KR19980040956A - Screen distortion and convergence automatic correction toroidal coil, its winding method and device - Google Patents

Abstract

The present invention provides a screen distortion and convergence automatic correction toroidal coil, a winding method thereof, and an apparatus thereof.

The toroidal coil has a horizontal deflection coil and barrel vertical deflection which form a pincushion-type horizontal deflection magnetic field to deflect three electron beams focused and accelerated by the inline type electron guns arranged in a horizontal direction across the screen. In a toroidal coil of a self-converging cathode ray tube having a vertical deflection coil forming a magnetic field, the vertical deflection field becomes a stronger barrel type on the electron gun side, and a weaker barrel or pincushion type on the screen side, thereby providing a separate magnetic field. Slip fasteners 51, 52, and 53 are fixed to the winding structure to automatically correct the top, bottom, left and right screen distortions without forming, and the coil having the insulating layer and the bonding layer is wound. By applying a current to the toroidal coil to heat and cool to solidify, and remove the slip fasteners 51, 52, and 53. Characterized in that W is formed.

Description

Screen distortion and convergence automatic correction toroidal coil, its winding method and device

The present invention relates to a toroidal coil mounted on a collar receiving tube with an inline electron gun, its winding method, and its apparatus, in particular, the screen distortion and convergence automatic correction for automatically correcting convergence and screen distortion by a deflection magnetic field. The present invention relates to a toroidal coil, a winding method thereof, and a device thereof.

In FIG. 1, a panel 12 (see FIG. 2) having a fluorescent screen 20 formed on a rear surface of a face plate 18 and an electron gun 11 for forming electron beams 19a and 19b and emitting them toward the screen 20. Collar cathode tube having a neck 14 having an inner portion thereof, a pennel 13 connecting the neck 14 and the panel 12, and a deflection yoke assembly 17 mounted at the neck-funnel connection portion. 10 is shown.

The funnel 13 is formed with an inner conductive layer (not shown) in contact with the anode terminal 15. The shadow mask 16 having a plurality of apertures or slits 16a formed in a predetermined arrangement is detachably mounted to the panel 12 at a predetermined distance from the screen 20.

The deflection yoke assembly 17 has a pair of film-like horizontal deflection members and a vertical deflection member, respectively. The horizontal deflection member forms a horizontal deflection magnetic field to horizontally deflect the motion paths of the electron beams 19a and 19b when a horizontal deflection current is applied, while the vertical deflection member is configured to supply the electron beam when a vertical deflection current is applied. Vertical deflection magnetic fields are formed to vertically deflect the motion of 19a and 19b.

By changing the deflection magnetic field in a suitable manner, it is preferable that electron beams 19a and 19b be scanned over the entire surface of the screen 22 to form a two-dimensional image in the cathode ray tube panel 12 with an optimum deflection sensitivity. In addition, the deflection caused by the magnetic field forms a pincushion magnetic field by the horizontal deflection member and a barrel magnetic field by the vertical deflection member, thereby easily converging three kinds of electron beams of the inline electron gun.

Because of this magnetic field distribution, screen pincushion-type left and right screen distortions are generated.However, a parabolic phase current synchronized with a vertical magnetic field is supplied to the horizontal deflection coil by an external circuit to correct this left and right screen distortion. Distortion phenomenon appears.

According to Japanese Patent Application Publication No. 4-1986 for solving this problem, as shown in Fig. 3, the horizontal deflection coils 3 arranged above and below the arrangement direction HH of the inline-type electron gun are located on the upper and lower sides of the reference line on the same side. Magnets 2a and 2b of different lengths are respectively installed to perform magnetic field adjustment. Left and right failure type distortion is corrected by a pincushion magnetic field formed by the long magnet 2a. At this time, the upper and lower horizontal lines are also corrected by the pincushion magnetic field to correct the vertical failure type distortion, but the vertical and horizontal distortions are corrected by the magnet 2b having a short length due to the flattening and optical deflection angle of the screen.

However, the above-described magnets have a problem in that their lengths or poles must be changed in order to adjust the screen distortion effectively and appropriately.

The up-down failure type distortion is effectively corrected by the above-described horizontal pincushion magnetic field. However, the left and right failure type distortion becomes a barrel type due to the convergence characteristic of the vertical deflection field, thereby forming a raster that makes the distortion even more severe. In order to correct the left and right distortion with convergence, only the screen side magnetic field of the vertical deflection magnetic field needs to be pincushioned. As shown in FIG. 4, when the toroidal coil is wound around the core 40, the coil is rotated about the axis 41 so as to be wound at right angles to both ends of the core 40. There is a problem that one vertical deflection field cannot be obtained.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and a screen distortion and convergence automatic correction toroidal coil, a winding method thereof, and an apparatus, which can automatically correct convergence and left and right screen distortion even in a flattened and optically deflected cathode ray tube. The purpose is to provide.

1 is a partial cross-sectional plan view schematically showing the configuration of a color cathode ray tube,

2 is a partial cross-sectional view of the screen of FIG. 1;

3 is a front view of a toroidal coil, a winding method thereof, and a device for adjusting screen distortion by a magnet;

4 is a side view showing the structure of a conventional toroidal coil;

5 is an explanatory diagram for explaining a winding method of a toroidal coil according to the present invention;

6 is a schematic structural diagram showing an apparatus of the present invention;

Fig. 7 is a sectional view showing the structure of a coil for applying to the present invention.

* Description of the symbols for the main parts of the drawings *

10 cathode ray tube 11 electron gun 12 panel

13 funnel 14 neck 15 anode terminal

16: shadow mask 18: face plate 19a, 19b: electron beam

20: screen 40, 50: core 41, 54, 55: rotation axis

51, 52, 53: slip protection 70: right winding device 80: left winding device

In order to achieve this object, the method of winding the screen distortion and convergence automatic correction toroidal coil according to the present invention is to deflect three electron beams focused and accelerated by an inline type electron gun arranged in a horizontal direction across the screen. In a method of winding a toroidal coil of a self-converging cathode ray tube having a horizontal deflection coil forming a pincushion-type horizontal deflection magnetic field and a vertical deflection coil forming a barrel-type vertical deflection magnetic field, the vertical deflection field is more on the electron gun side. It has a strong barrel type, and a weaker barrel type or pincushion type on the screen side, and a slip fastener (51, 52) with a structure of a toroidal coil for automatically correcting up, down, left and right screen distortions without forming a separate magnetic field. 53) winding a coil having an insulation layer and a bonding layer; After winding, solidifying by applying current to the toroidal coil to heat and cool; And it characterized in that it comprises a step of removing the slip fasteners (51, 52, 53).

In addition, the present invention is a horizontal deflection coil and barrel-type vertical deflection magnetic field to form a pincushion-type horizontal deflection magnetic field so as to deflect three electron beams focused and accelerated by the inline type electron guns arranged in a horizontal direction across the screen. In a toroidal coil of a self-converging cathode ray tube having a vertical deflection coil, the vertical deflection field becomes a stronger barrel type on the electron gun side and a weaker barrel or pincushion type on the screen side to form a separate magnetic field. Without this, the slip fasteners 51, 52, and 53 are fixed to the winding structure in order to automatically correct the top, bottom, left and right screen distortions, and the coil having the insulating layer and the bonding layer is wound. The current is applied to the toroidal coil to be solidified by heating and cooling, and by removing the slip fasteners 51, 52, and 53 The present invention provides a screen distortion and convergence automatic correction toroidal coil.

In addition, the present invention provides a horizontal deflection coil and a barrel-type vertical deflection magnetic field forming a pincushion-type horizontal deflection coil to deflect three electron beams focused and accelerated by an inline-type electron gun arranged in a horizontal direction over the entire screen. Claims [1] A winding apparatus of a toroidal coil of a self-converging cathode ray tube having a horizontal deflection coil, comprising: a nozzle (60) for supplying a coil having an insulating layer and a bonding layer; And forward by the reciprocating means (74, 84) to fix the core (50) with a fixed finger (75), drive the motor 90 around the shaft 54, rotate the rotary shaft 71 to selectively rotate the coil Winding from either side, the anti-slip fingers 87, 77 in the opposite direction to contact the core 50 in close contact with the anti-slip fingers (87, 77) to prevent slipping of the coil reciprocating means (86) Right and left windings 70, 80 operating as 76; And a motor 90 for inclining and driving the right and left winding devices 70 and 80 to rotate about the shafts 54 and 55 to selectively wind the coil to the right and left cores. Provides winding device for screen distortion and convergence automatic correction toroidal coil.

Hereinafter, with reference to the accompanying drawings will be described in detail the configuration and operation of the embodiments of the present invention.

5 is a front view of a toroidal coil according to the present invention.

The toroidal coil has a horizontal deflection coil and barrel vertical deflection which form a pincushion-type horizontal deflection magnetic field to deflect three electron beams focused and accelerated by the inline type electron guns arranged in a horizontal direction across the screen. In a toroidal coil of a self-converging cathode ray tube having a vertical deflection coil forming a magnetic field, and a winding method thereof, and apparatus therefor, the vertical deflection magnetic field is automatically corrected for vertical, horizontal and horizontal distortion without forming a separate magnetic field. Is wound to a stronger barrel type on the electron gun side, and a weaker barrel or pincushion type on the screen side.

Accordingly, after the slip prevention ports 51, 52, and 53 are inserted and fixed to prevent slipping during winding at predetermined positions of the upper and lower ends of the core 50 in order to prevent slipping during winding, the coil is solidified by applying a current. It is made by removing the slip fasteners (51, 52, 53).

For the vertical deflection magnetic field of the above-described structure to the core 50 is wound twice around the inclined winding center axis (54, 55). The position or tilt angle of the central axes 54 and 55 is determined by the structure of the coil. That is, as described above, the vertical deflection field is wound to a stronger barrel type on the electron gun side, and to a weaker barrel type or pincushion type on the screen side.

With the above-described configuration of the core 50, it is possible to wind closer to the horizontal axis X on the electron gun side and closer to the vertical axis Y on the screen side without collapse of the coil.

The coil for applying to the present invention is composed of a coil core 100, an insulating layer 101 and a bonding layer 102 as shown in FIG.

6 shows a schematic configuration diagram showing the apparatus of the present invention.

The winding device includes a nozzle 60 and right and left winding devices 70 and 80.

The nozzle 60 supplies a coil having the above-described insulating layer and bonding layer, and is connected to a reciprocating means (not shown) to allow movement to the winding side.

The right and left winding devices 70 and 80 are advanced by the reciprocating means 74 and 84 to fix the core 50 with the fixing finger 75 and drive the motor 70 around the shaft 54, Rotate the rotary shaft 71 to selectively wind the coil on either side, and to prevent the anti-slip fingers 87 and 77 (the left in FIG. 6) in close contact with the core 50 to prevent the coil from slipping. The anti-slip fingers 87 and 77 in the opposite directions are operated by the reciprocating means 86 and 76.

As described above, the right and left winding devices 70 and 80 are rotated and wound on the right side by the driving motor 90 of the right and left winding devices 70 and 80, which are not shown in detail, and then the current is applied to the coil. Application, the coil is solidified. Subsequently, the right and left winding apparatuses 70 and 80 are operated in reverse as described above, and the motor 90 is inclined and driven so as to rotate about the shaft 55 to wind a coil on the left core. The manufacture is completed by applying a current to the coil wound on the left side and solidifying the coil.

Therefore, according to the configuration and operation of the toroidal coil, the winding method thereof, and the device of the present invention as described above, pincushion the horizontal deflection coil and barrel the vertical deflection field to achieve self-convergence, and furthermore, the screen has a simple structure. The enhanced pincushion magnetic field on the side and the barrel magnetic field on the electron gun side not only provide a toroidal coil that can correct distortion on the left and right sides of the screen, but also automatically produce the toroidal coil. have.

Claims (3)

Vertical deflection coil and horizontal deflection magnetic field to form a pincushion type horizontal deflection magnetic field so as to deflect three electron beams focused and accelerated by an inline type electron gun arranged in a horizontal direction across the screen. In the winding method of a toroidal coil of a self-converging cathode ray tube having a coil, The vertical deflection field becomes a stronger barrel type on the electron gun side, and a weaker barrel type or pincushion type on the screen side, and has a structure of a toroidal coil for automatically correcting up, down, left and right screen distortions without forming a separate magnetic field. Fixing the slip fixtures 51, 52, and 53 so as to wind the windings of the coil having the insulating layer and the bonding layer; After winding, solidifying by applying current to the toroidal coil to heat and cool; And Screen distortion and convergence automatic correction toroidal coil winding method comprising the step of removing the slip fasteners (51, 52, 53). Vertical deflection coil and horizontal deflection magnetic field to form a pincushion type horizontal deflection magnetic field so as to deflect three electron beams focused and accelerated by an inline type electron gun arranged in a horizontal direction across the screen. In a toroidal coil of a self-converging cathode ray tube having a coil, The vertical deflection field becomes a stronger barrel type on the electron gun side, and a weaker barrel type or pincushion type on the screen side, and has a structure of a toroidal coil for automatically correcting up, down, left and right screen distortions without forming a separate magnetic field. The slip fasteners 51, 52, and 53 are fixed to be wound to wind a coil having an insulating layer and a bonding layer, and after the winding, the coil is solidified by heating and cooling by applying a current to the toroidal coil. 51, 52, 53) formed by removing the screen distortion and convergence automatic correction toroidal coil. Vertical deflection coil and horizontal deflection magnetic field to form a pincushion type horizontal deflection magnetic field so as to deflect three electron beams focused and accelerated by an inline type electron gun arranged in a horizontal direction across the screen. In the winding device of a toroidal coil of a self-converging cathode ray tube having a coil, A nozzle 60 for supplying a coil having an insulating layer and a bonding layer; Advance by the reciprocating means 74, 84 to fix the core 50 with a fixed finger 75, drive the motors 72, 82 around the axis 54, rotate the rotary shaft 71 to selectively select the coil Winding from either side, and the anti-slip fingers 87, 77 in the opposite direction to contact the anti-slip fingers (87, 77) in close contact with the core 50 to prevent the slip of the coil reciprocating means ( Right and left winding devices 70, 80 operating with 86, 76; And A screen comprising a motor 90 for inclining and driving the right and left winding devices 70 and 80 to rotate about the axes 54 and 55 to selectively wind the coil to the right and left cores Winding device of a wedge and convergence automatic correction toroidal coil.