JPH0354420B2 - - Google Patents
Info
- Publication number
- JPH0354420B2 JPH0354420B2 JP57107890A JP10789082A JPH0354420B2 JP H0354420 B2 JPH0354420 B2 JP H0354420B2 JP 57107890 A JP57107890 A JP 57107890A JP 10789082 A JP10789082 A JP 10789082A JP H0354420 B2 JPH0354420 B2 JP H0354420B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- picture tube
- deflection
- deflection coil
- focusing electrode
- 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.)
- Expired - Lifetime
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
- H01J29/701—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
Description
【発明の詳細な説明】
本発明は、偏向歪を軽減させたカラー受像管装
置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a color picture tube device with reduced deflection distortion.
コンピユータ端末機器や文字多重放送受像機等
に用いられるカラー受像管は、螢光膜スクリーン
の全域で高い解像度を示さなければならない。し
かし、３つの電子ビーム放射口を水平一直線上に
配列してなるインライン形カラー受像管では、セ
ルフコンバージエンス効果を得るために水平偏向
磁界をピンクツシヨン状に歪ませ、垂直偏向状界
をバレル状に歪ませているので、第１図に示すよ
うに螢光膜スクリーン１の水平軸上両端付近に得
られるビームスポツト２は、偏向歪により水平方
向に長い楕円となり、螢光膜スクリーン周辺部で
の解像度が比較的低いものとなる。 Color picture tubes used in computer terminal equipment, teletext receivers, etc. must exhibit high resolution over the entire area of the phosphor screen. However, in an in-line color picture tube in which three electron beam emission ports are arranged horizontally in a straight line, the horizontal deflection magnetic field is distorted into a pink tension shape and the vertical deflection field is distorted into a barrel shape in order to obtain a self-convergence effect. Because of the distortion, the beam spots 2 obtained near both ends of the phosphor screen 1 on the horizontal axis as shown in Figure 1 become ellipses that are long in the horizontal direction due to the deflection distortion, and the beam spots 2 at the periphery of the phosphor screen 1 become ellipses that are long in the horizontal direction due to the deflection distortion. The resolution will be relatively low.
偏向歪を軽減させるために、受像管ネツク部の
外周面上に四極磁界発生器を設け、ビーム偏向量
に応じて変化する特殊波形の電流を前記四極磁界
発生器の４個のコイルに流すことが行なわれてい
る。しかし、かかるダイナミツクアステイグマテ
イズム補正方法は、単電子銃形受像管に適用して
ビームスポツト形状を真円に近づけることができ
ても、回路構成がかなり複雑となり、しかも、イ
ンライン形カラー受像管への適用は難しい。 In order to reduce deflection distortion, a quadrupole magnetic field generator is provided on the outer peripheral surface of the picture tube neck portion, and a current with a special waveform that changes depending on the amount of beam deflection is passed through the four coils of the quadrupole magnetic field generator. is being carried out. However, although such a dynamic stigmatism correction method can be applied to a single electron gun type picture tube and the beam spot shape can be made close to a perfect circle, the circuit configuration is quite complicated, and moreover, it is difficult to apply it to an inline type color picture tube. Difficult to apply to pipes.
偏向磁界が斉一に近いほど偏向歪は少ないが、
セルフコンバージエンス効果を得るためには、前
述のように水平偏向磁界をピンクツシヨン状に歪
ませなければならない。一方、３電子ビームのミ
スコンバージエンスには、非点収差による分とコ
マ収差による分とがあり、前者は第２図に示すよ
うなかたちで現れ、後者は第３図に示すようなか
たちで現れる。ただし、３，４，５はインライン
配列された３つの電子ビーム放射口、６，７，８
は各電子ビームによるラスタを示す。 The closer the deflection magnetic field is to uniformity, the lower the deflection distortion.
In order to obtain the self-convergence effect, the horizontal deflection magnetic field must be distorted into a pink tension shape as described above. On the other hand, the misconvergence of three electron beams has two parts: one due to astigmatism and the other due to coma; the former appears in the form shown in Figure 2, and the latter appears in the form shown in Figure 3. appear. However, 3, 4, 5 are three electron beam emission ports arranged inline, 6, 7, 8
shows the raster generated by each electron beam.
水平偏向磁界のうち、陰極側の部分がコマ収差
に大きく影響し、螢光膜スクリーン側の部分が非
点収差に影響する。逆にいうと、陰極側の水平偏
向磁界部分は非点収差にほとんど関与しないの
で、これを、バレル状に変えてもさしつかえがな
い。 Of the horizontal deflection magnetic field, the part on the cathode side greatly influences coma aberration, and the part on the fluorescent film screen side influences astigmatism. Conversely, since the horizontal deflection magnetic field portion on the cathode side hardly contributes to astigmatism, there is no problem in changing it into a barrel shape.
また、コマ収差によるミスコンバージエンス
は、周知の補正手段、たとえば特公昭52−4905号
公報に記載されているようなコマ収差補正手段に
よつて解決できる。 Further, misconvergence due to coma aberration can be solved by a well-known correcting means, for example, a coma aberration correcting means as described in Japanese Patent Publication No. 52-4905.
本発明によると、水平偏向磁界を全体としてピ
ンクツシヨン状のなすとともに、陰極側の水平偏
向磁界部分を強いバレル状となすので、水平偏向
磁界は斉一に近づき、偏向歪が軽減される。しか
し、水平偏向コイルの巻き構造によつて偏向磁界
分布を部分的に強いバレル状となすことは困難で
あり、本発明では、電子銃電極に磁極片を付設し
て偏向磁界のバレル性を強める。 According to the present invention, the horizontal deflection magnetic field as a whole has a pincushion shape, and the horizontal deflection magnetic field portion on the cathode side has a strong barrel shape, so that the horizontal deflection magnetic field approaches uniformity and deflection distortion is reduced. However, it is difficult to make the deflection magnetic field distribution partially strong barrel-like due to the winding structure of the horizontal deflection coil, so in the present invention, a magnetic pole piece is attached to the electron gun electrode to strengthen the barrel-like shape of the deflection magnetic field. .
本発明の１実施例を示す第４図において、バイ
ポテンシヤル形電子銃のG3電極たる第１の加速
集束電極９は、その水平方向２側壁の各内面に磁
性体からなる第１および第２の磁極片１０，１１
を付設しており両磁極片１０，１１は櫛状に形成
されていて相対向し、３つの電子ビーム通路に向
つて突出する３つの突部１０ａ，１０ｂ，１０
ｃ；１１ａ，１１ｂ，１１ｃをそれぞれ有してい
る。このため、ピンクツシヨン状水平偏向磁界の
陰極側部分は同図に矢印１２で示すように歪み、
電子ビーム放射口３，４，５を出る前の電子ビー
ムは、バレル状水平偏向磁界１３を通過し、電子
ビーム放射口３，４，５を出たのちピンクツシヨ
ン状水平偏向磁界を通過することになる。そし
て、バレル状水平偏向磁界１３のバレル状歪み
は、ビーム傾向角が増すに伴つて強くなるので、
両歪みの相殺作用により偏向歪の発生が軽減され
る。 In FIG. 4 showing one embodiment of the present invention, a first acceleration and focusing electrode 9, which is a G3 electrode of a bipotential electron gun, has first and second electrodes made of a magnetic material on each inner surface of its two horizontal side walls. magnetic pole pieces 10, 11
Both magnetic pole pieces 10 and 11 are formed in a comb shape and face each other, and have three protrusions 10a, 10b, 10 that protrude toward the three electron beam paths.
c; have 11a, 11b, and 11c, respectively. Therefore, the cathode side portion of the pink tension horizontal deflection magnetic field is distorted as shown by arrow 12 in the figure.
The electron beams before exiting the electron beam radiation ports 3, 4, and 5 pass through a barrel-shaped horizontal deflection magnetic field 13, and after exiting the electron beam radiation ports 3, 4, and 5, they pass through a pincushion-shaped horizontal deflection magnetic field. Become. The barrel-shaped distortion of the barrel-shaped horizontal deflection magnetic field 13 becomes stronger as the beam tendency angle increases.
Due to the canceling effect of both distortions, the occurrence of deflection distortion is reduced.
なお、インライン形カラー受像管において広く
採用されているバイポテンシヤル形電子銃では、
高電位が与えられる第２の加速集束電極（G4）
と、前記高電位の18〜30％程度の中電位が与えら
れる第２の加速集束電極（G3）とよりメインレ
ンズが生成されるものであり、メインレンズ付近
における偏向磁界は微弱となつているのが普通で
ある。しかし、メインレンズ付近における磁界の
影響力は、主偏向領域の3.3〜5.6倍と強いので、
メインレンズに入る直前での磁界分布を前述のよ
うに変えることによつて相当の偏向歪改善効果を
得ることができる。 In addition, in the bipotential electron gun widely used in in-line color picture tubes,
Second accelerating and focusing electrode (G 4 ) to which a high potential is applied
The main lens is generated by the second accelerating and focusing electrode (G 3 ) to which a medium potential of about 18 to 30% of the high potential is applied, and the deflection magnetic field near the main lens becomes weak. It is normal to have one. However, the influence of the magnetic field near the main lens is 3.3 to 5.6 times stronger than the main deflection area, so
By changing the magnetic field distribution just before entering the main lens as described above, a considerable effect of improving deflection distortion can be obtained.
主偏向磁界がメインレンズ付近に浸透すると、
あるいは磁極片１０，１１による磁束集中作用で
メインレンズ付近の磁界が実効的に強くなると、
メインレンズに入る直前の電子ビームは、わずか
に偏向作用を受けてメインレンズ中心から外れる
ことがある。この場合、ビームスポツトは収差の
影響で垂直方向に延びたいわゆる縦長の傾向に歪
むが、この歪みの方向はピンクツシヨン状磁界に
よる横長歪みを相殺する方向であるのに、この面
でもビームスポツトを真円に近づけることができ
る。 When the main deflection magnetic field penetrates near the main lens,
Or, if the magnetic field near the main lens becomes effectively strong due to the magnetic flux concentration effect of the magnetic pole pieces 10 and 11,
The electron beam just before entering the main lens may be slightly deflected and deviate from the center of the main lens. In this case, the beam spot is distorted in a vertically elongated direction due to the influence of aberrations, but although the direction of this distortion is to cancel out the horizontal distortion caused by the pink coupling magnetic field, even in this plane the beam spot is distorted in a vertical direction. It can be made closer to a circle.
水平偏向磁界がメインレンズ付近にあまり浸透
しない型式の装置では、第５図および第６図に示
すようにメインレンズ生成付近に対応したバルブ
ネツク部１４の外周面上に、主偏向コイルとは別
体の２個１対の補助偏向コイル１５，１６を設
け、水平偏向電流に同期しかつ相似した波形の補
正電流をコイル１５，１６に流し、これにより生
じる磁界を第１および第２の磁極片１０，１１に
作用させることができる。以上のように本発明
は、カラー受像管と、同受像管に装着されて全体
としてはピンクツシヨン状に歪んだ水平偏向磁界
を発生する偏向コイルとを備えてなり、前記カラ
ー受像管が中電位の与えられる第１の加速集束電
極と、その先端側に位置して高電位の与えられる
第２の加速集束電極とによりメインレンズを生成
するインライン型電子銃を封入してなるカラー受
像管装置に係り、前記第１の加速集束電極が、垂
直軸方向に相対向する第１および第２の磁極片を
内蔵し、各磁極片が前記水平偏向磁界の及ぶ位置
にあつて３つの電子ビーム通路側へ突出した３つ
の突部を有する構成となされる。電子ビームはバ
レル状磁界を通過してメインレンズに入り、ピン
クツシヨン状の水平偏向磁界を経て螢光膜スクリ
ーンに達するので、微弱なバレル磁界でもつて効
率よく電子ビームの偏向歪みを軽減せしめ得、螢
光膜スクリーンの周辺部に生成されるビームスポ
ツトが真円に近づくことから、前記周辺部での解
像度を高めることができる。また、メインレンズ
を通過した電子ビームがレンズ収差で歪んでも、
主偏向磁界内での偏向歪みで相殺されるので、ビ
ームスポツトの真円度を一層高めることができ
る。さらに、第１および第２の磁極片が電極内に
設けられるので電子銃は長大化せず、しかも、磁
極片は１対で足りるので比較的容易に付設できる
という利点がある。 In a type of device in which the horizontal deflection magnetic field does not penetrate much into the vicinity of the main lens, as shown in FIGS. A pair of auxiliary deflection coils 15 and 16 are provided, and a correction current having a similar waveform and synchronized with the horizontal deflection current is passed through the coils 15 and 16, and the magnetic field generated thereby is applied to the first and second magnetic pole pieces 10. , 11. As described above, the present invention includes a color picture tube and a deflection coil that is attached to the picture tube and generates a horizontal deflection magnetic field that is distorted in a pink tension shape as a whole, and the color picture tube has a medium potential. The present invention relates to a color picture tube device including an in-line electron gun that generates a main lens by a first accelerating and focusing electrode that is given a high potential and a second accelerating and focusing electrode that is located on the tip side and is given a high potential. , the first accelerating and focusing electrode includes first and second magnetic pole pieces facing each other in the vertical axis direction, and each magnetic pole piece is located at a position covered by the horizontal deflection magnetic field and is directed toward the three electron beam paths. It is configured to have three protrusions. The electron beam passes through a barrel-shaped magnetic field, enters the main lens, and reaches the fluorescent film screen through a pink tension-shaped horizontal deflection magnetic field, so even a weak barrel magnetic field can efficiently reduce the deflection distortion of the electron beam. Since the beam spot generated at the periphery of the optical film screen approaches a perfect circle, the resolution at the periphery can be improved. Also, even if the electron beam passing through the main lens is distorted due to lens aberration,
Since this is canceled out by the deflection distortion within the main deflection magnetic field, the circularity of the beam spot can be further improved. Furthermore, since the first and second magnetic pole pieces are provided within the electrodes, the electron gun does not become long, and since only one pair of magnetic pole pieces is required, it is advantageous in that it can be attached relatively easily.
第１図は偏向歪によるビームスポツト歪みを説
明するための図、第２図は非点収差によるミスコ
ンバージエンスを説明するための図、第３図はコ
マ収差によるミスコバージエンスを説明するため
の図、第４図は本発明の１実施例の要部側面図、
第５図は本発明の他の実施例の要部の一部破断側
面図、第６図は同横断面図である。
９……第１の加速集束電極、１０，１１……磁
極片、１０ａ，１０ｂ，１０ｃ，１１ａ，１１
ｂ，１１ｃ……突部。
Figure 1 is a diagram to explain beam spot distortion due to deflection distortion, Figure 2 is a diagram to explain misconvergence due to astigmatism, and Figure 3 is a diagram to explain miscovergence due to coma aberration. Figure 4 is a side view of essential parts of one embodiment of the present invention,
FIG. 5 is a partially cutaway side view of a main part of another embodiment of the present invention, and FIG. 6 is a cross-sectional view of the same. 9...First acceleration and focusing electrode, 10, 11...Magnetic pole piece, 10a, 10b, 10c, 11a, 11
b, 11c...Protrusion.
Claims (1)
としてはピンクツシヨン状に歪んだ水平偏向磁界
を発生する偏向コイルとを備え、前記カラー受像
管は中電位が与えられる第１の加速集束電極と、
その先端側に位置して高電位が与えられる第２の
加速集束電極とによりメインレンズを生成するイ
ンライン型電子銃を封入してなり、前記第１の加
速集束電極は垂直軸方向に相対向する第１および
第２の磁極片を内蔵し、各磁極片は前記水平偏向
磁界が及ぶ位置にあつて３つの電子ビーム通路側
へ突出した３つの突部を有していることを特徴と
するカラー受像管装置。 ２ 偏向コイルが主偏向コイルとは別体の補助偏
向コイル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。[Scope of Claims] 1. A color picture tube, and a deflection coil that is attached to the picture tube and generates a horizontal deflection magnetic field that is distorted in the shape of a pink tension as a whole, and the color picture tube is provided with a deflection coil that is attached to the picture tube and generates a horizontal deflection magnetic field that is distorted in the form of a pink tension. 1 acceleration and focusing electrode;
A second accelerating and focusing electrode located on the tip side and to which a high potential is applied encloses an in-line type electron gun that generates a main lens, and the first accelerating and focusing electrode faces each other in the vertical axis direction. A collar having a built-in first and second magnetic pole piece, each magnetic pole piece having three protrusions protruding toward the three electron beam paths at a position where the horizontal deflection magnetic field extends. Picture tube device. 2. The color picture tube device according to claim 1, wherein the deflection coil is an auxiliary deflection coil separate from the main deflection coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10789082A JPS58225543A (en) | 1982-06-23 | 1982-06-23 | Color picture tube apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10789082A JPS58225543A (en) | 1982-06-23 | 1982-06-23 | Color picture tube apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58225543A JPS58225543A (en) | 1983-12-27 |
| JPH0354420B2 true JPH0354420B2 (en) | 1991-08-20 |
Family
ID=14470664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10789082A Granted JPS58225543A (en) | 1982-06-23 | 1982-06-23 | Color picture tube apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58225543A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101438106B1 (en) * | 2011-12-30 | 2014-09-12 | 두산중공업 주식회사 | Combustion apparatus for gas turbin |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001135259A (en) | 1999-11-02 | 2001-05-18 | Matsushita Electronics Industry Corp | Color cathode-ray tube and apparatus thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5372522A (en) * | 1976-12-10 | 1978-06-28 | Mitsubishi Electric Corp | Color picture tube |
| NL7802129A (en) * | 1978-02-27 | 1979-08-29 | Philips Nv | DEVICE FOR DISPLAYING COLORED IMAGES. |
| DE3003197A1 (en) * | 1980-01-30 | 1981-08-06 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | DEVICE FOR ADJUSTING THE ELECTRON BEAMS OF A COLOR IMAGE TUBE |
| JPS57168455A (en) * | 1981-04-07 | 1982-10-16 | Mitsubishi Electric Corp | Color cathode-ray tube |
| JPS57189437A (en) * | 1981-05-18 | 1982-11-20 | Toshiba Corp | Color picture tube |
-
1982
- 1982-06-23 JP JP10789082A patent/JPS58225543A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101438106B1 (en) * | 2011-12-30 | 2014-09-12 | 두산중공업 주식회사 | Combustion apparatus for gas turbin |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58225543A (en) | 1983-12-27 |
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