JPS63292552A - Deflecting yoke - Google Patents

Deflecting yoke

Info

Publication number
JPS63292552A
JPS63292552A JP62127828A JP12782887A JPS63292552A JP S63292552 A JPS63292552 A JP S63292552A JP 62127828 A JP62127828 A JP 62127828A JP 12782887 A JP12782887 A JP 12782887A JP S63292552 A JPS63292552 A JP S63292552A
Authority
JP
Japan
Prior art keywords
deflection
magnetic field
windings
electron beam
panel
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP62127828A
Other languages
Japanese (ja)
Inventor
Akira Kawabata
彰 川端
Zenichi Terasaki
寺崎 善一
Takashi Inoue
隆 井上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62127828A priority Critical patent/JPS63292552A/en
Priority to KR1019880006034A priority patent/KR910001401B1/en
Priority to DE3817567A priority patent/DE3817567C2/en
Priority to DE3844731A priority patent/DE3844731C2/de
Priority to US07/197,952 priority patent/US4876479A/en
Publication of JPS63292552A publication Critical patent/JPS63292552A/en
Priority to KR1019900015481A priority patent/KR910001402B1/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To remove a complicated distortion of higher order with simple and uncostly constitution by forming toroidal coils from main and aux. windings, which exist in specific angle ranges with the deflecting direction as the center. CONSTITUTION:Toroidal coils 4a, 4b to generate a magnetic field for deflection of electron beam in the y-direction serve as main windings to perform main deflecting action, which exist in the range 70 deg. to the left and right of the y-axis as the center. Windings 41a-1, 41a-2, 41b-1, 41b-2 serve as aux. windings to perform distortion correcting action, which lie in the ranges 65-90 deg. to the left and right of the y-axis as the center. Further coil winding parts 3a, 3b are furnished to generate a magnetic field for deflection of electron beam in the x-direction. Thereby a complicated distortion of higher order on the picture field of a color cathode-ray tube can be removed with simple construction, and such problems will be solved as hardness to manufacture and complification of the structure due to addition of any other correcting means, for ex. a magnet, and also ill influence of magnet upon convergence and color purities.

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、たとえばカラーテレビジョン受像機などに
使用されるカラーブラウン管に装着して用いられる偏向
ヨークに関するものである。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a deflection yoke that is attached to a color cathode ray tube used in, for example, a color television receiver.

[従来の技術] 第4図は従来の偏向ヨークをカラーブラウン管に装着し
た状態の断面図てあり、同図において、(51)は画像
の映し出されるパネルて、その内面には蛍光膜(55)
が付着され、内面有効部(100)を形成している。こ
の内面有効部(100)は視者に向って凸の球面とされ
ている。(52)はファンネルで、ほぼ錐体形で上記パ
ネル(51)に接続されている。
[Prior Art] Fig. 4 is a cross-sectional view of a conventional deflection yoke attached to a color cathode ray tube.
is attached to form an inner surface effective portion (100). This inner surface effective portion (100) is a spherical surface that is convex toward the viewer. (52) is a funnel, which is connected to the panel (51) in a substantially conical shape.

(53)は管状のネック部で、その内部に電子銃(54
)かとり付けられている。(56)はシャドウマスクで
、上記内面有効部(100)に対してほぼ平行に所定間
隔を隔てて配置されているとともに、薄い金属板から凸
の球面に形成され、無数の小孔が規則正しく設けられて
いる。(57)はフレームで、上記シャドウマスク(5
6)の外周に一体に接続され、図示省略の保持機構によ
ってシャドウマスク(56)を上記パネル(51)の内
面に位置決めしている。
(53) is a tubular neck part, inside which is an electron gun (54).
) is attached. (56) is a shadow mask, which is arranged approximately parallel to the inner surface effective portion (100) at a predetermined interval, and is formed from a thin metal plate into a convex spherical surface, and has numerous small holes arranged regularly. It is being (57) is the frame, and the shadow mask (57) is the frame.
6), and positions the shadow mask (56) on the inner surface of the panel (51) by a holding mechanism (not shown).

(1)は偏向ヨ一つて、上記のごとく構成されたカラー
ブラウン管(50)のファンネル(52)と管状のネッ
ク部(53)との接続部付近の外周に配置されている。
The deflector (1) is arranged on the outer periphery of the color cathode ray tube (50) constructed as described above near the connection point between the funnel (52) and the tubular neck (53).

上記構成のカラーブラウン管(50)において、電子銃
(54)から放射された電子ビーム(70)は上記偏向
ヨーク(1)により発生される磁界の中を通過する際、
その有効磁界の実効中心である第4図中の(D)点付近
て偏向され、上記シャドウマスク(56)の小孔を通っ
て蛍光膜(55)の所定の部分に射突して発光される。
In the color cathode ray tube (50) having the above configuration, when the electron beam (70) emitted from the electron gun (54) passes through the magnetic field generated by the deflection yoke (1),
It is deflected near point (D) in FIG. 4, which is the effective center of the effective magnetic field, and is emitted through the small hole of the shadow mask (56) and strikes a predetermined portion of the fluorescent film (55). Ru.

第5図は上記偏向ヨーク(1)の構造を示す外観斜視図
てあり、同図において、(2)はフェライトなどの強い
磁性体から筒形に形成されたコア、(3)は水平偏向コ
イルて、互いに対称形状をなす一対の鞍形コイルからな
り、電子ビームを第1の方向に偏向させるための磁界を
発生する。(4)は垂直偏向コイルで、上記コア(2)
にトロイタル形に巻回された互いに対称形状をなす一対
のコイルからなり、上記の第1方向と直角の第2の方向
に電子ビームを偏向させるための磁界を発生する。
Figure 5 is an external perspective view showing the structure of the deflection yoke (1), in which (2) is a core formed into a cylindrical shape from a strong magnetic material such as ferrite, and (3) is a horizontal deflection coil. It consists of a pair of saddle-shaped coils that are symmetrical to each other, and generates a magnetic field for deflecting the electron beam in a first direction. (4) is a vertical deflection coil, and the above core (2)
It consists of a pair of symmetrical coils wound in a troital shape, and generates a magnetic field for deflecting the electron beam in a second direction perpendicular to the first direction.

上記のような構成のカラーフラウン管における問題点の
1つに、シャドウマスク(56)の局部ドーミングと称
する現象か発生することである。この局部ドーミングと
は、凸の球面になっているシャドウマスク(56)か電
子ビームの射突にともない局部的に昇温し膨張して、そ
の部分か凸状にふくれあがるように変形し、その結果、
電子ビームの蛍光膜(55)への射突点か本来の位置か
らずれて、好ましくない色ずれを発生する現象をいう。
One of the problems with the color fluorine tube configured as described above is that a phenomenon called local doming of the shadow mask (56) occurs. This local doming is when the shadow mask (56), which has a convex spherical surface, heats up and expands locally as the electron beam hits it, causing that part to deform into a convex shape. result,
This is a phenomenon in which the point of impact of the electron beam on the fluorescent film (55) deviates from its original position, resulting in undesirable color shift.

このような現象を避ける対策の1つとして、学会誌「テ
レビジョン」第31巻第6号第46〜52頁において、
シャドウマスクの曲率半径をできるたけ小さく選定する
ことか報告されている。
As one of the measures to avoid such a phenomenon, in the academic journal "Television" Vol. 31 No. 6 No. 46-52,
It has been reported that the radius of curvature of the shadow mask is selected to be as small as possible.

ところて、シャドウマスク(56)の局面はパネル(5
I)の内面有効部(100)の曲面と関連して決定され
るものて、このパネル(51)の内面有効部(100)
の曲率半径を小さく定めることかシャドウマスク(56
)の曲率半径を小さくする上で有力な手段である。
By the way, the aspect of the shadow mask (56) is the panel (5
The inner surface effective portion (100) of this panel (51) is determined in relation to the curved surface of the inner surface effective portion (100) of I).
The radius of curvature of the shadow mask (56
) is an effective means of reducing the radius of curvature.

しかしながら、この手段は視者に向かって凸の曲面とな
っているパネル(51)の内面有効部(ioo)および
シャドウマスク(56)を一層面にすることになるため
、できるたけ平坦に近くして見やすい画像を得ようとす
ることからみて、好ましくない。
However, with this method, the effective inner surface (ioo) of the panel (51) and the shadow mask (56), which are curved surfaces convex toward the viewer, are made into even more flat surfaces, so they should be made as close to flat as possible. This is not desirable from the viewpoint of trying to obtain an image that is easy to view.

この問題の有効な解決手段として、内面有効部(100
)を特殊な非球面としたパネル(以下、SPPxネルと
称す)が提案されている。
As an effective solution to this problem, the inner effective part (100
) has been proposed as a special aspherical panel (hereinafter referred to as SPPx panel).

このSPPxネルの特徴と、これを使用することによっ
て生ずる独特な画像の歪について以下、説明する。
The characteristics of this SPPx channel and the unique image distortion caused by its use will be explained below.

第6図は内面有効部(100)の座標関係を説明するた
めの図であり、内面有効部(100)は通常ほぼ長方形
をなし、この長方形の内面有効部(100)の中央部、
つまりカラーブラウン管(50)の管軸との交点Oを原
点とし、その凸方向を2軸、これに垂直な長方形の長辺
方向をy軸、短辺方向をy軸として以下、説明する。
FIG. 6 is a diagram for explaining the coordinate relationship of the inner surface effective portion (100). The inner surface effective portion (100) usually has a substantially rectangular shape, and the central portion of the rectangular inner surface effective portion (100),
In other words, the following description will be made assuming that the intersection O with the tube axis of the color cathode ray tube (50) is the origin, the convex direction is the two axes, the long side direction of the rectangle perpendicular to this is the y axis, and the short side direction is the y axis.

X方向は第5 r5!lて説明した偏向ヨーク(1)の
第1の水平偏向方向に対応し、X方向は第2の垂直偏向
方向に対応している。
The X direction is the 5th r5! The X direction corresponds to the first horizontal deflection direction of the deflection yoke (1) described above, and the X direction corresponds to the second vertical deflection direction.

第7図は上記偏向ヨーク(1)と内面有効部(100)
との相対位置関係を示す図てあり、また第8図は内面有
効部(100)をxy平面で断面した図である。通常、
第8図で示すような曲面は左右対称の一方であり、この
断面をz = f (x)で表わすとき、任意のXにお
ける曲率半径Pxは、で表わされ、Pxか正のとき、+
Z方向に凸である。
Figure 7 shows the deflection yoke (1) and the inner effective part (100).
FIG. 8 is a cross-sectional view of the inner surface effective portion (100) taken along the xy plane. usually,
The curved surface shown in Fig. 8 is bilaterally symmetrical, and when this cross section is expressed as z = f (x), the radius of curvature Px at any X is expressed as, and when Px is positive, +
It is convex in the Z direction.

いま、内面有効部(100)のX軸端なX■ax、とす
ると、SPPxネルは、2/3X+sax、と3/4X
max、とのあいだにxy断面の曲率半径で比較して、
Poより曲率半径の小さい部分か存在するといえる。
Now, assuming that the X-axis end of the inner surface effective part (100) is X■ax, the SPPx channel is 2/3X+sax, and 3/4X
max, compared with the radius of curvature of the xy cross section,
It can be said that there exists a portion with a smaller radius of curvature than Po.

このような構成のパネルを使用することにより・ 画面
の平坦度をあまり損なうことなく、局部ドーミングを減
少できるか、これは以下の理由による。
By using a panel with such a configuration, it is possible to reduce local doming without significantly impairing the flatness of the screen.This is due to the following reasons.

つまり、局部ドーミングは偏向角の小さい、すなわち内
面有効部(100)の中心に近い部分において大きく変
形していても、電子ビームの射突点からの位置ずれは小
さくて実害か少なく、またx=o付近の平坦度は画面全
体を平坦に見せる上て重要てあり、Poを大きくするこ
とか好ましい。
In other words, even if local doming has a small deflection angle, that is, a large deformation in a portion close to the center of the inner surface effective portion (100), the positional deviation from the electron beam impact point is small and there is little actual damage, and x= The flatness near o is important for making the entire screen look flat, and it is preferable to increase Po.

つぎに、画面の最周辺であるXmax、においては、シ
ャドウマスク(56)の周辺をフレーム(57)に固定
しているから、局部ドーミングによる変形か起りにくく
、また仮りに変形かあっても視者への影響は少なくて、
Poの大小はあまり重要てない。
Next, at Xmax, which is the most peripheral part of the screen, since the periphery of the shadow mask (56) is fixed to the frame (57), deformation due to local doming is unlikely to occur, and even if deformation occurs, it is not visible. The impact on people is small,
The size of Po is not very important.

以上のことから総合してみて、局部ドーミングおよびそ
れにともなう色ずれなどの現象を減少するには、x=0
とx = Xmax、とのあいだの部分て、とくにX 
” 2/3Xmax、とX= 3/4XIIax、との
あいたにおいて曲率半径Pxをできるたけ小さくするこ
とか望ましいとの結論に達し、これを実践したのかsp
形パネルである。
Taking all the above into account, in order to reduce phenomena such as local doming and color shift associated with it, x = 0
and x = Xmax, especially the part between
” I came to the conclusion that it is desirable to make the radius of curvature Px as small as possible between 2/3Xmax and X = 3/4XIIax, and have I put this into practice?
It is a shaped panel.

[発明か解決しようとする問題点] ところて、内面有効部(100)か従来から用いられて
いる球面であるパネルに横線のみからなる画像を映し出
してみると、第9図に示すようになる。同図において、
画像である横線(110)は点線のごとく、X軸に平行
に映し出されるのが望ましいか、Xの大きい所では、第
4図に示すごとく、偏向ヨーク(1)の有効磁界の実効
的中心である点りと内面有効部(100)との距離か大
となるためX”0からXmax、にゆくにしたかって次
第にX軸からはなれるように曲ってしまう。
[Problem to be solved by the invention] By the way, when an image consisting only of horizontal lines is projected on the inner surface effective portion (100) or a conventionally used spherical panel, it becomes as shown in Fig. 9. . In the same figure,
It is preferable that the horizontal line (110) that is the image is projected parallel to the X axis, as shown in the dotted line, or at the point where X is large, the effective center of the effective magnetic field of the deflection yoke (1), as shown in Fig. Since the distance between a certain point and the inner surface effective portion (100) becomes large, as you go from X'0 to Xmax, it gradually curves away from the X axis.

この曲り程度を各横線のx=0におけるy座標からのず
れ△yてあられすと、△yは内面有効部(100)の問
題にしている点の座標を(x、y)とするとき、ほぼx
 2 yに比例する。△yの値は内面有効部(100)
か球面であるため、その曲率半径を小さくすればある程
度小さくなる。また、偏向ヨークの磁界分布に特長をも
たせることによってもある程度補正できる。これらを考
慮しても横線(110)の曲りは残るものの、△yかx
yに比例することに変りかなく、偏向回路に簡単な歪補
正回路を付加することによって容易に除去することがで
きる。
The degree of this bending can be expressed as the deviation △y of each horizontal line from the y coordinate at x=0, and △y is when the coordinates of the point in question in the inner surface effective part (100) are (x, y). Almost x
2 Proportional to y. The value of △y is the inner effective part (100)
Since it is a spherical surface, it can be reduced to some extent by reducing its radius of curvature. Further, it can be corrected to some extent by giving features to the magnetic field distribution of the deflection yoke. Even if these are considered, the horizontal line (110) remains curved, but △y or x
It is still proportional to y, and can be easily removed by adding a simple distortion correction circuit to the deflection circuit.

次に、上記詳述したSP形パネルを用いた時の横線画像
の曲り具合をみてみると、第1θ図に示すようになる。
Next, when looking at the degree of curvature of the horizontal line image when using the SP type panel detailed above, it becomes as shown in Fig. 1θ.

SP形パネルにあっては、内面有効部(100)のxz
凹断面曲率半径が既述のような特長を有しているため、
偏向ヨーク(1)の有効磁界の実効的中心である点りと
内面有効部(1圓)の距離の変化の程度がx = 2/
3Xmax、付近から外側とそれより内側とで異なり、
結局、Δyがx2 yに比例するだけでなく、X = 
2/3Xmax、付近から横線が急速にX軸に近づくよ
うに曲る傾向を有する。
For SP type panels, xz of the inner effective part (100)
Since the radius of curvature of the concave section has the features mentioned above,
The degree of change in the distance between the dot, which is the effective center of the effective magnetic field of the deflection yoke (1), and the inner effective part (1 circle) is x = 2/
3Xmax, different from the outside from the vicinity and the inside from it,
After all, not only is Δy proportional to x2y, but also X =
From around 2/3Xmax, the horizontal line tends to curve rapidly toward the X axis.

さらに、SP形パネルにあって、内面有効部(100)
の長辺部、すなわちy =  ymax、付近でのxz
凹断面平行な而ての断面形状において、画面全体なてき
るだけ平坦に見せるための手段の1つとして、2方向の
変化幅をおさえることも考えられ、これによって、y 
= y+max、付近において上記横線がX軸に近づく
方向に曲る現象が軽減され、結局、第11図のような曲
り現象のみが残ることになる。この現象を除去する手段
として、偏向回路に歪補正回路を付加することが考えら
れるが、これによると、歪△yがXおよびyの高次の関
数となるため構成面で非常に困難で、実現し得るとして
も非常に高価なものとなってしまう。
Furthermore, in the SP type panel, the inner surface effective portion (100)
The long side of , i.e. y = ymax, xz near
In a cross-sectional shape where the concave surface is parallel, one way to make the entire screen look as flat as possible is to suppress the width of change in the two directions.
= y+max, the phenomenon in which the horizontal line bends toward the X axis is reduced, and in the end, only the bending phenomenon as shown in FIG. 11 remains. One possible way to eliminate this phenomenon is to add a distortion correction circuit to the deflection circuit, but this would be extremely difficult in terms of configuration because the distortion △y would be a higher-order function of X and y. Even if it could be realized, it would be extremely expensive.

この発明は上記のような問題点を解消するためになされ
たもので、SP形パネルのような複雑な曲面に応じて表
われる高次の複雑な歪を簡単、安価な構成をもって除去
することができる偏向ヨークを提供する点を目的とする
This invention was made to solve the above-mentioned problems, and it is possible to remove high-order complicated distortions that appear in response to complicated curved surfaces such as SP type panels with a simple and inexpensive structure. The purpose is to provide a deflection yoke that can be used.

[問題点を解決するための手段] この発明にかかる偏向ヨークは、コアに巻回され、電子
ビームを第1の方向に偏向させるための磁界を発生させ
るトロイダル形コイルを、上記偏向方向を中心として左
右ほぼ70°の範囲に存在する巻線部と、左右65〜9
0°の範囲に存在する巻線部とから構成したことを特徴
とする。
[Means for Solving the Problems] A deflection yoke according to the present invention includes a toroidal coil that is wound around a core and that generates a magnetic field for deflecting an electron beam in a first direction. The winding part exists in a range of approximately 70° left and right, and the winding part exists in a range of approximately 70° left and right, and
It is characterized by being composed of a winding part existing in a range of 0°.

[作用] この発明によれば、電子ビームを第1の方向に偏向させ
るための磁界を発生させるトロイダル形コイルのうち、
上記偏向方向を中心として左右ほぼ70°の範囲に存在
する巻線部によって発生された磁界が主偏向作用をおこ
なう一方、左右65〜90°の範囲に存在する巻線部に
よって発生された磁界が既述のような画面周辺における
歪の補正作用をおこなう。
[Operation] According to the present invention, among the toroidal coils that generate a magnetic field for deflecting the electron beam in the first direction,
The magnetic field generated by the windings existing in a range of approximately 70° left and right with respect to the above deflection direction performs the main deflection action, while the magnetic field generated by the windings located in a range of 65 to 90° left and right It performs the distortion correction action at the periphery of the screen as described above.

[発明の実施例] 以下、この発明の一実施例を図面にもとづいて説明する
[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described based on the drawings.

第1図はこの発明の一実施例による偏向ヨークのxy断
面図であり、同図において、(2)はフェライトなどの
強い磁性体から筒形に形成されたコア、(4a) 、 
(4b)は電子ビームをX方向に偏向させるための磁界
を発生させるトロイダル形コイルで、主偏向作用をおこ
なう主巻線となり、y軸を中心として左右ほぼ70°の
範囲に存在する。
FIG. 1 is an xy cross-sectional view of a deflection yoke according to an embodiment of the present invention, in which (2) is a core formed into a cylindrical shape from a strong magnetic material such as ferrite; (4a);
(4b) is a toroidal coil that generates a magnetic field for deflecting the electron beam in the X direction, and is the main winding that performs the main deflection action, and is located in a range of approximately 70° left and right around the y-axis.

(41a−1)、(41a−2)、(41b−1)、(
41b−2)は歪補正作用をおこなう巻線部で、副巻線
となり、上記y軸を中心として左右65〜90°の範囲
に存在する。
(41a-1), (41a-2), (41b-1), (
Reference numeral 41b-2) denotes a winding section that performs a distortion correction function, which serves as a sub-winding, and is present in a range of 65 to 90 degrees to the left and right with the y-axis as the center.

(3a)、(3b)は電子ビームをX方向に偏向させる
ための磁界を発生させるコイル巻線部である。
(3a) and (3b) are coil winding sections that generate a magnetic field for deflecting the electron beam in the X direction.

つぎに、上記構成の動作について説明する。Next, the operation of the above configuration will be explained.

第2図は各コイル巻線部の電流方向と電子ビームの偏向
方向を示す図てあり、同図中、O■は電流方向、→は磁
力線60の方向てあり、第3図は電子ビームなxy平面
の第1象限で、図面上の右上に偏向させる場合を示し、
第2象限〜第4象限については左右対称の方向に偏向さ
れるため図示を省略する。
Figure 2 shows the current direction of each coil winding and the deflection direction of the electron beam. In the first quadrant of the xy plane, it shows the case where it is deflected to the upper right on the drawing,
The illustrations of the second to fourth quadrants are omitted because they are deflected in symmetrical directions.

いま、電子ビーム(70)か水平偏向コイル(3a)。Now, the electron beam (70) or the horizontal deflection coil (3a).

(3b)および垂直偏向コイル(4a) 、 (4b)
に流れる電流による磁力線で右上方向に偏向されたとき
、副巻線(41a−1) 、 (4]a−2) 、 (
41b−1) 、 (41b−2)に流れる電流により
生ずる磁力1ll(60)により右上方向の力を受ける
。この力はX軸端に近づくにしたかい、つまり副巻線(
41a−1)、(41a−2)、(41b−1)、(4
1b−2)に近づくにしたかって強くなるから、第1O
図で示したずれ△yのうち、X2 yに比例しないよう
に、すなわち、画面周辺において、横線が下方向へ垂れ
下る分を補正する。
(3b) and vertical deflection coils (4a), (4b)
When deflected in the upper right direction by the magnetic field lines caused by the current flowing in the subwindings (41a-1), (4]a-2), (
41b-1) and (41b-2) receive a force in the upper right direction due to the magnetic force 1ll (60) generated by the current flowing therein. This force increases the closer you get to the end of the X-axis, that is, the auxiliary winding (
41a-1), (41a-2), (41b-1), (4
1b-2), it becomes stronger as you approach it, so the 1st O
Of the deviation Δy shown in the figure, the amount by which the horizontal line hangs downward at the periphery of the screen is corrected so that it is not proportional to X2y.

上記のような歪補正作用をおこなう副巻線(41a−1
) 、 (41a−2) 、 (41b−1)、 (4
1b−2)の存在範囲はy軸を中心として70°付近が
上記歪の補正に最大の効果を示して、カラーブラウン管
の有効画面全面で効果があることを実験により確認した
The auxiliary winding (41a-1) performs the distortion correction function as described above.
), (41a-2), (41b-1), (4
It has been experimentally confirmed that 1b-2) has the greatest effect in correcting the distortion in the vicinity of 70 degrees around the y-axis, and is effective over the entire effective screen of a color cathode ray tube.

[発明の効果] 以上のように、この発明によれば、従来の偏向ヨークの
製造技術、製造装置をそのまま活用して副巻線を施すと
いった簡単な構成付加により、カラーブラウン管の画面
上の高次複雑な歪を除去できると同時に、他の補正手段
、たとえばマグネットなどの付加にともなう製造面での
困難性、構造の複雑化、さらにはマグネットなどによる
、たとえばコンバーゼンスに対する悪影響や色純度に対
する悪影響をも回避できる。
[Effects of the Invention] As described above, according to the present invention, the height on the screen of a color cathode ray tube can be increased by simply adding a subwinding to the conventional deflection yoke manufacturing technology and manufacturing equipment. At the same time, it is possible to remove complex distortions, while at the same time adding other correction means such as magnets, which can be difficult to manufacture and complicate the structure. can also be avoided.

したがって、簡単、安価な構成にて、SP形パネルの複
雑曲面に現われる歪を確実に除去できる効果がある。
Therefore, it is possible to reliably eliminate distortions appearing on the complex curved surface of the SP type panel with a simple and inexpensive configuration.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の一実施例による偏向ヨークのxy断
面図、第2−図はコイル巻線部の電流方向と電流ビーム
の偏向方向を示す図、第3図は第2図の第1象限を拡大
した図、第4図は従来のカラーブラウン管の断面図、第
5図は偏向ヨークの外観斜視図、第6図は座標関係の説
明図、第7図はカラーブラウン管の偏向ヨークとの相対
位置の説明図、第8図はカラーブラウン管の有効画面の
xy断面図、第9図は球面形パネルの画像の歪を示す図
、第1θ図はSP形パネルの画像の歪を示す図、第11
図は改良SP形パネルの画像の歪を示す図である。 (1)−・・偏向ヨーク、(2)−・・コア、(3a)
、(+b) −・−水平偏向コイル巻線部、(4a) 
、 (4b)・・・垂直偏向コイル巻線部、(41a−
1) 、 (41a−2) 、 (41b−1) 、 
(41b−2)・・・副巻線部、(50)・・・カラー
ブラウン管、(51)・・・パネル、(52)−・・フ
ァンネル、(53)−・・ネック部、(56)・・・シ
ャドウマスク、(70)・・・電子ビーム、(100)
 −・・内面有効部。 なお、図中の同一符号は同一または相当部分を示す。
FIG. 1 is an xy cross-sectional view of a deflection yoke according to an embodiment of the present invention, FIG. FIG. 4 is a cross-sectional view of a conventional color cathode ray tube, FIG. 5 is an external perspective view of the deflection yoke, FIG. 6 is an explanatory diagram of the coordinate relationship, and FIG. 7 is a diagram showing the relationship between the deflection yoke and the color cathode ray tube. An explanatory diagram of relative positions, Figure 8 is an xy cross-sectional view of the effective screen of a color cathode ray tube, Figure 9 is a diagram showing image distortion of a spherical panel, Figure 1θ is a diagram showing image distortion of an SP type panel, 11th
The figure shows image distortion of the improved SP type panel. (1)--Deflection yoke, (2)--Core, (3a)
, (+b) -・-Horizontal deflection coil winding section, (4a)
, (4b)...Vertical deflection coil winding section, (41a-
1), (41a-2), (41b-1),
(41b-2)... Sub-winding section, (50)... Color cathode ray tube, (51)... Panel, (52)... Funnel, (53)... Neck section, (56) ...shadow mask, (70) ...electron beam, (100)
−・Inner effective part. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】[Claims] (1)蛍光面が形成された内面有効部を有するパネル、
このパネルに接続されたファンネル、このファンネルの
上記パネル側とは反対側に接続され、内部に電子銃を有
する管状のネック部からなるカラーブラウン管の上記フ
ァンネルと上記ネック部との接続部付近に配置され、環
状の強磁性体からなるコアと、このコアに巻回されて互
いに対称に配置されかつ電子ビームを第1の方向に偏向
させるための磁界を発生させるトロイダル形コイルとを
備えた偏向ヨークにおいて、上記トロイダル形コイルを
、上記偏向方向を中心として左右ほぼ70°の範囲に存
在する巻線部と、左右65〜90°の範囲に存在する巻
線部とから構成したことを特徴とする偏向ヨーク。
(1) A panel having an inner effective portion on which a fluorescent screen is formed;
A funnel connected to this panel, connected to the opposite side of the funnel from the panel side, and arranged near the connection point between the funnel and the neck of the color cathode ray tube, which consists of a tubular neck section with an electron gun inside. a deflection yoke comprising a core made of an annular ferromagnetic material, and a toroidal coil wound around the core and arranged symmetrically to each other to generate a magnetic field for deflecting the electron beam in a first direction. The toroidal coil is characterized in that the toroidal coil is composed of a winding part that extends approximately 70 degrees to the left and right with respect to the deflection direction, and a winding part that extends from 65 to 90 degrees left and right with respect to the deflection direction. deflection yoke.
JP62127828A 1987-05-25 1987-05-25 Deflecting yoke Pending JPS63292552A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP62127828A JPS63292552A (en) 1987-05-25 1987-05-25 Deflecting yoke
KR1019880006034A KR910001401B1 (en) 1987-05-25 1988-05-21 Deflection yoke
DE3817567A DE3817567C2 (en) 1987-05-25 1988-05-24 Deflection yoke for a cathode ray tube
DE3844731A DE3844731C2 (en) 1987-05-25 1988-05-24
US07/197,952 US4876479A (en) 1987-05-25 1988-05-24 Deflection yoke for a color cathode ray tube
KR1019900015481A KR910001402B1 (en) 1987-05-25 1990-09-28 Daflection yoke

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62127828A JPS63292552A (en) 1987-05-25 1987-05-25 Deflecting yoke

Publications (1)

Publication Number Publication Date
JPS63292552A true JPS63292552A (en) 1988-11-29

Family

ID=14969670

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62127828A Pending JPS63292552A (en) 1987-05-25 1987-05-25 Deflecting yoke

Country Status (1)

Country Link
JP (1) JPS63292552A (en)

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