EP0031921B1 - Gas discharge display device comprising at least one spacer frame limiting the post-acceleration space - Google Patents

Gas discharge display device comprising at least one spacer frame limiting the post-acceleration space Download PDF

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Publication number
EP0031921B1
EP0031921B1 EP80107828A EP80107828A EP0031921B1 EP 0031921 B1 EP0031921 B1 EP 0031921B1 EP 80107828 A EP80107828 A EP 80107828A EP 80107828 A EP80107828 A EP 80107828A EP 0031921 B1 EP0031921 B1 EP 0031921B1
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EP
European Patent Office
Prior art keywords
spacing frame
post
gas discharge
frame
acceleration
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Expired
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EP80107828A
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German (de)
French (fr)
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EP0031921A1 (en
Inventor
Burkhard Dipl.-Phys. Littwin
Wilhelm Huber
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Siemens AG
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Siemens AG
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Priority to AT80107828T priority Critical patent/ATE7435T1/en
Publication of EP0031921A1 publication Critical patent/EP0031921A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/38—Cold-cathode tubes
    • H01J17/48—Cold-cathode tubes with more than one cathode or anode, e.g. sequence-discharge tube, counting tube, dekatron
    • H01J17/49—Display panels, e.g. with crossed electrodes, e.g. making use of direct current
    • H01J17/498—Display panels, e.g. with crossed electrodes, e.g. making use of direct current with a gas discharge space and a post acceleration space for electrons

Definitions

  • the invention relates to a gas discharge display device with a gas-filled space, which is sealed gas-tight on one side by a front panel and on the opposite side by a rear panel and is divided by a control disk into a gas discharge space and a post-free post-acceleration space, which is on one side as a line conductor and on on its other side, as a column conductor, carries a matrix path which can be controlled separately and is broken together with these paths in the intersection points of the matrix, and which has a luminescent screen provided on the front plate side with an anode layer and delimiting the post-acceleration space, and one or more against one another on the rear plate side insulated cathodes delimiting the gas discharge space are located opposite each other, a spacing frame laterally delimiting these spaces being provided between the control disk and the front plate and between the control disk and cathode (s) t.
  • a gas discharge display device with a cathode which consists of cathode strips which are isolated from one another, parallel to one another and can be controlled separately, is known from DE-A-2 643 915.
  • the division of the cathode into individual cathode strips which are isolated from one another is a further development of a surface cathode, as is known from DE-A-2 412 869 and is used for image reproduction in so-called flat screens or gas discharge displays.
  • Such a display device works on the principle of the spatial separation of electron generation and electron acceleration.
  • the tube used for this is divided into two chambers, which are connected to each other via a conductor matrix (control disk) perforated at the intersection of their rows and columns.
  • the chamber between the cathode or cathodes on the back plate and the strip-shaped auxiliary anodes as rows of the conductor matrix is the space for the gas discharge.
  • the other chamber is the post-acceleration space between the splitting plane of the conductor matrix (control disk) and a surface anode, which represents a fluorescent screen electrode.
  • a gas discharge display device is already known from DE-A-2 615 721, in which the creeping strength in the post-acceleration space is increased.
  • no measures have been taken in this known arrangement in order to improve the high-voltage dielectric strength in the edge region of the opposite potential layers, in which electrical flashovers occur particularly easily due to the distortion of the electrical field.
  • the present invention has for its object to provide a gas discharge display device that makes it possible to use a high post-acceleration voltage in the post-acceleration space without causing electrical flashovers in this area.
  • the post-acceleration space is limited by at least one spacing frame, the inner edge of which corresponds almost or ideally completely to the outer edge of the active luminescent screen surface and whose clear width is dimensioned such that the inner frame edge remains free of the materials which effect the gas-tight connection, the inner frame area projecting into the space between the outer edge areas of the potential layers delimiting the post-acceleration space.
  • the spacer frame is preferably surrounded by a second, outer spacer frame, which is used for the vacuum-tight sealing of the post-acceleration space.
  • the spacing frames are expediently made of glass, the thermal expansion coefficient of which is matched to that of the fluorescent screen glass.
  • the gas discharge display device has the advantage that a high post-acceleration voltage can be used in the post-acceleration space without causing electrical flashovers. It is therefore expedient to use a post-acceleration space without support so that the critical area is limited to the lateral boundary of the post-acceleration space.
  • the gas discharge display device shown schematically in FIG. 1 essentially consists of a post-acceleration chamber 1 with an excessively wide spacing frame 2 between the front plate 4 and control disk 5 to increase the high-voltage strength of the device.
  • the adhesive seams between the spacer frame 2 and the control disk 5 or front plate 4 are provided with the reference number 6.
  • the spacer frame 2 projects beyond the adhesive seams 6 laterally.
  • the high-voltage strength of a 1 mm long acceleration path based on electrical arcing at the edge of the post-acceleration space 1 is increased, for example, from 2.5 kV to 6 kV when the 0.8 mm high glass spacer frame 2 laterally projects over the adhesive seam 6 by about 5 mm in each case.
  • the spacer frame 2 shows a schematic representation of the structure of the inner part of the spacer frame 2 in the gas discharge display device with post-acceleration space 1.
  • the spacer frame 2 extends close to the active part of the front plate 4 provided with a potential layer 13 and a phosphor layer 8.
  • the potential layers 7 and 13 of the post-acceleration space 1 are separated from one another in their edge regions by the inner part of the spacing frame 2.
  • the inner edge of the spacer frame 2 is free of sealing material, e.g. from Glaslot.
  • the part of the spacer frame 2 which is directed towards the outer edge of the gas discharge display device is used for vacuum-tight sealing.
  • Adjusting pins 9 are attached to the glass of the front plate 4, which remain there during the manufacturing process, including the glass soldering technique, and which are used to adjust the phosphor grid 8, control grid 10 and control disk 5.
  • the height of the second, outer spacing frame 3 is greater than the height of the post-acceleration space 1 in order to be able to also seal additional control grids in a vacuum-tight manner without additional glass solder seams.
  • presintered glass solder rods can now be used, which are brought into the correct shape during the glass soldering process by the plastic deformation of the glass solder that takes place in the process.
  • an additional control grid 10 provided with a potential layer 14 is arranged in the post-acceleration chamber 1 between the front plate 4 provided with a potential layer 13 and a phosphor layer 8 and the control disk 5 provided with a potential layer 14.
  • control grid 10 When assembling the device, the control grid 10 is first brought into the correct position on the control disc 5 and fixed with a high-temperature adhesive at some points (adhesive seams 6) in relation to the control disc 5. Then the inner spacer frame 2 is also fixed on the control grid 10 with a few drops of a high-temperature adhesive.
  • four presintered glass soldering rods with a width of approx. 1 mm and a thickness of 2.5 mm to 3 mm are placed around the inner spacing frame 2. The entire structure is then subjected to an annealing process.
  • the inner spacing frame 2 delimits the post-acceleration space 1 between the front plate 4 provided with a potential layer 13 and a phosphor grid 8 and the control grid 10 provided with a potential layer 14, which is arranged on the control disk 5 provided with the potential layer 7 (column conductor).
  • Spacer frame 2, control grid 10 and control disc 5 are adjusted by means of adjusting pins 9 and fixed by adhesive seams 6 made of a high-temperature adhesive.
  • the outer spacing frame 3 consists on two opposite sides of glass strips pasted with glass solder 11 and on both other sides of glass solder.
  • Fig. 5 shows the structure of the post-acceleration room 1 for a fluorescent screen glass with an integrated spacer frame.
  • the conductive layer (potential layer 13). of the front plate 4 is only present in the interior of the post-acceleration space 1, the outer part of the wide spacing frame can be dispensed with. Therefore, you can place the high-voltage flashover preventing and protruding into the interior 1 part of the spacer frame 2 in the form of glass strips in the screen pan and attach it to the edge of the integrated spacer frame, for example with glass solder 11, after all the layers important for the function of the screen on the front panel 4 are applied.
  • the adjustment pin 9 attached to the front plate 4 in turn serves to adjust the control disk 5, the control grid 10, which is provided with a metallization (potential layer 14) and the spacer frame 2.
  • FIG. 6 shows a schematic representation of the structure of an inner and outer spacer frame 2 combined to form a unit in a gas discharge display device with a post-acceleration chamber 1, the control disk 5 provided with a potential layer 7 and the front plate 4 provided with a potential layer 13 and a phosphor layer 8 is limited.
  • the adjusting pin 9 extends from the front plate 4 through the spacer frame 2 and the control disk 5.
  • the spacer frame 2 is connected gas-tight to the control disk 5 and the front plate 4 via glass solder layers 11.

Landscapes

  • Gas-Filled Discharge Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

A gas discharge display device has a discharge chamber and a post-acceleration chamber which are separated by a perforated control disc having line and column conductors thereon. The post-acceleration chamber is limited at its lateral boundary by at least one spacing frame which leaves the post-acceleration chamber support-free in its active volume. The inner boundary of the lateral spacing frame substantially coincides with the outer boundary of an active luminescent screen surface which limits one side of the post-acceleration chamber, and the frame has a width such that the inner frame boundary is free of sealing material and which further maintains a separation between the outer edge regions of the potential layers on the opposite sides of the post-acceleration chamber. A high post-acceleration voltage can thus be employed in the post-acceleration chamber without producing arcing.

Description

Die Erfindung betrifft eine Gasentladungsanzeigevorrichtung mit einem gasgefüllten Raum, der auf einer Seite durch eine Frontplatte und auf der gegenüberliegenden Seite durch eine Rückplatte gasdicht abgeschlossen und durch eine Steuerscheibe in einen Gasentladungsraum und einen stützenfreien Nachbeschleunigungsraum unterteilt ist, die auf ihrer einen Seite als Zeilenleiter und auf ihrer anderen Seite als Spaltenleiter eine Matrix bildende und jeweils getrennt ansteuerbare Elektrodenbahnen trägt und zusammen mit diesen Bahnen in den Kreuzungspunkten der Matrix durchbrochen ist, und der auf der Frontplattenseite ein mit einer Anodenschicht versehener, den Nachbeschleunigungsraum begrenzender Leuchtschirm und auf der Rückplattenseite eine oder mehrere gegeneinander isolierte, den Gasentladungsraum begrenzende Kathoden gegenüberliegen, wobei zwischen Steuerscheibe und Frontplatte sowie zwischen Steuerscheibe und Kathode(n) ein diese Räume seitlich begrenzender Abstandsrahmen vorgesehen ist.The invention relates to a gas discharge display device with a gas-filled space, which is sealed gas-tight on one side by a front panel and on the opposite side by a rear panel and is divided by a control disk into a gas discharge space and a post-free post-acceleration space, which is on one side as a line conductor and on on its other side, as a column conductor, carries a matrix path which can be controlled separately and is broken together with these paths in the intersection points of the matrix, and which has a luminescent screen provided on the front plate side with an anode layer and delimiting the post-acceleration space, and one or more against one another on the rear plate side insulated cathodes delimiting the gas discharge space are located opposite each other, a spacing frame laterally delimiting these spaces being provided between the control disk and the front plate and between the control disk and cathode (s) t.

Eine Gasentladungsanzeigevorrichtung mit einer Kathode, die aus Kathodenstreifen besteht, die voneinander isoliert parallel zueinanderliegen und getrennt ansteuerbar sind, ist aus der DE-A-2 643 915 bekannt. Die Aufteilung der Kathode in einzelne voneinander isolierte Kathodenstreifen ist eine Weiterentwicklung einer Flächenkathode, wie sie aus der DE-A-2 412 869 bekannt ist und für die Bildwiedergabe bei sogenannten Flachbildschirmen bzw. Gasentladungs-Displays verwendet wird.A gas discharge display device with a cathode, which consists of cathode strips which are isolated from one another, parallel to one another and can be controlled separately, is known from DE-A-2 643 915. The division of the cathode into individual cathode strips which are isolated from one another is a further development of a surface cathode, as is known from DE-A-2 412 869 and is used for image reproduction in so-called flat screens or gas discharge displays.

Eine solche Anzeigevorrichtung arbeitet nach dem Prinzip der räumlichen Trennung von Elektronenerzeugung und Elektronenbeschleunigung. Die dazu verwendete Röhre ist in zwei Kammern aufgeteilt, die über eine an den Kreuzungspunkten ihrer Zeilen und Spalten gelochte Leitermatrix (Steuerscheibe) miteinander verbunden sind. Die Kammer zwischen der bzw. den Kathoden an der Rückplatte und den streifenförmigen Hilfsanoden als Zeilen der Leitermatrix ist der Raum für die Gasentladung. Die andere Kammer ist der Nachbeschleunigungsraum zwischen der Spaltebene der Leitermatrix (Steuerscheibe) und einer Flächenanode, die eine Leuchtschirmelektrode darstellt. Durch Ansteuern einer der Hilfsanoden entsteht eine keilförmige Gasentladung zwischen der Kathode und der Hilfsanode über deren ganze Zeilenlänge. Bei gleichzeitigem Ansteuern einer der als Matrixspalten dienenden streifenförmigen Steuerelektroden werden in der Gasentladung erzeugte Plasmaelektroden durch die Öffnung am Kreuzungspunkt von Zeile und Spalte in den Nachbeschleunigungsraum gezogen und auf die Anode beschleunigt. Am Aufschlagsort entsteht dann auf einer der Anode vorgelagerten Leuchtstoffschicht ein Lichtpunkt als Abbild des angesteuerten Kreuzungspunktes der Matrix. Mit entsprechender Matrixansteuerung nach zeitlichem Ablauf und Stärke lassen sich auf dem Leuchtschirm Zeichen und Bilder darstellen.Such a display device works on the principle of the spatial separation of electron generation and electron acceleration. The tube used for this is divided into two chambers, which are connected to each other via a conductor matrix (control disk) perforated at the intersection of their rows and columns. The chamber between the cathode or cathodes on the back plate and the strip-shaped auxiliary anodes as rows of the conductor matrix is the space for the gas discharge. The other chamber is the post-acceleration space between the splitting plane of the conductor matrix (control disk) and a surface anode, which represents a fluorescent screen electrode. By driving one of the auxiliary anodes, a wedge-shaped gas discharge occurs between the cathode and the auxiliary anode over their entire line length. When one of the strip-shaped control electrodes serving as matrix gaps is actuated at the same time, plasma electrodes generated in the gas discharge are drawn through the opening at the intersection of row and column into the post-acceleration space and accelerated onto the anode. At the point of impact, a light spot is then formed on a phosphor layer located in front of the anode as an image of the controlled crossing point of the matrix. With appropriate matrix control according to the time sequence and strength, characters and pictures can be displayed on the fluorescent screen.

Weiterhin ist aus der DE-A-2 750 587 eine Gasentladungsanzeigevorrichtung mit Abstandselementen bekannt, bei der zwischen Steuerscheibe und Nachbeschleunigungsanode Stege mit konstanter Wandstärke vorgesehen sind, die sich in der Ebene der Steuerscheibe erstrecken, an den Steuerscheibenlöchern vorbeigeführt sind und abschnittsweise abwechselnd parallel und schräg zu den ihnen zugewandten Leitern verlaufen.Furthermore, from DE-A-2 750 587 a gas discharge display device with spacer elements is known, in which webs with constant wall thickness are provided between the control disc and the post-acceleration anode, which extend in the plane of the control disc, are guided past the control disc holes and, in sections, alternately parallel and obliquely to the ladders facing them.

Für eine Abstandshalterung in einer Gasentladungsanzeigevorrichtung ist auch schon vorgeschlagen worden, zwischen Steuerscheibe (Steuerlochplatte) und Leuchtschirm mehrere aufeinandergestapelte Glasfolien anzuordnen, die auf ihren Oberflächen Metallschichten tragen. Die Metallschichten führen schwimmende Potentiale und homogenisieren dadurch das Beschleunigungsfeld [nicht vorveröffentlichte EP-A-0 013 365 nach Art. 54 (3) EPÜ].For a spacer in a gas discharge display device, it has also been proposed to arrange several stacked glass foils between the control disc (control perforated plate) and the fluorescent screen, which have metal layers on their surfaces. The metal layers carry floating potentials and thereby homogenize the acceleration field [not previously published EP-A-0 013 365 according to Art. 54 (3) EPC].

Aus der DE-A-2 615 721 ist bereits eine Gasentladungsanzeigevorrichtung bekannt, bei der zwar die Kriechspannungsfestigkeit im Nachbeschleunigungsraum erhöht wird. Allerdings sind in dieser bekannten Anordnung keine Massnahmen getroffen, um im Randbereich der gegenüberliegenden Potentialschichten, in dem aufgrund der Verzerrung des elektrischen Feldes besonders leicht elektrische Überschläge auftreten, die Hochspannungs-Durchschlagsfestigkeit zu verbessern.A gas discharge display device is already known from DE-A-2 615 721, in which the creeping strength in the post-acceleration space is increased. However, no measures have been taken in this known arrangement in order to improve the high-voltage dielectric strength in the edge region of the opposite potential layers, in which electrical flashovers occur particularly easily due to the distortion of the electrical field.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Gasentladungsanzeigevorrichtung zu schaffen, die es ermöglicht, im Nachbeschleunigungsraum eine hohe Nachbeschleunigungsspannung zu verwenden, ohne dass es in diesem Bereich zu elektrischen Überschlägen kommt. Zur Lösung dieser Aufgabe wird bei einer Gasentladungsanzeigevorrichtung der eingangs genannten Art erfindungsgemäss vorgeschlagen, dass der Nachbeschleunigungsraum von mindestens einem Abstandsrahmen begrenzt ist, dessen innere Berandung mit der äusseren Berandung der aktiven Leuchtschirmfläche nahezu oder im Idealfall völlig übereinstimmt und dessen lichte Weite derart dimensioniert ist, dass die innere Rahmenberandung frei von den die gasdichte Verbindung bewirkenden Materialien bleibt, wobei der inneren Rahmenbereich in den Raum zwischen den äusseren Randbereichen der den Nachbeschleunigungsraum begrenzenden Potentialschichten ragt.The present invention has for its object to provide a gas discharge display device that makes it possible to use a high post-acceleration voltage in the post-acceleration space without causing electrical flashovers in this area. To achieve this object, it is proposed according to the invention in a gas discharge display device of the type mentioned at the outset that the post-acceleration space is limited by at least one spacing frame, the inner edge of which corresponds almost or ideally completely to the outer edge of the active luminescent screen surface and whose clear width is dimensioned such that the inner frame edge remains free of the materials which effect the gas-tight connection, the inner frame area projecting into the space between the outer edge areas of the potential layers delimiting the post-acceleration space.

Der Abstandsrahmen ist dabei vorzugsweise von einem zweiten, äusseren Abstandsrahmen umgeben, der zur vakuumdichten Versiegelung des Nachbeschleunigungsraumes dient. Die Abstandsrahmen bestehen zweckmässig aus Glas, das in seinem thermischen Ausdehnungskoeffizienten dem des Leuchtschirmglases angepasst ist.The spacer frame is preferably surrounded by a second, outer spacer frame, which is used for the vacuum-tight sealing of the post-acceleration space. The spacing frames are expediently made of glass, the thermal expansion coefficient of which is matched to that of the fluorescent screen glass.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind in den kennzeichnenden Merkmalen der Unteransprüche 5 bis 16 enthalten.Further advantageous embodiments of the invention are contained in the characterizing features of subclaims 5 to 16.

Die erfindungsgemässe Gasentladungsanzeigevorrichtung hat den Vorteil, dass im Nachbeschleunigungsraum eine hohe Nachbeschleunigungsspannung verwendet werden kann, ohne dass es zu elektrischen Überschlägen kommt. Deshalb ist es zweckmässig, einen stützungsfreien Nachbeschleunigungsraum zu verwenden, so dass der kritische Bereich auf die seitliche Berandung des Nachbeschleunigungsraumes beschränkt wird.The gas discharge display device according to the invention has the advantage that a high post-acceleration voltage can be used in the post-acceleration space without causing electrical flashovers. It is therefore expedient to use a post-acceleration space without support so that the critical area is limited to the lateral boundary of the post-acceleration space.

Weitere Einzelheiten der Erfindung sollen anhand von in den Figuren der Zeichnung dargestellten Ausführungsbeispielen näher erläutert werden. Teile, die nicht unbedingt zum Verständnis der Erfindung beitragen, sind in den Figuren unbezeichnet oder weggelassen. Dabei zeigen:

  • Fig. 1 ein Ausführungsbeispiel einer erfindungsgemässen Gasentladungsanzeigevorrichtung schematisch als Ausschnitt,
  • Fig. 2 eine schematische Darstellung des Aufbaues des inneren Teiles des Abstandsrahmens einer Gasentladungsanzeigevorrichtung,
  • Fig. 3 eine schematische Darstellung des Aufbaues eines inneren und eines äusseren Abstandsrahmens einer Gasentladungsanzeigevorrichtung,
  • Fig. 4 eine schematische Darstellung einer weiteren Ausführungsform des Aufbaues eines inneren und äusseren Abstandsrahmens,
  • Fig. 5 eine schematische Darstellung des Aufbaues des Nachbeschleunigungsraumes für ein Leuchtschirmglas mit integriertem Abstandsrahmen und
  • Fig. 6 eine schematische Darstellung des Aufbaues eines zu einer Einheit kombinierten inneren und äusseren Abstandsrahmens einer Gasentladungsanzeigevorrichtung.
Further details of the invention will be explained in more detail with reference to exemplary embodiments shown in the figures of the drawing. Parts that do not necessarily contribute to an understanding of the invention are not shown in the figures or are omitted. Show:
  • 1 shows an exemplary embodiment of a gas discharge display device according to the invention schematically as a detail,
  • 2 shows a schematic representation of the structure of the inner part of the spacer frame of a gas discharge display device,
  • 3 shows a schematic representation of the structure of an inner and an outer spacing frame of a gas discharge display device,
  • 4 shows a schematic representation of a further embodiment of the structure of an inner and outer spacing frame,
  • Fig. 5 is a schematic representation of the structure of the post-acceleration space for a fluorescent screen glass with an integrated spacer frame and
  • Fig. 6 is a schematic representation of the structure of a combined inner and outer spacer frame of a gas discharge display device.

Die in Fig. 1 schematisch dargestellte Gasentladungsanzeigevorrichtung besteht im wesentlichen aus einem Nachbeschleunigungsraum 1 mit einem überbreiten Abstandsrahmen 2 zwischen Frontplatte 4 und Steuerscheibe 5 zur Erhöhung der Hochspannungsfestigkeit der Vorrichtung. Die Klebenähte zwischen Abstandsrahmen 2 und Steuerscheibe 5 bzw. Frontplatte 4 sind mit dem Bezugszeichen 6 versehen. Der Abstandsrahmen 2 überragt dabei die Klebenähte 6 seitlich. Die Hochspannungsfestigkeit einer 1 mm langen Beschleunigungsstrecke bezogen auf elektrische Überschläge am Rande des Nachbeschleunigungsraumes 1 ist beispielsweise von 2,5 kV auf 6 kV erhöht, wenn der 0,8 mm hohe Glas-Abstandsrahmen 2 die Klebenaht 6 seitlich um jeweils etwa 5 mm überragt.The gas discharge display device shown schematically in FIG. 1 essentially consists of a post-acceleration chamber 1 with an excessively wide spacing frame 2 between the front plate 4 and control disk 5 to increase the high-voltage strength of the device. The adhesive seams between the spacer frame 2 and the control disk 5 or front plate 4 are provided with the reference number 6. The spacer frame 2 projects beyond the adhesive seams 6 laterally. The high-voltage strength of a 1 mm long acceleration path based on electrical arcing at the edge of the post-acceleration space 1 is increased, for example, from 2.5 kV to 6 kV when the 0.8 mm high glass spacer frame 2 laterally projects over the adhesive seam 6 by about 5 mm in each case.

Fig. 2 zeigt eine schematische Darstellung des Aufbaues des inneren Teiles des Abstandsrahmens 2 bei der Gasentladungsanzeigevorrichtung mit Nachbeschleunigungsraum 1. Der Abstandsrahmen 2 reicht nahe an den aktiven Teil der mit einer Potentialschicht 13 und einer Leuchtstoffschicht 8 versehenen Frontplatte 4 heran. Die Potentialschichten 7 und 13 des Nachbeschleunigungsraumes 1 werden in ihren Randbereichen vom inneren Teil des Abstandsrahmens 2 voneinander getrennt. Der innere Rand des Abstandsrahmens 2 ist frei von Abdichtmaterial, z.B. von Glaslot. Der zur äusseren Berandung der Gasentladungsanzeigevorrichtung gerichtete Teil des Abstandsrahmens 2 dient zur vakuumdichten Versiegelung.2 shows a schematic representation of the structure of the inner part of the spacer frame 2 in the gas discharge display device with post-acceleration space 1. The spacer frame 2 extends close to the active part of the front plate 4 provided with a potential layer 13 and a phosphor layer 8. The potential layers 7 and 13 of the post-acceleration space 1 are separated from one another in their edge regions by the inner part of the spacing frame 2. The inner edge of the spacer frame 2 is free of sealing material, e.g. from Glaslot. The part of the spacer frame 2 which is directed towards the outer edge of the gas discharge display device is used for vacuum-tight sealing.

Beim Aufbau der Anzeigen gewinnt man an Optimierungsspielraum, wenn man den Abstandsrahmen diesen beiden Funktionen entsprechend in einen inneren und einen äusseren Rahmen aufteilt. An dem Glas der Frontplatte 4 sind Justierstifte 9 befestigt, die während des Herstellungsprozesses einschliesslich der Glaslottechnik dort verbleiben und die zur Justierung von Leuchtstoffraster 8, Steuergitter 10 und Steuerscheibe 5 dienen.When setting up the displays, you have more scope for optimization if you divide the spacing frame into an inner and an outer frame according to these two functions. Adjusting pins 9 are attached to the glass of the front plate 4, which remain there during the manufacturing process, including the glass soldering technique, and which are used to adjust the phosphor grid 8, control grid 10 and control disk 5.

Die Fig. 3 bis 5 zeigen Beispiele für Aufbauvarianten. So ist in Fig. 3 die Höhe des zweiten, äusseren Abstandsrahmens 3 grösser als es der Höhe des Nachbeschleunigungsraumes 1 entspricht, um auch noch zusätzliche Steuergitter ohne zusätzliche Glaslotnähte vakuumdicht versiegeln zu können. Beim Aufbau des äusseren Abstandsrahmenn 3 kann man nun je nach den gestellten Anforderungen vorgesinterte Glaslotstäbe verwenden, die beim Glaslotprozess durch die dabei ablaufende plastische Deformation des Glaslotes in die richtige Gestalt gebracht werden.3 to 5 show examples of construction variants. 3, the height of the second, outer spacing frame 3 is greater than the height of the post-acceleration space 1 in order to be able to also seal additional control grids in a vacuum-tight manner without additional glass solder seams. When building the outer spacer frame 3, depending on the requirements, presintered glass solder rods can now be used, which are brought into the correct shape during the glass soldering process by the plastic deformation of the glass solder that takes place in the process.

Werden jedoch besonders hohe Anforderungen an die Festigkeit des Glaslotnähte gestellt, so ist es vorteilhaft, den grössten Teil des Dickenbereiches des äusseren Abstandsrahmens 3 als Glasteil(e) zu gestalten, um die Dicke der Glaslotnaht so klein wie möglich zu wählen. Ebenso sind Übergänge zwischen den beiden geschilderten Aufbauvarianten möglich.However, if particularly high demands are placed on the strength of the glass solder seams, it is advantageous to design the largest part of the thickness range of the outer spacing frame 3 as a glass part (e) in order to choose the thickness of the glass solder seam as small as possible. Transitions between the two construction variants described are also possible.

Bei dem in Fig. 3 dargestellten Ausführungsbeispiel ist ein zusätzliches, mit einer Potentialschicht 14 versehenes Steuergitter 10 zwischen dem mit einer Potentialschicht 13 und einer Leuchtstoffschicht 8 versehenen Frontplatte 4 und der mit einer Potentialschicht 14 versehenen Steuerscheibe 5 im Nachbeschleunigungsraum 1 angeordnet.In the embodiment shown in FIG. 3, an additional control grid 10 provided with a potential layer 14 is arranged in the post-acceleration chamber 1 between the front plate 4 provided with a potential layer 13 and a phosphor layer 8 and the control disk 5 provided with a potential layer 14.

Beim Zusammenbau der Vorrichtung wird zunächst auf der Steuerscheibe 5 das Steuergitter 10 in die richtige Position gebracht und mit einem Hochtemperaturkleber an einigen Punkten (Klebenähten 6) in bezug zur Steuerscheibe 5 fixiert. Anschliessend wird der innere Abstandsrahmen 2 auf dem Steuergitter 10 ebenfalls mit einigen Tropfen eines Hochtemperaturklebers fixiert. Zur vakuumdichten Versiegelung des Aufbaues werden vier vorgesinterte Glaslotstäbe mit einer Breite von ca. 1 mm und einer Dicke von 2,5 mm bis 3 mm aussen um den inneren Abstandsrahmen 2 gelegt. Der ganze Aufbau wird dann einem Temperprozess unterzogen. Das anfänglich im Überschuss vorhandene Glaslot füllt beim Absinken der Frontplatte 4 auf das durch Steuergitter 10 und inneren Abstandsrahmen 2 bestimmte Niveau noch vorhandene Lücken aus und erzeugt so eine dichte Verbindung zwischen Steuerscheibe 5 und Frontplatte 4. Zum Justieren der Anordnung sind wiederum Justierstifte 9 vorgesehen.When assembling the device, the control grid 10 is first brought into the correct position on the control disc 5 and fixed with a high-temperature adhesive at some points (adhesive seams 6) in relation to the control disc 5. Then the inner spacer frame 2 is also fixed on the control grid 10 with a few drops of a high-temperature adhesive. For the vacuum-tight sealing of the structure, four presintered glass soldering rods with a width of approx. 1 mm and a thickness of 2.5 mm to 3 mm are placed around the inner spacing frame 2. The entire structure is then subjected to an annealing process. The glass solder initially present in excess fills gaps still present when the front plate 4 sinks to the level determined by the control grille 10 and inner spacing frame 2 and thus creates a tight connection between the control disk 5 and the front plate 4. Adjusting pins 9 are again provided for adjusting the arrangement.

Bei dem in Fig. 4 dargestellten Ausführungsbeispiel werden wiederum zwei Abstandsrahmen verwendet. Der innere Abstandsrahmen 2 begrenzt den Nachbeschleunigungsraum 1 zwischen der mit einer Potentialschicht 13 und einem Leuchtstoffraster 8 versehenen Frontplatte 4 und dem mit einer Potentiaischicht 14 versehenen Steuergitter 10, das auf der mit der Potentiaischicht 7 (Spaltenleiter) versehenen Steuerscheibe 5 angeordnet ist. Abstandsrahmen 2, Steuergitter 10 und Steuerscheibe 5 sind mittels Justierstiften 9 justiert und durch Klebenähte 6 aus einem Hochtemperaturkleber fixiert. Der äussere Abstandsrahmen 3 besteht an zwei gegenüberliegenden Seiten aus mit Glaslot 11 bepasteten Glasstreifen und an beiden anderen Seiten aus Glaslot.In the embodiment shown in FIG. 4, two spacer frames are used again. The inner spacing frame 2 delimits the post-acceleration space 1 between the front plate 4 provided with a potential layer 13 and a phosphor grid 8 and the control grid 10 provided with a potential layer 14, which is arranged on the control disk 5 provided with the potential layer 7 (column conductor). Spacer frame 2, control grid 10 and control disc 5 are adjusted by means of adjusting pins 9 and fixed by adhesive seams 6 made of a high-temperature adhesive. The outer spacing frame 3 consists on two opposite sides of glass strips pasted with glass solder 11 and on both other sides of glass solder.

Fig. 5 zeigt den Aufbau des Nachbeschleunigungsraumes 1 für ein Leuchtschirmglas mit integriertem Abstandsrahmen. Da im Gegensatz zum Bildschirmaufbau mit einer ebenen Frontplatte 4 beim Aufbau nach Fig. 5 die leitfähige Schicht (Potentiaischicht 13). der Frontplatte 4 nur im Inneren des Nachbeschleunigungsraumes 1 vorhanden ist, kann auf den äusseren Teil des breiten Abstandsrahmens verzichtet werden. Daher kann man den Hochspannungs- überschläge verhindernden und in den Innenraum 1 hineinragenden Teil des Abstandsrahmens 2 in Form von Glasstreifen in die Bildschirmwanne hineinlegen und am Rand des integrierten Abstandsrahmens z.B. mit Glaslot 11 befestigen, nachdem alle für die Funktion des Bildschirmes wichtigen Schichten auf die Frontplatte 4 aufgebracht sind. Der an der Frontplatte 4 angebrachte Justierstift 9 dient wiederum zum Justieren von Steuerscheibe 5, von Steuergitter 10, die mit einer Metallisierung (Potentialschicht 14) versehen ist und von Abstandsrahmen 2.Fig. 5 shows the structure of the post-acceleration room 1 for a fluorescent screen glass with an integrated spacer frame. As opposed to the screen construction with a flat front plate 4 in the construction according to FIG. 5, the conductive layer (potential layer 13). of the front plate 4 is only present in the interior of the post-acceleration space 1, the outer part of the wide spacing frame can be dispensed with. Therefore, you can place the high-voltage flashover preventing and protruding into the interior 1 part of the spacer frame 2 in the form of glass strips in the screen pan and attach it to the edge of the integrated spacer frame, for example with glass solder 11, after all the layers important for the function of the screen on the front panel 4 are applied. The adjustment pin 9 attached to the front plate 4 in turn serves to adjust the control disk 5, the control grid 10, which is provided with a metallization (potential layer 14) and the spacer frame 2.

Fig. 6 zeigt eine schematische Darstellung des Aufbaues eines zu einer Einheit kombinierten inneren und äusseren Abstandsrahmens 2 bei einer Gasentladungsanzeigevorrichtung mit einem Nachbeschleunigungsraum 1, der von der mit einer Potentialschicht 7 versehenen Steuerscheibe 5 und dem mit einer Potentialschicht 13 und einer Leuchtstoffschicht 8 versehenen Frontplatte 4 begrenzt ist. Der Justierstift 9 reicht von der Frontplatte 4 durch den Abstandsrahmen 2 und die Steuerscheibe 5 hindurch. Der Abstandsrahmen 2 ist mit der Steuerscheibe 5 und der Frontplatte 4 über Glaslotschichten 11 gasdicht verbunden.6 shows a schematic representation of the structure of an inner and outer spacer frame 2 combined to form a unit in a gas discharge display device with a post-acceleration chamber 1, the control disk 5 provided with a potential layer 7 and the front plate 4 provided with a potential layer 13 and a phosphor layer 8 is limited. The adjusting pin 9 extends from the front plate 4 through the spacer frame 2 and the control disk 5. The spacer frame 2 is connected gas-tight to the control disk 5 and the front plate 4 via glass solder layers 11.

Claims (16)

1. Gas discharge display device having a gas- filled space which on one side is sealed by a front plate (4) and on the opposite side by a rear plate so as to be gas-tight and which is divided into a gas discharge space and a support-free post-acceleration space (1) by a control disc (5) which carries electrode paths on its one side as row conductors (12) and on its other side as column conductors (7), forming a matrix and each separately controllable, and which disc together with these paths is perforated at the crossing-points of the matrix, and which on the front plate side faces a fluorescent screen (8) provided with an anode layer (13) and bounding the post-acceleration space, and which on the rear plate side faces one or more mutually insulated cathodes bounding the gas discharge space, where a spacing frame, laterally bounding these spaces, is arranged both between control disc (5) and front plate (4) and also between control disc (5) and cathode(s), characterised in that the post-acceleration space (1) is bounded by at least one spacing frame (2), whose inner edging virtually corresponds to the outer edging of the active fluorescent screen surface (8) or corresponds completely in the ideal case, and whose inside width is dimensioned to be such that the inner frame edging remains free from the materials (6) effecting the gas-tight connection, where the inner frame region projects into the space between the outer edging regions of the potential layers (7, 13, 14) bounding the post-acceleration space (1).
2. Device as claimed in claim 1, characterised in that the spacing frame (2) is surrounded by a second outer spacing frame (3) which serves to seal the post-acceleration space (1) so as to be vacuum-tight.
3. Device as claimed in claim 1 or 2, characterised in that the spacing frame (2) consists of glass.
4. Device as claimed in claim 3, characterised in that the glass is matched to the plate glass in its coefficient of thermal expansion.
5. Device as claimed in one of claims 1 to 4, characterised in that the spacing frame (2) is composed of individual glass strips.
6. Device as claimed in one of claims 1 to 5, characterised in that the spacing frame (2) is fixed in its position by a high-temperature adhesive.
7. Device as claimed in one of claims 1 to 6, characterised in that the spacing frame (2) formed from individual components forms overlaps at its butt joints.
8. Device as claimed in one of claims 2 to 7, characterised in that the outer spacing frame (3) consists of a material which is plastically deformed in a thermal process and enters into a fixed and vacuum-tight connection with front plate (4) and control disc (5).
9. Device as claimed in one of claims 2 to 8, characterised in that the the outer spacing frame (3) consists of pre-sintered glass solder strips.
10. Device as claimed in one of claims 2 to 9, characterised in that sections of the outer spacing frame (3) are formed from glass strips.
11. Device as claimed in one of claims 2 to 10, characterised in that the height of the outer spacing frame (3) is dimensioned to be such that not only the support-free post-acceleration space (1) but also one or more control grids (10), which are arranged between control disc (5) and front plate (4), are surrounded by said spacing frame.
12. Device as claimed in one of claims 2 to 11, characterised in that the sections of the outer spacing frame (3) which consist of glass, form a unit together with the adjacent sections of the inner spacing frame (2).
13. Device as claimed in one of claims 2 to 11, characterised in that the outer and inner spacing frame (2, 3) respectively consist of one piece.
14. Device as claimed in one of claims 2 to 12, characterised in that the outer and inner spacing frame (2, 3) consist of one piece.
15. Device as claimed in one of claims 1 to 14, characterised in that openings are formed at the appropriate points in the inner spacing frame (2) for adjustment pins (9) fitted inside the gas discharge display device.
16. Device as claimed in one of claims 1 to 14, characterised in that openings are formed at the appropriate points in the outer spacing frame (3) for adjustment pins (9) fitted on the outer edge of the gas discharge display device.
EP80107828A 1979-12-28 1980-12-11 Gas discharge display device comprising at least one spacer frame limiting the post-acceleration space Expired EP0031921B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80107828T ATE7435T1 (en) 1979-12-28 1980-12-11 GAS DISCHARGE INDICATOR WITH AT LEAST ONE SPACER FRAME DEFINING THE POST-ACCELERATION SPACE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2952528A DE2952528C2 (en) 1979-12-28 1979-12-28 Gas discharge indicator
DE2952528 1979-12-28

Publications (2)

Publication Number Publication Date
EP0031921A1 EP0031921A1 (en) 1981-07-15
EP0031921B1 true EP0031921B1 (en) 1984-05-09

Family

ID=6089752

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Application Number Title Priority Date Filing Date
EP80107828A Expired EP0031921B1 (en) 1979-12-28 1980-12-11 Gas discharge display device comprising at least one spacer frame limiting the post-acceleration space

Country Status (5)

Country Link
US (1) US4362967A (en)
EP (1) EP0031921B1 (en)
JP (1) JPS56102051A (en)
AT (1) ATE7435T1 (en)
DE (1) DE2952528C2 (en)

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DE3036671A1 (en) * 1980-09-29 1982-05-13 Siemens AG, 1000 Berlin und 8000 München FLAT SCREEN, METHOD FOR ITS PRODUCTION AND USE
DE3137653A1 (en) * 1981-09-22 1983-04-07 Siemens AG, 1000 Berlin und 8000 München Gas-discharge display device having a fluorescent protective layer and an anode protection grid
DE3206451A1 (en) * 1982-02-23 1983-09-08 Siemens AG, 1000 Berlin und 8000 München METHOD FOR REDUCING THE UNDERGROUND BRIGHTNESS IN THE LOWER IMAGE AREA OF A GAS DISCHARGE DISPLAY DEVICE
US4625148A (en) * 1983-03-28 1986-11-25 Siemens Ag Gas discharge display device with an auxiliary anode control plate
DE3328036A1 (en) * 1983-08-03 1985-02-14 Siemens AG, 1000 Berlin und 8000 München GAS DISCHARGE DISPLAY DEVICE WITH A SPACER FRAME AND METHOD FOR PRODUCING THIS FRAME
DE3329106A1 (en) * 1983-08-11 1985-02-21 Siemens AG, 1000 Berlin und 8000 München GAS DISCHARGE DISPLAY DEVICE WITH A RE-ACCELERATION RANGE
DE3522141A1 (en) * 1985-06-21 1987-01-02 Standard Elektrik Lorenz Ag DISPLAY DEVICE
US5207607A (en) * 1990-04-11 1993-05-04 Mitsubishi Denki Kabushiki Kaisha Plasma display panel and a process for producing the same
KR920015415A (en) * 1991-01-30 1992-08-26 시기 모리야 Flat cathode ray tube
JPH0619551U (en) * 1992-05-18 1994-03-15 和広 大王 Auxiliary handle
DE69507943T2 (en) * 1994-10-19 1999-09-16 Koninkl Philips Electronics Nv LIGHTING DEVICE, ELECTRODELESS LOW-PRESSURE DISCHARGE LAMP AND DISCHARGE VESSEL THEREFOR
EP0716438A1 (en) * 1994-12-06 1996-06-12 International Business Machines Corporation Field emission device and method for fabricating it
KR19980702417A (en) * 1995-12-22 1998-07-15 요트. 게. 아. 롤페즈 Display device with window frame and manufacturing method thereof

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JPS4889679A (en) * 1972-02-25 1973-11-22
GB1391764A (en) * 1972-11-06 1975-04-23 Burroughs Corp Display panel having high conductivity film anodes
DE2412869C3 (en) * 1974-03-18 1980-10-30 Siemens Ag, 1000 Berlin Und 8000 Muenchen Display device with a gas discharge space as electron source, with an electron post-acceleration space and with a luminescent screen and method for operating this display device
DE2615721C2 (en) * 1976-04-09 1982-10-21 Siemens AG, 1000 Berlin und 8000 München Display device with a gas discharge space as a source for electrons and a post-acceleration space for post-acceleration of these electrons
DE2643915C2 (en) * 1976-09-29 1983-10-06 Siemens Ag, 1000 Berlin Und 8000 Muenchen Display device
DE2750587A1 (en) * 1977-11-11 1979-05-17 Siemens Ag GAS DISCHARGE DISPLAY DEVICE WITH SPACER ELEMENTS

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EP0013365A1 (en) * 1978-12-20 1980-07-23 Siemens Aktiengesellschaft Spacing element in a gas discharge display device

Also Published As

Publication number Publication date
DE2952528C2 (en) 1985-10-10
EP0031921A1 (en) 1981-07-15
US4362967A (en) 1982-12-07
JPS56102051A (en) 1981-08-15
DE2952528A1 (en) 1981-07-02
ATE7435T1 (en) 1984-05-15

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