JPH0458139B2 - - Google Patents
Info
- Publication number
- JPH0458139B2 JPH0458139B2 JP58041592A JP4159283A JPH0458139B2 JP H0458139 B2 JPH0458139 B2 JP H0458139B2 JP 58041592 A JP58041592 A JP 58041592A JP 4159283 A JP4159283 A JP 4159283A JP H0458139 B2 JPH0458139 B2 JP H0458139B2
- Authority
- JP
- Japan
- Prior art keywords
- deflection
- funnel
- cathode ray
- ray tube
- flat
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
- H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
- H01J29/70—Arrangements for deflecting ray or beam
- H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、偏平薄形のブラウン管の偏向装置
に関し、特に、偏向コイルの内面形状に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a deflection device for a flat and thin cathode ray tube, and particularly relates to the inner surface shape of a deflection coil.
電子銃から放出された電子ビームを蛍光面に照
射する通常のブラウン管は蛍光面からの奥行が長
くなるため小形のTV受像機を製作する上で大き
な障害となつている。
Conventional cathode ray tubes, which emit electron beams from an electron gun and irradiate a phosphor screen, have a long depth from the phosphor screen, which is a major obstacle in the production of compact TV receivers.
そこで、電子銃から放出される電子ビームの方
向と、蛍光面がほぼ直角に近い角度とされている
偏平薄形のブラウン管が開発されている。 Therefore, flat and thin cathode ray tubes have been developed in which the direction of the electron beam emitted from the electron gun and the phosphor screen are almost perpendicular to each other.
しかし、このような偏平薄形のブラウン管はそ
の外形が複雑となるため、回転対称となつている
従来の偏向ヨークを使用すると、偏向中心が電子
銃側により、その結果、電子ビームがフアンネル
の内壁に衝突し、いわゆるネツクシヤドウが発生
するという問題がある。又、偏向ヨークの内面が
フアンネルに密着しないため偏向電力が大きくな
るという欠点がある。 However, such a flat and thin cathode ray tube has a complicated external shape, so if a conventional rotationally symmetrical deflection yoke is used, the center of deflection will be closer to the electron gun, and as a result, the electron beam will be directed toward the inner wall of the funnel. There is a problem in that collisions occur, causing so-called netsukushiyadou. Furthermore, since the inner surface of the deflection yoke does not come into close contact with the funnel, there is a drawback that the deflection power increases.
この発明は、偏平薄形ブラウン管の外形を詳細
に分析し、上述したような問題を解決した偏向ヨ
ークを提供するものである。
This invention provides a deflection yoke that solves the above-mentioned problems by analyzing the outer shape of a flat, thin cathode ray tube in detail.
この発明の偏向ヨークは偏向コイルの内面形状
が円形−縦長の楕円形状−横長の楕円形状と連続
的に変化するように形成し、偏平薄形ブラウン管
の偏向中心を前方に移動し、かつ偏向電力が小さ
くなるようにしたものである。
The deflection yoke of the present invention is formed so that the inner surface shape of the deflection coil changes continuously from circular to vertically elongated oval to laterally elongated oval to move the center of deflection of the flat thin cathode ray tube forward, and to move the deflection power to the front. is made smaller.
第１図ａ，ｂはこの発明の偏向ヨークが適用さ
れる偏平薄形のブラウン管の側面図、及び正面図
を示したもので、１はヒータ、電子レンズ、加速
電極等で構成されている電子銃が内蔵されている
ネツク部、２は蛍光表示部３と、前記ネツク部１
を接続しているフアンネル・コーン部（以下フア
ンネル部という）である。
Figures 1a and b show a side view and a front view of a flat, thin cathode ray tube to which the deflection yoke of the present invention is applied. A neck part 2 in which a gun is built in is a fluorescent display part 3 and the neck part 1.
This is the funnel cone section (hereinafter referred to as the funnel section) that connects the.
前記蛍光表示部３にはその内部に電子ビームが
衝突した時に発光する蛍光膜４が内壁に形成され
ており、この発光点が見えるように上部には透視
面５が形成されている。 The fluorescent display section 3 has a fluorescent film 4 formed on its inner wall that emits light when an electron beam collides with it, and a see-through surface 5 is formed at the top so that the light emitting point can be seen.
したがつて、後述する偏向ヨークによつて電子
ビームが矢印Ａ、又はＢのように偏向されて蛍光
面４に衝突すると、その発光点が透視面５からみ
ることができ、通常のブラウン管にみられるよう
に電子ビームを水平方向、及び垂直方向に掃引
し、TV画像信号で変調すると偏平なTV受像機
が構成できる。 Therefore, when the electron beam is deflected in the direction of arrow A or B by the deflection yoke (to be described later) and collides with the fluorescent screen 4, the emitting point can be seen from the transparent surface 5, which is different from that seen in ordinary cathode ray tubes. By sweeping the electron beam horizontally and vertically and modulating it with a TV image signal, a flat TV receiver can be constructed.
このような電子ビームの偏向走査は、普通のブ
ラウン管に使用されている偏向コイルを前記ネツ
ク部１とフアンネル部２の接続部近傍におき、若
干の補正信号を重畳して偏向コイルを鋸歯状波で
ドライブすればよいが、電子ビームの偏向中心点
Ｐが後側にあるとフアンネル部２の内壁に電子ビ
ームが衝突し、いわゆるネツクシヤドウが発生す
る。 Such electron beam deflection scanning is performed by placing a deflection coil used in an ordinary cathode ray tube near the connection between the neck section 1 and the funnel section 2, and superimposing a slight correction signal on the deflection coil to create a sawtooth waveform. However, if the deflection center point P of the electron beam is on the rear side, the electron beam will collide with the inner wall of the funnel portion 2, causing what is called a shadow shadow.
そこで、偏向中心点Ｐが前方に移動するように
工夫する必要があるが、従来のブラウン管に使用
されているような内面が円形となつている偏向コ
イルを使用すると次に述べるようにかゝる偏平薄
形のブラウン管では偏向中心点Ｐを前方に移動さ
せることが困難である。 Therefore, it is necessary to devise a way to move the deflection center point P forward, but if a deflection coil with a circular inner surface, such as those used in conventional cathode ray tubes, is used, this will occur as described below. In a flat and thin cathode ray tube, it is difficult to move the deflection center point P forward.
すなわち、かゝる偏平薄形のブラウン管はその
偏向精度をよくするためネツク部１の中心軸x1
と、断面が横の長楕円で示されるフアンネル部２
の中心軸x2は図に示すようにほぼ5゜位の角度θで
持つて交差している。そのためネツク部１とフア
ンネル部２の接続部（シール部）は図のＤの断面
図に示すように若干縦長の楕円形となる。 In other words, in order to improve the deflection accuracy of such a flat and thin cathode ray tube, the central axis of the neck portion 1 x 1
and the funnel part 2 whose cross section is shown as a horizontal long ellipse.
The central axes x 2 of the two intersect with each other at an angle θ of about 5°, as shown in the figure. Therefore, the connecting portion (sealing portion) between the neck portion 1 and the funnel portion 2 has a slightly elongated elliptical shape as shown in the sectional view D in the figure.
したがつて、従来の偏向コイルにみられるよう
にその内径がネツク部１の直径とほぼ等しくなつ
ているものは前記縦長の楕円形となる接続部で阻
止されて偏向コイルをフアンネル部２の方へ寄せ
ることができず、電子ビームの偏向中心点Ｐが後
方に位置する。かといつて偏向コイルの内径寸法
を縦長の楕円形の長径に合わせて作ると、ネツク
部１においてその外壁と偏向コイルの内径との間
に空間が生じ、偏向電力を増大することになる。 Therefore, if the inner diameter of the conventional deflection coil is approximately equal to the diameter of the neck portion 1, the deflection coil will be blocked by the vertically elongated connecting portion and directed toward the funnel portion 2. The center point P of deflection of the electron beam is located at the rear. On the other hand, if the inner diameter of the deflection coil is made to match the long axis of the vertically elongated ellipse, a space will be created between the outer wall of the neck portion 1 and the inner diameter of the deflection coil, increasing the deflection power.
第２図はかゝる問題を解消するために形成した
この発明の偏向ヨーク１０の内形を線図で示した
もので、ネツク部１に接する円形領域１１の断面
はS1、ネツク部１とフアンネル部２の接合部に接
する縦楕円領域１２の断面はS2、さらにフアンネ
ル部２に接する横楕円領域１３の断面はS3で示さ
れる。 FIG . 2 is a diagram showing the inner shape of the deflection yoke 10 of the present invention formed to solve such problems. The cross section of the vertical elliptical region 12 in contact with the joint portion between the funnel portion 2 and the funnel portion 2 is indicated by S 2 , and the cross section of the horizontal elliptical region 13 in contact with the funnel portion 2 is indicated by S 3 .
そして、これらの断面S1，S2，S3は偏向ヨーク
１０をフアンネル部２の方向から見た第３図に示
すように円形、縦楕円形、横楕円形で示される。 These cross sections S 1 , S 2 , and S 3 are shown as a circle, a vertical ellipse, and a horizontal ellipse as shown in FIG. 3 when the deflection yoke 10 is viewed from the direction of the funnel portion 2.
この発明は上述したように順次、断面がS1−S2
−S3となるような形状で偏向ヨーク１０の内面を
形成したので偏平薄形のブラウン管のネツク部１
からフアンネル部２にかけて密着した状態で偏向
ヨーク１０を挿入することができるようになつ
た。 In this invention, as described above, the cross section is S 1 −S 2
Since the inner surface of the deflection yoke 10 is formed in a shape such that −S 3 , the neck portion 1 of a flat and thin cathode ray tube
The deflection yoke 10 can now be inserted in close contact with the funnel portion 2.
そのため電子ビームの偏向中心が後方に移動
し、ネツクシヤドウを完全に防止することができ
ると共に、偏向電力も軽減することが可能になつ
た。 As a result, the center of deflection of the electron beam moves backward, making it possible to completely prevent shadow shadows and also to reduce the deflection power.
なお、偏向ヨーク１０を形成する偏向コイルは
従来と同様に垂直偏向コイルをトロイダル巻き
に、水平偏向コイルをくら形に巻いて形成すれば
よく、その巻分布状態も平行磁界が得られるよう
に設定することはいうまでもない。 Note that the deflection coil forming the deflection yoke 10 may be formed by winding the vertical deflection coil in a toroidal manner and the horizontal deflection coil in a circle shape, as in the conventional case, and the winding distribution state is also set so as to obtain a parallel magnetic field. It goes without saying that you should.
以上説明したように、この発明は電子銃の中心
線が蛍光面の下側に衝合し、かつ、電子ビームが
蛍光面の斜め方向から入射するように構成されて
いる偏平薄形ブラウン管を偏向するために、ネツ
ク部から挿入される偏向ヨークは、その内面形状
がネツク側から見て円形−縦長の楕円形状−横長
の楕円形状となるように構成されているので、ネ
ツク部とフアンネル部の接合箇所に前記縦長の楕
円形状がフイツトし、偏向ヨークをフアンネルに
沿つて深く挿入することができる。そのため電子
ビームがブラウン管の内壁にあたり蛍光面上に影
を作ることがなくなり、かつ偏向ヨークがフアン
ネルカーブに密着するので偏向電力を削減するこ
とができるという利点を有する。
As explained above, this invention deflects a flat, thin cathode ray tube configured so that the center line of the electron gun collides with the lower side of the phosphor screen and the electron beam enters the phosphor screen from an oblique direction. In order to do this, the deflection yoke inserted from the neck part is configured so that its inner surface shape is circular - vertically elongated oval - horizontally elongated when viewed from the neck side. The vertically elongated ellipse fits into the joint, allowing the deflection yoke to be deeply inserted along the funnel. Therefore, the electron beam does not hit the inner wall of the cathode ray tube and cast a shadow on the phosphor screen, and the deflection yoke closely contacts the Funnel curve, which has the advantage that deflection power can be reduced.
第１図ａ，ｂは偏平薄形ブラウン管の側面図と
正面図、第２図はこの発明の偏向ヨークの内面形
状と線図で表わした説明図、第３図はこの発明の
偏向ヨークをフアンネル側からみた時の内面形状
図である。
図中、１はネツク部、２はフアンネル部、３は
蛍光表示部、１０は偏向ヨークを示す。
Figures 1a and b are side and front views of a flat thin cathode ray tube, Figure 2 is an explanatory diagram showing the inner surface shape and line diagram of the deflection yoke of the present invention, and Figure 3 is a funnel diagram of the deflection yoke of the present invention. FIG. 3 is a diagram of the inner surface shape when viewed from the side. In the figure, 1 is a neck portion, 2 is a funnel portion, 3 is a fluorescent display portion, and 10 is a deflection yoke.
Claims (1)
合するように設けられているネツク部と、 該ネツク部に接続され、上記電子銃からの電子
ビームが蛍光面の斜め方向から入射するよう配置
されているフアンネル部を備えている偏平薄形ブ
ラウン管の偏向ヨークであつて、 上記偏平薄形ブラウン管に挿入される偏向ヨー
クの内面形状を、上記電子銃側から上記フアンネ
ル部に向かつて、円形−縦長の楕円形状−横長の
楕円形状となるように連続的に変化し、上記縦長
の楕円形状が上記ネツク部とフアンネル部の接合
箇所に衝合するように構成したことを特徴とする
偏平形ブラウン管の偏向ヨーク。[Scope of Claims] 1. A neck portion provided such that an extension of the central axis of the electron gun abuts the lower side of the phosphor screen; and a neck portion connected to the neck portion, through which the electron beam from the electron gun A deflection yoke for a flat, thin cathode ray tube that is provided with a funnel portion arranged so that light enters the phosphor screen from an oblique direction. From there toward the funnel part, the shape changes continuously from circular to vertically elongated oval to horizontally elongated, and the vertically elongated oval shape collides with the joint between the neck part and funnel part. A deflection yoke for a flat cathode ray tube characterized by the following structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4159283A JPS59167942A (en) | 1983-03-15 | 1983-03-15 | Deflection yoke for flat thin type cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4159283A JPS59167942A (en) | 1983-03-15 | 1983-03-15 | Deflection yoke for flat thin type cathode-ray tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59167942A JPS59167942A (en) | 1984-09-21 |
| JPH0458139B2 true JPH0458139B2 (en) | 1992-09-16 |
Family
ID=12612681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4159283A Granted JPS59167942A (en) | 1983-03-15 | 1983-03-15 | Deflection yoke for flat thin type cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59167942A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6313243A (en) * | 1986-03-19 | 1988-01-20 | Sanyo Electric Co Ltd | Deflection yoke |
| DE3760775D1 (en) * | 1986-03-19 | 1989-11-16 | Sanyo Electric Co | Flat cathode-ray tube |
| KR100459155B1 (en) * | 1997-05-31 | 2005-02-28 | 엘지전자 주식회사 | Color Cathode Tube |
| KR100300321B1 (en) * | 1999-01-08 | 2001-09-26 | 김순택 | Cathode Ray Tube |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5750750A (en) * | 1980-09-12 | 1982-03-25 | Sony Corp | Deflector for flat picture tube |
| JPS57176652A (en) * | 1981-04-23 | 1982-10-30 | Sony Corp | Thin cathode-ray tube |
-
1983
- 1983-03-15 JP JP4159283A patent/JPS59167942A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59167942A (en) | 1984-09-21 |
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