JPS59165344A - Electron gun for cathode ray tube - Google Patents

Electron gun for cathode ray tube

Info

Publication number
JPS59165344A
JPS59165344A JP3928483A JP3928483A JPS59165344A JP S59165344 A JPS59165344 A JP S59165344A JP 3928483 A JP3928483 A JP 3928483A JP 3928483 A JP3928483 A JP 3928483A JP S59165344 A JPS59165344 A JP S59165344A
Authority
JP
Japan
Prior art keywords
electron gun
punching
electrode
cathode ray
holes
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
Application number
JP3928483A
Other languages
Japanese (ja)
Inventor
Nobuo Yoshino
吉野 伸夫
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.)
Toshiba Corp
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP3928483A priority Critical patent/JPS59165344A/en
Publication of JPS59165344A publication Critical patent/JPS59165344A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02Manufacture of electrodes or electrode systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)

Abstract

PURPOSE:To simplify the manufacturing process and to enable provision of an electron gun of high quality in a short period of time, by producing a thick plate member with holes by application of punching in the same direction to form the periphery of the member and the holes, i.e., those for the electron beams to pass through. CONSTITUTION:In producing a thick plate member with holes 17d, 18a, first, the member without holes is punched out from a material of predetermined thickness applying the punching in the direction as shown by the arrow 311, 312, namely in the direction away from the main lens. Then, the hole portions 11 for the electron beams to pass through are punched by application of the punching in the same diretion as indicated by the arrow 32, i.e., away from the main lens, with the surface 33 not including the portion where burr 33a is formed by the above first punching taken as the base surface. Thus, the burr 33a produced at the punching of the periphery and the burr 33b produced at the punching of the holes 11 for the electron beams to pass through are adapted to be on the same end, the end to be supported by a dish shaped member with holes in the succeeding process, and because of it, there are formed curved surfaces 34a, 34b of the substantially same curvature on the end to face the main lens. Then, by substantially removing the burrs 33a and 33b by a short period of time of tumbling, the 5th electrode comprising 17b, 17c, and 17d and the 6th electrode comprising 18a and 18b can be provided.

Description

【発明の詳細な説明】 〔発明の技術的背景〕 本発明は陰極線管用電子銃に係り、特に電子ビームを蛍
光体スクリーン上に収束するための主レンズを形成する
電極群に厚肉有孔板部材を使用した陰極線管用電子銃に
関するものである。
[Detailed Description of the Invention] [Technical Background of the Invention] The present invention relates to an electron gun for a cathode ray tube. The present invention relates to a cathode ray tube electron gun using the member.

〔発明の技術的背景とその問題点〕[Technical background of the invention and its problems]

陰極線管の一種であるカラー受像管に内装される電子銃
としては、電子銃を構成する各電極をそれぞれ一体形成
すると共に一列配設された電子ビーム通過孔部を有する
所謂ユニタイズドインライン形電子銃が主流となってい
る。
The electron gun installed in a color picture tube, which is a type of cathode ray tube, is a so-called unitized in-line electron gun, which has each electrode that makes up the electron gun integrally formed and has a row of electron beam passage holes. Guns have become mainstream.

一方電子銃の内装されるネックの径は偏向電力の省エネ
ルギ一対策として次第に細ネック化されている。
On the other hand, the diameter of the neck inside the electron gun is gradually becoming narrower as a measure to save energy in deflection power.

この様な細ネック内に二二タイズドインライン形電子銃
を内装した場合、問題となるのは主レンズを形成する対
設する電極の電子ビーム通過孔部の径であり、従来のよ
うに電極を薄板よりプレス成形により外径及び電子ビー
ム通過孔部を形成したものでは主レンズの径が小さくな
り、電子銃として収束が悪く、かつ蛍光体スクリーン上
に描かれる再生画像のコントラスト、明るさが悪くなる
−この対策として主レンズをでき得るだけ大きくするた
めに主レンズを形成する電極群の特に主レンズに近い部
分を厚肉例えば1簡位の部材をプレスなどにより、その
外径及び電子ビーム通過孔部を形成し、電子ビーム通過
孔部の径を出来得る限り大とすると共11大にすること
による各電子レンズを形成する電界歪の歪を防止する技
術が開発されている。
When a 22ized in-line electron gun is installed inside such a narrow neck, the problem is the diameter of the electron beam passage hole in the opposing electrode that forms the main lens. If the outer diameter and electron beam passage hole are formed by press molding from a thin plate, the diameter of the main lens will be small, resulting in poor convergence as an electron gun, and the contrast and brightness of the reproduced image drawn on the phosphor screen will be poor. - As a countermeasure to this problem, in order to make the main lens as large as possible, the part of the electrode group that forms the main lens, especially near the main lens, is thickened, for example by pressing a one-piece member, so that its outer diameter and the electron beam can be reduced. A technique has been developed to prevent the distortion of the electric field that forms each electron lens by forming a passage hole and making the diameter of the electron beam passage hole as large as possible and 11 in diameter.

次にこのような厚肉の部材から成形された電極素子を使
用した電子銃の一例を第1図により説明する。
Next, an example of an electron gun using an electrode element formed from such a thick member will be explained with reference to FIG.

即ち、電子銃(1)はヒータを内装する陰極(2)、第
1電極(3)、第2電極(4)、第3電極(5)、第4
電極(6)、第5[極(7)、第6電極(81をそれぞ
れ所定間隔をもつように絶縁支持棒(91に植設した構
造を有し、第2電極(4)と第4電極(6)を接続し、
数100vの電圧を印加し、第3電極(5)と第5グリ
ツド(7)を接続し数1000 Vの電圧を印加し、第
6電極(81に陽極電圧を印加することにより、第3電
極(5)、第4電極(6)、第7電極で補助レンズ、第
511極(7)と第6電極(8)によりパイポテンシャ
ル形の主レンズを形成するようなされている。
That is, the electron gun (1) has a cathode (2) containing a heater, a first electrode (3), a second electrode (4), a third electrode (5), and a fourth electrode.
It has a structure in which the electrode (6), the fifth electrode (7), and the sixth electrode (81) are implanted in the insulating support rod (91) at predetermined intervals, and the second electrode (4) and the fourth electrode Connect (6),
By applying a voltage of several hundred volts, connecting the third electrode (5) and the fifth grid (7) and applying a voltage of several thousand volts, and applying an anode voltage to the sixth electrode (81), the third electrode (81) is connected. (5), the fourth electrode (6), and the seventh electrode form an auxiliary lens, and the 511th electrode (7) and the sixth electrode (8) form a pi-potential type main lens.

この様な電子銃(1)において例えば第5電極(7)は
3個の皿状ゼ孔電極素子(7a)(7b)(7c)(7
d)とこの電極素子(7d)の開放端縁部で支持される
厚肉有孔板状部材(7d)からなり、第6電極(8)は
厚肉有孔板状部材(8a)とこの厚肉有孔板状部材(8
a)を開放端縁部で支持する皿状有孔電極(8b)とか
ら構成されている。
In such an electron gun (1), for example, the fifth electrode (7) is composed of three dish-shaped hole electrode elements (7a), (7b), (7c), and (7).
d) and a thick-walled perforated plate-like member (7d) supported by the open end edge of this electrode element (7d), and the sixth electrode (8) consists of the thick-walled perforated plate-like member (8a) and this Thick-walled perforated plate member (8
a) and a dish-shaped perforated electrode (8b) supporting the electrode at its open end.

この厚肉有孔板状部材(7d)(8a)は第2図に示す
ように3個の一列配設された電子ビーム通過孔部(nR
) (nG ) (IIB )がプレスなどで穿設され
ているが、その形成方法によって、電子ビーム通過孔部
(IIR)(IIG)(IIB)間の壁部(12t) 
(12t)を極めて薄く′形成することによし大きな主
レンズを形成することが可能となるし、この電子ビーム
通過孔部(IIR) (IIG ) (IIB )近傍
に形成される電界分布を互いに干渉することがないよう
にすることができるので大口径な主レンズを有する品位
の良好な電子銃を得ることが可能である。
These thick-walled perforated plate-like members (7d) (8a) have three electron beam passage holes (nR
) (nG) (IIB) are bored by a press or the like, but depending on the method of formation, the wall (12t) between the electron beam passing holes (IIR) (IIG) (IIB)
By forming (12t) extremely thin, it is possible to form a large main lens, and the electric field distributions formed near the electron beam passage holes (IIR) (IIG) (IIB) interfere with each other. Therefore, it is possible to obtain a high-quality electron gun having a large-diameter main lens.

然るに従来この厚肉有孔板状部材(7d)(8a)の製
造方法としては所定の板厚の材料を先ず矢印(z1+)
(21t)方向に打ち抜き、次に電子ビーム通過孔部I
を矢印(26方向に打ち抜く方法が行なわれている。こ
れは外形の打ち抜き時にかえり(Z(a)が出るため、
次の電子ビーム通過孔部Iの打ち抜きが困難なためであ
るこのため逆方向にかえり(23a)(23b ’)が
できるし、またコーナ曲面(24a ) (24b )
cD出方も異なるため、このかえり(231L ) (
23b ’)を除去し、コーナ曲面を形成するため15
〜20時間のタンプリングを行ない、第4図に示すよう
にかえり(23a ) (Z3b )を除去すると共に
主レンズを形成するに必要なR= 0.3−以上のコー
ナ曲面(25a ) (25b )としているのが現状
である。
However, in the conventional manufacturing method of these thick-walled perforated plate-like members (7d) (8a), a material of a predetermined thickness is first
(21t) direction, then electron beam passing hole I
A method of punching out in the arrow (26 directions) is used.
This is because it is difficult to punch out the next electron beam passage hole I. Therefore, burrs (23a) (23b') are formed in the opposite direction, and corner curved surfaces (24a) (24b) are formed.
This burr (231L) (
15 to remove 23b') and form a corner curved surface.
After performing tumpling for ~20 hours, as shown in Fig. 4, the burrs (23a) (Z3b) were removed and the corner curved surfaces (25a) (25b) with R = 0.3 or more necessary to form the main lens were formed. This is the current situation.

然るにこの様な方法では厚肉有孔板状部材(7d)(8
a)の特に製造工程ではタンプリングが長くなるし、ま
た、コーナ曲面(25&) ($b )の曲率も異なっ
てくる問題点がある。
However, in such a method, the thick perforated plate member (7d) (8
Particularly in the manufacturing process of a), the tampling becomes long and the curvature of the corner curved surface (25&) ($b) also differs.

〔発明の目的〕[Purpose of the invention]

本発明は前述した問題点に鑑みなされたものであり、厚
肉有孔板状部材を単時間に品位良く形成した良好な特性
を@有する陰極線管用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-mentioned problems, and it is an object of the present invention to provide an electron gun for a cathode ray tube, which has good characteristics and can form a thick-walled perforated plate-like member in a single time with good quality.

〔発明の概要〕[Summary of the invention]

本発明は電子ビームを蛍光体スクリーン上に収束するた
めの主レンズを形成する電極群を含む複数の電極と、こ
れら複数の電極を支持する絶縁支持棒とを少なくとも具
備し、主電子レンズを形成する少くとも1個の電極が厚
肉有孔板状部材と、この厚肉有孔板状部材を開放端縁部
で支持する皿状有孔支持部材とからなる陰極線管用電子
銃において、厚肉有孔板状部材の外形と孔部との打ち抜
き方向が共に主レンズ側から皿状有孔支持部材方向にな
されていることを特徴とする陰極線管用電子銃であり、
陰極線管がカラー受像管であり、電子銃が一列配設され
た複数の電子ビームを射出するインライン形電子銃であ
ることを実施態様として−る。
The present invention comprises at least a plurality of electrodes including an electrode group forming a main lens for converging an electron beam onto a phosphor screen, and an insulating support rod supporting these plural electrodes to form a main electron lens. In an electron gun for a cathode ray tube, at least one electrode is composed of a thick-walled perforated plate-like member and a dish-like perforated support member that supports the thick-walled perforated plate-like member at an open end edge. An electron gun for a cathode ray tube, characterized in that the outer shape of the perforated plate-like member and the punching direction of the hole are both from the main lens side toward the dish-like perforated support member,
In this embodiment, the cathode ray tube is a color picture tube, and the electron gun is an in-line electron gun that emits a plurality of electron beams arranged in a row.

〔発明の実施例〕[Embodiments of the invention]

陰極線管用電子銃としては第1図とほぼ同様なので図面
及び説明を省略し、また同一符号は同一部を示す。
Since the cathode ray tube electron gun is almost the same as that shown in FIG. 1, drawings and explanations are omitted, and the same reference numerals indicate the same parts.

即ち、本実施例は、厚肉有孔板状部材(17d)(18
a)の形成時に第5図に示すように先ず所定の板厚の材
料を先ず矢印(31s) (31gす駒即ち主レンズ方
向から打ち抜き、次にこの時発生する、かえり(33a
)を含まない面儲を基準にして電子ビーム通過孔部aυ
を同じく矢印(至)方向即ち主レンズ方向から打ち抜き
外径打ち抜き時のかえり(33a)と、笥1子ビーム通
過孔部aυ打ち抜き時のかえ!り(33b)を同一方向
、即ち後工程で皿状有孔支持部材に支持させる方向に設
けることにより、主レンズ側には、はぼ同じ半径の曲面
(34B ) (34b )が形成される。次に第6図
に示すように短時間のタンプリングで、かえり(33a
 ) (33b )をほぼ除去し、第7図に示すように
・・・(17b ) (17c )及び(17d)から
なる第5[極0ηと(18a ) (18b )からな
る第6′WL極錦を形成し、図示しない他の電極と共に
絶縁支持棒(9)に植設し陰極線この様な陰極線管用電
子銃においては、厚肉有孔板状部材(17d ) (1
8a )の外径及び孔部である電子ビーム通過孔部Iを
主レンズ形成方向と同一方向に打ち抜くため、主レンズ
側には必然的にR=0.3瓢以上の曲面が形成されるし
、またかえり(33a)(&3b)も短時間のタンプリ
ングで簡単に除去することが可能となり、従来のような
長時間のタンプリングでかえりをとり更に0.3b以上
の曲面を形成するという工程が不要であり、短時間で棒
めて品位の良好な電子銃構体を有ることができる。
That is, in this example, thick-walled perforated plate-like members (17d) (18
As shown in FIG.
), electron beam passage hole aυ
Similarly, the burr (33a) when punching out the outer diameter from the direction of the arrow (to), that is, the direction of the main lens, and the burr (33a) when punching the first beam passage hole aυ! By providing the ribs (33b) in the same direction, that is, in the direction in which they will be supported by the dish-shaped perforated support member in a subsequent process, curved surfaces (34B) (34b) having approximately the same radius are formed on the main lens side. Next, as shown in Figure 6, by tamping for a short time, the burr (33a
) (33b) is almost removed, and as shown in FIG. In such a cathode ray tube electron gun, a thick perforated plate member (17d) (1
Since the outer diameter of 8a) and the hole I, which is the electron beam passing hole, are punched out in the same direction as the main lens formation direction, a curved surface of R=0.3 or more is inevitably formed on the main lens side. Also, the burrs (33a) (&3b) can be easily removed with a short tampling process, eliminating the need for the conventional process of removing the burrs and forming a curved surface of 0.3b or more. Therefore, an electron gun assembly with good quality can be assembled in a short time.

前述した実施例は主としてカラー受像管用のユニタイズ
ドインライン形電子銃について述にたがこれに限定され
るものではないし、また厚肉有孔板状部材の厚さも例え
ば111IIより厚くても薄くても同様であることは勿
論である。
Although the above-mentioned embodiments mainly relate to a unitized in-line type electron gun for a color picture tube, the invention is not limited thereto, and the thickness of the thick-walled perforated plate member may be thicker or thinner than, for example, 111II. Of course, the same is true.

〔発明の効果〕〔Effect of the invention〕

本発明は厚肉有孔板状部材の外径と孔部即ち電子ビーム
通過孔部を同一方向から打ち抜くという簡単な方法で構
成することにより、工程も簡単であり、かつ短時間に品
位の良好な陰極線管用電子銃を得ることが可能であり、
その工業的価値は極めて大である。
The present invention is constructed by a simple method of punching out the outer diameter of a thick-walled perforated plate member and the hole portion, that is, the electron beam passage hole portion, from the same direction, so that the process is simple and high quality can be achieved in a short time. It is possible to obtain an electron gun for a cathode ray tube,
Its industrial value is extremely large.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は電子管用電子銃の一例を示す説明用側面図、第
2図は第1図の厚肉有孔板状部材を示す斜視図、第3図
及び第4図は従来の厚肉有孔板状部材の製造方法の一例
を示す図であり、第3図は外径及び電子ビーム通過孔部
の打ち抜き後を示す断面図、第4図はタンプリングした
後の状態を示す断面図、第5図乃至第7図は本発明の陰
極線管用電子銃の一実施例を示す図であり、第5図は厚
肉有孔板状部材の外径及び電子ビーム通過孔部を同一方
向(打ち抜いた状態を示す断面図、第6図は短時間のタ
ンプリング後の状態を示す断面図、第7図は陰極線管用
電子銃の要部断面図である。 7・・・第5グリツド 7a% 7b% 7Ct 8b 、・・皿状電極素子7
L8a・・・有孔板状電極部材 8・・・第6グリツド 9・・・絶縁支持棒 11111R111G、 IIB・・・電子ビーム通過
孔部211.21!、311.31.・・・外径打ち抜
き方向22.32・・・電子ビーム通過孔部打ち抜き方
向13a %23b 133a 、 :(3b ・・・
かえり24a、 24b% 25&、25b、 34&
、 34b ・・・曲面代理人弁理士 井 上 −男 第  1  図 第  2  図
FIG. 1 is an explanatory side view showing an example of an electron gun for an electron tube, FIG. 2 is a perspective view showing the thick-walled perforated plate member of FIG. 1, and FIGS. 3 and 4 are conventional thick-walled perforated plate members. 3 is a cross-sectional view showing the outer diameter and the electron beam passage hole after punching, FIG. 4 is a cross-sectional view showing the state after tampling, and FIG. 5 to 7 are diagrams showing an embodiment of the electron gun for cathode ray tubes of the present invention, and FIG. FIG. 6 is a cross-sectional view showing the state after short-time tampling, and FIG. 7 is a cross-sectional view of the main part of the cathode ray tube electron gun. 7...Fifth grid 7a% 7b% 7Ct 8b,... dish-shaped electrode element 7
L8a... Perforated plate-shaped electrode member 8... Sixth grid 9... Insulating support rod 11111R111G, IIB... Electron beam passage hole portion 211.21! , 311.31. ...Outer diameter punching direction 22.32...Electron beam passing hole punching direction 13a %23b 133a, :(3b...
Return 24a, 24b% 25&, 25b, 34&
, 34b...Curved surface attorney Patent attorney Inoue-O Figure 1 Figure 2

Claims (1)

【特許請求の範囲】[Claims] (1)  電子ビームを蛍光体スクリーン上に収束する
だめの主レンズを形成する電極群を含む複数の電極と、
これら複数の電極を支持する絶縁支持棒とを少なくとも
具備し、前記主電子レンズを形成する少くとも1個の電
極が厚肉有孔板状部材と、この厚肉有孔板状部材を開放
端縁部で支持する皿状有孔支持部材とからなる陰極線管
用電子銃において、前記厚肉有孔板状部材の外形と孔部
の打ち抜き方向が共に前記主レンズ側から前記皿状有孔
支持部材方向になされていることを特徴とする陰極線管
用電子銃。 12)陰極線管がカラー受像管であり、電子銃が一列配
設された複数の電子ビームを射出するインライン形電子
銃であることを特徴とする特許請求の範囲第1項記載の
陰極線管用電子銃。
(1) a plurality of electrodes including an electrode group forming a main lens for focusing an electron beam onto a phosphor screen;
an insulating support rod supporting the plurality of electrodes, and at least one electrode forming the main electron lens has a thick-walled perforated plate-like member and an open end of the thick-walled perforated plate-like member. In a cathode ray tube electron gun comprising a dish-shaped perforated support member supported at an edge, the outer shape of the thick-walled perforated plate-like member and the punching direction of the hole are both from the main lens side to the dish-shaped perforated support member. An electron gun for cathode ray tubes, characterized in that it is made in the direction of 12) An electron gun for a cathode ray tube according to claim 1, wherein the cathode ray tube is a color picture tube, and the electron gun is an in-line electron gun that emits a plurality of electron beams arranged in a row. .
JP3928483A 1983-03-11 1983-03-11 Electron gun for cathode ray tube Pending JPS59165344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3928483A JPS59165344A (en) 1983-03-11 1983-03-11 Electron gun for cathode ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3928483A JPS59165344A (en) 1983-03-11 1983-03-11 Electron gun for cathode ray tube

Publications (1)

Publication Number Publication Date
JPS59165344A true JPS59165344A (en) 1984-09-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP3928483A Pending JPS59165344A (en) 1983-03-11 1983-03-11 Electron gun for cathode ray tube

Country Status (1)

Country Link
JP (1) JPS59165344A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000009614A (en) * 1998-07-27 2000-02-15 구자홍 Electrode structure of electron gun for color cathode ray tube and its production method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5711451A (en) * 1980-06-24 1982-01-21 Toshiba Corp Manufacture of electrode element

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5711451A (en) * 1980-06-24 1982-01-21 Toshiba Corp Manufacture of electrode element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20000009614A (en) * 1998-07-27 2000-02-15 구자홍 Electrode structure of electron gun for color cathode ray tube and its production method

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