US3706899A - A gas discharge display panel with mineral powder between apertured matrix and envelope seal - Google Patents

A gas discharge display panel with mineral powder between apertured matrix and envelope seal Download PDF

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Publication number
US3706899A
US3706899A US107688A US3706899DA US3706899A US 3706899 A US3706899 A US 3706899A US 107688 A US107688 A US 107688A US 3706899D A US3706899D A US 3706899DA US 3706899 A US3706899 A US 3706899A
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United States
Prior art keywords
matrix
slabs
gas
bond
mineral powder
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Expired - Lifetime
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US107688A
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English (en)
Inventor
Jean-Pierre Galves
Henri Monfroy
Jean-Philippe Reboul
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Thales SA
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Thomson CSF SA
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Filing date
Publication date
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    • 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

  • ABSTRACT In a gas-discharge panel comprising a matrix inserted between two thick slabs scaled to one another by a bond surrounding the matrix, the fillingof the space extending between the matrix and the bond by a mineral powder, of small glass balls for instance.
  • SHEET 1 [IF 2 The present invention relates to an improvement in gas-discharge display panels.
  • the thin glass plates bear against the matrix; such arrangements are fragile, because of the necessarily small thickness of the matrix and of the glass plates in the light of the operating voltages generally employed. This fragility is obviously a major drawback.
  • the thin glass plates, integral with the slabs are kept apart from the matrix, the two slabs being spaced either by spacers specially provided at this end or by the aforesaid bond. In this case, lateral displacements of the matrix are likely to occur, which displacements are prejudicial to a satisfactory functioning of the arrangement. This is another drawback of the arrangement of the known art.
  • the object of the present invention is to overcome these drawbacks in particular.
  • the present invention concerns:
  • a gas-discharge display panel comprising a matrix, pierced with one or several holes, on either side of said matrix two networks of linear conductors transversely disposed to each other so that a plan view of the two said networks and of said matrix exhibit intersection points located inside said hole (or holes), said matrix and networks being enclosed between two thick slabs at least one of which is transparent and projecting beyond said matrix, a peripheral bond ensuring vacum tight sealing between said slabs, said bond surrounding said matrix, and a gas enclosed in the space bounded within said bond between the two slabs, one of the slabs carrying a pumping pipe communicating with said space, characterized in that the space extending sake of clarity, the relative sizes, and specially the thicknesses, of the elements, have been disregarded.
  • the panel of FIGS. la and 1b is made up of a plate, for example of insulating material, or matrix] whose thickness ranges between 0.1 and 2mm and which isperforated by a network of cylindrical holes 2, referred to as cells.
  • two thin insulating sheets 3 Sealed to the matrix at either side of it, there are provided two thin insulating sheets 3, for example of glass, whose general thickness is far less than that of the matrix.
  • This arrangement is disposed between two insulating slabs 4, at least one of which, the one located at the side facing the observer made of glass for example, is transparent and has sufficient thickness to provide adequate rigidity, for example, a thickness of several mm.
  • the arrangement of the assembly is such that these networks cross over the cylindrical cells.
  • These conductive electrodes are sufficiently transparent or narrow for the light emitted by the discharge to be visible externally of the panel.
  • the slabs 4 are kept apart from the thin insulating sheets 3. In this figure, the spacing between the slabs 4 and the insulating sheets 3, due to its smallness, in the order of tens of micrometers, has been enlarged for clarity.
  • This bond is produced by an enamel 7, a cement or some other material, deposited between the slabs either directly between the two, or, as the example in the Figure indicates, through the intermediary of a ring 8 surrounding the matrix.
  • the bond 6 serves as spacer between the two slabs 4.
  • An orifice 9 formed in one of the slabs establishes communication with a pipe 10 which is used for pumping and, for introducing the tiller gas.
  • the pipe is then sealed.
  • a filter 12 for example for glass-wool, located in the pipe, prevents the ing.
  • the particles of which is made the mineral powder 11, or the glass balls, are chosen of a size larger than the spacing above referred to every time that such a spacing exists.
  • FIGS. 2, 3 and 4 illustrate three other embodiments of the invention in which figures:
  • FIG. 2 the thin insulating foils 3 have been replaced by insulating films 13, for example of a transparent enable deposited upon the slabs and upon the electrode networks, and bearing against the matrix 1.
  • FIG. 3 the matrix 1 of FIG. 1 is replaced by a frame 14, of metal for instance, located inside the bond balls from displacing during pump- FIG. 4: There are combined the two foregoing ar-' prised between the matrix and the bond 6 is filled with mineral powder 11.
  • the invention likewise 7 comprises variant embodiments in which the thin sheets 3 or insulating films 13 are discarded, something which would in particular be possible in'the caseof a matrix made of insulating material.
  • a gas-discharge display panel comprising a matrix having a plurality of holes therein, on either side of said matrix two networks of parallelly spaced linear conductors oriented orthogonally to each other, their crossover points defining coordinate intersections in registry with said holes, two insulating elements each of.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Gas-Filled Discharge Tubes (AREA)
US107688A 1970-01-30 1971-01-19 A gas discharge display panel with mineral powder between apertured matrix and envelope seal Expired - Lifetime US3706899A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7003281A FR2076848A5 (enrdf_load_stackoverflow) 1970-01-30 1970-01-30

Publications (1)

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US3706899A true US3706899A (en) 1972-12-19

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US107688A Expired - Lifetime US3706899A (en) 1970-01-30 1971-01-19 A gas discharge display panel with mineral powder between apertured matrix and envelope seal

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US (1) US3706899A (enrdf_load_stackoverflow)
DE (1) DE2104103A1 (enrdf_load_stackoverflow)
FR (1) FR2076848A5 (enrdf_load_stackoverflow)
GB (1) GB1336618A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050067956A1 (en) * 2003-09-25 2005-03-31 Doo-Young Kim Plasma display panel assembly
US20060161118A1 (en) * 2004-05-28 2006-07-20 Cathlogic, Inc. Dysfunction resistant catheter system and associated methods

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2258756A (en) * 1991-08-02 1993-02-17 Eric James Sjoberg Sealing and making connection to electron tube devices.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1851532A (en) * 1930-07-22 1932-03-29 Richard E Vollrath Luminous electrical discharge device
US2772496A (en) * 1952-09-13 1956-12-04 Harold A Meyrick Illuminated sign structure
US3499167A (en) * 1967-11-24 1970-03-03 Owens Illinois Inc Gas discharge display memory device and method of operating
US3573531A (en) * 1968-03-18 1971-04-06 Sylvania Electric Prod Plasma panel display device
US3611019A (en) * 1968-12-19 1971-10-05 Ibm Gas panel apparatus and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1851532A (en) * 1930-07-22 1932-03-29 Richard E Vollrath Luminous electrical discharge device
US2772496A (en) * 1952-09-13 1956-12-04 Harold A Meyrick Illuminated sign structure
US3499167A (en) * 1967-11-24 1970-03-03 Owens Illinois Inc Gas discharge display memory device and method of operating
US3573531A (en) * 1968-03-18 1971-04-06 Sylvania Electric Prod Plasma panel display device
US3611019A (en) * 1968-12-19 1971-10-05 Ibm Gas panel apparatus and method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050067956A1 (en) * 2003-09-25 2005-03-31 Doo-Young Kim Plasma display panel assembly
US7550921B2 (en) * 2003-09-25 2009-06-23 Samsung Sdi Co., Ltd. Plasma display panel assembly
US20060161118A1 (en) * 2004-05-28 2006-07-20 Cathlogic, Inc. Dysfunction resistant catheter system and associated methods

Also Published As

Publication number Publication date
DE2104103A1 (enrdf_load_stackoverflow) 1971-08-05
GB1336618A (en) 1973-11-07
FR2076848A5 (enrdf_load_stackoverflow) 1971-10-15

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