JPH09129156A - Deflection yoke for cathode-ray tube - Google Patents
Deflection yoke for cathode-ray tubeInfo
- Publication number
- JPH09129156A JPH09129156A JP8089474A JP8947496A JPH09129156A JP H09129156 A JPH09129156 A JP H09129156A JP 8089474 A JP8089474 A JP 8089474A JP 8947496 A JP8947496 A JP 8947496A JP H09129156 A JPH09129156 A JP H09129156A
- Authority
- JP
- Japan
- Prior art keywords
- magnets
- coil
- horizontal
- deflection yoke
- flange
- 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
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
- H01J29/76—Deflecting by magnetic fields only
-
- 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
- H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
- H01J29/702—Convergence correction arrangements therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/70—Electron beam control outside the vessel
- H01J2229/703—Electron beam control outside the vessel by magnetic fields
- H01J2229/7032—Conductor design and distribution
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/70—Electron beam control outside the vessel
- H01J2229/703—Electron beam control outside the vessel by magnetic fields
- H01J2229/7038—Coil separators and formers
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は陰極線管用偏向ヨー
クに係り、特に画像の歪曲を補償するためにコイルセパ
レータの外面にマグネットが設置された陰極線管用偏向
ヨークに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deflection yoke for a cathode ray tube, and more particularly to a deflection yoke for a cathode ray tube in which a magnet is installed on the outer surface of a coil separator to compensate for image distortion.
【０００２】[0002]
【従来の技術】図２は従来の偏向ヨークを適用した陰極
線管を示す断面図である。パネル１０の内面には蛍光膜
１１が塗布され、このパネル１０から所定間隔に離隔さ
れ設置されるシャドウマスク１２はフレーム１３により
支持される。そのネック部１６に電子銃１５が挿入され
たファンネル１４は前記パネル１０とシーリング接着さ
れる。前記ネック部１６と隣接するファンネル１４の外
周には偏向ヨーク１７が設置される。2. Description of the Related Art FIG. 2 is a sectional view showing a cathode ray tube to which a conventional deflection yoke is applied. A fluorescent film 11 is applied to the inner surface of the panel 10, and a shadow mask 12 which is installed at a predetermined distance from the panel 10 is supported by a frame 13. The funnel 14 having the electron gun 15 inserted in the neck portion 16 is sealingly bonded to the panel 10. A deflection yoke 17 is installed on the outer periphery of the funnel 14 adjacent to the neck portion 16.
【０００３】このように構成された陰極線管において、
電子銃１５から放出された電子ビームは偏向ヨーク１７
により選択的に偏向され、シャドウマスク１２の電子ビ
ーム通過孔１２ａを通過して蛍光膜１１の各蛍光点に到
達する。蛍光膜１１に到達された電子ビームにより蛍光
物質が発光されることにより画像が形成される。In a cathode ray tube having such a structure,
The electron beam emitted from the electron gun 15 is a deflection yoke 17
Is selectively deflected by, and passes through the electron beam passage hole 12a of the shadow mask 12 to reach each fluorescent point of the fluorescent film 11. An image is formed by the fluorescent material being emitted by the electron beam reaching the fluorescent film 11.
【０００４】[0004]
【発明が解決しょうとする課題】図３は前記のごとき従
来の陰極線管において、パネル１０に形成された画像パ
ターンを示す。同図に示すごとく、パネル１０の中心部
の水平中心走査線２１は一直線となるが、パネル１０の
上部及び下部の水平走査線２２、２３は鴎翼形で歪曲さ
れる。画像の歪曲はパネル１０の縁部及びコーナーに行
くほど激しくなる。図３で符号Ｄはパネル１０の最上端
または最下端の水平走査線２２、２３の歪曲の幅を示
す。FIG. 3 shows an image pattern formed on the panel 10 in the conventional cathode ray tube as described above. As shown in the figure, the horizontal center scanning line 21 in the central portion of the panel 10 is a straight line, but the horizontal scanning lines 22 and 23 in the upper and lower portions of the panel 10 are distorted in the shape of a seagull. Image distortion becomes more severe toward the edges and corners of panel 10. In FIG. 3, reference numeral D indicates the width of distortion of the horizontal scanning lines 22 and 23 at the uppermost end or the lowermost end of the panel 10.
【０００５】このような歪曲は、パネル１０の表面の水
平、垂直方向及び対角線の方向の曲率半径が相互異なる
ため発生する。また偏向ヨーク１７の縁部で発生される
水平磁界はその中心部の水平磁界に比べて歪曲が激しい
ので画像の歪曲を加重させる。Such distortion occurs because the radii of curvature of the surface of the panel 10 in the horizontal, vertical and diagonal directions are different from each other. Further, since the horizontal magnetic field generated at the edge of the deflection yoke 17 is more severely distorted than the horizontal magnetic field at its center, the distortion of the image is added.
【０００６】前記のような問題点を解決するために、従
来には偏向ヨークのコイルセパレータの上下部に水平磁
界歪曲を補正するためのマグネットを設置したが、これ
も画像パターンの歪曲の完全な補償はできず、特に大型
パネルの場合に画像パターンの歪曲の完全な補償は不可
能であった。In order to solve the above-mentioned problems, conventionally, magnets for correcting horizontal magnetic field distortion are installed above and below the coil separator of the deflection yoke, but this also completes the distortion of the image pattern. No compensation was possible, especially for large panels, complete compensation of image pattern distortion was not possible.
【０００７】本発明は前記のごとき従来の問題点に鑑み
てなされたもので、その目的とするところは、コイルセ
パレータの外周面に相互対向されたマグネットを設置す
ることにより、偏向ヨークの水平磁界の歪曲及びパネル
表面の幾何学的曲率変化に起因する画像パターンの歪曲
を補正しうる陰極線管用偏向ヨークを提供することにあ
る。The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to install magnets opposed to each other on the outer peripheral surface of a coil separator so that the horizontal magnetic field of the deflection yoke is increased. It is an object of the present invention to provide a deflection yoke for a cathode ray tube which can correct the distortion of the image pattern caused by the distortion of the image and the geometrical curvature change of the panel surface.
【０００８】[0008]
【課題を解決するための手段】本発明による陰極線管用
偏向ヨークは、その上部の外周にフランジが具備された
コイルセパレータと、前記コイルセパレータの内面に設
置される水平偏向コイルと、前記コイルセパレータの外
面に設置される垂直偏向コイルと、前記フランジの外周
面に相互離隔されて設置された一対のマグネットと、前
記フランジの外周面に前記一対のマグネットと各々相互
対向するように設置された他の一対のマグネットを含
み、前記相互対向されたマグネットの外側端を連結する
直線は管軸及び水平中心走査線を含む平面に対して１１
〜５０°の角よりなることを特徴とする。A deflection yoke for a cathode ray tube according to the present invention includes a coil separator having a flange on an outer periphery of an upper portion thereof, a horizontal deflection coil installed on an inner surface of the coil separator, and the coil separator. A vertical deflection coil installed on the outer surface, a pair of magnets installed separately from each other on the outer peripheral surface of the flange, and another pair installed on the outer peripheral surface of the flange so as to face the pair of magnets. A straight line including a pair of magnets and connecting outer ends of the magnets facing each other is 11 with respect to a plane including a tube axis and a horizontal center scanning line.
It is characterized by having an angle of -50 °.
【０００９】[0009]
【発明の実施の形態】以下、図面に基づいて本発明の実
施の形態を説明する。図１は、本発明の実施の形態にお
ける陰極線管用偏向ヨークの斜視図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a cathode ray tube deflection yoke according to an embodiment of the present invention.
【００１０】図１において、偏向ヨークのコイルセパレ
ータ３１は合成樹脂のような絶縁物質よりなり、上部外
周にフランジ３２を有する。コイルセパレータ３１の内
面には水平偏向コイル３３が配置される。コイルセパレ
ータ３１の外面には垂直偏向コイル３４が配置され、こ
の垂直偏向コイル３４は例えば、フェライトコア（図示
せず）にドーナツ形で巻かれている。In FIG. 1, the coil separator 31 of the deflection yoke is made of an insulating material such as synthetic resin, and has a flange 32 on the outer periphery of the upper portion. A horizontal deflection coil 33 is arranged on the inner surface of the coil separator 31. A vertical deflection coil 34 is arranged on the outer surface of the coil separator 31, and the vertical deflection coil 34 is wound around a ferrite core (not shown) in a donut shape, for example.
【００１１】また、フランジ３２の外周面には電子ビー
ムの偏向度を補正して画像パターンの歪曲を防止するた
めの４つのマグネット４１、４２、４３、４４が配置さ
れる。マグネット４１とマグネット４２はコイルセパレ
ータ３１の中心ｃを通る水平線Ｘ及び管軸Ｚが構成する
仮想の平面Ｐに対して対称に配置される。マグネット４
３とマグネット４４も前記平面Ｐに対して対称に配置さ
れる。従って、マグネット４１とマグネット４３、およ
びマグネット４２とマグネット４４は各々対向される。Further, four magnets 41, 42, 43, 44 for correcting the deflection degree of the electron beam and preventing the distortion of the image pattern are arranged on the outer peripheral surface of the flange 32. The magnets 41 and 42 are arranged symmetrically with respect to an imaginary plane P formed by the horizontal line X passing through the center c of the coil separator 31 and the tube axis Z. Magnet 4
3 and the magnet 44 are also arranged symmetrically with respect to the plane P. Therefore, the magnet 41 and the magnet 43, and the magnet 42 and the magnet 44 are opposed to each other.
【００１２】相互対向された一対のマグネット４１、４
３の外側端を連結する直線Ｌは水平線Ｘに対して一定の
角θを形成する。前記水平線Ｘは図３の水平中心走査線
２１に相当するので、前記角θは連結直線Ｌと管軸Ｚ及
び水平中心走査線２１よりなる仮想の平面Ｐが構成する
角となり、望ましくは１１〜５０°である。相互対向さ
れた一対のマグネット４２、４４の場合も同様である。A pair of magnets 41, 4 facing each other
A straight line L connecting the outer ends of 3 forms a constant angle θ with the horizontal line X. Since the horizontal line X corresponds to the horizontal center scanning line 21 in FIG. 3, the angle θ is an angle formed by an imaginary plane P composed of the connecting straight line L, the tube axis Z and the horizontal center scanning line 21, and preferably 11 to 11. It is 50 °. The same applies to the case of the pair of magnets 42 and 44 facing each other.
【００１３】前記マグネット４１、４２、４３、４４は
５乃至４０ガウスほどの磁力を有し、永久磁石または電
磁石より構成される。マグネット４１、４２、４３、４
４のＳ極はフランジ３２の外面と接触することが望まし
い。The magnets 41, 42, 43 and 44 have a magnetic force of about 5 to 40 gauss and are composed of permanent magnets or electromagnets. Magnets 41, 42, 43, 4
The south pole of No. 4 preferably contacts the outer surface of the flange 32.
【００１４】本実施形態の効果を確認するために、前記
マグネットの角θを下の表に示されたように変化させな
がら画面最上端の水平走査線の歪曲幅Ｄ（図３参照）を
測定した。In order to confirm the effect of this embodiment, the distortion width D (see FIG. 3) of the horizontal scanning line at the top end of the screen is measured while changing the angle θ of the magnet as shown in the table below. did.
【００１５】下記の表によれば、マグネットの角θが０
〜１０°の時最上端の水平走査線の歪曲幅Ｄは比較的大
きく、それが５０°を越える場合には、水平走査線の歪
曲が最大となる反面、角度が１１〜５０°の場合には水
平走査線の歪曲が比較的小さい。According to the table below, the angle θ of the magnet is 0
When the angle is -10 °, the distortion width D of the uppermost horizontal scanning line is relatively large. When it exceeds 50 °, the distortion of the horizontal scanning line becomes maximum, but when the angle is 11-50 °. Has relatively small horizontal scan line distortion.
【００１６】[0016]
【表１】 [Table 1]
【００１７】[0017]
【発明の効果】以上説明したように、本発明に係る陰極
線管用偏向ヨークによれば、パネル面の幾何学的曲率変
化及び水平偏向磁界の歪曲により発生される画像パター
ンの歪曲を最小化させうる。As described above, according to the deflection yoke for a cathode ray tube according to the present invention, the distortion of the image pattern caused by the geometrical curvature change of the panel surface and the distortion of the horizontal deflection magnetic field can be minimized. .
【図１】本発明による陰極線管用偏向ヨークの斜視図で
ある。FIG. 1 is a perspective view of a deflection yoke for a cathode ray tube according to the present invention.
【図２】従来の偏向ヨークを適用した陰極線管の断面図
である。FIG. 2 is a sectional view of a cathode ray tube to which a conventional deflection yoke is applied.
【図３】パネル面の画像パターンが歪曲された状態を示
した図面である。FIG. 3 is a view showing a state in which an image pattern on a panel surface is distorted.
３１ コイルセパレータ ３２ フランジ ３３ 水平偏向コイル ３４ 垂直偏向コイル ４１，４２，４３，４４ マグネット 31 coil separator 32 flange 33 horizontal deflection coil 34 vertical deflection coil 41, 42, 43, 44 magnet
Claims (2)
コイルセパレータと、 前記コイルセパレータの内面に設置される水平偏向コイ
ルと、 前記コイルセパレータの外面に設置される垂直偏向コイ
ルと、 前記フランジの外周面の一側に相互離隔されて設置され
た一対のマグネットと、 前記フランジの外周面の他側に前記一対のマグネットと
相互対向するように設置された他の一対のマグネットを
含み、 前記相互対向されたマグネットの外側端を連結する直線
は管軸及び水平中心走査線を含む平面に対して１１〜５
０°の角よりなることを特徴とする陰極線管用偏向ヨー
ク。1. A coil separator having a flange on its outer periphery, a horizontal deflection coil installed on the inner surface of the coil separator, a vertical deflection coil installed on the outer surface of the coil separator, and A pair of magnets installed on one side of the outer peripheral surface so as to be spaced apart from each other, and a pair of magnets installed on the other side of the outer peripheral surface of the flange to face the pair of magnets, The straight line connecting the outer ends of the opposed magnets is 11 to 5 with respect to the plane including the tube axis and the horizontal center scanning line.
A deflection yoke for a cathode ray tube, wherein the deflection yoke has an angle of 0 °.
と接することを特徴とする請求項１に記載の陰極線管用
偏向ヨーク。2. The deflection yoke for a cathode ray tube according to claim 1, wherein an S pole of the magnet or the like is in contact with the flange.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1995-38232 | 1995-10-30 | ||
| KR1019950038232A KR100219700B1 (en) | 1995-10-30 | 1995-10-30 | Deflection yoke for cathode ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09129156A true JPH09129156A (en) | 1997-05-16 |
Family
ID=19432002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8089474A Pending JPH09129156A (en) | 1995-10-30 | 1996-04-11 | Deflection yoke for cathode-ray tube |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH09129156A (en) |
| KR (1) | KR100219700B1 (en) |
| MX (1) | MX9602237A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100839763B1 (en) * | 2001-12-17 | 2008-06-19 | 삼성에스디아이 주식회사 | A Coil Separator with Insertion Parts of Control Magnets |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100403773B1 (en) * | 2001-07-13 | 2003-10-30 | 엘지.필립스디스플레이(주) | The C-CRT Having the Magnet for Correcting |
| KR100814872B1 (en) * | 2002-03-12 | 2008-03-20 | 삼성에스디아이 주식회사 | Deflection device for cathode ray tube having deformation proof separator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6286650A (en) * | 1985-10-08 | 1987-04-21 | Matsushita Electronics Corp | Cathode-ray tube |
| US4852304A (en) * | 1987-10-29 | 1989-08-01 | Tokyo Seimtsu Co., Ltd. | Apparatus and method for slicing a wafer |
-
1995
- 1995-10-30 KR KR1019950038232A patent/KR100219700B1/en not_active IP Right Cessation
-
1996
- 1996-04-11 JP JP8089474A patent/JPH09129156A/en active Pending
- 1996-06-07 MX MX9602237A patent/MX9602237A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100839763B1 (en) * | 2001-12-17 | 2008-06-19 | 삼성에스디아이 주식회사 | A Coil Separator with Insertion Parts of Control Magnets |
Also Published As
| Publication number | Publication date |
|---|---|
| MX9602237A (en) | 1997-04-30 |
| KR100219700B1 (en) | 1999-09-01 |
| KR970023591A (en) | 1997-05-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20020107 |