JPS63110537A - Electron source - Google Patents
Electron sourceInfo
- Publication number
- JPS63110537A JPS63110537A JP25603486A JP25603486A JPS63110537A JP S63110537 A JPS63110537 A JP S63110537A JP 25603486 A JP25603486 A JP 25603486A JP 25603486 A JP25603486 A JP 25603486A JP S63110537 A JPS63110537 A JP S63110537A
- Authority
- JP
- Japan
- Prior art keywords
- hot cathode
- linear hot
- electrode
- emitted
- 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.)
- Pending
Links
- 239000012212 insulator Substances 0.000 claims description 4
- 238000010894 electron beam technology Methods 0.000 abstract description 15
- 230000005684 electric field Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 2
- 239000000758 substrate Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は文字2画像等を表示する平板状表示装置に用い
る電子源に関し、特に簡単な電極構成によって、集束さ
れた電子ビームを発生する電子源に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an electron source used in a flat display device for displaying characters, images, etc., and particularly relates to an electron source that generates a focused electron beam with a simple electrode configuration. .
従来の技術
以下図面を参照しながら従来の電子源の一例について説
明する。2. Description of the Related Art An example of a conventional electron source will be described below with reference to the drawings.
第3図、第4図は従来の電子源の要部構成を示すもので
ある。第3図において、絶縁基板1の上に背面電極2が
複数形成されており、背面電極2と交叉する形で線状熱
陰極3が複数本配置され、線状熱陰極3の上部に線状熱
陰極3とほぼ平行に格子状電極4が配置されている。FIGS. 3 and 4 show the main structure of a conventional electron source. In FIG. 3, a plurality of back electrodes 2 are formed on an insulating substrate 1, a plurality of linear hot cathodes 3 are arranged to intersect with the back electrodes 2, and a linear hot cathode 3 is arranged above the linear hot cathodes 3. A grid electrode 4 is arranged substantially parallel to the hot cathode 3.
以上のように構成された電子源について以下その動作に
ついて説明する。The operation of the electron source configured as above will be explained below.
第4図は第2図の構成の横断面図である。第4図におい
て、格子状電極4に線状熱陰極2に対し正の電圧を印加
し、線状熱陰極2を電子を放出し得る温度に加熱し、背
面電極2に陰極に対して負の電圧を印加した状態では、
線状熱陰極の近傍は負電界にあり、電子ビーム6は放出
されない。次に複数ある背面電極のうち1本に正の電圧
を印加すると、正の電圧を印加した部分に対応して、線
状熱陰極の近傍の一部が、陰極から電子を放出し得る電
界となり、電子ビームが放出される。FIG. 4 is a cross-sectional view of the configuration of FIG. 2. In FIG. 4, a positive voltage is applied to the grid electrode 4 with respect to the linear hot cathode 2, the linear hot cathode 2 is heated to a temperature at which it can emit electrons, and a negative voltage is applied to the back electrode 2 with respect to the cathode. With voltage applied,
The vicinity of the linear hot cathode is in a negative electric field, and the electron beam 6 is not emitted. Next, when a positive voltage is applied to one of the multiple back electrodes, a part of the vicinity of the linear hot cathode corresponding to the part to which the positive voltage is applied becomes an electric field that can emit electrons from the cathode. , an electron beam is emitted.
発明が解決しようとする問題点
しかしながら上記のような構成では、陰極から電子か放
出される部分の長さは、主として背面電極の電位で制御
するため、背面電極のピッチに対する、陰極の電子放出
部分の長さを短くするのが困難であり、そのために十分
小さな電子ビームスポット径を得るのが難しく、よシ高
解像度な表示か得られないという問題点を有していた。Problems to be Solved by the Invention However, in the above configuration, the length of the part from which electrons are emitted from the cathode is mainly controlled by the potential of the back electrode. It is difficult to shorten the length of the electron beam, and therefore it is difficult to obtain a sufficiently small electron beam spot diameter, resulting in the problem that only high-resolution display can be obtained.
本発明は従来のものが持つ、以上のような問題点を解消
させ、電子ビームの集束を向上させることが可能な電子
源を提供するものである。The present invention solves the above-mentioned problems of conventional sources and provides an electron source capable of improving electron beam focusing.
問題点を解決するための手段
本発明の電子源は、複数本の線状熱陰極と、線状熱陰極
にほぼ平行に配置した格子状電極とを有し、線状熱陰極
に対し、格子状電極とは反対側に、線状熱陰極と交叉す
る複数本の線状の背面電極と、背面電極とは絶縁物によ
シミ気的に絶縁された面状電極とを配置したという構成
を備えたものである。Means for Solving the Problems The electron source of the present invention has a plurality of linear hot cathodes and a lattice-like electrode arranged approximately parallel to the linear hot cathodes. A configuration in which a plurality of linear back electrodes that intersect with a linear hot cathode are arranged on the opposite side from the linear hot cathode, and a planar electrode that is airtightly insulated from the back electrode by an insulator. It is prepared.
作 用
本発明の上記構成においては、従来と同様に電子ビーム
が放出されるとともに、面状電極に、線状熱陰極に対し
て負の電圧を印加することによって、陰極の電子放出部
分の長さを容易に短くでき、集束された電子ビームの放
出が可能となるものである。Operation In the above structure of the present invention, an electron beam is emitted as in the conventional case, and by applying a negative voltage to the planar electrode with respect to the linear hot cathode, the length of the electron emitting portion of the cathode is reduced. The length can be easily shortened and a focused electron beam can be emitted.
実施例 以下本発明の実施例を図面を参照しなから説明する。Example Embodiments of the present invention will be described below with reference to the drawings.
第1図は本発明の実施例における電子源の要部構成を示
す斜視図である。6は面状電極であシ、面状電極6は背
面電極7を配設するための基板ともなっている。背面電
極7は面状電極6との間に絶縁物8をはさんで形成され
ている。9は線状熱陰極であり、背面電極7とほぼ直交
するように複数本架張されている。電子ビームを取り出
すための格子状電極1oの開孔部10 aは、背面電極
7と対向配置されている。FIG. 1 is a perspective view showing the main structure of an electron source in an embodiment of the present invention. 6 is a planar electrode, and the planar electrode 6 also serves as a substrate on which a back electrode 7 is arranged. The back electrode 7 is formed with an insulator 8 sandwiched between it and the planar electrode 6. Numeral 9 is a linear hot cathode, and a plurality of linear hot cathodes are stretched so as to be substantially orthogonal to the back electrode 7. The opening portion 10a of the grid-like electrode 1o for extracting the electron beam is arranged to face the back electrode 7.
以上のように構成された電子源について第2図を用いて
その動作を説明する。The operation of the electron source configured as above will be explained using FIG. 2.
第2図は第1図の構成の横断面図である。第2図におい
て、格子状電極10に線状熱陰極9に対し正の電圧を印
加し、面状電極6に線状熱陰極9に対し負の電圧を印加
し、線状熱陰極9を電子を放出し得る温度に加熱する。FIG. 2 is a cross-sectional view of the configuration of FIG. 1. In FIG. 2, a positive voltage with respect to the linear hot cathode 9 is applied to the grid electrode 10, a negative voltage with respect to the linear hot cathode 9 is applied to the planar electrode 6, and the linear hot cathode 9 is heated to a temperature that allows it to be released.
以上の状態で、背面電極7に線状熱陰極9に対して負の
電圧を印加した場合は、線状熱陰極9の近傍は負電界に
あり、電子ビーム11は放出されない。次に複数ある背
面電極のうち、1本に正の電圧を印加すると、正の電圧
を印加した部分に対応して、線状熱陰極9の近傍の一部
が、電子を放出し得る電界となシ、電子ビームが放出さ
れる。このとき、面状電極6があたえる電界への影響に
よって、線状熱陰極9から電子が放出される部分の長さ
は、従来の構成を用いた場合よりも短くなる。In the above state, when a negative voltage is applied to the back electrode 7 with respect to the linear hot cathode 9, a negative electric field exists in the vicinity of the linear hot cathode 9, and the electron beam 11 is not emitted. Next, when a positive voltage is applied to one of the plurality of back electrodes, a part of the vicinity of the linear hot cathode 9 forms an electric field capable of emitting electrons, corresponding to the part to which the positive voltage is applied. Yes, an electron beam is emitted. At this time, due to the influence of the planar electrode 6 on the electric field, the length of the portion from which electrons are emitted from the linear hot cathode 9 becomes shorter than when the conventional configuration is used.
発明の効果
以上のように本発明は、背面電極とは電気的に絶縁され
た面状電極を備えることにより、線状熱陰極から電子が
放出される部分の長さを、面状電極に印加する電圧によ
って制御することができるものである。さらに陰極から
電子が放出される部分の長さを短くすることによシ、集
束された電子ビームを取シ出すことができる。Effects of the Invention As described above, the present invention provides a planar electrode that is electrically insulated from the back electrode, so that the length of the portion where electrons are emitted from the linear hot cathode can be applied to the planar electrode. It can be controlled by the voltage applied. Furthermore, by shortening the length of the portion from which electrons are emitted from the cathode, a focused electron beam can be extracted.
第1図は本発明の一実施例における電子源の要部構成を
示す斜視図、第2図は第1図の構成の横断面図、第3図
は従来の電子源の要部構成の一例を示す斜視図、第4図
は第3図の構成の横断面図である。
1・・・・・・絶縁基板、2,7・・川・背面電極、3
,9・・・・・・線状熱陰極、4,10・・・用格子状
電極、5゜11・・・・・・電子ビーム、6・・・・・
・面状電極、8・・・・・・絶縁物。
代理人の氏名 弁理士 中 尾 敏 男 ほか1名第1
図
IO格子仄電極
第2図
第3図
2背面電極FIG. 1 is a perspective view showing the configuration of main parts of an electron source in an embodiment of the present invention, FIG. 2 is a cross-sectional view of the structure shown in FIG. 1, and FIG. 3 is an example of the structure of main parts of a conventional electron source. FIG. 4 is a cross-sectional view of the configuration shown in FIG. 3. 1... Insulating substrate, 2, 7... River/back electrode, 3
, 9... Line hot cathode, 4, 10... Grid electrode, 5゜11... Electron beam, 6...
- Planar electrode, 8... Insulator. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure IO grid back electrode Figure 2 Figure 3 Figure 2 Back electrode
Claims (1)
置した格子状電極とを有するとともに、前記線状熱陰極
に対して前記格子状電極とは反対側に、前記線状熱陰極
と交叉する複数本の線状背面電極と、前記背面電極とは
絶縁物により電気的に絶縁された面状電極とを配置した
ことを特徴とする電子源。It has a plurality of linear hot cathodes and a lattice electrode arranged almost parallel to the linear hot cathode, and the linear hot cathode is arranged on the opposite side of the lattice electrode to the linear hot cathode. 1. An electron source comprising: a plurality of linear back electrodes intersecting a cathode; and a planar electrode electrically insulated from the back electrode by an insulator.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25603486A JPS63110537A (en) | 1986-10-28 | 1986-10-28 | Electron source |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25603486A JPS63110537A (en) | 1986-10-28 | 1986-10-28 | Electron source |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63110537A true JPS63110537A (en) | 1988-05-16 |
Family
ID=17286996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP25603486A Pending JPS63110537A (en) | 1986-10-28 | 1986-10-28 | Electron source |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63110537A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63184238A (en) * | 1987-01-26 | 1988-07-29 | Mitsubishi Electric Corp | Flat type electron emission device |
JPH04206239A (en) * | 1990-11-29 | 1992-07-28 | Matsushita Electric Ind Co Ltd | Electron source |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60112230A (en) * | 1983-11-18 | 1985-06-18 | Matsushita Electric Ind Co Ltd | Matrix electron source |
-
1986
- 1986-10-28 JP JP25603486A patent/JPS63110537A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60112230A (en) * | 1983-11-18 | 1985-06-18 | Matsushita Electric Ind Co Ltd | Matrix electron source |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63184238A (en) * | 1987-01-26 | 1988-07-29 | Mitsubishi Electric Corp | Flat type electron emission device |
JPH04206239A (en) * | 1990-11-29 | 1992-07-28 | Matsushita Electric Ind Co Ltd | Electron source |
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