WO1998019326A1 - Procede de disposition du diagramme de fils conducteurs d'un element deflecteur chevauchant et de type film pour tube cathodique - Google Patents

Procede de disposition du diagramme de fils conducteurs d'un element deflecteur chevauchant et de type film pour tube cathodique Download PDF

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Publication number
WO1998019326A1
WO1998019326A1 PCT/KR1996/000274 KR9600274W WO9819326A1 WO 1998019326 A1 WO1998019326 A1 WO 1998019326A1 KR 9600274 W KR9600274 W KR 9600274W WO 9819326 A1 WO9819326 A1 WO 9819326A1
Authority
WO
WIPO (PCT)
Prior art keywords
film
films
cathode ray
ray tube
deflection
Prior art date
Application number
PCT/KR1996/000274
Other languages
English (en)
Inventor
Baek Young Choi
Soo Ryong Byun
Don Bean Choi
Original Assignee
Orion Electric Co., Ltd.
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 Orion Electric Co., Ltd. filed Critical Orion Electric Co., Ltd.
Priority to US09/091,786 priority Critical patent/US6066913A/en
Publication of WO1998019326A1 publication Critical patent/WO1998019326A1/fr

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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
    • H01J29/762—Deflecting by magnetic fields only using saddle coils or printed windings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/02—Cathode ray tubes; Electron beam tubes having one or more output electrodes which may be impacted selectively by the ray or beam, and onto, from, or over which the ray or beam may be deflected or de-focused
    • 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
    • H01J9/236—Manufacture of magnetic deflecting devices for cathode-ray tubes
    • 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 present invention generally relates to a method of arranging a conductive wire pattern of a film-type saddle deflection member for a cathode ray tube and a
  • the present invention relates to a method of arranging a conductive wire pattern of a film-type saddle deflection member for a cathode ray tube which properly arranges a
  • each pair of film-type deflection members is
  • FIG. 1 shows a color-picture cathode ray tube 10 including a panel 12 having a panel surface 18, a fluorescence screen 20 formed on the back of the panel surface 18, a neck 14 containing an electron gun 11 which produces electron beams 19a and 19b and emits them towards the fluorescence screen 20, a funnel 13 for connecting the neck 14 to the panel 12, and a deflection yoke assembly 17 mounted on a connection portion at which the neck 14 is connected to the funnel 13.
  • the funnel 13 has an internal conductive layer (not shown) contacting a positive electrode terminal 15.
  • a shadow mask 16 which has a plurality of apertures or slots 16a arranged in a predetermined pattern, is spaced at a predetermined distance apart from the screen 20 and is detachably installed in the panel 12.
  • the deflection yoke assembly 17 generally has a pair of horizontal deflection members and a pair of vertical deflections members. As a current is applied thereto, the horizontal deflection members produce a horizontal deflection magnetic-field for horizontally deflecting the electron beams 19a and 19b. In addition, the vertical deflection members also produce a vertical deflection magnetic-field for vertically deflecting the electron beams 19a and 19b as a current is applied to the vertical deflection members.
  • the deflection magnetic-fields is preferably varied by a proper means in such a manner that the electron beams 19a and 19b can be scanned over the whole face of the fluorescence screen 20, thereby providing two-dimensional images having an optimum deflection sensitivity on the cathode ray tube 12.
  • deflection of the magnetic field permits the horizontal deflection member to produce a pincushion magnetic field, and permits the vertical deflection member to produce a barrel magnetic field so that the electron beams of an in-line type electron gun are easily converged.
  • FIG 2 is a sectional view taken along line 2-2 of FIG. 1 for illustrating a pair of film-type saddle horizontal deflection members LF and RF and a pair of film-type toroidal vertical deflection members UF and LR.
  • the saddle horizontal deflection members LF and RF are mounted on the yoke with a supporting member 135a being interposed between the saddle horizontal deflection members LF and RF and an inner surface of a bobbin 135, and the toroidal vertical deflection members UF and LR are wound around a core 36 at the outside of the bobbin 135.
  • FIG. 3 shows European patent application No.
  • the saddle horizontal deflection member 30 for the cathode ray tube comprises a deflection film 31 and a connection film 35 electrically connected to the deflection film 31 so as to form a predetermined circuit.
  • the center portion of the deflection film 31 is severed by a predetermined width, and a neck end turn portion 34 is provided at the connection portion thereof .
  • a plurality of conductive wires disposed in both severed sides of the deflection film 31 respectively form deflection portions 32 and 33.
  • connection portions 32' and 33' at which each conductive wire is exposed, are formed at both ends of deflection portions 32 and 33.
  • the connection film 35 forming a U-shaped bridging member of the deflection film 31 is provided with connection portions 35 ' and 35 ' , at the ends of which the plural conductive wires are exposed, thereby connecting the connection portions 32' and 33' of the deflection film 31 such that they form a predetermined circuit.
  • FIG. 4 schematically shows one film of a film-type saddle deflection member as proposed by the same inventors and assigned to the assignee of present invention.
  • the film-type saddle deflection member comprises a plurality of deflection films Fl(FN) and connection films Cl(CN).
  • the deflection films Fl(FN) are respectively formed at the center thereof with a window so that it can be easily located at a predetermined position, and a plurality of conductive wires for producing a deflection magnetic field are arranged in a predetermined pattern at each deflection portion FR and FL.
  • the conductive wires are connected to each other at a neck end turn portion FE .
  • connection portions F1R...FNL which are exposed to the outside so as to form connection terminals, are provided at each end of the conductive wires so that the connection portions FIR...FNL are connected to the connection portions C1R...CNL of connection films Cl(CN), thereby forming a predetermined circuit.
  • the film-type saddle deflection member constructed as mentioned above can be simply manufactured as compared with the prior saddle deflection coil in which coils are wound around a core. Further, the pattern structure of the conductive wires in the film-type saddle deflection member constructed as mentioned above is not only evenly and stably formed, but also variously changed. However, though it can variously change the pattern structure, the film-type saddle deflection member constructed as mentioned above should have been tested many times in order to obtain the optimum pattern structure.
  • the present invention has been made to overcome the above described problem, and accordingly, it is an object of the present invention to provide a method of arranging a conductive wire pattern of a film-type saddle deflection member for a cathode ray tube which properly arranges the conductive wires in each film such that a predetermined magnetic field having the optimum deflection sensitivity and convergence can be obtained, and to provide a film-type saddle deflection member having the conductive wire pattern arranged by the method.
  • the film-type saddle deflection member comprises a plurality of deflection films Fl(FN) and a plurality of connection films Cl(CN)
  • the plurality of deflection films (Fl(FN) are stacked one on another and formed in a predetermined shape
  • the plurality of deflection films (Fl(FN) has a pair of deflection portions, a neck end turn portion, and a pair of first connection portions
  • the plurality of connection films has a pair of second connection portions and connects the pair of first connection portions of the deflection films to each other at the pair of the second connection portions thereof, thereby forming a funnel end turn portion, being characterized in that the total number of conductive wires arranged from a horizontal axis of the cathode
  • FIG. 1 is a longitudinally and partially sectional plan view for schematically illustrating the structure of a color-picture cathode ray tube
  • FIG. 2 is a sectional view taken along line 2-2 of FIG. 1 for illustrating a pair of saddle horizontal deflection members and a pair of toroidal vertical deflection members;
  • FIG. 3 is a perspective view showing a film-type saddle horizontal deflection member
  • FIG. 4 is a perspective view showing a deflection film and a connection film constituting another film-type saddle horizontal deflection member
  • FIG. 5 is a sectional view taken at a right angle with respect to an axis of a tube for illustrating a distribution of a conventional saddle horizontal deflection coil
  • FIG. 6 is a sectional view taken at a right angle with respect to an axis of a tube for illustrating a method of arranging conductive wires in a film-type saddle horizontal deflection member according to the present invention
  • FIG. 7 is a Fourier series graph for illustrating a method of arranging conductive wires of a film-type saddle horizontal deflection member for a cathode ray tube according to the present invention
  • FIG. 8 is a graph for illustrating a method of arranging conductive wires, in which the Fourier series graph shown in FIG. 7 is applied to the film-type saddle horizontal deflection member for a cathode ray tube according to the present invention.
  • FIG. 9 is a graph for illustrating a method of arranging conductive wires in each sectional area which is vertically taken along an axis of a tube.
  • FIG. 5 is a sectional view of film-type saddle horizontal deflection coils for a cathode ray tube taken at a right angle with respect to an axis of the tube for illustrating a distribution of the coils.
  • various kinds of coil distributions which are different from the distribution required to form a desired magnetic field, can be employed.
  • FIG. 6 is a sectional view taken at a right angle with respect to the axis of the tube for illustrating a method of arranging a conductive wire pattern of a film-type saddle horizontal deflection member for a cathode ray tube according to the present invention.
  • a first order term to a third order term of the above Fourier series are illustrated by curved lines SI, S3, and S5.
  • FIG. 8 shows the curved lines SI, S3, and S5 made by applying the first to third order terms of the Fourier series to the basis of a curved line SO which is corresponding to a sectional shape of the neck or funnel of the tube.
  • a coefficient(A 1 ) of the first order term is a number of basic conductive wires determining the deflection sensitivity
  • the center of the magnetic field moves upward or downward according to signs (i.e, negative sign or positive sign) of a coefficient(A 3 ) of the second order term
  • the coefficient (A 3 ) is a main component for producing the barrel magnetic field or the pin-cushion magnetic field.
  • the third order term since conductive wires according to the third order term are distributed as a quadrupole form in a cartesian coordinate, the third order term may exert an influence on the convergence of the in-line type three electron beams .
  • FIG. 9 is a graph for illustrating a method of arranging conductive wires in each sectional area Zl, Z2, Z3... which is vertically disposed along the axis of the tube.
  • one conductive wire is arranged in each film disposed between the angles ⁇ i and ⁇ ,,.
  • one conductive wire can be arranged at the central angle positioned between the angles ⁇ i and ⁇ ,, or alternatively, the conductive wire can be variously arranged within the range of the angles according to the characteristics of the tube.
  • ⁇ ( ⁇ ) Ps * (A,,sin ⁇ + A 3 sin3 ⁇ + A 5 sin5 ⁇ + )], and one conductive wire is arranged in each film disposed between the angles ⁇ and ⁇ in which the difference value between ⁇ ( ⁇ i ) and ⁇ ( ⁇ i _ 1 ) is set to 1.
  • Ps it is also possible to equally divide the total conductive wires into each film regardless the influence of the magnetic field caused by the difference of distance from the axis of the tube.
  • the conductive wires can be arranged in each sectional area positioned along the axis of the tube, and the film-type deflection member can be manufactured in a pattern structure in which the conductive wires are connected to each other in series.
  • the present invention can obtain the film-type deflection member according to the Fourier series. That is, by dividing the angle ⁇ into predetermined spaces according to the Fourier series and by substituting the ⁇ i and ⁇ i _ 1 therefor, the desirable distribution of the conductive wires as shown in FIG. 6 can be obtained.
  • the conductive wires having the distribution and number according to the angle range ⁇ and ⁇ in the deflection member can be arranged. That is, the film—type deflection member can be manufactured to be nearly perfect as it is designed taking experiences into consideration.
  • the present invention can obtain an optimum deflection sensitivity and an optimum convergence, and thereby producing exactly the same magnetic field pattern as designed. While the present invention has been particularly shown and described with reference to a preferred embodiment thereof, it will be understood by those skilled in the art that various changes in form and detail may be effected therein without departing from the spirit and scope of the invention as defined by the appended claims.

Abstract

Cette invention concerne un procédé qui permet de disposer le diagramme de fils conducteurs d'un élément déflecteur chevauchant et de type film (par exemple LF ou RF) destiné à un tube cathodique. Ce procédé permet de disposer de manière adéquate les fils conducteurs de chaque film de sorte qu'un champ magnétique optimal puisse être obtenu. Cette invention concerne également une bobine chevauchante multicouches qui comprend le diagramme de fils conducteurs agencé d'après ce procédé. Le nombre total de fils conducteurs, qui sont disposés depuis un axe horizontal du tube cathodique jusqu'en une position se trouvant à un angle υ par rapport audit axe horizontal, est défini en fonction de l'équation [ζ(υ) = A1sinυ + A3sin3υ + A5sin5υ + ...] où υ représente l'angle de l'axe horizontal par rapport à une ligne à 90 degrés. A1, A3, A5, ..., A2N-1 sont des nombres entiers, tandis que n est un nombre naturel. Ce procédé permet de convertir la ligne courbe d'un diagramme de champ magnétique prédéterminé en une série de Fourier, et de disposer les fils conducteurs de chaque film en fonction de ladite série de Fourier. Ce système permet d'obtenir un diagramme de champ magnétique proche de la perfection.
PCT/KR1996/000274 1996-10-25 1996-12-30 Procede de disposition du diagramme de fils conducteurs d'un element deflecteur chevauchant et de type film pour tube cathodique WO1998019326A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US09/091,786 US6066913A (en) 1996-12-30 1996-12-30 Method of arranging a conductive wire pattern of a film-type saddle deflection member for a CRT

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1019960048152A KR100246287B1 (ko) 1996-10-25 1996-10-25 음극선관용 필름형 새들타입 편향부재의 도선의 패턴 배열방법 및 이에 의한 도선배열구조의 필름형 새들타입 편향부재
KR1996/48152 1996-10-25

Publications (1)

Publication Number Publication Date
WO1998019326A1 true WO1998019326A1 (fr) 1998-05-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR1996/000274 WO1998019326A1 (fr) 1996-10-25 1996-12-30 Procede de disposition du diagramme de fils conducteurs d'un element deflecteur chevauchant et de type film pour tube cathodique

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Country Link
KR (1) KR100246287B1 (fr)
WO (1) WO1998019326A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0169613A1 (fr) * 1984-07-27 1986-01-29 Philips Electronics Uk Limited Bobines en forme de selle pour unités de déviation électromagnétiques
EP0361967A1 (fr) * 1988-09-30 1990-04-04 Kabushiki Kaisha Toshiba Inductivité plane
GB2260222A (en) * 1991-10-03 1993-04-07 Murata Manufacturing Co Flat coils

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0169613A1 (fr) * 1984-07-27 1986-01-29 Philips Electronics Uk Limited Bobines en forme de selle pour unités de déviation électromagnétiques
EP0361967A1 (fr) * 1988-09-30 1990-04-04 Kabushiki Kaisha Toshiba Inductivité plane
GB2260222A (en) * 1991-10-03 1993-04-07 Murata Manufacturing Co Flat coils

Also Published As

Publication number Publication date
KR100246287B1 (ko) 2000-03-15
KR19980028957A (ko) 1998-07-15

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