JPH01159939A - Deflection yoke - Google Patents
Deflection yokeInfo
- Publication number
- JPH01159939A JPH01159939A JP31621587A JP31621587A JPH01159939A JP H01159939 A JPH01159939 A JP H01159939A JP 31621587 A JP31621587 A JP 31621587A JP 31621587 A JP31621587 A JP 31621587A JP H01159939 A JPH01159939 A JP H01159939A
- Authority
- JP
- Japan
- Prior art keywords
- deflection
- coil
- magnetic field
- mag
- 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.)
- Granted
Links
- 241000226585 Antennaria plantaginifolia Species 0.000 abstract description 18
- 230000035945 sensitivity Effects 0.000 abstract description 8
- 238000004804 winding Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract 3
- 230000000717 retained effect Effects 0.000 abstract 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 11
- 230000000694 effects Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 5
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 240000000136 Scabiosa atropurpurea Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、投写形テレビジョンなどの陰極線管に取付け
て使用する偏向ヨークに係り、特にビームスポット形状
がフォーカス性能の点で良好で、糸巻状の画像歪（以下
糸巻歪という）の補正に好適な手段に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a deflection yoke used by being attached to a cathode ray tube such as a projection television. The present invention relates to means suitable for correcting image distortion (hereinafter referred to as pincushion distortion).
従来の装置は、特開昭５７−１３０９７号に記載のよう
に、糸巻歪の補正とフォーカス性能の両立を図るため、
くら形偏向コイルの突合せ部の少なくとも１個のへこみ
部を形成し、上記へこみ部の形成箇所にバレル形磁界を
形成するものであった。As described in Japanese Patent Application Laid-open No. 57-13097, conventional devices aim to achieve both pincushion distortion correction and focus performance.
At least one recess is formed in the abutting portion of the wedge-shaped deflection coil, and a barrel-shaped magnetic field is formed at the location where the recess is formed.
上記従来技術は、くら形偏向コイルの突合せ部にへこみ
部を形成したことにより、偏向感度が低下すること、お
よび上記へこみ部の深さを著しく大きくして強いバレル
形磁界分布を形成することはコイル導体が傷つきやすく
難しいという点については、配慮されておらず、大きな
糸巻歪の補正を良好なフォーカス性能のまま実現するう
えで問題があった。In the above conventional technology, the deflection sensitivity decreases due to the formation of a recessed portion at the abutting portion of the hollow-shaped deflection coil, and it is difficult to form a strong barrel-shaped magnetic field distribution by significantly increasing the depth of the recessed portion. No consideration was given to the fact that the coil conductor is easily damaged and difficult, and there was a problem in correcting large pincushion distortion while maintaining good focus performance.
上記目的は、くら形偏向コイルの突合せ部に間隙部を設
け、かつ間隙部の一部又は全体に渡り磁性体片を埋設す
るとともに、偏向コイルの蛍光面側でビンクツション形
磁界を形成する巻線密度分布とするか、もしくは偏向ヨ
ークの蛍光面側に８極磁界成分を形成する永久磁石を配
置することにより達成される。The above purpose is to provide a gap between the abutting portions of the wedge-shaped deflection coils, bury a piece of magnetic material in part or all of the gap, and wind the deflection coil to form a binction type magnetic field on the phosphor screen side of the deflection coil. This can be achieved by using a density distribution or by arranging a permanent magnet that forms an octupole magnetic field component on the phosphor screen side of the deflection yoke.
上記磁性体片は偏向コイルの作る偏向磁界を強め、偏向
感度を向上する作用をするとともに、偏向磁界を強いバ
レ／’Ｌ／形に変形させるように作用する。The magnetic piece acts to strengthen the deflection magnetic field generated by the deflection coil and improve the deflection sensitivity, and also acts to deform the deflection magnetic field into a strong curve.
また、偏向コイルの蛍光面側に形成されたビンクツショ
ン形磁界、および前記永久磁石により形成された８極磁
界成分により、糸巻歪が補正されるとともに、ビームス
ポット歪を生じる。Further, pincushion distortion is corrected and beam spot distortion is caused by the binction type magnetic field formed on the phosphor screen side of the deflection coil and the 8-pole magnetic field component formed by the permanent magnet.
さらに、上記ビームスポット歪は、磁性体片の作用によ
って生じる強いバレル形の偏向磁界によって、逆方向の
ビームスポット歪が形成され、互いに相殺することによ
り補正される。Further, the beam spot distortion described above is corrected by forming beam spot distortions in opposite directions by a strong barrel-shaped deflection magnetic field generated by the action of the magnetic piece, and canceling each other out.
したがって、糸巻歪をある程度強く補正しても、偏向感
度およびフォーカス性能を良好に保つことができる。Therefore, even if the pincushion distortion is strongly corrected to some extent, deflection sensitivity and focus performance can be kept good.
以下、本発明の実施例を図を参照して説明する。 Embodiments of the present invention will be described below with reference to the drawings.
第１図および第２図は、本発明の第１の実施例の偏向ヨ
ーク１を示す斜視図および正面図である。1 and 2 are a perspective view and a front view showing a deflection yoke 1 according to a first embodiment of the present invention.
また、第３図は、本発明にかかわる水平偏向コイル２、
垂直偏向コイル３および磁性体片６を示す要部側面図で
ある。また、第４図は、第３図の■−■線における偏向
ヨーク１の断面図である。上記各図において、４はコア
、５はセパレータである。Further, FIG. 3 shows a horizontal deflection coil 2 according to the present invention,
3 is a side view of main parts showing a vertical deflection coil 3 and a magnetic piece 6. FIG. Further, FIG. 4 is a sectional view of the deflection yoke 1 taken along the line ■-■ in FIG. In each of the above figures, 4 is a core and 5 is a separator.
本実施例では、くら形に形成された水平偏向コイル２お
よび垂直偏向コイル３の突合せ部７に間隙部８を設け、
この間隙部８の一部分に磁性体片６を備えている。磁性
体片６の配置されない箇所では、第５図（ａ） 、 （
ｂ）に示すように、ビンクツション形の水平偏向磁界９
ａもしくは垂直偏向磁界１゜ａを形成するように、各偏
向コイル２，３は形成されている。同図には、偏向磁界
によるビームスポット形状１１も示す。また、偏向ヨー
クの蛍光面・ ３
側の上記ビンクツション形の偏向磁界９ａ、１０ａによ
って、第６図に示すような糸巻歪１４が補正される。In this embodiment, a gap portion 8 is provided at the abutting portion 7 of the horizontal deflection coil 2 and the vertical deflection coil 3, which are formed in a hollow shape.
A magnetic piece 6 is provided in a part of this gap 8. 5(a), (
As shown in b), the horizontal deflection magnetic field 9 of the binction type
Each deflection coil 2, 3 is formed so as to form a vertical deflection magnetic field of 1°a. The figure also shows a beam spot shape 11 due to the deflection magnetic field. Furthermore, the pincushion distortion 14 as shown in FIG. 6 is corrected by the binction type deflection magnetic fields 9a and 10a on the phosphor screen 3 side of the deflection yoke.
一方、磁性体片６の配置された偏向ヨークの中間部では
、第５図（Ｃ） 、 （ｄ）に示すように、磁性体片６
によって水平偏向磁界９ｂは垂直中心軸上で強められ、
垂直偏向磁界１０ ｂは水平中心軸上で強められること
により、各偏向磁界９ｂ、１０ｂともバレル形状となる
。このため、ビームスポット形状は、同図に示すように
変化し、第５図（ａ） ｌ （ｂ）に示したビームスポ
ット歪と相殺し、第７図に示すような良好なスポット形
状が得られる。また、糸巻歪は蛍光面側１３の磁界分布
によって支配的に定まるため、上記したように蛍光面側
のビンクツション形磁界の効果によって、糸巻歪は補正
される。On the other hand, in the middle part of the deflection yoke where the magnetic piece 6 is arranged, as shown in FIGS.
The horizontal deflection magnetic field 9b is strengthened on the vertical central axis,
The vertical deflection magnetic field 10b is strengthened on the horizontal central axis, so that each of the deflection magnetic fields 9b and 10b has a barrel shape. Therefore, the beam spot shape changes as shown in the same figure, canceling out the beam spot distortion shown in Figures 5(a) and (b), and obtaining a good spot shape as shown in Figure 7. It will be done. Furthermore, since the pincushion distortion is predominantly determined by the magnetic field distribution on the phosphor screen side 13, the pincushion distortion is corrected by the effect of the vincsion type magnetic field on the phosphor screen side, as described above.
また、偏向ヨークの中間部でバレル形磁界を形成したに
もかかわらす、磁性体片の効果によって磁界が強められ
るため、偏向感度は向上する。Further, even though a barrel-shaped magnetic field is formed at the middle part of the deflection yoke, the magnetic field is strengthened by the effect of the magnetic piece, so the deflection sensitivity is improved.
第８図は、本発明の第２の実施例の偏向ヨーク１を示す
正面図である。同図において、水平偏向、 ４
コイル２および垂直偏向コイル３の突合せ部７には、中
間部にのみへこみを設け、間隙部８を形成している。さ
らに、上記間隙部８には幅の広い磁性体片６が配置して
いる。本実施例によれば、偏向コイルの形状の違いによ
り、第９図に示すように、非均−磁界成分（６極磁界成
分）の程度は、破線１６で示した第１の実施例の場合に
比べ、実線１７で示すように偏向ヨーク１の両端部でピ
ンクジョン形、中間部でバレル形の程度をそれぞれ強め
ることができる。このため、本実施例では、ビームスポ
ット形状を良好に保ちながら、糸巻歪の補正の程度をさ
らに強めることができる。FIG. 8 is a front view showing a deflection yoke 1 according to a second embodiment of the invention. In the same figure, the abutting portion 7 of the horizontal deflection coil 2 and the vertical deflection coil 3 is provided with a recess only in the middle portion to form a gap portion 8. Further, a wide magnetic piece 6 is arranged in the gap 8. According to this embodiment, due to the difference in the shape of the deflection coil, as shown in FIG. Compared to this, as shown by the solid line 17, the deflection yoke 1 can have a stronger pink John shape at both ends and a stronger barrel shape at the middle. Therefore, in this embodiment, the degree of correction of pincushion distortion can be further enhanced while maintaining a good beam spot shape.
第１０図は、本発明の第３の実施例を示す偏向ヨークｌ
の正面図である。偏向ヨーク１の蛍光面側端部の外周の
上下、左右に永久磁石２Ｑａ、２０ｂを備えている。こ
の永久磁界２１は、第１１図に示すように８極磁界２１
を形成し、同図に示すようなビームスポット形状１１の
変化を生じる。また、永久磁石２０ａ、２０ｂの効果に
より、第６図に示す糸巻歪が補正される。一方、水平偏
向コイル２および垂直偏向コイル３の発生する磁界は、
第１２図に非均−磁界成分を実線１７で示すように、偏
向ヨークの両端部では弱いビンクツション形で、中間部
では磁性体片６を前記と同様に備えているため強いバレ
ル形であり、全体の平均ではバレル形傾向である。この
バレル形傾向の磁界によって生じるビームスポット形状
の変化は、第５図（ｃｌ 、 （ｄ）に示すように、永
久磁石２０によるビームスポット形状の変化の傾向が逆
であり、お互いの効果が相殺されるため、良好なビーム
スポット形状を得ることができる。第１２図には、糸巻
歪の補正に寄与する永久磁石２０によって形成された８
極磁界成分２１を破線１６で示すように、糸巻歪に対す
る寄与の大きい蛍光面側１３に糸巻歪の補正磁界を形成
できるため、ビームスポット形状を一定に保ちながらさ
らに糸巻歪の補正の程度を強めることができる。また、
偏向コイルの巻角度幅αを、第１０図に示すように比較
的太きく形成しても所望の磁界形状が得られるため、偏
向コイルの断面積を大きくでき、抵抗値の低減を図れる
ため、偏向コイルの発熱を低減できる効果がある。FIG. 10 shows a deflection yoke l showing a third embodiment of the present invention.
FIG. Permanent magnets 2Qa and 20b are provided on the upper and lower, left and right sides of the outer periphery of the end of the deflection yoke 1 on the phosphor screen side. This permanent magnetic field 21 is an 8-pole magnetic field 21 as shown in FIG.
, and the beam spot shape 11 changes as shown in the figure. Moreover, the pincushion distortion shown in FIG. 6 is corrected by the effects of the permanent magnets 20a and 20b. On the other hand, the magnetic fields generated by the horizontal deflection coil 2 and the vertical deflection coil 3 are
As shown by the solid line 17 in FIG. 12, the non-uniform magnetic field component is a weak vinction type at both ends of the deflection yoke, and a strong barrel type at the middle part because it is provided with the magnetic piece 6 in the same way as above. The overall average tends to be barrel-shaped. As shown in FIG. 5 (cl, d), the change in beam spot shape caused by this barrel-shaped magnetic field is opposite to the change in beam spot shape caused by the permanent magnet 20, and their effects cancel each other out. As a result, a good beam spot shape can be obtained.
As the polar magnetic field component 21 is shown by the broken line 16, since a pincushion distortion correction magnetic field can be formed on the phosphor screen side 13, which has a large contribution to pincushion distortion, the degree of pincushion distortion correction can be further strengthened while keeping the beam spot shape constant. be able to. Also,
Even if the winding angle width α of the deflection coil is made relatively large as shown in FIG. 10, a desired magnetic field shape can be obtained, so the cross-sectional area of the deflection coil can be increased, and the resistance value can be reduced. This has the effect of reducing heat generation in the deflection coil.
第１３図は、本発明の他の実施例を示す偏向ヨーク１の
正面図である。同図において、偏向ヨーク１の蛍光面側
端部の外周の対角方向に永久磁石２０Ｃを備えている。FIG. 13 is a front view of a deflection yoke 1 showing another embodiment of the present invention. In the figure, a permanent magnet 20C is provided in the diagonal direction of the outer periphery of the end portion of the deflection yoke 1 on the phosphor screen side.
上記永久磁石２０ ｃの発生する磁界は、第１１図に示
す８極磁界２１とほぼ同等となる。The magnetic field generated by the permanent magnet 20c is approximately equivalent to the 8-pole magnetic field 21 shown in FIG.
したがって、第３の実施例と同様な効果を生じ、ビーム
スポット形状を良好に保ちながら、糸巻歪の補正の程度
をさらに強めることができる。Therefore, the same effect as in the third embodiment is produced, and the degree of pincushion distortion correction can be further enhanced while maintaining a good beam spot shape.
なお、偏向コイルの突合せ部７に設けた間隙部８に備え
る磁性体片６の位置は、偏向ヨークの中間部に限らず、
偏向ヨークの両端部のどちらかに延長して配置しても良
い。さらに、第１０図に示した永久磁石２０ａ、２０ｂ
の強さは異なっても良い。Note that the position of the magnetic piece 6 provided in the gap 8 provided in the abutting portion 7 of the deflection coil is not limited to the intermediate portion of the deflection yoke.
It may be arranged so as to extend to either end of the deflection yoke. Furthermore, permanent magnets 20a and 20b shown in FIG.
may have different strengths.
また、本発明の実施例では単電子ビームを発生する陰極
線管に使用する偏向ヨークについて述べたが、本発明を
複数の電子ビームを発生する陰極線管用の偏向ヨークに
適用しても良く、同様な効果を得ることができる。Further, in the embodiments of the present invention, a deflection yoke used in a cathode ray tube that generates a single electron beam has been described, but the present invention may also be applied to a deflection yoke for a cathode ray tube that generates a plurality of electron beams. effect can be obtained.
本発明によれば、磁性体片６の作用によって偏向磁界が
強められ、偏向感度が向上するとともに強いバレル形磁
界が形状され、他の磁界発生部で糸巻歪を補正する磁界
を形成することにより、良好なビームスポット形状を保
ったまま、糸巻歪を補正できる効果がある。According to the present invention, the deflection magnetic field is strengthened by the action of the magnetic piece 6, the deflection sensitivity is improved, and a strong barrel-shaped magnetic field is formed, and another magnetic field generation section forms a magnetic field that corrects pincushion distortion. This has the effect of correcting pincushion distortion while maintaining a good beam spot shape.
第１図は本発明の第１の実施例の偏向ヨークを示す斜視
図、第２図は第１図の偏向ヨークの正面図、第３図は第
１図の要部側面図、第４図は第３図のＩ−Ｉ線における
偏向ヨークの断面図、第５図は蛍光面側より見た偏向磁
界とビームスポット形状変化の説明図で、第５図（、）
はビンクツション形水平偏向磁界を、第５図（ｂ）はビ
ンクツション形垂直偏向磁界を、第５図（ｃ）はバレル
形水平偏向磁界を、第５図（ｄ）はバレル形垂直偏向磁
界をそれぞれ示すパターン図、第６図は糸巻歪を示すパ
ターン図、第７図は良好なスポット形状を示すパターン
図、第８図は本発明の第２の実施例を示す偏向ヨークの
正面図、第９図は本発明にかかわる偏向ヨークの非均−
磁界成分を示す分布図、第１０図は本発明の第３の実施
例を示す偏向ヨークの正面図、第１１図は本発明にかか
わる永久磁石によって形成される８極磁界とビームスポ
ット形状変化を示すパターン図、第１２図は、本発明の
第３の実施例にかかわる偏向ヨークの非均−磁界成分お
よび８極磁界成分を示す分布図、第１３図は本発明の他
の実施例を示す偏向ヨークの正面図である。
符号の説明
１：偏向ヨーク ２：水平偏向コイル３：垂直偏
向コイル ４：コア
６：磁性体片 ７：突合せ部
８：間隙
９ａ 、 ９ｂ ：水平偏向磁界
１０ａ、１０ｂ：垂直偏向磁界
１１：ビームスポット形状
１３：蛍光面側 １４：糸巻歪１８：へこみ部
１９：非均−磁界成分２０ａ 、 ２０ｂ
、 ２０ｃ ：永久磁石２１：８極磁界成分
代理人 弁理士 小 川 勝 男1 is a perspective view showing a deflection yoke according to the first embodiment of the present invention, FIG. 2 is a front view of the deflection yoke shown in FIG. 1, FIG. 3 is a side view of the main parts of FIG. 1, and FIG. is a cross-sectional view of the deflection yoke taken along line I-I in Figure 3, and Figure 5 is an explanatory diagram of the deflection magnetic field and beam spot shape change seen from the phosphor screen side.
5(b) shows a binction type horizontal deflection magnetic field, FIG. 5(c) shows a barrel type horizontal deflection magnetic field, and FIG. 5(d) shows a barrel type vertical deflection magnetic field. 6 is a pattern diagram showing pincushion distortion, FIG. 7 is a pattern diagram showing a good spot shape, FIG. 8 is a front view of a deflection yoke showing the second embodiment of the present invention, and FIG. The figure shows a non-uniform deflection yoke according to the present invention.
A distribution diagram showing the magnetic field components, FIG. 10 is a front view of a deflection yoke showing the third embodiment of the present invention, and FIG. 11 shows the octupole magnetic field formed by the permanent magnet according to the present invention and changes in beam spot shape. FIG. 12 is a distribution diagram showing a non-uniform magnetic field component and an octupole magnetic field component of a deflection yoke according to a third embodiment of the present invention, and FIG. 13 shows another embodiment of the present invention. FIG. 3 is a front view of the deflection yoke. Explanation of symbols 1: Deflection yoke 2: Horizontal deflection coil 3: Vertical deflection coil 4: Core 6: Magnetic piece 7: Butt portion 8: Gaps 9a, 9b: Horizontal deflection magnetic field 10a, 10b: Vertical deflection magnetic field 11: Beam spot Shape 13: Phosphor screen side 14: Pincushion distortion 18: Concave portion 19: Non-uniform magnetic field components 20a, 20b
, 20c: Permanent magnet 21: 8-pole magnetic field component Agent Patent attorney Katsuo Ogawa
Claims (1)
平偏向コイルおよび垂直偏向コイルをくら形コイルで形
成し、該くら形コイルの突合せ部で囲まれた間隙部の一
部又は全体に渡って磁性体片が配置されていることを特
徴とする偏向ヨーク。 ２、特許請求の範囲第１項に記載の偏向ヨークにおいて
、くら形偏向コイルの突合せ部にへこみ部が形成され、
該へこみ部によって形成された間隙部に磁性体片が配置
されていることを特徴とする偏向ヨーク。[Claims] 1. In a deflection yoke installed and used in a cathode ray tube, the horizontal deflection coil and the vertical deflection coil are formed of a hollow coil, and a part of the gap surrounded by the abutting portions of the hollow coils is provided. Or a deflection yoke characterized in that magnetic pieces are arranged throughout. 2. In the deflection yoke according to claim 1, a recessed portion is formed at the abutting portion of the wedge-shaped deflection coil,
A deflection yoke characterized in that a magnetic piece is disposed in a gap formed by the recess.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31621587A JPH0750591B2 (en) | 1987-12-16 | 1987-12-16 | Deflection yoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31621587A JPH0750591B2 (en) | 1987-12-16 | 1987-12-16 | Deflection yoke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01159939A true JPH01159939A (en) | 1989-06-22 |
| JPH0750591B2 JPH0750591B2 (en) | 1995-05-31 |
Family
ID=18074583
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31621587A Expired - Lifetime JPH0750591B2 (en) | 1987-12-16 | 1987-12-16 | Deflection yoke |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0750591B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0418957U (en) * | 1990-06-05 | 1992-02-18 | ||
| KR20030010902A (en) * | 2001-07-27 | 2003-02-06 | 삼성전기주식회사 | Deflection york |
-
1987
- 1987-12-16 JP JP31621587A patent/JPH0750591B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0418957U (en) * | 1990-06-05 | 1992-02-18 | ||
| KR20030010902A (en) * | 2001-07-27 | 2003-02-06 | 삼성전기주식회사 | Deflection york |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0750591B2 (en) | 1995-05-31 |
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