JPS6286650U

JPS6286650U -

Info

Publication number: JPS6286650U
Application number: JP17924185U
Authority: JP
Priority date: 1985-11-20
Filing date: 1985-11-20
Publication date: 1987-06-02

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例の背面図、第２図
はこの実施例のスクリーン側水平偏向磁界分布図
、第３図はこの実施例の効果を説明するためのラ
スタ上のミスコンバーゼンスを示す図、第４図は
従来の偏向ヨークの背面図、第５図はその垂直偏
向コイルおよびコアを取り除いた側面図、第６図
は第５図の―線に沿う垂直偏向磁界を示す断
面図、第７図は第５図の―線に沿う垂直偏向
磁界を示す断面図、第８図ａ，ｂにラスタの上下
端に生じる色ずれＹＨの補正用の永久磁石の作用
を説明するための図、第９図はセルフコンバーゼ
ンスと無ひずみとを実現するのに必要な管軸方向
の垂直偏向磁界分布を示す図、第１０図は従来の
偏向ヨークで生じていた色ずれＢｇを説明するた
めの図、第１１図は従来の偏向ヨークにおいて行
なわれていた色ずれＢｇを小さくする対策の一例
を説明するための図である。１……トロイダル形垂直偏向コイル、２……コ
ア、３……セパレータ、３ａ……セパレータのス
クリーン側フランジ面、４ａ，４ｂ……上下糸巻
ひずみ補正用の永久磁石、８ａ，８ｂ，８ｃ，８
ｄ……色ずれ補正用の永久磁石、９Ｆ……色ずれ
補正前のスクリーン側水平偏向磁界、１１Ｆ……
色ずれ補正後のスクリーン側水平偏向磁界、Ｚ…
…管軸、Ｘ……管軸を通る水平軸、Ｙ……管軸を
通る垂直軸。なお、図中、同一符号はそれぞれ同
一、または相当部分を示す。 Fig. 1 is a rear view of an embodiment of this invention, Fig. 2 is a horizontal deflection magnetic field distribution diagram on the screen side of this embodiment, and Fig. 3 is a diagram showing misconvergence on a raster to explain the effects of this embodiment. Figure 4 is a rear view of a conventional deflection yoke, Figure 5 is a side view of the conventional deflection yoke with its vertical deflection coil and core removed, and Figure 6 is a cross-sectional view showing the vertical deflection magnetic field along the line - in Figure 5. , FIG. 7 is a cross-sectional view showing the vertical deflection magnetic field along the line - in FIG. 5, and FIGS. Figure 9 is a diagram showing the vertical deflection magnetic field distribution in the tube axis direction necessary to achieve self-convergence and no distortion, and Figure 10 is a diagram to explain the color shift Bg that occurs in the conventional deflection yoke. and FIG. 11 are diagrams for explaining an example of measures for reducing the color shift Bg that has been taken in a conventional deflection yoke. DESCRIPTION OF SYMBOLS 1... Toroidal vertical deflection coil, 2... Core, 3... Separator, 3a... Screen side flange surface of separator, 4a, 4b... Permanent magnet for correcting upper and lower pincushion distortion, 8a, 8b, 8c, 8
d...Permanent magnet for color shift correction, 9F...Screen side horizontal deflection magnetic field before color shift correction, 11F...
Horizontal deflection magnetic field on the screen side after color shift correction, Z...
...tube axis, X...horizontal axis passing through the tube axis, Y...vertical axis passing through the tube axis. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.

Claims

[Claims for Utility Model Registration] (1) In a deflection yoke attached to a color cathode ray tube having an in-line electron gun, there are four deflection yokes separated by a horizontal axis passing through the tube axis on the screen-side flange surface of the separator and a vertical axis. A deflection yoke comprising four permanent magnets arranged in a plane area, each with a polarity that weakens the pincushion-shaped distribution of a horizontal deflection magnetic field. (2) The deflection yoke according to claim 1, wherein the mounting center positions of the four permanent magnets are within a range of 10° to 40° from the horizontal axis.