JPS62249337A - Cathode-ray display device - Google Patents
Cathode-ray display deviceInfo
- Publication number
- JPS62249337A JPS62249337A JP9386586A JP9386586A JPS62249337A JP S62249337 A JPS62249337 A JP S62249337A JP 9386586 A JP9386586 A JP 9386586A JP 9386586 A JP9386586 A JP 9386586A JP S62249337 A JPS62249337 A JP S62249337A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- linear cathode
- cathode
- groove
- display device
- 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
- 230000005684 electric field Effects 0.000 claims description 20
- 230000000694 effects Effects 0.000 description 5
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 238000003754 machining Methods 0.000 description 2
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、線状カソードを備えた陰極線表示装置に関
し、詳しくはその電子流を集束する電極構造に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cathode ray display device equipped with a linear cathode, and more particularly to an electrode structure for concentrating an electron flow.
第５図は、例えば特開昭６０−１４９２７２号公報に示
されている従来の陰極線表示装置において、線状カソー
ドから放出された電子流を集束する電極構造を示す斜視
図である。FIG. 5 is a perspective view showing an electrode structure for focusing an electron flow emitted from a linear cathode in a conventional cathode ray display device disclosed in, for example, Japanese Patent Laid-Open No. 60-149272.
図において、（１）は平面電極、（２）は線状カソード
、（３）は線状カソード（２）から放出された電子を集
束する静電レンズ系を形成するすきま（８ａ）を有する
集束電極、（４）は陽極、（５）は蛍光体で、パネルガ
ラス（６）の内面に被着されており、陽極（５）を通っ
て入射する電子ビームにより発光する。In the figure, (1) is a planar electrode, (2) is a linear cathode, and (3) is a focusing lens having a gap (8a) forming an electrostatic lens system that focuses electrons emitted from the linear cathode (2). An electrode (4) is an anode, and (5) is a phosphor, which is coated on the inner surface of the panel glass (6) and emits light by an electron beam incident through the anode (5).
第６図はこの従来例の側断面図で、その電界分布と電子
流の軌道とを併せて示した図である。図中の破線ａは、
この電極構造で形成される電界分布を示し、実線すはこ
の電界分布にしたがって運動する電子の軌跡を示してい
る。FIG. 6 is a side sectional view of this conventional example, which also shows the electric field distribution and the trajectory of the electron flow. The broken line a in the figure is
The electric field distribution formed by this electrode structure is shown, and the solid line shows the trajectory of electrons moving according to this electric field distribution.
つぎに動作について説明する。。Next, the operation will be explained. .
集束電極（３）にある電位を与えると、陽極（４）と集
束電極（３）との間に形成される平行電界が、集束電極
（３）のすきま（８ａ）から線状カソード（２）の方向
にしみ出し、線状カソード（２）と集束電極（３）の近
傍で半円筒形の電界が形成され、この電界により電子流
を集束させる静電レンズ系が形成される。したがって、
線状カソード（２）から陽極（４）に向って放出された
電子は、静電レンズ系により集束されながら加速され、
陽極（４） ｋで集束された線状カソード（２）の像が
形成され、これによって蛍光体（５）が発光する０
〔発明が解決しようとする問題点〕
従来の陰極線表示装置では、線状カソード（２）から放
出された電子を集束する静電レンズ系を形成するための
集束電極（３）を備えており、その静電レンズ系の性能
が、電極の精度に大きく依存するために形状、構造に工
夫を要し、そのために陰極線表示装置の構造が複雑にな
りこれに伴って高価になるという問題点があった。When a certain potential is applied to the focusing electrode (3), a parallel electric field is formed between the anode (4) and the focusing electrode (3), and the linear cathode (2) is generated from the gap (8a) of the focusing electrode (3). A semi-cylindrical electric field is formed in the vicinity of the linear cathode (2) and the focusing electrode (3), and this electric field forms an electrostatic lens system that focuses the electron flow. therefore,
Electrons emitted from the linear cathode (2) toward the anode (4) are focused and accelerated by an electrostatic lens system.
An image of the linear cathode (2) focused by the anode (4) k is formed, which causes the phosphor (5) to emit light. [Problems to be solved by the invention] In conventional cathode ray display devices, It is equipped with a focusing electrode (3) to form an electrostatic lens system that focuses the electrons emitted from the shaped cathode (2). The problem is that the shape and structure of the cathode ray display device has to be modified, which makes the structure of the cathode ray display device complicated and, accordingly, expensive.
この発明はと記のような問題点を解消するためになされ
たもので、電極構造が簡単であって、必要な静電レンズ
系の性能が高精度の加工を要せずして得られる安価な陰
極線表示装置を得ることを目的とする。This invention was made in order to solve the problems mentioned above.The electrode structure is simple, and the necessary performance of the electrostatic lens system can be obtained without requiring high-precision machining. The purpose is to obtain a cathode ray display device.
［問題点を解決するための手段］
この発明に係る陰極線表示装置は、平面電極の線状カソ
ードに対向する位置に、所定の断面形状の溝状に形成さ
れている溝状電極を備えたものである。[Means for Solving the Problems] A cathode ray display device according to the present invention includes a groove-like electrode formed in a groove-like shape with a predetermined cross-sectional shape at a position facing a linear cathode of a flat electrode. It is.
この発明における平面電極面に形成された溝状電極は、
平面電極と陽極との間に形成される平行電界を線状カソ
ードの近傍で、当該線状カソードを中心とする半円筒形
の電界に変形させ、線状カソードから放出された電子を
集束する静電レンズ系を形成する。The groove-shaped electrode formed on the plane electrode surface in this invention is
A static electric field that transforms the parallel electric field formed between the planar electrode and the anode into a semi-cylindrical electric field centered on the linear cathode in the vicinity of the linear cathode, and focuses the electrons emitted from the linear cathode. Forms an electric lens system.
〔発明の実施例］ 以下、この発明の一実施例を図について説明する０ 第１図は、この発明の一実施例の斜視図である。[Embodiments of the invention] Hereinafter, one embodiment of the present invention will be explained with reference to the drawings. FIG. 1 is a perspective view of an embodiment of the present invention.
図において、（７）は平面電極（１）の線状カソード（
２）と１に
対向する位置に形成されたＶ字状の溝電極で、こ△
の実施例では、平面電極（１）と一体に形成されてお４
′Ｆ：
す、線状カソード（２）は、この溝電極（７）の開口部
のへ
近傍に位置するように配設されている。In the figure, (7) is the linear cathode (
2) is a V-shaped groove electrode formed at a position opposite to 1. In this embodiment, 4 is formed integrally with the flat electrode (1).
'F: The linear cathode (2) is placed near the opening of the groove electrode (7).
第２図はこの実施例の側断面図で、その電界分布と電子
流の軌道とを示した図で、図中、破線Ｃは、電界分布を
、実線ｄはこの電界分布にしたがって運動する電子の軌
跡を示している。FIG. 2 is a side sectional view of this embodiment, showing the electric field distribution and the trajectory of the electron flow. In the figure, the broken line C represents the electric field distribution, and the solid line d represents the electrons moving according to the electric field distribution It shows the trajectory of
つぎに動作について説明する。Next, the operation will be explained.
溝状電極（７）が形成されている平面電極（１）にある
電位を与えると、陽極（４）と平面電極（１）と間に形
成へ
される平行電界が、溝状電ｆａｉ （７）内に入りこん
で曲がり、線状カソード（２）の近傍で、線状カソード
（２）を中心とした半円筒形の電界が形成され、この電
界により電子流を集束させる作用を有する静電レンズ系
が形成されろ。したがって、線状カソード（，２）から
陽極に向って放出された電子は、この静電レンズ系によ
り集束されながら加速され、陽極（４）上に線状カソー
ド（２）の像が形成され、これ■こよって蛍光体（５）
が発光する。When a certain potential is applied to the plane electrode (1) on which the groove electrode (7) is formed, a parallel electric field is formed between the anode (4) and the plane electrode (1), and the groove electric fai (7 ), and a semi-cylindrical electric field centered on the linear cathode (2) is formed near the linear cathode (2), and this electric field has the effect of focusing the electron flow. A system will be formed. Therefore, the electrons emitted from the linear cathode (2) toward the anode are focused and accelerated by this electrostatic lens system, and an image of the linear cathode (2) is formed on the anode (4). This is the phosphor (5)
emits light.
このように、この実施例は、平面電極（１）の面とにＶ
字形の溝状電極（７）を形成するだけで、従来、必要で
あった集束電極を設けることなく集束作用を有する静電
レンズ系を形成することができるので、電極構造が簡単
となり、かつ、Ｖ字形の溝状電極（７）の加工精度は、
高精度であることを要しないので、安価な陰極線表示装
置が得られる。In this way, in this embodiment, V
By simply forming the letter-shaped groove-like electrode (7), an electrostatic lens system having a focusing effect can be formed without providing a focusing electrode, which was conventionally required, so the electrode structure becomes simple, and The processing accuracy of the V-shaped groove electrode (7) is
Since high precision is not required, an inexpensive cathode ray display device can be obtained.
なお、と記実施例では、溝状電極（７）の断面形状を、
Ｖ字形の逆三角形としたものを示したが、この形状に限
られるものではなく、例えば、第８図（ａ）に示したよ
うな半円筒状、同図（ｂ）に示したような矩形状または
同図忙）に示したような逆台形状、さらにはこれらを組
合せた複合形状であってもよい０
また、上記実施例では、溝状電極（７）を、平面電極（
１）と一体に構成した例を示したが、第４図に示すよう
に、別の部材で構成し、溝状電極（７）に、平面電極（
１）とは別に、線状カソード（２）から電子放出が安定
に行なわれる電位を印加し、同時に、線状カソード（２
）を中心とする半円筒形電界が形成されるようにしても
よい。In addition, in the embodiment described above, the cross-sectional shape of the groove-shaped electrode (7) is as follows.
Although a V-shaped inverted triangle is shown, the shape is not limited to this, for example, a semi-cylindrical shape as shown in FIG. 8(a), a rectangular shape as shown in FIG. 8(b), etc. In addition, in the above embodiment, the groove-shaped electrode (7) may be replaced with a flat electrode (
1), but as shown in FIG.
Separately from step 1), a potential at which electron emission is stably performed from the linear cathode (2) is applied, and at the same time, the linear cathode (2)
) may be formed such that a semi-cylindrical electric field is formed.
〔発明の効果］
以上のように、この発明によれば、平面電極の線状カソ
ードと対向する位置に、所定の断面形状の溝状１極を形
成し、上記線状カソード近傍の電界を当該線状カソード
を中心とする半円筒形電界を形成するようにしたので、
電極の構造が簡単となり、かつ、高精度の加工を要する
ことなく必要な精度の収束作用を有する安価な陰極線表
示装置が得られる効果がある。[Effects of the Invention] As described above, according to the present invention, a groove-shaped single pole having a predetermined cross-sectional shape is formed at a position facing the linear cathode of the planar electrode, and the electric field near the linear cathode is Since we created a semi-cylindrical electric field centered around the linear cathode,
This has the effect of simplifying the structure of the electrodes and providing an inexpensive cathode ray display device that has the necessary precision of convergence without requiring high-precision machining.
第１図は、この発明の一実施例の斜視図、第２図はこの
実施例の動作を説明するための側断面図、第８図（ａｌ
〜（Ｃ）はそれぞれこの発明の要部である溝状電極の他
の実施例を示す斜視図、第４図はこの発明の要部である
溝状電極の他の実施例を示す側断面図、第５図は従来の
陰極線表示装置の斜視図、第６図はその動作を説明する
ための側断面図である。
（１）・・・平面電極、（２）・・・線状カソード、（
４）・陽極、（５）・・・蛍光体、（７）・・・溝状電
極。
なお、各図中、同一符号は同一または相当部分を示す。FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a side sectional view for explaining the operation of this embodiment, and FIG.
~(C) are perspective views showing other embodiments of the groove-shaped electrode, which are the main part of this invention, and FIG. 4 is a side sectional view showing another embodiment of the groove-shaped electrode, which is the main part of this invention. , FIG. 5 is a perspective view of a conventional cathode ray display device, and FIG. 6 is a side sectional view for explaining its operation. (1)... Planar electrode, (2)... Linear cathode, (
4) Anode, (5) Fluorescent substance, (7) Groove electrode. In each figure, the same reference numerals indicate the same or corresponding parts.
Claims (4)
る線状カソードと、上記平面電極面との間で平行電界を
形成し上記線状カソードから放出された電子流を集束す
る陽極と、上記平面電極の上記線状カソードと対向する
位置に設けられ、上記線状カソードを中心とする半円筒
形の電界を形成する溝状電極とを備えた陰極線表示装置
。(1) An anode that forms a parallel electric field between a plane electrode, a linear cathode arranged parallel to the plane electrode, and the plane electrode surface, and focuses the electron flow emitted from the linear cathode. and a groove-shaped electrode that is provided at a position facing the linear cathode of the planar electrode and forms a semi-cylindrical electric field centered on the linear cathode.
もしくは矩形状であり、この溝状電極の開口部近傍に線
状カソードが配設されてなる特許請求の範囲第１項記載
の陰極線表示装置。(2) The groove-shaped electrode has a cross-sectional shape of an inverted triangle, a semicircle, an inverted trapezoid, or a rectangle, and a linear cathode is disposed near the opening of the groove-shaped electrode. cathode ray display device.
許請求の範囲第１項記載の陰極線表示装置。(3) A cathode ray display device according to claim 1, wherein the plane electrode and the groove-shaped electrode are integrally formed.
、異なる電圧が印加されるように構成されてなる特許請
求の範囲第１項記載の陰極線表示装置。(4) A cathode ray display device according to claim 1, wherein the plane electrode and the groove electrode are electrically insulated and configured to apply different voltages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61093865A JPH0773036B2 (en) | 1986-04-23 | 1986-04-23 | Cathode ray display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61093865A JPH0773036B2 (en) | 1986-04-23 | 1986-04-23 | Cathode ray display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62249337A true JPS62249337A (en) | 1987-10-30 |
| JPH0773036B2 JPH0773036B2 (en) | 1995-08-02 |
Family
ID=14094339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61093865A Expired - Lifetime JPH0773036B2 (en) | 1986-04-23 | 1986-04-23 | Cathode ray display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0773036B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54143063A (en) * | 1978-04-28 | 1979-11-07 | Matsushita Electric Ind Co Ltd | Electron source for picture display |
| JPS5533734A (en) * | 1978-08-30 | 1980-03-10 | Matsushita Electric Ind Co Ltd | Image display equipment |
-
1986
- 1986-04-23 JP JP61093865A patent/JPH0773036B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54143063A (en) * | 1978-04-28 | 1979-11-07 | Matsushita Electric Ind Co Ltd | Electron source for picture display |
| JPS5533734A (en) * | 1978-08-30 | 1980-03-10 | Matsushita Electric Ind Co Ltd | Image display equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0773036B2 (en) | 1995-08-02 |
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