US3808497A - Gaseous discharge device and method of spacing the plates thereof - Google Patents

Gaseous discharge device and method of spacing the plates thereof Download PDF

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Publication number
US3808497A
US3808497A US00251483A US25148372A US3808497A US 3808497 A US3808497 A US 3808497A US 00251483 A US00251483 A US 00251483A US 25148372 A US25148372 A US 25148372A US 3808497 A US3808497 A US 3808497A
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US
United States
Prior art keywords
rods
spacer
plates
sealing
spacer elements
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
US00251483A
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English (en)
Inventor
J Greeson
P Haberland
M Costa
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Priority to US00251483A priority Critical patent/US3808497A/en
Priority to IT20475/73A priority patent/IT979180B/it
Priority to FR7311019A priority patent/FR2183692B1/fr
Priority to SE7304751A priority patent/SE390848B/xx
Priority to DE19732317598 priority patent/DE2317598C3/de
Priority to JP4052873A priority patent/JPS5333236B2/ja
Priority to NLAANVRAGE7305102,A priority patent/NL174101C/xx
Priority to CH529273A priority patent/CH545524A/xx
Priority to CA169,266A priority patent/CA989461A/en
Priority to GB1972073A priority patent/GB1438142A/en
Priority to ES414477A priority patent/ES414477A1/es
Priority to DK250473AA priority patent/DK141568B/da
Priority to US407770A priority patent/US3858284A/en
Application granted granted Critical
Publication of US3808497A publication Critical patent/US3808497A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
    • G11C11/26—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using discharge tubes
    • G11C11/28—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using discharge tubes using gas-filled tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/26—Sealing together parts of vessels
    • H01J9/261—Sealing together parts of vessels the vessel being for a flat panel display

Definitions

  • BBQ-344+ SR 1 1111 3,808,497 was KR asaoailw 1 51 Apr 30 1974 i 1 GASEOUS DISCHARGE DEVICE AND Primary ExaminerHerman Karl Saalbach METHOD OF SPACING THE PLATES Assistant Examinerl ,awrence J. Dahl T EREOF Attorney, Agent, or Firm-Henry E. Otto, Jr., et al.
  • This invention relates to gas discharge display and/or memory devices, and moreparticularly to improved devices of this type embodying a method of spacing the plates with spacer elements that do not inhibit flow of gas particles between areas separated by such spacer elements.
  • the plates are held precisely spaced at a preselected constant distance by two sets of identically sized crisscrossing spacer rods disposed orthogonally with respect to each other in overlapping lattice-like contact within the sealed gas-containing chamber.
  • the spacer rods of one set contact the dielectric coating over the parallel conductors on one of the plates; and the spacer rods of the other set contact the dielectric coating over the orthogonally arrangedparallel conductors on the other plate. Since these spacer rods have diameters equal to only one-half of said preselected constant distance, flow of gas particles between areas separated by the spacer rods is not significantly impeded.
  • the spacer rods associated with the conductors on each plate are disposed between, and extend parallel to, the conductors on that particular plate.
  • the diameters of the spacer rods preferably vary between approximately 0.002 inch and 0.0037 inch, according to which of the embodiments, hereinafter described, is employed.
  • FIG. 4 is a fragmentary sectional view, similar to FIG.
  • the gaseous discharge display and/or memory device constructed according to this embodiment and illustrated in FIGS. 1-3 comprises, briefly, an upper glass plate 10 and a lower glass plate 11, each including substrates 12,13, respectively, on the facing-surfaces of which are formed passivated metalized conductor arrays 14,15, respectively.
  • the arrays 14,15 each compriserespective pluralities of parallel conductors, the conductors of array 14 being disposed orthogonally relative to those of array 15.
  • the ends of the array on each plate extend beyond the edges of the other plate to facilitate connection to alternate conductors of the array, in conventional manner.
  • the conductors of each array 14,15 are overlaid with respective transparent dielectric coatings 16,17, preferably of glass, which provide flat surfaces 18,19, respectively.
  • the plates 10,11 are fused into an integrated structure in the following-manner.
  • Unfused, heat-fusible sealing material preferably in the form of rods 20 of low-softening-point glass, are placed in a window- I frame border-like pattern on surface 19 of lower plate Toward this end, and according to the invention, ap-
  • These rods 20 are of an identical diameter that is significantly greater than the precise preselected dis-' tance at which these plates are ultimately to be joined.
  • two sets of identically sized upper and lower spacer rods 21,22 are then placed in overlaying relation in a two-stratum crisscross pattern within the border.
  • the lower rods 22 extend parallel to, and are equidistantly spaced between, adjacent pairs of conductors in array 15 and rest on flat surface 19; whereas upper rods 21 overlay and rest on lower rods 22 in a predetermined lateral spacing hereinafter to be described.
  • the combined height of the overlapped rods21,22 is substantially less than the diameter of the sealing rods 20.
  • the upper plate 10 is now positioned over the lower plate 11 with upper plate surface 18 contacting sealing rods 20 and transversely positioned such that the upper spacer rods 21 extend parallel to, and equidistant from, but substantially below, pairs of adjacent conductors of array 14 (as a result of the aforesaid predetermined spacing of rods 21 on rods 22).
  • Rods 21,22 which are preferably formed of glass, have a significantly higher softening point than that of the sealing rods.
  • the plates will be maintained at a precise preselected distance by the crisscross pattern of overlapping spaccr rods 21,22. Because these spacer rods have a diameter which is equal to only one-half of the totalconstant space between the surfaces 18,19, the gas particles, metastable ions, protons, etc., may flow without significant restriction between the various areas into which the chamber 23 is separated by the lattice arrangement of spacer rods.
  • the sealing rods 20' preferably have a diameter of about 0.040 inch, and the spacer rods 21,22 preferably have a diameter of approximately 0.002 inch; and dielectric coatings 16,17 have a softening temperature which is above the temperature to which the assemblage is subjected during the above-described fusing operation so that the rods 21,22 will-contact, but not penetrate, the dielectric surfaces18,19.
  • the small size of the spacer rods renders them substantially indistinguishable from the glass plates and hence is aesthetically desirable.
  • blocking of the display area at the crossover points of the respective rods 21,22 is minimized by spacing these rods between conductors so as not to blank out any appreciable illumination upon firing of cells comprised of conductors adjacent to these rods.
  • the upper and lower spacing rods 2l',22', respectively are of somewhat larger diameter, such as 0.0037 inch; and the coatings l6',l7 are of a dielectric having a softening temperature which is below the temperature to which the assemblage is heated during the fusing process.
  • the spacer rods 21,22 will penetrate the di-- electric coatings until they contact the surfaces of the respective substrates 12,13.
  • the constant spacing between the plates will be defined by respective contacts of the spacer rods 21,22' with the substrates rather than with the dielectric coatings; however, the actual constant height of the chamber 23 will still be that corresponding to the precisely fixed spacing between the flat portions of surfaces 18',19'.
  • a gaseous discharge display device comprising a pair of glass plates each including substrates on which are provided parallel conductors overlaid with a dielectric coating to present a flat surface
  • means including a frame-like border of lowsoftening-point sealing material sealing said plates in superposed spaced parallel relation, with said surfaces adjacent, to provide within the border a sealed chamber containing an illuminable gas, the conductors on each plate being orthogonal to those on the other plate, and
  • spacer means for-maintaining said surfaces precisely spaced at a preselected constant distance
  • said spacer means comprising two sets of spacer elements of identical height disposed orthogonally with respect to each other in overlapping latticelike contact within the chamber, with all elements of each respective set contacting only a corresponding respective one of said surfaces, whereby the gas may flow either over or under the elements or around the crossover points thereof without significant restriction to substantially all areas of said sealed chamber separated by said spacer elements.
  • At least one of the spacer elements that contacts the said surface of the other of said plates is disposed substantially equidistant between, and extends parallel to, a pair of adjacent conductors on said other plate.
  • said spacer elements are rods of glass having a softening point higher than that of said sealing means, and said rods rest on and do not significantly penetrate one of said flat surfaces.
  • adjacent said spacer elements are rods of glass having a softening point higher than that of said sealing means and higher than that of the dielectric coating
  • said rods penetrate said dielectric coating and contact the substrate but project beyond the level of said surface to make said lattice-like overlapping space-defining contact with each other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Computer Hardware Design (AREA)
  • Manufacturing & Machinery (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
US00251483A 1972-05-08 1972-05-08 Gaseous discharge device and method of spacing the plates thereof Expired - Lifetime US3808497A (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US00251483A US3808497A (en) 1972-05-08 1972-05-08 Gaseous discharge device and method of spacing the plates thereof
IT20475/73A IT979180B (it) 1972-05-08 1973-02-16 Dispositivo di immagazzinamento e o visualizzazione a scarica gassosa
FR7311019A FR2183692B1 (de) 1972-05-08 1973-03-21
SE7304751A SE390848B (sv) 1972-05-08 1973-04-04 Metod for framstellning av en gasurladdningsindikator
DE19732317598 DE2317598C3 (de) 1972-05-08 1973-04-07 Gasentladungsanordnung und Verfahren zur Herstellung einer solchen
JP4052873A JPS5333236B2 (de) 1972-05-08 1973-04-11
NLAANVRAGE7305102,A NL174101C (nl) 1972-05-08 1973-04-12 Werkwijze voor het vormen van een gesloten ruimte met constante hoogte, alsmede een gasontladingsweergaveen/of geheugenpaneel, aldus vervaardigd.
CH529273A CH545524A (de) 1972-05-08 1973-04-12
CA169,266A CA989461A (en) 1972-05-08 1973-04-13 Gaseous discharge device and method of spacing the plates thereof
GB1972073A GB1438142A (en) 1972-05-08 1973-04-25 Gas discharge display panel
ES414477A ES414477A1 (es) 1972-05-08 1973-05-07 Un dispositivo de presentacion visual de descarga en gas.
DK250473AA DK141568B (da) 1972-05-08 1973-05-07 Gasudladningspanel og fremgangsmåde til dets fremstilling.
US407770A US3858284A (en) 1972-05-08 1973-10-18 Method of spacing the plates of a gaseous discharge device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00251483A US3808497A (en) 1972-05-08 1972-05-08 Gaseous discharge device and method of spacing the plates thereof

Publications (1)

Publication Number Publication Date
US3808497A true US3808497A (en) 1974-04-30

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ID=22952158

Family Applications (1)

Application Number Title Priority Date Filing Date
US00251483A Expired - Lifetime US3808497A (en) 1972-05-08 1972-05-08 Gaseous discharge device and method of spacing the plates thereof

Country Status (11)

Country Link
US (1) US3808497A (de)
JP (1) JPS5333236B2 (de)
CA (1) CA989461A (de)
CH (1) CH545524A (de)
DK (1) DK141568B (de)
ES (1) ES414477A1 (de)
FR (1) FR2183692B1 (de)
GB (1) GB1438142A (de)
IT (1) IT979180B (de)
NL (1) NL174101C (de)
SE (1) SE390848B (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2296935A1 (fr) * 1975-01-02 1976-07-30 Owens Illinois Inc Substrats en verre comportant des agents de scellement prefixes, utilises dans les dispositifs a decharges dans un gaz
US4199228A (en) * 1977-06-01 1980-04-22 Commissariat A L'energie Atomique Method of fabrication of a liquid-display cell and a cell obtained by means of said method
US4235001A (en) * 1975-09-17 1980-11-25 Haruhiro Matino Gas display panel fabrication method
US4341445A (en) * 1979-05-18 1982-07-27 Hitachi, Ltd. Liquid crystal display element and production thereof
EP0683920A1 (de) * 1993-02-01 1995-11-29 Silicon Video Corporation Flachtafel-vorrichtung mit innerer tragstruktur und/oder relief-schwarzmatrix
WO1997049113A1 (en) * 1996-06-18 1997-12-24 Ppg Industries, Inc. Spacer units, image display panels and methods for making and using the same
WO1997049112A1 (en) * 1996-06-18 1997-12-24 Ppg Industries, Inc. Spacers, spacer units, image display panels and methods for making and using the same
US5865930A (en) * 1992-04-10 1999-02-02 Candescent Technologies Corporation Formations of spacers suitable for use in flat panel displays

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2505513B1 (de) * 1975-02-10 1976-08-05 Siemens Ag Fluessigkristall-zelle mit glaslotverschluss
FR2755294A1 (fr) * 1996-10-25 1998-05-01 Pixtech Sa Procede et dispositif d'assemblage d'un ecran plat de visualisation
FR2781308A1 (fr) * 1998-07-15 2000-01-21 Thomson Plasma Procede de realisation de moyens d'entretoisement pour panneaux de visualisation

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3499167A (en) * 1967-11-24 1970-03-03 Owens Illinois Inc Gas discharge display memory device and method of operating
US3602756A (en) * 1969-12-22 1971-08-31 Engelhard Min & Chem Gas ionization display device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3499167A (en) * 1967-11-24 1970-03-03 Owens Illinois Inc Gas discharge display memory device and method of operating
US3602756A (en) * 1969-12-22 1971-08-31 Engelhard Min & Chem Gas ionization display device

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2296935A1 (fr) * 1975-01-02 1976-07-30 Owens Illinois Inc Substrats en verre comportant des agents de scellement prefixes, utilises dans les dispositifs a decharges dans un gaz
US4235001A (en) * 1975-09-17 1980-11-25 Haruhiro Matino Gas display panel fabrication method
US4199228A (en) * 1977-06-01 1980-04-22 Commissariat A L'energie Atomique Method of fabrication of a liquid-display cell and a cell obtained by means of said method
US4341445A (en) * 1979-05-18 1982-07-27 Hitachi, Ltd. Liquid crystal display element and production thereof
US6489718B1 (en) 1982-04-10 2002-12-03 Candescent Technologies Corporation Spacer suitable for use in flat panel display
US5916396A (en) * 1992-04-10 1999-06-29 Candescent Technologies Corporation Formation of spacers suitable for use in flat panel displays
US6157123A (en) * 1992-04-10 2000-12-05 Candescent Technologies Corporation Flat panel display typically having transition metal oxide in ceramic core or/and resistive skin of spacer
US5985067A (en) * 1992-04-10 1999-11-16 Candescent Technologies Corporation Formation of spacers suitable for use in flat panel displays
US5865930A (en) * 1992-04-10 1999-02-02 Candescent Technologies Corporation Formations of spacers suitable for use in flat panel displays
EP0683920A1 (de) * 1993-02-01 1995-11-29 Silicon Video Corporation Flachtafel-vorrichtung mit innerer tragstruktur und/oder relief-schwarzmatrix
EP0683920A4 (de) * 1993-02-01 1998-04-15 Silicon Video Corp Flachtafel-vorrichtung mit innerer tragstruktur und/oder relief-schwarzmatrix.
WO1997049112A1 (en) * 1996-06-18 1997-12-24 Ppg Industries, Inc. Spacers, spacer units, image display panels and methods for making and using the same
US5834891A (en) * 1996-06-18 1998-11-10 Ppg Industries, Inc. Spacers, spacer units, image display panels and methods for making and using the same
US5811926A (en) * 1996-06-18 1998-09-22 Ppg Industries, Inc. Spacer units, image display panels and methods for making and using the same
WO1997049113A1 (en) * 1996-06-18 1997-12-24 Ppg Industries, Inc. Spacer units, image display panels and methods for making and using the same

Also Published As

Publication number Publication date
DK141568C (de) 1980-10-06
GB1438142A (en) 1976-06-03
NL7305102A (de) 1973-11-12
JPS4924357A (de) 1974-03-04
DK141568B (da) 1980-04-21
CH545524A (de) 1974-01-31
CA989461A (en) 1976-05-18
DE2317598A1 (de) 1973-11-22
FR2183692B1 (de) 1976-05-21
IT979180B (it) 1974-09-30
DE2317598B2 (de) 1976-11-18
ES414477A1 (es) 1976-02-01
SE390848B (sv) 1977-01-24
FR2183692A1 (de) 1973-12-21
JPS5333236B2 (de) 1978-09-13
NL174101C (nl) 1984-04-16

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