EP0010222B1 - Plaque de commande pour un écran plat à plasma de reproduction d'image - Google Patents

Plaque de commande pour un écran plat à plasma de reproduction d'image Download PDF

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Publication number
EP0010222B1
EP0010222B1 EP79103758A EP79103758A EP0010222B1 EP 0010222 B1 EP0010222 B1 EP 0010222B1 EP 79103758 A EP79103758 A EP 79103758A EP 79103758 A EP79103758 A EP 79103758A EP 0010222 B1 EP0010222 B1 EP 0010222B1
Authority
EP
European Patent Office
Prior art keywords
control
plate
layers
control plate
glass solder
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
Application number
EP79103758A
Other languages
German (de)
English (en)
Other versions
EP0010222A1 (fr
Inventor
Burkhard Dipl.-Phys. Littwin
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens 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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to AT79103758T priority Critical patent/ATE101T1/de
Publication of EP0010222A1 publication Critical patent/EP0010222A1/fr
Application granted granted Critical
Publication of EP0010222B1 publication Critical patent/EP0010222B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • H01J17/12—Control electrodes

Definitions

  • the invention relates to a control plate for a flat plasma imaging screen, with a carrier plate which carries parallel control electrode tracks corresponding to the lines of the screen on the one side of the plate and perpendicular control electrode tracks corresponding to the columns of the screen on the other side of the plate and which carries the control electrode tracks at their intersection have through control holes.
  • Such a control plate is used in a flat plasma screen for matrix control of the individual pixels.
  • a row and a column i. H. Driving the corresponding row electrode column and column electrode track
  • the control hole is released at the intersection of the row and the column.
  • electrons are discharged from the plasma of the gas discharge space behind the control plate into the acceleration space located in front of the control plate. There they are accelerated and create a light spot on the image point in front of the selected crossing point on the front plate of the screen.
  • a description of this two-chamber principle can be found, for example, in DE-A-26 15 721
  • control plate The structure of a control plate is also described in this DE-A. It consists of a glass carrier plate with the control electron tracks on both sides of the plate. The control holes are made by chemical etching.
  • control holes are then not only limited by the requirement for sufficient mechanical stability and a sufficient number of control holes, but also by the fact that no or only half-actuated control holes must not allow electrons to pass through and that the electrical penetration of the the acceleration anode attached to the front plate remains as small as possible through the control holes on the discharge space.
  • the present invention has for its object to design the structure of a control plate so that it meets the requirements for mechanical stability and in terms of electrical properties in the same way
  • the carrier plate is constructed in a sandwich-like manner from at least three layers, of which the middle one consists of metal and the outer one of insulator material
  • the outer layers consist of glass plates which are sintered onto the middle metallic layer via a respective glass solder layer.
  • an advantageous embodiment of this solution provides that the glass solder layers lying on the metallic layer consist of a metallized gold solder sprayed and sintered onto the metallic layer and the outer layers consist of a stable glass solder sprayed and sintered thereon.
  • the glass solder layer of crystallizing glass solder adjacent to the metallic layer adheres better than stable glass solder; the layer of stable glass solder gives a smoother surface than crystallizing glass solder.
  • these two properties are combined in a favorable way Cooling also remains crystalline.
  • both a selective chemical etching of the individual layers can be carried out in succession, as is known per se for example from DE B 2013196 for a metallic layer structure, and a method using an ion beam or laser beam can be used.
  • the structure according to the invention offers the advantage that the heat generated during drilling can be dissipated through the metallic middle layer, so that there are no cracks in the glass layers due to thermal shock, which would impair the mechanical stability is advantageous if the entire control plate is adapted in its average coefficient of thermal expansion to that of the screen.
  • the metallic middle layer can also be used as a potential-determining electrode for control. It preferably consists of a metal whose coefficient of thermal expansion is matched to that of the glass, such as a NiFeCo alloy (Vacovit). It is advantageous if the surface of the metallic middle layer consists of aluminum.
  • the drawing schematically shows a section through a control plate constructed according to the invention perpendicular to the plate surfaces, a control hole being detected.
  • 1 designates a metallic middle layer made of a NiFeCo alloy with a thickness of, for example, 80 ⁇ m.
  • a glass solder layer 2 or 3 is connected on both sides of the layer surfaces.
  • These layers 1 and 5 form the carrier plate of the control plate.
  • On the outside of the glass layer 4 there is a metallic control electrode track 6, cut transversely to its longitudinal direction.
  • a metallic control electrode track 7 is cut longitudinally. In the area of the control hole, all layers 1 to 5 of the carrier plate and the two control electrode tracks 6, 7 lie one above the other, the two control electrode tracks 6, 7 marking the matrix point as an overlap of the corresponding row and column.
  • the control hole runs perpendicular to the control plate surfaces through all carrier plate layers 1 to 5 and through the control electrode tracks 6 and 7. It is produced, for example, by thermal etching.
  • the carrier plate is produced beforehand as follows: the metal layer 1 is sprayed on both sides and the glass layers 4, 5 on one side with glass solder powder (e.g. Schott 8596). After the powder has dried, the layers 1, 4 and 5 are pressed together between two flat metal plates at a temperature of, for example, 520 ° C., which allows the glass solder powder to sinter together. This results in the glass solder layers 2 and 3, 5 hold together.
  • the metallic control electrode tracks are then applied to the carrier plate. This is advantageously done galvanically by depositing metal layers on a photoresist mask onto a thin, previously vapor-deposited continuous contact layer.
  • control holes are etched free in several steps.
  • the control holes in the control electrode tracks 6, 7 have already been created by appropriate covering during galvanic deposition.
  • a second masking leaves only the control points to be etched into the glass layers 4 and 5.
  • the control holes through the glass layers 4, 5 to the glass solder layers 2, 3 are then formed by etching with dilute hydrofluoric acid.
  • the glass solder layers 2, 3 are then etched with nitric acid solution, mixed with a little hydrofluoric acid, until the control holes expose the metal layer 1.
  • the further etching of the control holes through the metal layer 1 takes place with an iron chloride solution, the glass solder layers 2 serving as a mask for this etching.
  • This step etching causes relatively minor undercuts in the direction of the plate.
  • the previously etched layer serves as a mask for the subsequent etching.
  • control holes there are further possibilities to bring the control holes into the control plate by means of ion beam processes or laser beam processes.
  • the laser beam process in particular allows precise drilling.
  • the metallic middle layer 1 dissipates the heat generated during drilling, so that no local thermal stresses can arise in the glass layers 4, 5. There is no risk of cracking.

Landscapes

  • Gas-Filled Discharge Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Claims (6)

1. Plaque de commande pour un écran de visualisation au plasma plan, du type comprenant une plaque de support portant sur un côté de la plaque des pistes d'électrodes de commande parallèles, correspondant aux lignes de l'écran et sur l'autre face de la plaque des pistes d'électrodes de commande parallèles et perpendiculaires aux précédentes et correspondant aux colonnes de l'écran, ladite plaque de commande comportant des ouvertures de commande traversant les pistes d'électrodes de commande aux points de croisement de ces dernières, caractérisée par le fait que la plaque de support est constituée à la manière d'un sandwich avec au moins trois couches (1, 4, 5) dont la couche médiane (1) est faite avec un métal et les couches extérieures (4, 5) avec un matériau isolant.
2. Plaque de commande selon la revendication 1, caractérisée par le fait que les couches extérieures (4, 5) sont constituées par des plaques de verre qui sont frittées sur la couche métallique médiane (1) respectivement par l'intermédiaire d'une couche en verre de soudure (2, 3).
3. Plaque de commande selon la revendication 2, caractérisée par le fait que les couches extérieures (4, 5) sont constituées avec de la poudre de verre de soudure frittée.
4. Plaque de commande selon la revendication 3, caractérisée par le fait que les couches au verre de soudure (2, 3) qui portent contre la couche métallique (1), sont constituées par du verre de soudure métallisant pulvérisé et fritté sur la couche métallique (1), alors que les couches extérieures (4, 5) sont constituées par du verre de soudure stable pulvérisé et fritté sur les couches en verre de soudure métallisant (2, 3).
5. Plaque de commande selon l'une des revendications 1 à 4, caractérisée par le fait que la couche métallique médiane (1) est constituée sur ses faces supérieures par de l'aluminium.
6. Plaque de commande selon l'une des revendications 1 à 5, caractérisée par le fait que son coefficient de dilatation thermique moyen est adapté à celui de l'écran.
EP79103758A 1978-10-12 1979-10-02 Plaque de commande pour un écran plat à plasma de reproduction d'image Expired EP0010222B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79103758T ATE101T1 (de) 1978-10-12 1979-10-02 Steuerplatte fuer einen flachen plasmabildschirm.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2844512A DE2844512C2 (de) 1978-10-12 1978-10-12 Steuerplatte zur Matrixansteuerung einzelner Bildpunkte nach Zeile und Spalte auf einem Bildschirm in flachen Plasmabildwiedergabevorrichtungen
DE2844512 1978-10-12

Publications (2)

Publication Number Publication Date
EP0010222A1 EP0010222A1 (fr) 1980-04-30
EP0010222B1 true EP0010222B1 (fr) 1981-07-01

Family

ID=6052037

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79103758A Expired EP0010222B1 (fr) 1978-10-12 1979-10-02 Plaque de commande pour un écran plat à plasma de reproduction d'image

Country Status (5)

Country Link
US (1) US4329617A (fr)
EP (1) EP0010222B1 (fr)
JP (1) JPS5578440A (fr)
AT (1) ATE101T1 (fr)
DE (1) DE2844512C2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154053A (en) * 1984-02-08 1985-08-29 Philips Electronic Associated High resolution channel multiplier dynodes
US4504565A (en) * 1984-04-17 1985-03-12 Markem Corporation Radiation imageable compositions containing hollow ceramic microspheres
EP0189858A3 (fr) * 1985-01-31 1986-10-29 Siemens Aktiengesellschaft Unité de commande et son procédé de fabrication, en particulier pour dispositifs d'affichage
JPH0666130B2 (ja) * 1985-04-25 1994-08-24 富士通株式会社 ガス放電パネルの製造方法
DE3609967A1 (de) * 1986-03-25 1987-10-01 Standard Elektrik Lorenz Ag Steuerscheibe fuer bildwiedergabevorrichtungen
US5721468A (en) * 1992-02-06 1998-02-24 U.S. Philips Corporation Flat-panel type picture display device with electron propagation ducts
US6956210B2 (en) * 2003-10-15 2005-10-18 Micron Tchnology, Inc. Methods for preparing samples for atom probe analysis

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3755704A (en) * 1970-02-06 1973-08-28 Stanford Research Inst Field emission cathode structures and devices utilizing such structures
US3753022A (en) * 1971-04-26 1973-08-14 Us Army Miniature, directed, electron-beam source
US3744247A (en) * 1971-09-14 1973-07-10 Nasa Single grid accelerator for an ion thrustor
US3777206A (en) * 1972-03-24 1973-12-04 Sperry Rand Corp Electrodes for gas plasma display panels and method of manufacture thereof
JPH0127432B2 (fr) * 1975-01-24 1989-05-29 Hitachi Ltd
NL7600419A (nl) * 1976-01-16 1977-07-19 Philips Nv Kleurenbeeldbuis en werkwijze ter vervaardiging daarvan.
DE2615721C2 (de) * 1976-04-09 1982-10-21 Siemens AG, 1000 Berlin und 8000 München Anzeigevorrichtung mit einem Gasentladungsraum als Quelle für Elektronen und einem Nachbeschleunigungsraum zur Nachbeschleunigung dieser Elektronen
DE2750587A1 (de) * 1977-11-11 1979-05-17 Siemens Ag Gasentladungsanzeigevorrichtung mit abstandselementen
US4160191A (en) * 1977-12-27 1979-07-03 Hausfeld David A Self-sustaining plasma discharge display device

Also Published As

Publication number Publication date
DE2844512C2 (de) 1980-11-20
US4329617A (en) 1982-05-11
DE2844512B1 (de) 1980-03-20
JPS5578440A (en) 1980-06-13
ATE101T1 (de) 1981-07-15
EP0010222A1 (fr) 1980-04-30

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