JPH0353734B2 - - Google Patents
Info
- Publication number
- JPH0353734B2 JPH0353734B2 JP56144613A JP14461381A JPH0353734B2 JP H0353734 B2 JPH0353734 B2 JP H0353734B2 JP 56144613 A JP56144613 A JP 56144613A JP 14461381 A JP14461381 A JP 14461381A JP H0353734 B2 JPH0353734 B2 JP H0353734B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic field
- field control
- deflection magnetic
- deflection
- control element
- 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
- 238000010894 electron beam technology Methods 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims 1
- 230000004075 alteration Effects 0.000 description 19
- 206010010071 Coma Diseases 0.000 description 13
- 230000035945 sensitivity Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 241000226585 Antennaria plantaginifolia Species 0.000 description 2
- 206010073261 Ovarian theca cell tumour Diseases 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 208000001644 thecoma Diseases 0.000 description 2
- 230000006866 deterioration Effects 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
- H01J29/56—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses
- H01J29/566—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses for correcting aberration
-
- 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
- H01J29/707—Arrangements intimately associated with parts of the gun and co-operating with external magnetic excitation devices
Description
【発明の詳細な説明】
本発明はカラーテレビジヨン受像機において、
コンバーゼンス補正回路を省略することができ、
且つピン歪補正量を軽減する事のできるインライ
ン配列の電子銃を有するカラー受像管の構造に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a color television receiver comprising:
The convergence correction circuit can be omitted,
The present invention also relates to a color picture tube structure having an in-line electron gun that can reduce the amount of pin distortion correction.
インラインの電子銃を有するカラー受像管にお
いては第１図に示すように水平偏向磁界１をピン
磁界に、垂直偏向磁界２をバレル磁界にすること
により、両サイドビーム間の色ずれを減少させて
おり、コンバーゼンス補正回路が単純化される長
所がある。 In a color picture tube with an in-line electron gun, as shown in Figure 1, the horizontal deflection magnetic field 1 is made into a pin field and the vertical deflection magnetic field 2 is made into a barrel field to reduce the color shift between the two side beams. This has the advantage of simplifying the convergence correction circuit.
しかし上述のように非斉一磁界を使用している
為に中央ビーム４に対する偏向感度が、サイドビ
ーム３および５に対する偏向感度より悪くなると
いう欠点があり、画面上には第２図に示すような
パターンが得られる。第２図においてｂはサイド
ビーム３および５による長方形パターンであり、
７は中央ビーム４による長方形パターンである。
このような現象を「コマ収差がある」と呼んでい
る。これを補正するために従来は第３図に示すよ
うな磁界制御素子８，９，１０および１１をイン
ライン配列の電子銃の電子ビーム放出孔１２，１
３および１４の直後に設けている。 However, as mentioned above, since a nonuniform magnetic field is used, there is a drawback that the deflection sensitivity for the center beam 4 is worse than the deflection sensitivity for the side beams 3 and 5. A pattern is obtained. In FIG. 2, b is a rectangular pattern formed by side beams 3 and 5;
7 is a rectangular pattern formed by the central beam 4.
This phenomenon is called "coma aberration". In order to correct this, conventionally magnetic field control elements 8, 9, 10 and 11 as shown in FIG.
It is provided immediately after 3 and 14.
第３図において磁界制御素子８および９はサイ
ドビーム放出孔１２および１４付近の水平および
垂直偏向磁界を弱め中央ビーム放出孔１３付近の
垂直偏向磁界を強めるように働く。 In FIG. 3, magnetic field control elements 8 and 9 work to weaken the horizontal and vertical deflection magnetic fields near the side beam emission holes 12 and 14 and strengthen the vertical deflection magnetic field near the central beam emission hole 13.
また磁界制御素子１０および１１は中央ビーム
放出孔１３付近の水平偏向磁界を強めるように働
く。 Further, the magnetic field control elements 10 and 11 act to strengthen the horizontal deflection magnetic field near the central beam emission hole 13.
この結果、サイドビーム３，５に対する偏向感
度が中央ビーム４に対する偏向感度より悪くな
り、偏向磁界を非斉一磁界にした事による中央ビ
ーム４の偏向感度の劣化を補正し画面上にはコム
収差のないパターンが得られる。 As a result, the deflection sensitivity for the side beams 3 and 5 is worse than the deflection sensitivity for the center beam 4, and the deterioration in the deflection sensitivity of the center beam 4 due to the non-uniform deflection magnetic field is corrected, and the comb aberration is reflected on the screen. You will get a pattern that does not exist.
また、コンバーゼンス補正回路を省略しようと
したり、糸巻歪補正量を軽減しようとして偏向ヨ
ークの種類や磁界分布を様々に変化させると、上
気目標を達成することのできる偏向ヨークとイン
ライン配列電子銃を有するカラー受像管の組合せ
に対してコマ収差のパターンが必ずしも第２図に
示されるようなパターンでなく、第４数ａあるい
はｂのようなパターとなる場合がある。 Also, if you try to omit the convergence correction circuit or try to reduce the amount of pincushion distortion correction by varying the type of deflection yoke and the magnetic field distribution, it is possible to create a deflection yoke and an inline array electron gun that can achieve the upper air target. For a combination of color picture tubes, the comatic aberration pattern is not necessarily a pattern as shown in FIG. 2, but may be a pattern as shown in the fourth number a or b.
第４図に於て６ａ，６ｂは両サイドビーム３，
５による長方形パターンであり、７ａ，７ｂは中
央ビーム４による長方形パターンである。 In Fig. 4, 6a and 6b are both side beams 3,
5 is a rectangular pattern, and 7a and 7b are rectangular patterns by the central beam 4.
第４図ａのようなコマ収差を補正する場合に
は、第５図に示されるような磁界制御素子１５〜
２２を電子銃の電子ビーム放出孔１２，１３およ
び１４の直後に設ければよい。同図において、磁
界制御素子１５および１６の部分１９，２０，２
１および２２は両サイドビーム放出孔１２および
１４付近の垂直偏向磁界を弱め中央ビーム放出孔
１３付近の垂直偏向磁界を強めるように働く。 When correcting comatic aberration as shown in FIG. 4a, magnetic field control elements 15 to 15 as shown in FIG.
22 may be provided immediately after the electron beam emitting holes 12, 13 and 14 of the electron gun. In the figure, portions 19, 20, 2 of magnetic field control elements 15 and 16
1 and 22 act to weaken the vertical deflection magnetic field near the side beam emission holes 12 and 14 and strengthen the vertical deflection magnetic field near the central beam emission hole 13.
また磁界制御素子１７および１８の部分は両サ
イドビーム放出孔１２および１４付近の水平偏向
磁界を強め、中央ビーム放出孔１３付近の水平偏
向磁界を弱めるように働く。 Further, the magnetic field control elements 17 and 18 act to strengthen the horizontal deflection magnetic field near both side beam emission holes 12 and 14 and weaken the horizontal deflection magnetic field near the central beam emission hole 13.
この結果、中央ビーム４に対する垂直偏向感度
が、両サイドビーム３，５に対する垂直偏向感度
より高くなり、また中央ビーム４に対する水平偏
向感度が両サイドビーム３，５に対する水平偏向
感度より低くなり、第４図ａに示されるようなコ
マ収差を補正し、画面上にはコマ収差のないパタ
ーンが得られる。 As a result, the vertical deflection sensitivity for the center beam 4 becomes higher than the vertical deflection sensitivity for both side beams 3 and 5, and the horizontal deflection sensitivity for the center beam 4 becomes lower than the horizontal deflection sensitivity for both side beams 3 and 5. By correcting coma aberration as shown in FIG. 4a, a pattern free of coma aberration can be obtained on the screen.
しかし第４図ｂのように左右コマ収差の修正量
が著しく大きい場合には、第５図に示されるよう
な磁界制御素子では左右のコマ収差を完全には補
正できない。その理由は磁界制御素子１５および
１６の部分、１７，１８のセンタービーム４に対
する水平偏向磁界のシールド効果が限界であるこ
と。また磁界制御素子の部分１９，２０，２１お
よび２２のサイドビーム３，５に対する水平偏向
磁界の磁束の集束効果が悪いことにある。したが
つて第４図ｂのようなパターンのコマ収差を補正
するには別の磁界制御素子が必要である。 However, when the amount of correction of the left and right coma aberrations is extremely large as shown in FIG. 4b, the left and right coma aberrations cannot be completely corrected by the magnetic field control element shown in FIG. The reason for this is that the shielding effect of the horizontal deflection magnetic field on the center beam 4 of the magnetic field control elements 15 and 16 and 17 and 18 is at its limit. Another problem is that the focusing effect of the magnetic flux of the horizontal deflection magnetic field on the side beams 3, 5 of the portions 19, 20, 21 and 22 of the magnetic field control element is poor. Therefore, another magnetic field control element is required to correct the coma aberration of the pattern shown in FIG. 4b.
本発明の目的は前記した従来技術の欠点をなく
し、両サイドビームに対する偏向感度と中央ビー
ムに対する偏向感度が異なるカラー受像管と偏向
ヨークの組合せに対して、両サイドビームと中央
ビームに対する偏向感度の差を解消する偏向磁界
制御素子付カラー受像管を提供することにある。 An object of the present invention is to eliminate the drawbacks of the prior art described above, and to provide a combination of a color picture tube and a deflection yoke that have different deflection sensitivities for both side beams and a center beam. An object of the present invention is to provide a color picture tube with a deflection magnetic field control element that eliminates the difference.
本発明はインライン電子銃を有するカラー受像
管において電子銃の電子ビーム放出孔付近に水平
偏向磁界方向にのびた部分と垂直偏向磁界方向に
のびた部分とからなる磁界制御素子を設け且つ垂
直偏向磁界方向にのびた部分には、サイドビーム
放出孔を挟んで互いに突起部を設け水平偏向磁界
をその突起部に集束させるようにしたものであ
る。 The present invention provides a color picture tube having an in-line electron gun, in which a magnetic field control element consisting of a part extending in the direction of the horizontal deflection magnetic field and a part extending in the direction of the vertical deflection magnetic field is provided near the electron beam emission hole of the electron gun, and the element is arranged in the direction of the vertical deflection magnetic field. The extended portions are provided with protrusions from each other with the side beam emission hole in between, so that the horizontal deflection magnetic field is focused on the protrusions.
第６図は本発明による偏向磁界制御素子付カラ
ー受像管の一実施例を示す正面図である。 FIG. 6 is a front view showing an embodiment of a color picture tube with a deflection magnetic field control element according to the present invention.
第６図において１２および１４は電子銃の両サ
イドビーム放出孔を示し１３は中央ビーム放出孔
を示す。また２３および２４は本発明に適用され
る偏向磁界制御素子であり２５〜３４は磁界制御
素子の部分を示す。このような構成配置にする
と、磁界制御素子の部分２７，２８，２９および
３０に吸収された水平偏向磁界の磁束は磁界制御
素子の部分３１，３２，３３および３４近傍に収
束され、サイドビーム放出孔１２および１４付近
の水平偏向磁界強度は第５図に示される従来技術
の偏向磁界制御素子１５および１６のサイドビー
ムの水平偏向磁界強度にくらべかなり強くなる。
したがつて第６図に示される本発明による磁界制
御素子２３および２４は、第５図に示される従来
技術の磁界制御素子１５および１６に対して両サ
イドビーム３および５の水平偏向感度をより高め
る働きをし第４図ｂのようなコマ収差を補正する
ことができる。この場合の偏向磁界制御素子と水
平偏向磁界強度BHの関係の一例を第７図に示す。
第７図において横軸の３５，３６および３７は各
ビーム放出孔１２，１３および１４の中心位置を
示し、３８は第５図に示す従来技術の偏向磁界制
御素子によるビーム放出孔付近の水平偏向磁界強
度を示し、３９は本発明に適用される偏向磁界制
御素子によるそれを示している。 In FIG. 6, reference numerals 12 and 14 indicate both side beam emission holes of the electron gun, and 13 indicates a central beam emission hole. Further, 23 and 24 are deflection magnetic field control elements applied to the present invention, and 25 to 34 indicate parts of the magnetic field control elements. With this configuration, the magnetic flux of the horizontal deflection magnetic field absorbed by the sections 27, 28, 29, and 30 of the magnetic field control element is focused near the sections 31, 32, 33, and 34 of the magnetic field control element, and the side beam is emitted. The horizontal deflection magnetic field strength near the holes 12 and 14 is considerably stronger than the horizontal deflection magnetic field strength of the side beams of the prior art deflection field control elements 15 and 16 shown in FIG.
The magnetic field control elements 23 and 24 according to the invention shown in FIG. 6 therefore improve the horizontal deflection sensitivity of both side beams 3 and 5 relative to the prior art magnetic field control elements 15 and 16 shown in FIG. This can correct comatic aberration as shown in FIG. 4b. An example of the relationship between the deflection magnetic field control element and the horizontal deflection magnetic field strength BH in this case is shown in FIG.
In FIG. 7, 35, 36, and 37 on the horizontal axis indicate the center position of each beam emission hole 12, 13, and 14, and 38 indicates the horizontal deflection near the beam emission hole by the conventional deflection magnetic field control element shown in FIG. The magnetic field strength is shown, and numeral 39 shows the strength due to the deflection magnetic field control element applied to the present invention.
第５図に示す従来のコマ収差補正用磁界制御素
子は、第４図ａのようなパターンのコマ収差しか
補正できなかつたが、本発明によれば第４図ｂの
ように左右コマ収差が著しく大きいパターンでも
修正することができ、これによりコンバーゼンス
補正回路を省略し糸巻歪補正量を軽減することが
出来る。したがつて、カラーテレビジヨン受像機
の原価低減や信頼性の向上などに大きな効果があ
る。 The conventional magnetic field control element for correcting coma aberration shown in FIG. 5 could only correct the coma aberration in the pattern shown in FIG. Even extremely large patterns can be corrected, thereby making it possible to omit the convergence correction circuit and reduce the amount of pincushion distortion correction. Therefore, it has a great effect on reducing the cost and improving the reliability of color television receivers.
第１図はインライン配列の電子銃を有するカラ
ー受像管の偏向磁界を示す図、第２図はコマ収差
補正用偏向磁界制御素子を用いない場合の従来の
コマ収差のパターンを示す図、第３図は従来のコ
マ収差パターンを補正する場合のコマ収差補正偏
向磁界制御素子を示す図、第４図ａおよびｂは、
コマ収差補正用偏向磁界制御素子を用いていない
場合にあらわれやすいコマ収差のパターンを示す
図、第５図は従来のコマ収差補正用偏向磁界制御
素子を示す図、第６図は本発明に適用される偏向
磁界制御素子の一実施例を示す図、第７図は、第
５図、第６図における水平偏向磁界強度を示す特
性図である。
３，５……サイドビーム、４……中央ビーム、
１２，１４……サイドビーム放出孔、１３……中
央ビーム放出孔、８〜１１，１５〜３４……偏向
磁界制御素子。
Fig. 1 is a diagram showing the deflection magnetic field of a color picture tube having an in-line array of electron guns, Fig. 2 is a diagram showing a conventional coma aberration pattern when no deflection magnetic field control element for coma aberration correction is used, and Fig. 3 The figure shows a coma aberration correction deflection magnetic field control element for correcting a conventional coma aberration pattern.
A diagram showing a pattern of coma aberration that tends to appear when a deflection magnetic field control element for coma aberration correction is not used, FIG. 5 is a diagram showing a conventional deflection magnetic field control element for coma aberration correction, and FIG. 6 is a diagram applied to the present invention. FIG. 7 is a characteristic diagram showing the horizontal deflection magnetic field strength in FIGS. 5 and 6, showing an example of the deflection magnetic field control element. 3, 5...Side beam, 4...Central beam,
12, 14... Side beam emission hole, 13... Central beam emission hole, 8-11, 15-34... Deflection magnetic field control element.
Claims (1)
近に２個の磁性体からなる偏向磁界制御素子を設
けた電子銃を有するカラー受像管において、前記
偏向磁界制御素子の水平偏向磁界と平行な辺が前
記電子銃の中央ビーム放出孔の左端および右端付
近にあり且つ前記偏向磁界制御素子の垂直偏向磁
界と平行な辺が前記電子銃の両サイドビーム放出
孔の上端および下端に各々配置され且つこの垂直
偏向磁界と平行な辺の両サイドビーム放出孔を挟
んで対向する部分に突起部を設けたことを特徴と
するカラー受像管。1. In a color picture tube having an electron gun in which a deflection magnetic field control element made of two magnetic materials is provided near the electron beam emission hole of an in-line array electron gun, the side parallel to the horizontal deflection magnetic field of the deflection magnetic field control element is Sides located near the left and right ends of the central beam emission hole of the electron gun and parallel to the vertical deflection magnetic field of the deflection magnetic field control element are arranged at the upper and lower ends of both side beam emission holes of the electron gun, respectively, and the vertical deflection A color picture tube characterized in that protrusions are provided on opposing sides across both side beam emission holes on sides parallel to the magnetic field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14461381A JPS5846557A (en) | 1981-09-16 | 1981-09-16 | Color picture tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14461381A JPS5846557A (en) | 1981-09-16 | 1981-09-16 | Color picture tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5846557A JPS5846557A (en) | 1983-03-18 |
| JPH0353734B2 true JPH0353734B2 (en) | 1991-08-16 |
Family
ID=15366095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14461381A Granted JPS5846557A (en) | 1981-09-16 | 1981-09-16 | Color picture tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5846557A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8402303A (en) * | 1984-07-20 | 1986-02-17 | Philips Nv | COLOR IMAGE TUBE. |
| FR2585878B1 (en) * | 1985-07-30 | 1988-12-09 | Videocolor | FIELD CONFORMER FOR COLOR TELEVISION TUBE WITH THREE BEAMS IN LINE |
| JPS6369998A (en) * | 1986-09-10 | 1988-03-30 | Showa Alum Corp | Method for electrolytically coloring aluminum material |
| JPS63231848A (en) * | 1987-03-20 | 1988-09-27 | Hitachi Ltd | Color picture tube |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5342672A (en) * | 1976-09-30 | 1978-04-18 | Mitsubishi Electric Corp | Color picture receiving tube device |
-
1981
- 1981-09-16 JP JP14461381A patent/JPS5846557A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5342672A (en) * | 1976-09-30 | 1978-04-18 | Mitsubishi Electric Corp | Color picture receiving tube device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5846557A (en) | 1983-03-18 |
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