JPH02183947A - Deflection yoke - Google Patents
Deflection yokeInfo
- Publication number
- JPH02183947A JPH02183947A JP256789A JP256789A JPH02183947A JP H02183947 A JPH02183947 A JP H02183947A JP 256789 A JP256789 A JP 256789A JP 256789 A JP256789 A JP 256789A JP H02183947 A JPH02183947 A JP H02183947A
- Authority
- JP
- Japan
- Prior art keywords
- deflection
- deflection yoke
- coil
- axis
- separator
- 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
- 229910000859 α-Fe Inorganic materials 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000010894 electron beam technology Methods 0.000 description 2
- 240000001549 Ipomoea eriocarpa Species 0.000 description 1
- 235000005146 Ipomoea eriocarpa Nutrition 0.000 description 1
- 241000272168 Laridae Species 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
インライン型電子銃搭載のカラー陰極線管用電磁偏向ヨ
ークに係り、詳しくは局部的な偏向歪みであるシーガル
パターンとミスコンバーゼンスを改善した偏向ヨークに
関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an electromagnetic deflection yoke for a color cathode ray tube equipped with an in-line electron gun, and more particularly to a deflection yoke that improves seagull pattern and misconvergence, which are local deflection distortions.
（従来の技術）
インライン型電子銃搭載のカラー陰極線管用偏向ヨーク
は、主に電子ビームを水平方向に偏向する水平偏向コイ
ルと、垂直方向に偏向する垂直偏向コイルと、これらの
コイルをセバレー１へし、位置決めするためのプラスチ
ック樹脂を成型したセパレータと、朝顔状のフェライト
コアとで構成されていることは周知のことである。そし
て水平偏向コイルはビンクツション型磁界分布に形成し
、垂直偏向コイルはバレル型磁界分布に形成し、コンバ
ーピンス補正回路の不要なセルフコンバーゼンスを実現
して、テレビセットあるいはデイスプレィ装置のコスト
低減を図っている。(Prior technology) A deflection yoke for a color cathode ray tube equipped with an in-line electron gun mainly consists of a horizontal deflection coil that deflects the electron beam in the horizontal direction, a vertical deflection coil that deflects the electron beam in the vertical direction, and a cable that connects these coils to Severe 1. However, it is well known that the separator is composed of a separator molded from plastic resin for positioning and a ferrite core shaped like a morning glory. The horizontal deflection coil is formed with a binction type magnetic field distribution, and the vertical deflection coil is formed with a barrel type magnetic field distribution, realizing self-convergence that does not require a convergence correction circuit, and reducing the cost of the television set or display device. There is.
しかしながらこのような磁界分布に設計しても、画面全
域に口ってミスコンバーゼンスを皆無にすることは難し
い。そのため従来、特公昭５７−５４８９７号公報に開
示されているように鞍型コイルの一部に空間を設けて局
部的に磁界分布を変化させたり、あるいは本願発明者が
既に提案した特開昭５６９１２７５号公報及び特開昭５
６−１１１６５０号公報に開示されているように、可飽
和リアクターを用いて水平偏向磁界を垂直偏向周期で動
的に変化させミスコンバーゼンスを補正する方法がある
。However, even if such a magnetic field distribution is designed, it is difficult to completely eliminate misconvergence over the entire screen. Therefore, as disclosed in Japanese Patent Publication No. 57-54897, a space has been provided in a part of a saddle-shaped coil to locally change the magnetic field distribution. Publication No. and Japanese Unexamined Patent Publication No. 5
As disclosed in Japanese Patent No. 6-111650, there is a method of correcting misconvergence by dynamically changing a horizontal deflection magnetic field in a vertical deflection period using a saturable reactor.
（発明が解決しようとする課題）
ところで、近年特に陰極線管に表示される画像や文字の
高１１細化が要求され、それに伴ない、偏向歪みや、コ
ンバーゼンス品位の向上が厳しく要求されている。その
ため従来あまり問題とされなかった第４図に示すような
局部的な偏向歪みであるガルウィングパターンやミスコ
ンバーゼンスである画面中間部めたて線の横ズレ等が問
題視され始め、前述した従来技術を用いてもこのような
極局部的な偏向歪みやミスコンバーゼンスを補正するこ
とは困難であった。(Problems to be Solved by the Invention) Incidentally, in recent years, there has been a demand for the height of images and characters displayed on cathode ray tubes to be made 11 times thinner, and along with this, improvements in deflection distortion and convergence quality have been strictly required. As a result, problems such as the gull-wing pattern, which is local deflection distortion, and misconvergence, which is horizontal deviation of the vertical line in the middle of the screen, as shown in Figure 4, which had not been a problem in the past, began to be seen as problems. It is difficult to correct such localized deflection distortion and misconvergence even when using
（課題を解決するための手段）
上記問題点を解決するため、本発明は偏向ヨークの大径
側、即ち陰極線管スクリーン側の、Ｙ＠から約２０°〜
３０°の角度位置近傍に永久磁石をそれぞれ配設するこ
とを特徴とする偏向ヨークを提供するものである。(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a deflection yoke of approximately 20° to
The present invention provides a deflection yoke characterized in that permanent magnets are respectively disposed near angular positions of 30 degrees.
（作 用）
本発明は、上述した構成により、各図に示すように４ケ
所に配設された永久磁石の磁気力により、偏向歪みと、
ミスコンバーゼンスを改善するものである。(Function) With the above-described configuration, the present invention can reduce deflection distortion by the magnetic force of permanent magnets arranged at four locations as shown in each figure.
This improves misconvergence.
（実 施 例）
本発明の一実施例を第１図〜第３図を用いて詳細に説明
する。(Example) An example of the present invention will be described in detail using FIGS. 1 to 3.
各図において、水平偏向コイル５は鞍型状に形成され、
Ｘ＠を境に上下２分割されているが、これらのコイルは
セパレータ２によって位置決めされている。このセパレ
ータ２の外面には垂直偏向コイル１が水平偏向コイル５
と同様鞍型状に形成されＹ軸を境に２分割されており、
これらのコイルは共に上記セパレータ２によって位置決
めされている。この垂直偏向コイル１を覆うように朝顔
形状のフェライトコア３が取り付けられ偏向ヨーク７を
構成している。更に本発明による偏向ヨーク７は、偏向
ヨークの大径側にＹ＠から約２０゜〜３０゛の角度位置
近傍に図に示づ極性で第１〜第１Ｖ象限に各１個の永久
磁石４１〜４４が配設されている。In each figure, the horizontal deflection coil 5 is formed in a saddle shape,
Although the coil is divided into upper and lower halves with X@ as the boundary, these coils are positioned by separators 2. A vertical deflection coil 1 and a horizontal deflection coil 5 are provided on the outer surface of this separator 2.
It is formed in a saddle shape similar to , and is divided into two with the Y axis as the border.
Both of these coils are positioned by the separator 2 described above. A morning glory-shaped ferrite core 3 is attached to cover the vertical deflection coil 1 to form a deflection yoke 7. Further, the deflection yoke 7 according to the present invention has one permanent magnet 41 in each of the first to first V quadrants with the polarity shown in the figure near the angular position of about 20° to 30° from Y@ on the large diameter side of the deflection yoke. ~44 are arranged.
次にこの永久磁石の作用について説明する。各永久磁石
４１〜４４からは、第３図に示Ｊ゛ように、磁力線６１
〜６４が発生する。この磁力線により第１象限は太矢印
に示すように赤ビーム（Ｒ）は右下方向、緑ビーム（Ｇ
）は略下方向、青ビーム（Ｂ）は左下方向に偏向力を受
ける。即ち、第■客限においてＲ，Ｇ、Ｂの３ビームは
下方ｍｆの力を受けると同時にＲは右方向Ｂは左方向の
力を受は第４図に示すような右上中間部の偏向歪みとミ
スコンバーゼンスを補正することが出来る。第■象限に
おいても第１象限と同様に赤ビーム（Ｒ）は右下方向、
緑ビーム（Ｇ）は略下方向、青ビーム（Ｂ）は左下方向
に偏向力を受け、第４図に示すような左上中間部の偏向
歪みとミスコンバーゼンスを補正することが出来る。さ
らに、第■象限。Next, the action of this permanent magnet will be explained. From each permanent magnet 41 to 44, as shown in FIG.
~64 occurs. Due to these lines of magnetic force, the first quadrant is as shown by the thick arrow, with the red beam (R) pointing toward the lower right and the green beam (G
) is deflected substantially downward, and the blue beam (B) is deflected downward to the left. In other words, at the third center, the three beams R, G, and B receive a downward force mf, and at the same time, R receives a rightward force, B receives a leftward force, and the deflection distortion occurs at the upper right middle part as shown in Figure 4. and misconvergence can be corrected. Similarly to the first quadrant, in the second quadrant, the red beam (R) is directed towards the lower right,
The green beam (G) receives a deflection force substantially downward, and the blue beam (B) receives a deflection force in the lower left direction, thereby making it possible to correct deflection distortion and misconvergence at the upper left middle portion as shown in FIG. Furthermore, the second quadrant.
第１Ｖ象限も同様に考えることにより第４図に示す左下
中間部及び右下中間部の偏向歪みとミスコンバーゼンス
を補正することが出来る。なお、永久磁石の着磁量は補
正量に応じて適宜選択すればよく、また取付位置も補正
する位置に応じてＹ軸から約２０°〜３０°の角度範囲
で適宜選べばよい。By considering the 1st V quadrant in the same way, it is possible to correct the deflection distortion and misconvergence at the lower left middle part and the lower right middle part shown in FIG. 4. The amount of magnetization of the permanent magnet may be appropriately selected depending on the amount of correction, and the mounting position may also be appropriately selected within an angular range of about 20° to 30° from the Y axis depending on the position to be corrected.
なお、本実施例においては水平及び垂直偏向コイルが鞍
型コイルの場合について述べたが、本発明はこれに限定
されることなく１−ロイダル型偏向コイルでし、あるい
は鞍型コイルとトロイダル型コイルの組み合せのセミ１
〜ロイダル型偏向ヨ１−りにも適用出来る。In this embodiment, the case where the horizontal and vertical deflection coils are saddle-shaped coils has been described, but the present invention is not limited to this, and the present invention is not limited to this. Semi 1 of the combination of
- Can also be applied to loidal type deflection yaw.
（発明の効果）
本発明によれば永久磁石（４個）を用いるだけで従来修
正の困難な偏向歪みとミスコンバーゼンスとを同時に修
正することが出来、画像の性能向上に大きな効果を発揮
し、高精細でかつ工業的価植が大なる特長を右するもの
である。(Effects of the Invention) According to the present invention, deflection distortion and misconvergence, which were conventionally difficult to correct, can be corrected at the same time by simply using four permanent magnets, which is highly effective in improving image performance. High-definition and industrial-grade printing are major features.
第１図は本発明になる偏向ヨークの側面図、第２図は本
発明になる偏向ヨークの正面図、第３図は永久磁石の作
用説明図、第４図は偏向歪み（ガルウィング）とミスコ
ンバーゼンスの説明図。
１・・・垂直偏向コイル、２・・・セパレータ、３・・
・フェライトコア、４１〜４４・・・永久磁石、６１〜
６４・・・磁力線。
図面の浄Ｍ（内容に変更なしン
才
？
才
回
手続ネｔ１３ａＦ−書
方式
平へｊ庸７５・（邦１ヅａ乃ｐ
１４９１庁長官
殿
１、事件の表示
平成１年特許願第２５６７号
２゜
発明の名称
偏向ヨーク
訊
？＋ｌｉ正をする者
事件との関係Figure 1 is a side view of the deflection yoke according to the present invention, Figure 2 is a front view of the deflection yoke according to the present invention, Figure 3 is an explanatory diagram of the action of a permanent magnet, and Figure 4 is a diagram showing deflection distortion (gull wing) and error. An explanatory diagram of convergence. 1... Vertical deflection coil, 2... Separator, 3...
・Ferrite core, 41~44...Permanent magnet, 61~
64... Lines of magnetic force. Cleaning of the drawings M (No change in content?) Proceedings 13aF-Format Heihe 75 (Japanese 1st page 1491 Director-General 1, Indication of the case 1999 Patent Application No. 2567 2゜Name of invention: deflection yoke?+li correction person case?
Claims (1)
クにおいて、該偏向ヨークの大径側の、Ｙ軸から約２０
°〜３０°の角度位置近傍に永久磁石をそれぞれ配設し
たことを特徴とする偏向ヨーク。In a deflection yoke used for an in-line color cathode ray tube, approximately 20 mm from the Y axis on the large diameter side of the deflection yoke
A deflection yoke characterized in that permanent magnets are arranged in the vicinity of angular positions of degrees to 30 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1002567A JPH0744016B2 (en) | 1989-01-09 | 1989-01-09 | Deflection yoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1002567A JPH0744016B2 (en) | 1989-01-09 | 1989-01-09 | Deflection yoke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02183947A true JPH02183947A (en) | 1990-07-18 |
| JPH0744016B2 JPH0744016B2 (en) | 1995-05-15 |
Family
ID=11532947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1002567A Expired - Lifetime JPH0744016B2 (en) | 1989-01-09 | 1989-01-09 | Deflection yoke |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0744016B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5378961A (en) * | 1991-06-19 | 1995-01-03 | Kabushiki Kaisha Toshiba | Deflection yoke apparatus |
| EP1353515A1 (en) * | 2002-04-12 | 2003-10-15 | Matsushita Display Devices (Germany) GmbH | Color picture tube and deflection system for color picture tubes with improved convergence |
-
1989
- 1989-01-09 JP JP1002567A patent/JPH0744016B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5378961A (en) * | 1991-06-19 | 1995-01-03 | Kabushiki Kaisha Toshiba | Deflection yoke apparatus |
| EP1353515A1 (en) * | 2002-04-12 | 2003-10-15 | Matsushita Display Devices (Germany) GmbH | Color picture tube and deflection system for color picture tubes with improved convergence |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0744016B2 (en) | 1995-05-15 |
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