 1024 discharge cells) with a peak discharge current of one milliamp per cell has a possible total peak discharge current of 1000 amps when all of the panel cells are in the on-state.
  • Present multiplexing electronic circuitry cannot handle this much peak current.
  • the peak gas discharge currents of a multiple gas discharge display/memory phosphor device are substantially decreased by utilizing an ionizable, phosphor stimulating, gaseous mixture consisting essentially of about to 35 percent atoms of argon and about 80 to 65 percent atoms of a xenon-based composition.
  • the xenon-based composition is defined as consisting essentially of about 95 to 100 percent atoms of xenon and 5 to 0 percent atoms of another gaseous component, such as already mentioned hereinbefore, particularly one or more members selected from neon, krypton, nitrogen, helium, and mercury.
  • the gas mixture In addition to the benefit of decreased peak gas discharge currents, the gas mixture also provides lower operating voltages than Xe, similar to Penning mixtures, and slower discharge speed (formative time lag). Therefore, there are inherent resultant advantages in electronic circuitry design and operation. Also the static operating voltage range and the mean memory margins are much higher with the gas mixture of this invention relative to pure xenon or Penning mixtures (40 volts compared to 10 volts) thereby indicating improved dynamic operation.
  • the 20 to 35 atoms percent argon mixture of this invention provides optimum panel operation at a pressure dependant on panel spacing, but generally similar to the Paschen minimum for pure xenon, i.e., about 250 Torr or lower.
  • This invention was arrived at from an investigation of binary rare gas mixture for use in color phosphor DlGl- VUE display/memory panels with the intent purpose of lowering the very high peak discharge currents experienced in phosphor panels using either pure Xe or heavy xenon Penning mixtures.
  • the high xenon concentration is necessary for phosphor stimulation because of its known high ultraviolet light output.
  • Previous work has shown that peak current increases with minority gas concentration in a Penning mixture. It was thought that if the voltage of a predominately xenon mixture could be lowered, without having to make a fast high Xe concentration Penning mixture, the peak current would decrease also.
  • He-Ne mixtures although not Penning mixtures, exhibit slight voltage lowering from either of the individual gases, and a search was made for similar mixtures with xenon.
  • Mixtures of argon in xenon were found to exhibit this ef fect, which is probably associated with ionization of argon atoms with subsequent charge exchange to ArXe or Xe molecules in the discharge, from which the characteristic xenon radiation is emitted.
  • Another possible cause is excitation exchange from argon metastable atoms to ground state xenon atoms, a process with a high probabilty of occurrence.
  • the phosphor is photoluminescent.
  • the term photoluminescent phosphor includes quite generally all solid and liquid, inorganic and organic materials capable of converting an imput of absorbed photons into an output of photons of different energy, the output comprising visible light of a brightness and intensity sufficient for visual display.
  • Typical photoluminescent phosphors contemplated include, not by way of limitation, both activated and non-activated compounds, e.g., the sulfides such as zinc sulfides, zinc-cadmium sulfides, zinc-sulfoselenides; the silicates such as zinc silicates, zinc beryllo-silicate Mg silicates; the tungstates such as calcium tungstates, magnesium tungstates; the phosphates, borates, and arsenates such as calcium phosphates, cadmium borates, zinc borates, magnesium arsenates; and the oxides and the halides such as self-activated zinc oxide, magnesium fluorides, magnesium flyorogermanate.
  • Typical activators include, not by way of limitation, Mn, Eu, Ce, Pb, etc.
  • a phosphor Pl as defined by JEDEC Electrode Tube Council, Publication No. 16A of January 1966, revised February 1969.
  • a gas discharge display/memory device containing at least one dielectric charge storage surface, the phosphor being appropriately applied to such dielectric.
  • the phosphor may be applied to the dielectric by way of any convenient method including, not by way of limitation, vapor deposition; vacuum deposition; chemical vapor deposition, wet spraying or settling upon the dielectric a mixture or solution of the phosphor suspended or dissolved in a liquid, followed by evaporation of the liquid; silk screening; dry spraying of the phosphor upon the dielectric; electron beam evaporation; plasma flame and/or arc spraying and/or deposition; thermal evaporation; laser evaporation; Rf or induction heating evaporation; sputtering target techniques; and/or attachment of the phosphor to the dielectric as disclosed in the copending US. patent application Ser. No. 101,433, filed Dec. 24, 1970 by Robert N. Clark, and assigned to the assignee of the instant patent application.
  • the phosphor to the dielectric (surface or sub-surface) in any suitable geometric shape, pattern, or configuration, symmetrical or asymmetrical as disclosed for example in the copending U.S. Pat. application Ser. No. 98,846, filed Dec. 16, 1970 by Felix H. Brown and Robert F. Schaufele, and
  • FIG. 1 is a partially cut-away plan view of a gaseous discharge display/memory panel as connected to a diagrammatically illustrated source of operating potentials.
  • FIG. 2 is a cross-sectional view (enlarged. but not to proportional scale since the thickness of the gas volume, dielectric members and conductor arrays have been enlarged for purposes of illustration) taken on lines 22 of FIG. 1.
  • FIG. 3 is an explanatory partial cross-sectional view similar to FIG. 2 (enlarged, but not to proportional scale).
  • FIG. 4 is an isometric view of a gaseous discharge dis play/memory panel.
  • the invention utilizes a pair of dielectric films and 11 separated by a thin layer or volume of a gaseous discharge medium 12, the medium 12 producing a copious supply of charges (ions and electrons) which are alternately collectable on the surfaces of the dielectric members at opposed or facing elemental or discrete areas X and Y defined by the conductor matrix on non gas-contacting sides of the dielectric members, each dielectric member presenting large open surface areas and a plurality of pairs of elemental X and Y areas. While the electrically operative structural members such as the dielectric members 10 and 11 and conduc tor matrixes l3 and 14 are all relatively thin (being exaggerated in thickness in the drawings) they are formed on and supported by rigid nonconductive support members 16 and 17 respectively.
  • nonconductive support members 16 and 17 pass light produced by discharge in the elemental gas volumes.
  • they are transparent glass members and these members essentially define the overall thickness and strength of the panel.
  • the thickness of gas layer 12 as determined by spacer 15 is usually under l0 mils and preferably about 4 to 6 mils
  • dielectric layers 10 and 11 over the conductors at the elemental or discrete X and Y areas
  • conductors 13 and 14 about 8,000 angstroms thick.
  • support members 16 and 17 are much thicker (particularly in larger panels) so as to provide as much ruggedness as may be desired to compensate for stresses in the panel.
  • Support members 16 and 17 also serve as heat sinks for heat generated by discharges and thus minimize the effect of temperature on operation of the device. If it is desired that only the memory function be utilized, then none ofthe members need be transparent to light.
  • support members 16 and 17 are not critical.
  • the main function of support members 16 ana 17 are not critical.
  • the main function of support members 16 and 17 is to provide mechanical support and strength for the entire panel, particularly with respect to pressure differential acting on the panel and thermal shock. As noted earlier, they should have thermal expansion characteristics substantially matching the thermal expansion characteristics of dielectric layers l0 and 11. Ordinary Ainch commercial grade soda lime plate glasses have been used for this purpose. Other glasses such as low expansion glasses or transparent devitrified glasses can be used provided they can withstand processing and have expansion characteristics substantially matching expansion characteristics of the dielectric coatings 10 and 11. For given pressure differentials and thickness of plates, the stress and de flection of plates may be determined by following stan dard stress and strain formulas (see R. J. Roark. Formulas for Stress and Strain, McGraw-Hill, 1954).
  • Spacer 15 may be made of the same glass material as dielectric films 10 and 11 and may be an integral rib formed on one of the dielectric members and fused to the other members to form a bakeable hermetic seal enclosing and confining the ionizable gas volume 12. However, a separate final hermetic seal may be effected by a high strength devitrified glass sealant 15S. Tabulation 18 is provided for exhausting the space between dielectric members 10 and 11 and filling that space with the volume of ionizable gas. For large panels small beadlike solder glass spacers such as shown at 158 may be located between conductor intersections and fused to dielectric member 10 and 11 to aid in withstanding stress on the panel and maintain uniformity of thickness of gas volume 12.
  • Conductor arrays 13 and 14 may be formed on support members 16 and 17 by a number of well-known processes, such as photoetching, vacuum deposition, stencil screening, etc. In the panel shown in FIG. 4, the centento-center spacing of conductors in the respective arrays is about 17 mils.
  • Transparent or semitransparent conductive material such as tin oxide, gold or aluminum can be used to form the conductor arrays and should have a resistance less than 3000 ohms per line.
  • Narrow opaque electrodes may alternately be used so that discharge light passes around the edges of the electrodes to the viewer. It is important to select a conductor material that is not attacked during processing by the dielectric material.
  • conductor arrays 13 and 14 may be wires or filaments of copper, gold, silver or aluminum or any other conductive metal or material.
  • 1 mil wire filaments are commercially available and may be used in the invention.
  • formed in situ conductor arrays are preferred since they may be more easily and uniformly placed on and adhered to the support plates 16 and 17.
  • Dielectric layer members 10 and 11 are formed of an inorganic material and are preferably formed in situ as an adherent film or coating which is not chemically or physically effected during bake-out of the panel.
  • One such material is a solder glass such as Kimble SG-68 manufactured by and commercially available from the assignee of the present invention.
  • This glass has thermal expansion characteristics substantially matching the thermal expansion characteristics of certain soda-lime glasses, and can be used as the dielectric layer when the support members 16 and 17 are soda-lime glass plates.
  • Dielectric layers 10 and 11 must be smooth and have a dielectric strength of about 1000 v. and be electrically homogeneous on a microscopic scale (e.g., no cracks, bubbles, crystals, dirt, surface films, etc.).
  • the surfaces of dielectric layers 10 and 11 should be good photoemitters of electrons in a baked out condition.
  • dielectric layers 10 and 11 may be overcoated with materials de signed to produce good electron emission, as in US. Letters Pat. 3,634,719. issued to Roger E. Ernsthausen.
  • at least one of dielectric layers 10 and 11 should pass light generated on dis charge and be transparent or translucent and, preferably, both layers are optically transparent.
  • the preferred spacing between surfaces of the dielectric films is about 3 to 6 mils with conductor arrays 13 and 14 having center-to-center spacing of about l7 mils.
  • conductors 14-1 14-4 and support member 17 extend beyond the enclosed gas volume 12 and are exposed for the purpose of making electrical connection to interface and addressing circuitry 19.
  • the ends of conductors 13-1 13-4 on support member 16 extend beyond the enclosed gas volume 12 and are exposed for the purpose of making electrical connection to interface and addressing circuitry 19.
  • the interface and addressing circuitry or system 19 may be relatively inexpensive line scan systems or the somewhat more expensive high speed random access systems. In either case, it is to be noted that a lower amplitude of operating potentials helps to reduce problems associated with the interface circuitry between the addressing system and the display/memory panel, per se. Thus, by providing a panel having greater uniformity in the discharge char acteristics throughout the panel, tolerances and operating characteristics of the panel with which the interfacing circuitry cooperate, are made less rigid.
  • gaseous medium consists essentially of 20 to 35 percent atoms of argon and to 65 percent atoms ofa xenon-based composition, whereby the peak gas discharge currents are decreased and the mean memory margin is increased.
  • the xenonbased composition consists essentially of about to percent atoms of xenon and about 5 to 0 percent atoms of another selected component.
  • the device is of the display/memory type and contains at least one dielectrically insulated electrode.

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  • Gas-Filled Discharge Tubes (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
US279875A 1972-08-11 1972-08-11 Gas mixture for gas discharge device Expired - Lifetime US3886393A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US279875A US3886393A (en) 1972-08-11 1972-08-11 Gas mixture for gas discharge device
JP7560273A JPS5422867B2 (sr) 1972-08-11 1973-07-04
IT51382/73A IT989826B (it) 1972-08-11 1973-07-10 Perfezionamento nei dispositivi di presentazione memorizzazione a scarica multipla in gas
CA177,562A CA998087A (en) 1972-08-11 1973-07-30 Gas mixture for gas discharge device
FR7328836A FR2195835B1 (sr) 1972-08-11 1973-08-07
DE2339923A DE2339923C3 (de) 1972-08-11 1973-08-07 Mehrfach-Gasentladungsvorrichtung
GB3792873A GB1443558A (en) 1972-08-11 1973-08-10 Gas discharge device
US412576A US3904915A (en) 1972-08-11 1973-11-05 Gas mixture for gas discharge device

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US279875A US3886393A (en) 1972-08-11 1972-08-11 Gas mixture for gas discharge device

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US412576A Continuation-In-Part US3904915A (en) 1972-08-11 1973-11-05 Gas mixture for gas discharge device

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US (1) US3886393A (sr)
JP (1) JPS5422867B2 (sr)
CA (1) CA998087A (sr)
DE (1) DE2339923C3 (sr)
FR (1) FR2195835B1 (sr)
GB (1) GB1443558A (sr)
IT (1) IT989826B (sr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013912A (en) * 1973-11-05 1977-03-22 Owens-Illinois, Inc. Gas mixture for glow discharge device
US4041345A (en) * 1975-12-31 1977-08-09 International Business Machines Corporation Blue color AC gas discharge display panel and method
US4236096A (en) * 1976-12-14 1980-11-25 Siemens Aktiengesellschaft Plasma image display device
US4277720A (en) * 1978-11-17 1981-07-07 U.S. Philips Corporation Low-pressure mercury vapor discharge lamp
US4277717A (en) * 1978-11-17 1981-07-07 U.S. Philips Corporation Low-pressure sodium vapor discharge lamp
US5051648A (en) * 1989-03-17 1991-09-24 Toshiba Lighting & Technology Corporation Flat type low pressure gas discharge lamp
US5514934A (en) * 1991-05-31 1996-05-07 Mitsubishi Denki Kabushiki Kaisha Discharge lamp, image display device using the same and discharge lamp producing method
US5914562A (en) * 1995-02-06 1999-06-22 Philips Electronics North America Corporation Anodic bonded plasma addressed liquid crystal displays
WO2001056053A1 (fr) * 2000-01-26 2001-08-02 Matsushita Electric Industrial Co., Ltd. Dispositif electroluminescent a decharge et son procede de fabrication
US6291943B1 (en) * 1997-08-14 2001-09-18 Matsushita Electric Industrial Co., Ltd. Gas discharge panel and gas light-emitting device
US20030218579A1 (en) * 2002-05-27 2003-11-27 Hitachi, Ltd. Plasma display panel and imaging device using the same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4147958A (en) * 1977-06-30 1979-04-03 International Business Machines Corporation Multicolor gas discharge display memory panel
DE2929270A1 (de) * 1979-07-19 1981-02-12 Siemens Ag Plasma-bildanzeigevorrichtung
DE3133743A1 (de) * 1981-08-26 1983-03-10 Battelle-Institut E.V., 6000 Frankfurt Verfahren zur beseitigung der wechselwirkung zwischen nachbarzellen in gasentladungs-matrixbauelementen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701916A (en) * 1971-02-01 1972-10-31 Burroughs Corp Display panel having gas-filled cells utilizing phosphor materials
US3704386A (en) * 1971-03-19 1972-11-28 Burroughs Corp Display panel and method of operating said panel to produce different colors of light output

Family Cites Families (2)

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US2714682A (en) * 1952-06-27 1955-08-02 Westinghouse Electric Corp Low pressure fluorescent and discharge lamps
US4027191A (en) * 1970-12-16 1977-05-31 Schaufele Robert F Phosphor geometry for color displays from a multiple gaseous discharge display/memory panel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3701916A (en) * 1971-02-01 1972-10-31 Burroughs Corp Display panel having gas-filled cells utilizing phosphor materials
US3704386A (en) * 1971-03-19 1972-11-28 Burroughs Corp Display panel and method of operating said panel to produce different colors of light output

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4013912A (en) * 1973-11-05 1977-03-22 Owens-Illinois, Inc. Gas mixture for glow discharge device
US4041345A (en) * 1975-12-31 1977-08-09 International Business Machines Corporation Blue color AC gas discharge display panel and method
US4236096A (en) * 1976-12-14 1980-11-25 Siemens Aktiengesellschaft Plasma image display device
US4277720A (en) * 1978-11-17 1981-07-07 U.S. Philips Corporation Low-pressure mercury vapor discharge lamp
US4277717A (en) * 1978-11-17 1981-07-07 U.S. Philips Corporation Low-pressure sodium vapor discharge lamp
US5051648A (en) * 1989-03-17 1991-09-24 Toshiba Lighting & Technology Corporation Flat type low pressure gas discharge lamp
US5514934A (en) * 1991-05-31 1996-05-07 Mitsubishi Denki Kabushiki Kaisha Discharge lamp, image display device using the same and discharge lamp producing method
US5914562A (en) * 1995-02-06 1999-06-22 Philips Electronics North America Corporation Anodic bonded plasma addressed liquid crystal displays
US6291943B1 (en) * 1997-08-14 2001-09-18 Matsushita Electric Industrial Co., Ltd. Gas discharge panel and gas light-emitting device
WO2001056053A1 (fr) * 2000-01-26 2001-08-02 Matsushita Electric Industrial Co., Ltd. Dispositif electroluminescent a decharge et son procede de fabrication
US6744208B2 (en) 2000-01-26 2004-06-01 Matsushita Electric Industrial Co., Ltd. Discharge light-emitting device and method manufacture thereof
KR100723751B1 (ko) 2000-01-26 2007-05-30 마츠시타 덴끼 산교 가부시키가이샤 가스방전 발광장치 및 그 제조방법
US20030218579A1 (en) * 2002-05-27 2003-11-27 Hitachi, Ltd. Plasma display panel and imaging device using the same
US6822627B2 (en) * 2002-05-27 2004-11-23 Hitachi, Ltd. Plasma display panel and imaging device using the same
US20050052362A1 (en) * 2002-05-27 2005-03-10 Hitachi, Ltd. Plasma display panel and imaging device using the same
US7071901B2 (en) * 2002-05-27 2006-07-04 Hitachi, Ltd. Plasma display panel and imaging device using the same
US20060192732A1 (en) * 2002-05-27 2006-08-31 Hitachi, Ltd. Plasma display panel and imaging device using the same
US20080218439A1 (en) * 2002-05-27 2008-09-11 Hitachi, Ltd. Plasma display panel and imaging device using the same
US7450090B2 (en) 2002-05-27 2008-11-11 Hitachi, Ltd. Plasma display panel and imaging device using the same

Also Published As

Publication number Publication date
JPS4953761A (sr) 1974-05-24
DE2339923C3 (de) 1980-09-18
FR2195835B1 (sr) 1977-08-26
DE2339923A1 (de) 1974-02-14
GB1443558A (en) 1976-07-21
DE2339923B2 (de) 1976-02-26
FR2195835A1 (sr) 1974-03-08
CA998087A (en) 1976-10-05
IT989826B (it) 1975-06-10
JPS5422867B2 (sr) 1979-08-09

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