JPH0364835A - Deflecting yoke - Google Patents
Deflecting yokeInfo
- Publication number
- JPH0364835A JPH0364835A JP19900789A JP19900789A JPH0364835A JP H0364835 A JPH0364835 A JP H0364835A JP 19900789 A JP19900789 A JP 19900789A JP 19900789 A JP19900789 A JP 19900789A JP H0364835 A JPH0364835 A JP H0364835A
- Authority
- JP
- Japan
- Prior art keywords
- vertical deflection
- magnetic field
- electron gun
- auxiliary
- gun side
- 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
- 239000012212 insulator Substances 0.000 claims 1
- 206010010071 Coma Diseases 0.000 abstract description 13
- 238000004804 winding Methods 0.000 abstract description 10
- 239000000126 substance Substances 0.000 abstract 2
- 241000226585 Antennaria plantaginifolia Species 0.000 description 4
- 238000010894 electron beam technology Methods 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
- H01J29/702—Convergence correction arrangements therefor
- H01J29/705—Dynamic convergence systems
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2229/00—Details of cathode ray tubes or electron beam tubes
- H01J2229/56—Correction of beam optics
- H01J2229/568—Correction of beam optics using supplementary correction devices
- H01J2229/5681—Correction of beam optics using supplementary correction devices magnetic
- H01J2229/5687—Auxiliary coils
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、主としてインライン型電子銃を備えたカラー
受像管に装着されて、ピンクッション状に歪んだ水平偏
向磁界およびバレル状に歪んだ垂直偏向磁界を発生する
偏向ヨークに関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is mainly intended for use in a color picture tube equipped with an in-line electron gun to produce a horizontal deflection magnetic field distorted into a pincushion shape and a vertical deflection magnetic field distorted into a barrel shape. This relates to a deflection yoke that generates
従来の技術
一般に、インライン型電子銃を備えたカラー受像管に装
着される偏向ヨークは、サドル型の水平偏向コイルと、
トロイダル型またはサドル型の垂直偏向コイルとを備え
、前記水平偏向コイルはピンクッション状に歪んだ水平
偏向磁界を、そして、前記垂直偏向コイルはバレル状に
歪んだ垂直偏向磁界をそれぞれ発生する。このため、ダ
イナミックコンバーゼンス回路不要の所謂セルフコンバ
ーゼンス構成となし得るのであるが、このように歪んだ
磁界はコマ歪みの発生原因となる。コンバーゼンスコマ
歪みを生じた画面は第３図に示すように、センターの電
子ビームによる緑色のラスタＧと両サイドの電子ビーム
による赤色および青色のラスタＲ，Ｂとが画面の上下に
おいて位置ずれする。また、第４図に示すように両サイ
ドの電子ビームによって画面の周辺部に生成される赤お
よび青のビームスポットｒ、ｂに回転歪み（スポットコ
マ歪み〉を生じやすく、このようなスポットコマ歪みを
生じると高解像度の管替性を得ることができなくなる。BACKGROUND OF THE INVENTION In general, a deflection yoke attached to a color picture tube equipped with an in-line electron gun includes a saddle-shaped horizontal deflection coil,
A toroidal or saddle type vertical deflection coil is provided, the horizontal deflection coil generates a horizontal deflection magnetic field distorted in a pincushion shape, and the vertical deflection coil generates a vertical deflection magnetic field distorted in a barrel shape. Therefore, a so-called self-convergence configuration that does not require a dynamic convergence circuit can be achieved, but such a distorted magnetic field causes coma distortion. As shown in FIG. 3, on a screen with convergence coma distortion, the green raster G produced by the center electron beam and the red and blue rasters R and B produced by the electron beams on both sides are misaligned in the upper and lower parts of the screen. In addition, as shown in Figure 4, rotational distortion (spot coma distortion) is likely to occur in the red and blue beam spots r and b generated at the periphery of the screen by the electron beams on both sides, and such spot coma distortion If this occurs, it becomes impossible to obtain high-resolution tube changeability.
かかる課題の解決策として、特開昭６２−２１７５４６
号公報に開示されている発明では、垂直偏向磁界の電子
銃側部分をピンクッション状に歪ませている。すなわち
、トロイダル型垂直偏向コイルからの漏れ磁界を第１お
よび第２の磁性体片で拾い、両磁性体片による磁界生成
作用により、電子銃側端部にピンクッション状分布の補
正用補助磁界を生じさせる。As a solution to this problem, Japanese Patent Application Laid-Open No. 62-217546
In the invention disclosed in the publication, the electron gun side portion of the vertical deflection magnetic field is distorted into a pincushion shape. That is, the leakage magnetic field from the toroidal vertical deflection coil is picked up by the first and second magnetic pieces, and by the magnetic field generation action of both magnetic pieces, an auxiliary magnetic field for correction with a pincushion-like distribution is generated at the end on the electron gun side. bring about
発明が解決しようとする課題
このような構成によるコマ歪み対策は非常に有効である
が、必要なピンクッション状分布の補助磁界を第１およ
び第２の磁性体片のみによって満足に得るのは容易でな
く、実際には垂直偏向コイル自体の巻き線分布を若干調
整する必要がある。Problems to be Solved by the Invention Although countermeasures against coma distortion using such a configuration are very effective, it is easy to satisfactorily obtain the necessary auxiliary magnetic field with a pincushion-like distribution using only the first and second magnetic pieces. Rather, it is actually necessary to slightly adjust the winding distribution of the vertical deflection coil itself.
しかし、コマ歪み対策の一環として垂直偏向コイル自体
の巻き線分布を調整すると、コンバーゼンス補正のため
の巻き線分布調整における裕度を低くしてしまう。However, if the winding distribution of the vertical deflection coil itself is adjusted as part of measures against coma distortion, the margin for adjusting the winding distribution for convergence correction will be reduced.
課題を解決するための手段
本発明によると、垂直偏向コイルからの漏れ磁界を誘導
し、ピンクッション状に歪んだ補正用補助磁界を発生す
る在来の第１および第２の磁性体片に補助コイルを巻装
せしめ、この補助コイルを垂直偏向コイルに接続する構
成をとる。Means for Solving the Problems According to the present invention, an auxiliary magnetic material piece is added to the conventional first and second magnetic material pieces that induce a leakage magnetic field from a vertical deflection coil and generate a corrective auxiliary magnetic field distorted in a pincushion shape. A coil is wound around the coil, and this auxiliary coil is connected to a vertical deflection coil.
作用
このように構成すると、第１および第２の磁性体片自体
による在来の補助磁界生成作用に加え、前記補助コイル
による磁界生成作用が働くので、補助コイルの巻回数等
をあらかじめ適当に設定しておくだけで、つまり、垂直
偏向コイル自体の巻き線分布を調整することなくコンバ
ーゼンスコマ歪みおよびスポットコマ歪みを十分に補正
することができ、垂直偏向コイル自体に対するコンバー
ゼンス補正のための巻き線分布調整に十分な余裕をもた
せることができる。Function: With this configuration, in addition to the conventional auxiliary magnetic field generation effect by the first and second magnetic pieces themselves, the auxiliary coil generates a magnetic field, so the number of turns of the auxiliary coil can be set appropriately in advance. That is, convergence coma distortion and spot coma distortion can be sufficiently corrected without adjusting the winding distribution of the vertical deflection coil itself, and the winding distribution for convergence correction on the vertical deflection coil itself This allows sufficient leeway for adjustment.
実施例
つぎに、本発明を図面に示した実施例とともに説明する
。Embodiments Next, the present invention will be explained along with embodiments shown in the drawings.
第１図に示すように、一対のトロイダル型垂直偏向コイ
ルｌａ、ｌｂは、そのフェライトコアー２および一対の
サドル型水平偏向コイル（図示せず）とともに絶縁枠体
３によって支持されており、絶縁枠体３は、その径大端
縁３ａにおいて前記水平偏向コイルの径大端側円弧状部
をカバーしているとともに、前記水平偏向コイルの径小
端側円弧状部を収容するための箱状部３ｂと、状部より
電子銃側へ突出した円筒状部３ｃとを径小端側に有して
いる。箱状部３ｂの両側壁外面には、第１および第２の
磁性体片４，５の各主面部４ａ、５ａが、垂直偏向磁界
の電子銃側部分に磁気的に結合すべく相対向して配設さ
れており、主面部４ａ。As shown in FIG. 1, a pair of toroidal vertical deflection coils la, lb are supported by an insulating frame 3 together with their ferrite core 2 and a pair of saddle-shaped horizontal deflection coils (not shown). The body 3 covers the large diameter end side circular arc portion of the horizontal deflection coil at its large diameter end 3a, and has a box shaped portion for accommodating the small diameter side circular arc portion of the horizontal deflection coil. 3b, and a cylindrical portion 3c protruding from the cylindrical portion toward the electron gun side on the small diameter end side. On the outer surfaces of both side walls of the box-shaped portion 3b, main surface portions 4a and 5a of the first and second magnetic pieces 4 and 5 face each other in order to be magnetically coupled to the electron gun side portion of the vertical deflection magnetic field. The main surface portion 4a is arranged as follows.
５ａから管軸側へ折れ曲がり、上端縁および下端縁から
水平に延び出て円筒状部３ｃの外面に沿って電子銃側へ
突出した４つの分岐部４ｂ、４ｃ、５ｂ。Four branch portions 4b, 4c, and 5b are bent from 5a toward the tube axis side, extend horizontally from the upper end edge and the lower end edge, and protrude toward the electron gun side along the outer surface of the cylindrical portion 3c.
５ｃには補助コイル６ａ、６ｂ、７ａ、７ｂがそれぞれ
巻装されている。補助コイル５ ａ ＋ ６ ｂ 、７
ａ ｒ７ｂは直列または並列に接続されて、垂直偏向
コイルｌａ、ｌｂに対し直列に接続されている。Auxiliary coils 6a, 6b, 7a, and 7b are wound around 5c, respectively. Auxiliary coil 5a + 6b, 7
a r7b are connected in series or in parallel, and are connected in series to the vertical deflection coils la, lb.
前述の実施例では、補助コイルを２対の分岐部に巻装し
たが、第２図に示すように主面部４ａ。In the embodiment described above, the auxiliary coil was wound around two pairs of branch parts, but as shown in FIG.
５ａに補助コイル６．７を巻装し、この補助コイル６．
７を垂直偏向コイルに対し直列に接続してもよい。An auxiliary coil 6.7 is wound around the auxiliary coil 6.5a.
7 may be connected in series to the vertical deflection coil.
発明の効果
本発明は前述のように構成されるので、第１および第２
の磁性体片だけでは満足に生ぜしめ得なかった補正用ピ
ンクッション状補助磁界を、垂直偏向コイル自体の巻き
線分布を調整することなく生成でき、コマ歪みの補正お
よびコンバーゼンス補正を両立させることができるので
あって、とくに広角偏向の大型カラー受像管、とりわけ
ＨＤＴＶ用カラー受像管に装着される偏向ヨークに適用
４
して優れた効果を発揮する。Effects of the Invention Since the present invention is configured as described above, the first and second
The pincushion-shaped auxiliary magnetic field for correction, which could not be produced satisfactorily with just a piece of magnetic material, can be generated without adjusting the winding distribution of the vertical deflection coil itself, making it possible to achieve both coma distortion correction and convergence correction. It is particularly effective when applied to a deflection yoke attached to a large color picture tube with wide-angle deflection, especially a color picture tube for HDTV.
第１図は本発明を実施した偏向ヨークの斜視図、第２図
は本発明の他の実施例の要部の斜視図、第３図は画面の
上下でコンバーゼンスコマ歪みが生じているときのパタ
ーンを示す図、第４図はスポットコマ歪みの説明図であ
る。
１ ａ ＊ １ ｂ・・・・・・垂直偏向コイル、３・
・・・・・絶縁枠体、４・・・・・・第１の磁性体片、
５・・・・・・第２の磁性体片、４ ａ 、 ５ ａ−
・＝−主面部、４ ｂ 、４ ｃ ｒ ５ ｂ ＋ ５
ｃ・・・・・・分岐部、６，６ａ、６ｂ、７．７ａ、
７ｂ・・・・・・補助コイル。Fig. 1 is a perspective view of a deflection yoke embodying the present invention, Fig. 2 is a perspective view of main parts of another embodiment of the invention, and Fig. 3 is a perspective view of a deflection yoke in which convergence coma distortion occurs at the top and bottom of the screen. FIG. 4, a diagram showing the pattern, is an explanatory diagram of spot coma distortion. 1 a * 1 b... Vertical deflection coil, 3.
...Insulating frame, 4...First magnetic piece,
5...Second magnetic piece, 4a, 5a-
・=-Main surface part, 4 b, 4 cr 5 b + 5
c... Branch, 6, 6a, 6b, 7.7a,
7b...Auxiliary coil.
Claims (1)
偏向コイルと、バレル状に歪んだ垂直偏向磁界を発生す
る垂直偏向コイルと、両偏向コイルを支持しかつ電子銃
側に円筒状部を有する絶縁枠体と、前記垂直偏向磁界の
電子銃側部分に磁気的に結合してピンクッション状に歪
んだ補助的垂直偏向磁界を電子銃側端部において発生さ
せる第１および第２の磁性体片と、補助コイルとを備え
てなり、前記第１および第２の磁性体片はそれぞれ垂直
軸を介して相対向する主面部と、この主面部の上端縁お
よび下端縁から水平に延び出て前記円筒状部の外面に沿
い電子銃側へ突出した２つの分岐部とを有し、前記補助
コイルは前記主面部および前記分岐部の少なくとも一方
に巻装されて、前記垂直偏向コイルに接続されてなるこ
とを特徴とする偏向ヨーク。A horizontal deflection coil that generates a pincushion-shaped distorted horizontal deflection magnetic field, a vertical deflection coil that generates a barrel-shaped distorted vertical deflection magnetic field, and an insulator that supports both deflection coils and has a cylindrical part on the electron gun side. a frame, and first and second magnetic pieces that are magnetically coupled to the electron gun side portion of the vertical deflection magnetic field to generate a pincushion-shaped auxiliary vertical deflection magnetic field at the electron gun side end. , and an auxiliary coil, wherein the first and second magnetic pieces each have a main surface facing each other via a vertical axis, and extend horizontally from the upper and lower edges of the main surface to connect to the cylinder. and two branch parts protruding toward the electron gun side along the outer surface of the shaped part, and the auxiliary coil is wound around at least one of the main surface part and the branch part, and is connected to the vertical deflection coil. A deflection yoke characterized by:
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19900789A JPH0364835A (en) | 1989-07-31 | 1989-07-31 | Deflecting yoke |
| CN 90106630 CN1020990C (en) | 1989-07-31 | 1990-07-31 | Deflection yoke for colour cathode ray tube |
| GB9016729A GB2235575B (en) | 1989-07-31 | 1990-07-31 | A deflection yoke for a cathode ray tube |
| US07/835,044 US5179319A (en) | 1989-07-31 | 1992-02-11 | Deflection yoke for a color CRT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19900789A JPH0364835A (en) | 1989-07-31 | 1989-07-31 | Deflecting yoke |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0364835A true JPH0364835A (en) | 1991-03-20 |
Family
ID=16400557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19900789A Pending JPH0364835A (en) | 1989-07-31 | 1989-07-31 | Deflecting yoke |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH0364835A (en) |
| CN (1) | CN1020990C (en) |
| GB (1) | GB2235575B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0350746U (en) * | 1989-09-22 | 1991-05-17 | ||
| KR19990048536A (en) * | 1997-12-10 | 1999-07-05 | 이형도 | Deflection yoke |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2268814B (en) * | 1992-07-17 | 1995-10-11 | Bicc Plc | Composite electric and optical cable |
| JP2000100347A (en) * | 1998-09-24 | 2000-04-07 | Nec Kansai Ltd | Color cathode-ray tube device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1467475A (en) * | 1973-07-13 | 1977-03-16 | Videon Sa | Device for the deflection and convergence correction of electron beams |
| NL7414845A (en) * | 1974-11-14 | 1976-05-18 | Philips Nv | DEVICE FOR DISPLAYING COLOR TV IMAGES. |
| JPS5227216A (en) * | 1975-08-25 | 1977-03-01 | Sony Corp | Convergence corrector of color cathode ray tube |
| US4429293A (en) * | 1983-05-13 | 1984-01-31 | Rca Corporation | Pincushion raster corrector distortion with improved performance |
| EP0218961B1 (en) * | 1985-09-27 | 1989-08-16 | Hitachi, Ltd. | Convergence correcting device capable of coma correction for use in a cathode ray tube having in-line electron guns |
| KR900008203B1 (en) * | 1986-03-18 | 1990-11-05 | 마쯔시다덴시고오교오 가부시기가이샤 | Deflection yoke |
-
1989
- 1989-07-31 JP JP19900789A patent/JPH0364835A/en active Pending
-
1990
- 1990-07-31 GB GB9016729A patent/GB2235575B/en not_active Expired - Fee Related
- 1990-07-31 CN CN 90106630 patent/CN1020990C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0350746U (en) * | 1989-09-22 | 1991-05-17 | ||
| KR19990048536A (en) * | 1997-12-10 | 1999-07-05 | 이형도 | Deflection yoke |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2235575B (en) | 1994-05-11 |
| CN1049246A (en) | 1991-02-13 |
| CN1020990C (en) | 1993-05-26 |
| GB2235575A (en) | 1991-03-06 |
| GB9016729D0 (en) | 1990-09-12 |
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