EP0030704A2 - Magnetizing device for the convergence assembly of in-line colour picture tubes - Google Patents

Magnetizing device for the convergence assembly of in-line colour picture tubes Download PDF

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Publication number
EP0030704A2
EP0030704A2 EP80107753A EP80107753A EP0030704A2 EP 0030704 A2 EP0030704 A2 EP 0030704A2 EP 80107753 A EP80107753 A EP 80107753A EP 80107753 A EP80107753 A EP 80107753A EP 0030704 A2 EP0030704 A2 EP 0030704A2
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EP
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Prior art keywords
coils
axes
neck
electron
magnetic
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EP80107753A
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German (de)
French (fr)
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EP0030704B1 (en
EP0030704A3 (en
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Erhard Kienle
Walter Kornaker
Felix Greiner
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Nokia Deutschland GmbH
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International Standard Electric Corp
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/44—Factory adjustment of completed discharge tubes or lamps to comply with desired tolerances

Definitions

  • the invention relates to a device for magnetizing a convergence device for inline color picture tubes and methods for convergence with this device.
  • Color picture tubes usually have a screen with phosphors of three different colors. Each type of phosphor is excited to glow by one of three electron beams emitted by an electron gun system. Color picture tubes in which the three electron guns of the electron gun system are arranged in one plane are referred to as inline color picture tubes. In such inline tubes, a so-called shadow mask is attached between the electron gun system and the luminescent screen, through the slit-shaped openings of which the electron beams strike the phosphor regions. For the inline color picture tube to operate properly, it is necessary for all three electron beams to cross each other in a mask slot over the entire mask area. In order to achieve this common crossover, the electron beams in the electron gun system are deflected by static magnetic fields. The setting of the magnetic fields required for this is called the convergence setting.
  • the convergence is set by rotating pre-magnetized magnetic rings, which are arranged on the outside around the neck of the tube above the electron gun system.
  • DE-PS 961 735 it is already known to arrange a permanent magnetic material in the interior of the tube neck in order to deflect an electron beam and to magnetize or remagnetize it from the outside in a targeted manner.
  • the invention relates to magnetizing devices of the latter type.
  • DE-OS 28 28 710 discloses devices and methods which are suitable for magnetizing and remagnetizing hard magnetic materials for setting the convergence.
  • FIGS. 11 and 12 show the images of two devices in which eight coils are arranged radially around a tube neck.
  • the coils are connected to each other so that the two, four and six-pole fields required for adjustment can be achieved. It has been shown that only small deflections of the electron beams are possible with such devices.
  • DE-OS 28 32 666 a magnetizing device is shown in Figure 2, in which the magnetic coils are arranged one behind the other in two planes in the beam direction.
  • the number of coils can be increased considerably, which leads to stronger magnetic fields that can be achieved and thus greater pre-deflection.
  • All deflection fields for electron beams not only change the direction of the electron beam, but also its shape. For the beam shape of the electron beams, it has proven to be unfavorable to carry out the preliminary deflection in two different planes.
  • Vorablenkun g is the electron made to adjust the convergence of a convergence device, but task these facilities, it is also to make the pre-deflection for color purity E instel- development. To adjust the color purity, it is necessary that all three electron beams are shifted together in the horizontal direction. The two-pole fields required for this are obtained in the magnetizing devices described above by appropriate switching of the radially arranged, electrically excitable magnetic coils. Deviating from this, DE-OS 28 32 667 describes a magnetizing device in which the color purity setting is arranged around the tube neck
  • the invention is based on the object of specifying a magnetizing device for the purpose described, which allows the electron beams to be influenced very strongly with the least possible change in beam shape.
  • the shape of the coils is adapted to the shape of the converging device through cross sections of the magnetic coils with unequal diameters.
  • the fact that all coil axes lie in the plane of the convergence device ensures that the beam shape changes are as small as possible.
  • Novel deflection systems extend over such a long area of the neck that they still cover a large part of the electron gun system. Therefore, so far it has been necessary to converge and adjust color purity before attaching the deflection system to the tube.
  • the fields of a proposed magnetizing device are so strong that the hard magnetic material attached in the tube neck can be magnetized or remagnetized even through the already installed deflection system.
  • 1 denotes the convergence device made of magnetically hard magnetic material.
  • This is an explosive magnetic ring arranged inside a tube neck.
  • This ring is arranged concentrically around the middle electron beam.
  • the electron beam direction is designated z.
  • the ring is located in the convergence plane, which is perpendicular to the z-axis.
  • Figure 1 shows a representation of the wire ring in the direction of view of the convergence device level, which is why the wire ring 1 appears only as a line.
  • an electrically excitable magnet coil 2 with a rectangular cross section is shown, the longitudinal axis of which lies in the viewing direction.
  • the long diameter of the rectangular cross section lies in the convergence plane. It can be seen that the coil shape is well adapted to the shape of the convergence device.
  • the inner diameter of a round coil 3 is drawn in with a broken line, which surrounds the same surface as the rectangular coil. It is easy to imagine from the figure that a homogeneous field can be achieved with the rectangular coil over the entire convergence device. In the case of the round coil, on the other hand, edge regions of the convergence device will be located in the inhomogeneous edge field of the coil.
  • the diameter of the round coil 3 had to be increased considerably. This would, however, only achieve a considerably weaker field with the same current flow through the coil. The maximum current flow is limited by the available voltage sources. Because of the better adaptation of the coil shape to the shape of the convergence device, a considerably higher field strength can therefore be achieved when a certain voltage source is present. It is essential, however, that all parts of the convergence device to be magnetized are located in a plane existing perpendicular to the beam axis.
  • a magnetizing device Around the neck 6 six coils 7 are disposed with radial, in each case less than 60 0 to each other coil axes in a first circuit. Two of the coil axes are on the x axis. These coils are operated in such a way that they generate a six-pole field, through which the two outer electron beams can be displaced together in the y direction against the central electron beam. In a second radius followed by six more coils 8, also having in each case by 60 0 offset against each other, radially disposed coils. Two of the six axes of the coils are on the y-axis.
  • the four coils 9 are operated in such a way that a four-pole field is generated with which the outer beams can be displaced in the y direction relative to one another, but which leaves the central electron beam unaffected.
  • the four coils 10, on the other hand, are operated in such a way that a four-pole field is created, by means of which the two outer electron beams are displaced relative to one another in the x direction, but which also leaves the central electron beam unaffected.
  • the arrangement of the coils for the four-fol Fields can also be done along two circular radii analogous to the six-fol coils.
  • the coils required for convergence adjustment were arranged along circles with different radii. However, elongated coils are required to adjust the color purity, which ensure an identical, homogeneous field at the location of all three electron beams.
  • the axes of the color purity coils coincide with the y-axis.
  • the two color purity coils arranged in the y direction above and below the coils described so far are operated in such a way that a two-pole field is created which shifts all three electron beams together by the same amount in the x direction.
  • the color purity coils are designated 11. Corresponding to the joint displacement of all three electron beams in the x direction, a common preliminary deflection of all three electron beams in the y direction is often desired for the raster adjustment.
  • two additional raster correction coils 12 are shown in FIG. 2, the axes of which coincide with the x-axis, and which are located in the x-direction to the left and right of the convergence coils.
  • the two coils 12 are also operated so that a two-pole field is created.
  • All coils have a rectangular cross-section.
  • the long diameters of the color purity coils 11 and the raster correction coils 12 are approximately twice to three times as long as the diameter of the convergence device in the x or y direction.
  • the long diameters of the convergence coils arranged in circles are each so large that all the coils on a circle fill this circle.
  • the small diameter of all coils is about 1 cm.
  • the color purity and raster correction coils each have 95 turns of a 0.5 2 copper wire.
  • the other coils each have 150 turns of a 0.25 2
  • Coils belonging to a basic deflection movement are connected in series and excited with a capacitor of approx. 200 ⁇ F with a maximum of ⁇ 500 V.
  • the achievable deflections lead to displacements of up to ⁇ ls mm on the screen of the color picture tube.
  • the magnetizing device described so far it is possible to deflect the two outer electron beams together or against one another, with the central electron beam unaffected.
  • the set magnetic field is impressed into the material of the converging device which can be magnetized and remagnetized using a method which is also customary for use in the magnetizing devices previously described.
  • the imprinting of the set magnetic field into the permanent magnetic material of the convergence device is therefore not discussed in more detail here.
  • FIG. 3 shows a further embodiment of a magnetizing device according to the invention, with which an outer electron beam can be set essentially independently of the middle and the other outer electron beam.
  • a permanent magnetic wire ring 3 in a tube neck 6 is again shown as a convergence device. All dimensions of FIG. 3 correspond to a magnetizing device, such as is used to magnetize a permanent magnetic material arranged in the inside of the neck of a so-called thick-necked tube with an outside diameter of approximately 36 mm.
  • the structure and mode of operation of the color purity correction coils 11 and raster correction coils 12 correspond entirely to those described in FIG. 2. In Figure 3, however, the developed magnetic coils are shown only on the right and above, while below and left only the plastic winding body are shown.
  • the field profile at the location of the right outer electron beam therefore essentially runs in the y direction, which causes a shift of this electron beam in the x direction. Since the magnetic field falls square to the distance from the coils, the middle and the other outer electron beam are hardly influenced.
  • the shift of an outer electron beam in the y-direction is shown using the left outer electron beam of FIG. 3.
  • a coil, the axis of which coincides with the x-axis, is electrically excited, as a result of which the coil forms a magnetic north and south pole.
  • the magnetic lines of such a coil close in a known manner via the outer field of the coil.
  • the left outer electron beam is in a magnetic field extending in the x direction, which results in pre-deflection in the y direction.
  • the coil arrangements for deflecting an outer electron beam each in the x or y direction have so far only been explained for one side of the magnetizing device.
  • the magnetizing device is symmetrical in its mode of operation and in its coil structure with respect to the x and y-axis, so that both outer electron beams can be deflected individually independently of one another and independently of the central electron beam in the x or y direction.
  • FIG. 4 shows a plan view of a winding body as used in FIG. 3 for applying the coils for raster correction and for the independent deflection of an external electron beam in the x and y directions.
  • the distance between the winding body or the coil made therefrom from the tube neck 6 and from the convergence device 1 is also shown in FIG.
  • the electrical design of the pillar 12 shape corresponds to that described in FIG.
  • a magnetizing device is suitable for magnetizing the permanent magnetic material of a converging device arranged inside a tube neck. Exactly the same structures, but only with enlarged geometric dimensions, can be used if permanent magnetic materials arranged around the outside of the tube neck have to be magnetized or remagnetized, or if the permanent magnetic material is arranged inside the tube neck, but still between the tube neck and the magnetizing device Parts of a deflection system. It is a particular advantage of the magnetizing devices according to the invention that permanent magnetic material arranged inside parts of a deflection system inside a tube neck can also be magnetized and remagnetized.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Video Image Reproduction Devices For Color Tv Systems (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

Eine Vorrichtung zum Magnetisieren der Konvergenzeinrichtung einer Farbbildröhre besteht aus um den Röhrenhals anordenbaren elektrisch erregbaren Spulen mit Spulenachsen in der Ebene, in der sich die Konvergenzeinrichtung befindet. Gemäß der Erfindung sind die Spulenquerschnitte in der Konvergenzeinrichtungsebene größer als die senkrecht dazu. Durch diese Anpassung der Symmetrie der Magnetisierspulen an die Symmetrie der Konvergenzeinrichtung wird ein starke Beeinflußbarkeit der Konvergenzeinrichtung bewirkt.A device for magnetizing the convergence device of a color picture tube consists of electrically excitable coils which can be arranged around the tube neck and have coil axes in the plane in which the convergence device is located. According to the invention, the coil cross sections in the convergence device plane are larger than those perpendicular to it. This adaptation of the symmetry of the magnetizing coils to the symmetry of the convergence device results in a strong influence on the convergence device.

Description

Die Erfindung betrifft eine Vorrichtung zum Magnetisieren einer Konvergenzeinrichtung für Inline-Farbbildröhren und Verfahren zum Konvergenzableich mit dieser Vorrichtung.The invention relates to a device for magnetizing a convergence device for inline color picture tubes and methods for convergence with this device.

Farbbildröhren besitzen üblicherweise einen Bildschirm mit Leuchtstoffen dreier unterschiedlicher Farben. Jede Leuchtstoffart wird von einem von drei von einem Elektronenkanonensystem ausgesandten Elektronenstrahlen zum Leuchten angeregt. Bei Farbbildröhren bei denen die drei Elektronenkanonen des Elektronenkanonensystems in einer Ebene angeordnet sind spricht man von Inline-Farbbildröhren. Bei solchen Inlineröhren ist zwischen dem Elektronenkanonensystem und dem Leuchtschirm eine sogenannte Schattenmaske angebracht, durch deren schlitzförmige Öffnungen die Elektronenstrahlen auf die Leuchtstoffgebiete auftreffen. Zum einwandfreien Betrieb der Inline-Farbbildröhre ist es erforderlich, daß über die gesamte Maskenfläche alle drei Elektronenstrahlen sich jeweils in einem Maskenschlitz kreuzen. Um diese gemeinsame überkreuzung zu erzielen werden die Elektronenstrahlen im Elektronenkanonensystem durch statische Magnetfelder vorabgelenkt. Die Einstellung der dazu erforderlichen Magnetfelder nennt man Konvergenzeinstellung.Color picture tubes usually have a screen with phosphors of three different colors. Each type of phosphor is excited to glow by one of three electron beams emitted by an electron gun system. Color picture tubes in which the three electron guns of the electron gun system are arranged in one plane are referred to as inline color picture tubes. In such inline tubes, a so-called shadow mask is attached between the electron gun system and the luminescent screen, through the slit-shaped openings of which the electron beams strike the phosphor regions. For the inline color picture tube to operate properly, it is necessary for all three electron beams to cross each other in a mask slot over the entire mask area. In order to achieve this common crossover, the electron beams in the electron gun system are deflected by static magnetic fields. The setting of the magnetic fields required for this is called the convergence setting.

Das Prinzip einer solcher Konvergenzeinstellung ist in dem Artikel "Funkschau 1976", Heft 5 Seiten 59 und 60, beschrieben. Bei dem dort beschriebenen Prinzip werden zunächst die beiden äußeren der drei in einer Ebene liegenden Elektronenstrahlen konvergiert. Dazu werden die beiden äußeren Strahlen durch Vier-Pol-Felder synchron zueinander oder gegeneinader in horizontaler oder vertikaler Richtung verschoben. Durch Sechs-Pol-Felder sind die beiden äußeren konvergierten Elektronenstrahlen gemeinsam gegenüber dem mittleren Elektronenstrahl wiederum in horizontaler und vertikaler Richtung verschiebbar. Derartige Einstellbewegungen werden im folgenden als Grundvorablenkungsbewegungen bezeichnet. Andere Grundvorablenkungsbewegungen bestehen z.B. darin, daß jeweils ein äußererElektronenstrahl im wesentlichen unabhängig vom mittleren und dem anderen äußeren Elektronenstrahl in horizontaler und vertikaler Richtung einstellbar ist. Dadurch wird jederäußere Elektronenstrahl einzeln auf den mittleren Elektronenstrahl konvergiert.The principle of such a convergence setting is described in the article "Funkschau 1976", number 5 pages 59 and 60. In the principle described there, the two outer of the three electron beams lying in one plane are first converged. To do this, the two outer ones Beams by four-pole - shifted fields synchronously with one another or gegeneinader in horizontal or vertical direction. By six-Pol - fields the two outer electron beams converged are jointly displaceable relative to the center electron beam in turn in the horizontal and vertical directions. Such adjustment movements are referred to below as basic pre-deflection movements. Other basic deflection movements consist, for example, in that an outer electron beam can be adjusted in a horizontal and vertical direction essentially independently of the middle and the other outer electron beam. As a result, each outer electron beam is individually converged on the middle electron beam.

In dem erwähnten Funkschauartikel erfolgt die Konvergenzeinstellung durch Verdrehen vormagnetisierter Magnetringe, welche außen um den Hals der Röhre über dem Elektronenkanonensystem angeordnet sind. Aus-der DE-PS 961 735 ist es jedoch schon bekannt, zur Vorablenkung eines Elektronenstrahls ein permanentmagnetisches Material im Inneren des Röhrenhalses anzuordnen und dieses von außen gezielt auf-oder umzumagnetisieren. istIn the above-mentioned radio review article, the convergence is set by rotating pre-magnetized magnetic rings, which are arranged on the outside around the neck of the tube above the electron gun system. From DE-PS 961 735, however, it is already known to arrange a permanent magnetic material in the interior of the tube neck in order to deflect an electron beam and to magnetize or remagnetize it from the outside in a targeted manner. is

Es ist üblich geworden, nun zur Konvergenzeinstellung derartige im Inneren des Röhrenhalses, unter Umständen direkt am Elektronenkanonensystem befestigte hartmagnetische Materialien zu verwenden, welche von außen mittels einer Magnetisiervorrichtung auf-oder ummagnetisiert werden. Die Erfindung betrifft Magnetisiervorrichtungen der letzteren Art.It has become customary to use hard magnetic materials which are attached to the inside of the tube neck and which may be directly attached to the electron gun system and which are magnetized or remagnetized from the outside by means of a magnetizing device to adjust the convergence. The invention relates to magnetizing devices of the latter type.

Aus der DE-OS 28 28 710 sind Vorrichtungen und Verfahren bekannt, welche zum Auf- und Ummagnetisieren von hartmagnetischen Materialien zur Konvergenzeinstellung geeignet sind.DE-OS 28 28 710 discloses devices and methods which are suitable for magnetizing and remagnetizing hard magnetic materials for setting the convergence.

Die Figuren 11 und 12 zeigen die Abbildungen zweier Vorrichtungen, bei welchen jeweils acht Spulen radial um einen Röhrenhals angeordnet sind. Die Spulen werden jeweils untereinander so beschaltet, daß die zur Einstellung erforderlichen Zwei-, Vier- und Sechs-Pol-Felder erzielbar sind. Es hat sich gezeigt, daß mit derartigen Vorrichtungen nur geringen Vorablenkungen der Elektronenstrahlen möglich sind. In der DE-OS 28 32 666 ist in Figur 2 eine Magnetisiervorrichtung dargestellt, bei welcher die Magnetspulen in zwei Ebenen, in Strahlrichtung hintereinander angebracht sind. Dadurch kann die Anzahl der Spulen beträchtlich erhöht werden, was zu stärkeren erzielbaren Magnetfeldern und damit stärkerer Vorablenkung führt. Durch alle Ablenkfelder für Elektronenstrahlen wird jedoch nicht nur die Richtung des Elektronenstrahls, sonderen auch dessen Form verändert. Für die Strahlform der Elektronenstrahlen hat es sich als ungünstig erwiesen, die Vorablenkung in zwei verschiedenen Ebenen vorzunehmen.FIGS. 11 and 12 show the images of two devices in which eight coils are arranged radially around a tube neck. The coils are connected to each other so that the two, four and six-pole fields required for adjustment can be achieved. It has been shown that only small deflections of the electron beams are possible with such devices. In DE-OS 28 32 666 a magnetizing device is shown in Figure 2, in which the magnetic coils are arranged one behind the other in two planes in the beam direction. As a result, the number of coils can be increased considerably, which leads to stronger magnetic fields that can be achieved and thus greater pre-deflection. All deflection fields for electron beams not only change the direction of the electron beam, but also its shape. For the beam shape of the electron beams, it has proven to be unfavorable to carry out the preliminary deflection in two different planes.

Von einerKonvergenzeinrichtung wird jedoch nicht nur die Vorablenkungder Elektronenstrahlen zur Einstellung der Konvergenz vorgenommen, sondern Aufgabe diese Einrichtungen ist es ebenfalls, die Vorablenkung zur FarbreinheitEinstel- lung vorzunehmen. Zur Farbreinheitseinstellung ist es erforderlich, daß alle drei Elektronenstrahlen gemeinsam in horizontaler Richtung verschoben werden. Die dazu erforderlichen Zwei-Pol-Felder werden bei den vorangehend beschriebenen Magnetisiervorrichtungen durch entsprechende Schaltung der radial angeordneten, elektrisch erregbaren Magnetspulen zu erhalten. Abweichend davon beschreibt die DE-OS 28 32 667 eine Magnetisiervorrichtung, bei der die Farbreinheitseinstellung durch um den Röhrenhals angeordneteHowever, not only the Vorablenkun g is the electron made to adjust the convergence of a convergence device, but task these facilities, it is also to make the pre-deflection for color purity E instel- development. To adjust the color purity, it is necessary that all three electron beams are shifted together in the horizontal direction. The two-pole fields required for this are obtained in the magnetizing devices described above by appropriate switching of the radially arranged, electrically excitable magnetic coils. Deviating from this, DE-OS 28 32 667 describes a magnetizing device in which the color purity setting is arranged around the tube neck

Leiterschleifen vorgenommen wird. Die dort in Figur 6 in dargestellte Vorrichtung zeigt radial zwei Ebenen angeordnete Magnetspulen und in einer dritten Ebene in Strahlrichtung vor den beiden andern Ebenen angeordnete Leiterbahnen zur Farbreinheitßeinstellung. Auch hier wieder ergibt sich das Problem der Strahlverformung durch die im verschiedenen Ebenen vorgenommene Vorablenkung der Elektronenstrahlen.Conductor loops is made. The there in Figure 6 The device shown in FIG. 2 shows radially arranged magnetic coils and in a third plane in the beam direction before the other two planes arranged conductor tracks for color purity adjustment. Again, the problem of beam deformation arises from the pre-deflection of the electron beams in different planes.

Von der geschilderten Problematik ausgehend liegt der Er- findung die Aufgabe zugrunde, eine Magnetisiervorrichtung für den beschriebenen Zweck anzugeben, die eine sehr starke Beeinflußbarkeit der Elektronenstrahlen bei möglichst geringer Strahlformveränderung zuläßt.On the basis of the problems described , the invention is based on the object of specifying a magnetizing device for the purpose described, which allows the electron beams to be influenced very strongly with the least possible change in beam shape.

Die Lösung der Aufgabe ist durch den ersten Anspruch gegeben. Durch Querschnitte der Magnetspulen mit ungleichen Durchmessern ist die Form der Spulen an die Form der Konvergeneinrichtung angepaßt. Dadurch, daß alle Spulenachsen in der Ebene der Konvergenzeinrichtung liegen, ist eine möglichst geringe Strahlformveränderung gewährleistet. Durch die Anpassung der Spulenform an die Form der Konver- genzeinrichtung ist es möglich, sehr starke Magnetisierfelder zu erzielen. Dies erlaubt Aufbauten der Magnetisiervorrichtung, bei denen jeweils die Spulen, die zu Erzielung eines gewissen Mehrpolfeldes erforderlich sind, entlang von Kreisen mit unterschiedlichen Radien um den Röhrenhals angeordnet werden können. Es hat sich herausgestellt, daß mit derartigen Vorrichtungen sogar durch ein um den Röhrenhals herum angeordnetes Ablenksystem hindurch magnetisiert werden kann. Neuartige Ablenksysteme erstrecken sich nämlich über einen so langenBereich des Halses, daß sie noch einen großen Teil des Elektronenkanonensystems überdecken. Daher ist es bisher notwendig, die Konvergenz und Farbreinheitseinstellung vorzunehmen, bevor das Ablenksystem an der Röhre befestigt wird. Die Felder einer vorgeschlagenen Magnetisiervorrichtung sind jedoch so stark, daß sogar durch das schon aufgesetzte Ablenksystem hindurch das im Röhrenhals angebrachte hartmagnetische Material auf- oder ummagnetisiert werden kann.The solution to the problem is given by the first claim. The shape of the coils is adapted to the shape of the converging device through cross sections of the magnetic coils with unequal diameters. The fact that all coil axes lie in the plane of the convergence device ensures that the beam shape changes are as small as possible. By adjusting the coil shape to the shape of convergence - genzeinrichtung it is possible to achieve very strong Magnetisierfelder. This allows structures of the magnetizing device in which the coils, which are required to achieve a certain multipole field, can be arranged along circles with different radii around the tube neck. It has been found that devices of this type can even be magnetized through a deflection system arranged around the tube neck. Novel deflection systems extend over such a long area of the neck that they still cover a large part of the electron gun system. Therefore, so far it has been necessary to converge and adjust color purity before attaching the deflection system to the tube. However, the fields of a proposed magnetizing device are so strong that the hard magnetic material attached in the tube neck can be magnetized or remagnetized even through the already installed deflection system.

Die Erfindung wird im folgenden anhand von durch vier Figuren veranschaulichten Ausführungsbeispielen näher erläutert.The invention is explained in more detail below on the basis of exemplary embodiments illustrated by four figures.

Es zeigen:

  • Figur 1: Anpassung der Spulenform an die Form der Konvergenzeinrichtung.
  • Figur 2: Ausführungsform einer erfindungsgemäßen Magnetisiervorrichtung mit radial um den Röhrenhals angeordneten Magnetspulen.
  • Figur 3: Eine zweite Ausführungsform einer erfindungsgemäßen Magnetisiervorrichtung, mit der eine Beeinflussung jeweils eines äußeren Elektronenstrahles im wesentlichen unabhängig vom mittleren oder dem anderen äußeren Elektronenstrahl erzielbar ist.
  • Figur 4: Aufsicht auf einen Spulenwickelkörper, wie er Bestandteil der Vorrichtung gemäß Figur 3 ist.
Show it:
  • Figure 1: Adaptation of the coil shape to the shape of the convergence device.
  • Figure 2: Embodiment of a magnetizing device according to the invention with magnet coils arranged radially around the tube neck.
  • Figure 3: A second embodiment of a magnetizing device according to the invention, with which an influence of an outer electron beam can be achieved essentially independently of the middle or the other outer electron beam.
  • Figure 4: Top view of a coil winding body, as it is part of the device according to Figure 3.

In Figur 1 ist mit 1 die Konvergenzeinrichtung aus aufzu magnetisierendem hartmagnetischem Material bezeichnet. Es sei dies ein im Inneren eines Röhrenhalses angeordneter gesprengter Magnetring. Dieser Ring ist konzentrisch um den mittleren Elektronenstrahl angeordnet. Die Elektronenstrahlrichtung ist mit z bezeichnet. Der Ring befindet sich in der Konvergenzeinrichtungsebene, welche senkrecht zur z-Achse steht. Statt eines Ringes sind auch schon andere Ausführungsformen einer Konvergenzeinrichtung aus magnetisierbarem Material angegeben worden, bei denen sich das magnetisierbare Material jedoch immer in einer wie vorstehend angegeben definierten Konvergenzeinrichtungsebene befindet. Figur 1 zeigt eine Darstellung des Drahtringes im Blickrichtung der Konvergenzeinrichtungsebene, weswegen der Drahtring 1 nur als Strich erscheint. In Blickrichtung vor dem Drahtring ist eine elektrisch erregbare Magnetspule 2 mit rechteckigem Querschnitt eingezeichnet, deren Längsachse in Blickrichtung liegt. Der lange Durchmesser des rechteckigen Querschnitts liegt in der Konvergenzeinrichtungsebene. Es ist ersichtlich, daß die Spulenform gut an die Form der Konvergenzeinrichtung angepaßt ist. Im Vergleich zur rechteckigen Spule 2 ist gestrichelt der Innendurchmesser einer runden Spule 3 eingezeichnet, welche diesselbe Fläche umschließt wie die rechteckige Spule. Aus der Figur ist leicht vorstellbar, daß mit der rechteckigen Spule über die ganze Konvergenzeinrichtung ein homogenes Feld erzielbar ist. Bei der runden Spule dagegen werden sich Randbereiche der Konvergenzeinrichtung im inhomogenen Randfeld der Spule befinden. Um ebenfalls ein homogenes Feld über die gesamte Abmessung der Konvergenzeinrichtung zu gewährleisten, mußte der Durchmesser der runden Spule 3 erheblich vergrößert werden. Dadurch wäre aber bei gleichem Stromfluss durch die Spule nur ein erheblich schwächeres Feld erzielbar. Der maximale Stromfluss ist durch die zur Verfügung stehenden Spannungsquellen begrenzt. Wegen der besseren Anpassung der Spulenform an die Form der Konvergenzeinrichtung ist daher bei Vorliegen einer bestimmten Spannungsquelle eine erheblich höhere Feldstärke erzielbar. Wesentlich ist jedoch, daß sich alle aufzumagnetisierenden Teile der Konvergenzeinrichtung in einer senkrecht auf der Strahlachse bestehenden Ebene finden.In Figure 1, 1 denotes the convergence device made of magnetically hard magnetic material. This is an explosive magnetic ring arranged inside a tube neck. This ring is arranged concentrically around the middle electron beam. The electron beam direction is designated z. The ring is located in the convergence plane, which is perpendicular to the z-axis. Instead of a ring, other embodiments of a convergence device made of magnetizable material have also been specified in which however, the magnetizable material is always in a convergence device plane as defined above. Figure 1 shows a representation of the wire ring in the direction of view of the convergence device level, which is why the wire ring 1 appears only as a line. In the viewing direction in front of the wire ring, an electrically excitable magnet coil 2 with a rectangular cross section is shown, the longitudinal axis of which lies in the viewing direction. The long diameter of the rectangular cross section lies in the convergence plane. It can be seen that the coil shape is well adapted to the shape of the convergence device. In comparison to the rectangular coil 2, the inner diameter of a round coil 3 is drawn in with a broken line, which surrounds the same surface as the rectangular coil. It is easy to imagine from the figure that a homogeneous field can be achieved with the rectangular coil over the entire convergence device. In the case of the round coil, on the other hand, edge regions of the convergence device will be located in the inhomogeneous edge field of the coil. In order also to ensure a homogeneous field over the entire dimension of the convergence device, the diameter of the round coil 3 had to be increased considerably. This would, however, only achieve a considerably weaker field with the same current flow through the coil. The maximum current flow is limited by the available voltage sources. Because of the better adaptation of the coil shape to the shape of the convergence device, a considerably higher field strength can therefore be achieved when a certain voltage source is present. It is essential, however, that all parts of the convergence device to be magnetized are located in a plane existing perpendicular to the beam axis.

Es wird nun zunächst die Wirkungsweise einer Magnetisiereinrichtung gemäß Figur 2 beschrieben, worauf Angaben der geometrischen Abmessungen und der elektrischen Eigenschaften der Spulen folgen. Um den Hals 6 sind in einem ersten Kreis sechs Spulen 7 mit radialen, jeweils unter 600 zueinander stehenden Spulenachsen angeordnet. Zwei der Spulenachsen befinden sich auf der x-Achse. Diese Spulen werden so betrieben, daß sie ein Sechs-Pol-Feld erzeugen, durch welches die beiden äußeren Elektronenstrahlen gemeinsam in y-Richtung gegen den mittleren Elektronenstrahl verschiebbar sind. In einem zweiten Radius folgen sechs weitere Spulen 8, ebenfalls mit jeweils um 600 gegeneinander versetzten, radial angeordneten Spulen. Zwei der sechs Achsen der Spulen befinden sich auf der y-Achse. Diese sechs Spulen werden gemeinsam so betrieben, daß sie ein Secls-Pol-Feld erzeugen, durch welches die beiden äußeren Elektronenstrahlen gemeinsam gegenüber dem mittleren Elektronenstrahl in x-Richtung verschiebbar sind. In einem dritten, noch gröacht ßeren Radius folgen weitere Spulen, deren radial angeordnete Spulenachsen jeweils Winkel von 450 einschließen. vier Die Spulen, deren Achsen mit der x- bzw. y-Achse zusammenfallen, sind mit 9 bezeichnet und gestrichelt dargestellt. Diejenigen Spulen, deren Spulenachsen jeweils 45° gegen die x- und y-Achse versetzt sind, sind mit 10 bezeichnet und gesternt gezeichnet. Die vier Spulen 9 werden so betrieben, daß ein Vier-Pol-Feld erzeugt wird, mit dem die bei den äußeren Strahlen gegeneinander in y-Richtung verschiebbar sind, welches jedoch den mittleren Elektronenstrahl unbeeinflußt läßt. Die vier Spulen 10 werden dagegen so betrieben, daß ein Vier-Pol-Feld entsteht, durch das die beiden äußeren Elektronenstrahlen gegeneinander in x-Richtung verschoben werden, das jedoch den mittleren Elektronenstrahl ebenfalls unbeeinflußt läßt, Die Anordnung der Spulen für die Vier-Fol-Felder, kann auch entlang von zwei Kreisradien analog den Sechs-Fol-Spulen erfolgen.The mode of operation of a magnetizing device according to FIG. 2 will now be described, followed by information on the geometric dimensions and the electrical properties of the coils. Around the neck 6 six coils 7 are disposed with radial, in each case less than 60 0 to each other coil axes in a first circuit. Two of the coil axes are on the x axis. These coils are operated in such a way that they generate a six-pole field, through which the two outer electron beams can be displaced together in the y direction against the central electron beam. In a second radius followed by six more coils 8, also having in each case by 60 0 offset against each other, radially disposed coils. Two of the six axes of the coils are on the y-axis. These six coils are operated together in such a way that they generate a Secls-pole field, by means of which the two outer electron beams can be displaced together in the x direction with respect to the central electron beam. In a third, still gröacht ßeren radius followed by further coils whose radially disposed coil axes each include an angle of 45 0th four The coils, the axes of which coincide with the x and y axes, are designated by 9 and shown in dashed lines. Those coils, the coil axes of which are each offset by 45 ° with respect to the x and y axes, are designated by 10 and drawn yesterday. The four coils 9 are operated in such a way that a four-pole field is generated with which the outer beams can be displaced in the y direction relative to one another, but which leaves the central electron beam unaffected. The four coils 10, on the other hand, are operated in such a way that a four-pole field is created, by means of which the two outer electron beams are displaced relative to one another in the x direction, but which also leaves the central electron beam unaffected, The arrangement of the coils for the four-fol Fields, can also be done along two circular radii analogous to the six-fol coils.

Alle bisher beschriebenenAll described so far

zur Konvergenzeinstellung erforderlichen Spulen waren entlang von Kreisen mit unterschiedlichen Radien angeordnet. Zur Farbreinheitseinstellung sind jedoch langgestreckte Spulen erforderlich, die am Ort aller drei Elektronenstrahlen ein gleiches, homogenes Feld gewährleisten. Die Achsen der Farbreinheitspulen fallen mit der y-Achse zusammen. Die zwei, in y-Richtung über und unter den bisher beschriebenen Spulen angeordneten Farbreinheitspulen werden so betrieben, daß ein Zwei-Pol-Feld entsteht, welches alle drei Elektronenstrahlen gemeinsam um gleiche Beträge in x-Richtung verschiebt. Die Farbreinheitspulen sind mit 11 bezeichnet. Entsprechend zur gemeinsamen Verschiebung aller drei Elektronenstrahlen in x-Richtung wird zur Rastereinstellung oft eine gemeinsame Vorablenkung aller drei Elektronenstrahlen in y-Richtungerwünscht. Zur diesem Zweck sind im Figur 2 noch zwei zusätzliche Rasterkorrekturspulen 12 eingezeichnet, deren Achsen mit der x-Achse zusammenfallen, und die sich in x-Richtung links und rechts neben den Konvergenzspulen befinden. Die beiden Spulen 12 werden ebenfalls so betrieben, daß ein Zwei-Pol-Feld entsteht.coils required for convergence adjustment were arranged along circles with different radii. However, elongated coils are required to adjust the color purity, which ensure an identical, homogeneous field at the location of all three electron beams. The axes of the color purity coils coincide with the y-axis. The two color purity coils arranged in the y direction above and below the coils described so far are operated in such a way that a two-pole field is created which shifts all three electron beams together by the same amount in the x direction. The color purity coils are designated 11. Corresponding to the joint displacement of all three electron beams in the x direction, a common preliminary deflection of all three electron beams in the y direction is often desired for the raster adjustment. For this purpose, two additional raster correction coils 12 are shown in FIG. 2, the axes of which coincide with the x-axis, and which are located in the x-direction to the left and right of the convergence coils. The two coils 12 are also operated so that a two-pole field is created.

Alle Spulen besitzen rechteckigen Querschnitt. Die langen Durchmesser der Farbreinheitspulen 11 und der Rasterkorrekturspulen 12 sind etwa doppelt bis drei Mal so lang wie der Durchmesser der Konvergenzeinrichtung in x-oder y-Richtung. Die langen Durchmesser der in Kreisen angeordneten Konvergenzspulen sind jeweils so groß, daß alle auf einem Kreis befindlichen Spulen gerade diesen Kreis ausfüllen. Der kleine Durchmesser alle Spulen beträgt etwa 1 cm. Die Farbreinheit und Rasterkorrekturspulen besitzen jeweils 95 Windungen eines 0,5 2 Kupferdrahtes. Die anderen Spulen besitzen jeweils 150 Windungen eines 0,252 All coils have a rectangular cross-section. The long diameters of the color purity coils 11 and the raster correction coils 12 are approximately twice to three times as long as the diameter of the convergence device in the x or y direction. The long diameters of the convergence coils arranged in circles are each so large that all the coils on a circle fill this circle. The small diameter of all coils is about 1 cm. The color purity and raster correction coils each have 95 turns of a 0.5 2 copper wire. The other coils each have 150 turns of a 0.25 2

Kupferdrahtes. Zu einer Grundvorablenkungsbewegung gehörige Spulen werden jeweils in Serie geschaltet und über einen Kondensator von ca. 200 µF mit maximal ± 500 V erregt. Die erzielbaren Vorablenkungen führen zu Verschiebungen von bis zu ± lsmmauf dem Bildschirm der Farbbildröhre.Copper wire. Coils belonging to a basic deflection movement are connected in series and excited with a capacitor of approx. 200 µF with a maximum of ± 500 V. The achievable deflections lead to displacements of up to ± ls mm on the screen of the color picture tube.

Mit der bisher beschriebenen Magnetisiervorrichtung ist es möglich, die beiden äußeren Elektronenstrahlen gemeinsam gegeneinander oder miteinander, bei unbeeinflußtem mittlerem Elektronenstrahl vorabzulenken. Das Einprägen des Eingestellten Magnetfeldes in das Material der auf-und ummagnetisierbaren Konvergenzeinrichtung erfolgt nach einem Verfahren, wie es auch zurAnwendung bei bisher beschriebenen Magnetisiervorrichtungen üblich ist. Auf das Einprägen des eingestellten Magnetfeldes in das permanentmagnetische Material der Konvergenzeinrichtung wird daher hier nicht näher eingegangen.With the magnetizing device described so far, it is possible to deflect the two outer electron beams together or against one another, with the central electron beam unaffected. The set magnetic field is impressed into the material of the converging device which can be magnetized and remagnetized using a method which is also customary for use in the magnetizing devices previously described. The imprinting of the set magnetic field into the permanent magnetic material of the convergence device is therefore not discussed in more detail here.

Figur 3 stellt eine weitere Ausführungsform einer erfindungsgemäßen Magnetisiervorrichtung dar, mit der jeweils ein äußerer Elektronenstrahl im wesentlichen unabhängig vom mittleren und dem anderen äußeren Elektronenstrahl eingestellt werden kann. Als Konvergenzeinrichtung ist wieder ein permanentmagnetischer Drahtring 3 in einem Röhrenhals 6 dargestellt. Alle Abmessungen der Figur 3 entsprechen einer Magnetisiervorrichtung, wie sie zum Magnetisieren eines im Innern des Halses einer sogenannten Dickhalsröhre mit ca. 36mmHalsaußendurchmesser, angeordneten permanentmagnetischen Materials verwendet wird. Aufbau und Wirkungsweise der Farbreinheitskorrekturspulen 11 und Rasterkorrekturspulen 12 entsprechen völlig denen der in Figur 2 beschriebenen. In Figur 3 sind jedoch nur rechts und oben die bewikkelten Magnetspulen eingezeichnet, während unten und links lediglich die Kunststoffwickelkörper dargestellt sind. Die Verschiebung des in Blickrichtung rechten Elektronenstrahls 4 in x-Richtung sei zunächst beschrieben. Zwei Spulen 13, deren Spulenachsen parallel zur x-Achse oder in einem und, die in y-Richtung übereinander, j jeweils in gleichen Abständen über und unter der x-Achse angeordnet sind, werden so betrieben, daß die Polung der einen Spule jeweils genau entgegengesetzt ist zur Polung der anderen Spule. Dadurch treten Magnetlinien aus einer Spule aus und treten nach einemüber den Ring, welcher gestrichelt in Figur 3 auf der rechten Seite eingezeichnet ist,wieder in die andere Spule ein. Der Feldverlauf am Ort des rechten äußeren Elektronenstrahls verläuft daher im wesentlichem it y-Richtung, was eine Verschiebung dieses Elektronenstrahls in x-Richtung bewirkt. Da das Magnetfeld quadratisch zur Entfernung von den Spulen abfällt, werden der mittlere und der andere äußere Elektronenstrahl kaum beeinflußt. Die Verschiebung eines äußeren Elektronenstrahles in y-Richtung ist anhand des linken äußeren Elektronenstrahles der Figur 3 dargestellt. Eine Spule, deren Achse mit der x-Achse zusammenfällt, wird elektrisch erregt, wodurch die Spule einen magnetischen Nord- und Südpol ausbildet. In bekannter Weise schließen sich die Magnetlinien einer solchen Spule über das Außenfeld der Spule. Dadurch befindet sich, wie gestrichelt eingezeichnet, der linke äußere Elektronenstrahl in einem sich in x-Richtung erstreckenden Magnetfeld, wodurch Vorablenkung in y-Richtung erfolgt. Die Spulenanordnungen zur Ablenkung eines äußeren Elektronenstrahles jeweils in x- oder in y-Richtung wurden bisher jeweils nur für eine Seite der Magnetisiervorrichtung erläutert. Die Magnetisiervorrichtung ist jedoch in ihrer Wirkungsweise und in ihrem Spulenaufbau symmetrisch zur x- und zur y-Achse, sodaß beide äußeren Elektronenstrahlen im wesentlichen unabhängig voneinander und unabhängig vom mittleren Elektronenstrahl einzeln in x- oder in y-Richtung vorabgelenkt werden können.FIG. 3 shows a further embodiment of a magnetizing device according to the invention, with which an outer electron beam can be set essentially independently of the middle and the other outer electron beam. A permanent magnetic wire ring 3 in a tube neck 6 is again shown as a convergence device. All dimensions of FIG. 3 correspond to a magnetizing device, such as is used to magnetize a permanent magnetic material arranged in the inside of the neck of a so-called thick-necked tube with an outside diameter of approximately 36 mm. The structure and mode of operation of the color purity correction coils 11 and raster correction coils 12 correspond entirely to those described in FIG. 2. In Figure 3, however, the developed magnetic coils are shown only on the right and above, while below and left only the plastic winding body are shown. The shift of the electron beam 4 on the right in the viewing direction in the x direction will first be described. Two coils 13, the coil axes of which are arranged parallel to the x-axis or in one and which are arranged one above the other in the y-direction, j each at equal intervals above and below the x-axis, are operated in such a way that the polarity of the one coil is accurate in each case is opposite to the polarity of the other coil. As a result, magnetic lines emerge from one coil and, after one, enter the other coil again via the ring, which is shown in broken lines in FIG. 3 on the right side. The field profile at the location of the right outer electron beam therefore essentially runs in the y direction, which causes a shift of this electron beam in the x direction. Since the magnetic field falls square to the distance from the coils, the middle and the other outer electron beam are hardly influenced. The shift of an outer electron beam in the y-direction is shown using the left outer electron beam of FIG. 3. A coil, the axis of which coincides with the x-axis, is electrically excited, as a result of which the coil forms a magnetic north and south pole. The magnetic lines of such a coil close in a known manner via the outer field of the coil. As a result, as shown in dashed lines, the left outer electron beam is in a magnetic field extending in the x direction, which results in pre-deflection in the y direction. The coil arrangements for deflecting an outer electron beam each in the x or y direction have so far only been explained for one side of the magnetizing device. However, the magnetizing device is symmetrical in its mode of operation and in its coil structure with respect to the x and y-axis, so that both outer electron beams can be deflected individually independently of one another and independently of the central electron beam in the x or y direction.

Figur 4 zeigt eine Aufsicht auf einen Wickelkörper, wie er in Figur 3 zum Aufbringen der Spulen für Rasterkorrektur und für die unabhängige Vorablenkung eines äußeren Elektronenstrahls in x- und y-Richtung Verwendung findet. Der Abstand des Wickelkörpers bzw. der daraus gefertigten Spule vom Röhrenhals 6 und von der Konvergenzeinrichtung 1 ist in Figur 4 ebenfalls dargestellt. Die elektrische Ausführungsder S ule 12 form entspricht der in Figur 2 beschriebenen.FIG. 4 shows a plan view of a winding body as used in FIG. 3 for applying the coils for raster correction and for the independent deflection of an external electron beam in the x and y directions. The distance between the winding body or the coil made therefrom from the tube neck 6 and from the convergence device 1 is also shown in FIG. The electrical design of the pillar 12 shape corresponds to that described in FIG.

Die dargestellten und beschriebenen Ausführungsformen einer erfindungsgemäßen Magnetisiervorrichtung sind zum Magnetisieren des im Inneren eines Röhrenhalses angeordneten permanentmagnetischen Materials einerKonvergenzeinrichtung geeignet. Genau diesselben Aufbauten, jedoch lediglich mit vergrößerten geometrischen Abmessungen, können verwendet werden, wenn außen um den Röhrenhals angeordnete permanentmagnetische Materialien auf- oder ummagnetisiert werden müssen, oder wenn zwar das permanentmagnetische Material im Innern des Röhrenhalses angeordnet ist, sich jedoch zwischen Röhrenhals und Magnetisiervorrichtung noch Teile eines Ablenksystems befinden. Es ist ein besondererVorteil der erfindungsgemäßen Magnetisiervorrichtungen, daß auch noch durch Teile eines Ablenksystems hindurch im Innern eines Röhrenhalses angeordnetes permanentmagnetisches Material auf- und ummagnetisiert werden kann.The illustrated and described embodiments of a magnetizing device according to the invention are suitable for magnetizing the permanent magnetic material of a converging device arranged inside a tube neck. Exactly the same structures, but only with enlarged geometric dimensions, can be used if permanent magnetic materials arranged around the outside of the tube neck have to be magnetized or remagnetized, or if the permanent magnetic material is arranged inside the tube neck, but still between the tube neck and the magnetizing device Parts of a deflection system. It is a particular advantage of the magnetizing devices according to the invention that permanent magnetic material arranged inside parts of a deflection system inside a tube neck can also be magnetized and remagnetized.

Claims (11)

1) Vorrichtung zum Magnetisieren der permanentmagnetischen Konvergenzeinrichtung einer Inline-Farbbildröhre, bei der am Hals der Röhre in einer senkrecht zur Röhrenachse liegenden Ebene, hier Konvergenzeinrichtungsebene genannt, befindliche Permanentmagneten mittels aus um den Hals der Röhre angeordneten und aus mit ihren magnetischen Achsen in der Konvergenzeinrichtungsebene angeordneten elektrisch erregbaren Spulen auf- oder ummagnetisiert werden, durch welches Magnetisieren die Elektronenstrahlen in der Röhre in verschiedenen Grundvorablenkungsbewegungen so lange gegeneinander vorabgelenkt werden, bis sie konvergieren,
dadurch gekennzeichnet, daß die Spulen (2) Querschnitte besitzen, mit Durchmessern, die in der Konvergenzeinrichtungsebene größer sind als senkrecht dazu und daß die Spulenachsen in der Konvergenzeinrichtungsebene liegen.1) Device for magnetizing the permanent magnetic convergence device of an inline color picture tube, in which permanent magnets located at the neck of the tube in a plane perpendicular to the tube axis, here called the convergence device plane, by means of arranged around the neck of the tube and with their magnetic axes in the convergence device plane arranged electrically excitable coils are magnetized or remagnetized, by means of which magnetizing the electron beams in the tube are deflected in different basic deflection movements until they converge,
characterized in that the coils (2) have cross sections with diameters which are larger in the plane of the convergence device than perpendicular thereto and that the coil axes lie in the plane of the convergence device. 2) Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß der Querschnitt der Spulen (2) rechteckig ist.2) Device according to claim 1, characterized in that the cross section of the coils (2) is rectangular. 3) Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß alle Spulen, die zum Erzielen einer bestimmten Grundvorablenkungsbewegung erregt werden müssen, unabhängig von allen anderen Spulen erregbar sind.3) Device according to claim 1, characterized in that all coils that must be excited to achieve a certain basic deflection movement can be excited independently of all other coils. 4) Verfahren zum gemeinsamen Einstellen der drei durch die Elektronenkanonen einer Inline-Farbbildröhre erzeugten Eleketronenstrahlen in der Richtung senkrecht zur Ebene der Elektronenkanonen (y-Richtung) mittels einer Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zwei Magnetspulen (12) je eine zu zwei Seiten des Halses, mit ihren magnetischen Achsen in der senkrecht zur y-Richtung, in der Konvergenzeinrichtungsebene liegenden x-Achse gemeinsam erregt werden.4) Method for jointly adjusting the three electron beams generated by the electron guns of an inline color picture tube in the direction perpendicular to the plane of the electron guns (y direction) by means of a device according to one of claims 1 to 3, characterized in that two magnetic coils (12) one on two sides of the neck, with their magnetic axes in the x-axis perpendicular to the y-direction and in the plane of convergence, are excited together. 5) Verfahren zum gemeinsamen Einstellen der drei durch die Elektronenkanonen einer Inline-Farbbildröhre erzeugten Elektronenstrahlen in x-Richtung mittels einer Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zwei Magnetspulen (11), je eine zu zwei Seiten des Halses, mit in der y-Achse liegenden Achsen, gemeinsam erregt werden.5) Method for jointly adjusting the three electron beams generated by the electron guns of an inline color picture tube in the x direction by means of a device according to one of claims 1 to 3, characterized in that two magnetic coils (11), one on two sides of the neck, with axes lying in the y-axis, are excited together. 6) Verfahren zumgleichsinnigen Einstellen der beiden äußeren der durch die drei Elektronenkanonen einer Inline-Farbbildröhre erzeugten Elektronenstrahlen in x-Richtung mittels einer Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß sechs gleiche, in jeweils gleichem Abstand vom Hals angeordnete Magnetspulen (8), deren Achsen jeweils Winkel von 60° einschließen, mit zwei der Achsen auf der y-Achse, gemeinsam erregt werden.6) Method for adjusting the two outer electron beams generated by the three electron guns of an inline color picture tube in the x direction by means of the same direction A device according to one of claims 1 to 3, characterized in that six identical magnetic coils (8), each arranged at the same distance from the neck, the axes of which each enclose angles of 60 °, are excited together with two of the axes on the y-axis will. 7) Verfahren zum gleichsinnigen Einstellen der beiden äußeren der durch die drei Elektronenkanonen einer Inline-Farbbildröhre erzeugten Elektronenstrahlen in y-Richtung mittels einer Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß sechs, gleiche, in jeweils gleichem Abstand vom Hals angeordnete Magnetspulen (7), deren Achsen jeweils Winkel von 60° einschließen, mit zwei der Achsen auf der x-Achse, gemeinsam erregt werden.7) Method for adjusting the two outer of the electron beams generated by the three electron guns of an inline color picture tube in the y direction by means of a device according to one of claims 1 to 3, characterized in that six, the same, each arranged at the same distance from the neck Solenoid coils (7), the axes of which each enclose angles of 60 °, are excited together with two of the axes on the x-axis. 8) Verfahren zum gegensinnigen Einstellen der beiden äußeren der durch die drei Elektronenkanonen einer Inline-Farbbildröhre erzeugten Elektronenstrahlen in y-Richtung mittels einer Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß vier gleiche, in jeweils gleichem Abstand vom Hals angeordnete Magnetspulen (9), derenAchsen mit der x-bzw. y-Achse zusammenfallen, gemeinsam erregt werden.8) Method for adjusting the two outer of the electron beams generated by the three electron guns of an inline color picture tube in opposite directions in the y direction by means of a device according to one of claims 1 to 3, characterized in that four identical magnet coils arranged at the same distance from the neck (9), whose axes with the x or. y-axis coincide, be excited together. 9) Verfahren zum gegensinnigen Einstellen der beiden äußeren der durch die drei Elektronenkanonen einer Inline-Farbbildröhre erzeugten Elektronenstrahlen in x-Richtung mit- tels einer Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß vier gleiche, in jeweils gleichem Abstand vom Hals angeordnete Magnetspulen (10), dernAchsen mit der x-bzw y-Achse Winkel von 45° einschließen, gemeinsam erregt werden.9) Method for adjusting the two outer of the electron beams generated by the three electron guns of an inline color picture tube in opposite directions in the x direction by means of a device according to one of claims 1 to 3, characterized in that four equal, each at the same distance from the neck arranged magnetic coils (10), the axes of which enclose angles of 45 ° with the x and y axes are excited together. 10) Verfahren zum Einstellen eines äußeren Elektronenstrahls in y-Richtung im wesentlichen unabhängig vom mittleren und dem anderen äußeren Elektronenstrahl mittels einer Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß je eine Magnetspule (14) mit ihrer Achse auf der x-Achse zu beiden Seiten des Halses (6) ngeordnet ist, von denen jeweils nur die Spule auf der Seite des einzustellenden Elektronenstrahls erregt wird.10) Method for adjusting an outer electron beam in the y direction substantially independently of the middle and the other outer electron beam by means of a device according to one of claims 1 to 3, characterized in that each has a magnetic coil (14) with its axis on the x- Axis is arranged on both sides of the neck (6), of which only the coil on the side of the electron beam to be set is excited. 11) Verfahren zum Einstellen eines äußeren Elektronestrahls in x-Richtung im wesentlichen unabhängig vom mittleren und dem anderen äußeren Elektronenstrahl mittels einer Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß je zwei Magnetspulen (13) mit Längsachsen in x-Richtung oder in einem geringen Winkel dazu zu beiden Seiten des Halses (6) in y-Richtung dicht übereinanderliegen, von denen jeweils die zwei Spulen auf der Seite des einzustellenden Elektronehstrahls so erregt werden, daß ihre Polung gegensinnig ist.11) Method for adjusting an outer electron beam in the x direction substantially independently of the middle and the other outer electron beam by means of a device according to one of claims 1 to 3, characterized in that two magnetic coils (13) with longitudinal axes in the x direction or at a slight angle to both sides of the neck (6) in the y-direction, one above the other, each of which the two coils on the side of the electron beam to be adjusted are excited so that their polarity is opposite.
EP80107753A 1979-12-12 1980-12-09 Magnetizing device for the convergence assembly of in-line colour picture tubes Expired EP0030704B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2949851 1979-12-12
DE2949851A DE2949851C2 (en) 1979-12-12 1979-12-12 Device for magnetizing a convergence device for inline color picture tubes

Publications (3)

Publication Number Publication Date
EP0030704A2 true EP0030704A2 (en) 1981-06-24
EP0030704A3 EP0030704A3 (en) 1982-03-03
EP0030704B1 EP0030704B1 (en) 1985-03-27

Family

ID=6088181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80107753A Expired EP0030704B1 (en) 1979-12-12 1980-12-09 Magnetizing device for the convergence assembly of in-line colour picture tubes

Country Status (6)

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US (1) US4395692A (en)
EP (1) EP0030704B1 (en)
JP (1) JPS6057652B2 (en)
CA (1) CA1169116A (en)
DE (1) DE2949851C2 (en)
FI (1) FI70096C (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0090108B1 (en) * 1982-03-31 1986-06-11 International Business Machines Corporation Convergence unit for in-line colour cathode ray tube
JPS6222351A (en) * 1985-07-19 1987-01-30 Mitsubishi Electric Corp Auxiliary adjusting device for convergence

Citations (4)

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Publication number Priority date Publication date Assignee Title
FR2345805A1 (en) * 1976-03-25 1977-10-21 Philips Nv COLOR TELEVISION IMAGE TUBE
GB2000635A (en) * 1977-07-06 1979-01-10 Philips Nv Colour display tube and a method of manufacturing the same
GB2001803A (en) * 1977-07-26 1979-02-07 Rca Corp Magnetizing method for use with a cathode ray tube
GB2001830A (en) * 1977-07-26 1979-02-07 Rca Corp Static convergence apparatus

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Publication number Priority date Publication date Assignee Title
NL170683C (en) * 1975-04-01 1982-12-01 Philips Nv METHOD FOR MANUFACTURING A STATIC CONVERGENCE UNIT AND A COLOR IMAGE TUBE INCLUDING A CONVERGENCE UNIT, MANUFACTURED USING THAT METHOD
DE2722477A1 (en) * 1977-05-18 1978-11-23 Standard Elektrik Lorenz Ag COLOR TELEVISION SCREENS
US4159456A (en) * 1977-07-26 1979-06-26 Rca Corporation Magnetizing apparatus and method for use in correcting color purity in a cathode ray tube and product thereof
SU741349A1 (en) * 1978-11-21 1980-06-15 Львовский Ордена Ленина Политехнический Институт Magnetic deflection system
DE2907898A1 (en) * 1979-03-01 1980-09-11 Steingroever Erich Dr Ing MULTIPOLE DEVICE AND METHOD FOR MAGNETIZING RING-SHAPED PERMANENT MAGNETS

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FR2345805A1 (en) * 1976-03-25 1977-10-21 Philips Nv COLOR TELEVISION IMAGE TUBE
GB2000635A (en) * 1977-07-06 1979-01-10 Philips Nv Colour display tube and a method of manufacturing the same
GB2001803A (en) * 1977-07-26 1979-02-07 Rca Corp Magnetizing method for use with a cathode ray tube
GB2001830A (en) * 1977-07-26 1979-02-07 Rca Corp Static convergence apparatus
DE2832667A1 (en) * 1977-07-26 1979-02-08 Rca Corp METHOD FOR PRODUCING MAGNETIZED AREAS

Non-Patent Citations (1)

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Title
FUNKSCHAU (1976), Heft 5, Seiten 179, 180 *

Also Published As

Publication number Publication date
DE2949851C2 (en) 1982-09-09
CA1169116A (en) 1984-06-12
FI70096B (en) 1986-01-31
EP0030704B1 (en) 1985-03-27
JPS5693245A (en) 1981-07-28
DE2949851A1 (en) 1981-06-19
JPS6057652B2 (en) 1985-12-16
FI803861L (en) 1981-06-13
US4395692A (en) 1983-07-26
FI70096C (en) 1986-09-12
EP0030704A3 (en) 1982-03-03

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