JPS58220339A - Color picture tube - Google Patents

Color picture tube

Info

Publication number
JPS58220339A
JPS58220339A JP10302282A JP10302282A JPS58220339A JP S58220339 A JPS58220339 A JP S58220339A JP 10302282 A JP10302282 A JP 10302282A JP 10302282 A JP10302282 A JP 10302282A JP S58220339 A JPS58220339 A JP S58220339A
Authority
JP
Japan
Prior art keywords
electron beam
field control
magnetic field
control elements
deflection magnetic
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.)
Pending
Application number
JP10302282A
Other languages
Japanese (ja)
Inventor
Michio Nakamura
中村 三千夫
Kinji Kida
木田 金治
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
Tokyo Shibaura Electric Co Ltd
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, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP10302282A priority Critical patent/JPS58220339A/en
Publication of JPS58220339A publication Critical patent/JPS58220339A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/70Arrangements for deflecting ray or beam
    • H01J29/701Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
    • H01J29/707Arrangements intimately associated with parts of the gun and co-operating with external magnetic excitation devices

Abstract

PURPOSE:To obtain a convergence-free color picture tube having excellent resolution on the entire part by improving shape of electron beam spot in the periphery of displayed picture through application of deflected field control element. CONSTITUTION:The electron beam releasing pores 5, 6, and 7 are arranged in line, and a pair of deflected field control elements 9a, 9b are provided to the center beam releasing pore 6, while a pair of deflected field control elements 8a, 8b and 10a, 10b are respectively provided to the beam releasing pores 5 and 7 in both sides. These deflected field control elements are arranged in both sides of the electron beam releasing pores in such a manner that the interval (Go) on the in-line arranging axis (X axis) or the line connecting the electron beam releasing pores in the interval opposing in the in-line arranging direction becomes maximum as compared with the interval at the other portion. The opposing area of field control element is formed in such a way as corresponding to the outline of circular electron beam releasing pores, namely to a circle. Therefore, in regard to the interval of the deflected field control elements opposing each other in both sides of the electron beam releasing pores, the minimum part is considered as (GE) while the maximum part as (GO).

Description

【発明の詳細な説明】 発明の技術分野 本発明はカラー受像管に係り、特にそのインライン配列
電子銃の偏向磁界制御素子に関する。
TECHNICAL FIELD OF THE INVENTION The present invention relates to a color picture tube, and more particularly to a deflection magnetic field control element for an in-line array electron gun.

発明の技術的背景と問題点 一般にカラー受像管Fi3本の電子ビームをシャドウマ
スクの多数の電子ビーム開孔を介して赤。
Technical Background and Problems of the Invention In general, a color picture tube FI transmits three electron beams through a large number of electron beam apertures in a shadow mask.

緑及び青に対応する蛍光体に正しく対応射突せしめてカ
ラー映像を再現している。この3本の電子ビームを発生
せしめる電子銃は通常映像面水平軸に対応する一直線状
に配列した、いわゆるインライン配列の電子銃が用いら
れている。このようなインライン配列の電子銃において
は、中央の11子ビーム(以降センタービームと称する
)に対し、て両側に配置される電子ビーム(以降サイド
ビームと称する)は当然の享年ら管軸、即ちセンタービ
ームに対して偏心している。従ってセンタービームとサ
イドビームの水平及び垂直偏向磁界から受ける作用は異
なるものとなるので、この尽では映像面全面に渡って良
好なコンバージェンスを得ることはできない。そこで偏
向磁界分布を調整して、いわゆるコンバージェンスフリ
ーとする方法が用いられている。即ち第1図に示すよう
に水千偏同磁界をビンクッション磁界(1)とし、第2
図に示すように垂直偏向磁界をバレル磁界(2)とする
ことにより両サイドビームを自動的にコンバージェンス
させるものである。
Color images are reproduced by properly colliding with phosphors corresponding to green and blue. The electron guns that generate these three electron beams are usually arranged in a straight line corresponding to the horizontal axis of the image plane, that is, a so-called in-line array electron gun is used. In such an in-line array electron gun, the electron beams placed on both sides (hereinafter referred to as side beams) are aligned with the 11-eleven beam in the center (hereinafter referred to as the center beam), which is aligned with the tube axis, i.e. It is eccentric to the center beam. Therefore, the center beam and the side beams receive different effects from the horizontal and vertical deflection magnetic fields, so it is not possible to obtain good convergence over the entire image plane. Therefore, a method is used in which the deflection magnetic field distribution is adjusted to achieve so-called convergence free. That is, as shown in Fig. 1, the water eccentric magnetic field is defined as the bottle cushion magnetic field (1), and the second
As shown in the figure, both side beams are automatically converged by using a barrel magnetic field (2) as the vertical deflection magnetic field.

しかし乍らこの場合、水平及び垂直偏向磁界は非斉一磁
界を使用しているため、コンバージェンスは良好であ”
つても偏向される電子ビームのスポット形状は第3図に
示すように映像面中央部で概略円形ビーム(3)である
が、周辺部では横長の楕円ビーム(4a) l (4b
) 、 (4G)とfi ル欠点カアIJ、映像面周辺
の解像度を劣化させる原因となっている。
However, in this case, the horizontal and vertical deflection magnetic fields use nonuniform magnetic fields, so the convergence is good.
As shown in Fig. 3, the spot shape of the electron beam that is deflected even if
), (4G) and file defects (IJ), which are the cause of deteriorating the resolution around the image plane.

発明の目的 本発明は偏向磁界制御素子を用いて映像面周辺の・1子
ビームスポツトの形状を改善し、全面に渡りI#像度の
良好なコンバージェンスフリーのカラー少種′aを得る
ことを目的とする。
Purpose of the Invention The present invention aims to improve the shape of a single-beam spot around the image plane using a deflection magnetic field control element, and to obtain a convergence-free color aperture with good I# image quality over the entire surface. purpose.

発明の概要 本発明は電子ビーム放出孔を挾んでインライン配列方向
に対向する偏向磁界制御素子の間隔をインライン配列軸
線で最も大とすることによって、各々の一対の放出孔を
挾む磁界制御素子間に水平偏向磁界に対してはバレル磁
界を、垂直偏向磁界に対してはビンクッション磁界を局
部的に形成せしめて、映像面周辺の電子ビームスポット
形状を改善するものである。
SUMMARY OF THE INVENTION The present invention is characterized by making the distance between the deflection magnetic field control elements facing each other in the inline arrangement direction with the electron beam emission hole in between the largest in the inline arrangement axis. The electron beam spot shape around the image plane is improved by locally forming a barrel magnetic field for the horizontal deflection magnetic field and a bottle cushion magnetic field for the vertical deflection magnetic field.

発明の実施例 第4図は不発明に適用されるインワイン配列り子線の偏
向磁界制御素子部分のみを映像面側から見た概略正面図
である。第4−に於て、電子ビーム放出孔(5) 、 
f6)及び(力は−iE[にインライン配列され、イン
ライン配列方向(X軸)に各電子ビーム放出孔を挾んで
一対の偏向磁界制御素子が大々配設されている。即ちセ
ンタービーム放出孔(6)には一対の偏向磁界制御素子
(9a) 、 (9b)が、両サイドビーム放出孔(5
)及び(7)には夫々一対の偏向磁界制御素子(8a)
 、 (8b)及び(loa ) 、 (10b)が夫
々配設されている。之等の偏向磁界制御素子は各々の電
子ビーム放出孔を挾んでインライン配列方向Pこ対向す
る間隔をインライン配列Qll線(X軸)或1 は各・−子ビーム放出孔の中心を結ぶ線での間隔(へ)
が他の部分の間隔よりも最も大きくなるように配設され
る。第4図に示す実施例の場合偏向磁界制御素子の対向
する部分は円形の電子ビーム放出孔の外郭、即ち円形に
対応するように形成さ最太部がX軸線上で(GO)とさ
れている。
Embodiment of the Invention FIG. 4 is a schematic front view of only the deflection magnetic field control element portion of the in-wine array girder wire applied to the invention, viewed from the image plane side. In No. 4-, electron beam emission hole (5),
f6) and (-iE[), and a pair of deflection magnetic field control elements are arranged in-line between each electron beam emission hole in the inline arrangement direction (X axis). That is, the center beam emission hole (6) includes a pair of deflection magnetic field control elements (9a) and (9b), and both side beam emission holes (5).
) and (7) each have a pair of deflection magnetic field control elements (8a).
, (8b) and (loa), (10b) are provided, respectively. These deflection magnetic field control elements sandwich each electron beam emission hole, and the inline arrangement direction P and the opposing interval are inline arrangement Qll line (X axis) or 1 is a line connecting the centers of each electron beam emission hole. interval (to)
is arranged so that the distance between the two parts is the largest compared to the other parts. In the embodiment shown in FIG. 4, the opposing parts of the deflection magnetic field control element are formed so as to correspond to the outer contour of the circular electron beam emission hole, that is, to correspond to the circular shape, and the thickest part is set at (GO) on the X-axis. There is.

偏向磁界制御素子を以上のように配置することにより、
之等の制御素子は次のように作用する。
By arranging the deflection magnetic field control elements as described above,
These control elements operate as follows.

即ち、水平偏向磁界に対しては第5図(aJ及び(b)
に示すように各々の1対の偏向磁界制御素子間に局部的
にバレル磁界を形成し、一方垂直偏向磁界に対しては第
6図(a)及び(b)に示すように各々の1対の偏向磁
界制御素子間に局部的にビンクッション磁界を形成する
。之等の偏向磁界制御素子間に形成される磁界は偏向磁
界強度に相対した強度となる。換言すれば映像面中央部
では無偏向時で偏向磁界制御素子間に磁界は形成されず
、周辺へ偏向するに伴って磁界強度は増加する。
That is, for the horizontal deflection magnetic field, Fig. 5 (aJ and (b)
A barrel magnetic field is locally formed between each pair of deflection magnetic field control elements as shown in FIG. A bottle cushion magnetic field is locally formed between the deflection magnetic field control elements. The magnetic field formed between these deflection magnetic field control elements has an intensity relative to the deflection magnetic field intensity. In other words, no magnetic field is formed between the deflection magnetic field control elements at the center of the image plane when there is no deflection, and the magnetic field strength increases as the deflection moves toward the periphery.

映像面上で電子ビームスポットをX軸上のXプラス方向
−\偏向する場合、電子銃の電子ビーム放出孔(51、
(6) 、 (7)付近に於てもXプラス方向へ逗子ビ
ームは微小偏向される。その代表例として電子ビーム放
出孔(5)付近を第7図(a)に示す。円形の電子ビー
ムaυは偏向磁界制御素子間に形成されるバレル磁界に
よって、Fl、 F、、 F、及びF4方向に力を受け
る。ここで第5図(b)に示すxilII上の垂直磁界
強度分布よりFl> Flである。この結果、電子ビー
ム放出孔近傍では第7図(b)に示すように電子L:”
 −ムのx / y平面による断再形状はy方向に長い
楕円形状(13となる。
When deflecting the electron beam spot on the image plane in the X-plus direction on the X-axis, the electron beam emission hole (51,
Even in the vicinity of (6) and (7), the forceps beam is slightly deflected in the X-plus direction. As a typical example, the vicinity of the electron beam emission hole (5) is shown in FIG. 7(a). The circular electron beam aυ is subjected to forces in the Fl, F, , F, and F4 directions by the barrel magnetic field formed between the deflection magnetic field control elements. Here, from the vertical magnetic field strength distribution on xilII shown in FIG. 5(b), Fl>Fl. As a result, as shown in FIG. 7(b), near the electron beam emission hole, the electron L:
- The resection shape of the beam on the x/y plane is an ellipse (13) long in the y direction.

又、カラー受像管の映像面上でy軸上のXプラス方向へ
偏向する場合、電子ビーム放出孔(5) 、 (6)。
When the electron beam is deflected in the X-plus direction on the y-axis on the image plane of the color picture tube, the electron beam emission holes (5) and (6).

(7)付近に於てy方向に微小偏向される。その代表例
として電子ビーム放出孔(5)付近を第8図(a)に示
す。円形の電子ビーム(11)は偏向磁界制御素子間に
形成されるビンクッション磁界によって、Fl S F
+F、及びF、方向に力を受ける。ここで第6図(b)
に示すy軸上の水平磁界強度分布よりR>Ftである。
It is slightly deflected in the y direction near (7). As a typical example, the vicinity of the electron beam emission hole (5) is shown in FIG. 8(a). The circular electron beam (11) is caused by the bottle cushion magnetic field formed between the deflection magnetic field control elements to
Forces are received in the +F and F directions. Here, Fig. 6(b)
From the horizontal magnetic field strength distribution on the y-axis shown in , R>Ft.

この結果、電子ビーム放出孔近傍では第8図(b)に示
すように電子ビームの断面形状はy方向に長い楕円形状
−となる。カラー受像管の映像面のコーす一方向に偏向
された場合には、X軸方向及びy軸方向に偏向した場合
の作用が重畳され、その結果電子ビーム放出孔近傍でも
同じくX方向に長い楕円形状の電子ビームとなる。
As a result, in the vicinity of the electron beam emission hole, the cross-sectional shape of the electron beam becomes an ellipse long in the y direction, as shown in FIG. 8(b). When the image plane of a color picture tube is deflected in one direction, the effects of deflection in the X- and Y-axis directions are superimposed, resulting in an ellipse that is also long in the X direction near the electron beam emission hole. It becomes a shaped electron beam.

以上のように電子ビーム放出孔近傍でのX方向に長い楕
円形状の電子ビームは第1図及び第2図のコンバージェ
ンスをとる為の非斉一偏向磁界に於て周辺へ偏向する時
生ずるX方向に長い楕円形状化を補正するように作用す
る。この結果、コンバージェンスフリーカラー受像管の
映像全面に渡り、第9図に示すように略々円形の電子ビ
ームスポットQ4) 、 (15,(1(i)を得るこ
とができ、映像面周辺の解像度を向上することができる
As described above, the elliptical electron beam near the electron beam emission hole, which is elongated in the Acts to correct long ellipsoidization. As a result, an approximately circular electron beam spot Q4), (15, (1(i)) can be obtained over the entire image area of the convergence-free color picture tube, as shown in FIG. can be improved.

第10図は本発明の他の実施例を示すもので、各電子ビ
ーム放出孔(5) 、 (6)及び(力を挾んで対向す
る夫々一対の偏向磁界制御素子(17a ) (17b
 ) 、 (17c )(17d)及び(17e ) 
(17f )を太旨コ字形状に構成配置1:1 したもので、第4図と同様の効果を奏する。
FIG. 10 shows another embodiment of the present invention, in which each electron beam emitting hole (5), (6) and a pair of deflection magnetic field control elements (17a) (17b) are opposed to each other with force in between.
), (17c) (17d) and (17e)
(17f) are arranged in a bold U-shape at a ratio of 1:1, and the same effect as in FIG. 4 is achieved.

又、第11図に示すように、センタービーム放出孔(6
)とサイドビーム放出孔(5)及び(7)との間の偏向
磁界制御素子を結合した形状(’181) )及び(t
8c)としてもよい。この場合、電子ビーム放出孔間の
10向磁界制御素子(18b)及び(ISC)は偏向磁
界制御素子間の局部非斉一磁界強度を増加するためにギ
ャップ(19a)及び(19b)を設けるとよい。
In addition, as shown in Fig. 11, the center beam emission hole (6
shape ('181) ) and (t
8c) may also be used. In this case, gaps (19a) and (19b) may be provided between the 10-directional magnetic field control elements (18b) and (ISC) between the electron beam emission holes in order to increase the local non-uniform magnetic field strength between the deflection magnetic field control elements. .

更に偏向磁界制御素子の効果を増大するために偏向磁界
制御素子を電子ビーム進行方向(Z)に高さを有する柱
状どしてもよい。例えば第4図の回向磁界制御素子の断
面を第12図に示すように円筒形状の偏向磁界制御素子
(20a) + (20b) + (20C) + (
加d) 。
Furthermore, in order to increase the effect of the deflection magnetic field control element, the deflection magnetic field control element may be formed into a columnar shape having a height in the electron beam traveling direction (Z). For example, as shown in FIG. 12, the cross section of the deflection magnetic field control element in FIG. 4 is a cylindrical deflection magnetic field control element (20a) + (20b) + (20C) + (
Added).

(20e ) ? (2Of >としてもよい。(20e)? (2Of) may also be used.

発明の効果 以上のように本発明によれば、コンバージェンスフリー
カラー受像管の映像面全面に渡り、特に周辺のm を度
を向上することができる。
Effects of the Invention As described above, according to the present invention, it is possible to improve the accuracy of m 2 over the entire image plane of a convergence-free color picture tube, especially in the periphery.

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

第1図はビン?、、ソション型水平偏向磁界分布を示す
模式図、42図はバレル型画直篩向磁界分イロを示す模
式図、第3図は従来のカラー受像管の映像面でのビーム
スポット形状を示す模式図、第4図は本発明に適用され
る偏向磁界制御素子の構成を示す要部の概略正面図、第
5図(a)及び(b)は第4図にJ:る峨部の垂直偏向
磁界形成分布を示す模式1−1第6図(iり及び(b)
は同じく第4図による要部の水平偏向磁界形成分布を示
す模式図、第7図(a)及び(b)は第4図のX方向偏
向時の作用を説明するための模式図、第8図(a)及び
(b)は第4図のX方向偏向時の作用を説明するための
模式図、第9図は本発明のカラー受像管の映像面でのビ
ームスポット形状を示す模式図、第10図、第11図及
び第12図は本発明の他の実施例を示す概略正面図及び
断面図である。 (511f6) l f力・・・電子ビーム放出孔(8
a) * (8b) 、 (9a) 、 (9b) 、
 (1oa) 、(1ob) 、 (i7a) 。 (17b) e (17C) * (17d) + (
17e) * (17f) e (18a ) + (
18b ) −(IBc ) 、 (18d ) 、 
(加a)、(加b) e (20C) 、 (20d)
 、 (20e) 。 (20f)・・・偏向磁界制御素子 代理人弁理士 則近wi佑(ばか1名)第  1  図
          第  2 間第  3 図 第  4 図 第5図    第6図 第 10図 第it図 第12図 166−
Figure 1 is a bottle? ,,A schematic diagram showing the horizontal deflection magnetic field distribution of the Sotion type, Figure 42 is a schematic diagram showing the distribution of the magnetic field for the barrel type sieve, and Figure 3 is a schematic diagram showing the beam spot shape on the image plane of a conventional color picture tube. 4 is a schematic front view of the main part showing the configuration of the deflection magnetic field control element applied to the present invention, and FIGS. Schematic 1-1 Figure 6 (i and (b) showing the magnetic field formation distribution
8 is a schematic diagram showing the horizontal deflection magnetic field formation distribution of the main part according to FIG. 4, FIGS. Figures (a) and (b) are schematic diagrams for explaining the action when deflecting in the X direction in Figure 4, and Figure 9 is a schematic diagram showing the beam spot shape on the image plane of the color picture tube of the present invention. FIG. 10, FIG. 11, and FIG. 12 are a schematic front view and a sectional view showing other embodiments of the present invention. (511f6) l f force...electron beam emission hole (8
a) * (8b), (9a), (9b),
(1oa), (1ob), (i7a). (17b) e (17C) * (17d) + (
17e) * (17f) e (18a) + (
18b) - (IBc), (18d),
(Kaa), (Kab) e (20C), (20d)
, (20e). (20f) ... Deflection magnetic field control element Patent attorney Norichika Wisuke (one idiot) Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 10 IT Figure 12 166-

Claims (1)

【特許請求の範囲】 1)インライン配列電子銃の電子ビーム放出孔付近に前
記電子ビーム放出孔を挾んでインライン配列方向に対向
する磁性体からなる偏向磁界制御素子を設けた電子銃を
有するカラー受像管において、前記電子ビーム放出孔を
挾んでインライン配列方向に対向する偏向磁界制御素子
の間隔を前記インライン配列軸線で最も大としたことを
特徴とするカラー受像管。 2)前記偏向磁界制御素子が電子ビーム進行方向に高さ
を有する柱状からな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。
[Scope of Claims] 1) A color image receiver having an electron gun in which a deflection magnetic field control element made of a magnetic material is provided in the vicinity of the electron beam emission hole of the inline array electron gun, sandwiching the electron beam emission hole and facing in the inline arrangement direction. 1. A color picture tube, characterized in that the distance between deflection magnetic field control elements facing each other in the in-line arrangement direction with the electron beam emission hole in between is the largest in the in-line arrangement axis. 2) The color picture tube according to claim 1, wherein the deflection magnetic field control element has a columnar shape having a height in the electron beam traveling direction.
JP10302282A 1982-06-17 1982-06-17 Color picture tube Pending JPS58220339A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10302282A JPS58220339A (en) 1982-06-17 1982-06-17 Color picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10302282A JPS58220339A (en) 1982-06-17 1982-06-17 Color picture tube

Publications (1)

Publication Number Publication Date
JPS58220339A true JPS58220339A (en) 1983-12-21

Family

ID=14343012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10302282A Pending JPS58220339A (en) 1982-06-17 1982-06-17 Color picture tube

Country Status (1)

Country Link
JP (1) JPS58220339A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0742576A2 (en) * 1995-05-12 1996-11-13 Hitachi, Ltd. Method of correcting deflection defocusing in a CRT, a CRT employing same, and an image display system including same CRT
US6005340A (en) * 1996-02-27 1999-12-21 Hitachi, Ltd. CRT, deflection-defocusing correcting member therefor, a method of manufacturing same member, and an image display system including same CRT

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0742576A2 (en) * 1995-05-12 1996-11-13 Hitachi, Ltd. Method of correcting deflection defocusing in a CRT, a CRT employing same, and an image display system including same CRT
EP0742576A3 (en) * 1995-05-12 1997-03-26 Hitachi Ltd Method of correcting deflection defocusing in a CRT, a CRT employing same, and an image display system including same CRT
US6005339A (en) * 1995-05-12 1999-12-21 Hitachi, Ltd. CRT with deflection defocusing correction
US6329746B1 (en) 1995-05-12 2001-12-11 Hitachi, Ltd. Method of correcting deflection defocusing in a CRT, a CRT employing same, and an image display system including same CRT
US6005340A (en) * 1996-02-27 1999-12-21 Hitachi, Ltd. CRT, deflection-defocusing correcting member therefor, a method of manufacturing same member, and an image display system including same CRT
US6259196B1 (en) 1996-02-27 2001-07-10 Hitachi, Ltd. CRT deflection-defocusing correcting member therefor, a method of manufacturing same member, and an image display system including same CRT

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