US3900752A - Glow discharge display device with intersecting electrode systems sealed between opposing plates - Google Patents

Glow discharge display device with intersecting electrode systems sealed between opposing plates Download PDF

Info

Publication number
US3900752A
US3900752A US411760A US41176073A US3900752A US 3900752 A US3900752 A US 3900752A US 411760 A US411760 A US 411760A US 41176073 A US41176073 A US 41176073A US 3900752 A US3900752 A US 3900752A
Authority
US
United States
Prior art keywords
plate
conductors
posts
electrically insulating
ridges
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
US411760A
Other languages
English (en)
Inventor
George Frederick Weston
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.)
US Philips Corp
Original Assignee
US Philips Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by US Philips Corp filed Critical US Philips Corp
Application granted granted Critical
Publication of US3900752A publication Critical patent/US3900752A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
    • H01J17/49—Display panels, e.g. with crossed electrodes, e.g. making use of direct current
    • H01J17/492—Display panels, e.g. with crossed electrodes, e.g. making use of direct current with crossed electrodes
    • H01J17/494—Display panels, e.g. with crossed electrodes, e.g. making use of direct current with crossed electrodes using sequential transfer of the discharges, e.g. of the self-scan type

Definitions

  • ABSTRACT A glow discharge display panel comprising a pair of parallel plates between and parallel to which extend first and second sets of elongate conductors with conductors of the first set crossing those of the second set forming a cr0ss-bar addressing system for the array of gas discharge paths defined by the effective cross-points of the conductors of the first set with those of the second.
  • These discharge paths are physically isolated from each other by an interlocking system of ridges (which may be replaced by rods) and posts provided on the facing surface of the plates.
  • the posts extend between the conductors of the first set towards the second plate so that each part of each conductor of the second set which links a pair of adjacent cross-points is situated between the end of a post and the second plate.
  • the ridges or rods extend between the posts of the ends of which face each conductor of the second set and the posts the ends of which face the or each adjacent conductor of the second set.
  • the posts and ridges or rods are preferably opaque.
  • This invention relates to a glow-discharge display device comprising first and second substantially parallel electrically insulating plates facing one another with a discharge gas atmosphere between them, a first and second sets of elongate electrical conductors extending between and substantially parallel to the plates with the conductors of the first set spaced from and crossing those of the second set to form a cross-bar addressing system for the resulting array of electric discharge paths through said atmosphere defined by the effective cross-points of the conductors of the first set with those of the second.
  • the invention provides a glow-discharge display device comprising first and second substantially parallel electrically insulating plates facing one another with a discharge gas atmosphere between them, first and second sets of elongate electrical conductors extending between and substantially parallel to the plates with the conductors of the first set spaced from and crossing those of the second set to form a cross-bar addressing system for the resulting array of electric discharge paths through said atmosphere defined by the effective cross-points of the conductors of the first set with those of the second.
  • the posts may be islands left by providing first and second sets of parallel grooves at an angle to one another in the surface of the first plate which faces the second plate.
  • the electrically insulating material extending in the length direction of the conductors of the second set of conductors may be in the form of ridges formed by providing parallel grooves in the surface of the second plate which faces the first plate.
  • the grooves may be provided by means of a numerically controlled machine tool.
  • the posts and/or ridges may be built up by silk screen printing using suitably electrically insulating inks which are later fired in the manner of the technology employed for thick film circuits, the required height of the posts and/or ridges being obtained by the application of several printed layers one on the other.
  • the posts, the first plate, and the insulating material extending in the length direction of the conductors of the second set of conductors are opaque and the second plate is transparent. If said insulating material is opaque and the second plate is transparent then said material is preferably formed by rods laid between the corresponding posts, rather than by providing parallel grooves in the relevant surface of the second plate, because the latter method would necessitate using a laminated (part opaque, part transparent) starting plate unless the silk screen printing method is employed.
  • FIG. I is a perspective view of a first plate and a first set of conductors
  • FIG. 2 is a perspective view of a second plate and a second set of conductors
  • FIGS. 3 and 4 are cross-sections of part of a glowdischarge display device including the plates and conductors of FIGS. 1 and 2', and
  • FIGS. 5 and 6 are cross-sections of part of an alternative glow-discharge display device.
  • an opaque electrically insulating glass plate 1 has a square array of posts 2 on its upper surface.
  • the posts have been produced by machining two orthogonal sets of parallel grooves 4 and 5 in this upper surface.
  • a parallel electrically conductive cathode strip 3 is provided in each groove 4 of one set.
  • FIG. 2 shows a second electrically insulating glass plate 6 which is transparent and has parallel ridges 7 formed on its upper surface by providing a set of parallel grooves 8 in this surface.
  • the grooves 8 correspond with the posts 2 of FIG. 1 so the ridges 7 can fit snugly into the grooves 5.
  • An anode wire 9 is provided in each groove 8.
  • the ridges 7 are opaque, the starting material for the plate 6 and ridges 7 having been a part opaque, part transparent laminated plate, the grooves 8 being in the opaque lamination and having a depth equal to the thickness thereof.
  • FIGS. 3 and 4 the assembly including the plate 6 of FIG. 2 has been inverted and the ridges 7 have been slotted into the grooves S of the assembly of FIG. 1 to form an electric glow discharge display device.
  • FIG. 3 is a crosssection taken along IIIIII in FIGS. I and 3 and
  • FIG. 4 is a cross-section taken along IVlV in FIGS. 1 and 2.
  • the two plates are sealed all round by means of glaze 11 and the spaces between them filled with a suitable electric glow-discharge gas atmosphere, for example a Penning gas atmosphere or pure neon at a pressure of several hundred Torr, together with a little mercury vapour.
  • a suitable electric glow-discharge gas atmosphere for example a Penning gas atmosphere or pure neon at a pressure of several hundred Torr, together with a little mercury vapour.
  • the various components of the device preferably all have approximately the same coefficient of thermal expansion.
  • the components 1, 2 and 7 may be made of glass, for example, a glass available under the Registered Trade Mark FUSITE K
  • the plate 6 may be made of glass, for example, a glass available under the type number 7059 CORNING
  • the strips 3 and wires 9 may be made of an iron-nickel-cobalt alloy, for example an alloy available under the Registered Trade Mark KOVAR.”
  • the spacing between the strips 3 and wires 9 may be 0.6 mm at their cross-points and the section of each cavity 10 taken perpendicular to the discharge path through it may be a square of 0.8 mm wide.
  • the posts 2 may also be square.
  • any discharge cavity 10 may be addressed by applying an operating potential of i.e. +250 volts to the corresponding anode wire 9 relative to the corresponding cathode strip 3, to produce a luminous discharge therein, sequential energization of selected cavities building up a required display. It will be evident that a practical device will normally have more than the twenty discharge cavities of the device illustrated.
  • FIGS. 5 and 6 are cross-sections, similar to those of FIGS. 3 and 4 respectively, of an alternative construction to that shown in H68. 1 to 4 in which the ridges 7 have been replaced by opaque electrically insulating glass rods 12 laid between the posts 2. Otherwise the construction is similar to that shown in FIGS. 1 to 4.
  • the rods 12 may for example, be of rectangular or circular cross-section and preferably fit snugly into the corresponding groove 5 (FIG. 1) and contact the (now substantially flat) plate 6.
  • a glow discharge display device comprising first and second substantially parallel electrically insulating plates facing one another with a discharge gas atmosphere bctween them, first and second sets of elongate electrical conductors extending between and substantially parallel to the plates with the conductors of the first set spaced from and crossing those of the second set to form a cross'bar addressing system for the resulting array of electric discharge paths through said atmosphere defined by the effective cross-points of the conductors of the first set with those of the second, the surface of the first plate which faces the second plate comprising an array of electrically insulating posts thereon which extend between the conductors of the first set towards the second plate, the conductors of the second set running between the end of said posts and the second plate so that each part of each conductor of the second set which links a pair of adjacent said crosspoints is situated between the end of an individual post and the second plate, and members on said second plate of electrically insulating material extending in the length direction of the conductors of the second set to fill the space formed by the
  • a device as claimed in claim I wherein said members of electrically insulating material are in the form of substantially opaque rods laid between the corresponding posts.

Landscapes

  • Gas-Filled Discharge Tubes (AREA)
US411760A 1972-11-20 1973-11-01 Glow discharge display device with intersecting electrode systems sealed between opposing plates Expired - Lifetime US3900752A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5350872 1972-11-20

Publications (1)

Publication Number Publication Date
US3900752A true US3900752A (en) 1975-08-19

Family

ID=10468066

Family Applications (1)

Application Number Title Priority Date Filing Date
US411760A Expired - Lifetime US3900752A (en) 1972-11-20 1973-11-01 Glow discharge display device with intersecting electrode systems sealed between opposing plates

Country Status (6)

Country Link
US (1) US3900752A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS4984177A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA991239A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2354497A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2207352B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1345100A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005402A (en) * 1974-04-16 1977-01-25 Sony Corporation Flat panel display apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920007977B1 (ko) * 1990-07-03 1992-09-19 삼성전관 주식회사 플라즈마 표시소자와 그 제조방법

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700946A (en) * 1971-08-20 1972-10-24 Burroughs Corp Gaseous display panel with apertured, metallic strip-like, scanning cathodes
US3803439A (en) * 1972-09-29 1974-04-09 Oki Electric Ind Co Ltd Cold cathode discharge display apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700946A (en) * 1971-08-20 1972-10-24 Burroughs Corp Gaseous display panel with apertured, metallic strip-like, scanning cathodes
US3803439A (en) * 1972-09-29 1974-04-09 Oki Electric Ind Co Ltd Cold cathode discharge display apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4005402A (en) * 1974-04-16 1977-01-25 Sony Corporation Flat panel display apparatus

Also Published As

Publication number Publication date
FR2207352A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-06-14
DE2354497A1 (de) 1974-05-30
GB1345100A (en) 1974-01-30
CA991239A (en) 1976-06-15
FR2207352B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1977-01-07
JPS4984177A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-08-13

Similar Documents

Publication Publication Date Title
US3742279A (en) Segmented electrode display panel having closed structure
US3418509A (en) Electrical discharge character indicator tube
US3042823A (en) High speed electronic memory
US3646384A (en) One-sided plasma display panel
US3811061A (en) Plane surface discharge plasma display panel
US3499167A (en) Gas discharge display memory device and method of operating
US3935494A (en) Single substrate plasma discharge cell
US3829734A (en) Glow discharge display device
US3821588A (en) Display panel having flat side edges to permit butting together plural panels
US2967965A (en) Luminous display panel
US3231776A (en) Display device
US3701918A (en) Gaseous-flow, discharge display device with an array of hollow cathodes
US3602756A (en) Gas ionization display device
US3611019A (en) Gas panel apparatus and method
US3619698A (en) Display panel
US3631287A (en) Gas discharge display/memory panel
US3900752A (en) Glow discharge display device with intersecting electrode systems sealed between opposing plates
US3665238A (en) Electric gas discharge tube having vacuum tight sealing means for a plurality of supply leads positioned close together
US3614511A (en) Gas discharge display memory device
US3776613A (en) Gas-discharge display panel
US3626245A (en) Display panel having a plurality of display registers
US3739218A (en) Display panel having metal cell sheet
US3619700A (en) Gas cell display panel utilizing corrugated electrodes
US3426248A (en) Planar visual readout display devices
US3701916A (en) Display panel having gas-filled cells utilizing phosphor materials