EP0690468B1 - Electron beam deflection system for cathode ray tubes - Google Patents

Electron beam deflection system for cathode ray tubes Download PDF

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Publication number
EP0690468B1
EP0690468B1 EP94401501A EP94401501A EP0690468B1 EP 0690468 B1 EP0690468 B1 EP 0690468B1 EP 94401501 A EP94401501 A EP 94401501A EP 94401501 A EP94401501 A EP 94401501A EP 0690468 B1 EP0690468 B1 EP 0690468B1
Authority
EP
European Patent Office
Prior art keywords
coils
separator
electron
deflection system
beam deflection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94401501A
Other languages
German (de)
French (fr)
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EP0690468A1 (en
Inventor
Alain Dossot
Alain Vougny
Christophe Mathey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thomson Tubes and Displays SA
Original Assignee
Thomson Tubes and Displays SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Thomson Tubes and Displays SA filed Critical Thomson Tubes and Displays SA
Priority to EP94401501A priority Critical patent/EP0690468B1/en
Priority to AT94401501T priority patent/ATE157814T1/en
Priority to DE69405382T priority patent/DE69405382T2/en
Priority to TW083108174A priority patent/TW318254B/zh
Priority to US08/461,096 priority patent/US5592045A/en
Priority to PL95309456A priority patent/PL176432B1/en
Priority to MYPI95001806A priority patent/MY115363A/en
Priority to CN95107836A priority patent/CN1098588C/en
Priority to SG1995000779A priority patent/SG34242A1/en
Priority to KR1019950019204A priority patent/KR100393388B1/en
Priority to JP7167355A priority patent/JPH0850868A/en
Publication of EP0690468A1 publication Critical patent/EP0690468A1/en
Application granted granted Critical
Publication of EP0690468B1 publication Critical patent/EP0690468B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76—Deflecting by magnetic fields only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/82—Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements
    • H01J29/823—Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements around the neck of the tube
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
    • H01J29/702—Convergence correction arrangements therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/70—Electron beam control outside the vessel
    • H01J2229/703—Electron beam control outside the vessel by magnetic fields
    • H01J2229/7032—Conductor design and distribution
    • H01J2229/7035—Wires and conductors
    • H01J2229/7036—Form of conductor
    • H01J2229/7037—Form of conductor flat, e.g. foil, or ribbon type

Definitions

  • the invention relates to a system for deflecting electron beams for cathode ray tubes, and more particularly to the assembly of its constituent elements and to its attachment to the neck of the tube.
  • Such a deflection system generally consists of a pair of vertical deflection coils, of a pair of horizontal deflection coils, the two pairs being electrically isolated by a separator, generally made of plastic, which further improves the mechanical rigidity of the deflection device, of fixing the coils relative to each other and of adjusting the assembly on the neck of the tube.
  • the separator consists of a main body, in one or more parts, substantially in the form of a funnel, and a flexible rear part conforming to the neck of the tube and intended to fix the position of the deflection system along the longitudinal axis. tube; this fixing is generally effected by means of a clamping collar placed above the flexible rear part.
  • auxiliary coils known as modulation of the horizontal scanning speed; these coils are superimposed on the horizontal deflection field created by the main coils an auxiliary field so as to anticipate significant variations in the luminance signal and to modify the speed of the horizontal scanning accordingly. It is also known to advantageously arrange these auxiliary coils on the neck of the tube, the horizontal deflection coils of the deflection system sometimes sometimes partially or entirely covering them. It is also known to produce these auxiliary coils by etching on a support in the form of a rigid or flexible crown. Examples of such arrangements are described in European patent application EP484606.
  • the position of the auxiliary coils relative to the horizontal deflection coils must be adjusted so as to optimize their effect on the magnetic field of horizontal deviation.
  • the object of the present invention is to make the positioning and holding in place of the auxiliary coils automatic relative to the horizontal deflection coils, this in a simple and rapid manner.
  • the deflection system comprises a separator, the substantially cylindrical rear part of which is provided with polarization and / or positioning means and auxiliary coils coming to bear on the wall of the separator, and comprising one or more orifices intended to cooperate with the polarizing and positioning means located on the separator so as to operate the positioning of said auxiliary coils relative to the horizontal and vertical deflection coils in a predetermined position.
  • the auxiliary coils are advantageously held in position by a holding member which is joined to the body of the separator by clipping onto the polarizing and / or positioning means.
  • a beam deflection system for a cathode ray tube includes a pair of horizontal deflection coils and a pair of vertical deflection coils.
  • the two pairs of coils are arranged on either side of a separator, generally made of plastic material, having the function of ensuring the maintenance in positioning of one pair of coils relative to the other as well as the mechanical rigidity of the assembly while providing electrical insulation between the two pairs of coils;
  • the separator as shown in Figure 1 further comprises the means for fixing the deflection system on the neck of the tube: feet (1) allow to position the front part (5) while a flexible crown (2) allows fixing the rear part (4) on the neck of the tube with a clamp (3).
  • the main body 7 of the separator, on which the deflection coils are fixed, and the rear part 4 are separate and can be joined to one another by means which will be described more far.
  • the auxiliary coils used to modify the horizontal deflection field can be coils made of rigid wires or preferably coils engraved on a flexible support.
  • FIG. 3 shows the two coils 20 and 21 etched on a flexible support 27 and the power connector 28 by means of which the signal intended to modify the horizontal deflection field is sent to the coils.
  • the support 27 having by natural elasticity a tendency to return to a substantially flat shape, remains pressed against the internal wall of the separator. However, it must be maintained so that it does not come off following the manipulations that the deflection system will undergo, in particular when it is going to be adjusted and positioned on the neck of the cathode ray tube; for this, a holding member 4 will be fixed on the rear of the body 7 of the separator; this annular cap-shaped member, as shown diagrammatically in FIG.
  • each tab 40 has an opening 41 intended to surround one of the lugs located on the internal surface of the body 7 of the separator and to ensure the fastening by clipping of the parts 4 and 7.
  • a support 42 on which are arranged fixing members no shown, allows the attachment of the connector 28 for supplying the coils 20 and 21.
  • Figures 6 and 7 show sections along two planes, the first containing the axis Z, the second perpendicular to this axis, of the rear part of the deflection system once its various organs assembled.
  • the tabs 40 partially cover the coils 20 and 21 and hold them in position by clipping onto the lugs 12 to 15 located on the internal wall of the body 7 of the separator.
  • the ring 4 must have at least three tabs 40; in a preferred embodiment the ring 4 comprises four legs 40 arranged symmetrically with respect to the XZ and YZ planes.
  • An advantageous embodiment consists in ensuring that the ring 4 allows the fixing of the rear part of the deflection system on the neck of the tube.
  • the ring has on its periphery flexible legs 60 extending in a direction opposite to that of the legs 40; as shown in FIG. 1, a ring 3 covers these tabs and fixes by clamping the rear of the separator on the neck of the tube.
  • the invention is not limited to the positioning of the auxiliary coils inside the separator, it can be applied in the same way to positioning on the external wall, provided that a support 27 is closed, or made closed after having joined edges 29 and 30, for example using adhesive tape; the teeth and the pins are then arranged on the external wall of the rear part of the separator.
  • the legs 40 cover the support 27 and ensure the fixing by clipping on the lugs, these lugs then being arranged on a crown of diameter greater than that of the surface on which the lugs are arranged.

Abstract

The horizontal (52) and vertical coils (51) are electrically isolated on a structure and electronically deflect electronic beams. There are also two auxiliary coils (20,21) which modulate sweep movement. The rear section of the structure (4) has flexible protruding sections (12,15) which contact a matching section (60) placed in the CRT structure. The coil structure click fits in place, and the central structure (27) is held firmly in position face to face with the rear section structure, so that any further flexing will not release the coil. <IMAGE>

Description

L'invention se rapporte à un système de déviation des faisceaux électroniques pour tube à rayons cathodiques, et plus particulièrement à l'assemblage de ses éléments constitutifs et à sa fixation sur le col du tube.The invention relates to a system for deflecting electron beams for cathode ray tubes, and more particularly to the assembly of its constituent elements and to its attachment to the neck of the tube.

Un tel système de déviation est généralement constitué d'une paire de bobines de déviation verticale, d'une paire de bobines de déviation horizontale les deux paires étant isolées électriquement par un séparateur, généralement en matière plastique, lequel permet en outre d'améliorer la rigidité mécanique du dispositif de déviation, de fixer les bobines les unes par rapport aux autres et d'ajuster l'ensemble sur le col du tube. Le séparateur est constitué d'un corps principal, en une ou plusieurs parties, sensiblement en forme d'entonnoir, et d'une partie arrière flexible épousant le col du tube et destinée à fixer la position du système de déviation selon l'axe longitudinal du tube; cette fixation est généralement opérée grâce à un collier de serrage disposé au-dessus de la partie arrière flexible.Such a deflection system generally consists of a pair of vertical deflection coils, of a pair of horizontal deflection coils, the two pairs being electrically isolated by a separator, generally made of plastic, which further improves the mechanical rigidity of the deflection device, of fixing the coils relative to each other and of adjusting the assembly on the neck of the tube. The separator consists of a main body, in one or more parts, substantially in the form of a funnel, and a flexible rear part conforming to the neck of the tube and intended to fix the position of the deflection system along the longitudinal axis. tube; this fixing is generally effected by means of a clamping collar placed above the flexible rear part.

Afin d'améliorer, lors du balayage horizontal de l'écran du tube cathodique, les transitions entre une partie sombre et une partie brillante de l'image formée sur l'écran, il est connu d'utiliser une paire de bobines auxiliaires dites de modulation de la vitesse de balayage horizontal; ces bobines viennent superposer au champ de déviation horizontal créé par les bobines principales un champ auxiliaire de manière à anticiper les variations importantes du signal de luminance et à modifier en conséquence la vitesse du balayage horizontal. Il est par ailleurs connu de disposer avantageusement ces bobines auxiliaires sur le col du tube, les bobines de déviation horizontale du système de déviation venant parfois les recouvrir partiellement ou en totalité. Il est également connu de réaliser ces bobines auxiliaires par gravure sur un support en forme de couronne rigide ou flexible. Des exemples de telles dispositions sont décrites dans la demande de brevet européen EP484606.In order to improve, when horizontally scanning the screen of the cathode ray tube, the transitions between a dark part and a bright part of the image formed on the screen, it is known to use a pair of auxiliary coils known as modulation of the horizontal scanning speed; these coils are superimposed on the horizontal deflection field created by the main coils an auxiliary field so as to anticipate significant variations in the luminance signal and to modify the speed of the horizontal scanning accordingly. It is also known to advantageously arrange these auxiliary coils on the neck of the tube, the horizontal deflection coils of the deflection system sometimes sometimes partially or entirely covering them. It is also known to produce these auxiliary coils by etching on a support in the form of a rigid or flexible crown. Examples of such arrangements are described in European patent application EP484606.

Lors de l'installation sur le col du tube d'un système de déviation comportant des bobines auxiliaires de modulation de la vitesse de balayage des faisceaux électroniques, la position des bobines auxiliaires par rapport aux bobines de déviation horizontale doit être réglée de façon à optimiser leur effet sur le champ magnétique de déviation horizontale.When installing a deflection system on the tube neck comprising auxiliary coils for modulating the scanning speed of the electron beams, the position of the auxiliary coils relative to the horizontal deflection coils must be adjusted so as to optimize their effect on the magnetic field of horizontal deviation.

Le but de la présente invention est de rendre automatique le positionnement et le maintien en place des bobines auxiliaires par rapport aux bobines de déviation horizontale, cela de façon simple et rapide.The object of the present invention is to make the positioning and holding in place of the auxiliary coils automatic relative to the horizontal deflection coils, this in a simple and rapid manner.

Pour atteindre ce but, le système de déviation comprend un séparateur dont la partie arrière sensiblement cylindrique est munie de moyens de détrompe et/ou de positionnement et des bobines auxiliaires venant s'appuyer sur la paroi du séparateur, et comportant un ou plusieurs orifices destinés à coopérer avec les moyens de détrompe et de positionnement situés sur le séparateur de manière à opérer la mise en place des dites bobines auxiliaires par rapport aux bobines de déviation horizontale et verticale dans une position prédéterminée. De plus, les bobines auxiliaires sont avantageusement maintenues en position par un organe de maintien venant se solidariser au corps du séparateur par clipsage sur les moyens de détrompe et/ou de positionnement.To achieve this goal, the deflection system comprises a separator, the substantially cylindrical rear part of which is provided with polarization and / or positioning means and auxiliary coils coming to bear on the wall of the separator, and comprising one or more orifices intended to cooperate with the polarizing and positioning means located on the separator so as to operate the positioning of said auxiliary coils relative to the horizontal and vertical deflection coils in a predetermined position. In addition, the auxiliary coils are advantageously held in position by a holding member which is joined to the body of the separator by clipping onto the polarizing and / or positioning means.

L'invention sera mieux comprise à l'aide des desssins, parmi lesquels:

  • la figure 1 représente un séparateur conforme à la présente invention
  • la figure 2 représente une vue de face d'un séparateur conforme à la présente invention
  • la figure 3 montre en développé la paire de bobines auxiliaires et son connecteur de sortie
  • la figure 4 est une vue en perspective montrant les bobines auxiliaires disposées sur la partie arrière du séparateur
  • la figure 5 est une vue en perspective de l'organe de maintien
  • la figure 6 est une coupe selon un plan perpendiculaire à l'axe principal Z de la partie arrière d'un système de déviation conforme à l'invention
  • la figure 7 est une coupe selon un plan passant par l'axe Z de la partie arrière d'un système de déviation conforme à l'invention
The invention will be better understood with the aid of the drawings, among which:
  • Figure 1 shows a separator according to the present invention
  • Figure 2 shows a front view of a separator according to the present invention
  • Figure 3 shows in developed the pair of auxiliary coils and its output connector
  • Figure 4 is a perspective view showing the auxiliary coils arranged on the rear part of the separator
  • Figure 5 is a perspective view of the holding member
  • Figure 6 is a section along a plane perpendicular to the main axis Z of the rear part of a deflection system according to the invention
  • Figure 7 is a section along a plane passing through the axis Z of the rear part of a deflection system according to the invention

Un système de déviation des faisceaux pour tube à rayons cathodiques comporte une paire de bobines de déviation horizontale et une paire de bobines de déviation verticale. Les deux paires de bobines sont disposées de part et d'autre d'un séparateur, généralement en matériau plastique, ayant pour fonction d'assurer le maintien en positionnement d'une paire de bobines par rapport à l'autre ainsi que la rigidité mécanique de l'ensemble tout en offrant une isolation électrique entre les deux paires de bobines; le séparateur, comme indiqué sur la figure 1 comporte en outre les moyens de fixation du système de déviation sur le col du tube: des pieds (1) permettent de positionner la partie avant (5) tandis qu'une couronne flexible (2) permet la fixation de la partie arrière (4) sur le col du tube grace à un collier de serrage (3).A beam deflection system for a cathode ray tube includes a pair of horizontal deflection coils and a pair of vertical deflection coils. The two pairs of coils are arranged on either side of a separator, generally made of plastic material, having the function of ensuring the maintenance in positioning of one pair of coils relative to the other as well as the mechanical rigidity of the assembly while providing electrical insulation between the two pairs of coils; the separator, as shown in Figure 1 further comprises the means for fixing the deflection system on the neck of the tube: feet (1) allow to position the front part (5) while a flexible crown (2) allows fixing the rear part (4) on the neck of the tube with a clamp (3).

Dans le cadre de l'invention, le corps principal 7 du séparateur , sur lequel sont fixées les bobines de déflexion, et la partie arrière 4 sont distinctes et peuvent se solidariser l'une à l'autre par des moyens qui vont être décrits plus loin. Les bobines auxiliaires utilisées pour modifier le champ de déviation horizontale peuvent être des bobines en fils rigides ou de préférence des bobines gravées sur un support souple. La figure 3 montre les deux bobines 20 et 21 gravées sur un support souple 27 et le connecteur d'alimentation 28 grâce auquel on fait parvenir aux bobines le signal destiné à modifier le champ de déviation horizontale.In the context of the invention, the main body 7 of the separator, on which the deflection coils are fixed, and the rear part 4 are separate and can be joined to one another by means which will be described more far. The auxiliary coils used to modify the horizontal deflection field can be coils made of rigid wires or preferably coils engraved on a flexible support. FIG. 3 shows the two coils 20 and 21 etched on a flexible support 27 and the power connector 28 by means of which the signal intended to modify the horizontal deflection field is sent to the coils.

Positionner la paire de bobines auxiliaires revient à régler deux paramètres:

  • leur position par rapport au bobines de déviation horizontale le long de l'axe Z
  • leur position angulaire dans le plan XY de manière à faire coïncider la direction du champ qu'elles créent avec la direction du champ créé par les bobines de déviation horizontale
Positioning the pair of auxiliary coils means setting two parameters:
  • their position relative to the horizontal deflection coils along the Z axis
  • their angular position in the XY plane so as to make the direction of the field they create coincide with the direction of the field created by the horizontal deflection coils

Comme indiqué par la figure 4 , pour positionner rapidement et précisement les bobines auxiliaires 20 et 21 par rapport aux bobines de déviation horizontales, l'invention propose d'utiliser le corps 7 du séparateur comme référence en plaçant les dites bobines sur la paroi interne 6 du séparateur dans une position prédéterminée grâce à des excroissances situés sur la surface du séparateur coopérant avec des orifices réalisés sur le support des bobines auxiliaires. Ces excroissances peuvent être par exemple des ergots (12 à 15) coopérant avec trous fermés (22 à 25) réalisés sur le support des bobines auxiliaires, ou une dent 16 coopérant avec une fente débouchante 26 située sur la périphérie du support 27. Dans un mode de réalisation préférentiel, on associe quatre ergots (12 à 15) et une dent 16; ce mode de réalisation est également représenté sur les figures 1 et 2. La mise en place des bobines auxiliaires s'effectue alors de la manière suivante:

  • le support 27 des bobines representées sur la figure 3 est introduit à l'intérieur de la partie arrière du corps principal 7
  • le positionnement angulaire s'opère en introduisant la dent 16 dans l'ouverture 26
  • le positionnement longitudinal le long de l'axe Z s'opère en faisant coïncider les ouvertures 22 à 25 avec les ergots 12 à 15.
As shown in Figure 4, to quickly and accurately position the auxiliary coils 20 and 21 relative to the horizontal deflection coils, the invention proposes to use the body 7 of the separator as a reference by placing said coils on the inner wall 6 of the separator in a predetermined position thanks to protuberances located on the surface of the separator cooperating with orifices produced on the support of the auxiliary coils. These protuberances can for example be lugs (12 to 15) cooperating with closed holes (22 to 25) produced on the support of the auxiliary coils, or a tooth 16 cooperating with a through slot 26 located on the periphery of the support 27. In a preferred embodiment, four lugs (12 to 15) and a tooth 16 are associated; this embodiment is also shown in FIGS. 1 and 2. The positioning of the auxiliary coils is then carried out as follows:
  • the support 27 of the coils shown in Figure 3 is inserted inside the rear part of the main body 7
  • the angular positioning takes place by introducing the tooth 16 into the opening 26
  • the longitudinal positioning along the Z axis takes place by making the openings 22 to 25 coincide with the pins 12 to 15.

Le support 27, ayant par élasticité naturelle tendance à retourner à une forme sensiblement plane, reste plaqué contre la paroi interne du séparateur. Il y a lieu cependant d'assurer son maintien , afin qu'il ne se détache pas suite aux manipulations que va subir le système de déviation, en particulier lorsqu'il va ètre réglé et positionné sur le col du tube cathodique; pour cela, un organe de maintien 4, va venir se fixer sur l'arrière du corps 7 du séparateur; cet organe en forme de chapeau annulaire, comme schématisé sur la figure 5, comprend des pattes flexibles 40, réparties sur sa périphérie interne de l'anneau et s'étendant vers l'avant du séparateur; chaque patte 40 possède une ouverture 41 destinée à entourer l'un des ergots situé sur la surface interne du corps 7 du séparateur et à assurer la solidarisation par clipsage des parties 4 et 7. Un support 42, sur lequel sont disposés des organes de fixation non représentés, permet l'accrochage du connecteur 28 d'alimentation des bobines 20 et 21.The support 27, having by natural elasticity a tendency to return to a substantially flat shape, remains pressed against the internal wall of the separator. However, it must be maintained so that it does not come off following the manipulations that the deflection system will undergo, in particular when it is going to be adjusted and positioned on the neck of the cathode ray tube; for this, a holding member 4 will be fixed on the rear of the body 7 of the separator; this annular cap-shaped member, as shown diagrammatically in FIG. 5, comprises flexible tabs 40, distributed over its internal periphery of the ring and extending towards the front of the separator; each tab 40 has an opening 41 intended to surround one of the lugs located on the internal surface of the body 7 of the separator and to ensure the fastening by clipping of the parts 4 and 7. A support 42, on which are arranged fixing members no shown, allows the attachment of the connector 28 for supplying the coils 20 and 21.

Les figures 6 et 7 montrent des coupes selon deux plans, le premier contenant l'axe Z, le second perpendiculaire à cet axe, de la partie arrière du système de déviation une fois ses divers organes assemblés. Sur ces figures on peut voir l'arrière des bobines de déviation horizontale 52 et des bobines de déviation verticale 51; les pattes 40 viennent recouvrir en partie les bobines 20 et 21 et les maintenir en position grâce au clipsage sur les ergots 12 à 15 situés sur la paroi interne du corps 7 du séparateur. Pour assurer une bonne rigidité mécanique de l'ensemble, l'anneau 4 doit comporter au moins trois pattes 40; dans un mode de réalisation préférentiel l'anneau 4 comprend quatre pattes 40 disposées symétriquement par rapport aux plans XZ et YZ.Figures 6 and 7 show sections along two planes, the first containing the axis Z, the second perpendicular to this axis, of the rear part of the deflection system once its various organs assembled. In these figures we can see the rear of the horizontal deflection coils 52 and the vertical deflection coils 51; the tabs 40 partially cover the coils 20 and 21 and hold them in position by clipping onto the lugs 12 to 15 located on the internal wall of the body 7 of the separator. To ensure good mechanical rigidity of the assembly, the ring 4 must have at least three tabs 40; in a preferred embodiment the ring 4 comprises four legs 40 arranged symmetrically with respect to the XZ and YZ planes.

Un mode de réalisation avantageux consiste à faire en sorte que le l'anneau 4 permette la fixation de la partie arrière du système de déviation sur le col du tube. Pour cela, l'anneau comporte sur sa périphérie des pattes flexibles 60 s'étendant dans un sens opposé à celui des pattes 40; comme indiqué sur la figure 1, un anneau 3 vient recouvrir ces pattes et fixe par serrage l'arrière du séparateur sur le col du tube.An advantageous embodiment consists in ensuring that the ring 4 allows the fixing of the rear part of the deflection system on the neck of the tube. For this, the ring has on its periphery flexible legs 60 extending in a direction opposite to that of the legs 40; as shown in FIG. 1, a ring 3 covers these tabs and fixes by clamping the rear of the separator on the neck of the tube.

L'invention n'est pas limitée au positionnement des bobines auxiliaires à l'intérieur du séparateur, elle peut s'appliquer de la même manière au positionnement sur la paroi externe, à condition d'avoir un support 27 fermé, ou rendu fermé aprés avoir réunis les bords 29 et 30, par exemple à l'aide de ruban adhésif; les dents et les ergots sont alors disposés sur la paroi externe de la partie arrière du séparateur. De la même façon, les pattes 40 recouvrent le support 27 et assurent la fixation par clipsage sur les ergots, ces pattes étant alors disposées sur une couronne de diamètre supérieur à celui de la surface sur laquelle sont disposés les ergots.The invention is not limited to the positioning of the auxiliary coils inside the separator, it can be applied in the same way to positioning on the external wall, provided that a support 27 is closed, or made closed after having joined edges 29 and 30, for example using adhesive tape; the teeth and the pins are then arranged on the external wall of the rear part of the separator. In the same way, the legs 40 cover the support 27 and ensure the fixing by clipping on the lugs, these lugs then being arranged on a crown of diameter greater than that of the surface on which the lugs are arranged.

Claims (9)

  1. Electron-beam deflection system for cathode-ray tubes, comprising a pair of horizontal-deflection coils (52) and a pair of vertical-deflection coils (51), these two pairs being electrically isolated from each other by a separator (7), and a pair of auxiliary coils (20, 21) which is arranged around the neck of the tube and is intended to modify the magnetic field created by at least one of the two pairs of deflection coils, characterized in that:
    - the separator (7) comprises a substantially cylindrical rear part provided with polarization and positioning means (12 to 15);
    - the auxiliary coils press against the wall of the separator and have -one or more orifices (22 to 25) in which the polarization and positioning means (12 to 15) located on the separator are intended to engage, so as to put into place in a predetermined position the said auxiliary coils (20, 21) with respect to the horizontal-deflection coils (52) and vertical-deflection coils (51).
  2. Electron-beam deflection system according to Claim 1, characterized in that the auxiliary coils are made on a flexible support.
  3. Electron-beam deflection system according to Claim 1 or 2, characterized in that the polarization and positioning means are lugs located on the surface of the separator.
  4. Electron-beam deflection system according to one of Claims 1 to 3, characterized in that at least one of the orifices of the auxiliary coils is in the form of an emerging notch.
  5. Electron-beam deflection system according to one of the preceding claims, characterized in that the auxiliary coils are at least partly covered by a retention member.
  6. Electron-beam deflection system according to Claim 5, characterized in that the retention member includes at least one flexible tab intended to engage with at least one of the lugs located on the separator so as to snap fasten onto the said lug.
  7. Electron-beam deflection system according to Claims 5 or 6, characterized in that the retention member has means enabling it to be fixed to the neck of the tube.
  8. Electron-beam deflection system according to Claim 7, characterized in that the fixing means are flexible tabs integral with the retention member.
  9. Cathode-ray tube whose electron-beam deflection system is in accordance with any one of the preceding claims.
EP94401501A 1994-07-01 1994-07-01 Electron beam deflection system for cathode ray tubes Expired - Lifetime EP0690468B1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
EP94401501A EP0690468B1 (en) 1994-07-01 1994-07-01 Electron beam deflection system for cathode ray tubes
AT94401501T ATE157814T1 (en) 1994-07-01 1994-07-01 ELECTRON BEAM DEFLECTION SYSTEM FOR CATHODE RAY TUBES
DE69405382T DE69405382T2 (en) 1994-07-01 1994-07-01 Electron beam deflection system for cathode ray tubes
TW083108174A TW318254B (en) 1994-07-01 1994-09-05
US08/461,096 US5592045A (en) 1994-07-01 1995-06-05 Auxiliary coil fastener in a deflection yoke
MYPI95001806A MY115363A (en) 1994-07-01 1995-06-30 An auxiliary coil fastener in a deflection yoke
PL95309456A PL176432B1 (en) 1994-07-01 1995-06-30 Crt beam deflection assembly
CN95107836A CN1098588C (en) 1994-07-01 1995-06-30 An auxiliary coil fastener in a deflection yoke
SG1995000779A SG34242A1 (en) 1994-07-01 1995-06-30 An auxiliary coil fastener in a deflection yoke
KR1019950019204A KR100393388B1 (en) 1994-07-01 1995-07-01 Secondary Coil Fasteners in Deflection Yoke
JP7167355A JPH0850868A (en) 1994-07-01 1995-07-03 Auxiliary coil fixture of deflection yoke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94401501A EP0690468B1 (en) 1994-07-01 1994-07-01 Electron beam deflection system for cathode ray tubes

Publications (2)

Publication Number Publication Date
EP0690468A1 EP0690468A1 (en) 1996-01-03
EP0690468B1 true EP0690468B1 (en) 1997-09-03

Family

ID=8218022

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94401501A Expired - Lifetime EP0690468B1 (en) 1994-07-01 1994-07-01 Electron beam deflection system for cathode ray tubes

Country Status (11)

Country Link
US (1) US5592045A (en)
EP (1) EP0690468B1 (en)
JP (1) JPH0850868A (en)
KR (1) KR100393388B1 (en)
CN (1) CN1098588C (en)
AT (1) ATE157814T1 (en)
DE (1) DE69405382T2 (en)
MY (1) MY115363A (en)
PL (1) PL176432B1 (en)
SG (1) SG34242A1 (en)
TW (1) TW318254B (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5861711A (en) * 1996-03-28 1999-01-19 Samsung Electronics Co., Ltd. Deflection yoke mounting device of the spray
JP3737191B2 (en) * 1996-04-26 2006-01-18 株式会社東芝 Cathode ray tube deflection yoke and cathode ray tube apparatus
KR100220994B1 (en) * 1996-05-29 1999-09-15 이형도 Separation type and one body type convergense compensation device of deflection yoke
KR19980051541A (en) * 1996-12-23 1998-09-15 구자홍 Deflection yoke for cathode ray tube
FR2771216A1 (en) * 1997-11-18 1999-05-21 Thomson Tubes & Displays Electron beam deflection adjustment system
DE29721276U1 (en) * 1997-12-01 1998-02-19 Siemens Ag Monochrome monitor
FR2795231B1 (en) * 1999-06-18 2001-08-17 Thomson Tubes & Displays DEFLECTION DEVICE FOR CATHODE RAY TUBE
ITMI20020501A1 (en) * 2002-03-08 2003-09-08 Videocolor Spa DEFLECTION DEVICE FOR CATHODE TUBE
JP2004200089A (en) * 2002-12-20 2004-07-15 Hitachi Ltd Cathode-ray tube device and television receiver
JP2004355855A (en) * 2003-05-27 2004-12-16 Matsushita Electric Ind Co Ltd Deflection yoke and color picture tube device
US6882096B2 (en) * 2003-07-10 2005-04-19 Sony Corporation Active landing control system for raster based devices
KR20070090966A (en) * 2004-12-31 2007-09-06 톰슨 라이센싱 Cathode ray tube deflection yoke securing device

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JPS594823B2 (en) * 1976-06-01 1984-02-01 ソニー株式会社 deflection yoke
JPS59191238A (en) * 1983-04-15 1984-10-30 Hitachi Ltd Deflection yoke
US4429293A (en) * 1983-05-13 1984-01-31 Rca Corporation Pincushion raster corrector distortion with improved performance
JPS6039742A (en) * 1983-08-12 1985-03-01 Hitachi Ltd Deflection yoke
KR880003556Y1 (en) * 1985-12-12 1988-10-12 주식회사 금성사 A deflection yoke
JPH03101845A (en) * 1989-09-16 1991-04-26 Taiyo Yuden Co Ltd Thermostatic device
ATE136711T1 (en) * 1990-11-09 1996-04-15 Thomson Tubes & Displays DEVICE FOR MODULATING SCANNING SPEED
KR940006461Y1 (en) * 1991-02-12 1994-09-24 주식회사 금성사 Shelter constructure of electromagnetic wave for range
EP0516229B1 (en) * 1991-05-31 1996-01-03 Koninklijke Philips Electronics N.V. Display tube including a convergence correction device
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US5485054A (en) * 1992-10-09 1996-01-16 U.S. Philips Corporation Display tube having a deflection coil support and an auxiliary deflection coil support

Also Published As

Publication number Publication date
ATE157814T1 (en) 1997-09-15
DE69405382D1 (en) 1997-10-09
SG34242A1 (en) 1996-12-06
JPH0850868A (en) 1996-02-20
KR960005726A (en) 1996-02-23
CN1118547A (en) 1996-03-13
PL309456A1 (en) 1996-01-08
EP0690468A1 (en) 1996-01-03
US5592045A (en) 1997-01-07
CN1098588C (en) 2003-01-08
PL176432B1 (en) 1999-05-31
DE69405382T2 (en) 1998-02-12
KR100393388B1 (en) 2003-10-17
TW318254B (en) 1997-10-21
MY115363A (en) 2003-05-31

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