JPS6158940B2 - - Google Patents
Info
- Publication number
- JPS6158940B2 JPS6158940B2 JP13933277A JP13933277A JPS6158940B2 JP S6158940 B2 JPS6158940 B2 JP S6158940B2 JP 13933277 A JP13933277 A JP 13933277A JP 13933277 A JP13933277 A JP 13933277A JP S6158940 B2 JPS6158940 B2 JP S6158940B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- auxiliary electrode
- focusing
- electron
- voltage
- 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
Links
- 238000010894 electron beam technology Methods 0.000 claims description 12
- 230000007423 decrease Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000004075 alteration Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003068 static effect Effects 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
- H01J29/56—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses
- H01J29/566—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses for correcting aberration
Description
【発明の詳細な説明】
本発明は、インライン形電子銃を備えたカラー
受像管装置に係り、３本の電子ビームに集束作用
を与える集束電極内または集束電極と陽極との間
に補助電極を設けるとともに集束電極または補助
電極に矩形状開口を有せしめ、補助電極にダイナ
ミツクフオーカス電圧を印加することによつて、
スクリーン上に得られるビームスポツトの形状歪
を軽減させたものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a color picture tube device equipped with an in-line electron gun, in which an auxiliary electrode is provided within a focusing electrode or between the focusing electrode and an anode to focus three electron beams. By providing a focusing electrode or an auxiliary electrode with a rectangular opening and applying a dynamic focus voltage to the auxiliary electrode,
This reduces the shape distortion of the beam spot obtained on the screen.
一般に、インライン形電子銃を備えたカラー受
像管においては、その水平および垂直偏向手段の
少なくとも一方にトロイダル形偏向ヨークを使用
している。この場合、セルフコンバージエンス構
成となし得るので、回路構成を簡素化できるので
あるが、偏向磁界の不均一性が大きく、従つて、
スクリーン上に得られるビームスポツトが第１図
Ａに模式的に示すように、ビームの偏向角度に依
存して歪みやすい。なお、第１図Ａに示す９個の
ビームスポツト中、平行斜線で示したコアー部分
１は、同図Ｂに示すように比較的高い輝度となる
が、これよりとげ状に延び出たヘイズ部分２の輝
度は低い。 Generally, a color picture tube equipped with an in-line electron gun uses a toroidal deflection yoke for at least one of its horizontal and vertical deflection means. In this case, it is possible to have a self-convergence configuration, so the circuit configuration can be simplified, but the deflection magnetic field is highly non-uniform, and therefore,
The beam spot obtained on the screen is likely to be distorted depending on the deflection angle of the beam, as schematically shown in FIG. 1A. Of the nine beam spots shown in FIG. 1A, the core portion 1 indicated by parallel diagonal lines has relatively high brightness as shown in FIG. The brightness of 2 is low.
ところで、このようなカラー受像管の作動にお
いて、第２図に示すように集束電極に対する印加
電圧を、電子ビームの偏向角度に応じて変化させ
ると、つまり、ダイナミツクフオーカス方式を採
用すると、レンズ収差によつて生じるヘイズ部分
２を除去できる利点がある。しかし、この場合、
スクリーン周辺部に現われるビームスポツトのコ
アー部分１の扁平度が第３図に示すように益々大
きくなつてしまう。 By the way, in the operation of such a color picture tube, if the voltage applied to the focusing electrode is changed according to the deflection angle of the electron beam as shown in Fig. 2, that is, if a dynamic focus method is adopted, the lens There is an advantage that the haze portion 2 caused by aberration can be removed. But in this case,
The flatness of the core portion 1 of the beam spot appearing at the periphery of the screen becomes increasingly large as shown in FIG.
大体、コアー部分１を最適に収束させるための
条件は、偏向磁界の不均一性のために水平方向と
垂直方向とで異なる。そして、この傾向はとくに
セルフコンバージエンス方式を採用したものにお
いて顕著である。従つて、セルフコンバージエン
ス方式を採用したものにおける水平、垂直方向の
最適集束電圧は、スクリーンの中央部と周辺部と
で異なり、中央部および周辺部における最適集束
電圧は第４図Ａ，Ｂにそれぞれ示すようなものと
なる。 Generally speaking, the conditions for optimal focusing of the core portion 1 are different in the horizontal and vertical directions due to the non-uniformity of the deflection field. This tendency is particularly noticeable in devices that employ the self-convergence method. Therefore, the optimal focusing voltages in the horizontal and vertical directions in the self-convergence system are different between the center and the periphery of the screen, and the optimal focusing voltages at the center and periphery are shown in Figures 4A and B. Each will be as shown below.
同図から明らかなように、水平方向における最
適集束電圧は、スクリーンの中央部および周辺部
においていずれも7.5KV〜7.8KVの範囲でほぼ一
定であるが、垂直方向における最適集束電圧は、
スクリーンの中央部と周辺部とでかなり異なる。
従つて、セルフコンバージエンス方式を採用した
ものにおいて、スクリーン周辺部のビームスポツ
ト形状を真円に近づけるためには、ダイナミツク
フオーカスの効果を、水平方向と垂直方向とで異
ならせることが必要となる。 As is clear from the figure, the optimal focusing voltage in the horizontal direction is almost constant in the range of 7.5KV to 7.8KV both in the center and the periphery of the screen, but the optimal focusing voltage in the vertical direction is
There is a considerable difference between the center and periphery of the screen.
Therefore, in a device that uses the self-convergence method, in order to make the beam spot shape at the periphery of the screen close to a perfect circle, it is necessary to make the dynamic focus effect different in the horizontal and vertical directions. Become.
一方、インライン形電子銃の主レンズ系は、一
般に管軸を中心にして軸対称であるから、３本の
電子ビームが主レンズ系内で受ける集束作用は、
水平方向と垂直方向とでほぼ同一である。従つ
て、３本の電子ビームに対して水平方向と垂直方
向とで別々に集束させるためには、集束電極系に
軸非対称性を有せしめ、かつこれを管外から調整
できるように構成することが必要となる。 On the other hand, the main lens system of an in-line electron gun is generally axially symmetrical about the tube axis, so the focusing effect that the three electron beams receive within the main lens system is
It is almost the same in the horizontal and vertical directions. Therefore, in order to focus the three electron beams separately in the horizontal and vertical directions, it is necessary to provide the focusing electrode system with axial asymmetry and configure it so that this can be adjusted from outside the tube. Is required.
本発明は、この点に着目してなされたもので、
本発明のカラー受像管装置を以下図面に示した実
施例とともに説明する。 The present invention has been made focusing on this point,
DESCRIPTION OF THE PREFERRED EMBODIMENTS The color picture tube device of the present invention will be described below along with embodiments shown in the drawings.
第５図において、カツプ状の制御電極３とこれ
に内装された陰極４は電子放出部を形成してお
り、制御電極３の前方には、カツプ状の加速電極
５，集束電極６および陽極７が順次に同軸的に配
列されており、集束電極６内には、第６図に示す
ような扁平環状の補助電極８が、他の電極と絶縁
して配置されている。補助電極８は、横長矩形状
の開口９を有し、この開口９に電子ビームが流通
する。そして、かかる電極構造を備えた３本の電
子銃が、紙面に直角な一直線（水平軸）上に配列
され、３電子銃を構成している。 In FIG. 5, a cup-shaped control electrode 3 and a cathode 4 housed therein form an electron emitting section, and in front of the control electrode 3 are a cup-shaped acceleration electrode 5, a focusing electrode 6, and an anode 7. are sequentially and coaxially arranged, and a flat annular auxiliary electrode 8 as shown in FIG. 6 is arranged within the focusing electrode 6 insulated from other electrodes. The auxiliary electrode 8 has a horizontally long rectangular opening 9 through which the electron beam flows. Three electron guns each having such an electrode structure are arranged in a straight line (horizontal axis) perpendicular to the plane of the paper to form a three-electron gun.
このようなインライン形３電子銃を備えたカラ
ー受像管の作動においては、各集束電極６に第７
図Ａに示すような集束電圧を印加し、補助電極８
に第７図Ｂに示すような放物線波形のダイナミツ
クフオーカス電圧を印加する。この場合、３本の
電子ビームが補助電極８によつて受ける集束作用
は、偏向角度の増大に伴つて順次大となる。一
方、補助電極８は横長の矩形状開口９を有してい
るから、主レンズを通過する３本の電子ビーム
は、水平方向に比して垂直方向で小さい集束作用
を受けることとなり、スクリーン上の中央部およ
び周辺部に現われるビームスポツトは、いずれも
真円に近い形状となる。 In the operation of a color picture tube equipped with such an in-line three-electron gun, each focusing electrode 6 has a seventh
Apply a focusing voltage as shown in Figure A to the auxiliary electrode 8.
A dynamic focus voltage having a parabolic waveform as shown in FIG. 7B is applied to. In this case, the focusing effect exerted on the three electron beams by the auxiliary electrode 8 gradually increases as the deflection angle increases. On the other hand, since the auxiliary electrode 8 has a horizontally long rectangular aperture 9, the three electron beams passing through the main lens receive a smaller focusing effect in the vertical direction than in the horizontal direction. The beam spots that appear at the center and periphery of the beam have shapes close to perfect circles.
補助電極８の開口９を横長の矩形状となす代り
に、縦長の矩形状となしてもよい。ただし、この
場合は集束電極６に第８図Ａに示すような電圧を
印加し、補助電極８に第８図Ｂに示すような電圧
を印加する。いずれの場合も、補助電極８に対す
る印加電圧は、補助電極８の設置位置（集束電極
６の開口端からの距離）、補助電極６の開口９の
形状、大きさおよび補助電極６の板厚等を勘案し
て決められる。 Instead of forming the opening 9 of the auxiliary electrode 8 in a horizontally long rectangular shape, it may be formed in a vertically long rectangular shape. However, in this case, a voltage as shown in FIG. 8A is applied to the focusing electrode 6, and a voltage as shown in FIG. 8B is applied to the auxiliary electrode 8. In either case, the voltage applied to the auxiliary electrode 8 is determined by the installation position of the auxiliary electrode 8 (distance from the opening end of the focusing electrode 6), the shape and size of the opening 9 of the auxiliary electrode 6, the thickness of the auxiliary electrode 6, etc. It can be decided by taking into account.
前記実施例では、補助電極８を集束電極６内に
設けたが、第９図に示す実施例では集束電極６′
と陽極７との間に円筒状の補助電極１０をほぼ同
軸的に設け、補助電極１０および集束電極６′に
前述のような電圧を印加し、集束電極６′の補助
電極１０側開口１１の形状を、第１０図に例示す
るような横長または縦長の矩形状となしている。
この場合、前述と同様の効果が得られるほか、補
助電極１０の電極支持構造および電極端子導出構
造を簡素化できる利点がある。 In the embodiment described above, the auxiliary electrode 8 was provided inside the focusing electrode 6, but in the embodiment shown in FIG.
A cylindrical auxiliary electrode 10 is provided almost coaxially between the auxiliary electrode 10 and the anode 7, and the aforementioned voltage is applied to the auxiliary electrode 10 and the focusing electrode 6', and the opening 11 of the auxiliary electrode 10 side of the focusing electrode 6' is opened. The shape is a horizontally long or vertically long rectangle as illustrated in FIG.
In this case, in addition to obtaining the same effects as described above, there is an advantage that the electrode support structure and electrode terminal lead-out structure of the auxiliary electrode 10 can be simplified.
なお、第９図、第１０図において、l1，l2，
l3，l4，d1，d2，d3，d4で示した寸度は、たとえ
ば次のように設定できる。 In addition, in FIGS. 9 and 10, l 1 , l 2 ,
The dimensions indicated by l 3 , l 4 , d 1 , d 2 , d 3 , and d 4 can be set, for example, as follows.
l1＝18 mm d1＝4.5mm
l2＝0.75mm d2＝４ mm
l3＝１ mm d3＝4.5mm
l4＝1.3mm d4＝4.8mm
そして、陽極７に約27.5KVの電圧を印加する
場合、集束電極６′および補助電極１０に第１１
図Ａ，Ｂで示すような電圧をそれぞれ印加でき
る。ただしこの場合、集束電極６′の補助電極側
開口１１は、縦長の矩形状となす。l 1 = 18 mm d 1 = 4.5 mm l 2 = 0.75 mm d 2 = 4 mm l 3 = 1 mm d 3 = 4.5 mm l 4 = 1.3 mm d 4 = 4.8 mm And a voltage of about 27.5 KV on the anode 7 When applying , the 11th
Voltages as shown in Figures A and B can be applied. However, in this case, the auxiliary electrode side opening 11 of the focusing electrode 6' has a vertically long rectangular shape.
また、以上は独立した３本の電子銃をインライ
ン配列した電子銃構造のものについてのべたが、
本発明は、３電子銃を一体的に構成したユニタイ
ズ形インライン電子銃構造のものにも同様に実施
できる。ただし、ユニタイズ形インライン電子銃
では、通常、陽極に形成する３個の電子ビーム通
過用孔のうち、外側に位置する２個の孔を、集束
電極の対応孔に対してそれぞれ外側へ若干偏心さ
せて、スタテイツクコンバージエンス効果を得て
いるから、主レンズによる収差の発生は、第１図
に示すものよりも複雑となり、左右方向のヘイズ
が重なり合つて発生する。従つて、このようなユ
ニタイズ形インライン電子銃構造のものに本発明
を実施するには、前述のような構成に加えて、水
平方向の非対称性を追加することが望ましい。そ
して、この非対称性は、たとえば、集束電極に形
成する３個の矩形状開口のうち、外側に位置する
２個の開口を、若干外側方へ偏心させることによ
つて得られる。 Also, the above description has been about an electron gun structure in which three independent electron guns are arranged in-line.
The present invention can be similarly applied to a unitized in-line electron gun structure in which three electron guns are integrated. However, in a unitized in-line electron gun, of the three electron beam passing holes formed in the anode, the two outer holes are usually slightly eccentric to the outside relative to the corresponding hole in the focusing electrode. Since a static convergence effect is obtained, the aberration caused by the main lens is more complicated than that shown in FIG. 1, and the haze in the left and right directions overlaps. Therefore, in order to implement the present invention in such a unitized in-line electron gun structure, it is desirable to add horizontal asymmetry to the above configuration. This asymmetry can be obtained, for example, by making the two outer openings of the three rectangular openings formed in the focusing electrode slightly eccentric to the outer side.
以上のように、本発明のカラー受像管装置は、
３本の電子ビームを放出させるための電子放出部
を水平−直線上に配列してなるインライン形電子
銃の集束電極内、または集束電極と陽極との間
に、補助電極を設けるとともに、前記集束電極の
補助電極側端縁または前記補助電極における電子
ビーム通過用孔を横長または縦長の矩形状開口と
なし、偏向角度の増大に伴つて上昇または下降す
るダイナミツクフオーカス電圧を前記補助電極に
印加するものであり、スクリーンの中央部および
周辺部に現われるビームスポツトの形状を真円に
近いものとなし得、色ずれの少ないカラー画像を
再生できる。 As described above, the color picture tube device of the present invention has the following features:
An auxiliary electrode is provided within the focusing electrode or between the focusing electrode and the anode of an in-line electron gun in which electron emitting parts for emitting three electron beams are arranged horizontally and linearly, and an auxiliary electrode is provided between the focusing electrode and the anode. The auxiliary electrode side edge of the electrode or the electron beam passage hole in the auxiliary electrode is formed into a horizontally or vertically long rectangular opening, and a dynamic focus voltage that increases or decreases as the deflection angle increases is applied to the auxiliary electrode. The shape of the beam spot appearing at the center and periphery of the screen can be made close to a perfect circle, and a color image with less color shift can be reproduced.
第１図Ａはカラー受像管のスクリーン上に現わ
れるビームスポツトを模式的に示す図、同図Ｂは
前記ビームスポツトの輝度分布を示す図、第２図
はダイナミツクフオーカス電圧の波形図、第３図
はダイナミツクフオーカス方式を採用した場合の
スクリーン上に現われるビームスポツトを模式的
に示す図、第４図Ａはスクリーン中央部における
ビームスポツトの径と最適集束電圧との関係を示
す特性図、同図Ｂはスクリーン周辺部におけるビ
ームスポツトの水平方向径、垂直方向径と最適集
速電圧との関係を示す特性図、第５図は本発明を
実施したカラー受像管装置の電子銃の側断面図、
第６図は同電子銃の補助電極の平面図、第７図は
同カラー受像管装置の集束電圧とダイナミツクフ
オーカス電圧との関係を示す図、第８図は本発明
の他の実施例の集束電圧とダイナミツクフオーカ
ス電圧との関係を示す図、第９図は本発明の他の
実施例の電子銃の側断面図、第１０図は同電子銃
の集束電極の斜視図、第１１図は同実施例の集束
電圧とダイナミツクフオーカス電圧との関係を示
す図である。
４…陰極、６，６′…集束電極、８，１０…補
助電極、９，１１…矩形状開口。
FIG. 1A is a diagram schematically showing a beam spot appearing on the screen of a color picture tube, FIG. 1B is a diagram showing the luminance distribution of the beam spot, and FIG. Figure 3 is a diagram schematically showing the beam spot that appears on the screen when the dynamic focus method is adopted, and Figure 4A is a characteristic diagram showing the relationship between the diameter of the beam spot at the center of the screen and the optimal focusing voltage. , Figure B is a characteristic diagram showing the relationship between the horizontal and vertical diameters of the beam spot at the periphery of the screen and the optimum collection voltage, and Figure 5 is the side of the electron gun of the color picture tube device in which the present invention is implemented. cross section,
FIG. 6 is a plan view of the auxiliary electrode of the electron gun, FIG. 7 is a diagram showing the relationship between the focusing voltage and dynamic focus voltage of the color picture tube device, and FIG. 8 is another embodiment of the present invention. FIG. 9 is a side sectional view of an electron gun according to another embodiment of the present invention, FIG. 10 is a perspective view of the focusing electrode of the electron gun, and FIG. FIG. 11 is a diagram showing the relationship between the focusing voltage and the dynamic focus voltage in the same embodiment. 4...Cathode, 6,6'...Focusing electrode, 8,10...Auxiliary electrode, 9,11...Rectangular opening.
Claims (1)
出部を直線上に配列してなるインライン形電子銃
の集束電極内または集束電極と陽極との間に補助
電極を設けるとともに、前記集束電極の補助電極
側端縁または前記補助電極における電子ビーム通
過用孔を横長または縦長の矩形状開口となし、偏
向角度の増大に伴つて上昇または下降するダイナ
ミツクフオーカス電圧を前記補助電極に印加する
ことを特徴とするカラー受像管装置。1. An auxiliary electrode is provided within the focusing electrode or between the focusing electrode and the anode of an in-line electron gun in which electron emitting parts for emitting three electron beams are arranged in a straight line, and an auxiliary electrode of the focusing electrode is provided. The electron beam passing hole in the electrode side edge or the auxiliary electrode is formed into a horizontally or vertically long rectangular opening, and a dynamic focus voltage that increases or decreases as the deflection angle increases is applied to the auxiliary electrode. Characteristic color picture tube device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13933277A JPS5471926A (en) | 1977-11-18 | 1977-11-18 | Color picture tube unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13933277A JPS5471926A (en) | 1977-11-18 | 1977-11-18 | Color picture tube unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5471926A JPS5471926A (en) | 1979-06-08 |
| JPS6158940B2 true JPS6158940B2 (en) | 1986-12-13 |
Family
ID=15242842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13933277A Granted JPS5471926A (en) | 1977-11-18 | 1977-11-18 | Color picture tube unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5471926A (en) |
-
1977
- 1977-11-18 JP JP13933277A patent/JPS5471926A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5471926A (en) | 1979-06-08 |
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