JPH0680579B2 - Electron gun - Google Patents

Electron gun

Info

Publication number
JPH0680579B2
JPH0680579B2 JP8262486A JP8262486A JPH0680579B2 JP H0680579 B2 JPH0680579 B2 JP H0680579B2 JP 8262486 A JP8262486 A JP 8262486A JP 8262486 A JP8262486 A JP 8262486A JP H0680579 B2 JPH0680579 B2 JP H0680579B2
Authority
JP
Japan
Prior art keywords
electrode
electron beam
quadrupole
electron gun
hole
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
Application number
JP8262486A
Other languages
Japanese (ja)
Other versions
JPS62237642A (en
Inventor
律雄 石田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8262486A priority Critical patent/JPH0680579B2/en
Priority to DE8787302872T priority patent/DE3775253D1/en
Priority to EP87302872A priority patent/EP0241218B1/en
Priority to KR1019870003185A priority patent/KR900006173B1/en
Publication of JPS62237642A publication Critical patent/JPS62237642A/en
Priority to US07/295,883 priority patent/US4886999A/en
Publication of JPH0680579B2 publication Critical patent/JPH0680579B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、電子ビームが受ける偏向収差を補正するた
めの四極電極を備えた電子銃に関するものである。
Description: TECHNICAL FIELD The present invention relates to an electron gun including a quadrupole electrode for correcting a deflection aberration received by an electron beam.

〔従来の技術〕[Conventional technology]

セルフコンバーゼンス形の偏向ヨークを有するカラー陰
極線管では、偏向磁界によって電子ビームが変形を受け
て、蛍光面の周縁部分のスポット像が長楕円形になると
いう偏向収差はよく知られている。
In a color cathode ray tube having a self-convergence type deflection yoke, a deflection aberration is well known in which an electron beam is deformed by a deflection magnetic field and a spot image of a peripheral portion of a phosphor screen becomes an elliptical shape.

このような偏向収差の解消手段として、電子銃内に四極
電極を配置して、静電的に電子ビームの変形を補正する
ようになした電子銃が提案されている。
As a means for eliminating such deflection aberration, an electron gun has been proposed in which a quadrupole electrode is arranged in the electron gun to electrostatically correct the deformation of the electron beam.

第5図および第6図は、それぞれ従来の四極電極を示す
一部破断拡大斜視図である。
5 and 6 are partially cutaway enlarged perspective views showing a conventional quadrupole electrode.

第5図に示す従来の四極電極(30)は、同軸に配設され
た2つの円筒電極(11),(12)のうち、内側の円筒電
極(12)に互いに径方向で対向させて2つの透孔(12
a),(12b)を設け、上記2つの円筒電極(11),(1
2)の間に形成される電界が、上記2つの透孔(12a),
(12b)を通って内側の円筒電極(12)内の空間に入り
込んで四極レンズを形成するように構成されている。
The conventional quadrupole electrode (30) shown in FIG. 5 has two cylindrical electrodes (11) and (12) which are coaxially arranged and which are opposed to each other in the radial direction to the inner cylindrical electrode (12). Two through holes (12
a) and (12b) are provided, and the two cylindrical electrodes (11) and (1
The electric field formed between 2) causes the above two through holes (12a),
The quadrupole lens is formed by passing through (12b) and entering the space inside the inner cylindrical electrode (12).

また、第6図に示す従来の四極電極は、インライン形の
電子銃に適用したものであって、同一面内の一線に並べ
られた3つの円筒電極(13),(14),(15)それぞれ
の上下に対向する面に互いに径方向に対向させて計6つ
の透孔(13a),(13b)、(14a),(14b)、(15
a),(15b)を設け、これら透孔(13a)〜(15b)の外
側に互いに対向して配置された2枚の平行板電極(1
6),(17)と、上記3つの円筒電極(13),(14),
(15)の間に形成される電界が、上記6つの透孔(13
a)〜(15b)を通って四極レンズを形成するように構成
されている。
The conventional quadrupole electrode shown in FIG. 6 is applied to an in-line type electron gun and has three cylindrical electrodes (13), (14), (15) arranged in a line in the same plane. There are a total of six through holes (13a), (13b), (14a), (14b), (15) that are opposed to each other in the upper and lower directions in the radial direction.
a) and (15b) are provided, and two parallel plate electrodes (1) are arranged outside the through holes (13a) to (15b) so as to face each other.
6), (17) and the above three cylindrical electrodes (13), (14),
The electric field formed between (15) causes the above-mentioned six through holes (13
It is configured to form a quadrupole lens through a) to (15b).

しかし、上記のような構造の従来の四極電極において
は、各電極の一体化がむずかしく、また、構造上、組立
作業が複雑なものになるという問題点があった。
However, in the conventional quadrupole electrode having the above-mentioned structure, there is a problem that it is difficult to integrate the respective electrodes and the assembly work is complicated due to the structure.

〔発明が解決しようとする問題点〕[Problems to be solved by the invention]

上記のような問題点を解消するための構成として、第2
図に示したような一体化構造の四極電極が考えられる。
即ち、第2図に示す四極電極(30)は、第1の電極
(5)に形成した電子ビームが通る円形の透孔(5a)の
周縁部分を切起して、径方向で対向する一対の円弧状の
水平電極片(18a),(18b)を形成する一方、第2の電
極(6)に形成した電子ビームが通る円形の透孔(6a)
の周縁部分を切起して、径方向で対向する一対の円弧状
の垂直電極片(19a),(19b)を形成し、これら一対の
円弧状の水平電極片(18a),(18b)および一対の円弧
状の垂直電極片(19a),(19b)の組合せにより所定の
四極電極(30)としたものである。
As a configuration for solving the above problems, the second
A quadrupole electrode having an integrated structure as shown in the figure can be considered.
That is, the quadrupole electrode (30) shown in FIG. 2 has a pair of diametrically opposed portions formed by cutting and raising the peripheral portion of the circular through hole (5a) formed in the first electrode (5) through which the electron beam passes. Forming circular arc-shaped horizontal electrode pieces (18a), (18b), while circular through holes (6a) formed in the second electrode (6) and through which the electron beam passes.
A pair of arcuate vertical electrode pieces (19a) and (19b) that are opposed to each other in the radial direction are formed by cutting and raising the peripheral portion of the arcuate horizontal electrode pieces (18a), (18b) and A predetermined quadrupole electrode (30) is formed by combining a pair of arc-shaped vertical electrode pieces (19a) and (19b).

第3図は、上記第2図に示すような一体化構造の四極電
極(30)を備えたインライン形電子銃(40)の縦断面図
であり、同図において、(1)は陰極、(2)はG1電
極、(3)はG2電極、(4)はG3電極、(5),(6)
は上記四極電極(30)を構成する第1および第2の電
極、(7),(8)は集束電極、(9)はコンバーゼン
ス電極で、これら各電極は、それぞれに形成されている
電子ビームが通る円形の透孔(2a),(3a),(5a),
(6a),(7a),(8a),(9a)が同軸となるように、
それぞれが所定の間隔を置いて配列され、図示していな
いビードガラスで一体に固定支持されて、インライン形
電子銃(40)を構成している。
FIG. 3 is a vertical cross-sectional view of an in-line type electron gun (40) provided with the quadrupole electrode (30) having the integrated structure as shown in FIG. 2, in which (1) is a cathode and ( 2) is G1 electrode, (3) is G2 electrode, (4) is G3 electrode, (5), (6)
Are the first and second electrodes that compose the quadrupole electrode (30), (7) and (8) are focusing electrodes, and (9) is a convergence electrode. These electrodes are electron beams formed respectively. Circular through holes (2a), (3a), (5a),
Make (6a), (7a), (8a), (9a) coaxial,
Each of them is arranged at a predetermined interval and integrally fixed and supported by a bead glass (not shown) to form an in-line type electron gun (40).

第4図は、上記第3図に示すインライン形電子銃(40)
の組立要領を説明する縦断面図であり、上記各電極の透
孔(2a),(3a),(5a),(6a),(7a),(8a)に
マンドレル(10)を挿通させることにより、これら各透
孔(2a),(3a),(5a),(6a),(7a),(8a)を
同軸に位置決めするとともに、各電極の間隔は、図示し
ない板状のスペーサによりそれぞれ所定の間隔に固定さ
れた後、ビードガラスにより固定支持される。
FIG. 4 shows the in-line type electron gun (40) shown in FIG.
FIG. 4 is a vertical cross-sectional view for explaining the assembling procedure of the above, in which the mandrel (10) is inserted through the through holes (2a), (3a), (5a), (6a), (7a), (8a) of the above electrodes. Position the through holes (2a), (3a), (5a), (6a), (7a), (8a) coaxially, and the distance between the electrodes is adjusted by a plate-shaped spacer (not shown). After being fixed at a predetermined interval, they are fixed and supported by bead glass.

しかしながら、上述したような四極電極は、図5や図6
に示すものに比べて、電極構造の一体化が容易であり、
また、電子銃内での組立て作業も簡単であるものの、四
極電極(30)を構成する第1および第2の電極(5),
(6)の透孔(5a),(6a)が円形であるために、切起
しにより形成される電極片(18a),(18b)、(19
a),(19b)を円弧状にする必要があり、プレス成形加
工の場合には、各電極片の寸法精度を高めることが非常
に困難で、コスト高になるという問題が残る。
However, the quadrupole electrode as described above is not shown in FIG.
It is easier to integrate the electrode structure compared to the one shown in
Further, although the assembling work in the electron gun is easy, the first and second electrodes (5) forming the quadrupole electrode (30),
Since the through holes (5a) and (6a) of (6) are circular, the electrode pieces (18a), (18b) and (19) formed by cutting and raising are formed.
It is necessary to make a) and (19b) arc-shaped, and in the case of press molding, it is very difficult to improve the dimensional accuracy of each electrode piece, and there remains a problem of high cost.

この発明は上記のような実情に鑑みてなされたもので、
電極構造の一体化が容易である上に、プレス成形加工の
ような簡単な製造手段を用いて低コストに、かつ、高精
度に製作でき、また、既存のマンドレルをそのまま利用
して容易に組立てることができる電子銃を提供すること
を目的としている。
The present invention has been made in view of the above circumstances,
The electrode structure can be easily integrated, and it can be manufactured at a low cost and with high precision by using a simple manufacturing method such as press molding, and it can be easily assembled by using the existing mandrel as it is. The purpose is to provide an electron gun that can.

〔問題点を解決するための手段〕[Means for solving problems]

この発明に係る電子銃は、陰極から放出された電子を電
子ビームに形成して加速する電極と、この電子ビームを
集束する集束電極と、上記電子ビームが通る空間に電界
を形成して当該電子ビームが受ける偏向収差を補正する
四極電極とを有する電子銃において、上記四極電極は、
上記電子ビームの通る透孔が上記集束電極に形成されて
いる電子ビームの通る円形の透孔に外接する大きさの四
角形に形成されており、かつ、当該透孔となる部分が上
下に切起しされて一対の平板状の垂直電極片が形成され
ている第1の電極と、同じく左右両側に切起しされて一
対の平板状の水平電極片が形成されている第2の電極と
を軸方向に重ね合わせてなることを特徴とする。
The electron gun according to the present invention includes an electrode that forms an electron beam by accelerating electrons emitted from a cathode, a focusing electrode that focuses the electron beam, and an electric field that forms an electric field in a space through which the electron beam passes. In an electron gun having a quadrupole electrode for correcting deflection aberration received by a beam, the quadrupole electrode is
The through hole through which the electron beam passes is formed in a quadrangle having a size circumscribing the circular through hole through which the electron beam passes, which is formed in the focusing electrode, and the portion to be the through hole is vertically cut and raised. And a second electrode having a pair of flat plate-shaped horizontal electrode pieces formed thereon and a second electrode having a pair of flat plate-shaped horizontal electrode pieces similarly cut and raised on both left and right sides. It is characterized by overlapping in the axial direction.

〔作用〕[Action]

この発明によれば、電子ビームが受ける偏向収差を補正
する四極電極を構成する第1および第2の電極における
電子ビームの通る透孔が、集束電極における電子ビーム
の通る円形の透孔に外接する大きさの四角形に形成され
ているために、当該透孔となる部分の切起しにより、垂
直および水平の一対の電極片を形成する際、各電極片は
平板状のものとなり、したがって、プレス成形加工を用
いて低コストに、かつ、高精度に製作することが可能で
ある。また、四極電極における透孔が集束電極における
円形の透孔に外接する大きさの四角形であるから、従来
から使用している既存のマンドレルをそのまま、四極電
極を含む電子銃内の複数の電極の同軸化のための位置決
めに利用して、組立て作業の容易化を図れる。
According to the present invention, the through holes through which the electron beam passes in the first and second electrodes that form the quadrupole electrode that corrects the deflection aberration received by the electron beam circumscribes the circular through hole through which the electron beam passes through the focusing electrode. Since it is formed in a quadrangle of size, when the pair of vertical and horizontal electrode pieces is formed by cutting and raising the portion to be the through hole, each electrode piece becomes a flat plate shape, and therefore the press It is possible to manufacture with high precision at low cost by using molding processing. In addition, since the through-hole in the quadrupole electrode is a quadrangle having a size circumscribing the circular through-hole in the focusing electrode, the existing mandrel which has been conventionally used is used as it is, and the plurality of electrodes in the electron gun including the quadrupole electrode are This can be used for positioning for coaxialization, and the assembly work can be facilitated.

〔実施例〕〔Example〕

以下、この発明の実施例を図面にもとづいて説明する。 Embodiments of the present invention will be described below with reference to the drawings.

第1図は、この発明の一実施例による電子銃内の要部で
ある四極電極を示す一部破断分解斜視図である。同図に
おいて、(30)は四極電極であり、この四極電極(30)
は、第1の電極(5)と第2の電極(6)を、互いに接
触しない程度の間隔を置いて対向配置することにより構
成されている。
FIG. 1 is a partially broken exploded perspective view showing a quadrupole electrode which is a main part in an electron gun according to an embodiment of the present invention. In the figure, (30) is a quadrupole electrode, and this quadrupole electrode (30)
Is configured by arranging the first electrode (5) and the second electrode (6) so as to face each other with a gap that does not contact each other.

上記四極電極(30)を構成する第1の電極(5)および
第2の電極(6)には、それぞれ集束電極(第3図およ
び第4図に示した(7),(8)に相当するもので、第
1図では省略している。)に形成されている電子ビーム
の通る円形の透孔(第3図および第4図に示した(7
a),(8a)に相当するもので、第1図では省略してい
る。)の直径と同じ寸法の正方形、即ち、上記円形の透
孔(7a),(8a)に外接する大きさの四角形で電子ビー
ムの通る3つの透孔(5a)および(6a)がそれぞれ形成
されている。
The first electrode (5) and the second electrode (6) constituting the quadrupole electrode (30) correspond to focusing electrodes ((7) and (8) shown in FIGS. 3 and 4 respectively). The circular through-holes through which the electron beam passes (shown in FIGS. 3 and 4 (7).
It corresponds to a) and (8a) and is omitted in FIG. ) The diameter is the same as the square, that is, the three through holes (5a) and (6a) through which the electron beam passes are formed in a quadrangle having a size circumscribing the above circular through holes (7a) and (8a). ing.

そのうち、第1の電極(5)の透孔(5a)の上下には、
当該透孔(5a)となる部分が上下に切起しされて一対の
平板状の垂直電極片(18c),(18d)が形成されている
一方、第2の電極(6)の透孔(6a)の左右両側には、
当該透孔(6a)となる部分が左右両側に切起しされて一
対の平板状の水平電極片(19c),(19d)が形成されて
おり、このような垂直電極片(18c),(18d)を有する
第1の電極(5)と、水平電極片(19c),(19d)を有
する第2の電極(6)とを、軸方向に互いに接触しない
程度の間隔を置いて対向配置することで、上記四極電極
(30)が構成されている。なお、上記のように構成され
た四極電極(30)を含む複数の電極を備えたインライン
形電子銃の構成およびその組立ては、第3図および第4
図に示すものと同様であるため、ここでは詳細な説明を
省略する。
Above and below the through hole (5a) of the first electrode (5),
A pair of flat plate-shaped vertical electrode pieces (18c) and (18d) are formed by vertically raising and lowering the portion to be the through hole (5a), while the through hole (of the second electrode (6) ( 6a) on both left and right sides,
A pair of flat plate-shaped horizontal electrode pieces (19c) and (19d) are formed by cutting and raising the portions to be the through holes (6a) on both the left and right sides, and such vertical electrode pieces (18c) and (19c) are formed. The first electrode (5) having 18d) and the second electrode (6) having horizontal electrode pieces (19c) and (19d) are arranged so as to be opposed to each other with an interval such that they do not contact each other in the axial direction. Thus, the quadrupole electrode (30) is configured. The construction and assembly of an in-line type electron gun provided with a plurality of electrodes including the quadrupole electrode (30) configured as described above are shown in FIGS.
Since it is similar to that shown in the figure, detailed description thereof is omitted here.

ところで、上記のような構成の四極電極(30)において
は、第1および第2の電極(5),(6)にそれぞれ形
成される透孔(5a),(6a)が集束電極における電子ビ
ームの通る円形の透孔に外接する大きさの四角形に形成
されているために、電子銃の組立時には、従来から使用
している既存のマンドレルをそのまま、四極電極を含む
電子銃内の複数の電極の同軸化のための位置決めに利用
することが可能で、所定の組立て作業を容易に行なうこ
とができる。
By the way, in the quadrupole electrode (30) having the above-described structure, the through holes (5a) and (6a) formed in the first and second electrodes (5) and (6) are the electron beams in the focusing electrode. Since it is formed in a quadrangular shape that circumscribes a circular through hole, the existing mandrel that has been used in the past is used as it is during assembly of the electron gun, and multiple electrodes in the electron gun including the quadrupole electrode are used as they are. It can be used for positioning for coaxialization, and predetermined assembly work can be easily performed.

また、第1および第2の電極(5),(6)に形成の透
孔(5a),(6a)の周縁部の切起しにより、水平および
垂直電極片(18c),(18d)、(19c),(19d)を形成
して四極レンズを構成させるにあたって、上記各透孔
(5a),(6a)が四角形にあるために、各電極片(18
c),(18d)、(19c),(19d)は平板状のものとな
り、プレス成形加工のような簡単な製造手段を用いて低
コストに、かつ、精度よく製造することが可能である。
Further, by cutting and raising the peripheral portions of the through holes (5a) and (6a) formed in the first and second electrodes (5) and (6), horizontal and vertical electrode pieces (18c), (18d), When forming the quadrupole lens by forming (19c) and (19d), since the through holes (5a) and (6a) are square, the electrode pieces (18
c), (18d), (19c), and (19d) are flat plates, and can be manufactured at low cost and with high precision using a simple manufacturing means such as press molding.

なお、上記実施例では、インライン形電子銃について説
明したが、デルタ形電子銃、さらには単電子銃にも適用
可能で、上記実施例と同様な効果を奏する。
Although the in-line type electron gun has been described in the above embodiment, it can be applied to a delta type electron gun and further to a single electron gun, and has the same effect as that of the above embodiment.

〔発明の効果〕〔The invention's effect〕

以上のように、この発明によれば、電子ビームが受ける
偏向収差を補正する四極電極における電子ビームの通る
透孔が、集束電極における電子ビームの通る円形の透孔
に外接する大きさの四角形に形成されているために、第
1および第2の電極の透孔となる部分の切起しにより、
垂直および水平な電極片を形成させる際、各電極片が平
板状のものとなるために、プレス成形加工のような簡単
な製作手段を用いて低コストに、かつ、高精度に製作す
ることができる。また、電子銃の組立てに際しても、従
来から使用している既存のマンドレルをそのまま、四極
電極を含む電子銃内の複数の電極の同軸化のための位置
決めに利用して、組立て作業の容易化を図ることができ
るという効果を奏する。
As described above, according to the present invention, the through hole through which the electron beam passes in the quadrupole electrode that corrects the deflection aberration received by the electron beam is formed into a quadrangle having a size circumscribing the circular through hole through which the electron beam passes through the focusing electrode. Since it is formed, by cutting and raising the portions to be the through holes of the first and second electrodes,
When forming vertical and horizontal electrode pieces, since each electrode piece is flat, it is possible to manufacture it at low cost and with high accuracy using a simple manufacturing means such as press molding. it can. Also, when assembling the electron gun, the existing mandrel which has been used conventionally is used as it is for positioning for coaxializing a plurality of electrodes in the electron gun including the quadrupole electrode, thereby facilitating the assembling work. The effect that it can be achieved is produced.

【図面の簡単な説明】[Brief description of drawings]

第1図はこの発明の一実施例による電子銃の主要構成で
ある四極電極の一部破断分解斜視図、第2図はこの発明
の開発に際して中間案となった四極電極の一部破断分解
斜視図、第3図は第2図の四極電極を備えた電子銃の要
部の縦断面図、第4図は第3図に示す電子銃における各
電極の組立て要領を説明する縦断面図、第5図および第
6図はそれぞれ従来の電子銃における四極電極の構成を
示す一部破断斜視図である。 (5)…第1の電極、(6)…第2の電極、(5a),
(6a)…四角形の透孔、(18c),(18d)…垂直電極
片、(19c),(19d)…水平電極片、(30)…四極電
極。 なお、図中の同一符号は同一または相当部分を示す。
FIG. 1 is a partially broken exploded perspective view of a quadrupole electrode, which is a main structure of an electron gun according to an embodiment of the present invention, and FIG. 2 is a partially broken exploded perspective view of a quadrupole electrode, which is an intermediate plan in developing the present invention. 3 and 4 are vertical cross-sectional views of the main part of the electron gun equipped with the quadrupole electrode of FIG. 2, and FIG. 4 is a vertical cross-sectional view illustrating the procedure for assembling each electrode in the electron gun shown in FIG. 5 and 6 are partially cutaway perspective views showing the structure of the quadrupole electrode in the conventional electron gun. (5) ... first electrode, (6) ... second electrode, (5a),
(6a) ... Square through hole, (18c), (18d) ... Vertical electrode piece, (19c), (19d) ... Horizontal electrode piece, (30) ... Quadrupole electrode. The same reference numerals in the drawings indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】陰極から放出された電子を電子ビームに形
成して加速する電極と、この電子ビームを集束する集束
電極と、上記電子ビームが通る空間に電界を形成して当
該電子ビームが受ける偏向収差を補正する四極電極とを
有する電子銃において、上記四極電極は、上記電子ビー
ムの通る透孔が、上記集束電極に形成されている電子ビ
ームの通る円形の透孔に外接する大きさの四角形に形成
されており、かつ、当該透孔となる部分が上下に切起し
されて一対の平板状の垂直電極片が形成されている第1
の電極と、同じく左右両側に切起しされて一対の平板状
の水平電極片が形成されている第2の電極とを軸方向に
重ね合わせてなることを特徴とする電子銃。
1. An electrode for forming and accelerating electrons emitted from a cathode into an electron beam, a focusing electrode for focusing the electron beam, and an electric field formed in a space through which the electron beam passes to receive the electron beam. In an electron gun having a quadrupole electrode for correcting deflection aberration, the quadrupole electrode has a size such that a through hole through which the electron beam passes is circumscribed to a circular through hole through which the electron beam passes formed in the focusing electrode. The first rectangular electrode is formed in a quadrangle, and a pair of flat plate-shaped vertical electrode pieces is formed by vertically raising and lowering a portion to be the through hole.
Electron gun, which is formed by stacking the above electrode and a second electrode, which is also cut and raised on both left and right sides and on which a pair of flat plate-shaped horizontal electrode pieces is formed, in the axial direction.
JP8262486A 1986-04-03 1986-04-08 Electron gun Expired - Lifetime JPH0680579B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP8262486A JPH0680579B2 (en) 1986-04-08 1986-04-08 Electron gun
DE8787302872T DE3775253D1 (en) 1986-04-03 1987-04-02 CATHODE RAY TUBE.
EP87302872A EP0241218B1 (en) 1986-04-03 1987-04-02 Cathode ray tube apparatus
KR1019870003185A KR900006173B1 (en) 1986-04-03 1987-04-03 Cathode ray tube device
US07/295,883 US4886999A (en) 1986-04-03 1989-01-11 Cathode ray tube apparatus with quadrupole electrode structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8262486A JPH0680579B2 (en) 1986-04-08 1986-04-08 Electron gun

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP5198358A Division JPH0793109B2 (en) 1993-08-10 1993-08-10 Electron gun

Publications (2)

Publication Number Publication Date
JPS62237642A JPS62237642A (en) 1987-10-17
JPH0680579B2 true JPH0680579B2 (en) 1994-10-12

Family

ID=13779605

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8262486A Expired - Lifetime JPH0680579B2 (en) 1986-04-03 1986-04-08 Electron gun

Country Status (1)

Country Link
JP (1) JPH0680579B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0698906B1 (en) 1994-08-23 1999-04-14 Matsushita Electronics Corporation Color picture tube
TW306009B (en) * 1995-09-05 1997-05-21 Matsushita Electron Co Ltd

Also Published As

Publication number Publication date
JPS62237642A (en) 1987-10-17

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