JPH0564411B2 - - Google Patents
Info
- Publication number
- JPH0564411B2 JPH0564411B2 JP16981285A JP16981285A JPH0564411B2 JP H0564411 B2 JPH0564411 B2 JP H0564411B2 JP 16981285 A JP16981285 A JP 16981285A JP 16981285 A JP16981285 A JP 16981285A JP H0564411 B2 JPH0564411 B2 JP H0564411B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- core
- deflection yoke
- slot core
- deflection
- 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.)
- Expired - Lifetime
Links
- 239000000696 magnetic material Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000226585 Antennaria plantaginifolia Species 0.000 description 1
- 201000009310 astigmatism Diseases 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、高速偏向を行う高精細デイスプレイ
のブラウン管に使用する偏向ヨークに係り、特に
均一磁界分布を発生するのに好適な偏向ヨークに
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a deflection yoke used in a high-definition display cathode ray tube that performs high-speed deflection, and particularly to a deflection yoke suitable for generating a uniform magnetic field distribution.
従来の内面に突起部が設けられたコア（以下、
スロツトコアという。）を使用した偏向ヨークに
おいて、均一磁界分布を得る方法としては、特開
昭49−64324号公報に記載のように、偏向ヨーク
の画面側のコア内面の上下に相当する位置にコア
本体とは別に半円形状の磁性体からなる間隔片を
固着させて、コア内面形状を略角形にする方法が
ある。しかしながら、本公報においては、コアの
左右方向の形状については記述されていなにた
め、垂直偏向磁界成分も含めたフオーカス特性の
改善については配慮されていなかつた。
A conventional core with a protrusion on the inner surface (hereinafter referred to as
It's called a slot core. ) In order to obtain a uniform magnetic field distribution in a deflection yoke using Another method is to fix a spacer piece made of semicircular magnetic material to make the inner surface of the core substantially rectangular. However, this publication does not describe the shape of the core in the left-right direction, and therefore no consideration was given to improving the focus characteristics including the vertical deflection magnetic field component.
一方、スロツトコアにおいて、溝を設ける位置
を規定して均一磁界を得る例としては、特公昭57
−25941号公報に記載のように、各溝の配置を45°
対角線に関して余弦分布になるようにしたものが
ある。しかしながら、本例は45°対角線における
電子ビームの非点収差による歪を補償するように
構成されたものであり、コアの水平軸と垂直軸上
には溝が設けてあり、水平および垂直軸上付近に
おいても均一磁界を得るように配慮されていなか
つた、また、溝位置だけが規定されており、突起
形状によるフオーカスに関しては全く配慮されて
いないものであつた。 On the other hand, as an example of obtaining a uniform magnetic field by specifying the position of grooves in a slot core,
− As described in Publication No. 25941, the arrangement of each groove is 45°.
There is one that has a cosine distribution about the diagonal. However, this example is configured to compensate for the distortion due to astigmatism of the electron beam in the 45° diagonal, and grooves are provided on the horizontal and vertical axes of the core. No consideration was given to obtaining a uniform magnetic field even in the vicinity, and only the groove position was specified, and no consideration was given at all to the focus due to the shape of the protrusion.
本発明の目的は、スロツトコアを有する偏向ヨ
ークにおいて、均一磁界分布を得るようにするこ
とにあり、換言すればこのようにしてフオーカス
特性の優れた偏向ヨークを提供することにある。
An object of the present invention is to obtain a uniform magnetic field distribution in a deflection yoke having a slotted core, or in other words, to provide a deflection yoke with excellent focus characteristics.
本発明の偏向ヨークは、均一磁界分布を得るた
め、スロツトコアの電子銃側に位置する突起部の
うち、水平軸と垂直軸に相当する位置以外に配設
された突起部に切欠きを設けるか、もしくは当該
部分に非磁性体からなる物体を設けるように構成
したものである。
In order to obtain a uniform magnetic field distribution, the deflection yoke of the present invention may include notches in the protrusions located at positions other than those corresponding to the horizontal and vertical axes among the protrusions located on the electron gun side of the slot core. Or, it is configured such that an object made of a non-magnetic material is provided in the relevant part.
以下、本発明の一実施例を図を用いて説明す
る。第１図は、本発明の一実施例としての偏向ヨ
ークのスロツトコアを示す図で、ａは電子銃側か
ら見た斜視図、ｂは要部を示す斜視図である。同
図において、１はスロツトコア、２は突起部、３
は切欠きである。
An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a slot core of a deflection yoke as an embodiment of the present invention, in which a is a perspective view seen from the electron gun side, and b is a perspective view showing the main parts. In the same figure, 1 is a slot core, 2 is a protrusion, and 3 is a slot core.
is a notch.
第１図に示すように、本発明の偏向ヨークはス
ロツトコア１の突起部２の電子銃側端部に切欠き
３を設けた構成になつている。 As shown in FIG. 1, the deflection yoke of the present invention has a structure in which a notch 3 is provided at the end of the projection 2 of the slot core 1 on the electron gun side.
一方、従来のスロツトコア１の電子銃側から見
た斜視図を第２図ａに、要部を示す斜視図を同図
ｂに示す。これらａ図では、切欠きが設けられて
いないことが認められるであろう。 On the other hand, FIG. 2a shows a perspective view of the conventional slot core 1 seen from the electron gun side, and FIG. 2b shows a perspective view showing the main parts. It will be appreciated that in these views a, no cutouts are provided.
また、従来のスロツトコア１を使用して、均一
磁界を発生するように略余弦分布で巻線された水
平もしくは垂直偏向コイルの偏向ヨーク中心軸方
向（ブラウン管中心軸方向）の磁界分布８の様子
を第３図に示す。同図において、１はスロツトコ
ア、２は突起部、６は水平偏向コイル、７は垂直
偏向コイル、８は磁界分布である。 In addition, using the conventional slot core 1, the state of the magnetic field distribution 8 in the direction of the deflection yoke center axis (in the direction of the cathode ray tube center axis) of a horizontal or vertical deflection coil wound with a substantially cosine distribution to generate a uniform magnetic field is shown. It is shown in Figure 3. In the figure, 1 is a slot core, 2 is a projection, 6 is a horizontal deflection coil, 7 is a vertical deflection coil, and 8 is a magnetic field distribution.
第３図に示すように、従来のスロツトコア１を
使用した偏向ヨークの磁界分布は、スロツトコア
１の電子銃側において均一磁界からピンクツシヨ
ン形に磁界が磁界分布８に示すように歪む傾向が
ある。 As shown in FIG. 3, the magnetic field distribution of a deflection yoke using the conventional slot core 1 tends to be distorted from a uniform magnetic field to a pincushion shape on the electron gun side of the slot core 1, as shown in magnetic field distribution 8.
これは、スロツトコア１の電子銃側のコア内径
が小さくなることにより、水平もしくは垂直偏向
コイルの巻線分布が画面側と電子銃側で同一であ
つても、スロツトコア突起部２間の距離が接近し
ているため、スロツトコア突起部２より発生する
磁力線４が、例えば第４図に示すように（同図は
水平偏向磁界を示す。水平・垂直偏向磁界とも均
一磁界となる巻線分布により巻線されているた
め、垂直偏向磁界の場合は、同図を90°回転させ
ればよい。）水平あるいは垂直軸以外の突起部２
に磁力線４が通りやすくなるので、同図に示すよ
うにピンクツシヨン形磁界の傾向に歪みやすくな
る。 This is because the inner diameter of the slot core 1 on the electron gun side becomes smaller, so even if the winding distribution of the horizontal or vertical deflection coil is the same on the screen side and the electron gun side, the distance between the slot core protrusions 2 becomes smaller. As a result, the lines of magnetic force 4 generated from the slot core protrusion 2, for example, as shown in FIG. Therefore, in the case of a vertical deflection magnetic field, the same figure can be rotated 90 degrees.)Protrusions 2 other than horizontal or vertical axis
Since the lines of magnetic force 4 are more likely to pass through the magnetic field, the magnetic field tends to be distorted into a pink tension type magnetic field as shown in the figure.
このように、従来のスロツトコア１を用いた偏
向ヨークの場合、偏向ヨークの全域にわたり均一
磁界分布を得ることは困難であつた。そして、こ
のような非均一磁界が発生すると、電子ビームの
スポツト径が歪み、フオーカス性能が劣化するた
め、高精細デイスプレイ画面上に表示するキヤラ
クタ等の識別が不明瞭になるなどデイスプレイの
性能低下を招く結果になる。 As described above, in the case of a deflection yoke using the conventional slot core 1, it is difficult to obtain a uniform magnetic field distribution over the entire area of the deflection yoke. When such a non-uniform magnetic field is generated, the spot diameter of the electron beam is distorted and focus performance is degraded, resulting in a decline in display performance such as obscuring the identification of characters displayed on a high-definition display screen. This results in an inviting result.
これに対し、本発明のスロツトコア１を使用し
た偏向ヨークの場合は、電子銃側のスロツトコア
突起部２のうち、水平軸と垂直軸に相当する位置
以外に配設された突起部に、切欠き３を設けるこ
とにより、この部分で発生していた磁力線４（磁
界）の歪成分を除去もしくは低減させて、偏向ヨ
ークの全域にわたり均一磁界分布を得ることがで
きるように構成したものである。すなわち、第４
図においてみられるような、水平および垂直軸以
外に位置する突起部２に向う磁力線４が低減され
て磁界の歪みが発生する要因が除去されるため、
本発明を適用することにより、第５図および第６
図に示すような均一な磁界分布８を得ることがで
きる。 On the other hand, in the case of a deflection yoke using the slotted core 1 of the present invention, a notch is formed in the protrusion of the slotted core protrusion 2 on the electron gun side that is disposed at a position other than the position corresponding to the horizontal axis and the vertical axis. 3, the distortion component of the magnetic lines of force 4 (magnetic field) generated in this portion can be removed or reduced, and a uniform magnetic field distribution can be obtained over the entire area of the deflection yoke. That is, the fourth
As seen in the figure, the lines of magnetic force 4 directed toward the protrusion 2 located outside the horizontal and vertical axes are reduced, and the cause of magnetic field distortion is eliminated.
By applying the present invention, FIGS.
A uniform magnetic field distribution 8 as shown in the figure can be obtained.
第５図、第６図は、第３図、第４図と対比する
ことにより容易に理解できるであろう。 FIGS. 5 and 6 can be easily understood by comparing them with FIGS. 3 and 4.
また、本発明の他の実施例として切欠き３の部
分に、第７図ａおよびｂに示すように非磁性体か
らなる物体５を設ければ、従来のスロツトコアと
同形状の条件で巻線、製造することができ、均一
磁界分布を従来同様の巻線設備により得ることが
できる。 In addition, as another embodiment of the present invention, if an object 5 made of a non-magnetic material is provided in the notch 3 as shown in FIGS. , and a uniform magnetic field distribution can be obtained using conventional winding equipment.
以上記載した本発明によるスロツトコアを使用
した偏向ヨークの正面図を第８図に、側面図を第
９図に示す。これらの図において、１はスロツト
コア、２は突起部、３は切欠き、５は物体、６は
水平偏向コイル、７は垂直偏向コイル、９はコイ
ル係止用ホルダである。 A front view of a deflection yoke using the slot core according to the present invention described above is shown in FIG. 8, and a side view is shown in FIG. 9. In these figures, 1 is a slot core, 2 is a projection, 3 is a notch, 5 is an object, 6 is a horizontal deflection coil, 7 is a vertical deflection coil, and 9 is a holder for locking the coil.
本発明によれば、偏向ヨークの画面側から電子
銃までの全領域にわたり、均一磁界分布を形成さ
せることができる。これにより、ブラウン管を使
用したテレビジヨンもしくはデイスプレイ画面上
のフオーカス性能を大幅に向上させる効果があ
り、高品質な画像を得ることが可能となる。
According to the present invention, a uniform magnetic field distribution can be formed over the entire region from the screen side of the deflection yoke to the electron gun. This has the effect of greatly improving the focus performance on a television or display screen using a cathode ray tube, making it possible to obtain high-quality images.
第１図は、本発明の一実施例としての偏向ヨー
クのスロツトコア部分を示す図で、ａは電子銃側
から見た斜視図、ｂは要部を示す斜視図、第２図
は、従来のスロツトコアを示す図で、ａは電子銃
側から見た斜視図、ｂは要部を示す斜視図、第３
図は、従来のスロツトコアを使用した場合の水平
もしくは垂直偏向磁界分布を示す説明図、第４図
は、従来のスロツトコアを使用した偏向ヨークの
電子銃側の水平偏向磁力線形状を示す説明図、第
５図は、本発明のスロツトコアを使用した場合の
水平もしくは垂直偏向磁界分布を示す説明図、第
６図は、本発明のスロツトコアを使用した偏向ヨ
ークの電子銃側の水平偏向磁力線形状を示す説明
図、第７図は、本発明の他の実施例によるスロツ
トコアを示す図で、ａは電子銃側から見た斜視
図、ｂは要部を示す斜視図、第８図は、本発明に
よる偏向ヨークの正面図、第９図は、本発明によ
る偏向ヨークの側面図である。
１……スロツトコア、２……突起部、３……切
欠き、４……磁力線、５……物体、６……水平偏
向コイル、７……垂直偏向コイル、８……磁界分
布、９……コイル係止用ホルダ。
FIG. 1 is a diagram showing the slot core portion of a deflection yoke as an embodiment of the present invention, in which a is a perspective view seen from the electron gun side, b is a perspective view showing the main part, and FIG. In the diagrams showing the slot core, a is a perspective view seen from the electron gun side, b is a perspective view showing the main parts, and the third
4 is an explanatory diagram showing the horizontal or vertical deflection magnetic field distribution when a conventional slot core is used. FIG. Figure 5 is an explanatory diagram showing the horizontal or vertical deflection magnetic field distribution when the slotted core of the present invention is used, and Figure 6 is an explanatory diagram showing the horizontal deflection magnetic field line shape on the electron gun side of the deflection yoke using the slotted core of the present invention. 7 are views showing a slot core according to another embodiment of the present invention, in which a is a perspective view as seen from the electron gun side, b is a perspective view showing the main parts, and FIG. The front view of the yoke, FIG. 9, is a side view of the deflection yoke according to the present invention. 1... Slot core, 2... Projection, 3... Notch, 4... Line of magnetic force, 5... Object, 6... Horizontal deflection coil, 7... Vertical deflection coil, 8... Magnetic field distribution, 9... Coil locking holder.
Claims (1)
あつて、上記コア内面の電子銃側に位置する突起
部のうち、水平軸と垂直軸に相当する位置以外に
配設された突起部に切欠きが設けられたことを特
徴とする偏向ヨーク。 ２ 上記切欠きには、非磁性体からなる物体が設
けられたことを特徴とする特許請求の範囲第１項
に記載の偏向ヨーク。[Scope of Claims] 1. A deflection yoke having a protrusion on the inner surface of the core, the protrusion being located on the electron gun side of the inner surface of the core at a position other than the position corresponding to the horizontal axis and the vertical axis. A deflection yoke characterized in that a cutout is provided in the protrusion. 2. The deflection yoke according to claim 1, wherein the notch is provided with an object made of a non-magnetic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16981285A JPS6231927A (en) | 1985-08-02 | 1985-08-02 | Deflection yoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16981285A JPS6231927A (en) | 1985-08-02 | 1985-08-02 | Deflection yoke |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6231927A JPS6231927A (en) | 1987-02-10 |
| JPH0564411B2 true JPH0564411B2 (en) | 1993-09-14 |
Family
ID=15893355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16981285A Granted JPS6231927A (en) | 1985-08-02 | 1985-08-02 | Deflection yoke |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6231927A (en) |
-
1985
- 1985-08-02 JP JP16981285A patent/JPS6231927A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6231927A (en) | 1987-02-10 |
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