JPS61265989A - Color picture tube device - Google Patents

Color picture tube device

Info

Publication number
JPS61265989A
JPS61265989A JP60106957A JP10695785A JPS61265989A JP S61265989 A JPS61265989 A JP S61265989A JP 60106957 A JP60106957 A JP 60106957A JP 10695785 A JP10695785 A JP 10695785A JP S61265989 A JPS61265989 A JP S61265989A
Authority
JP
Japan
Prior art keywords
magnetic field
electron
screen
electron beam
deflecting
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
Application number
JP60106957A
Other languages
Japanese (ja)
Other versions
JPH0646812B2 (en
Inventor
Taketoshi Shimoma
下間　武敏
Kumio Fukuda
福田　久美雄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP10695785A priority Critical patent/JPH0646812B2/en
Priority to KR1019860003772A priority patent/KR890004872B1/en
Priority to EP86303792A priority patent/EP0203765B1/en
Priority to DE8686303792T priority patent/DE3668258D1/en
Priority to US06/865,352 priority patent/US4820958A/en
Publication of JPS61265989A publication Critical patent/JPS61265989A/en
Publication of JPH0646812B2 publication Critical patent/JPH0646812B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76—Deflecting by magnetic fields only

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

PURPOSE:To minimize the distortion of an electron beam spot in the periphery of a screen by giving an hourly delay when signals fed to three electron guns are mutually controlled and causing electron beams to concentrate on a phase plate or in the vicinity of said plate. CONSTITUTION:Three electron guns are constituted such that electron beams, which are arrayed in an in-line shape and emitted, can be spaced by about 6.6mm and made in parallel with each other. A deflecting device is formed with a horizontal deflecting coil which is a magnetic field deflecting electron beams in a horizontal direction and generates a simultaneous magnetic field and a vertical deflecting coil which is a magnetic field deflecting beams in a vertical direction and generates a parallel magnetic field. In terms of a 20 inch 90 deg. deflecting tube, for instance, where the lateral width of a screen (phosphor surface), a horizontal deflecting frequency, the shift amount DELTA of the electron beam spot on the screen and a constant C are about 400mm, 15.75kHz, 6.6mm and 0.75, respectively, the mutual delay time of the signals fed to three electron guns is about 0.8musec. In such a way the distortions of a core and flare are extremely less not only in the center of the screen but also in its vicinity, and the overall screen is bright with an excellent resolution.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明はインライン形カラー受像管′装置の改良に関す
る。DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD OF THE INVENTION The present invention relates to improvements in in-line color picture tube apparatus.

〔発明の技術的背景〕[Technical background of the invention]

カラー受像管の外囲器は３電子銃を内装するネックと、
蛍光面を有するフェースプレートと、ネックとフェース
プレートとの間に介在するファンネルとからなる。The envelope of the color picture tube has a neck that houses three electron guns,
It consists of a face plate with a fluorescent screen and a funnel interposed between the neck and the face plate.

３電子銃はネック内に水平方向にインライン状に装着さ
れ、射出した電子ビームを蛍光体層が被着形成された蛍
光面に射突させることにより蛍光体層を発光させる。色
再現生のよい蛍光体層の発光を実現するためには、電子
ビームを選択的に所定の蛍光体層に射突させる必要・が
あり、そのため多数の開孔を有するシャドウマスクがフ
ェースプレートに近接して配置される。A three-electron gun is installed horizontally in-line inside the neck, and causes the emitted electron beam to strike a phosphor screen on which a phosphor layer is adhered, thereby causing the phosphor layer to emit light. In order to achieve light emission from the phosphor layer with good color reproduction, it is necessary to selectively impinge the electron beam on a predetermined phosphor layer, and for this purpose a shadow mask with many holes is used on the face plate. placed in close proximity.

インライン電子銃は陰極によって３本の電子ビームを共
通平面に発生させ、これらの３電゛子ビームをフェース
プレート近辺に集中させるように設計されている０３電
子ビームを集中させる方法は、例えば米国特許第２９５
７１０６号明細書に示されていル如く、陰極から射出さ
れる電子ビームをはじめから傾斜している技術があり、
又、米国特許第３７７２５５４号明細書に示される如く
、電子銃電極に設けられた３電子ビ一ム通過用開孔のう
ち一部電極の両側の開孔を電子銃の中心軸から僅かに外
側へ偏位させることにより、電子ビームの集中を行なっ
ている技術があり、いずれも広く採用されている。The in-line electron gun is designed to generate three electron beams in a common plane using a cathode and to concentrate these three electron beams near the face plate. No. 295
As shown in the specification of No. 7106, there is a technique in which the electron beam emitted from the cathode is tilted from the beginning.
Also, as shown in U.S. Pat. No. 3,772,554, some of the three electron beam passage holes provided in the electron gun electrode are arranged on both sides of the electrode slightly outward from the central axis of the electron gun. There are techniques for concentrating the electron beam by deflecting the electron beam, and all of these techniques are widely used.

カラー受像管の画面（蛍光面）にテレビ画像を表示する
ためには、電子銃から射出した電子ビームを蛍光面全面
に走査するための偏向装置が必要となり、これはファン
ネルのコーン部の外側に取付けられる。偏向装置は基本
的には電子ビームを水平方向に偏向する水平偏向磁界を
発生するための水平偏向コイルおよび電子ビームを垂直
方向に偏向する垂直偏向磁界を発生するための垂直偏向
コイルとを有している。実際のカラー受像管装置におい
ては電子ビームを偏向したときに、３電子ビームスポツ
トのフェースプレートでの集中がくずれてくるので、こ
の集中のくずれを防止するため工夫が施されている。こ
れはコンバーゼンスフリーシステムと称され、水平偏向
磁界をピンクッション形垂直偏向磁界をバレル形にする
ことにより、蛍光面全域に於いて、３電子ビームが集中
するようにしたものである。その結果このシステムでは
コンバーゼンス補正用のパラボラ電流発生回路及びコン
バーゼンス補正磁界を発生させるコンバーゼンスヨーク
が不要になり、コスト低下、生産性向上等多くの効果が
生ずる。In order to display a television image on the screen (phosphor screen) of a color picture tube, a deflection device is required to scan the electron beam emitted from the electron gun over the entire surface of the phosphor screen. Installed. The deflection device basically includes a horizontal deflection coil for generating a horizontal deflection magnetic field that deflects the electron beam in the horizontal direction and a vertical deflection coil for generating a vertical deflection magnetic field that deflects the electron beam in the vertical direction. ing. In an actual color picture tube device, when the electron beams are deflected, the concentration of the three electron beam spots on the face plate breaks down, so measures are taken to prevent this break in concentration. This is called a convergence free system, and the horizontal deflection magnetic field is made into a pincushion shape, and the vertical deflection magnetic field is made into a barrel shape, so that three electron beams are concentrated over the entire area of the phosphor screen. As a result, this system eliminates the need for a parabolic current generating circuit for convergence correction and a convergence yoke for generating a convergence correction magnetic field, resulting in many effects such as cost reduction and productivity improvement.

〔背景技術の問題点〕[Problems with background technology]

以上述べた如く、カラーブラウン管は多くの開発技術の
採用により品位は向上しているが、管の大形化が普及す
るにつれて新たな問題がクローズアップされつつある。As mentioned above, the quality of color cathode ray tubes has been improved through the adoption of many developed technologies, but new problems are coming to the fore as the size of tubes becomes more widespread.

すなわち、３電子銃より射出され、フェースプレート上
で集中したビームスポットは、偏向作用を受けない画面
中心では第４図（ａ）に示す如く円状のコアのみを提す
るが、偏向作用を向けた画面周縁部では第４図（ｂ）の
如く偏平化したコアと、上下に広がったフレアを提する
。その結果画面周縁部では電子ビームの電子ビームのサ
イズが増大し、フォーカス性能および解像度の劣化が生
ずる。In other words, the beam spot emitted from the three electron guns and concentrated on the face plate presents only a circular core as shown in Figure 4(a) at the center of the screen where it is not subjected to deflection, but when the beam spot is The peripheral edge of the screen exhibits a flattened core and a flare that spreads upward and downward, as shown in FIG. 4(b). As a result, the size of the electron beam increases at the periphery of the screen, causing deterioration in focus performance and resolution.

具体的には、２０インチ９０度偏向管の場合コアの水平
方向寸法をＣＨ＋垂直方向寸法をＣｖとすると、画面中
心ではＣＨ＝Ｃｖ＝１．Ｏｍであるが、水平偏向端部で
はＣＨ＝２０ｎｎ、　Ｃｖ＝０．３ｍ　ときわめて偏平
形になる。又、フレアの上端から下端までの寸法Ｆｖは
１．５ｍｍ　になる。この寸法は電子ビームを水平偏向
しただけの値であるが、垂直偏向を加えた画面隅部にお
いてはさらに歪んだ寸法になる。Specifically, in the case of a 20-inch 90-degree deflection tube, if the horizontal dimension of the core is CH + the vertical dimension is Cv, then at the center of the screen CH=Cv=1. However, at the horizontal deflection end, CH=20nn and Cv=0.3m, making it extremely flat. Further, the dimension Fv from the upper end to the lower end of the flare is 1.5 mm. This dimension is the value obtained only by horizontally deflecting the electron beam, but it becomes a further distorted dimension at the corner of the screen where vertical deflection is added.

〔発明の目的〕[Purpose of the invention]

本発明は以上述べた従来の欠点を解消するためになされ
たもので、画面周縁部における電子ビームスポットの歪
を少なくした画面全域にわたって明るい高解像度が得ら
れるカラー受像管装置を提供することを目的とする。The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional art, and an object of the present invention is to provide a color picture tube device that reduces distortion of the electron beam spot at the periphery of the screen and provides bright, high resolution over the entire screen. shall be.

〔発明の概要〕[Summary of the invention]

本発明は３電子銃を水平方向にインライン状に内装した
ネックと、このネックにファンネルを介して接続され内
面に前記電子銃から射出される電子ビームの射突により
赤、緑、青３色に発光する蛍光体層が規則的に被着形成
された蛍光面を有するプレートと、このフェースプレー
トに近接配置され、前記電子ビームを選択的に前記蛍光
体層に射突させる多数の開孔を有するシャドウマスクと
、前記ファンネル外壁に装着され前記電子銃から射出さ
れる電子ビームを水平方向に偏向する偏向磁界および垂
直方向に偏向する偏向磁界を発生する偏向装置とを有す
るカラー受像管を対象とするもので、 前記電子銃から射出される電子ビームはほぼ平行である
。また前記水平偏向磁界はほぼ斉一磁界分布を形成して
おり、垂直偏向磁界はバレル形磁界分布を形成している
。また前記水平偏向磁界の管軸上の磁束密度分布の半値
幅ａは、前記密度分布の中心から蛍光面までの距離Ａの
０．１〜０．４倍の範囲に含まれる。ａはＡの０．２〜
０．３倍において、よりよい効果を奏する。ａがＡの約
０．２５倍で最良の特性を示す。The present invention has a neck in which three electron guns are installed horizontally in line, and the neck is connected to the neck through a funnel, and the inner surface of the neck is illuminated with three colors of red, green, and blue by the impact of the electron beams emitted from the electron guns. A plate having a phosphor screen on which a light-emitting phosphor layer is regularly deposited, and a large number of apertures arranged close to the face plate to allow the electron beam to selectively impinge on the phosphor layer. The object is a color picture tube having a shadow mask and a deflection device attached to the outer wall of the funnel and generating a deflection magnetic field that deflects the electron beam emitted from the electron gun in the horizontal direction and a deflection magnetic field that deflects the electron beam in the vertical direction. The electron beam emitted from the electron gun is approximately parallel. Further, the horizontal deflection magnetic field forms a substantially uniform magnetic field distribution, and the vertical deflection magnetic field forms a barrel-shaped magnetic field distribution. Further, the half width a of the magnetic flux density distribution on the tube axis of the horizontal deflection magnetic field is within the range of 0.1 to 0.4 times the distance A from the center of the density distribution to the phosphor screen. a is 0.2~ of A
A better effect is obtained at 0.3 times. The best characteristics are exhibited when a is approximately 0.25 times as large as A.

さらに前記３電子銃への振込み信号が相互に制御された
時間のずれを持つことにより、３＠、子ビームが前記フ
ェースプレート上又はプレート上近傍で集中するように
なされている。Furthermore, the transfer signals to the three electron guns have mutually controlled time lags, so that the three child beams are concentrated on or near the face plate.

以上のような構成を有する本発明カラー受像管装置に関
し、発明者が行なった実験結果に基づいてさらに詳細に
説明する。The color picture tube device of the present invention having the above configuration will be described in more detail based on the results of experiments conducted by the inventor.

発明者等は電子ビームスポットの画面周辺における歪の
最大原因は水平偏向磁界がピンクッシミン形にあること
に着目し、水平偏向磁界を斉一磁界にすることを試みた
。第５図は２０インチ９０°偏向管で第２図（ａ）に示
すような斉一形水平偏向磁界の場合の画面中心部および
画面周縁部における電子ビームスポット形状を示すもの
で、ｃＨ＝１．５閣。The inventors focused on the fact that the main cause of distortion around the screen of the electron beam spot is the horizontal deflection magnetic field having a pincushmin shape, and attempted to make the horizontal deflection magnetic field a uniform magnetic field. FIG. 5 shows the electron beam spot shapes at the center of the screen and the periphery of the screen when using a 20-inch 90° deflection tube with a uniform horizontal deflection magnetic field as shown in FIG. 2(a), where cH=1. 5 cabinets.

Ｃｙ＝０．６ｍ　となっており、コアの形状が大幅に改
良されていることがわかる。Cy=0.6m, indicating that the core shape has been significantly improved.

しかしこの電子ビームスポット形状でもまだ不十分とは
言えない。However, even this electron beam spot shape cannot be said to be insufficient.

発明者はさらに実験を続け、偏向磁界の磁束密度分布と
カラー受像管の大きさとの間に所定の関係が成立すると
フレアの形状はさらに良好になることを見出した。The inventor continued experiments and found that the shape of the flare becomes even better when a predetermined relationship is established between the magnetic flux density distribution of the deflecting magnetic field and the size of the color picture tube.

第３図は斉一形の水平偏向磁界の管軸上の磁束密度分布
と、この分布の中心から蛍光面までの距離の関係を示す
図である。FIG. 3 is a diagram showing the relationship between the magnetic flux density distribution of a uniform horizontal deflection magnetic field on the tube axis and the distance from the center of this distribution to the phosphor screen.

ここで、磁束密度分布の最大値ＢＰを示す位置を密度分
布の中心、最大値ＢＰの半値幅で定まる長さを磁路長ａ
と定義し、密度分布の中心からフェースプレートまでの
距離をＡとする。又第５図で示すようにフレアの水平方
向の寸法をＦ、、垂直方向の寸法をＦＶとすると、ａ／
ＡとＦＶ／Ｆ、との間に第６図のような関係があること
がわがった。一方Ｆｖ／Ｆ、の値は、実用面で評価する
と０．５以上２．０以下にする必要があることがわかっ
ているから、これを第６図にあてはめるとａ／Ａは０．
１以上０．４以下が実用的範囲になる。より好ましいａ
／Ａの範囲は０．２〜０．３である。最も理想的な状態
はａ／Ａ＊０．２５の場合に得られ、フレアは円形で最
小となる。Here, the position indicating the maximum value BP of the magnetic flux density distribution is the center of the density distribution, and the length determined by the half width of the maximum value BP is the magnetic path length a
, and let A be the distance from the center of the density distribution to the face plate. Also, as shown in Fig. 5, if the horizontal dimension of the flare is F, and the vertical dimension is FV, then a/
It was found that there is a relationship between A and FV/F as shown in Figure 6. On the other hand, since it is known that the value of Fv/F needs to be between 0.5 and 2.0 when evaluated from a practical standpoint, applying this to Figure 6, a/A is 0.
The practical range is 1 or more and 0.4 or less. More preferable a
The range of /A is 0.2 to 0.3. The most ideal condition is obtained when a/A*0.25, and the flare is circular and minimal.

第７ｖＭにａ／Ａ−ｉ−０，２５の場合の画面中心およ
び画面周縁部における電子ビームスポット形状を示す。The 7th vM shows the electron beam spot shapes at the screen center and the screen periphery in the case of a/A-i-0,25.

第７図において画面周縁部における電子ビームスポット
形状（ｂ）をさらに改良するには、電子銃の電子レンズ
の焦点距離を画面胴縁部で調整することにより、改良は
可能で例えば、第８図に示す如く改良される。In order to further improve the electron beam spot shape (b) at the screen periphery in FIG. 7, it is possible to further improve the electron beam spot shape (b) at the screen periphery by adjusting the focal length of the electron lens of the electron gun at the screen rim. This is improved as shown in .

以上の構成により電子ビームスポット形状は改善される
。一方３電子ビームの集中に関しては上記本発明の構成
により電子銃から射出される３電子ビームをほぼ平行に
し、かつ３電子銃に振込まれる信号が相互に制御された
時間のずれを持つようにすることによりフェースプレー
ト全面において電子ビームが集中するようになされてい
る。The above configuration improves the electron beam spot shape. On the other hand, regarding the concentration of the three electron beams, the configuration of the present invention allows the three electron beams emitted from the electron gun to be made almost parallel, and the signals sent to the three electron guns have a mutually controlled time lag. By doing so, the electron beam is concentrated over the entire surface of the face plate.

この方法について説明する。仮に３１ｉ子銃に同時に信
号を振込んだ場合にはフェースプレート上の電子ビーム
スポットは互いに一定量Δだけ離間することになる。し
かしこの方法では第１の電子銃への信号振込み時間に対
し、第２の電子銃への信号振込み時間をτだけ遅延させ
、さらに第２の電子銃への信号振込み時間に対し一１第
３の電子銃への信号振込み時間をτだけ遅延させる。こ
こで画面の横幅をＨ２水平偏向周波数をｆＨ、オーバー
スキャンで定まる定数をＣとすると遅延時間τをτ＝　
　（Ｊ−にすることにより画面全域にわたってｆ　、、
　Ｈ 電子ビームスポットの集中を実現することができる。This method will be explained. If signals were transferred to the 31i secondary guns at the same time, the electron beam spots on the face plate would be separated from each other by a certain amount Δ. However, in this method, the signal transfer time to the second electron gun is delayed by τ with respect to the signal transfer time to the first electron gun, and the signal transfer time to the second electron gun is delayed by τ. The signal transfer time to the electron gun is delayed by τ. Here, if the width of the screen is H2, the horizontal deflection frequency is fH, and the constant determined by overscan is C, the delay time τ is τ=
(By setting it to J-, f over the entire screen,
H It is possible to achieve concentration of the electron beam spot.

さて、本発明においては上記３電子ビームスポツトのず
れ量Δが１つのファクタになっているので、このΔを画
面全体にわたって一定に保つ方が好ましく、そのために
は垂直偏向磁界がバレル形である必要がある。Now, in the present invention, the deviation amount Δ of the three electron beam spots is one of the factors, so it is preferable to keep this Δ constant over the entire screen, and for that purpose, the vertical deflection magnetic field needs to be barrel-shaped. There is.

バレル形磁界がずれ量Δに与える効果は、ブＨ２Ｙ（Ｚ
−７３）ｄｚ・・・・・・■で与えられる。ここでＨ８
は磁界の非斉一性を示す係数でＨｚ＝！で定義される。The effect of the barrel-shaped magnetic field on the amount of deviation Δ is expressed by H2Y(Z
-73) dz......■. Here H8
is a coefficient indicating the nonuniformity of the magnetic field, and Hz=! Defined by

Ｙはカラー受像′ａ　！７ 管の管軸におけるビームの量で、フェースプレートに近
づくほど増大する。ｚｓはフェースプレートから偏向の
始点までの距離を表わす。従ってＹが大きいほどすなわ
ち偏向磁界のフェースプレートに近い側はどバレル磁界
がずれ量Δに与える効果が大きい。Y is color image reception 'a! 7 The amount of beam in the tube axis of the tube, which increases as it approaches the faceplate. zs represents the distance from the faceplate to the starting point of deflection. Therefore, the larger Y is, that is, the closer the deflection magnetic field is to the face plate, the greater the effect that the barrel magnetic field has on the amount of deviation Δ.

一方フレアの発生量はＪ１１□Ｙ（Ｚ　−Ｚａ）”ｄＺ
・・・■に比例する。この式■は式■に比べ（Ｚ　−Ｘ
ｓ）の効果が余分に加わっている。このことは、フレア
の発生は比較的磁界中の位置によらず、一様にフレアを
発生させることを示している。従って、フレアの発生を
極力おさえつつ、最小限の非斉一磁界で、ずれ量Δを一
定にするには、極力フェースブレート側でバレル形磁界
を形成することが重要である。On the other hand, the amount of flare generated is J11□Y(Z −Za)”dZ
...Proportional to ■. Compared to formula ■, this formula ■ is (Z −X
The effect of s) is added. This indicates that flare is generated uniformly regardless of the position in the magnetic field. Therefore, in order to keep the amount of deviation Δ constant with the minimum non-uniform magnetic field while suppressing the occurrence of flare as much as possible, it is important to form a barrel-shaped magnetic field as close to the face plate side as possible.

〔発明の実施例〕[Embodiments of the invention]

以下に本発明を実施例に基づいて説明する。第１図は本
発明の２０インチ９０度偏向のカラー受像管装置の概略
断面図である。The present invention will be explained below based on examples. FIG. 1 is a schematic cross-sectional view of a 20 inch 90 degree deflection color picture tube device of the present invention.

■はフェースプレート、■はファンネル、■はネックで
、いずれもガラス製である。フェースプレート■内面に
は赤、緑、青各色に発光する蛍光体ドツト又は蛍光体ス
トライプが規則的に配列され映像表示用の蛍光面■を形
成する。該蛍光面■に近接対向してシャドウマスク■が
配設される。■ is the face plate, ■ is the funnel, and ■ is the neck, all of which are made of glass. On the inner surface of the face plate (2), phosphor dots or stripes that emit light in red, green, and blue colors are regularly arranged to form a fluorescent screen (2) for displaying images. A shadow mask (2) is disposed close to and opposite to the fluorescent screen (2).

シャドウマスク■は通常フェースプレート■内面形状に
相似なドーム状形状をした薄い鉄板からなり、蛍光面■
と対向した部分には電子ビームが正しく蛍光体に射突す
るようあけられた多数の開孔を有している。A shadow mask ■ usually consists of a thin iron plate with a dome-like shape similar to the inner surface of the face plate ■, and a fluorescent screen ■
The portion facing the phosphor has a large number of apertures so that the electron beam can strike the phosphor correctly.

ネック（イ）内部には赤、緑、青３色に対応する３電子
銃■が封入されている。この３電子銃は水平方向にイン
ライン状に配列され射出する電子ビームが相互に約６．
６＋ｎｍの間隔をもって平行になるように構成されてい
る。各電子銃は電子ビーム発生源のカソード制御電極、
しや閉電極、集束電極、−高圧電極から構成され、各々
所定の電圧が印加される。高圧電極電圧は通常２５ｋＶ
の超高電圧でありカラー管内部が２５ｋＶの等電圧に保
持される。Inside the neck (a) are enclosed three electron guns ■ corresponding to the three colors red, green, and blue. These three electron guns are arranged in-line in the horizontal direction, and emit electron beams that are approximately 6.5 mm apart from each other.
They are configured to be parallel with an interval of 6+nm. Each electron gun has a cathode control electrode for the electron beam source,
It consists of a closed electrode, a focusing electrode, and a high voltage electrode, each of which is applied with a predetermined voltage. High voltage electrode voltage is usually 25kV
The voltage inside the collar tube is maintained at an equal voltage of 25 kV.

ファンネル■のネック（イ）接続部近傍はコーン部０と
呼ばれ通常この部分に偏向装置０）が装着される。The vicinity of the neck (A) connection part of the funnel (2) is called the cone part 0, and the deflection device 0) is usually attached to this part.

偏向装置は電子ビームを水平方向に偏向する磁界であっ
て第２図（ａ）に度すような斉一形磁界を発生する水平
偏向コイルと、垂直方向に偏向する磁界であって第２図
（ｂ）に示すようなバレル形磁界を発生する垂直偏向コ
イルより成る。偏向コイルは水平偏向磁界および垂直偏
向磁界の管軸上の磁束密度分布の半値幅ａが密度分布の
中心から蛍光面までの距離Ａの０．２５倍になるように
設計されている。The deflection device consists of a horizontal deflection coil that generates a uniform magnetic field that deflects the electron beam horizontally, as shown in Figure 2(a), and a horizontal deflection coil that generates a uniform magnetic field that deflects the electron beam in the vertical direction, as shown in Figure 2(a). It consists of a vertical deflection coil that generates a barrel-shaped magnetic field as shown in b). The deflection coil is designed so that the half width a of the magnetic flux density distribution on the tube axis of the horizontal deflection magnetic field and the vertical deflection magnetic field is 0.25 times the distance A from the center of the density distribution to the phosphor screen.

２０インチ９０度偏向管は画面（蛍光面）の横幅は約４
００閣で、水平偏向周波数１５．７５ｋＨｚ、画面上の
電子ビームスポットのずれ量Δは６．６閣、定数Ｃを０
．７５とすると、３電子銃に振込まれる信号の相互の遅
延時間は約０．８μｓｅｃである。The width of the screen (phosphor screen) for a 20 inch 90 degree deflection tube is approximately 4
00, the horizontal deflection frequency is 15.75kHz, the deviation amount Δ of the electron beam spot on the screen is 6.6K, and the constant C is 0.
．． 75, the mutual delay time of the signals transferred to the three electron guns is approximately 0.8 μsec.

以上のように構成されたカラー受像管装置は画面中心は
もとより１画面周辺においてもコアおよびフレアの歪は
極めて少なく、画面全域にわたって明るく、解像度がよ
くなっていることが確認された。It was confirmed that the color picture tube device configured as described above has very little core and flare distortion not only at the center of the screen but also at the periphery of one screen, and is bright and has good resolution over the entire screen.

別の実施例として２６インチ１．１０度偏向管を用いて
他の条件を上記実施例と同じにし、ａ／Ａが０．１の場
合および０．４の場合についてカラー受像管装置の評価
を行なったところ、従来方式のものよりよい特性を示し
た。ａ／Ａが０．２〜０．３の場合特性はさらに向上し
た。As another example, a 26-inch 1.10 degree deflection tube was used, other conditions were the same as in the above example, and a color picture tube device was evaluated for a/A of 0.1 and 0.4. When tested, it showed better characteristics than the conventional method. When a/A was 0.2 to 0.3, the characteristics were further improved.

以上の説明では無偏向状態での電子ビームはほぼ平行で
あるとして説明したが、このことは幾何学的な平行を含
むのは当然として、一定の遅延時間を信号に与えて色ず
れ補正を行うカラー受像管で無偏向時３電子ビームが不
足集中状態になって実質的に一致していないビーム状態
についてもその主旨を脱しない限り適用できることは当
然である。In the above explanation, we have explained that the electron beams in the undeflected state are almost parallel, but this naturally includes geometric parallelism, and color shift correction is performed by giving a certain delay time to the signal. It goes without saying that the present invention can also be applied to a beam state in which the three electron beams are underconcentrated and do not substantially coincide when they are not deflected in a color picture tube, as long as they do not depart from the spirit of the invention.

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

第１図は本発明のカラー受像管装置の概略断面図、第２
図は本発明に係る偏向装置の偏向磁界を説明する図、第
３図は本発明に係る水平偏向磁界の管軸上の磁束密度分
布を説明する図、第４図は従来例における電子ビームス
ポット形状を説明す、る図、第５図、第７図および第８
図は本発明に係る電子ビームスポット形状を説明する図
、第６図は本発明に係る水平偏向磁界等と電子ビームス
ポット形状との関係を説明する図である。 １・・・フェースプレート　２・・・ファンネル４・・
・ネック　　　　　　５・・・蛍光面６・・・シャドウ
マスク　　７・・・電子銃代理人　弁理士　則　近　憲
　佑（ほか１名）第　　１　図 ＜ａ＞　　斉一形ム五不　　　　　　　　（ム）バレル
形石礁巧（第　　２　図 管軸と、７繊永ｆ、度今牟 向 第　　３　図 画面中・Ｃ画面固屑ｄ季 （ｃＬン　　　　　　　　　　　　　　　　　　　　　
　　　　　　　　　（ｂ）第　　４　図 （Ａ＞４面中−’Ｑ　　　　　　　Ｃ８）画パ后因婦部
第５図 第　　６　図 （αＬ九白面中Ｃ＜ｂ＞五町問疎名ト 第　　７　図 （α）出面中ｔｃ　　　　　　　　（ｂ）出ｄ１困屑ｄ
埠第８図FIG. 1 is a schematic sectional view of a color picture tube device of the present invention, and FIG.
The figure is a diagram explaining the deflection magnetic field of the deflection device according to the present invention, Figure 3 is a diagram explaining the magnetic flux density distribution on the tube axis of the horizontal deflection magnetic field according to the present invention, and Figure 4 is the electron beam spot in the conventional example. Figures explaining the shape, Figures 5, 7 and 8
FIG. 6 is a diagram for explaining the electron beam spot shape according to the present invention, and FIG. 6 is a diagram for explaining the relationship between the horizontal deflection magnetic field and the like and the electron beam spot shape according to the present invention. 1...Face plate 2...Funnel 4...
・Neck 5...Fluorescent screen 6...Shadow mask 7...Electronic gun agent Patent attorney Kensuke Chika (and 1 other person) Figure 1<a> Uniform Mugofu (Mu) Barrel shaped stone Jiao Takumi (2nd figure tube axis, 7th line, 7th line, 3rd figure screen middle/C screen solid waste dji) (cL n)
(b) Fig. 4 (A>4th page -'Q C8) Painter's side Figure 5 Fig. 6 (αL Nine white side C During the appearance tc (b) Output d1 Difficult d
Wharf Figure 8

Claims (3)

【特許請求の範囲】[Claims] （１）３電子銃を水平方向にインライン状に内装したネ
ックと、このネックにファンネルを介して接続され内面
に前記電子銃から射出される電子ビームの射突により赤
、緑、青３色に発光する蛍光体層が規則的に被着形成さ
れた蛍光面を有するフェースプレートと、 前記フェースプレートに近接配置され前記電子ビームを
選択的に前記蛍光体層に射突させる多数の開孔を有する
シャドウマスクと、前記ファンネル外壁に装着され前記
電子銃から射出される電子ビームを水平方向に偏向する
水平偏向磁界および垂直方向に偏向する垂直偏向磁界を
発生する偏向装置とを有するカラー受像管装置において
、 前記電子銃から射出される３電子ビームは相互にほぼ平
行であり、 前記水平偏向磁界はほぼ斉一磁界分布を形成し、 前記垂直偏向磁界はバレル形磁界分布を形成し、 前記水平偏向磁界の管軸上の磁束密度分布の半値幅ａは
、前記密度分布の中心から蛍光面までの距離Ａの０．１
〜０．４倍の範囲に含まれ、前記３電子銃への振込み信
号が、相互に制御された時間のずれを持つことにより、
３電子ビームが前記フェースプレート上又はその近傍で
集中するようになされていることを特徴とするカラー受
像管装置。(1) A neck with 3 electron guns installed horizontally in-line, connected to this neck via a funnel, and created by the impact of the electron beams emitted from the electron guns on the inner surface, producing 3 colors of red, green, and blue. a face plate having a phosphor screen on which a light-emitting phosphor layer is regularly deposited; and a large number of apertures arranged close to the face plate to allow the electron beam to selectively impinge on the phosphor layer. In a color picture tube device having a shadow mask and a deflection device attached to the outer wall of the funnel and generating a horizontal deflection magnetic field that deflects the electron beam emitted from the electron gun in the horizontal direction and a vertical deflection magnetic field that deflects the electron beam in the vertical direction. , the three electron beams emitted from the electron gun are substantially parallel to each other, the horizontal deflection magnetic field forms a substantially uniform magnetic field distribution, the vertical deflection magnetic field forms a barrel-shaped magnetic field distribution, and the horizontal deflection magnetic field forms a barrel-shaped magnetic field distribution. The half width a of the magnetic flux density distribution on the tube axis is 0.1 of the distance A from the center of the density distribution to the phosphor screen.
~0.4 times, and the transfer signals to the three electron guns have a mutually controlled time lag,
3. A color picture tube device, characterized in that three electron beams are concentrated on or near the face plate. （２）前記水平偏向磁界の管軸上の磁束密度分布の半値
幅ａは、前記密度分布の中心から蛍光面までの距離Ａの
０．２〜０．３倍の範囲に含まれることを特徴とする特
許請求の範囲第１項記載のカラー受像管装置。(2) The half width a of the magnetic flux density distribution on the tube axis of the horizontal deflection magnetic field is within a range of 0.2 to 0.3 times the distance A from the center of the density distribution to the phosphor screen. A color picture tube device according to claim 1. （３）前記垂直偏向磁界は少なくともスクリーン側がバ
レル形磁界分布であることを特徴とする特許請求の範囲
第１項記載のカラー受像管装置。(3) The color picture tube device according to claim 1, wherein the vertical deflection magnetic field has a barrel-shaped magnetic field distribution at least on the screen side.
JP10695785A 1985-05-21 1985-05-21 Color picture tube device Expired - Lifetime JPH0646812B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP10695785A JPH0646812B2 (en) 1985-05-21 1985-05-21 Color picture tube device
KR1019860003772A KR890004872B1 (en) 1985-05-21 1986-05-13 Color cathode ray tube
EP86303792A EP0203765B1 (en) 1985-05-21 1986-05-19 Colour cathode ray tube device
DE8686303792T DE3668258D1 (en) 1985-05-21 1986-05-19 COLORED PIPES.
US06/865,352 US4820958A (en) 1985-05-21 1986-05-21 Color cathode ray tube device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10695785A JPH0646812B2 (en) 1985-05-21 1985-05-21 Color picture tube device

Publications (2)

Publication Number Publication Date
JPS61265989A true JPS61265989A (en) 1986-11-25
JPH0646812B2 JPH0646812B2 (en) 1994-06-15

Family

ID=14446822

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10695785A Expired - Lifetime JPH0646812B2 (en) 1985-05-21 1985-05-21 Color picture tube device

Country Status (1)

Country Link
JP (1) JPH0646812B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4900979A (en) * 1987-05-28 1990-02-13 Kabushiki Kaisha Toshiba Color cathode ray apparatus provided with dynamic convergence means

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4900979A (en) * 1987-05-28 1990-02-13 Kabushiki Kaisha Toshiba Color cathode ray apparatus provided with dynamic convergence means

Also Published As

Publication number Publication date
JPH0646812B2 (en) 1994-06-15

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