JPH03219536A - Monochrome cathode-ray tube device - Google Patents

Monochrome cathode-ray tube device

Info

Publication number
JPH03219536A
JPH03219536A JP1268690A JP1268690A JPH03219536A JP H03219536 A JPH03219536 A JP H03219536A JP 1268690 A JP1268690 A JP 1268690A JP 1268690 A JP1268690 A JP 1268690A JP H03219536 A JPH03219536 A JP H03219536A
Authority
JP
Japan
Prior art keywords
deflection
pair
coils
ray tube
vertical
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
JP1268690A
Other languages
Japanese (ja)
Inventor
Tadanori Okada
忠典 岡田
Hirobumi Ueno
博文 上野
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
Toshiba Development and Engineering Corp
Original Assignee
Toshiba Corp
Toshiba Electronic Device Engineering 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, Toshiba Electronic Device Engineering Co Ltd filed Critical Toshiba Corp
Priority to JP1268690A priority Critical patent/JPH03219536A/en
Publication of JPH03219536A publication Critical patent/JPH03219536A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To obtain a CRT having superfine focusing performance and less raster deflection by connecting a pair of auxiliary coils in parallel to a pair of horizontal coils and a saturable reactor controlled by a vertical deflecting current to one-side ends of the horizontal and auxiliary coils. CONSTITUTION:A pair of auxiliary coils 11a, 11b are connected in parallel to a pair of horizontal deflecting coils 10a, 10b, respectively, a saturable reactor 12 is connected to one end of each coil, and a pair of vertical deflecting coils 13a, 13b are connected to the reactor in series. A differential coil 14 is also connected to the reactor 12. At the time of operation, a barrel magnetic field is formed by the auxiliary coils 11a, 11b, and the saturable reactor is operated by the current of vertical deflection to vary the balance of currents i1, i2, whereby the vertical balance of the magnetic fields formed by both the coil pairs can be controlled. Further, the vertical focusing balance of a phosphor screen can be adjusted by the differential coil 14, and a raster screen having a superfine focusing level and less deflection can be obtained.

Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) この発明はモノクローム陰極線管装置に係り、特にその
偏向装置の改良に関する。
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a monochrome cathode ray tube device, and particularly to improvements in its deflection device.

(従来の技術) 従来、モノクローム陰極線管装置は第7図に示すように
構成され、モノクローム陰極線管1には偏向装置2が装
着されている。そして、モノクローム陰極線管1は、次
のように構成されている。
(Prior Art) Conventionally, a monochrome cathode ray tube device is constructed as shown in FIG. 7, and a deflection device 2 is attached to a monochrome cathode ray tube 1. The monochrome cathode ray tube 1 is constructed as follows.

即ち、モノクローム陰極線管1のガラスバルブはパネル
3と、このパネル3に接合された漏斗状ファンネル4と
、このファンネル4に接合された有底筒状ネック5より
なっている。パネル5内面には蛍光体スクリーン6が形
成され、ネ・ツク5内には電子銃7が封入されている。
That is, the glass bulb of the monochrome cathode ray tube 1 consists of a panel 3, a funnel-shaped funnel 4 joined to the panel 3, and a cylindrical neck 5 with a bottom joined to the funnel 4. A phosphor screen 6 is formed on the inner surface of the panel 5, and an electron gun 7 is enclosed within the neck 5.

一方、偏向装置2は、一対の水平偏向コイルと一対の垂
直偏向コイルよりなり、モノクローム陰極線管1のファ
ンネル4とネック5の境界付近に装着されている。
On the other hand, the deflection device 2 consists of a pair of horizontal deflection coils and a pair of vertical deflection coils, and is mounted near the boundary between the funnel 4 and the neck 5 of the monochrome cathode ray tube 1.

このようなモノクローム陰極線管装置は、電子銃7より
射出された電子ビーム8を偏向装置2によって偏向し、
蛍光体スクリーン6の所定位置に射突し、発光させてい
る。
Such a monochrome cathode ray tube device deflects an electron beam 8 emitted from an electron gun 7 by a deflection device 2,
It hits a predetermined position on the phosphor screen 6, causing it to emit light.

ところで、偏向装置2の性能上重視されるのが、ラスタ
歪と電子ビーム8の偏向収差である。
By the way, what is important in terms of performance of the deflection device 2 are raster distortion and deflection aberration of the electron beam 8.

モノクローム陰極線管装置のラスタ歪は、−船釣に第8
図に示すように糸巻型の歪を有している。
The raster distortion of a monochrome cathode ray tube device is
As shown in the figure, it has pincushion-shaped distortion.

従来、この歪は、静磁石の付加、又は受動回路補正によ
って比較的容易に補正出来た。
Conventionally, this distortion could be corrected relatively easily by adding a static magnet or by passive circuit correction.

更に、電子ビーム8の偏向収差は第9図に示すように、
特に蛍光体スクリーン6の中心より離れた水平軸端、対
角軸端はど著しく、フォーカス性能が劣化するが、従来
技術では15″〜17′サイズまでは許容の範囲であっ
た。
Furthermore, the deflection aberration of the electron beam 8 is as shown in FIG.
In particular, the focusing performance deteriorates particularly at the horizontal axis ends and diagonal axis ends far from the center of the phosphor screen 6, but in the prior art, sizes from 15'' to 17' were within the allowable range.

しかしながら近年は、超高精細フォーカスレベルの要求
と、更には蛍光体スクリーン6の大形化、フラット化(
FS)、陰極線管の広角化による偏向角増加の要求等に
より、上記不具合であるラスタ歪、電子ビーム偏向収差
は増大する方向にある。
However, in recent years, there has been a demand for ultra-high-definition focus levels, and the phosphor screen 6 has become larger and flatter (
FS), the above-mentioned problems such as raster distortion and electron beam deflection aberration are increasing due to the demand for increasing the deflection angle due to the widening of the angle of view of cathode ray tubes.

超高精細フォーカスレベルの達成には、電子ビーム8の
偏向収差をなくすために、偏向装置2の偏向磁界を斉一
化することが効果的であるが、蛍光体スクリーン6の大
形化、フラット化(F S)、偏向角の増加に伴い、そ
の場合のラスタ歪は更に増加する結果となり、従来の静
磁石の付加、又は受動回路による補正では十分な補正は
極めて困難である。
To achieve an ultra-high-definition focus level, it is effective to unify the deflection magnetic field of the deflection device 2 in order to eliminate the deflection aberration of the electron beam 8. However, increasing the size and flattening of the phosphor screen 6 is effective. (F S), as the deflection angle increases, the raster distortion in that case further increases, and it is extremely difficult to sufficiently correct it by adding a static magnet or using a passive circuit.

そこで、特に収差の大なる水平偏向に対し、偏向装置2
の上下一対のメインコイル部の磁界分布を、蛍光体スク
リーン6側において強いピン磁界を形成し、ネック5側
においては強いバレル磁界と非斉一磁界を形成すること
により、水平偏向時の偏向収差を等測的に軽減し、更に
ラスタ歪の特に上下ピン歪の補正をも行なう方法が、最
も効果的であると考えられる。
Therefore, especially for horizontal deflection with large aberrations, the deflection device 2
By forming a strong pin magnetic field on the phosphor screen 6 side and a strong barrel magnetic field and a non-uniform magnetic field on the neck 5 side, the deflection aberration during horizontal deflection is reduced. It is considered that the most effective method is to reduce isometrically and also correct raster distortion, especially upper and lower pin distortion.

しかしながら従来の技術では、偏向装置2の水平偏向コ
イルのネック5側に強いバレル磁界を形成することは、
スペースファクタからも非常に困難である。又、仮に前
述のネック5側の強いバレル磁界が形成され、蛍光体ス
クリーン6の水平軸端で最適フォーカスを得るネック5
側のバレル磁界の量が形成出来たとしても、蛍光体スク
リーン6の対角軸で必ずしも良好な結果が得られるとは
限らない、と言う欠点がある。
However, in the conventional technology, it is difficult to form a strong barrel magnetic field on the neck 5 side of the horizontal deflection coil of the deflection device 2.
It is also very difficult due to the space factor. Also, if a strong barrel magnetic field is formed on the side of the neck 5 described above, the neck 5 can achieve optimal focus at the horizontal axis end of the phosphor screen 6.
The drawback is that even if a large amount of barrel magnetic field can be formed on the side, good results will not necessarily be obtained on the diagonal axis of the phosphor screen 6.

これは、対角軸への偏向は水平軸偏向と、垂直偏向の合
成による複合磁界であることから、モノクローム陰極線
管のスクリーン・ザイズ、偏向角などによるシステムの
違いに伴い、フォーカス特性がアンダー又はオーバーと
なってしまうことによるものである。
This is because the deflection to the diagonal axis is a composite magnetic field resulting from the combination of the horizontal axis deflection and the vertical deflection, and due to system differences such as the screen size and deflection angle of monochrome cathode ray tubes, the focus characteristics may be under or This is due to the overflow.

(発明が解決しようとする課8) 上記のように、モノクローム陰極線管装置のフォーカス
特性向上と、蛍光体スクリーンの大形化、フラット化、
偏向角の増加等が必要な現状において、超高精細に対応
可能なフォーカス性能と簡便なラスター歪補正の両立は
、従来の技術では困難である。
(Issue 8 to be solved by the invention) As mentioned above, it is necessary to improve the focus characteristics of monochrome cathode ray tube devices, increase the size and flatness of phosphor screens,
In the current situation where it is necessary to increase the deflection angle, etc., it is difficult to achieve both focusing performance that can support ultra-high definition and simple raster distortion correction using conventional techniques.

この発明は、上記事情に鑑みなされたもので、超高精細
に対応するフォーカス性能とラスター歪の少ない偏向装
置を備えたモノクローム陰極線管装置を提供することを
目的とする。
The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a monochrome cathode ray tube device having focus performance compatible with ultra-high definition and a deflection device with little raster distortion.

[発明の構成コ (課題を解決するための手段) この発明は、偏向装置のネック側に、偏向装置の水平偏
向コイルに並列に接続されてバレル磁界を形成させる補
助コイルを備え、且つ垂直偏向電流で制御される過飽和
リアクタが水平偏向コイルと補助コイルに接続されたモ
ノクローム陰極線管装置である。
[Structure of the Invention (Means for Solving the Problem) This invention includes an auxiliary coil connected in parallel to the horizontal deflection coil of the deflection device to form a barrel magnetic field on the neck side of the deflection device, and a vertical deflection coil connected in parallel to the horizontal deflection coil of the deflection device to form a barrel magnetic field. It is a monochrome cathode ray tube device with a current controlled supersaturation reactor connected to a horizontal deflection coil and an auxiliary coil.

(作用) この発明によれば、水平偏向コイルと補助コイルによっ
て形成される水平偏向磁界を垂直偏向に同期して変化さ
せることにより、超高精細に対応出来るフォーカス性能
をスクリーン全面で実現すると共にラスタ歪を軽減する
ことが出来る。
(Function) According to the present invention, by changing the horizontal deflection magnetic field formed by the horizontal deflection coil and the auxiliary coil in synchronization with the vertical deflection, focusing performance that can support ultra-high definition can be achieved over the entire screen, and raster Distortion can be reduced.

(実施例) 以下、図面を参照して、この発明の一実施例を詳細に説
明する。
(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

一実施例を説明する前に、先ずこの発明の考え方につき
述べることにする。
Before explaining one embodiment, the concept of this invention will first be described.

第9図に示すような電子ビーム偏向収差は、特にその水
平偏向の場合において、偏向装置のネック側に上下に設
けた補助コイル(後述)による第3図に示すようなバレ
ル磁界を強くすれば、第4図に示すように電子ビーム8
の偏向方向への拡がりを抑制し、水平偏向コイルのスク
リーン側の磁界を強いピン磁界にすることで、補助コイ
ルで作る磁界と合わせ、等測的に斉一磁界に近い効果を
与え、電子ビーム8の偏向収差を抑えることが出来る。
The electron beam deflection aberration shown in Fig. 9 can be solved by strengthening the barrel magnetic field shown in Fig. 3 by auxiliary coils (described later) installed above and below the neck side of the deflection device, especially in the case of horizontal deflection. , the electron beam 8 as shown in FIG.
By suppressing the spread in the deflection direction and making the magnetic field on the screen side of the horizontal deflection coil a strong pin magnetic field, together with the magnetic field created by the auxiliary coil, an effect close to a uniform magnetic field is obtained isometrically, and the electron beam 8 The deflection aberration can be suppressed.

対角偏向については、予め最適設定された過飽和リアク
タの効果によって、補助コイルの磁界分布は第5図に示
すように変化する。又、水平偏向コイルの受ける影響も
同様であり、これによって垂直偏向に同期した形で水平
偏向コイルと補助コイルが作る磁界の水平軸と対角軸の
バランスを適正化し、水平偏向の場合と同様の効果を得
ることが出来る。
Regarding the diagonal deflection, the magnetic field distribution of the auxiliary coil changes as shown in FIG. 5 due to the effect of the supersaturation reactor that is optimally set in advance. In addition, the influence of the horizontal deflection coil is similar, and as a result, the balance between the horizontal axis and the diagonal axis of the magnetic field created by the horizontal deflection coil and the auxiliary coil is optimized in synchronization with the vertical deflection, and the same effect as in the case of horizontal deflection is achieved. You can get the effect of

又、第6図に示すように、水平偏向コイルのスクリーン
側の強いピン磁界9によって、上下ビン歪みを補正する
ことが出来る。
Further, as shown in FIG. 6, the upper and lower bin distortions can be corrected by a strong pin magnetic field 9 on the screen side of the horizontal deflection coil.

そこで、この発明のモノクローム陰極線管装置における
偏向装置は第1図及び第2図に示すように構成され、一
対の水平偏向コイル10a。
Therefore, the deflection device in the monochrome cathode ray tube device of the present invention is constructed as shown in FIGS. 1 and 2, including a pair of horizontal deflection coils 10a.

10bにそれぞれ並列に一対の補助コイル11a111
bが接続されている。
A pair of auxiliary coils 11a111 each in parallel with 10b.
b is connected.

更に、これら水平偏向コイル10a、1.Ob及び補助
コイルlla、llbの一端には、垂直偏向電流で制御
される可飽和リアクタ12が接続されている。この可飽
和リアクタ12には、直列接続された一対の垂直偏向コ
イル13a、13bが、直列に接続されている。又、可
飽和リアクタ12には、差動コイル14が接続されてい
る。
Furthermore, these horizontal deflection coils 10a, 1. A saturable reactor 12 controlled by a vertical deflection current is connected to one end of Ob and auxiliary coils lla and llb. A pair of vertical deflection coils 13a and 13b are connected in series to this saturable reactor 12. Further, a differential coil 14 is connected to the saturable reactor 12 .

尚、第2図は補助コイルlla、llbを示したもので
、図中の15a、15bはコアを示している。
Incidentally, FIG. 2 shows the auxiliary coils lla and llb, and 15a and 15b in the figure indicate cores.

さて動作時には、補助コイルlla、llbにより第3
図に示すようなバレル磁界を作るが、垂直偏向の電流に
より可飽和リアクタ12が動作し、電流il、12のバ
ランスを可変し、水平偏向コイル10a、10bと補助
コイルlla、llbの作る磁界の上下バランスを制御
することが出来る。
Now, during operation, the third
To create a barrel magnetic field as shown in the figure, the saturable reactor 12 is operated by the vertical deflection current, and the balance of the currents il and 12 is varied, and the magnetic field created by the horizontal deflection coils 10a and 10b and the auxiliary coils lla and llb is Vertical balance can be controlled.

更に、差動コイル14により、蛍光体スクリーン6の上
下フォーカスバランスを調整することが可能となり、こ
れによりモノクローム陰極線管装置の製造バラツキなど
のための上下非対称成分によるフォーカスの上下アンバ
ランスを補正することも、可能となった。
Furthermore, the differential coil 14 makes it possible to adjust the vertical focus balance of the phosphor screen 6, thereby correcting the vertical imbalance of focus due to vertical asymmetric components due to manufacturing variations in monochrome cathode ray tube devices. It has also become possible.

尚、この発明のモノクローム陰極線管装置は、上記偏向
装置以外は従来例(第7図)と同様構成ゆえ、詳細な説
明は省略する。
The monochrome cathode ray tube device of the present invention has the same structure as the conventional example (FIG. 7) except for the above-mentioned deflection device, so a detailed explanation will be omitted.

[発明の効果] この発明によれば、モノクローム陰極線管、特に大形蛍
光体スクリーン、フラットスクリーン、−同角の大きい
モノクローム・デイスプレィ管において、超高精細フォ
ーカスレベルと、歪の少ないラスタスクリーンを得るこ
とが出来る。
[Effects of the Invention] According to the present invention, an ultra-high-definition focus level and a raster screen with little distortion can be obtained in a monochrome cathode ray tube, especially a large phosphor screen, a flat screen, and a large monochrome display tube with the same angle. I can do it.

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

第1図はこの発明の一実施例に係るモノクローム陰極線
管装置における偏向装置を示す回路構成図、第2図は第
1図の偏向装置で用いる補助コイルを示す斜視図、第3
図はこの発明における補助コイルにより形成されるバレ
ル磁界を示す正面図、第4図は第3図のバレル磁界によ
り影響を受ける電子ビームの形状を示す正面図、第5図
はこの発明における補助コイルの磁界分布を示す正面図
、第6図は強いピン磁界による上下ビン歪みの補正を示
す正面図、第7図は従来のモノクローム陰極線管装置を
示す概略断面図、第8図は従来のモノクローム陰極線管
装置におけるラスタ歪(ビンクツション歪)を示す正面
図、第9図は同じく偏向収差による電子ビームのスポッ
ト形状を示す正面図である。 1・・・モノクローム陰極線管、2・・・偏向装置、1
、 Oa 、 10 b−・・水平偏向コイル、11a
111b・・・補助コイル、12・・・可飽和リアクタ
FIG. 1 is a circuit configuration diagram showing a deflection device in a monochrome cathode ray tube device according to an embodiment of the present invention, FIG. 2 is a perspective view showing an auxiliary coil used in the deflection device of FIG. 1, and FIG.
Figure 4 is a front view showing the barrel magnetic field formed by the auxiliary coil in this invention, Figure 4 is a front view showing the shape of the electron beam affected by the barrel magnetic field in Figure 3, and Figure 5 is the auxiliary coil in this invention. Fig. 6 is a front view showing the correction of upper and lower bin distortion by a strong pin magnetic field, Fig. 7 is a schematic cross-sectional view showing a conventional monochrome cathode ray tube device, and Fig. 8 is a conventional monochrome cathode ray tube device. FIG. 9 is a front view showing raster distortion (binction distortion) in the tube device, and FIG. 9 is a front view showing the spot shape of the electron beam due to deflection aberration. 1... Monochrome cathode ray tube, 2... Deflection device, 1
, Oa, 10b--Horizontal deflection coil, 11a
111b...Auxiliary coil, 12...Saturable reactor.

Claims (1)

【特許請求の範囲】 電子銃を有する陰極線管と、この陰極線管に装着され一
対の水平偏向コイルと一対の垂直偏向コイルを有し、上
記電子銃から射出された電子ビームを電磁偏向する偏向
装置とを具備するモノクローム陰極線管装置において、 上記一対の水平偏向コイルにそれぞれ並列に一対の補助
コイルが接続され、更にこれら水平偏向コイル及び補助
コイルの一端に垂直偏向電流で制御される可飽和リアク
タが接続されてなることを特徴とするモノクローム陰極
線管装置。
[Scope of Claims] A deflection device that includes a cathode ray tube having an electron gun, a pair of horizontal deflection coils and a pair of vertical deflection coils attached to the cathode ray tube, and electromagnetically deflects an electron beam emitted from the electron gun. A monochrome cathode ray tube device comprising: a pair of auxiliary coils connected in parallel to the pair of horizontal deflection coils, and a saturable reactor controlled by a vertical deflection current at one end of the horizontal deflection coils and the auxiliary coil. A monochrome cathode ray tube device characterized by being connected.
JP1268690A 1990-01-24 1990-01-24 Monochrome cathode-ray tube device Pending JPH03219536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1268690A JPH03219536A (en) 1990-01-24 1990-01-24 Monochrome cathode-ray tube device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1268690A JPH03219536A (en) 1990-01-24 1990-01-24 Monochrome cathode-ray tube device

Publications (1)

Publication Number Publication Date
JPH03219536A true JPH03219536A (en) 1991-09-26

Family

ID=11812263

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1268690A Pending JPH03219536A (en) 1990-01-24 1990-01-24 Monochrome cathode-ray tube device

Country Status (1)

Country Link
JP (1) JPH03219536A (en)

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