KR20040068411A - Method for modulating size of picture on the crt - Google Patents

Method for modulating size of picture on the crt Download PDF

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Publication number
KR20040068411A
KR20040068411A KR1020030005045A KR20030005045A KR20040068411A KR 20040068411 A KR20040068411 A KR 20040068411A KR 1020030005045 A KR1020030005045 A KR 1020030005045A KR 20030005045 A KR20030005045 A KR 20030005045A KR 20040068411 A KR20040068411 A KR 20040068411A
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KR
South Korea
Prior art keywords
coil
ray tube
cathode ray
size
coma
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KR1020030005045A
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Korean (ko)
Inventor
박용수
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파츠닉(주)
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Priority to KR1020030005045A priority Critical patent/KR20040068411A/en
Publication of KR20040068411A publication Critical patent/KR20040068411A/en

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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70Arrangements for deflecting ray or beam
    • H01J29/72Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76Deflecting by magnetic fields only
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00Details of cathode ray tubes or electron beam tubes
    • H01J2229/70Electron beam control outside the vessel
    • H01J2229/703Electron beam control outside the vessel by magnetic fields
    • H01J2229/7032Conductor design and distribution
    • H01J2229/7033Winding
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00Apparatus 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
    • H01J9/236Manufacture of magnetic deflecting devices for cathode-ray tubes

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

Abstract

PURPOSE: A method is provided to easily modulate the size of the vertical end picture on cathode ray tube, by controlling turns of the coma coil mounted on a deflection yoke. CONSTITUTION: A cathode ray tube comprises a deflection yoke where a coma coil(120) is mounted. The coma coil has a double structure including a primary coil(122a) and a secondary coil(122b). The size of the picture on the cathode ray tube is modulated by controlling turns of the secondary coil of the coma coil. The size of the picture on the cathode ray tube is reduced when the turns of the secondary coil decrease, and the size of the picture on the cathode ray tube is enlarged when the turns of the secondary coil increase.

Description

음극선관의 화상 크기 조절방법{METHOD FOR MODULATING SIZE OF PICTURE ON THE CRT}How to adjust image size of cathode ray tube {METHOD FOR MODULATING SIZE OF PICTURE ON THE CRT}

본 발명은 음극선관의 화상 크기 조절방법에 관한 것으로, 더욱 상세하게는 음극선관의 스크린에 구현되는 수직단의 화상 크기를 조절하여 정확한 화상 구현을 이룰 수 있도록 한 음극선관의 화상 크기 조절방법에 관한 것이다.The present invention relates to a method for adjusting the image size of a cathode ray tube, and more particularly, to an image size adjusting method for a cathode ray tube to achieve an accurate image by adjusting an image size of a vertical stage implemented on a screen of a cathode ray tube. will be.

일반적으로 편향요크는 음극선관의 외주에 장착되어 음극선관의 전자총으로부터 발사되는 전자빔을 편향시켜 정확도 있는 화상을 구현되게 한다.In general, the deflection yoke is mounted on the outer circumference of the cathode ray tube so as to deflect the electron beam emitted from the electron gun of the cathode ray tube to realize an accurate image.

이러한 편향요크는 음극선관으로부터 발사되는 전자빔을 수평방향으로 편향시키는 수평편향코일과, 전자빔을 수직방향으로 편향시키는 수직편향코일과, 두 편향코일의 위치를 정밀도 있게 구분함과 동시에 상호 전기적으로 절연될 수 있도록 하는 코일스페이서로 구성된다.Such a deflection yoke has a horizontal deflection coil for deflecting an electron beam emitted from a cathode ray tube in a horizontal direction, a vertical deflection coil deflecting an electron beam in a vertical direction, and precisely discriminates the positions of the two deflection coils and is electrically insulated from each other. It consists of a coil spacer to make it possible.

이때, 상기 음극선관의 전자총에서 발사되는 R(Red), G(Green), B(Blue)의 전자빔은 편향요크에 의하여 소정 각도로 편향되어 섀도우마스크에 형성된 관통공을 통과해서 패널(panel)의 내주에 장착된 형광면 각각의 스트라이프(stripe)에 봉착하여 발광함으로써 텔레비전의 스크린에 정상적인 화상을 구현한다.At this time, the electron beams of R (Red), G (Green), and B (Blue) emitted from the electron gun of the cathode ray tube are deflected at a predetermined angle by the deflection yoke and pass through the through-holes formed in the shadow mask. A normal image is realized on the screen of the television by sealing light on a stripe of each fluorescent surface mounted on the inner circumference.

한편, 기존에는 스크린에 정상적인 화상 구현이 이루어지지 않는 경우 편향요크의 정특성(static characteristic)만을 이용해서 화상의 크기를 조절하였다. 예를 들어, A제품을 사용하였을 때 정상적인 화상이 구현되었으나 B제품을 사용하였을 때는 화상 크기가 달라져 상측부 또는 하측부가 잘린 화상이 구현되었다고 가정하자. 이런 경우 기존에는 임피던스의 용량을 정해진 값으로 정확하게 맞추어 즉, 정특성에 매칭(matching)되도록 하는 방법을 통해 화상 크기를 조절하였다.On the other hand, when a normal image is not realized on the screen, the image size is adjusted using only the static characteristic of the deflection yoke. For example, suppose that the normal image is realized when the product A is used, but the image is cut when the upper part or the lower part is implemented because the image size is different when the product B is used. In this case, conventionally, the image size is adjusted by precisely adjusting the capacitance of the impedance to a predetermined value, that is, matching the static characteristics.

그런데, 스크린에 정확한 화상을 구현하기 위한 기존의 화상 크기 조절방법은 정특성에 대한 값을 정확하게 유지시켜야 하는 불편함이 있었으며 정특성이 일치하는 경우라도 다른 부분이 변해서 스크린에 구현되는 화상 크기가 달라질 수 있는 문제점이 있었다.However, the conventional image resizing method for realizing an accurate image on the screen is inconvenient to accurately maintain the value for the static characteristics, and even when the static characteristics match, other parts are changed and the image size implemented on the screen is changed. There was a problem that could be.

본 발명은 상기와 같은 문제점을 해결하기 위하여 제안된 것으로서, 그 목적으로 하는 바는 화질을 떨어뜨리는 코마수차의 원인을 제거하기 위하여 편향요크 상에 장착시키는 코마코일의 권선 수를 조절함으로써 음극선관의 수직단 화상 크기를 용이하게 조절할 수 있도록 한 음극선관의 화상 크기 조절방법을 제공하는데 있다.The present invention has been proposed to solve the above problems, and its purpose is to adjust the number of windings of the coma coil mounted on the deflection yoke in order to eliminate the cause of the coma aberration that degrades the image quality of the cathode ray tube. The present invention provides a method for adjusting the image size of a cathode ray tube to easily adjust the vertical image size.

도 1은 일반적인 편향요크를 나타낸 요부 사시도.Figure 1 is a perspective view of the main portion showing a general deflection yoke.

도 2는 본 발명에 적용되는 코마코일을 나타낸 단면도.Figure 2 is a cross-sectional view showing a coma coil applied to the present invention.

* 도면의 주요 부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

100: 편향요크 110: 코일스페이서100: deflection yoke 110: coil spacer

120: 코마코일 121: 보빈120: coma coil 121: bobbin

122: 코일 122a: 1차코일122: coil 122a: primary coil

122b: 2차코일122b: secondary coil

상기와 같은 목적을 달성하기 위한 본 발명은 1차코일 및 2차코일의 이중권선구조로 형성된 코마코일이 장착된 편향요크를 포함하여 이루어진 음극선관의 화상 크기 조절방법에 있어서,In the present invention for achieving the above object, in the image size adjustment method of a cathode ray tube comprising a deflection yoke equipped with a coma coil formed of a double winding structure of the primary coil and the secondary coil,

상기 코마코일의 2차코일측 권선 수를 가감하여 화상 크기를 조절하는 것을 그 기술적 특징으로 한다.The technical feature is to adjust the image size by subtracting the number of turns of the secondary coil side of the coma coil.

이하, 본 발명에 따른 바람직한 실시예를 도면을 참조하면서 상세히 설명하면 다음과 같다.Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to the drawings.

도 1은 일반적인 편향요크를 나타낸 요부 사시도이고, 도 2는 본 발명에 적용되는 코마코일을 나타낸 단면도이다.1 is a perspective view illustrating main parts of a general deflection yoke, and FIG. 2 is a cross-sectional view illustrating a coma coil applied to the present invention.

본 발명에 따른 음극선관의 화상 크기 조절방법은 먼저 도 1 및 도 2에 나타낸 바와 같이, 코일스페이서(110)의 상면에 텔레비전의 스크린 전역에 걸쳐서 화질을 떨어뜨리는 원인이 되는 코마수차를 제거하기 위한 코마코일(120)을 구성한 편향요크(100)가 구비되어야 한다.The method for adjusting the image size of a cathode ray tube according to the present invention, as shown in FIGS. 1 and 2, for removing the coma aberration that causes the image quality to fall across the entire screen of the television on the upper surface of the coil spacer 110. Deflection yoke 100 having a coma coil 120 should be provided.

여기서, 상기 코마코일(120)은 보빈(121)에 코일(122)을 권선한 것으로, 1차코일(122a) 및 2차코일(122b)의 이중권선구조로 되어 있으며, 이는 수직센터래스터(VCR) 특성 및 수직편향자계(YH)의 조절 등 주로 수직편향코일의 자계를 보상한다.Here, the coma coil 120 is a coil 122 wound on the bobbin 121, and has a double winding structure of the primary coil 122a and the secondary coil 122b, which is a vertical center raster (VCR). It mainly compensates the magnetic field of the vertical deflection coil, such as the characteristics and the adjustment of the vertical deflection magnetic field (YH).

본 발명은 텔레비전 스크린의 화질에 영향을 미치는 즉 수직편향코일의 자계를 보상하는 상기 코마코일(120)의 권선 수를 조절하여 음극선관의 수직단 화상 크기를 조절하고자 하는 것으로, 코마코일(120)의 2차코일(122b)측 권선 수를 가감하면 스크린에 나타나는 화상의 크기를 조절할 수 있게 된다.The present invention is to adjust the size of the vertical end image of the cathode ray tube by adjusting the number of windings of the coma coil 120 that affects the image quality of the television screen, that is to compensate for the magnetic field of the vertical deflection coil, the coma coil 120 By subtracting the number of turns of the secondary coil 122b on the side, the size of the image appearing on the screen can be adjusted.

즉, 코마코일(120)의 2차코일(122b)측 권선 수를 감소시키면 스크린에 나타나는 수직단의 화상 크기가 작아지며, 2차코일(122b)측 권선 수를 증가시키면 스크린에 나타나는 수직단의 화상 크기가 커진다.In other words, if the number of turns of the secondary coil 122b of the coma coil 120 is decreased, the image size of the vertical stage appearing on the screen is reduced, and if the number of turns of the secondary coil 122b is increased, The image size increases.

따라서, 코마코일(120)의 2차코일(122b)측의 권선 수를 조절하면 스크린에구현되는 수직단의 화상 크기를 효율적으로 조절할 수 있으며, 기존의 정특성 매칭법보다 더 나은 개선효과를 볼 수 있다.Therefore, by adjusting the number of turns of the secondary coil 122b side of the coma coil 120, it is possible to efficiently adjust the image size of the vertical stage implemented on the screen, and to see a better improvement effect than the conventional static characteristic matching method. Can be.

이상에서 살펴본 바와 같이 본 발명에 따른 음극선관의 화상 크기 조절방법에 의하면, 코마수차 제거용인 코마코일의 2차코일측 권선 수를 가감함으로써 음극선관의 스크린에 구현되는 수직단의 화상 크기를 기존의 정특성 매칭법보다 효과적으로 조절할 수 있을 뿐만 아니라 화상의 크기를 용이하게 조절 가능하고 더욱 개선된 효과를 나타낸다.As described above, according to the image size adjusting method of the cathode ray tube according to the present invention, the image size of the vertical stage implemented on the screen of the cathode ray tube is reduced by adding or subtracting the number of windings of the secondary coil side of the coma coil for removing the coma aberration. Not only can it be adjusted more effectively than the static characteristic matching method, but also the size of the image can be easily adjusted and the improved effect is obtained.

Claims (1)

1차코일(122a) 및 2차코일(122b)의 이중권선구조로 형성된 코마코일(120)이 장착된 편향요크(100)를 포함하여 이루어진 음극선관의 화상 크기 조절방법에 있어서,In the image size adjustment method of a cathode ray tube comprising a deflection yoke (100) equipped with a coma coil (120) formed of a double winding structure of a primary coil (122a) and a secondary coil (122b), 상기 코마코일(120)의 2차코일(122b)측 권선 수를 가감하여 화상 크기를 조절하는 것을 특징으로 하는 음극선관의 화상 크기 조절방법.How to adjust the image size of the cathode ray tube, characterized in that to adjust the image size by subtracting the number of windings of the secondary coil (122b) side of the coma coil (120).
KR1020030005045A 2003-01-25 2003-01-25 Method for modulating size of picture on the crt KR20040068411A (en)

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