WO2003019605A1 - Bobine de deviation de type en selle de cheval d'un tube recepteur d'image couleur - Google Patents

Bobine de deviation de type en selle de cheval d'un tube recepteur d'image couleur Download PDF

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Publication number
WO2003019605A1
WO2003019605A1 PCT/JP2002/008717 JP0208717W WO03019605A1 WO 2003019605 A1 WO2003019605 A1 WO 2003019605A1 JP 0208717 W JP0208717 W JP 0208717W WO 03019605 A1 WO03019605 A1 WO 03019605A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
sub
saddle
type deflection
electron gun
Prior art date
Application number
PCT/JP2002/008717
Other languages
English (en)
Japanese (ja)
Inventor
Kosaku Hiroshima
Original Assignee
Sanyo Electric Co., Ltd.
Sanyo Electronic Components 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 Sanyo Electric Co., Ltd., Sanyo Electronic Components Co., Ltd. filed Critical Sanyo Electric Co., Ltd.
Publication of WO2003019605A1 publication Critical patent/WO2003019605A1/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

Definitions

  • the present invention relates to a saddle-type deflection coil constituting a deflection yoke in a color picture tube such as a television receiver.
  • the saddle type deflection coil includes a pair of deflection magnetic field generators (40) extending along the direction of the tube axis of the color picture tube. They are connected to each other by an electron gun side transition part (20) and a screen side transition part (30), respectively.
  • a female type (7) and a male type (8) are combined to form a saddle type space S between both dies, A block (70) is placed in the center of the space, and a female wire (7) and a male wire (8) are rotated to wind a wire around the block (70).
  • a saddle-type deflection coil (10) having an opening (11) corresponding to the shape of the block (70) is obtained.
  • the magnetic field generated by the saddle type deflection coil was designed to be a barrel (barrel) magnetic field on the electron gun side and a pink magnetic field on the screen side, but especially in large picture tubes.
  • a pin is provided in a wire mold so as to be able to protrude and retract, and the pin is protruded in a winding.
  • a part of the conductive wire group constituting the electron gun side transition part (20) is formed around the opening (11) between the deflection magnetic field generation parts (40) and (40).
  • a saddle-type deflection coil has been proposed in which sub-coils (50) are arranged to obtain the same effect as the structure shown by the chain line in FIG.
  • a method of attaching a magnet to the screen-side end of the deflection yoke is also known.
  • this method when the correction amount of the pincushion distortion becomes large, misconvergence of the side beam occurs.
  • the occurrence of misconvergence is greater at locations near the screen ends (3 o'clock and 9 o'clock) (the corners between the screen corners and 3 o'clock and 9 o'clock).
  • an object of the present invention is to effectively suppress both left and right pincushion distortion and side beam misconvergence without providing a pincushion distortion correction circuit in a color picture tube having a flat screen surface. It is to provide a saddle type deflection coil which can perform the above. Disclosure of the invention
  • an end on the electron gun side and an end on the screen side of the pair of deflection magnetic field generating sections (4) and (4) extending along the tube axis direction are respectively connected to the electron gun side transition section.
  • (2) and the screen-side transition section (3) which are connected to each other by the pair of polarized magnetic field generating sections (4) (4) and the opening section (2) (3) surrounded by the transition section (2) (3).
  • a plurality of sub-coils formed by routing a part of the conductor group constituting the electron gun-side transition part (2) are arranged, and the transition part of each sub-coil is located at a position shifted from each other in the tube axis direction. It is formed.
  • the mis-convergence of the side beam is achieved by the sub-coil (6) having a bridging portion on the screen side. Is suppressed.
  • the sub-coil (6) itself increases left and right pink distortion like the sub-coil (50) of the conventional saddle-type deflection coil (12) shown in FIG. In (10), since the sub-coil (5) having the transition portion is provided on the electron gun side, the winding ratio on the electron gun side is increased by the sub-coil (5), whereby the deflection is performed. Since the sensitivity increases, the magnetic field changes to a barrel shape, and pincushion distortion on the left and right sides is suppressed.
  • the transition portion (51) of the first sub-coil (5) on the electron gun side is about one-third to about one-half of the entire length of the deflection magnetic field generation part (4) along the tube axis direction.
  • the cross-section (61) of the second sub-coil (6) on the screen side is located at a distance of about one-half to about two-thirds of the total length.
  • the arrangement of the first sub-coil (5) increases the effect of suppressing left and right pincushion distortion
  • the arrangement of the second sub-coil (6) increases the effect of suppressing side beam misconvergence. .
  • the cross-section (61) of the second sub-coil (6) on the screen side is Both ends are provided at positions at an angle of 40 ° to 55 ° with respect to an outer edge extending in the tube axis direction of the deflecting magnetic field generators (4) and (4) around the tube axis.
  • the deflecting magnetic field generator (4) contributing to the deflection of the second sub-coil (6) projects sufficiently inward.
  • the number of turns of the deflecting magnetic field generating section (4) in the area where the second subcoil (6) has the greatest influence on the compatibility is connected to the screen side crossing section (3). Since the number of turns is larger than the number of turns of the magnetic field generating section (4), the pincushion distortion on the left and right when the compatibility is optimized is suppressed.
  • FIG. 1 is a front view of a saddle type deflection coil according to the present invention.
  • FIG. 2 is a rear view of the saddle type deflection coil.
  • FIG. 3 is a side view of the saddle type deflection coil.
  • FIG. 4 is a front view showing positions of a block and a pin used in manufacturing the saddle type deflection coil.
  • FIG. 5 is a rear view showing the positions of pins used for manufacturing the saddle type deflection coil.
  • FIG. 6 is a diagram illustrating an equivalent relationship between a saddle-type deflection coil having first and second subcoils and a saddle-type deflection coil having magnets.
  • FIG. 7 is a graph showing the relationship between the position of the magnet and the convergence and pinkness distortion in a saddle-type deflection coil having a magnet.
  • FIG. 8 is a diagram showing measurement positions of left and right pincushion distortions.
  • FIG. 9 is a perspective view of a conventional saddle type deflection coil.
  • FIG. 1 ⁇ is a diagram showing a pair of winding molds used for manufacturing a saddle type deflection coil.
  • FIG. 11 is a front view of a conventional saddle type deflection coil.
  • FIG. 12 is a front view of another conventional saddle-type deflection coil.
  • FIGS. 13 (a) and 13 (b) are diagrams showing left and right pincushion distortions and side beam misconvergence.
  • a saddle type deflection coil according to the present invention is used as a horizontal deflection coil of a deflection yoke, and as shown in FIGS. 1 to 3, a pair of deflection magnetic fields extending along the tube axis direction of a color picture tube.
  • the electron gun-side end and the screen-side end of the generators (4) and (4) are connected to each other by an electron gun-side transition part (2) and a screen-side transition part (3), respectively.
  • the opening (11) surrounded by the pair of deflection magnetic field generators (4) and (4) and both crossover sections (2) and (3) has a part of the conductor group that forms the electron gun side crossover section (2).
  • a first sub-coil (5) and a second sub-coil (6), which are formed by drawing around, are arranged.
  • the transition section (51) of the first sub-coil (5) is provided at the electron gun side transition section by a distance of about 1/3 to about 1/2 of the total length L of the deflection magnetic field generation section (4) along the tube axis direction. It is located away from (2).
  • transition portion (61) of the second sub-coil (6) is disposed at a position separated from the electron gun side transition portion (2) by a distance of about one-half to two-thirds of the entire length, As shown in Fig. 5, both ends of the crossover part (61) are connected to the outer edge extending in the direction of the tube axis of the deflecting magnetic field generating parts (4) and (4) with respect to the tube axis Q as a center and 40 to 55 degrees. At an angle of 0.
  • a winding machine having a pair of winding dies (7) and (8) as shown in FIG. 10 is used. As shown in FIG.
  • the first sub-coil (5) is formed by winding a conductive wire around the opened block (70), and then a pair of pins (71) (71) is protruded from one mold.
  • the second sub-coil (6) is formed by changing the winding path.
  • the positions of the transition portion (51) of the first sub-coil (5) and the transition portion (61) of the second sub-coil (6) are optimized as described above.
  • the magnet M is installed in the opening (11) of the saddle-type deflection coil having no sub-coil as shown in FIG. 6 (b), so that the first sub-coil as shown in FIG. 6 (a)
  • the position of magnet M was changed in the tube axis direction, and the magnitude of convergence and the magnitude of pincushion distortion due to magnet M were measured. .
  • FIG. 7 The saddle-type deflection coil having the first and second sub-coils (5) and (6) shown in FIG. 7 is substantially equivalent to the saddle-type deflection coil having the magnet M shown in FIG.
  • Fig. 7 shows the measurement of the magnitude of the comparison and the magnitude of the pincushion distortion when the position of the magnet M is changed in the tube axis direction in the saddle type deflection coil having the magnet M as shown in Fig. 6 (b). The results are shown.
  • the horizontal axis in FIG. 7 is the distance from the position of the electron gun side transition section (2) to the screen side transition section (3), that is, the total length of the deflection magnetic field generation section (4) in the tube axis direction. L is divided into 12 equal parts.
  • measured data at five different positions are plotted, and the change is approximated by a curve.
  • the crossover part (51) of the first sub-coil (5) should be about 3/3 of the total length L. It is desirable to install it in the range of about 1 to about 1/2, and to install the crossover part (61) of the second subcoil (6) in the range of about 1/2 to about 2/3 of the total length L. I say.
  • the left and right pinch distortions are suppressed mainly by the first subcoil (5), and the misconvergence of the side beam is suppressed mainly by the second subcoil (6). Therefore, it is not necessary to provide a pink distortion correction circuit in the television circuit, thereby reducing costs.
  • a deflection yoke is formed by the saddle-type deflection coil of the present invention for a 21-inch flat display, and magnets are arranged on the left and right sides of the deflection yoke.
  • the deflection yoke is constituted by a conventional saddle-type deflection coil and magnets are arranged above and below the deflection yoke, and the deflection yoke is formed by a conventional saddle-type deflection coil.
  • Conventional example 2 with magnets on the left and right was manufactured, and pincushion distortion on the left and right at coordinate position P (l 8 Omm, 135 mm) with origin at screen center position R (0, 0) as shown in Fig. 8 When X was measured, the following results were obtained.
  • the anode voltage was 28 KV.
  • the left and right pincushion distortions can be significantly reduced as compared with the conventional saddle-type deflection coil. It is possible to omit the distortion correction circuit.

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

L'invention concerne une bobine de déviation de type en selle de cheval montée sur un tube récepteur d'image couleur avec une surface d'écran plat, dans laquelle l'extrémité d'un côté de canon électronique et l'extrémité d'un côté d'écran d'une paire de sections (4, 4) génératrices de champ de déviation s'étendant le long de l'axe du tube sont couplées à l'aide d'une section transversale (2) du côté de canon électronique et d'une section transversale (3) du côté de l'écran. Une ouverture (11) entourée de la paire de sections (4, 4) génératrices de champ de déviation et des deux sections transversales (2, 3) possède une première sous-bobine (5) et une seconde sous-bobine (6). Les sections transversales (51, 61) de chaque sous-bobine sont placées dans la direction axiale du tube, mutuellement non alignées. Ainsi, les contraintes en coussin droite-gauche et la mauvaise convergence sont supprimées efficacement sans un circuit de correction des contraintes en coussin.
PCT/JP2002/008717 2001-08-31 2002-08-29 Bobine de deviation de type en selle de cheval d'un tube recepteur d'image couleur WO2003019605A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001-262992 2001-08-31
JP2001262992 2001-08-31

Publications (1)

Publication Number Publication Date
WO2003019605A1 true WO2003019605A1 (fr) 2003-03-06

Family

ID=19089816

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2002/008717 WO2003019605A1 (fr) 2001-08-31 2002-08-29 Bobine de deviation de type en selle de cheval d'un tube recepteur d'image couleur

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Country Link
WO (1) WO2003019605A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01161644A (ja) * 1987-12-18 1989-06-26 Victor Co Of Japan Ltd 偏向ヨーク
JPH0785813A (ja) * 1993-09-17 1995-03-31 Matsushita Electric Ind Co Ltd 偏向ヨーク
JPH08129974A (ja) * 1994-10-31 1996-05-21 Sony Corp 偏向装置
JP2000090854A (ja) * 1998-09-17 2000-03-31 Hitachi Media Electoronics Co Ltd 偏向ヨーク
JP2000106107A (ja) * 1998-09-30 2000-04-11 Hitachi Media Electoronics Co Ltd 偏向ヨーク

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01161644A (ja) * 1987-12-18 1989-06-26 Victor Co Of Japan Ltd 偏向ヨーク
JPH0785813A (ja) * 1993-09-17 1995-03-31 Matsushita Electric Ind Co Ltd 偏向ヨーク
JPH08129974A (ja) * 1994-10-31 1996-05-21 Sony Corp 偏向装置
JP2000090854A (ja) * 1998-09-17 2000-03-31 Hitachi Media Electoronics Co Ltd 偏向ヨーク
JP2000106107A (ja) * 1998-09-30 2000-04-11 Hitachi Media Electoronics Co Ltd 偏向ヨーク

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