JPH06141197A - Deflecting coil for cathode-ray tube - Google Patents
Deflecting coil for cathode-ray tubeInfo
- Publication number
- JPH06141197A JPH06141197A JP4311495A JP31149592A JPH06141197A JP H06141197 A JPH06141197 A JP H06141197A JP 4311495 A JP4311495 A JP 4311495A JP 31149592 A JP31149592 A JP 31149592A JP H06141197 A JPH06141197 A JP H06141197A
- Authority
- JP
- Japan
- Prior art keywords
- ray tube
- deflection coil
- cathode ray
- axis
- magnetic field
- 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
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、陰極線管において電子
ビームを電磁的に偏向させるための偏向コイルに関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection coil for electromagnetically deflecting an electron beam in a cathode ray tube.
【０００２】[0002]
【従来の技術】カラー陰極線管では、一対ずつの水平偏
向コイルと垂直偏向コイルとから成る偏向ヨークによっ
て、パネル内面の蛍光面上で電子ビームを走査させてい
る。図６、７は、水平偏向コイルの第１従来例を示して
いる。カラー陰極線管の水平偏向コイル１１は、これら
の図６、７に示す様に、鞍型が多く用いられている。ま
た、コイルの長さを実効的に長くして偏向感度を高める
ために、主磁界発生部１２のｚ軸方向つまり陰極線管の
管軸方向の両端部にある開口部とネック部との両方にベ
ンド部１３、１４が設けられている。2. Description of the Related Art In a color cathode ray tube, an electron beam is scanned on a phosphor screen inside a panel by a deflection yoke composed of a pair of horizontal deflection coils and vertical deflection coils. 6 and 7 show a first conventional example of the horizontal deflection coil. The horizontal deflection coil 11 of the color cathode ray tube is often of saddle type as shown in FIGS. Further, in order to effectively increase the length of the coil and increase the deflection sensitivity, the main magnetic field generator 12 has both an opening and a neck at both ends in the z-axis direction, that is, in the tube axis direction of the cathode ray tube. Bend portions 13 and 14 are provided.
【０００３】この第１従来例におけるベンド部１３、１
４は、ｚ軸方向における厚さが一定で且つｚ軸に垂直な
ｘ−ｙ平面内に含まれている。また、ベンド部１３、１
４をｚ軸方向から見ると半円形である。そして、図７に
示す様に、上下一対の水平偏向コイル１１で磁界１５を
発生させている。しかし、この図７に示す様に、上下一
対の水平偏向コイル１１の水平ギャップ（ｘ軸）方向
で、パネル１６上における電子ビームのコンバーゼンス
が十分ではない。また、図示してはいないが、画歪の補
正も十分ではない。Bend portions 13 and 1 in the first conventional example.
4 has a constant thickness in the z-axis direction and is included in the xy plane perpendicular to the z-axis. Also, the bend parts 13, 1
4 is semicircular when viewed from the z-axis direction. Then, as shown in FIG. 7, a pair of upper and lower horizontal deflection coils 11 generate a magnetic field 15. However, as shown in FIG. 7, the convergence of the electron beam on the panel 16 is not sufficient in the horizontal gap (x-axis) direction of the pair of upper and lower horizontal deflection coils 11. Although not shown, the image distortion is not sufficiently corrected.
【０００４】そこで、近時においては、コンバーゼンス
及び画歪を改善するために、ｚ軸に垂直なｘ−ｙ平面内
でベンド部１３、１４の形状を２次元的に変化させて、
図８に示す様な角形にした第２従来例や、図９に示す様
な半楕円形にした第３従来例も考えられている。また、
図１０に示す様に、上下一対の水平偏向コイル１１の水
平ギャップの端部付近にマグネット１７を追加した第４
従来例も考えられている。Therefore, in recent years, in order to improve the convergence and the image distortion, the shapes of the bend portions 13 and 14 are two-dimensionally changed in the xy plane perpendicular to the z-axis.
A second conventional example having a rectangular shape as shown in FIG. 8 and a third conventional example having a semi-elliptical shape as shown in FIG. 9 are also considered. Also,
As shown in FIG. 10, a fourth embodiment in which a magnet 17 is added near the ends of the horizontal gaps of the pair of upper and lower horizontal deflection coils 11
Conventional examples are also considered.
【０００５】[0005]
【発明が解決しようとする課題】しかし、最近における
陰極線管のフラット化や高精細度化のために、上述の第
２従来例や第３従来例でも、ミスコンバーゼンス及び画
歪を完全には補正することができなくなってきている。
また、第１〜第３従来例では、単純に前後の巻線分布を
変更しても、やはりミスコンバーゼンス及び画歪を補正
することができない。一方、第４従来例では、部品が増
加して構成が複雑になるだけでなく、他への影響も大き
い。However, due to the recent flattening and higher definition of cathode ray tubes, misconvergence and image distortion are completely corrected even in the above-mentioned second conventional example and third conventional example. It is becoming impossible to do.
In the first to third conventional examples, the misconvergence and the image distortion cannot be corrected by simply changing the front and rear winding distributions. On the other hand, in the fourth conventional example, not only the number of parts increases and the configuration becomes complicated, but also the influence on others is great.
【０００６】[0006]
【課題を解決するための手段】請求項１の陰極線管の偏
向コイル１１は、鞍型をなしておりベンド部１３、１４
の一部に陰極線管の管軸方向への屈曲部１３ａ、１３ｂ
を有している。A deflection coil 11 for a cathode ray tube according to claim 1 is of a saddle type and has bend portions 13 and 14.
Bent portions 13a, 13b in the tube axial direction of the cathode ray tube
have.
【０００７】請求項２の陰極線管の偏向コイル１１は、
前記管軸方向への屈曲部を一部に有するボビンに巻回さ
れている。The deflection coil 11 of the cathode ray tube according to claim 2 is
It is wound around a bobbin that partially has a bent portion in the tube axis direction.
【０００８】請求項３の陰極線管の偏向コイル１１は、
開口部とネック部との両方の前記ベンド部１３、１４に
前記屈曲部１３ａ、１３ｂを有している。The deflection coil 11 of the cathode ray tube according to claim 3 is
The bent portions 13 and 14 of both the opening portion and the neck portion have the bent portions 13a and 13b.
【０００９】[0009]
【作用】本発明による陰極線管の偏向コイル１１では、
ベンド部１３、１４の一部に陰極線管の管軸方向への屈
曲部１３ａ、１４ｂ、つまり延長部または短縮部を有し
ているので、偏向のための磁界１５の強度を部分的に制
御することができる。このため、コイル１１の巻線分布
を変更したりマグネット１７を追加したりすることな
く、磁界１５の強度及び分布を３次元的に変化させるこ
とができる。しかも、管軸の回りにおける屈曲部１３
ａ、１３ｂの角度位置を変化させることによって、磁界
１５の強度及び分布を更に種々に変化させることもでき
る。従って、設計の範囲が広い。In the deflection coil 11 of the cathode ray tube according to the present invention,
Since the bend portions 13 and 14 have bent portions 13a and 14b in the tube axis direction of the cathode ray tube, that is, extension portions or shortened portions, the strength of the magnetic field 15 for deflection is partially controlled. be able to. Therefore, the intensity and distribution of the magnetic field 15 can be three-dimensionally changed without changing the winding distribution of the coil 11 or adding the magnet 17. Moreover, the bent portion 13 around the pipe axis
By changing the angular positions of a and 13b, the intensity and distribution of the magnetic field 15 can be changed in various ways. Therefore, the range of design is wide.
【００１０】[0010]
【実施例】以下、水平偏向コイルに適用した本発明の第
１〜第３実施例を、図１〜図５を参照しながら説明す
る。なお、図６〜１０に示した第１〜第４従来例と対応
する構成部分には、同一の符号を付してある。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, first to third embodiments of the present invention applied to a horizontal deflection coil will be described with reference to FIGS. The components corresponding to those of the first to fourth conventional examples shown in FIGS. 6 to 10 are designated by the same reference numerals.
【００１１】図１〜３が、第１実施例を示している。こ
の第１実施例は、水平偏向コイル１１における開口部の
ベンド部１３のうちで、上下一対の水平偏向コイル１１
の水平ギャップの端部付近に、ｚ軸に沿って陰極線管の
ファンネル方向へ延長させた屈曲部１３ａを有している
ことを除いて、図６、７に示した第１従来例と実質的に
同様の構成を有している。水平偏向コイル１１のこの様
な形状は、一部に屈曲部１３ａと同様の形状を有するボ
ビン（図示せず）にこの水平偏向コイル１１を巻回する
ことによって得られている。1 to 3 show a first embodiment. In the first embodiment, the horizontal deflection coil 11 is a pair of upper and lower horizontal deflection coils 11 in the bend portion 13 of the opening of the horizontal deflection coil 11.
Is substantially the same as the first conventional example shown in FIGS. 6 and 7, except that a bent portion 13a extending in the funnel direction of the cathode ray tube along the z-axis is provided near the end of the horizontal gap. Has the same configuration. Such a shape of the horizontal deflection coil 11 is obtained by winding the horizontal deflection coil 11 around a bobbin (not shown) partially having the same shape as the bent portion 13a.
【００１２】この様な第１実施例では、図２からも明ら
かな様に、屈曲部１３ａを有する部分においてのみ、主
磁界発生部１２をｚ軸方向へ実質的に長くしていること
になる。このため、水平ギャップの端部付近においての
み、電子ビームに対して第１従来例よりも長時間に亙っ
て磁界１５の影響を与えることができ、この部分の磁界
１５を強くしたことと同等になる。従って、その分だ
け、コンバーゼンス及び画歪に変化を与えることができ
る。In the first embodiment as described above, as is apparent from FIG. 2, the main magnetic field generating portion 12 is substantially lengthened in the z-axis direction only in the portion having the bent portion 13a. . Therefore, only near the end of the horizontal gap, the magnetic field 15 can be exerted on the electron beam for a longer time than in the first conventional example, which is equivalent to increasing the magnetic field 15 in this portion. become. Therefore, the convergence and the image distortion can be changed correspondingly.
【００１３】この結果、図３からも明らかな様に、水平
ギャップの端部付近にマグネット１７を配置した図１０
の第４従来例と同等の効果を奏することができ、水平ギ
ャップ（ｘ軸）方向で、パネル１６上における電子ビー
ムのコンバーゼンスが改善されている。つまり、この第
１実施例では、マグネット１７を追加することなく、コ
ンバーゼンスが改善されている。As a result, as is apparent from FIG. 3, the magnet 17 is arranged near the end of the horizontal gap in FIG.
The same effect as the fourth conventional example can be obtained, and the convergence of the electron beam on the panel 16 is improved in the horizontal gap (x-axis) direction. That is, in the first embodiment, the convergence is improved without adding the magnet 17.
【００１４】図４は、第２実施例を示している。この第
２実施例は、図１〜３に示した第１実施例の様に水平ギ
ャップの端部付近にのみ屈曲部１３ａを有しているので
はなく、水平ギャップ（ｘ軸）からｚ軸の回りに角度θ
に亙り、ｚ軸に沿ってファンネル方向へ延長させた屈曲
部１３ａを有している。この様な第２実施例でも、コン
バーゼンス及び画歪の改善に有利な様に、磁界１５に変
化を与えることができる。FIG. 4 shows a second embodiment. The second embodiment does not have the bent portion 13a only near the end portion of the horizontal gap as in the first embodiment shown in FIGS. 1 to 3, but instead of the horizontal gap (x axis) to the z axis. Around the angle θ
It has a bent portion 13a extending in the funnel direction along the z-axis. Also in the second embodiment as described above, the magnetic field 15 can be changed so as to advantageously improve the convergence and the image distortion.
【００１５】図５は、第３実施例を示している。この第
３実施例は、水平ギャップ（ｘ軸）からｚ軸の回りに角
度θ1 に亙り、ｚ軸に沿ってファンネル方向へ延長させ
た屈曲部１３ａを有すると共に、角度θ2 の部分にも、
屈曲部１３ｂを有している。この様な第３実施例では、
第２実施例よりも更に細かく磁界１５に変化を与えるこ
とができ、コンバーゼンス及び画歪を最適化することが
できる。FIG. 5 shows a third embodiment. The third embodiment has a bent portion 13a extending from the horizontal gap (x axis) around the z axis at an angle θ 1 and extending in the funnel direction along the z axis, and also at a portion at the angle θ 2. ,
It has a bent portion 13b. In such a third embodiment,
The magnetic field 15 can be changed more finely than in the second embodiment, and the convergence and the image distortion can be optimized.
【００１６】なお、以上の第１〜第３の何れの実施例に
おいても、屈曲部１３ａ、ｂをｚ軸に沿ってファンネル
方向へ延長させているが、これらの屈曲部１３ａ、ｂを
ｚ軸に沿ってネック方向へ短縮させてもよい。また、第
１〜第３の何れの実施例においても、屈曲部１３ａ、１
３ｂを開口部のベンド部１３に有しているが、ネック部
のベンド部１４やベンド部１３、１４の両方に屈曲部を
有していてもよい。In any of the above-described first to third embodiments, the bent portions 13a and 13b are extended in the funnel direction along the z-axis. May be shortened toward the neck along. Further, in any of the first to third examples, the bent portions 13a, 1
Although 3b is provided in the bend portion 13 of the opening, the bend portion 14 of the neck portion or both of the bend portions 13 and 14 may have a bent portion.
【００１７】また、以上の第１〜第３の何れの実施例に
おいても、水平偏向コイル１１が金型巻であるが、スリ
ット巻の水平偏向コイルにも本発明を適用することがで
きる。更に、第１〜第３実施例は本発明を水平偏向コイ
ルに適用したものであるが、鞍型の垂直偏向コイルであ
れば、垂直偏向コイルにも本発明を適用することができ
る。Further, in any of the first to third embodiments described above, the horizontal deflection coil 11 is a die winding, but the present invention can be applied to a slit winding horizontal deflection coil. Further, although the present invention is applied to the horizontal deflection coil in the first to third embodiments, the present invention can be applied to the vertical deflection coil as long as it is a saddle type vertical deflection coil.
【００１８】[0018]
【発明の効果】本発明による陰極線管の偏向コイルで
は、コイルの巻線分布を変更したりマグネットを追加し
たりしていないにも拘らず、偏向のための磁界の強度及
び分布を種々に変化させることができて、設計の範囲が
広いので、簡単な構成であるにも拘らずコンバーゼンス
や画歪の補正を行うことができる。In the deflection coil of the cathode ray tube according to the present invention, the intensity and the distribution of the magnetic field for deflection are variously changed although the winding distribution of the coil is not changed or the magnet is not added. Since it can be performed and the design range is wide, it is possible to correct the convergence and the image distortion despite the simple configuration.
【図１】本発明の第１実施例の半分を示しており、
（ａ）は正面図、（ｂ）は側面図である。FIG. 1 shows half of a first embodiment of the invention,
(A) is a front view and (b) is a side view.
【図２】第１実施例の半分の断面図である。FIG. 2 is a half sectional view of the first embodiment.
【図３】第１実施例の作用を説明するための要部の正面
図である。FIG. 3 is a front view of the main part for explaining the operation of the first embodiment.
【図４】第２実施例の半分を示しており、（ａ）は正面
図、（ｂ）は側面図である。FIG. 4 shows half of the second embodiment, (a) is a front view and (b) is a side view.
【図５】第３実施例の半分を示しており、（ａ）は正面
図、（ｂ）は側面図である。FIG. 5 shows half of the third embodiment, (a) is a front view and (b) is a side view.
【図６】本発明の第１従来例の半分を示しており、
（ａ）は正面図、（ｂ）は側面図である。FIG. 6 shows half of the first conventional example of the present invention,
(A) is a front view and (b) is a side view.
【図７】第１従来例の作用を説明するための要部の正面
図である。FIG. 7 is a front view of the main part for explaining the operation of the first conventional example.
【図８】第２従来例の半分を示しており、（ａ）は正面
図、（ｂ）は側面図である。FIG. 8 shows a half of a second conventional example, (a) is a front view and (b) is a side view.
【図９】第３従来例の半分を示しており、（ａ）は正面
図、（ｂ）は側面図である。FIG. 9 shows half of a third conventional example, (a) is a front view and (b) is a side view.
【図１０】第４従来例の作用を説明するための要部の正
面図である。FIG. 10 is a front view of the main part for explaining the operation of the fourth conventional example.
１１ 水平偏向コイル １３ ベンド部 １３ａ 屈曲部 １３ｂ 屈曲部 １４ ベンド部 11 Horizontal Deflection Coil 13 Bend Part 13a Bend Part 13b Bend Part 14 Bend Part
Claims (3)
線管の管軸方向への屈曲部を有していることを特徴とす
る陰極線管の偏向コイル。1. A deflection coil for a cathode ray tube, which is saddle-shaped and has a bent portion in a part of a bend portion in a tube axis direction of the cathode ray tube.
ボビンに巻回されていることを特徴とする請求項１記載
の陰極線管の偏向コイル。2. A deflection coil for a cathode ray tube according to claim 1, wherein the deflection coil is wound around a bobbin that has a part that is bent in the tube axis direction.
部に前記屈曲部を有していることを特徴とする請求項１
記載の陰極線管の偏向コイル。3. The bent portion is provided in both the opening portion and the neck portion of the bend portion.
Deflection coil of the described cathode ray tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4311495A JPH06141197A (en) | 1992-10-27 | 1992-10-27 | Deflecting coil for cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4311495A JPH06141197A (en) | 1992-10-27 | 1992-10-27 | Deflecting coil for cathode-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06141197A true JPH06141197A (en) | 1994-05-20 |
Family
ID=18017920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4311495A Pending JPH06141197A (en) | 1992-10-27 | 1992-10-27 | Deflecting coil for cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06141197A (en) |
-
1992
- 1992-10-27 JP JP4311495A patent/JPH06141197A/en active Pending
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