KR930007881Y1 - Deflection yoke - Google Patents

Abstract

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Description

Deflection yoke

1 is a front view schematically showing a general planar yoke.

2a, b is a front view and a side view showing a flat yoke according to the present invention.

3 is a plan view showing a distortion correction device for a deflection yoke according to the present invention.

4 is a sectional view showing the main parts of the deflection yoke distortion correction apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

11: deflection yoke 12: neck portion

13 screen portion 14 coil separator

15: horizontal deflection coil 16: ferrite core

17: core clamp 18: mounting groove

19: support piece 20a, 20b: coupling groove

21: correction device 22a, 22b: correction coil

23a, 23b: bobbin 24a, 24b: ring core

V11, V12: vertical deflection coil

The present invention relates to a deflection yoke, and more specifically, a correction device for forming a pincushion magnetic field is installed on the screen of the deflection yoke to correct distortion in the left and right sides of the screen, and a barrel magnetic field is formed on the vertical deflection coil. It is related to a deflection yoke which can improve the characteristics of the screen since the misconvergence on the screen is corrected.

Generally, TV. The deflection yoke 1 used for a cathode ray tube (CRT) such as a receiver or a monitor has a horizontal deflection inside the coil separator 4 including the net part 2 and the screen part 3, as shown in FIG. A coil (not shown) is wound and the ferrite core 5 wound around the vertical deflection coils V1 and V2 is assembled by the clamp 6, and the horizontal and vertical deflection coils V1 are assembled. As the power is applied to V2, the magnetic field is generated to determine the position of the R (red), G (green), and B (blue) electron beams emitted from the electron gun. The misconvergence phenomenon occurs on the screen due to the error caused by the mechanism and the error of the deflection yoke 1 itself.

Therefore, although various correction means are used to correct the misconvergence, the electron gun generates a gun-separation, and the cathode ray tube (not shown) itself is not a plane but a spherical surface. The pincushion itself is required for the horizontal deflection coil and the Barrel magnetic field is required for the vertical deflection coils V1 and V2 to match the convergence of the phases.

In the case of the horizontal deflection coils, the pincushion magnetic field cancels each other from the curved surface of the cathode ray tube, so there is no risk of distortion. On the left and right side of the distortion type distortion (pincushion) is more severe distortion will appear.

Conventionally, a pincushion magnetic field is formed on the vertical deflection coil to prevent distortion on the screen, but misconversion in the form of a pincushion is generated on the screen. In contrast, when a barrel magnetic field is formed on the vertical deflection coil, the miscon Versions are prevented but rather distortion occurs. Therefore, in order to prevent the distortion and misconvergence as described above, a drum core and a magnet in which the correction coil is wound must be separately mounted on the deflection yoke. As well as the production cost increases, the deflection force varies depending on the magnetic strength of the drum core and magnet, so that the distortion and misconvergence cannot be easily corrected.

The object of the present invention is to solve the above problems, and the object of the present invention is to install a pair of bobbins on which a correction coil is wound, mounted on the correction device to form a pincushion magnetic field, thereby providing vertical deflection. As the current is applied to the coil, the pincushion magnetic field formed in the correction coil of the correction device is adjusted to easily correct the distortion on the screen, and the misconvergence on the screen is corrected by adjusting the distribution and winding amount of the vertical deflection coil. It is to provide a deflection yoke that can be improved.

A feature of this invention for achieving the above object is that the correction coil is wound in installing a deflection yoke in the cathode ray tube, in which horizontal and vertical deflection coils are mounted inside and outside of the coil pessulator consisting of a neck portion and a screen portion. An adjustment device for mounting the bobbins on both sides of the pair of ring cores, a support piece formed on the coil separator to support the adjustment device, and a yoke in which a distortion and misconvergence on the screen are respectively corrected. .

Hereinafter, embodiments of this invention will be described in detail by the accompanying drawings.

2 to 4 are diagrams for explaining the deflection yoke according to the present invention. First, the deflection yoke 11 is horizontal to the inside of the coil separator 14 including the net part 12 and the screen part 13. The deflection coil 15 is wound, and the ferrite core 16 wound around the vertical deflection coils V11 and V12 is assembled by the core clamp 17.

A support piece 19 in which a mounting groove 18 is formed is formed in a lower portion of the coil separator 14 on which the vertical deflection coils V11 and V12 are mounted, and a coupling groove is formed on an outer circumferential surface of the coil separator 14. 20a and 20b are formed.

In addition, a correction device 21 is installed between the upper surface of the screen portion 13 and the support piece 19 of the coil separator 14, and the correction device 21 is wound around the correction coils 22a and 22b. The losing bobbins 23a and 23b are mounted on both pairs of ring cores 24a and 24b, respectively, and the correction coils 22a and 22b of the correction device 21 are vertical deflection coils V11. And (V12), respectively. At this time, both ends of the bobbin (23a), (23b) mounted on the adjusting device 21 is fitted into the coupling groove (20a, 20b) of the coil separator 14, the bobbin (23a), ( Both sides of 23b) are supported by the mounting groove 18 of the support piece 19 to prevent flow.

When the deflection yoke 11 is mounted on a cathode ray tube such as a TV receiver or a monitor and the power is applied to the horizontal and vertical deflection coils 15, V11, and V12, the vertical deflection coil V11 is applied. The pincushion magnetic field is formed on the correction coils 22a and 22b of the correction device 21 connected to V12 to prevent distortion occurring on the left and right sides of the screen.

At this time, the upper surfaces of the ring cores 24a and 24b of the compensator 21 are supported by the support pieces 19 of the coil separator 14 to prevent flow, and both ends of the bobbins 23a and 23b. The coil separator 14 fits into the coupling grooves 20a and 20b of the coil separator 14, and both sides are firmly mounted while being supported by the mounting groove 18 of the support piece 19, thereby improving the assemblability of the product and correcting coil. Pincushion magnetic fields by (22a) and (22b) are formed uniformly, so that distortion correction can be easily performed.

On the other hand, due to the influence of the pincushion magnetic fields formed on the correction coils 22a and 22b of the correction device 21, a misconvergence phenomenon in which the R and B beams are not exactly matched is left fine. According to the winding forms of the deflection coils V11 and V12, it is easily adjusted by adjusting the coil distribution and the winding amount, so that distortion and misconvergence on the screen can be efficiently corrected.

As described above, the present invention is provided with a correction device in which a pincushion magnetic field is formed on the upper surface of the screen of the deflection yoke, so that the pincushion magnetic field is adjusted according to the current applied to the vertical deflection coil so that the distortion on the screen is easily corrected and vertical It is a useful design that can improve the characteristics of the screen by correcting misconvergence on the screen with the deflection coil.

Claims (2)

In a deflection yoke in which horizontal and vertical deflection coils are mounted in and out of a coil separator including a neck and a screen, a correction coil for correcting distortion and misconvergence generated on a screen on the upper surface of the screen of the coil separator. The deflection yoke is provided with an adjusting device in which the wound bobbin is fitted to a pair of ring cores, and a support plate protrudes from an outer lower end of the coil separator to prevent separation of the adjusting device mounted on the upper surface of the screen unit. The deflection yoke of claim 1, wherein the bobbin of the adjusting device is fitted into a coupling groove formed on the screen portion and a mounting groove formed on the support piece to prevent left and right rotations and flows.