EP0738420B1 - PROCEDE et installation d'ASSEMBLAGE D'UN ECRAN PLAT DE VISUALISATION - Google Patents

PROCEDE et installation d'ASSEMBLAGE D'UN ECRAN PLAT DE VISUALISATION Download PDF

Info

Publication number
EP0738420B1
EP0738420B1 EP95901474A EP95901474A EP0738420B1 EP 0738420 B1 EP0738420 B1 EP 0738420B1 EP 95901474 A EP95901474 A EP 95901474A EP 95901474 A EP95901474 A EP 95901474A EP 0738420 B1 EP0738420 B1 EP 0738420B1
Authority
EP
European Patent Office
Prior art keywords
plates
plate
anode
cathode
screen
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
EP95901474A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0738420A1 (fr
Inventor
Richard Le Prieuré No.2-Bâtiment G PEPI
Michel Garcia
Jean-Frédéric Clerc
Olivier Hamon
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.)
Pixel International SA
Original Assignee
Pixel International SA
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 Pixel International SA filed Critical Pixel International SA
Publication of EP0738420A1 publication Critical patent/EP0738420A1/fr
Application granted granted Critical
Publication of EP0738420B1 publication Critical patent/EP0738420B1/fr
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
    • 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
    • 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
    • H01J9/46—Machines having sequentially arranged operating stations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2209/00—Apparatus and processes for manufacture of discharge tubes
    • H01J2209/38—Control of maintenance of pressure in the vessel
    • H01J2209/389—Degassing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2329/00—Electron emission display panels, e.g. field emission display panels

Definitions

  • the present invention relates to a flat display screen. It applies more particularly to the assembly of the two plates respectively constituting the bottom and the surface of the screen, and between which is formed an internal space isolated from the outside.
  • a flat screen consists of two generally rectangular external plates, for example made of glass. One plate constitutes the surface of the screen while the other constitutes the bottom of the screen generally provided with emission means. These two plates are assembled by means of a sealing joint, being spaced from each other.
  • FED field effect screen
  • VFD fluorescent vacuum display
  • a vacuum is created in the space separating the two glass plates, while for a plasma screen, this space is filled with low pressure gas.
  • Figure 1 shows schematically and in section the conventional structure of a portion of a microtip screen and Figure 2 illustrates schematically and in section a conventional method of assembling a microtip screen.
  • Such a microtip screen essentially consists of a cathode plate 1 placed opposite an anode plate 2.
  • the cathode plate 1 consists, on a glass substrate 3, of cathode conductors 4 organized in columns. These cathode conductors 4 are generally coated with a resistive layer (not shown) for homogenizing the electronic emission.
  • the cathode is associated with a grid 5 with the interposition of an insulating layer 6 to isolate the cathode conductors 4 from the grid 5. Holes are respectively made in the grid 5 and insulation 6 layers to receive microtips 7 which are formed on the resistive layer.
  • the grid 5 is organized in rows, the intersection of a row of the grid 5 and a column of the cathode defining a pixel. For reasons of clarity, only a few microtips 7 have been shown in FIG. 1. In practice, these microtips 7 are several thousand per screen pixel.
  • the anode plate 2 is provided with phosphor elements 8 deposited on electrodes 9, consisting of a transparent conductive layer such as indium tin oxide (ITO) and formed on a substrate 10.
  • ITO indium tin oxide
  • This device uses the electric field created between the cathode 3 and the grid 5 so that electrons are extracted from the microtips 7 towards phosphor elements 8 suitably polarized from the anode plate 2 by crossing an empty space 11.
  • the cathode / grid and the anode are produced separately on the two substrates 3 and 10 to form the cathode 1 and anode 2 plates, then these plates are assembled by means of a peripheral sealing joint 12 (FIG. 2) .
  • a empty space 11 is provided between the two plates 1 and 2 to allow the circulation of electrons from the cathode to the anode
  • the cathode plate / grid 1 is then subjected to a heat treatment under vacuum having the object of causing degassing of the cathode and evaporation of the glue from the spacers.
  • This heat treatment is carried out under a pressure of the order of 10 -8 Pa, at a temperature of approximately 450 ° C. for approximately one hour.
  • a similar treatment is applied to the anode plate 2, but here in an oxygen-rich atmosphere.
  • the purpose of this treatment is to cause evaporation of the residual organic components remaining in the phosphor elements 8 on the anode after having served as promoters used in the various methods of depositing the phosphors or constituting contaminants resulting from the subsequent treatment steps.
  • a pumping tube 13 is then placed on the free face of the cathode plate 1.
  • This tube is for example made of glass and is sealed by one of its open ends in line with a hole made in the plate 1 to establish a communication with the space 11.
  • This tube 13 will be used in particular subsequently to connect a pipe 14 intended to create a vacuum in the space 11.
  • the tube 13 is placed in a corner of the plate 1 outside of its useful surface.
  • a sealing joint 12 is deposited, for example a bead of fusible glass.
  • the two plates 1 and 2 are then assembled by pressing them one against the other and by subjecting the assembly to a temperature allowing the softening of the cord 12. This temperature is for example 450 ° C.
  • This sealing is carried out under vacuum at a pressure of the order of 10 -8 Pa and lasts for approximately one hour.
  • the structure obtained is subjected, via the tube 13 and the pipe 14 to a hot pumping which has the role of causing a degassing of the space 11.
  • This step is carried out under a temperature of the order of 360 ° C and lasts about fifteen hours. This degassing is necessary due to the gases generated during the heat sealing of the plates 1 and 2.
  • the anode 2 is then debugged by exciting the microtips 7 of the cathode 1 and by pumping the gases emitted by the phosphor elements 8 of the anode by means of the tube 13. This debugging lasts approximately twenty hours.
  • the tube 13 is then closed at its free end after having introduced therein an element for trapping impurities, or degasser, commonly called a getter (not shown).
  • a getter (not shown).
  • the role of this getter is to absorb the pollution likely to appear during the subsequent operation of the screen.
  • the pollution which the getter must absorb is essentially linked to the degassing of the fusible glass bead 12, and to the pollution of the microtips 7 of the cathode 1 during the debugging of the anode 2 which leads to a residual degassing which continues even after closure of tube 13.
  • a drawback of this process is that the thermal and degassing treatments which the screen undergoes do not make it possible to remove all the contaminating elements.
  • the layers of the screen will thus continue to degas during the operation of the screen.
  • the grains of the phosphor elements 8 of the anode 2 contain on the surface organic elements (in particular carbonates) which are not eliminated during the heat treatment process of the anode in an oxygen-rich atmosphere.
  • the gases naturally occurring organic substances in the air e.g. carbon dioxide CO 2 , methane CH 4 , and carbon monoxide CO
  • the contamination of the microtips 7 of the cathode 1 is essentially caused by the fact that the organic elements of the anode 2 which are not removed by the heat treatment, are on the other hand ionized by the electronic bombardment carried out during the burn-in step.
  • the free carbons and carbonates are not removed by hot pumping by means of the tube 13 (steaming under vacuum).
  • the invention aims to overcome these drawbacks by proposing a method of assembling a flat display screen which makes it possible to remove contaminants, in particular organic contaminants, and thus to increase the lifetime of the screen.
  • the invention also relates to an assembly method which makes it possible to avoid the use of a pumping tube and thus reduces the overall size of the screen.
  • each plate is separately subjected to a degassing heat treatment before the plates are assembled together, the first plate being subjected to burn-in after its heat treatment.
  • the plates respectively support the cathode / grid assembly and the anode of a microtip screen.
  • the debugging of the anode is carried out by means of a source of electronic bombardment distinct from the cathode to which it must be permanently assembled.
  • the electronic bombardment source consists of an electron gun.
  • the electron bombardment source consists of a cathode dedicated to electronic emission microdots, placed at a distance from the anode substantially greater than the distance which separates the anode from the cathode. of an assembled screen, the anode-cathode voltage applied during the burn-in step being substantially greater than that of operation of the screen.
  • the sealing joint consists of two foils fixed on the internal faces of the plates having an overhang over the entire periphery of the plates, the overhang constituting a zone for welding the foils together after pressing the plates against each other, each foil being welded to one of the plates before the thermal degassing stage of the plates.
  • each foil is brazed onto a plate after depositing a metal layer on the internal periphery of the plate.
  • the sealing joint consists of a rigid frame interposed between the two plates and coated on its faces opposite the plates, with a layer of metal fusible at low temperature, the sealing being carried out by an inductive heating fusing the layer of fusible metal with the material of the plates.
  • the sealing joint consists of a frame of ductile metal interposed between the plates.
  • the sealing joint consists of a rigid frame, of dimension somewhat smaller than the dimension of the plates and interposed between the plates, and of a layer of vacuum grease housed in the volume delimited by the free face of the frame and the overhangs of the plates relative to the frame.
  • the vacuum grease layer is isolated from the outside of the screen by means of a sealing gel.
  • means intended to prevent the sliding of the plates on the sealing joint are arranged around the plates.
  • an electrically insulating layer is interposed between the sealing joint and each of the plates.
  • the thickness of the sealing joint is chosen to correspond, after sealing, to the thickness of the space between plates defined by spacers distributed over at least one of the plates.
  • An essential characteristic of the method according to the invention is to authorize a burn-in of the anode by means of a source of electronic bombardment distinct from the cathode which will be definitively associated with it, while avoiding re-venting of the anode. between its debugging and its assembly with a cathode.
  • FIG. 3 schematically illustrates an embodiment of the method according to the invention. This figure shows the structure of the equipment that can be used for the treatments to be applied to an anode plate until it is assembled with a cathode plate.
  • an anode plate 2 is introduced into an entry airlock 21 of a tunnel oven 22.
  • this introduction is carried out, preferably by progressive vacuuming by means of several airlocks.
  • the plate 2 is placed under a high vacuum of the order of 10 -8 Pa.
  • the plate 2 is then conveyed by means of an appropriate conveyor 23 to a first heat treatment station 24 of the tunnel oven 22 Within this tunnel furnace 22, it is conveyed from station to station for a gradual rise in temperature up to approximately 450 ° C., then is lowered still progressively to a temperature of 100 to 200 ° C. in the last station. of the oven 22.
  • the use of a tunnel oven 22 allows a chain processing of several anode plates 2 which pass successively from one station to another.
  • the anode plate 2 After having undergone the heat treatment under vacuum or under oxygen plasma to remove part of the organic pollutants from the phosphor elements, the anode plate 2 is transferred to an electronic bombardment station 25. This transfer takes place under vacuum or under inert atmosphere to prevent organic compounds naturally present in the air from polluting phosphors.
  • a characteristic of electronic bombardment which leads to a release of free carbons or other organic pollutants resides in the fact that it is no longer carried out by means of the microtip cathode assembled at the anode, but by means of a source. independent (not shown). It could for example be a dedicated microtip cathode, specifically intended to fulfill this function, or a conventional electronically scanned bombardment gun.
  • An advantage of such electronic bombardment is that it allows optimum efficiency of the anode burn-in by allowing the anode to be placed at a significant distance (of the order of a few tens of centimeters) from the bombardment source.
  • the energy of the electrons emitted can be much greater, which allows a much faster burn-in (for example of the order of an hour) and significantly more effective.
  • the potential difference between the anode and the gun is of the order of 10 kV.
  • the distance between the anode and the electron bombardment source also makes it possible to better eliminate, by suction, the compounds (free carbons or other) from the burn-in without causing excessive pollution on the bombardment source.
  • the plate 2 always passes under vacuum or under an inert atmosphere to a sealing station 26.
  • a cathode plate 1 / microtip grid having separately undergone the heat treatments under vacuum degassing and evaporation of the glue of the spacers is introduced into the sealing station 26.
  • the plate 1 is introduced into the sealing station 26, just like the plate 2, without having been returned to the air after its heat treatments.
  • the heat treatments undergone by the cathode / grid plate 1 can be carried out in a tunnel oven (not shown) similar to the tunnel oven 22 for treating the anode 2.
  • the sealing station 26 can be merged with the burn-in station 25.
  • the sealing station 26 is provided with a press (not shown).
  • the cathode / grid and anode plates 1 and 2 are each placed on the jaws of the press.
  • the assembly is carried out under vacuum so as not to pollute the anode after it has been burnished.
  • the conventional sealing method using a bead of fusible glass requires a heat treatment which results in degassing of the fusible glass polluting the anode
  • the invention provides a new method of cold sealing the two plates 1 and 2 between them .
  • FIGS. 4 to 6 Different embodiments of the sealing of the plates 1 and 2 are illustrated in FIGS. 4 to 6. For reasons of clarity, the details constituting the cathode / grid 1 and anode 2 assembly have been represented in these figures only symbolically under form of layers 31 and 32.
  • FIG. 4 illustrates a first embodiment of the seal for sealing the plates 1 and 2 respectively of the anode and the cathode.
  • This sealing is carried out by means of a rigid peripheral frame 41.
  • This frame 41 is for example metallic and is coated on its two faces intended to be in contact with the plates 1 and 2, with layers 42, 43 of low-fuse metal. temperature.
  • the thickness of the rigid frame (for example 0.2 mm) corresponds substantially to the height of the spacers (not shown) distributed over the grid.
  • the thickness of the layers 42, 43 is for example of the order of 2 to 5 ⁇ m.
  • insulating layers are interposed between the frame 41 and the plates 1 and 2. These layers serve to insulate the electrical connection tracks of the conductors 4, 5 and 9, respectively of cathode, grid and anode, frame 41.
  • the insulation layers are placed at least on the sides of the screen which have connection tracks.
  • the insulation layers are for example made of silicon oxide (SiO 2 ) deposited chemically in the vapor phase.
  • the assembled screen is returned to the atmosphere.
  • This return to the atmosphere is preferably carried out gradually by means of several airlocks in order not to pollute the vacuum of the sealing station 26.
  • FIG. 5 illustrates a second embodiment of the sealing joint according to the invention.
  • Two peripheral foils 51, 52 for example made of stainless steel, are respectively fixed on the internal faces of the plates 1 and 2, prior to their introduction for degassing in the vacuum enclosure.
  • the foils 51, 52 are sealed to the plates 1 and 2 for example by glass-metal welding or by brazing on a metal deposit (not shown) previously carried out on the periphery of the plates 1 and 2.
  • the foils 51 and 52 are sealed so as to have an overhang over the entire periphery of the plates 1 and 2.
  • each foil 51 or 52 corresponds to half the desired distance between the plates 1 and 2 of the screen and defined by the spacers distributed on the grid 5
  • the compounds liable to constitute possible pollutants for the anode 2 or the cathode 1 are eliminated during the heat treatment stages which the plates 1 and 2 undergo, under vacuum or under oxygen plasma.
  • the parts of the foils 51 and 52 projecting from the surface of the plates 1 and 2 are welded 53 to one another, for example by fusion by means of a laser.
  • the foils are thus sealed at the periphery and the inter-electrode space 11 is isolated from the outside.
  • the resetting of the screen can be carried out as has been explained in relation to FIG. 4.
  • FIG. 6 illustrates a third embodiment of the sealing joint according to the invention.
  • a frame 61 made of a rigid material which does not degass under vacuum is interposed between the plates 1 and 2 set back from their periphery.
  • This frame 61 is for example made of foil of stainless steel or glass.
  • the frame 61 is put in place before pressing the plates 1 and 2 one on the other.
  • vacuum grease 62 is deposited in the volume delimited by the free face of the frame 61 and the overhangs of the plates 1 and 2 relative to the frame 61.
  • This vacuum grease 62 is chosen to be sufficiently fluid to avoid any possible micro-leakage in line with the frame 61.
  • the vacuum grease 62 is more preferably chosen to be compatible with the vacuum and to be stable in contact with air. In the case where the vacuum grease is not stable in contact with air, the application of a sealing gel 63, consisting for example of a silicone-based adhesive, will allow the grease to be isolated. air vacuum 62.
  • an insulation layer 64 is interposed between the frame 61 and the areas of the plates 1 and 2 with which it is in contact.
  • the role of this insulation layer is always to electrically isolate the frame 61 from the electrical connection tracks of the conductors 4, 5 and 9, respectively of the cathode, grid and anode.
  • Restoring the screen to the atmosphere, which takes place as indicated in relation to FIG. 4, ensures here that the plates 1 and 2 are held by pressure difference.
  • the relative pressure difference between the empty inter-electrode space of the screen and the outside of the screen keeps the plates 1 and 2 pressed against the frame 61, thus ensuring the seal between the space between electrodes 11 and outside.
  • a fourth embodiment (not shown) of the sealing joint according to the invention consists of a peripheral joint made of a ductile metal, such as annealed copper or silver. This seal is interposed between the plates 1 and 2 and is then crushed by means of the press constituting the sealing station 26. Preferably, insulation layers are interposed between the seal and the plates to isolate the electrical connection tracks from the cathode, grid and anode conductors, sealing joint.
  • the assembled screen is returned to the atmosphere in the manner exposed in relation to FIG. 4.
  • the relative pressure difference between the space vacuum between electrodes of the screen and the outside of the screen, keeps the seal crushed, which ensures the seal between the space between electrodes and the outside.
  • the implementation of the invention makes it possible to considerably lengthen the life of the screens by eliminating practically any degassing of the anode during the operation of the screen. It also makes it possible to increase the brightness of the screen by eliminating any pollution of the cathode by organic compounds, the latter having been eliminated prior to the assembly of the plates.
  • the method according to the invention eliminates the need for a pumping tube to create a vacuum and allow degassing of the inter-electrode space, which makes it possible to considerably reduce the overall size of the screen. Eliminating the risk of subsequent degassing also makes it possible, if desired, to eliminate the need for a getter.
  • the assembly method according to the invention is much faster than conventional methods. This in particular thanks to the step of debugging of the anode which is carried out before assembly, by means of a dedicated bombardment source.
  • microtip screen any type of flat screen for which it is necessary to degas and comprising an empty internal space or filled with a gas at low pressure.
  • the choice between a transfer under vacuum or under an inert atmosphere of the plates between the different stations of the installation depends on its equipment, provided that the non-return to air of the plates between the different stations is respected. If, for example, a manual transfer or handling of the plates must be carried out, it is preferable to use a transfer under an inert atmosphere to allow handling in a glove box.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
EP95901474A 1994-11-09 1994-11-09 PROCEDE et installation d'ASSEMBLAGE D'UN ECRAN PLAT DE VISUALISATION Expired - Lifetime EP0738420B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FR1994/001314 WO1996015542A1 (fr) 1994-11-09 1994-11-09 Procede d'assemblage d'un ecran plat de visualisation

Publications (2)

Publication Number Publication Date
EP0738420A1 EP0738420A1 (fr) 1996-10-23
EP0738420B1 true EP0738420B1 (fr) 1997-12-17

Family

ID=9459823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95901474A Expired - Lifetime EP0738420B1 (fr) 1994-11-09 1994-11-09 PROCEDE et installation d'ASSEMBLAGE D'UN ECRAN PLAT DE VISUALISATION

Country Status (5)

Country Link
US (1) US5876260A (ja)
EP (1) EP0738420B1 (ja)
JP (1) JPH09511613A (ja)
DE (1) DE69407433T2 (ja)
WO (1) WO1996015542A1 (ja)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6129603A (en) * 1997-06-24 2000-10-10 Candescent Technologies Corporation Low temperature glass frit sealing for thin computer displays
EP1019941B1 (en) * 1997-10-01 2008-09-03 Complete Multilayer Solutions Limited Visual display
JP2000315458A (ja) * 1999-04-28 2000-11-14 Toshiba Corp 平面型画像表示装置の製造方法、および平面型画像表示装置の製造装置
JP3440906B2 (ja) * 2000-01-07 2003-08-25 日本電気株式会社 プラズマディスプレイパネルの製造装置とその製造方法
US6692323B1 (en) * 2000-01-14 2004-02-17 Micron Technology, Inc. Structure and method to enhance field emission in field emitter device
JP3754859B2 (ja) 2000-02-16 2006-03-15 キヤノン株式会社 画像表示装置の製造法
JP3754883B2 (ja) * 2000-03-23 2006-03-15 キヤノン株式会社 画像表示装置の製造法
AU2001276946A1 (en) * 2000-09-05 2002-03-22 Motorola, Inc. Method of manufacturing a field emission device
JP3634805B2 (ja) * 2001-02-27 2005-03-30 キヤノン株式会社 画像形成装置の製造方法
JP4574081B2 (ja) * 2001-08-09 2010-11-04 キヤノン株式会社 画像表示装置の製造方法
US6614168B2 (en) * 2002-01-11 2003-09-02 Industrial Technology Research Institute Package method for field emission display
JP2004146211A (ja) * 2002-10-24 2004-05-20 Noritake Co Ltd 平板型表示装置およびその封着方法
JP5068924B2 (ja) 2004-02-20 2012-11-07 中外炉工業株式会社 ガラスパネル組立体の連続封着処理炉および封着処理方法
CN100459214C (zh) * 2005-12-07 2009-02-04 陕西科技大学 一种带有消气剂的有机电致发光显示器件
CN104370473B (zh) * 2013-08-12 2016-12-28 洛阳兰迪玻璃机器股份有限公司 玻璃板轰击除气装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4018490A (en) * 1975-07-07 1977-04-19 International Business Machines Corporation Gas discharge display panel fabrication
JPS5549136A (en) * 1978-10-05 1980-04-09 Shigeru Obiyama Continuous working apparatus during pressure reduction
JPS6171533A (ja) * 1984-09-12 1986-04-12 Futaba Corp 表示管の製造方法
JP2727224B2 (ja) * 1989-05-15 1998-03-11 キヤノン株式会社 画像表示装置の製造方法
US5207607A (en) * 1990-04-11 1993-05-04 Mitsubishi Denki Kabushiki Kaisha Plasma display panel and a process for producing the same
JPH06196094A (ja) * 1992-12-22 1994-07-15 Noritake Co Ltd 真空表示装置の製造方法

Also Published As

Publication number Publication date
JPH09511613A (ja) 1997-11-18
US5876260A (en) 1999-03-02
DE69407433T2 (de) 1998-06-04
EP0738420A1 (fr) 1996-10-23
DE69407433D1 (de) 1998-01-29
WO1996015542A1 (fr) 1996-05-23

Similar Documents

Publication Publication Date Title
EP0738420B1 (fr) PROCEDE et installation d'ASSEMBLAGE D'UN ECRAN PLAT DE VISUALISATION
JP4323573B2 (ja) フラット・パネル表示装置の製造方法
FR2739490A1 (fr) Procede de mise sous vide et d'etancheification de modules notamment d'affichage par emission de champ, et modules obtenus
CH629420A5 (fr) Procede de fabrication d'une enveloppe comprenant au moins une paroi vitreuse et enveloppe obtenue suivant ce procede.
JP2000082401A (ja) プラズマディスプレイパネルの製造方法
EP0895268A1 (fr) Procédé d'assemblage sous vide d'un écran plat de visualisation
FR2530851A1 (fr) Appareil de visualisation plan pour televiseurs et terminaux
FR2736464A1 (fr) Dispositif de visualisation a emission de champ
FR2705163A1 (fr) Procédé de mise en vide et de scellement d'écrans plats de visualisation.
EP0893817B1 (fr) Pompage ionique d'un écran plat à micropointes
JPH05234512A (ja) ガス放電表示パネルの製造方法
US20060250565A1 (en) Image display device and method of manufacturing the same
FR2727568A1 (fr) Assemblage d'un ecran plat de visualisation
EP0802559B1 (fr) Ecran plat de visualisation à source d'hydrogène
FR2776824A1 (fr) Enveloppe a vide et procede pour mettre sous vide celle-ci
WO2004060826A1 (fr) Materiau de jonction entre des espaceurs et un substrat verrier
JP2002319346A (ja) 表示装置およびその製造方法
US7152433B2 (en) Method of manufacturing image display apparatus and apparatus for manufacturing the same
EP1173877B1 (fr) Dispositif a emission de champ utilisant un gaz reducteur et fabrication d'un tel dispositif
FR2755295A1 (fr) Procede de fabrication d'un dispositif a emission de champ sous vide et appareils pour la mise en oeuvre de ce procede
FR2765391A1 (fr) Dispositif d'affichage a cathodes a emission de champ
EP2335267A1 (fr) Tube électronique à cathode froide, son procédé de fabrication et son utilisation pour écran d'affichage
KR100603271B1 (ko) 플라즈마 디스플레이 패널의 플라즈마 방전가스 주입방법
JP5311961B2 (ja) 外囲器、画像表示装置及び映像受信表示装置の製造方法
JP2005116299A (ja) プラズマディスプレイパネルの製造方法、プラズマ表示装置及びその製造方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19960705

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HAMON,OLIVIER

Inventor name: CLERC, JEAN-FREDERIC

Inventor name: GARCIA, MICHEL

Inventor name: PEPI,RICHARD, LE PRIEURE NO.2-BATIMENT G

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19970226

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REF Corresponds to:

Ref document number: 69407433

Country of ref document: DE

Date of ref document: 19980129

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19980112

ITF It: translation for a ep patent filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: FR

Ref legal event code: GC

Ref country code: FR

Ref legal event code: CD

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20030528

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030602

Year of fee payment: 9

GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: GB

Ref legal event code: 728V

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20031001

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20031109

REG Reference to a national code

Ref country code: GB

Ref legal event code: 728Y

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040602

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20031109

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040730

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051109