JPS61264627A - Manufacture of electron gun electrode - Google Patents
Manufacture of electron gun electrodeInfo
- Publication number
- JPS61264627A JPS61264627A JP10584285A JP10584285A JPS61264627A JP S61264627 A JPS61264627 A JP S61264627A JP 10584285 A JP10584285 A JP 10584285A JP 10584285 A JP10584285 A JP 10584285A JP S61264627 A JPS61264627 A JP S61264627A
- Authority
- JP
- Japan
- Prior art keywords
- recess
- electrode
- section
- container
- electron gun
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus 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
- H01J9/02—Manufacture of electrodes or electrode systems
- H01J9/18—Assembling together the component parts of electrode systems
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は電子銃電極の製造方法Ｉこ係り、特にシャドウ
マスク形カラー受像管に装着される３本の電子ビームを
一列に射出するインライン形電子銃の主レンズ部を形成
する電極の製造方法に関する。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a method for manufacturing an electron gun electrode, and particularly to an in-line type electron gun that is attached to a shadow mask type color picture tube and emits three electron beams in a line. The present invention relates to a method of manufacturing an electrode forming the main lens portion of a gun.
従来、前記した種類のカラー受像管用電子銃において、
解像度を改良したものとして、例えば特開昭５７−１０
３２４６号公報ｉこ示すように、対向する主レンズ電極
がそれぞれの対向側Ｉこ周辺リムを有し、この周辺リム
と後退させて形成した開孔形成面との凹所で長円状レン
ズ空間を形成した構造が知られている。Conventionally, in the above-mentioned type of color picture tube electron gun,
For example, Japanese Patent Application Laid-Open No. 57-10
No. 3246 Publication I As shown, the opposing main lens electrodes each have a peripheral rim on the opposing side, and an elliptical lens space is formed in the recess between the peripheral rim and the aperture forming surface formed by retreating. The structure that formed this is known.
この構造においては、前記長円状レンズ空間部に対向す
る電極側の電位が深く浸入し、１つの大口径化したレン
ズが形成でき、球面収差を減少させ得ることから、電子
ビームスポット径を小さくすること−こ対して有効であ
る。In this structure, the potential on the electrode side facing the elliptical lens space penetrates deeply, forming one lens with a large diameter, and reducing spherical aberration, so the electron beam spot diameter can be reduced. - It is effective against this.
しかし、この構造では主レンズ電極部品のプレス加工精
度の重要性および製造コストの問題点ｌこりいては必ず
しも考慮されていない。すなわち、電極部品の加工精度
について述べると、前記対向面側に形成した凹所は大口
径レンズ形成域となり、その長円状の輪郭精度（形状精
度）は螢光面上でのビームスポットの形状と高い相関を
持ち、その加工精度が高いほどビームスポットの形状は
一様性の高いものとなる。このため前記凹所の輪郭精度
を高めるには、従来一般のプレス加工法１こ依存しては
不充分なものとなり、その加工精度のばらつきから、ビ
ームスポット形状の一様性に欠けたものとなり、カラー
受像管解像度のばらつきを招いてしまう。However, this structure does not necessarily take into account the importance of press processing precision of the main lens electrode component and the problem of manufacturing cost. In other words, regarding the processing accuracy of the electrode parts, the recess formed on the opposing surface side becomes a large-diameter lens forming area, and the contour accuracy (shape accuracy) of the ellipse is determined by the shape of the beam spot on the fluorescent surface. The higher the processing precision, the more uniform the beam spot shape will be. Therefore, in order to improve the contour accuracy of the recess, it is insufficient to rely on the conventional press processing method, and due to variations in the processing accuracy, the beam spot shape lacks uniformity. , which leads to variations in color picture tube resolution.
このことを更に第１図によって説明する。第１図は従来
一般ｌこ用いられている前記凹所を有する電極プレス部
品の加工例を示す。まず同図１ａ）ｆこ示すように円板
状のブランク１を打抜く。次憂こ同図（ｂ）に示すよう
に張り出し加工で長円状の輪郭と所定深さを有する凹所
２を形成する。次いで同図（ｃｌに示すように容器状の
所定寸法−こ絞り加工して容器部３を形成する。その後
、同図（ｄ）＃こ示すように前記凹所２の開孔形成面を
打抜いて開孔４を形成し、電極部品を完成させる。This will be further explained with reference to FIG. FIG. 1 shows an example of machining of an electrode press part having the above-mentioned recess, which has been commonly used in the past. First, a disk-shaped blank 1 is punched out as shown in FIGS. 1a) and 1f. Next, as shown in Figure (b), a recess 2 having an elliptical outline and a predetermined depth is formed by overhanging. Next, as shown in FIG. 2 (cl), a container portion 3 is formed by drawing a container to a predetermined size. Thereafter, as shown in FIG. The electrode part is completed by punching out and forming an opening 4.
しかし、かかる加工法では、同図（ｃ）に示すように容
器部３を絞り加工によって形成する際、その加工力から
あらかじめ形成していだ凹所２の輪郭寸法や深さ寸法が
変動する。このため同図（ｂ）においては、凹所２を前
記変動を見込んで形成しておく必要がある。ところが、
絞り加工力は金型内の潤滑状態に依存するところが大き
く、必ずしも安定はしない。このため前記変動に対して
の見込みは平均的なものへの対応になり、一様な輪郭寸
法や凹所深さを得ることに対する効果は十分基こ得られ
ない。However, in such a processing method, when the container portion 3 is formed by drawing as shown in FIG. 3(c), the contour dimensions and depth dimensions of the pre-formed recess 2 vary due to the processing force. Therefore, in FIG. 4B, it is necessary to form the recess 2 in consideration of the above-mentioned fluctuation. However,
The drawing force largely depends on the lubrication state within the mold and is not necessarily stable. For this reason, the expectation for the above-mentioned variations becomes an average response, and the effect of obtaining uniform contour dimensions and recess depths cannot be sufficiently achieved.
本発明の目的は、主レンズ電極のプレス加工精度を向上
させること１こより、カラー受像管の解像度の改良と変
動の防止を図ることができる電子銃電極の製造方法を提
供すること（こある。An object of the present invention is to provide a method for manufacturing an electron gun electrode that can improve the resolution of a color picture tube and prevent fluctuations by improving the press working precision of the main lens electrode.
本発明の一実施例によれば、先端部が推体状（こなるよ
う（こ容器部を成形した後、前記錐体部を容器部内方向
ｌこ反転圧縮して凹所の形状を確保するので、凹所の形
状精度が向上し、かつ安定せしめることができる。According to an embodiment of the present invention, after the container portion is molded, the cone portion is invertedly compressed in the inner direction of the container portion to ensure the shape of the recess. Therefore, the shape accuracy of the recess can be improved and stabilized.
以下、本発明の一実施例を第２図及び第３図により説明
する。第２図は本発明を適用した主レンズ電極の一例を
示す。Ｇ、下部電極１０とＧ、上部電極１１とは一体ｔ
こ形成され、Ｇ４電極１２はシールドカップ１３に固定
されている。前記Ｇ３上部電極１１とへ電極！２とは間
隔ｇをもって対向しており、両電極１１．１２とも対向
面側に水平方向長Ｈ１垂直方向長Ｖの同一寸法からなる
長円状開孔部（凹所）Ｉｌａ、１２ａを有するようｌこ
開孔形成面１１ｂ、°１２ｂがそれぞれ形成されている
。An embodiment of the present invention will be described below with reference to FIGS. 2 and 3. FIG. 2 shows an example of a main lens electrode to which the present invention is applied. G, the lower electrode 10 and G, the upper electrode 11 are integrated.
The G4 electrode 12 is fixed to the shield cup 13. The electrode to the G3 upper electrode 11! The electrodes 11 and 12 face each other with an interval g, and both electrodes 11 and 12 have oval openings (concavities) Ila and 12a having the same dimensions of horizontal length H1 and vertical length V on their opposing surfaces. Opening surfaces 11b and 12b are respectively formed.
またＧ、上部電極１１の長円状開孔１１ａの深さはｌ７
、Ｇ４電極１２の長円状開孔１２ａの深さはｊ。In addition, G, the depth of the oblong hole 11a of the upper electrode 11 is l7
, the depth of the oblong hole 12a of the G4 electrode 12 is j.
と変位しており、ｌ！、＞ｌ！２ｔこ形成されている。The displacement is l! ,>l! 2t is formed.
また前記開孔形成面１１ｂ、１２ｂ＃こはそれぞれ開孔
１ｔｃ、１２ｃが形成されている。Further, apertures 1tc and 12c are formed on the aperture forming surfaces 11b and 12b#, respectively.
次に前記Ｇ３上部電極１１と前記Ｇ４電極１２の加工方
法を第３図によって説明する。まず同図１ａｌｆこ示す
ように円板状のブランク２０＃こ打抜く。次ｌこ同図（
ｂ）に示すように先端部が椎体部２１＃こなるように容
器部２２を絞り加工Ｅこよって形成する。次いで同図（
ｃ）ｊこ示すようｌこ推体部２１を容器部２２内方向ｌ
こ圧縮し、反転させることにより、凹所２３の概略形状
を形成する。その後同図（ｄ）ｆこ示すように所定量の
輪郭寸法と深さを有するようｔこ前記凹所２３を整形加
工し、所定の凹所２４を形成する。Next, a method of processing the G3 upper electrode 11 and the G4 electrode 12 will be explained with reference to FIG. First, as shown in FIG. 1alf, a 20# disk-shaped blank is punched out. Next l This is the same figure (
As shown in b), the container portion 22 is formed by drawing E so that the tip portion overlaps with the vertebral body portion 21#. Next, the same figure (
c) Move the pushing body part 21 inward to the container part 22 as shown.
By compressing and inverting, the general shape of the recess 23 is formed. Thereafter, the recess 23 is shaped to have a predetermined contour size and depth, as shown in FIGS. 2(d) and 3(f), thereby forming a predetermined recess 24.
次ｌこ同図（ｅｌｆこ示すように前記凹所２４の開孔形
成面２５を打抜いて開孔２６を形成し、容器状電極を完
成させる。Next, as shown in this figure, the aperture forming surface 25 of the recess 24 is punched out to form an aperture 26, thereby completing the container-shaped electrode.
このように、容器状電極の外形を形成した後（同図１ｃ
）参照）、凹所２４の形状を完成（同図（ｄｌ参照）さ
せるので、従来の加工法で問題となっていた凹所形状の
変動は生じない。このため成形寸法をあらかじめ見込む
必要がないので、凹所２４のプレス加工精度は向上し、
また安定した寸法が得られる。After forming the outer shape of the container-shaped electrode in this way (FIG. 1c)
), the shape of the recess 24 is completed (see the same figure (dl)), so there is no change in the shape of the recess, which was a problem with conventional processing methods.Therefore, there is no need to estimate the molding dimensions in advance. Therefore, the press processing accuracy of the recess 24 is improved,
Moreover, stable dimensions can be obtained.
以上の説明から明らかなよう条こ、本発明ｔこよれば、
大口径レンズを形成する対向電極の凹所のプレス加工精
度と寸法の安定性が向上するので、カラーブラウン管の
解像度の変動が防止される。As is clear from the above description, according to the present invention,
Since the pressing precision and dimensional stability of the recess of the counter electrode that forms the large-diameter lens are improved, fluctuations in the resolution of the color cathode ray tube are prevented.
第１図１ａ）乃至（ｄ、）は従来の電子銃電極の製造方
法を示す工程図、第２図は本発明を適用した主Ｖンズ電
極の一例を示し、ｆａｌは管軸方向及び３本の電子ビー
ムの配列方向で切った断面図、ｆｂｌは垂直な方向で切
った断面図、（ｅｌはＧ４電極側から見たＧ。
上部電極の正面図、第３図ｔａｌ乃至（６）は本発明Ｅ
こなる電子銃電極の製造方法の一実施例を示す工程図で
ある。
２１・・・錐体部、 ２２・・・容器部、２３．２
４・・・凹所、 ２５・・・開孔形成面。
第１図
第２図
（０） （Ｃ）
第３図
（ａ） （ｂ） （ｃ）
（ｄ）1a) to 1(d) are process diagrams showing a conventional method for manufacturing an electron gun electrode, and FIG. 2 shows an example of a main V lens electrode to which the present invention is applied. fbl is a cross-sectional view taken in the direction of electron beam arrangement, fbl is a cross-sectional view taken in the perpendicular direction, (el is G as seen from the G4 electrode side. Invention E
FIG. 3 is a process diagram showing an example of a method for manufacturing an electron gun electrode. 21... Cone part, 22... Container part, 23.2
4... Recess, 25... Opening formation surface. Figure 1 Figure 2 (0) (C) Figure 3 (a) (b) (c) (d)
Claims (1)
この周辺リムと後退させた開孔形成面との凹所で長円状
レンズ空間を形成する電子銃電極の製造方法において、
先端部が推体状になるように容器部を成形した後、前記
錐体部を容器部内方向に反転圧縮して周辺リムと後退さ
せた開孔形成面との凹所を形成することを特徴とする電
子銃電極の製造方法。are arranged oppositely, each having peripheral rims on opposite sides;
In the method for manufacturing an electron gun electrode in which an oblong lens space is formed in the concave area between the peripheral rim and the recessed aperture forming surface,
The method is characterized in that after the container part is formed so that the tip part has a thrust shape, the conical part is reversely compressed inward of the container part to form a recess between the peripheral rim and the retracted aperture forming surface. A method for manufacturing an electron gun electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10584285A JPH0664988B2 (en) | 1985-05-20 | 1985-05-20 | Method of manufacturing electron gun electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10584285A JPH0664988B2 (en) | 1985-05-20 | 1985-05-20 | Method of manufacturing electron gun electrode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61264627A true JPS61264627A (en) | 1986-11-22 |
| JPH0664988B2 JPH0664988B2 (en) | 1994-08-22 |
Family
ID=14418269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10584285A Expired - Fee Related JPH0664988B2 (en) | 1985-05-20 | 1985-05-20 | Method of manufacturing electron gun electrode |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0664988B2 (en) |
-
1985
- 1985-05-20 JP JP10584285A patent/JPH0664988B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0664988B2 (en) | 1994-08-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |