JPH01225047A - Color picture tube device - Google Patents

Color picture tube device

Info

Publication number
JPH01225047A
JPH01225047A JP63049740A JP4974088A JPH01225047A JP H01225047 A JPH01225047 A JP H01225047A JP 63049740 A JP63049740 A JP 63049740A JP 4974088 A JP4974088 A JP 4974088A JP H01225047 A JPH01225047 A JP H01225047A
Authority
JP
Japan
Prior art keywords
color picture
picture tube
deflecting
eddy current
deflection yoke
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
JP63049740A
Other languages
Japanese (ja)
Other versions
JP2698594B2 (en
Inventor
Hiroyuki Koba
木場 弘幸
Juichi Okamoto
寿一 岡本
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 JP63049740A priority Critical patent/JP2698594B2/en
Priority to KR1019880017536A priority patent/KR910009637B1/en
Priority to CN88105842A priority patent/CN1013233B/en
Priority to US07/290,430 priority patent/US4975618A/en
Priority to EP88121688A priority patent/EP0322845A3/en
Publication of JPH01225047A publication Critical patent/JPH01225047A/en
Application granted granted Critical
Publication of JP2698594B2 publication Critical patent/JP2698594B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the mis-convergence locally generated on the upper end of a screen by the leakage magnetic field of the vertical deflecting coil of a deflecting yoke by arranging a nonmagnetic conducting plate-shaped member nearly perpendicularly to the tube axis of a color picture tube on the electron gun side of the deflecting yoke. CONSTITUTION:A nonmagnetic conducting plate-shaped member 31 is arranged nearly perpendicularly to the tube axis of a color picture tube on a deflecting yoke 30 deflecting the electron beams of the color picture tube having an electron gun emitting multiple electron beams parallel on the same plane. The leakage magnetic field of the vertical deflecting coil 15 of the deflecting yoke 30 penetrates the plate-shaped member 31 and generates the eddy current in this plate-shaped member 31. It also forms the diamagnetic field in the opposite direction to the diamagnetic field formed by the eddy current flowing through the metal cover 18 of a power source unit arranged near the deflecting yoke 30. This diamagnetic field offsets the effect applied to electron beams by the diamagnetic field formed by the eddy current flowing through the metal cover 18. The local mis-convergence generated on the upper end of a screen can be thereby corrected.

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、カラー受像管装置に係り、特に偏向ヨーク
の漏洩磁界によりインライン型カラー受像管の画面に生
ずるミス・]ンバーゼンスを補正するようにしたカラー
受像管装置に関する。
[Detailed Description of the Invention] [Object of the Invention] (Industrial Field of Application) The present invention relates to a color picture tube device, and particularly to the problem of misconvergence that occurs on the screen of an in-line color picture tube due to a leakage magnetic field of a deflection yoke. The present invention relates to a color picture tube device that corrects for.

(従来の技術) インライン型カラー受像管は、第4図に示すように、パ
ネル(1)およびファンネル(2)からなる外囲器(3
)を有し、そのパネル(1)の内側に配設された多数の
電子ビーム通過孔を有するシャドウマスク(4)に対向
して、パネル(1)内面に、赤、青、緑に発光する3色
蛍光体層からなるスクリーン(5)が形成されている。
(Prior Art) As shown in FIG. 4, an in-line color picture tube has an envelope (3) consisting of a panel (1) and a funnel (2).
), and emits red, blue, and green light on the inner surface of the panel (1) facing a shadow mask (4) having a large number of electron beam passing holes arranged inside the panel (1). A screen (5) consisting of three color phosphor layers is formed.

また、ファンネル(2)のネック(6)内に同一平面上
(一般的には水平面上)に並列するセンタービーム(7
G)および一対のサイドビーム(7B)、 (7R)か
らなる3電子ビームを放出する電子銃(8)が配設され
ている。そして、ファンネル(2)のネック(6)とコ
ーン部(9)との境界部外側に偏向ヨーク(10)を装
着して、この偏向ヨーク(10)により上記電子銃(8
)から放出される各電子ビームを水平および垂直方向に
偏向してスクリーン(5)を走査することにより、スク
リーン(5)上に所要の画像を表示する構造に形成され
ている。
In addition, center beams (7
An electron gun (8) is provided that emits three electron beams consisting of an electron beam (G) and a pair of side beams (7B) and (7R). Then, a deflection yoke (10) is attached to the outside of the boundary between the neck (6) and the cone part (9) of the funnel (2), and this deflection yoke (10) allows the electron gun (8) to
) is formed to display a desired image on the screen (5) by scanning the screen (5) by deflecting each electron beam in the horizontal and vertical directions.

一般に、上記インライン型カラー受像管の偏向ヨーク(
10)としては、第5図に示すように、セパレータ(1
2)の内側にサドル型の水平偏向コイル(13)を配置
し、その外側にセパして夕(12)を介してコア(14
)に巻装されたトロイダル型の垂直偏向コイル(15)
を配置したものが用いられている。
Generally, the deflection yoke (
10), as shown in FIG.
A saddle-shaped horizontal deflection coil (13) is placed inside the coil (13), and the core (14) is placed separately on the outside of the coil (13) through the coil (12).
) toroidal vertical deflection coil (15)
is used.

ところで、画面上に文字などを表示する最近の高解像度
デイスプレィ装置は、コンパクトなものが要求され、第
6図に示すように、カラー受像管(16)に装着された
偏向ヨーク(10)の近くに、電源ユニット(17)や
ビデオ・ユニットなどが配置されたものが多くなってい
る。このような電源ユニット(17)は、不要輻射を防
止するため、装置構造材としての機能を兼ねて、一般に
鋼板やアルミニウム板などからなる金属カバー(18)
で覆われている。
By the way, recent high-resolution display devices that display characters, etc. on the screen are required to be compact, and as shown in FIG. Increasingly, a power supply unit (17), video unit, etc. are installed. In order to prevent unnecessary radiation, such a power supply unit (17) is generally equipped with a metal cover (18) made of steel plate or aluminum plate, which also serves as a structural material for the device.
covered with.

そのため、上記のように偏向ヨーク(10)に接近して
電源ユニット(17)が配置されたカラー受像管装置で
は、偏向ヨーク(10)の漏洩磁界がこの金属カバー(
18)を貫通して金属カバー(18)に渦電流が発生し
、この渦電流により形成される磁界のために、画面上に
局部的なミス・コンバーゼンスを生ずるようになる。
Therefore, in a color picture tube device in which the power supply unit (17) is placed close to the deflection yoke (10) as described above, the leakage magnetic field of the deflection yoke (10) is caused by the metal cover (
Eddy currents are generated in the metal cover (18) through the metal cover (18), and the magnetic field formed by the eddy currents causes local misconvergence on the screen.

すなわち、偏向ヨーク(10)の垂直偏向コイル(15
)をコア(14)に巻装されたトロイダル型に構成する
と、その構造上、第7図に示すように、電子ビームの垂
直偏向に必要な磁界(20)以外に強い漏洩磁界(21
)を生ずる。そのため、近くに電源ユニットが存在する
と、その漏洩磁界(21)が電源ユニットの金属カバー
(18)を貫通するようになる。通常の場合、カラー受
像管の垂直偏向周波数は40〜100Hz程度と低いた
め、上記のように漏洩磁界(21)が金属カバー(18
)を貫通しても、渦電流を発生しないが、最近のカラー
・デイスプレィ装置のように垂直走査の帰線期間をきわ
めて短くしたものでは、その期間が10Kllz以上の
周波数に相当するものとなるため、その高い周波数によ
り金属カバー(18)に渦電流(22)が流れ、その渦
電流(22)により偏向磁界(20)とは逆向きの反磁
界(23)を形成する。
That is, the vertical deflection coil (15) of the deflection yoke (10)
) is formed into a toroidal shape wrapped around a core (14). Due to its structure, as shown in FIG. 7, a strong leakage magnetic field (21
). Therefore, if a power supply unit is present nearby, its leakage magnetic field (21) will penetrate the metal cover (18) of the power supply unit. Normally, the vertical deflection frequency of a color picture tube is as low as 40 to 100 Hz, so the leakage magnetic field (21) is caused by the metal cover (18) as described above.
), no eddy current will be generated even if it passes through the line. However, in recent color display devices where the vertical scanning retrace period is extremely short, this period corresponds to a frequency of 10 Kllz or more. Due to its high frequency, an eddy current (22) flows through the metal cover (18), and the eddy current (22) forms a demagnetizing field (23) in the opposite direction to the deflecting magnetic field (20).

一般に、コンパクトなデイスプレィ装置の電源ユニット
(17)は、カラー受像管(16)に装着された偏向ヨ
ーク(10)に対して、その側方かつ電子銃側のやや後
退した位置に配置されるため、上記反磁界(23)は、
偏向ヨーク(10)のネック部分に影響を与え、特に一
対のサイドビーム(7B)、 (7R)のうち、電源ユ
ニット(17)側を通る一方のサイドビーム(7R)に
対して偏向を増大させる作用を及ぼす。そのため、第8
図に示すように、上記一方のサイドビーム(7R)のラ
スクー(24R)は、画面(25)の上端部で他のサイ
ドビーム(7B)のラスター(24R)に対してずれ、
余分に偏向されたかの如きミス・コンバーゼンスを生ず
る。このミス・コンバーゼンスは、垂直走査の帰線期間
の影響を受ける画面(25)の上端部にのみ局部的に発
生するものであり、通常5mm程度の幅であり、たとえ
ば14インチ90度偏向デイスプレィ管で0.1〜0.
3mmの、幅で現れる。
In general, the power supply unit (17) of a compact display device is placed at a position to the side of the deflection yoke (10) attached to the color picture tube (16) and at a position slightly set back from the electron gun side. , the demagnetizing field (23) is
It affects the neck part of the deflection yoke (10) and increases the deflection, especially for one side beam (7R) of the pair of side beams (7B) and (7R) that passes through the power supply unit (17) side. exert an effect. Therefore, the 8th
As shown in the figure, the raster (24R) of one of the side beams (7R) is shifted from the raster (24R) of the other side beam (7B) at the upper end of the screen (25),
Misconvergence occurs as if the beam was excessively deflected. This misconvergence occurs locally only at the upper edge of the screen (25), which is affected by the retrace period of vertical scanning, and is usually about 5 mm wide, for example, on a 14-inch 90-degree deflection display tube. 0.1~0.
Appears in a width of 3mm.

このミス・コンバーゼンスは、局部的なものであるため
、補正がむつかしく、特にミス・コンバーゼンスとして
0.3〜0.4mm以下が要求される高解像度デイスプ
レィ用カラー受像管にとって重要な問題である。
Since this misconvergence is local, it is difficult to correct it, and it is a particularly important problem for color picture tubes for high-resolution displays, which require a misconvergence of 0.3 to 0.4 mm or less.

(発明が解決しようとする課題) 上記のようにコンパクト構造の高解像度カラー・デイス
プレィ装置では、カラー受像管に装着された偏向ヨーク
の電子銃側の近くに電源ユニットが配置されるため、偏
向ヨークの垂直偏向コイルの漏洩磁界が電源ユニットの
金属カバーを貫通して、この金属カバーに渦電流を発生
させ、その□渦電流により形成される磁界のために画面
上端部に局部的なミス・コンバーゼンスを生じ、画面品
位を劣化させるという問題がある。
(Problems to be Solved by the Invention) In the high-resolution color display device with a compact structure as described above, the power supply unit is placed near the electron gun side of the deflection yoke attached to the color picture tube. The leakage magnetic field of the vertical deflection coil penetrates the metal cover of the power supply unit and generates an eddy current in the metal cover, causing local misconvergence at the top edge of the screen due to the magnetic field formed by the eddy current. There is a problem in that this causes the screen quality to deteriorate.

この発明は、上記問題点を解決するためになされたもの
でめり、偏向ヨークの垂直偏向コイルの漏洩磁界により
画面上端部に局部的に生ずるミス・コンバーゼンスを軽
減するカラー受像管装置を構成することを目的とする。
The present invention was made to solve the above problems, and provides a color picture tube device that reduces misconvergence that occurs locally at the upper end of the screen due to the leakage magnetic field of the vertical deflection coil of the deflection yoke. The purpose is to

[発明の構成] (課題を解決する□ための手段) 同一平面上に並列する複数の電子ビームを放出する電子
銃を有するカラー受像管と、上記電子銃から放出された
電子ビームを偏向する水平および垂直偏向コイルを有す
る偏向ヨークとを備えるカラー受像管装置において、上
記偏向ヨークの電子銃側にカラー受像管の管軸に対して
略直角に非磁性にしてかつ導電性の板状部材を配置した
[Structure of the invention] (Means for solving the problem) A color picture tube having an electron gun that emits a plurality of parallel electron beams on the same plane, and a horizontal tube that deflects the electron beams emitted from the electron gun. and a deflection yoke having a vertical deflection coil, in which a non-magnetic and conductive plate-like member is arranged approximately perpendicular to the tube axis of the color picture tube on the electron gun side of the deflection yoke. did.

(作 用) 上記のように偏向ヨークの電子銃側にカラー受像管の管
軸に対して略直角に非磁性かつ導電性の板状部材を配置
すると、偏向ヨークの垂直偏向コイルの漏洩磁界が上記
板状部材を貫通してこの板状部材に渦電流が流れ、偏向
ヨークの近くに配置された電源ユニットの金属カバーに
流れる渦電流により発生する反磁界とは逆方向の反磁界
(垂直偏向コイルの偏向磁界と同方向)を形成し、この
反磁界が金属カバーに流れる渦電流により形成される反
磁界か電子ビームに与える影響を相殺して、従来画面上
端部に生じた局部的なミス・コンバーゼンスを補正する
ことができる。
(Function) If a non-magnetic and conductive plate member is placed on the electron gun side of the deflection yoke at a substantially right angle to the tube axis of the color picture tube as described above, the leakage magnetic field of the vertical deflection coil of the deflection yoke will be reduced. An eddy current flows through this plate-like member through the above-mentioned plate-like member, and a demagnetizing field (vertical deflection This demagnetizing field cancels out the demagnetizing field formed by the eddy current flowing through the metal cover (in the same direction as the deflection magnetic field of the coil), and cancels out the effect on the electron beam, thereby eliminating the localized errors that conventionally occur at the top of the screen.・Convergence can be corrected.

(実施例) 以下、図面を参照してこの発明を実施例に基づいて説明
する。
(Example) Hereinafter, the present invention will be described based on an example with reference to the drawings.

第1図および第2図にこの発明の一実施例であるカラー
・デイスプレィ装置の要部構成を示す。
FIGS. 1 and 2 show the main structure of a color display device which is an embodiment of the present invention.

特に第1図においては、カラー受像管を省略し、それに
装着される偏向ヨークと電源ユニットとの関係位置を示
しである。
Particularly, in FIG. 1, the color picture tube is omitted, and the relative position of the deflection yoke attached thereto and the power supply unit is shown.

この例のデイスプレィ装置に用いられるカラー受像管(
16)は、同一平面上に並列するセンタービームおよび
一対のサイドビームからなる3電子ビームを放出するも
のであり、その構成は、前記従来のインライン型カラー
受像管と同じであるので、その説明を省略する。
The color picture tube (
16) emits three electron beams consisting of a center beam and a pair of side beams arranged in parallel on the same plane, and its configuration is the same as that of the conventional in-line color picture tube, so its explanation will be omitted here. Omitted.

このカラー受像管(16)に装着される偏向ヨーク(3
0)は、絶縁樹脂からなる戴頭円錐状のセパレータ(1
2)の内側にサドル型の水平偏向コイル(13)が配置
され、その外側にセパレータ(12)を介してコア(1
4)に巻装されたトロイダル型の垂直偏向コイル(15
)が配置されたサドル−1〜ロイダル型であり、カラー
受像管(16)のネック(6)とコーン部(9)との境
界部外側に装着される。デイスプレィ装置は、この偏向
ヨーク(30)をカラー受像管(16)に装着して組込
んだとき、その偏向ヨーク(30)に対してカラー受像
管電子銃側に接近してその側方に電源ユニット(17)
が配置され、その外側は、たとえば厚さ1.0mm 、
大きさ約30mmX 30mmのアルミニウム板からな
る金属カバー(18)で覆われている。
Deflection yoke (3) attached to this color picture tube (16)
0) is a truncated conical separator (1) made of insulating resin.
A saddle-shaped horizontal deflection coil (13) is placed inside the core (13), and a core (1
A toroidal vertical deflection coil (15
) is of a saddle-1 to loidal type, and is attached to the outside of the boundary between the neck (6) and the cone (9) of the color picture tube (16). When the display device is assembled with the deflection yoke (30) attached to the color picture tube (16), the display device approaches the color picture tube electron gun side with respect to the deflection yoke (30) and connects the power source to the side thereof. Unit (17)
is arranged, and its outer side has a thickness of, for example, 1.0 mm,
It is covered with a metal cover (18) made of an aluminum plate with a size of about 30 mm x 30 mm.

そして、この例のデイスプレィ装置では、上記偏向ヨー
ク(30)の電子銃側の電源ユニット(17)に対応す
る位置にカラー受像管(16)の管軸(Z軸)に対して
直角にアルミニウム板などの非磁性にしてかつ良導電性
の板状部材(31)が装着されている。
In the display device of this example, an aluminum plate is installed at right angles to the tube axis (Z-axis) of the color picture tube (16) at a position corresponding to the power supply unit (17) on the electron gun side of the deflection yoke (30). A non-magnetic and highly conductive plate member (31) such as the like is attached.

ところで、上記偏向ヨーク(30)を動作させると、偏
向ヨーク(30)の垂直偏向コイル(15)からは、前
記従来技術で述べた水平方向(X軸方向)の漏洩磁界ば
かりでなく、カラー受像管(16)の管軸方向の漏洩磁
界(33)も形成され、その管軸方向の漏洩磁界(33
)が上記板状部材(31)を貫通して、板状部材(31
)に渦電流(34)を発生させる。そして、この渦電流
(34)により反磁界(35)を形成されるが、この反
磁界(35)は、上記水平方向の漏洩磁界により電源ユ
ニットの金属カバー(18)を流れる渦電流(22)に
より形成される反磁界(23)と逆向きの方向となる。
By the way, when the deflection yoke (30) is operated, the vertical deflection coil (15) of the deflection yoke (30) produces not only a leakage magnetic field in the horizontal direction (X-axis direction) as described in the prior art, but also a color image. A leakage magnetic field (33) in the tube axis direction of the tube (16) is also formed, and the leakage magnetic field (33) in the tube axis direction is also formed.
) penetrates the plate-like member (31) to form the plate-like member (31).
) to generate an eddy current (34). A demagnetizing field (35) is formed by this eddy current (34), and this demagnetizing field (35) is caused by the eddy current (22) flowing through the metal cover (18) of the power supply unit due to the horizontal leakage magnetic field. The direction is opposite to the demagnetizing field (23) formed by the demagnetizing field (23).

したかって、板状部材(31)の装着によって得られる
反磁界(35)は、カラー受像管(16)の電子銃から
放出される一対のサイトビームのうち、電源ユニット側
を通る一方のサイトビームの偏向を増大さぜる反磁界(
23)の影響を相殺する作用をし、従来画面上端部に局
部的に生じたミス・]ンバーゼンスを補正する。
Therefore, the demagnetizing field (35) obtained by attaching the plate member (31) is applied to one of the pair of sight beams emitted from the electron gun of the color picture tube (16), which passes through the power supply unit side. demagnetizing field (
23), and corrects the misconvergence that conventionally occurs locally at the top of the screen.

その補正量は、板状部材(31)の大きさ、偏向ヨーク
(30)に対する装着位置く管軸との距離)などにより
容易に調整することができ、従来板状部材(31)を装
着しない場合にたとえば画面上端部に0、2mm生じた
ミス・コンバーゼンスを略零にすることができた。
The amount of correction can be easily adjusted depending on the size of the plate member (31), the mounting position relative to the deflection yoke (30), the distance from the tube axis, etc., and conventionally the plate member (31) is not attached. For example, the misconvergence that occurs by 0.2 mm at the top edge of the screen can be reduced to approximately zero.

なあ、板状部材(31)は、アルミニウム板に限らず、
ステンレス鋼板など他の非磁性かつ良導電性の金属板で
もよく、その厚さは、あまり薄いと、渦電流(34)が
流れにくくなるので、0.3mm以上を必要とし、好ま
しくは0.3〜0.5mmか適切である。
By the way, the plate member (31) is not limited to an aluminum plate.
Other non-magnetic and highly conductive metal plates such as stainless steel plates may be used, and if the thickness is too thin, the eddy current (34) will hardly flow, so the thickness should be 0.3 mm or more, preferably 0.3 mm. ~0.5mm is appropriate.

なおまた、磁性金属板は、電子ビームの偏向に必要な磁
界に大ぎく影響し、画面全体のコンバーゼンスを変化さ
せるので好ましくない。
Furthermore, a magnetic metal plate is not preferable because it greatly affects the magnetic field necessary for deflecting the electron beam and changes the convergence of the entire screen.

つぎに他の実施例について説明する。Next, other embodiments will be described.

第3図は非磁性かつ良導電性の板状部材(31)をカラ
ー受像管の管軸に沿って2枚装着した例である。このよ
うに管軸に沿って複数枚多段配置すると、1枚の板状部
材(31)の大ぎざがスペースの都合上制限されるとき
など、各板状部材(31)の大きさ小さくして補正量を
増加させることができる。
FIG. 3 shows an example in which two nonmagnetic and highly conductive plate members (31) are attached along the tube axis of a color picture tube. By arranging a plurality of plates in multiple stages along the tube axis in this way, the size of each plate member (31) can be reduced when the large serrations of one plate member (31) are limited due to space constraints. The amount of correction can be increased.

また、前記各実施例では、カラー受像管に対して、その
スクリーン側からみて、右側に電源ユニットが配置され
ているために、偏向ヨークのも側に板状部材を装着した
が、電源ユニットが偏向ヨークの左側にある場合は、そ
の左側に装着することはいうまでもない。
Furthermore, in each of the above embodiments, since the power supply unit is placed on the right side of the color picture tube when viewed from the screen side, a plate-like member is attached to the deflection yoke, but the power supply unit is If it is on the left side of the deflection yoke, it goes without saying that it should be attached to that left side.

さらに、前記各実施例は、特に漏洩磁界の大きいトロイ
ダル型垂直偏向コイルからなる偏向ヨークについて述べ
たが、この発明は、サドル型垂直偏向コイルを有する偏
向ヨークについても適用てぎることはいうまでもない。
Furthermore, although each of the above embodiments describes a deflection yoke made of a toroidal vertical deflection coil having a particularly large leakage magnetic field, it goes without saying that the present invention is also applicable to a deflection yoke having a saddle type vertical deflection coil. do not have.

[発明の効果] 同一平面上に並列する複数の電子ビームを放出する電子
銃を有するカラー受像管の電子ビームを偏向する偏向ヨ
ークにカラー受像管の管軸に対して略直角に非磁性にし
てかつ導電性の板状部材を配置すると、偏向ヨークの垂
直偏向6イルの漏洩磁界か上記板状部材を貫通してこの
板状部材に渦電流を発生させ、偏向ヨークの近くに配置
された電源ユニットの金属カバーに流れる渦電流により
形成される反磁界とは逆方向の反磁界を形成して、この
反磁界が金属カバーに流れる渦電流により形成される反
磁界が電子ビームに与える影響を相殺して、従来画面上
端部に生じた局部的なミス・5ンバーゼンスを補正する
ことができる。
[Effects of the Invention] A deflection yoke for deflecting an electron beam of a color picture tube having an electron gun that emits a plurality of parallel electron beams on the same plane is made of non-magnetic material approximately perpendicular to the tube axis of the color picture tube. When a conductive plate-like member is arranged, the leakage magnetic field of the vertical deflection of the deflection yoke penetrates the plate-like member and generates an eddy current in this plate-like member, which causes a power supply placed near the deflection yoke to Forms a demagnetizing field in the opposite direction to the demagnetizing field formed by the eddy current flowing through the metal cover of the unit, and this demagnetizing field cancels out the effect on the electron beam of the demagnetizing field formed by the eddy current flowing through the metal cover. As a result, it is possible to correct the local misconvergence that conventionally occurs at the upper end of the screen.

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

第1図ないし第3図はこの発明の詳細な説明図で、第1
図はその一実施例カラー受像管装置の要部構成を示す斜
視図、第2図は同じくその平面図、= 12− 第3図は他の実施例の要部構成を示す斜視図、第4図は
カラー受像管の構成を示す断面図、第5図はカラー受像
管に装着される偏向ヨークの斜視図、第6図はカラー受
像管装置におけるカラー受像管と電源ユニットとの位置
関係を示す斜視図、第7図(A) Iよび(B)図はそ
れぞれカラー受像管に装着された偏向ヨークの漏洩磁界
の影響を説明するための図、第8図は偏向ヨークの漏洩
磁界により生ずるミス・コンバーゼンスの説明図である
。 13・・・水平偏向コイル 15・・・垂直偏向コイル 16・・・カラー受像管 30・・・偏向ヨーク 31・・・板状部材
Figures 1 to 3 are detailed explanatory diagrams of this invention.
The figure is a perspective view showing the main part of a color picture tube device according to one embodiment, FIG. 2 is a plan view thereof, =12-FIG. The figure is a sectional view showing the configuration of a color picture tube, Figure 5 is a perspective view of a deflection yoke attached to the color picture tube, and Figure 6 is a diagram showing the positional relationship between the color picture tube and the power supply unit in the color picture tube device. Perspective views, Figures 7 (A) I and (B) are diagrams for explaining the influence of the leakage magnetic field of the deflection yoke attached to the color picture tube, respectively, and Figure 8 shows the error caused by the leakage magnetic field of the deflection yoke. - It is an explanatory diagram of convergence. 13...Horizontal deflection coil 15...Vertical deflection coil 16...Color picture tube 30...Deflection yoke 31...Plate member

Claims (1)

【特許請求の範囲】 同一平面上に並列する複数電子ビームを放出する電子銃
を有するカラー受像管と、上記電子銃から放出された電
子ビームを偏向する水平および垂直偏向コイルを有する
偏向ヨークとを備えるカラー受像管装置において、 上記偏向ヨークの電子銃側にカラー受像管の管軸に対し
て略直角に非磁性にしてかつ導電性の板状部材を配置し
たことを特徴とするカラー受像管装置。
[Claims] A color picture tube having an electron gun that emits a plurality of parallel electron beams on the same plane, and a deflection yoke having horizontal and vertical deflection coils that deflect the electron beams emitted from the electron gun. A color picture tube device comprising: a non-magnetic and electrically conductive plate-like member disposed on the electron gun side of the deflection yoke substantially perpendicularly to the tube axis of the color picture tube. .
JP63049740A 1987-12-26 1988-03-04 Color picture tube equipment Expired - Fee Related JP2698594B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP63049740A JP2698594B2 (en) 1988-03-04 1988-03-04 Color picture tube equipment
KR1019880017536A KR910009637B1 (en) 1987-12-26 1988-12-26 Color cathode lay tube device
CN88105842A CN1013233B (en) 1987-12-26 1988-12-26 Colour display tube device
US07/290,430 US4975618A (en) 1987-12-26 1988-12-27 Deflection device for a color picture tube apparatus
EP88121688A EP0322845A3 (en) 1987-12-26 1988-12-27 Improved deflection device for a color picture tube apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63049740A JP2698594B2 (en) 1988-03-04 1988-03-04 Color picture tube equipment

Publications (2)

Publication Number Publication Date
JPH01225047A true JPH01225047A (en) 1989-09-07
JP2698594B2 JP2698594B2 (en) 1998-01-19

Family

ID=12839584

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63049740A Expired - Fee Related JP2698594B2 (en) 1987-12-26 1988-03-04 Color picture tube equipment

Country Status (1)

Country Link
JP (1) JP2698594B2 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61101945U (en) * 1984-12-10 1986-06-28

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61101945U (en) * 1984-12-10 1986-06-28

Also Published As

Publication number Publication date
JP2698594B2 (en) 1998-01-19

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