JPS62133647A - Electron gun structure for cathode-ray tube - Google Patents
Electron gun structure for cathode-ray tubeInfo
- Publication number
- JPS62133647A JPS62133647A JP27149185A JP27149185A JPS62133647A JP S62133647 A JPS62133647 A JP S62133647A JP 27149185 A JP27149185 A JP 27149185A JP 27149185 A JP27149185 A JP 27149185A JP S62133647 A JPS62133647 A JP S62133647A
- Authority
- JP
- Japan
- Prior art keywords
- grid
- support member
- grids
- electron gun
- ray tube
- 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
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は主レンズ口径を極力大口径化してフォーカス特
性を向上させた単一電子ビーム用陰極線管電子銃構体に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a single electron beam cathode ray tube electron gun assembly in which the main lens diameter is made as large as possible to improve focus characteristics.
第２図は従来の多段集束型電子銃構体の一例を示し、図
中、１．２．３．４．５．６は、それぞれ、第１、第２
、第３、第４、第５、第６グリッドで、７はこれらのグ
リッドを相互に絶縁して外側から支持する絶縁支持棒（
絶縁耐電圧を下げる原因となる縦方向に長い気泡が残存
しないように、粉末ガラスを焼結して製作した、所謂マ
ルチフオームガラス）である。FIG. 2 shows an example of a conventional multi-stage focusing electron gun structure, and in the figure, 1.2.3.4.5.6 are the first and second
, the third, fourth, fifth, and sixth grids, and 7 is an insulating support rod (7) that insulates these grids from each other and supports them from the outside.
This is so-called multiform glass, which is manufactured by sintering powdered glass so that there are no vertically long bubbles that would lower the dielectric strength voltage.
静電レンズの場合も光学レンズの場合と同様に、大口径
レンズの中央に近い部分を用いると収差の少ない良好な
画像が得られる。そのため、レンズを形成するグリッド
、特に最終段にある主レンズを形成する第６グリッドの
直径を大きくすることが望ましい。In the case of an electrostatic lens, as in the case of an optical lens, a good image with less aberration can be obtained by using a portion close to the center of a large-diameter lens. Therefore, it is desirable to increase the diameter of the grid forming the lens, especially the sixth grid forming the main lens at the final stage.
なお、電極構成としては例えば特開昭５８−１４７９４
２号公報記載のもの等が知られている。In addition, as for the electrode configuration, for example, Japanese Patent Application Laid-Open No. 58-14794
The one described in Publication No. 2 is known.
しかし、一方では、偏向電力低減などのため、陰極線管
バルブのネック管径を小さくすることが望まれており、
グリッドの直径（外径）を太き（することはネック管内
径の制約を受けて困難であるという問題があった。However, on the other hand, it is desired to reduce the neck tube diameter of cathode ray tube bulbs in order to reduce deflection power.
There was a problem in that it was difficult to increase the diameter (outer diameter) of the grid due to the restriction of the inner diameter of the neck tube.
本発明の目的は、上記従来の電子銃構体のような問題の
ない、ネック管内径の許す範囲内で、極力、主レンズ径
を大きくした陰極線管電子銃構体を提供するごとにある
。An object of the present invention is to provide a cathode ray tube electron gun assembly in which the diameter of the main lens is as large as possible within the range allowed by the inner diameter of the neck tube, without the problems of the conventional electron gun assembly.
上記目的を達成するために本発明においては、電子銃を
形成する各グリッドのうち、第１〜第５グリッドだけを
、絶縁支持棒により外側から支持させ、内部に挿入され
た第５グリッドと共に大口径化した主レンズを形成する
第６グリッドは、金属製支持部材を介して第４グリノＦ
に支持させることとした。In order to achieve the above object, in the present invention, among the respective grids forming the electron gun, only the first to fifth grids are supported from the outside by insulating support rods, and together with the fifth grid inserted inside, the first to fifth grids are supported from the outside. The sixth grid forming the apertured main lens is connected to the fourth grid F through a metal support member.
I decided to support it.
このような構造とすれば、第６グリッドの外側とネック
管内面との間には、絶縁支持棒が存在しなくなり、絶縁
支持棒に占められていた間隔分だけ第６グリッドの直径
を太き（することができるからである。なお、周知の如
く、多段築束型電子銃では第４グリッドと第６グリッド
には、共に、螢光面と同一の高い陽極電位が印加される
のであるから、上記のような、第４グリッドに導電性の
ある金属支持部材を介して第６グリッドを支持させる構
造がとれるのである。With this structure, there will be no insulating support rod between the outside of the sixth grid and the inner surface of the neck tube, and the diameter of the sixth grid will be increased by the space occupied by the insulating support rod. (This is because it is possible to do so.As is well known, in a multi-stage focusing electron gun, the same high anode potential as the fluorescent surface is applied to both the fourth and sixth grids. As described above, a structure can be adopted in which the fourth grid supports the sixth grid via a conductive metal support member.
第１図（ａ）は本発明の第１実施例を、２本の絶縁支持
棒が存在する平面上から眺めた下半部を断面にした側Ｗ
ｆ面図、第１図（ｂ）は同実施例の２本の絶縁支持棒の
存在する平面に対し直角な方向から眺めた側断面図であ
る。図中、８は第６グリッド６を支持する板状の金属支
持部材（第４グリッドと第６グリッドを電気的に接続し
て同電位を印加するリード線を兼ねる）、９は第４グリ
ッド４に溶接され金属支持部材８を溶接支持する基部支
持部材で、その他の符号は第２図の場合と同様である。FIG. 1(a) shows the first embodiment of the present invention, viewed from a plane on which two insulating support rods exist, and shows a cross-sectional side W of the lower half.
The f-plane view and FIG. 1(b) are side sectional views viewed from a direction perpendicular to the plane on which the two insulating support rods of the same embodiment exist. In the figure, 8 is a plate-shaped metal support member that supports the sixth grid 6 (also serves as a lead wire that electrically connects the fourth grid and the sixth grid and applies the same potential), 9 is the fourth grid 4 The base support member is welded to the metal support member 8 and supports the metal support member 8 by welding.Other reference numerals are the same as those in FIG.
この場合、第６グリッド６の外側に金属支持部材８が溶
接されているが、比較的幅は広いが板厚の薄い金属板製
であって、絶縁支持棒７を配置するのに必要なネック管
直径方向の間隔に比較すると金属支持部材８の板厚は問
題にならないくらい薄い。In this case, a metal support member 8 is welded to the outside of the sixth grid 6, but it is made of a relatively wide but thin metal plate, and is made of a metal plate that is relatively wide but has a neck that is necessary for arranging the insulating support rod 7. Compared to the spacing in the tube diameter direction, the thickness of the metal support member 8 is so thin that it does not pose a problem.
第１図（ｃ）は本発明の第２実施例を示す側断面図で、
基部支持部材９を省き、金属支持部材１０の一端を折り
曲げて直接第４グリッド４に溶接できるようにしである
。FIG. 1(c) is a side sectional view showing a second embodiment of the present invention.
The base support member 9 is omitted, and one end of the metal support member 10 is bent so that it can be directly welded to the fourth grid 4.
金属支持部材の溶接に、非接触で多点同時溶接の可能な
レーザ溶接等を用いれば、第６グリッドを良好な精度で
第４グリッドに固定することが可能である。If laser welding or the like capable of simultaneous multi-point welding without contact is used for welding the metal support member, it is possible to fix the sixth grid to the fourth grid with good accuracy.
また、第６グリッド用金属支持部材の電界の影響により
、第４グリッドと第５グリッドの間に形成される静電レ
ンズに歪が生じないようにするために、第４グリッドと
第５グリッドの間隙を１．４ｆｌ以下に制限することが
望ましい。しかし、この間隙を１．０１Ａ１以下にする
と耐電圧性に問題が生ずるようになる。第３図に示すよ
うに、第４グリッド４ａの第５グリソト側端邪にフラン
ジ４ｂを設けることにより、第４グリッドと第５グリッ
ドの間に形成される静電レンズに対する第６グリッド用
金属支持部材の電界の影響を少な（することが出来る。In addition, in order to prevent distortion from occurring in the electrostatic lens formed between the fourth and fifth grids due to the influence of the electric field of the metal support member for the sixth grid, the fourth and fifth grids are It is desirable to limit the gap to 1.4 fl or less. However, if this gap is set to 1.01 A1 or less, a problem will arise in voltage resistance. As shown in FIG. 3, by providing a flange 4b at the end of the fourth grid 4a on the fifth grid side, metal support for the sixth grid is provided for the electrostatic lens formed between the fourth grid and the fifth grid. It is possible to reduce the influence of the electric field on the member.
以上説明したように本発明によれば、多段集束型電子銃
構体において、絶縁支持棒による制約を受けずに、外径
がネック管内径より僅かに小さい、従来より直径の大き
な第６グリッドを用いられるようになり、大口径化した
主レンズの使用によりフォーカス特性を向上させること
が出来る。As explained above, according to the present invention, in a multi-stage focusing electron gun structure, the sixth grid, which has an outer diameter slightly smaller than the inner diameter of the neck tube and has a larger diameter than the conventional one, is used without being constrained by the insulating support rod. By using a main lens with a larger aperture, focus characteristics can be improved.
第１図（ａ）、（ｂ）は本発明の第１実施例の側断面図
、第１図（ｃ）は本発明の第２実施例の側断面図、第２
図は従来の多段集束型電子銃構体の一例を示す側断面図
、第３図は第４グリッド端邪にフランジを設けて金属支
持棒８の電界の第４−第５グリッド間静電レンズへの影
響を少なくした電極構体を示す側断面図である。
１〜６−第１〜第６グリッド、 ４ａ・−・−金属支持
部材の電界の影響を軽減するためにフランジ４ｂを設け
た第４グリッド、 ７− 絶縁支持棒、８−金属支持
部材、 ９・−基部支持部材、 ｌＯ・−ｍ一体型の金
属支持部材。
代理人 弁理士 小川 勝馬 ′ ＼
（１，パ
＼−）、
第 １ 図
（ａ−）
第 ２ 図
第 ３ 図1(a) and 1(b) are side sectional views of a first embodiment of the present invention, FIG. 1(c) is a side sectional view of a second embodiment of the present invention, and FIG.
The figure is a side sectional view showing an example of a conventional multi-stage focusing electron gun structure, and FIG. 3 is a flange provided at the end of the fourth grid to transfer the electric field of the metal support rod 8 to an electrostatic lens between the fourth and fifth grids. FIG. 3 is a side cross-sectional view showing an electrode structure in which the influence of 1 to 6-first to sixth grids, 4a...-fourth grid provided with flanges 4b to reduce the influence of the electric field on the metal support member, 7-insulating support rod, 8-metal support member, 9・-Base support member, lO・-m integrated metal support member. Agent Patent Attorney Katsuma Ogawa ' \ (1, Pa\-), Figure 1 (a-) Figure 2 Figure 3
Claims (1)
銃構体において、第１〜第５グリッドだけを絶縁支持棒
により外側から支持させ、内部に挿入された第５グリッ
ドと共に大口径化した主レンズを形成する第６グリッド
は、金属製支持部材を介して第４グリッドに支持させた
ことを特徴とする陰極線管電子銃構体。In a cathode ray tube multi-stage focusing electron gun assembly having the first to sixth grids, only the first to fifth grids are supported from the outside by insulated support rods, and together with the fifth grid inserted inside, the main body has a large diameter. A cathode ray tube electron gun assembly characterized in that the sixth grid forming the lens is supported by the fourth grid via a metal support member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60271491A JPH0731985B2 (en) | 1985-12-04 | 1985-12-04 | Cathode ray tube electron gun assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60271491A JPH0731985B2 (en) | 1985-12-04 | 1985-12-04 | Cathode ray tube electron gun assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62133647A true JPS62133647A (en) | 1987-06-16 |
| JPH0731985B2 JPH0731985B2 (en) | 1995-04-10 |
Family
ID=17500790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60271491A Expired - Lifetime JPH0731985B2 (en) | 1985-12-04 | 1985-12-04 | Cathode ray tube electron gun assembly |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0731985B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5428715A (en) * | 1991-03-14 | 1995-06-27 | Mitsubishi Denki Kabushiki Kaisha | Three-dimensional figure data generator device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55102158A (en) * | 1979-01-29 | 1980-08-05 | Nec Corp | Electrode assembly of electron gun for cathode ray tube |
| JPS58147942A (en) * | 1982-02-26 | 1983-09-02 | Sony Corp | Electron gun |
-
1985
- 1985-12-04 JP JP60271491A patent/JPH0731985B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55102158A (en) * | 1979-01-29 | 1980-08-05 | Nec Corp | Electrode assembly of electron gun for cathode ray tube |
| JPS58147942A (en) * | 1982-02-26 | 1983-09-02 | Sony Corp | Electron gun |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5428715A (en) * | 1991-03-14 | 1995-06-27 | Mitsubishi Denki Kabushiki Kaisha | Three-dimensional figure data generator device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0731985B2 (en) | 1995-04-10 |
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