JPH03120987A - Color picture tube device - Google Patents
Color picture tube deviceInfo
- Publication number
- JPH03120987A JPH03120987A JP25924289A JP25924289A JPH03120987A JP H03120987 A JPH03120987 A JP H03120987A JP 25924289 A JP25924289 A JP 25924289A JP 25924289 A JP25924289 A JP 25924289A JP H03120987 A JPH03120987 A JP H03120987A
- Authority
- JP
- Japan
- Prior art keywords
- pole
- magnetic
- correction
- magnetic field
- dynamic convergence
- 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
Links
- 230000005291 magnetic effect Effects 0.000 claims abstract description 56
- 238000010894 electron beam technology Methods 0.000 claims abstract description 21
- 239000011521 glass Substances 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000003359 percent control normalization Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
- H01J29/707—Arrangements intimately associated with parts of the gun and co-operating with external magnetic excitation devices
Landscapes
- Video Image Reproduction Devices For Color Tv Systems (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、インライン型電子銃を備えたカラー受像管に
、ほぼ斉一の偏向磁界を発生する偏向ヨークを装着し、
それによる３電子ビームの集中誤差をダイナミック・コ
ンバーゼンス手段により補正せしめるカラー受像管装置
に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a color picture tube equipped with an in-line electron gun, which is equipped with a deflection yoke that generates a nearly uniform deflection magnetic field.
The present invention relates to a color picture tube device in which the resulting concentration error of three electron beams is corrected by dynamic convergence means.
従来の技術
一般に、インライン型電子銃を備えたカラー受像管に装
着される偏向ヨークは、ビンクツション状に歪んだ水平
偏向磁界およびバレル状に歪んだ垂直偏向磁界を発生す
る。このため、ダイナミック・コンバーゼンス手段によ
る補正を必要とせず、コンバーゼンス調整系の構成およ
び操作を簡素化できた。しかし、かかる非斉一偏向磁界
はビームスポットに偏向歪みを与えるので、再生画像の
とくに周辺部で高い解像度を得ることができない。2. Description of the Related Art In general, a deflection yoke attached to a color picture tube equipped with an in-line electron gun generates a horizontal deflection magnetic field that is distorted in a bink-like manner and a vertical deflection magnetic field that is distorted in a barrel-like manner. Therefore, there is no need for correction by the dynamic convergence means, and the configuration and operation of the convergence adjustment system can be simplified. However, such a non-uniform deflection magnetic field imparts deflection distortion to the beam spot, making it impossible to obtain high resolution, particularly in the peripheral portions of the reproduced image.
そこで、インライン型電子銃を備えたカラー受像管に対
してもデルタ型電子銃を備えたカラー受像管に対すると
同様に、ほぼ斉一の偏向磁界を発生する偏向ヨークを装
着せしめ、それによる３電子ビームの集中誤差をダイナ
ミック・コンバーゼンス手段で補正せしめることが行わ
れている。Therefore, a color picture tube equipped with an in-line type electron gun is equipped with a deflection yoke that generates a nearly uniform deflection magnetic field, as is the case with a color picture tube equipped with a delta type electron gun. Dynamic convergence means is used to correct the concentration error.
特開昭６４−６２９９３号公報に開示されているカラー
受像管装置では、第５図に示すようにインライン型電子
銃の最終加速電極たる陽極の先端部にコンバーゼンス・
ユニット１を設ける一方、１対の相対向する磁界発生器
２，３を受像管ガラス外囲器のネック部４の外周面上に
設けている。In the color picture tube device disclosed in Japanese Patent Application Laid-open No. 64-62993, as shown in FIG.
While the unit 1 is provided, a pair of opposing magnetic field generators 2 and 3 are provided on the outer peripheral surface of the neck portion 4 of the picture tube glass envelope.
コンバーゼンス・ユニット１は非磁性金属からなるカッ
プ体内に、両サイドの電子ビーム通路５゜６をそれぞれ
垂直方向に挟む２対の磁性体製ポールピース７ａ、７ｂ
、８ａ、８ｂと、センターの電子ビーム通路９を水平方
向に挟む１対の磁気シールド板９ａ、９ｂとを備えてい
る。また、２対の磁界発生器２，３はＵ字状のコアー２
ａ、３ａと、これに巻装されたコイル２ｂ、３ｂとをそ
れぞれ有し、一方のＵ字状コアー２ａの両脚部が１対の
ポールピース７ａ、７ｂの各外縁部に、そして、他方の
Ｕ字状コアー３ａの両脚部が１対のポールピース８ ａ
ｒ ８ ｂの各外縁部にそれぞれ磁気的に結合すべく
対向配置されている。The convergence unit 1 includes two pairs of magnetic pole pieces 7a and 7b that vertically sandwich electron beam passages 5.6 on both sides within a cup body made of non-magnetic metal.
, 8a, 8b, and a pair of magnetic shield plates 9a, 9b that sandwich the center electron beam path 9 in the horizontal direction. In addition, the two pairs of magnetic field generators 2 and 3 are connected to a U-shaped core 2.
a, 3a, and coils 2b, 3b wound around these, both legs of one U-shaped core 2a are attached to each outer edge of a pair of pole pieces 7a, 7b, and Both legs of the U-shaped core 3a are a pair of pole pieces 8a
They are arranged to face each other so as to be magnetically coupled to each outer edge of r 8 b.
このような構成によるダイナミック・コンバーゼンス補
正は、ビーム偏向量の増大に伴い増大するパラボラ波ま
たはこれに似た山形波のダイナミック電流をコイル２ｂ
、３ｂに流すことにより達成されるのであり、両サイド
の電子ビームはＵ字状コアー２ａ、３ａの両脚部から当
該ポールピース間に供給された２極磁界により、矢印１
０ａ。Dynamic convergence correction with such a configuration uses a dynamic current of a parabolic wave or a similar chevron wave that increases as the amount of beam deflection increases to the coil 2b.
, 3b, and the electron beams on both sides are caused by the dipole magnetic field supplied between the pole pieces from both legs of the U-shaped cores 2a and 3a, and the electron beams are directed in the direction indicated by the arrow 1.
0a.
１０ｂで示す相反方向への偏向力を受ける。It receives deflection forces in opposite directions indicated by 10b.
発明が解決しようとする課題
このようなダイナミック・コンバーゼンス補正では、そ
れによるビーム形状の歪みが少な（、シかも補正磁界は
２対のポールピースによって強められるので、感度よく
コンバーゼンス補正ができる。しかし、水平方向のみの
ダイナミック・コンバーゼンス補正にとどまり、垂直方
向のダイナミック・コンバーゼンス補正を併せ行うこと
ができなかった。Problems to be Solved by the Invention In this type of dynamic convergence correction, the distortion of the beam shape due to it is small (although the correction magnetic field is strengthened by the two pairs of pole pieces, so convergence correction can be performed with high sensitivity. The dynamic convergence correction is limited to only the horizontal direction, and it is not possible to perform dynamic convergence correction in the vertical direction as well.
課題を解決するための手段
本発明は、インライン型電子銃を備えたカラー受像管に
、ほぼ斉一の偏向磁界を発生する偏向ヨークを装着し、
３電子ビームの集中誤差をダイナミック・コンバーゼン
ス手段により補正せしめるカラー受像管装置において、
前記電子銃を構成する集束電極を、垂直方向径よりも大
きい水平方向径を有する筒状体で形成する。そして、セ
ンターの電子ビーム通路を包囲する四角筒状磁性体の第
１のポールピースと、このポールピースの両側面にサイ
ドの電子ビーム通路を介して内側面が向き合う第２およ
び第３のポールピースとを前記筒状体内に設ける一方、
前記カラー受像管のガラス外囲器のネック部外周面上に
設ける磁界発生器を、前記ネック部を包囲する円環状の
コアーと、このコアーの４つの磁極部に巻装されたコイ
ルとで構成し、４つの前記磁極部を前記第１のポールピ
ースの上下面ならびに前記第２および第３のポールピー
スの各外側面にそれぞれ向き合わせる。Means for Solving the Problems The present invention provides a color picture tube equipped with an in-line electron gun, equipped with a deflection yoke that generates an almost uniform deflection magnetic field,
3. In a color picture tube device that corrects concentration errors of electron beams by dynamic convergence means,
A focusing electrode constituting the electron gun is formed of a cylindrical body having a horizontal diameter larger than a vertical diameter. A first pole piece made of a rectangular cylindrical magnetic material surrounding a center electron beam passage, and second and third pole pieces whose inner surfaces face each other on both sides of this pole piece through side electron beam passages. is provided in the cylindrical body,
A magnetic field generator provided on the outer peripheral surface of the neck portion of the glass envelope of the color picture tube is composed of an annular core surrounding the neck portion and a coil wound around four magnetic pole portions of this core. Then, the four magnetic pole parts face the upper and lower surfaces of the first pole piece and the outer surfaces of the second and third pole pieces, respectively.
作用
このように構成すると、磁界発生器を構成する円環状コ
アーの４つの磁極部に磁気的に結合された第１、第２お
よび第３のポールピースによる４極補正用磁界や２極補
正用磁界を、両サイドの電子ビームを垂直方向へ移動さ
せるための補正磁界として集束電極内で発生せしめ得る
ので、在来の水平方向ダイナミック・コンバーゼンス補
正のほかに垂直方向のダイナミック・コンバーゼンス補
正を併せ行わしめることが可能となる。Effect: With this configuration, the first, second, and third pole pieces magnetically coupled to the four magnetic pole parts of the annular core constituting the magnetic field generator generate a magnetic field for quadrupole correction or a two-pole correction magnetic field. A magnetic field can be generated in the focusing electrode as a correction magnetic field to move the electron beams on both sides vertically, so that vertical dynamic convergence correction can be performed in addition to conventional horizontal dynamic convergence correction. It becomes possible to tighten.
実施例
つぎに、本発明を図面に示した実施例とともに説明する
。Embodiments Next, the present invention will be explained along with embodiments shown in the drawings.
第１図に示すように、カラー受像管のガラス外囲器のネ
ック部４に内蔵されているインライン型電子銃１１は、
水平−直線上にインライン配列された３個の陰極１２ａ
、１２ｂ、１２ｃ％制御格子電極１３、加速電極１４、
集束電極１５および最終加速電極としての陽極１６から
なる。集束電極１５および陽極１６はいずれも水平方向
径が垂直方向径よりも大きい横長の金属筒体からなり、
陽極１６の先端部には第５図に示すと同様のコンバーゼ
ンス・ユニット１が設けられている。そして、コンバー
ゼンス・ユニット１の２対のポールピース７ａ、７ｂ、
８ａ、８ｂに磁気的に結合するＵ字状コアーおよびその
両脚部に巻装されたコイルからなる２対の磁界発生器２
，３が、ネック部４の外周面上に相対向するように配置
されている。As shown in FIG. 1, an in-line electron gun 11 built into the neck portion 4 of the glass envelope of the color picture tube is
Horizontal - three cathodes 12a arranged inline on a straight line
, 12b, 12c% control grid electrode 13, acceleration electrode 14,
It consists of a focusing electrode 15 and an anode 16 as a final acceleration electrode. Both the focusing electrode 15 and the anode 16 are made of horizontally elongated metal cylinders whose horizontal diameter is larger than their vertical diameter;
A convergence unit 1 similar to that shown in FIG. 5 is provided at the tip of the anode 16. Then, the two pairs of pole pieces 7a, 7b of the convergence unit 1,
Two pairs of magnetic field generators 2 consisting of a U-shaped core magnetically coupled to 8a and 8b and coils wound around both legs of the U-shaped core.
, 3 are arranged on the outer peripheral surface of the neck portion 4 so as to face each other.
第２図に示すように、非磁性金属からなる集束電極１５
内の中間領域には四角筒状磁性体の第１のポールピース
１７が、センターの電子ビーム通路１８を包囲するよう
に配設されており、このポールピース１７の両側部にサ
イドの電子ビーム通路１９．２０を介して内側面が向き
合う半円筒状の第２および第３のポールピース２１．２
２が、ポールピース１７の両側方に設けられている。As shown in FIG. 2, a focusing electrode 15 made of non-magnetic metal
A first pole piece 17 made of a rectangular cylindrical magnetic material is disposed in the middle region of the interior so as to surround a center electron beam passage 18, and side electron beam passages are arranged on both sides of this pole piece 17. Semi-cylindrical second and third pole pieces 21.2 whose inner surfaces face each other via 19.20
2 are provided on both sides of the pole piece 17.
第３図に示すように、ネック部４の外周面上に設けられ
た磁界発生器２３は、ネック部４を包囲する４極構成の
フェライト製円環状のコアー２４と、コアー２４の上下
左右４つの磁極部２４ａ。As shown in FIG. 3, the magnetic field generator 23 provided on the outer circumferential surface of the neck portion 4 includes a ferrite annular core 24 having a four-pole configuration surrounding the neck portion 4, and a four-pole ring-shaped core 24 surrounding the neck portion 4. one magnetic pole part 24a.
２４ｂ、２４ｃ、２４ｄに巻装された４個のコイル２５
ａ、２５ｂ、２５ｃ、２５ｄと、左右２つの磁極部２４
ｃ、２４ｄに巻装された２個のコイル２５ｅ、２５ｆと
からなり、上下に位置する磁極部２４ａ、２４ｂは第１
のポールピース１７の上下面と、そして、左右に位置す
る磁極部２４Ｃ２２４ｄは第２お、よび第３のポールピ
ース２１，２２の各外側面と、それぞれ磁気的に結合す
べ（向き合っている。１対の磁界発生器２，３のセンタ
ー位置と、磁界発生器２３のセンター位置との間隔りは
、それぞれの磁界のクロストークを避けるためにネック
部４の内径Ｄ（７）０．５倍以上に設定される。Four coils 25 wound around 24b, 24c, and 24d
a, 25b, 25c, 25d, and the two left and right magnetic pole parts 24
It consists of two coils 25e and 25f wound around coils 25e and 24d, and the magnetic pole parts 24a and 24b located above and below are the first
The upper and lower surfaces of the pole piece 17 and the magnetic pole portions 24C and 224d located on the left and right are magnetically coupled (facing each other) with the outer surfaces of the second and third pole pieces 21 and 22, respectively. The distance between the center position of the pair of magnetic field generators 2 and 3 and the center position of the magnetic field generator 23 is set to be at least 0.5 times the inner diameter D(7) of the neck portion 4 to avoid crosstalk between the respective magnetic fields. is set to
かかる装置において４極補正を行わしめる場合、第３図
に示すように上下の磁極部２４ａ、２４ｂがＳ極に、左
右の磁極部２４ｃ、２４ｄがＮ極になるようにコイル２
５ａ〜２５ｄにダイナミック・コンバーゼンス用電流を
流す。これにより、破線矢印で示す磁界が集束電極１５
内に発生し、両サイドの電子ビームは太矢印で示すよう
に相反する垂直方向への力を受は移動する。一方、セン
ターの電子ビームはポールピース１７による磁気シール
ド作用を受けて、前記磁界の影響は受けない。When performing four-pole correction in such an apparatus, as shown in FIG. 3, the coil 2 is adjusted so that the upper and lower magnetic pole parts 24a and 24b are S poles, and the left and right magnetic pole parts 24c and 24d are N poles.
A dynamic convergence current is applied to 5a to 25d. As a result, the magnetic field indicated by the broken line arrow is applied to the focusing electrode 15.
The electron beams on both sides are moved by opposite forces in the vertical direction, as shown by the thick arrows. On the other hand, the center electron beam is magnetically shielded by the pole piece 17 and is not affected by the magnetic field.
２極補正を行わしめる場合は、第４図に示すように左右
の磁極部２４ｃ、２４ｄの一方がＮ極に、他方がＳ極に
なるように各コイル２５ｅ、２５ｆにダイナミック電流
を流すことによって、破線矢印で示す磁界を集束電極１
５内に発生せしめるのであり、両サイドの電子ビームは
ともに太矢印で示すように下方へまたは上方への力を受
ける。When performing two-pole correction, as shown in FIG. 4, by passing a dynamic current through each coil 25e, 25f so that one of the left and right magnetic pole parts 24c, 24d becomes the north pole and the other becomes the south pole. , the magnetic field indicated by the dashed arrow is focused by the focusing electrode 1
5, and both electron beams on both sides receive downward or upward force as shown by thick arrows.
このような垂直方向ダイナミック・コンバーゼンス補正
は、コンバーゼンス・ユニット１による在来の水平方向
ダイナミック・コンバーゼンス補正に支障を与えること
なく達成でき、電子銃の全長が長大となることもな（、
画面の全域において良好な解像度を得ることができる。Such vertical dynamic convergence correction can be achieved without interfering with the conventional horizontal dynamic convergence correction by the convergence unit 1, and without increasing the overall length of the electron gun (
Good resolution can be obtained over the entire screen.
発明の効果
以上のように本発明によると、両サイドの電子ビームを
水平方向のみならず垂直方向へも移動させるダイナミッ
ク・コンバーゼンス補正が達成でき、画面の全域におい
て良好な解像度を得ることができる。Effects of the Invention As described above, according to the present invention, dynamic convergence correction that moves the electron beams on both sides not only in the horizontal direction but also in the vertical direction can be achieved, and good resolution can be obtained over the entire screen.
第１図は本発明を実施したカラー受像管装置の要部の側
断面図、第２図は同装置の集束電極と第１、第２および
第３の磁極片との関係を示す斜視図、第３図および第４
図は同装置の横断面と磁界との関係を示す図、第５図は
従来のカラー受像管装置の横断面と磁界との関係を示す
図である。FIG. 1 is a side sectional view of the main parts of a color picture tube device embodying the present invention, and FIG. 2 is a perspective view showing the relationship between the focusing electrode and first, second, and third magnetic pole pieces of the same device. Figures 3 and 4
This figure is a diagram showing the relationship between the cross section of the device and the magnetic field, and FIG. 5 is a diagram showing the relationship between the cross section of the conventional color picture tube device and the magnetic field.
Claims (1)
の偏向磁界を発生する偏向ヨークを装着し、３電子ビー
ムの集中誤差をダイナミック・コンバーゼンス手段によ
り補正せしめるカラー受像管装置において、前記電子銃
を構成する集束電極が、垂直方向径よりも大きい水平方
向径を有する筒状体からなるとともに、センターの電子
ビーム通路を包囲する四角筒状磁性体の第１のポールピ
ースと、このポールピースの両側面にサイドの電子ビー
ム通路を介して内側面が向き合う第２および第３のポー
ルピースとを内蔵してなり、前記カラー受像管のガラス
外囲器のネック部外周面上に設けられた磁界発生器が、
前記ネック部を包囲する円環状のコアーと、このコアー
の４つの磁極部に巻装されたコイルとを有し、４つの前
記磁極部が前記第１のポールピースの上下面ならびに前
記第２および第３のポールピースの各外側面にそれぞれ
向き合っていることを特徴とするカラー受像管装置。A color picture tube device equipped with an in-line electron gun is equipped with a deflection yoke that generates a nearly uniform deflection magnetic field, and the concentration error of three electron beams is corrected by a dynamic convergence means. The constituting focusing electrode consists of a cylindrical body having a diameter in the horizontal direction that is larger than the diameter in the vertical direction, and a first pole piece made of a rectangular cylindrical magnetic material that surrounds the center electron beam path, and a first pole piece on both sides of this pole piece. A magnetic field generating device is provided on the outer circumferential surface of the neck portion of the glass envelope of the color picture tube, and includes second and third pole pieces whose inner surfaces face each other through a side electron beam path. The vessel is
It has an annular core surrounding the neck portion, and a coil wound around four magnetic pole portions of this core, and the four magnetic pole portions are arranged on the upper and lower surfaces of the first pole piece and the second and second pole pieces. A color picture tube device characterized in that each outer surface of the third pole piece faces each other.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1259242A JP2945688B2 (en) | 1989-10-03 | 1989-10-03 | Color picture tube equipment |
| GB9021373A GB2237680B (en) | 1989-10-03 | 1990-10-02 | A color cathode ray tube |
| CN 90108997 CN1018967B (en) | 1989-10-03 | 1990-10-03 | Color cathode ray tube |
| US07/908,839 US5233267A (en) | 1989-10-03 | 1992-07-02 | Dynamic convergence system for color cathode ray tubes having an in line electron gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1259242A JP2945688B2 (en) | 1989-10-03 | 1989-10-03 | Color picture tube equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03120987A true JPH03120987A (en) | 1991-05-23 |
| JP2945688B2 JP2945688B2 (en) | 1999-09-06 |
Family
ID=17331384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1259242A Expired - Fee Related JP2945688B2 (en) | 1989-10-03 | 1989-10-03 | Color picture tube equipment |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2945688B2 (en) |
| CN (1) | CN1018967B (en) |
| GB (1) | GB2237680B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4833529B1 (en) * | 1968-12-30 | 1973-10-15 | ||
| DE3219954A1 (en) * | 1982-05-27 | 1983-12-01 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | COLOR IMAGE TUBES WITH TWIST CORRECTION |
| EP0218961B1 (en) * | 1985-09-27 | 1989-08-16 | Hitachi, Ltd. | Convergence correcting device capable of coma correction for use in a cathode ray tube having in-line electron guns |
| JP2661024B2 (en) * | 1986-12-27 | 1997-10-08 | ソニー株式会社 | Cathode ray tube |
-
1989
- 1989-10-03 JP JP1259242A patent/JP2945688B2/en not_active Expired - Fee Related
-
1990
- 1990-10-02 GB GB9021373A patent/GB2237680B/en not_active Expired - Fee Related
- 1990-10-03 CN CN 90108997 patent/CN1018967B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB9021373D0 (en) | 1990-11-14 |
| GB2237680A (en) | 1991-05-08 |
| CN1051640A (en) | 1991-05-22 |
| GB2237680B (en) | 1994-06-01 |
| CN1018967B (en) | 1992-11-04 |
| JP2945688B2 (en) | 1999-09-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |