EP1073088A1 - Herstellung einer Anode eines flachen Bildschirms, nach diesem Verfahren hergestellte Anode und Verwendung dieser Anode für einen flachen Schirm - Google Patents

Herstellung einer Anode eines flachen Bildschirms, nach diesem Verfahren hergestellte Anode und Verwendung dieser Anode für einen flachen Schirm Download PDF

Info

Publication number
EP1073088A1
EP1073088A1 EP00402127A EP00402127A EP1073088A1 EP 1073088 A1 EP1073088 A1 EP 1073088A1 EP 00402127 A EP00402127 A EP 00402127A EP 00402127 A EP00402127 A EP 00402127A EP 1073088 A1 EP1073088 A1 EP 1073088A1
Authority
EP
European Patent Office
Prior art keywords
anode
conductive
resistors
strips
bands
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.)
Withdrawn
Application number
EP00402127A
Other languages
English (en)
French (fr)
Inventor
Aimé Périn
Brigitte Montmayeul
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP1073088A1 publication Critical patent/EP1073088A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/08—Electrodes intimately associated with a screen on or from which an image or pattern is formed, picked-up, converted or stored, e.g. backing-plates for storage tubes or collecting secondary electrons
    • H01J29/085—Anode plates, e.g. for screens of flat panel displays
    • 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
    • H01J9/20—Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel

Definitions

  • the present invention relates to a method manufacturing an anode of a flat screen display as well as an anode obtained by this process and a flat screen using this anode.
  • the invention relates in particular to manufacture of an anode of a flat screen microtip display ("microtips").
  • the invention applies in particular to the manufacture of anodes for flat display screens in colors.
  • Figure 1 is a schematic view and partial of a known flat screen structure with microtips with which one can implement the invention.
  • Such a microtip screen includes essentially a microtip cathode 2 and a cathodoluminescent anode 4 which is placed opposite this cathode.
  • the cathodoluminescent anode 4 comprises a transparent substrate 6, generally made of glass, which lets in the light produced by cathodoluminescence and through which we observe the screen.
  • the cathode 2 includes a set of parallel conductors 8 forming the columns of this cathode. Only one of these conductors is shown in Figure 1. These conductors 8 are formed on a substrate electrically insulating 10 generally made of glass.
  • This set of conductors 8 is covered an electrically insulating layer 12 on which the grid 14 of the cathode is formed.
  • This grid is a set of parallel lines 16. A single line is shown in Figure 1. Lines 16 are orthogonal to columns 8.
  • Holes 18 are formed through the insulating layer 12 and the grid 14 to the columns 8.
  • the microtips 20 are formed in these holes 18.
  • the screen schematically represented on the Figure 1 uses the electric field created between the conductors 8 and grid 14 so that the electrons are extracted from microtips 20 and reach the phosphor elements of the anode.
  • the anode 4 is provided with strips of phosphor elements 22R, 22B and 22V which alternate with each other and correspond respectively to the three colors red, blue and green.
  • These bands of phosphor elements are respectively deposited on electrically tapes conductors 24R, 24B and 24V which are formed on the substrate 6, parallel to columns 8, from an electrically conductive and transparent layer for example indium oxide doped with tin.
  • Figure 2 is a schematic view and partial view of another known flat screen structure with microtips with which one can implement the invention.
  • Electric arcs can also produce, in the case of figure 1, between two bands neighboring phosphor elements due to the potential difference between these two bands.
  • the conductive strips of the anode are connected to one or more interconnection conductors through electrical resistors.
  • bands 24R, 24B and 24V are respectively connected to three conductors 28R, 28B and 28V interconnection via electrical resistors 30R, 30B and 30V.
  • the object of the present invention is to remedy this drawback.
  • the present invention proposes to form resistors and bands conductive on which the elements are formed phosphors during the same stage of a process manufacture of the anode of a flat screen visualization.
  • the present invention has relates to a method for manufacturing an anode of a flat display screen, in particular a screen microtip, process in which one forms, on a electrically insulating substrate, at least one set of electrically conductive strips carrying bands of phosphor elements and respectively minus one interconnected electrical conductor to the conductive strips through electrical resistance, this process being characterized by what, to form the conductive strips and the resistors, an electrically formed layer is formed conductive on the substrate and these bands are formed conductive and these resistors from this conductive layer.
  • the bands can be distributed conductive in groups and form resistance by group of conductive strips.
  • Resistors can have a form corrugated to reduce the size of the substrate the anode.
  • an anode substrate and a layer are used conductive which are transparent so as to leave pass the light produced by the elements phosphors.
  • This conductive layer is for example in indium oxide doped with tin or ITO.
  • the formation of conductive strips and resistors can include photolithography and an etching of the conductive layer.
  • the present invention also relates to a anode of a flat display screen comprising, on an electrically insulating substrate, at least one set of electrically conductive strips carrying bands of phosphor elements and respectively minus one interconnected electrical conductor to the conductive strips through electrical resistance, this anode being characterized in that the resistors are formed on the substrate, from the same electrically conductive material as the conductive strips.
  • the electrically conductive material is for example indium oxide doped with tin.
  • the invention also relates to a screen display plate including anode cathodoluminescent object of the invention, placed in gaze of a cathode capable of emitting electrons by field effect.
  • the screens of Figures 1 and 2 use, for their anode, strips transparent conductors. These conductive strips are for example made of indium oxide doped with tin.
  • Figure 4 is an exemplary embodiment an anode A1 according to the invention, for a screen like the one shown on the figure 1.
  • This area constitutes the useful surface of the screen.
  • interconnection conductors 32R, 32B and 32V are for example made of indium oxide doped with tin, which allows them to be made at the same time that the conductive strips and the resistors, or another conductive material, for example from aluminum.
  • Each conductive strip is connected to one of the interconnection conductors and includes, in its end closest to this conductor, a resistance which is therefore in ITO.
  • the bands 34R, 34B and 34V are respectively connected to conductors 32R, 32B and 32V and the corresponding resistors are respectively referenced 36R, 36B and 36V.
  • resistors 36R and 36V are respectively in contact with the conductors 32R and 32V interconnection while the ends respective resistors 36B form pads 38.
  • Each pad 38 is subsequently connected to interconnection conductor 32B by a technique of classic interconnection, for example the technique called "bonding".
  • the sets of bands 34R, 34B and 34V are alternately polarized and their voltage alternately applied is less than 1 kV. She is for example 500 V.
  • resistors have a value such that the current in the conductive strips 34R, 34B and 34V either limited to a few milliamps an electric arc will not be able to start. For example with tension anode of 500 V and resistances of 500 k ⁇ maximum current is limited to 1 mA, which prevents the formation of electric arcs.
  • the current per pixel being of the order of 20 ⁇ A an indium oxide doped with tin is used, the resistance per square is 500 ⁇ .
  • Each of resistors 36R, 36B and 36V of 500 k ⁇ then form by example a 20 ⁇ m wide and 20 mm long strip.
  • This strip can be straight but has preferably a wavy shape, as seen on the Figure 4, to less clutter the substrate 6 of the anode.
  • Figure 5 is another example of manufacture of an anode A2 in accordance with the invention, for a screen like the one shown on Figure 2.
  • Such resistances can for example each be formed of a straight strip or preferably wavy, in ITO of square resistance 1000 ⁇ , 20 ⁇ m wide and 60 mm long.
  • the invention does not only apply to microtip screens. It also applies to the manufacture of all emission screens field including carbon emission screens or microcrack screens.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
EP00402127A 1999-07-27 2000-07-25 Herstellung einer Anode eines flachen Bildschirms, nach diesem Verfahren hergestellte Anode und Verwendung dieser Anode für einen flachen Schirm Withdrawn EP1073088A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9909722 1999-07-27
FR9909722A FR2797092B1 (fr) 1999-07-27 1999-07-27 Procede de fabrication d'une anode d'un ecran plat de visualisation

Publications (1)

Publication Number Publication Date
EP1073088A1 true EP1073088A1 (de) 2001-01-31

Family

ID=9548560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00402127A Withdrawn EP1073088A1 (de) 1999-07-27 2000-07-25 Herstellung einer Anode eines flachen Bildschirms, nach diesem Verfahren hergestellte Anode und Verwendung dieser Anode für einen flachen Schirm

Country Status (2)

Country Link
EP (1) EP1073088A1 (de)
FR (1) FR2797092B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007005014A1 (en) * 2005-06-30 2007-01-11 Thomson Licensing Segmented conductive coating for a luminescent display device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0704877A1 (de) * 1994-09-28 1996-04-03 Pixtech S.A. Elektrischer Schutz von einer Anode eines flachen Bildschirms
EP0734042A1 (de) * 1995-03-22 1996-09-25 Pixtech S.A. Anode eines flachen Bildschirms mit Widerstandsstreifen
US5633120A (en) * 1995-05-22 1997-05-27 Texas Instruments Inc. Method for achieving anode stripe delineation from an interlevel dielectric etch in a field emission device
US5674407A (en) * 1995-07-03 1997-10-07 Texas Instruments Incorporated Method for selective etching of flat panel display anode plate conductors
US5785570A (en) * 1994-07-26 1998-07-28 Pixtech S.A. Anode for a flat display screen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5785570A (en) * 1994-07-26 1998-07-28 Pixtech S.A. Anode for a flat display screen
EP0704877A1 (de) * 1994-09-28 1996-04-03 Pixtech S.A. Elektrischer Schutz von einer Anode eines flachen Bildschirms
US5592056A (en) * 1994-09-28 1997-01-07 Pixtech S.A. Electrical protection of an anode of a flat display screen
EP0734042A1 (de) * 1995-03-22 1996-09-25 Pixtech S.A. Anode eines flachen Bildschirms mit Widerstandsstreifen
US5633120A (en) * 1995-05-22 1997-05-27 Texas Instruments Inc. Method for achieving anode stripe delineation from an interlevel dielectric etch in a field emission device
US5674407A (en) * 1995-07-03 1997-10-07 Texas Instruments Incorporated Method for selective etching of flat panel display anode plate conductors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007005014A1 (en) * 2005-06-30 2007-01-11 Thomson Licensing Segmented conductive coating for a luminescent display device
US8174177B2 (en) 2005-06-30 2012-05-08 Thomson Licensing Segmented conductive coating for a luminescent display device
CN101208766B (zh) * 2005-06-30 2012-06-20 汤姆森特许公司 用于发光显示装置的分段导电涂层

Also Published As

Publication number Publication date
FR2797092B1 (fr) 2001-09-14
FR2797092A1 (fr) 2001-02-02

Similar Documents

Publication Publication Date Title
EP0704877B1 (de) Elektrischer Schutz von einer Anode eines flachen Bildschirms
EP0558393B1 (de) Elektronenquelle mit Mikropunktkathoden und Anzeigevorrichtung mit Kathodolumineszenz erregt durch Feldemission unter Anwendung dieser Quelle
EP0734042B1 (de) Anode eines flachen Bildschirms mit Widerstandsstreifen
EP0867912A1 (de) Montieren von Abstandshältern in einer flachen Anzeigetafel
FR2807205A1 (fr) Plaque de cathode d'ecran plat de visualisation
EP0671755B1 (de) Elektronenquelle mit Mikrospitzenemissionskathoden
FR2714209A1 (fr) Dispositif d'affichage.
EP1073088A1 (de) Herstellung einer Anode eines flachen Bildschirms, nach diesem Verfahren hergestellte Anode und Verwendung dieser Anode für einen flachen Schirm
EP0734043B1 (de) Doppel-Gate-Flaches Bildschirm
EP1210721B1 (de) Flache feldemissionsanzeigevorrichtung mit modulationselektrode
EP0817232B1 (de) Verfahren zur Regenerierung von Mikrospitzen einer flachen Anzeigetafel
EP0649162B1 (de) Flaches Kaltkathodeanzeigegerät mit geschalteter Anode
FR2748347A1 (fr) Anode d'ecran plat de visualisation a anneau de protection
EP0877407A1 (de) Anode eines flachen Bildschirms
EP0844642A1 (de) Flaches Bildschirm mit fokussierenden Gittern
EP0867908A1 (de) Vergleichmässigung der potentiellen Elektronenemission einer Kathode eines flachen Mikrospitzen-Bildschirms
EP0905670A1 (de) Vereinfachung einer Mikrospitzen-Anzeige mit einer Rücksetzungselektrode
EP0806790B1 (de) Mikrospitzen-Farbbildschirm mit zwei Gittern
FR2790329A1 (fr) Anode resistive d'ecran plat de visualisation
FR2770338A1 (fr) Elimination de l'effet de moire d'un ecran plat de visualisation
EP1956625B1 (de) Struktur zum Aussenden von Elektronen durch Feldeffekt mit Fokussierung der Aussendung
WO2008074825A1 (fr) Structure de cathode pour ecran plat avec grille de refocalisation
FR2828956A1 (fr) Protection locale d'une grille d'ecran plat a micropointes
EP1091382A1 (de) Anode eines flachen Bildschirms
FR2798507A1 (fr) Dispositif permettant de produire un champ electrique module au niveau d'une electrode et son application aux ecrans plats a emission de champ

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

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB IT

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20010713

AKX Designation fees paid

Free format text: DE GB IT

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20040203