JPS63105432A - Manufacture of color cathode-ray tube with deflecting yoke - Google Patents

Abstract

PURPOSE:To obtain a manufacture method of a color cathode-ray tube with deflecting yoke, which has a fewer necessary processes, a better quality of product after completion, and a high mass productivity, by carrying out the adjustment of the deflecting yoke after installing a deflecting yoke without adjustment as a unit, to a color cathode-ray tube main body, after the assembly work is over. CONSTITUTION:After the assembly work is over, a deflecting yoke 1 with no adjustment work is installed to a color cathode-ray tube 2 main body, and then the adjustment work of the deflecting yoke 1 is carried out to concentrate three electron beams to the deflecting yoke 1 in the deflection time in such an installation condition, so that the concentration adjustment process to the deflecting yoke unit is omitted. Thereby, the number of manufacture processes of the color cathode-ray tube with deflecting yoke is reduced extensively and the cost is also reduced. Moreover, the maximum value of the correction amount on the picture tube can be made larger more than two times the conventional way, resulting in an improvement of the color purity property.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、総合的に工数を低減させ品質を向上させた偏
向ヨーク付カラー陰極線管の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a color cathode ray tube with a deflection yoke, which reduces the number of man-hours and improves quality.

〔従来の技術〕[Conventional technology]

従来は、偏向ヨークを組上げてから、偏向ヨーク単体に
対し、標準球（又は基準球）として選定した特定のカラ
ー陰極線管に取付は組合せた状態で、標準球の３本の電
子ビームの偏向時の動的集中状態（ダイナミックコンバ
ーゼンス）が最良となるように偏向ヨークに調整作業を
施し、これを偏向ヨーク完成品としていた。Conventionally, after assembling the deflection yoke, the deflection yoke alone was attached to a specific color cathode ray tube selected as a standard bulb (or reference bulb), and when the three electron beams of the standard bulb were being deflected. Adjustments were made to the deflection yoke to achieve the best dynamic convergence, and this was made into a completed deflection yoke.

従って、従来、偏向コイル付カラー陰極線管を製造する
際には、偏向コイル単体で一旦上記のようなダイナミッ
クコンバーゼンス調整を行った偏向コイルをカラー陰極
線管本体に取付は組合せて動的集中状態を調べ、必要な
らば再度ダイナミックコンバーゼンスの調整を行ってい
た。Therefore, conventionally, when manufacturing a color cathode ray tube with a deflection coil, the dynamic convergence state was checked by attaching the deflection coil to the color cathode ray tube body and then combining the deflection coil after performing the dynamic convergence adjustment as described above. , if necessary, the dynamic convergence was adjusted again.

偏向ヨークのダイナミックコンバーゼンスの調整作業は
、偏向コークの内、外面にフェライト入りゴムシートを
貼ったり、フェライト捧、フェライト板、或いは小型永
久磁石を取付けたりするほか、偏向ヨークと陰極線管（
のネック管）との間に残存する僅かな隙間を利用して取
付は角度を変えたり、偏向ヨークの陰極線管に対する取
付は位置を管軸方向にずらして見るなど、偏向コイルに
偏向電流を流したときに３本の電子ビーム夫々に作用す
る偏向磁界を調整する作業であって、熟練した技術を必
要とし、かつ工数を要する作業である。Adjustment of the dynamic convergence of the deflection yoke involves pasting ferrite-containing rubber sheets on the inner and outer surfaces of the deflection cork, attaching ferrite plates, ferrite plates, or small permanent magnets, as well as adjusting the deflection yoke and cathode ray tube (
When installing the deflection yoke to the cathode ray tube, you can change the mounting angle by using the small gap remaining between the neck tube (of the neck tube), or shift the position of the deflection yoke to the tube axis in order to pass the deflection current through the deflection coil. The work is to adjust the deflection magnetic fields that act on each of the three electron beams when the electron beams are bent, and this work requires a skilled technique and a lot of man-hours.

単体で上記のような複雑なダイナミックコンバーゼンス
調整を済ませた偏向ヨークでも、標準球とは異なるカラ
ニ陰極線管に組合わせると、カラー陰極線管同士の間の
避は難いばらつきのために、偏向ヨーク単体で行ったダ
イナミックコンバーゼンスの調整が殆ど役に立たない場
合も生じ、更に、単体での調整に際し上記のような種々
の調整部品を取付けてしまったため、再開整時には却っ
て十分なダイナミックコンバーゼンス補正をすることが
出来ず、微補正の補正限界、例えば最大で１１ｆｉ程度
があり、完成後の品質確保が困難で、そのため品質変動
が大きくなるなどの問題が生じていた。なお上記再開整
時には、調整部品は偏向ヨークの外部から取付ける。偏
向ヨーク付カラー陰極線管製作の際に、偏向ヨークのダ
イナミックコンバーゼンスの再調整に要する工数は、こ
の陰極線管を製作する全工数の８０〜９０％を占めるほ
ど大きい。なお、偏向ヨークの取付構造としては例えば
実開昭４８−８６７１６号公報に開示されている。Even if the deflection yoke alone has undergone the complex dynamic convergence adjustment described above, when combined with a Kalani cathode ray tube that is different from the standard bulb, the deflection yoke alone will not be able to handle it due to the unavoidable variations between color cathode ray tubes. There are cases where the dynamic convergence adjustment that you have made is almost useless, and furthermore, because various adjustment parts such as those mentioned above were installed when adjusting the unit alone, it may be impossible to make a sufficient dynamic convergence correction when restarting the adjustment. , there is a correction limit for fine correction, for example, a maximum of about 11 fi, making it difficult to ensure quality after completion, resulting in problems such as large quality fluctuations. Note that during the above-mentioned re-adjustment, the adjustment parts are attached from the outside of the deflection yoke. When manufacturing a color cathode ray tube with a deflection yoke, the number of man-hours required to readjust the dynamic convergence of the deflection yoke is so large that it accounts for 80 to 90% of the total number of man-hours required to manufacture the cathode ray tube. A mounting structure for the deflection yoke is disclosed in, for example, Japanese Utility Model Application No. 48-86716.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

本発明は上記従来の偏向コーク付カラー陰極線管の製造
方法によって生じていた問題点を解決し、所要工数が少
なく、完成後の品質も良好な、量産性の高い偏向ヨーク
付カラー陰極線管の製造方法を提供することを目的とす
る。The present invention solves the problems caused by the above-mentioned conventional method for manufacturing color cathode ray tubes with deflection yokes, and manufactures color cathode ray tubes with deflection yokes that require less man-hours, have good quality after completion, and are highly mass-producible. The purpose is to provide a method.

〔問題点を解決するための手段〕[Means for solving problems]

上記問題点を解決するために本発明においては、組上げ
作業後に単体としての調整作業を経ていない偏向ヨーク
をカラー陰極線管本体に取付は組合せてから、この組合
せた状態で偏向時に３本の電子ビームが集中するように
偏向ヨークの調整作業を行い、偏向ヨーク単体に対する
集中状態調整工程を省略することにした。In order to solve the above problems, in the present invention, the deflection yoke, which has not undergone adjustment work as a single unit after assembly work, is attached to the color cathode ray tube main body and then assembled, and in this combined state, three electron beams are emitted during deflection. We decided to adjust the deflection yoke so that it was concentrated, and omit the concentration adjustment process for the deflection yoke alone.

〔作用〕[Effect]

従来、実際には余り役に立たない場合も見られた偏向ヨ
ーク単体でのダイナミックコンバーゼンス調整工程を省
略してしまったから、そのために費やしていた工数や部
材が全く不要となることは勿論、完成品相互間で避は難
いかなりのばらつきを有するカラー陰極線管本体それぞ
れに対し、各管独自の性質に合わせて其の管と組合せる
偏向ヨークに対して最適の調整を行うことが出来る（表
示画面上で従来の約２倍程度の寸法まで補正できる）よ
うになり、完成球の品質も向上する。各カラー陰極線管
本体と単体未調整偏向ヨークとの組合せ調整に要する工
数が、従来の単体で調整済みの偏向ヨークをカラー陰極
線管本体に組合せ調整する場合の工数より大きくなるこ
ともあるが、全工程を通じて見れば調整工数が少なくな
り、しかも品質良好な偏向ヨーク付カラー陰極線管の完
成球が、従来よりも安い原価で製造できることになる。Since we have omitted the dynamic convergence adjustment process for the deflection yoke alone, which was previously found to be of little use in practice, the man-hours and materials that were previously spent on it are no longer necessary, and the difference between the finished products can be improved. It is possible to make optimal adjustments to the deflection yoke that is combined with each color cathode ray tube body in accordance with the unique characteristics of each color cathode ray tube, which has considerable variations that are difficult to avoid. The dimensions of the ball can be corrected to approximately twice that of the original ball), and the quality of the finished ball also improves. The man-hours required to adjust the combination of each color cathode-ray tube body and a single, unadjusted deflection yoke may be greater than the man-hours required to adjust the combination of a conventional single-adjusted deflection yoke to the color cathode-ray tube body. Viewed throughout the process, the number of adjustment steps will be reduced, and a completed color cathode ray tube with a deflection yoke of good quality can be manufactured at a lower cost than in the past.

〔実施例〕〔Example〕

本発明の実施例を次頁の第１表に示す偏向ヨーク調整作
業概要により説明する。表中の１’！ａｇ、はマグネッ
ト組立を示し、公知の如く、２極、４極、第１表　偏向
ヨーク詭浩Ｗロ耐翳戻 ６極に着磁した円環状永久磁石板を夫々２枚ずつ組合せ
、偏向ヨークのステムに近い端部に取付けて、無偏向状
態の画面中心部で３本の電子ビームのスタティックコン
バーゼンス（ＳＴＣ）のｔｊｌ整に用いる。An embodiment of the present invention will be explained with reference to an outline of the deflection yoke adjustment work shown in Table 1 on the next page. 1' in the table! ag indicates a magnet assembly, and as is well known, two annular permanent magnet plates magnetized into two poles, four poles, and six poles are assembled to form a deflection yoke. It is attached to the end near the stem and used to adjust the static convergence (STC) of three electron beams at the center of the screen in an undeflected state.

偏向ヨークの製作工程には、コイル組上げ以降に、基本
調整として４工程、次にダイナミックコンバーゼンス補
正作業として４工程あり、更に仕上げ工程もある。これ
らの工程中、・印の工程は、偏向ヨーク付カラー陰極線
管の調整作業でも必ず実施しなければならない作業であ
り、これらが重複作業となっている。本発明を実施すれ
ば、これらの重複作業を省略できることになり、品質が
良い偏向ヨーク付きカラー陰極線管を、低原価で生産で
きることになる。The manufacturing process for the deflection yoke includes four steps for basic adjustment after coil assembly, then four steps for dynamic convergence correction work, and a finishing step. Among these steps, the steps marked with * must be performed even when adjusting a color cathode ray tube with a deflection yoke, and these steps are redundant. By implementing the present invention, these redundant operations can be omitted, and a high-quality color cathode ray tube with a deflection yoke can be produced at a low cost.

第１図は本発明の方法により製造された偏向ヨーク付カ
ラー陰極線管の一例を示す平面図で、図中、１は偏向ヨ
ーク、２はカラー陰極線管、３はマグネット組立、４は
偏向ヨーク付カラー陰極線管である。FIG. 1 is a plan view showing an example of a color cathode ray tube with a deflection yoke manufactured by the method of the present invention, in which 1 is a deflection yoke, 2 is a color cathode ray tube, 3 is a magnet assembly, and 4 is a color cathode ray tube with a deflection yoke. It is a color cathode ray tube.

〔発明の効果〕〔Effect of the invention〕

以上説明したように本発明によれば、偏向コイル付きカ
ラー陰極線管の製造工程数が大幅に減少されて原価が低
減され、しかも画面上での補正量の最大値が、従来の２
倍以上まで補正できるようになり、色純度特性を向上さ
せることが出来る。As explained above, according to the present invention, the number of manufacturing steps for a color cathode ray tube with a deflection coil is significantly reduced, and the cost is reduced.
It is now possible to correct up to twice as much or more, and it is possible to improve color purity characteristics.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明に係る方法により製造された偏向ヨーク
付カラー陰極線管の一例を示す平面図である。FIG. 1 is a plan view showing an example of a color cathode ray tube with a deflection yoke manufactured by the method according to the present invention.

Claims (1)

【特許請求の範囲】[Claims] １、カラー陰極線管本体に偏向ヨークとマグネット組立
を装着した偏向ヨーク付カラー陰極線管の製造方法にお
いて、組上げ作業後に単体としての調整作業を行ってい
ない偏向ヨークをカラー陰極線管本体に取付け組合せて
から、この組合せた状態で偏向時に３本の電子ビームが
集中するように偏向ヨークの調整作業を行うことを特徴
とする偏向ヨーク付カラー陰極線管の製造方法。1. In the manufacturing method of a color cathode ray tube with a deflection yoke, in which a deflection yoke and a magnet assembly are attached to the color cathode ray tube body, the deflection yoke, which has not been adjusted as a single unit after assembly, is attached and assembled to the color cathode ray tube body. A method for manufacturing a color cathode ray tube with a deflection yoke, comprising adjusting the deflection yoke so that three electron beams are concentrated during deflection in this combined state.