A method for adjusting the horizontal coil of deflection yoke

A deflecting coil and horizontal line technology is applied in the manufacture of magnetic deflection devices, electrode devices and related components, etc. It can solve the problems of poor convergence grade, waste materials and labor, and affect the competitive advantage of products, and achieve less usage and improved convergence grade. Effect

Inactive Publication Date: 2011-12-14
CAIHONG GRP ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above methods, convergence can only be taken into account, take the middle, and at the same time can not solve the contradiction between line width and inductance adjustment, that is, the problem of small line width and low inductance, resulting in the coil not being able to reach the best state, although the convergence problem is finally resolved by the correction material Debugging operations to make corrections, but it consumes materials and labor, which affects the product's competitive advantage
In short, the existing method has the disadvantages of 6.12 point G loss and poor convergence quality

Method used

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  • A method for adjusting the horizontal coil of deflection yoke
  • A method for adjusting the horizontal coil of deflection yoke

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Experimental program
Comparison scheme
Effect test

Embodiment 1 7

[0028] Embodiment one 37cm15X deflection yoke

[0029] The first step is to measure the diameter a of the neck of the outer cavity of the horizontal coil, the diameter of the opening of the outer cavity of the horizontal coil d, the diameter of the neck of the inner cavity of the horizontal coil b, and the diameter of the opening of the inner cavity of the horizontal coil coil c, where a=36mm, b= 5mm, c=52mm, d=77mm;

[0030] The second step, according to the following formula (1), (2), calculate K1, K2,

[0031] a / d=K1 (1)

[0032] b / c=K2 (2)

[0033] K1=a / d=36 / 77=0.4675 is fixed value,

[0034] K2=b / c=5 / 52=0.096;

[0035] The third step is to adjust b from 5mm to b’=16mm, c from 52mm to c’=57mm, and calculate K2’

[0036] K2'=b' / c'=16 / 57=0.28 then

[0037] K1-K2'=0.1475 K1-K2=0.3695

[0038] K1-K2'

[0039] Advantages after adjustment: ①The green drop angle is changed from 0.8mm to 0.5mm; ②Half-point convergence is 1.0mm, reduced to 0.5mm; ③XH+convergence is 0....

Embodiment 2 4

[0040] Embodiment two 54cmFS deflection yoke

[0041] The first step is to measure the diameter a of the neck of the outer cavity of the horizontal coil, the diameter of the opening of the outer cavity of the horizontal coil d, the diameter of the neck of the inner cavity of the horizontal coil b, and the diameter of the opening of the inner cavity of the horizontal coil coil c, where a=31mm, b= 4mm, c=52mm, d=72mm;

[0042] The second step, according to the following formula (1), (2), calculate K1, K2,

[0043] a / d=K1 (1)

[0044] b / c=K2 (2)

[0045] K1=a / d=31 / 72=0.43 is fixed value,

[0046] K2=b / c=4 / 52=0.076;

[0047] The third step is to adjust b from 4mm to b’=7mm; adjust c from 52mm to c’=57mm; calculate K2’

[0048] K2'=b' / c'=7 / 57=0.1228 then

[0049] K1-K2'=0.3072 K1-K2=0.354

[0050] K1-K2'

[0051] Advantages after adjustment: ①Remove the pins at the neck and opening; ②The upper and lower trapezoidal distortion is adjusted from up + down = 7mm to up + d...

Embodiment 3 4

[0052] Embodiment 3 Deflection yoke of 64cmPF

[0053] The first step is to measure the diameter a of the neck of the outer cavity of the horizontal coil, the diameter of the opening of the outer cavity of the horizontal coil d, the diameter of the neck of the inner cavity of the horizontal coil b, and the diameter of the opening of the inner cavity of the horizontal coil coil c, where a=38mm, b= 12mm, c=55mm, d=85mm;

[0054] The second step, according to the following formula (1), (2), calculate K1, K2,

[0055] a / d=K1 (1)

[0056] b / c=K2 (2)

[0057] K1=a / d=38 / 85=0.447 is fixed value,

[0058] K2=b / c=12 / 55=0.218:

[0059] The third step is to adjust b from 12mm to b'=18mm; adjust c from 55mm to c'=57mm; calculate K2'

[0060] K2'=b' / c'=18 / 57=0.315

[0061] K1-K2'=0.132 K1-K2=0.229

[0062] Then K1-K2'

[0063] Advantages after adjustment: ①The pincushion shape of the half-point horizontal line changes from 1.0mm to 0.6mm; ②The pincushion shape of 4 corners chang...

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Abstract

A method for adjusting the horizontal coil of a deflection yoke, which adopts the method of controlling the outer diameter of the coil opening and the neck, the ratio of the inner cavity diameter, and the extension curvature of the neck and the opening, so as to achieve the purpose of significantly improving the dynamic performance and solving the contradiction of static adjustment. According to the conventional adjustment method, the problems of half-dot size, green drop-off, horizontal line pillow shape, vertical line barrel pillow shape reverse, etc., under the same conditions, the amount of material used is less, the convergence grade is high, and the pinning method can be replaced within a certain range. It greatly improves the efficiency of the equipment; at the same time, it converts the traditionally abstract barrel-shaped field and pincushion-shaped field into intuitive size data comparison, which is convenient and fast to adjust.

Description

technical field [0001] The invention relates to the field of color picture tube deflection coil manufacturing, in particular to a method for adjusting the horizontal coil of the deflection coil. Background technique [0002] In the structural design of the display used in the TV, the problems existing in the horizontal coil of the deflection coil are: the neck colt design is generally between 5-7mm, the G drop at 6.12 points, the horizontal line pillow shape at the half point, and the vertical line barrel pillow The shape is reversed, which affects the grade of dynamic convergence. The current adjustment methods are as follows: 1. Increase the coil gap; make the pillow shape of the horizontal line smaller, causing the barrel shape of the vertical line to become larger, otherwise, and vice versa; The amount becomes larger, otherwise, vice versa; 3. Raise the mountain part of the forming mold, the half point becomes smaller, the G drop becomes smaller, the barrel shape become...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J9/236H01J29/76
Inventor 蔺泾丽李晓峰
Owner CAIHONG GRP ELECTRONICS CO LTD
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