JPH022259B2 - - Google Patents
Info
- Publication number
- JPH022259B2 JPH022259B2 JP58048178A JP4817883A JPH022259B2 JP H022259 B2 JPH022259 B2 JP H022259B2 JP 58048178 A JP58048178 A JP 58048178A JP 4817883 A JP4817883 A JP 4817883A JP H022259 B2 JPH022259 B2 JP H022259B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- generating member
- field generating
- magnetic
- cathode ray
- 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
Links
- 230000005415 magnetization Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000010894 electron beam technology Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- H01J9/44—Factory adjustment of completed discharge tubes or lamps to comply with desired tolerances
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
Description
【発明の詳細な説明】
この発明は電子ビームの軌道を修正するための
陰極線管の製造方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a cathode ray tube for correcting the trajectory of an electron beam.
従来の陰極線管装置を示す第１図において、１
はカラー陰極線管を示し、パネル部１ａの内面に
形成された螢光スクリーン２と、シヤドウマスク
３および螢光スクリーン２に対向してネツク部１
ｂに配置された電子銃４とを内蔵して形成されて
いる。５は陰極線管１のフアンネル部１ｃ外周に
取付けられた偏向ヨークで、電子銃４によつて形
成された電子ビームを水平および垂直方向に偏向
させる。６はゴム状に形成されたフエライト磁石
を陰極線管１のネツク部１ｂ外周に巻きつけて構
成された磁界発生部材で、螢光スクリーン２にお
けるストライプ幅中心と電子ビームの幅中心とを
一致させるための補正磁界を電子ビームに与える
ものである。この補正磁界は第２図に示すように
一対の近接した磁極からなる着磁ヘツド７を磁界
発生部材６の外周に密着させながら回動させ、Ｓ
極あるいはＮ極に順次磁化させることによつて形
成されている。 In FIG. 1 showing a conventional cathode ray tube device, 1
indicates a color cathode ray tube, which includes a fluorescent screen 2 formed on the inner surface of the panel portion 1a, a shadow mask 3, and a neck portion 1 facing the fluorescent screen 2.
It is formed by incorporating an electron gun 4 located at b. Reference numeral 5 denotes a deflection yoke attached to the outer periphery of the funnel portion 1c of the cathode ray tube 1, which deflects the electron beam formed by the electron gun 4 in horizontal and vertical directions. Reference numeral 6 denotes a magnetic field generating member constructed by wrapping a rubber-like ferrite magnet around the outer periphery of the neck portion 1b of the cathode ray tube 1, and is used to align the center of the stripe width on the fluorescent screen 2 with the center of the width of the electron beam. This applies a correction magnetic field to the electron beam. This correction magnetic field is generated by rotating the magnetizing head 7, which is made up of a pair of adjacent magnetic poles, while keeping it in close contact with the outer periphery of the magnetic field generating member 6, as shown in FIG.
It is formed by sequentially magnetizing the pole or north pole.
ところで、磁界発生部材６の磁化容易軸は陰極
線管１の管軸に直交する方向に形成されており、
第２図に示すような着磁方法を用いると、磁束が
磁化容易軸と直交する方向に発生することになる
ため着磁効率が極めて悪く、また、大きな磁束密
度を必要とすることから、電力消費も大きなもの
となつていた。 By the way, the axis of easy magnetization of the magnetic field generating member 6 is formed in a direction perpendicular to the tube axis of the cathode ray tube 1.
If the magnetization method shown in Figure 2 is used, the magnetization efficiency is extremely poor because the magnetic flux is generated in a direction perpendicular to the axis of easy magnetization, and it also requires a large magnetic flux density, which reduces the power consumption. Consumption was also growing.
この発明は上述のような欠点を解消するためな
されたもので、着磁効率を向上させた陰極線管の
製造方法を提供するものである。 This invention was made to eliminate the above-mentioned drawbacks, and provides a method for manufacturing a cathode ray tube with improved magnetization efficiency.
以下、この発明を一実施例である第３図、第４
図について説明する。 Hereinafter, the present invention will be explained as follows, as shown in FIGS.
The diagram will be explained.
第３図はこの発明による着磁装置を示すもの
で、Ｅ字状に形成された第１コア部を構成するコ
ア８と、このコア８の中心磁極８ａに巻き付けら
れたコイル９と、コア８の両側磁極８ｂに対して
摺動可能に取付けられて磁気的に結合され、第２
コア部を構成する円弧状の磁性体１０とから形成
されている。すなわち、磁極８ａと磁性体１０と
により異なる磁束密度の着磁ヘツドが形成される
ことになる。 FIG. 3 shows a magnetizing device according to the present invention, in which a core 8 constituting a first core portion formed in an E shape, a coil 9 wound around a central magnetic pole 8a of this core 8, and a core 8 is slidably attached to and magnetically coupled to both magnetic poles 8b of the second
It is formed from an arc-shaped magnetic body 10 that constitutes a core portion. That is, the magnetic pole 8a and the magnetic body 10 form a magnetized head with different magnetic flux densities.
このような着磁装置を用い、まず、陰極線管１
におけるネツク部１ｂを磁極８ａと磁性体１０と
の間に挿入して磁性体１０を上方に移動させ、第
４図に示すように磁界発生部材６の外周を挾むよ
うに配置する。次いで、コイル９に電流を流す
と、磁極８ａの先端から磁性体１０に向つて磁力
線が発生することになり、このとき、磁極８ａの
先端部分が最大の磁束密度となる。また、磁極８
ａと磁性体１０の距離を管軸を通る位置において
最も短かくなるように磁性体１０を形成すること
によつて磁極８ａの先端に対応する磁界発生部材
６には磁力線が肉厚方向すなわち磁化容易軸と同
一方向に発生することになり、効果的に着磁させ
ることが可能となる。その後、パルスモータによ
つて着磁装置を1/200のピツチで回動するととも
に磁極８ａをＮ極またはＳ極に切替えることによ
り、磁界発生部材６を順次着磁して工程を完了す
る。 Using such a magnetizing device, first, the cathode ray tube 1 is
The neck portion 1b is inserted between the magnetic pole 8a and the magnetic body 10, and the magnetic body 10 is moved upward and placed so as to sandwich the outer periphery of the magnetic field generating member 6, as shown in FIG. Next, when a current is passed through the coil 9, lines of magnetic force are generated from the tip of the magnetic pole 8a toward the magnetic body 10, and at this time, the tip of the magnetic pole 8a has the maximum magnetic flux density. Also, magnetic pole 8
By forming the magnetic body 10 so that the distance between the magnetic body 10 and the magnetic body 10 is the shortest at the position passing through the tube axis, the magnetic field generating member 6 corresponding to the tip of the magnetic pole 8a has lines of magnetic force in the thickness direction, that is, magnetization. This occurs in the same direction as the easy axis, making it possible to effectively magnetize. Thereafter, the magnetizing device is rotated by a pulse motor at a pitch of 1/200, and the magnetic pole 8a is switched to the N pole or the S pole, thereby sequentially magnetizing the magnetic field generating member 6 to complete the process.
なお、着磁磁界および強度は電子ビームと螢光
体発光部との相対的なずれを検出し、これを補正
するために必要な磁界を算出させることによつて
決定される。また、磁極８ａの幅Ｗは磁界発生部
材６の肉厚に対して２倍程度が必要とされ、磁界
発生部材６の肉厚を0.76mmとすると、1.5mmに形
成する必要がある。さらに、磁極８ａの肉厚ｔは
約５mmに形成されている。 Note that the magnetizing magnetic field and intensity are determined by detecting a relative shift between the electron beam and the phosphor light-emitting section, and calculating the magnetic field necessary to correct this. Further, the width W of the magnetic pole 8a needs to be about twice the thickness of the magnetic field generating member 6, and if the thickness of the magnetic field generating member 6 is 0.76 mm, it needs to be formed to 1.5 mm. Furthermore, the wall thickness t of the magnetic pole 8a is approximately 5 mm.
このように形成することによつて、磁界発生部
材６における着磁磁界幅を狭く、かつ強力な着磁
が可能となり、電子ビームの軌道補正の精度を向
上させることができる。 By forming in this way, the width of the magnetizing magnetic field in the magnetic field generating member 6 can be narrowed and strong magnetization can be performed, and the accuracy of trajectory correction of the electron beam can be improved.
なお、上述の実施例においては、コア８をＥ字
状に形成し、両側磁極８ｂ間に磁性体１０を架設
するように構成したが、コ字状として磁性体１０
の一方を遊端としてもよく、また、磁界発生部材
６を陰極線管１のネツク部１ｂ内に配置してもよ
い。さらに、着磁装置を固定とし、陰極線管１を
回動するように構成してもよい。 In the above embodiment, the core 8 is formed in an E-shape, and the magnetic body 10 is installed between the magnetic poles 8b on both sides.
One of the ends may be a free end, or the magnetic field generating member 6 may be disposed within the neck portion 1b of the cathode ray tube 1. Furthermore, the magnetizing device may be fixed and the cathode ray tube 1 may be configured to rotate.
以上説明したように、この発明によれば磁界発
生部材の着磁効率を向上させることが可能とな
り、この発明の実用価値は大である。 As explained above, according to the present invention, it is possible to improve the magnetization efficiency of the magnetic field generating member, and the practical value of the present invention is great.
第１図はカラー陰極線管の構成を示す概要図、
第２図は従来の着磁方法を示す概要図、第３図は
この発明に用いられる着磁装置を示す概要図、第
４図はこの発明の一実施例である着磁方法を示す
概要図である。
図中、１は陰極線管、１ｂはネツク部、６は磁
界発生部材、８は第１コア部、８ａは磁極、９は
コイル、１０は第２コア部である。なお、図中、
同一符号は同一あるいは相当する部分を示すもの
とする。
Figure 1 is a schematic diagram showing the configuration of a color cathode ray tube.
Fig. 2 is a schematic diagram showing a conventional magnetizing method, Fig. 3 is a schematic diagram showing a magnetizing device used in the present invention, and Fig. 4 is a schematic diagram showing a magnetizing method as an embodiment of the present invention. It is. In the figure, 1 is a cathode ray tube, 1b is a neck portion, 6 is a magnetic field generating member, 8 is a first core portion, 8a is a magnetic pole, 9 is a coil, and 10 is a second core portion. In addition, in the figure,
The same reference numerals indicate the same or corresponding parts.
Claims (1)
の管軸と直交する方向の磁化容易軸を有する磁界
発生部材を取付けた後、上記陰極線管の電子ビー
ム軌道の補正磁界を形成するように上記磁界発生
部材を着磁する方法において、上記磁界発生部材
と対向する磁極が結合された第１コア部と、上記
ネツク部を挾んで上記磁極と対向し、上記第１コ
ア部と磁気的に結合された第２コア部とを備え、
上記第２コア部は上記磁極との距離が上記管軸を
通る位置において最も短くなるように形成された
着磁ヘツドを用い、上記磁極と上記磁界発生部材
の相対位置を変えながら上記磁界発生部材を順次
着磁するようにしたことを特徴とする陰極線管の
製造方法。1. After installing a magnetic field generating member having an axis of easy magnetization in a direction perpendicular to the tube axis of the cathode ray tube around the neck portion of the cathode ray tube, A method for magnetizing a magnetic field generating member includes: a first core portion to which a magnetic pole facing the magnetic field generating member is coupled; and a first core portion facing the magnetic pole across the neck portion and magnetically coupled to the first core portion. and a second core portion,
The second core part uses a magnetizing head formed so that the distance from the magnetic pole is the shortest at a position passing through the tube axis, and the magnetic field generating member is changed while changing the relative position of the magnetic pole and the magnetic field generating member. 1. A method for manufacturing a cathode ray tube, characterized by sequentially magnetizing the .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4817883A JPS59173932A (en) | 1983-03-22 | 1983-03-22 | Production method of crt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4817883A JPS59173932A (en) | 1983-03-22 | 1983-03-22 | Production method of crt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59173932A JPS59173932A (en) | 1984-10-02 |
| JPH022259B2 true JPH022259B2 (en) | 1990-01-17 |
Family
ID=12796128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4817883A Granted JPS59173932A (en) | 1983-03-22 | 1983-03-22 | Production method of crt |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59173932A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51122322A (en) * | 1975-04-01 | 1976-10-26 | Philips Nv | Method of producing magnetic convergence device and color display tube having magnetic convergence device |
| JPS5576554A (en) * | 1978-11-30 | 1980-06-09 | Mitsubishi Electric Corp | Color braun tube |
-
1983
- 1983-03-22 JP JP4817883A patent/JPS59173932A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51122322A (en) * | 1975-04-01 | 1976-10-26 | Philips Nv | Method of producing magnetic convergence device and color display tube having magnetic convergence device |
| JPS5576554A (en) * | 1978-11-30 | 1980-06-09 | Mitsubishi Electric Corp | Color braun tube |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59173932A (en) | 1984-10-02 |
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