WO1998024112A1 - Deflecting yoke and display device - Google Patents

Deflecting yoke and display device Download PDF

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Publication number
WO1998024112A1
WO1998024112A1 PCT/JP1997/004313 JP9704313W WO9824112A1 WO 1998024112 A1 WO1998024112 A1 WO 1998024112A1 JP 9704313 W JP9704313 W JP 9704313W WO 9824112 A1 WO9824112 A1 WO 9824112A1
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WO
WIPO (PCT)
Prior art keywords
cathode ray
ray tube
horizontal
coil
deflection
Prior art date
Application number
PCT/JP1997/004313
Other languages
French (fr)
Japanese (ja)
Inventor
Nobutaka Okuyama
Kouji Fukuma
Souichi Sakurai
Yoshio Sato
Masao Obara
Original Assignee
Hitachi, Ltd.
Hitachi Media Electronics Co., Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi, Ltd., Hitachi Media Electronics Co., Ltd. filed Critical Hitachi, Ltd.
Publication of WO1998024112A1 publication Critical patent/WO1998024112A1/en

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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
    • H01J29/762—Deflecting by magnetic fields only using saddle coils or printed windings
    • 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
    • H01J2229/7033—Winding

Definitions

  • the present invention relates to a deflection yoke for deflecting an electron beam of a cathode ray tube, and more particularly to a deflection yoke capable of reducing raster distortion in a wide-angle deflection yoke and a display device using the same.
  • a desired image screen is obtained by deflecting an electron beam generated by an electron gun electromagnetically by a deflection yoke and projecting the electron beam on a phosphor screen in front of the cathode ray tube.
  • the deflection yoke of such a cathode ray tube generally uses a wobble deflection coil.
  • the present invention has been made in view of the related art as described above, and an object of the present invention is to provide an improved deflection yoke capable of reducing raster distortion without lowering horizontal deflection sensitivity, and By using such a deflection yoke, there is provided a display device capable of displaying a high quality screen with reduced raster distortion despite the enlargement of the display screen.
  • a deflection yoke according to the present invention for achieving the above object is mounted on a portion of a cathode ray tube close to an electron gun, and deflects an electron beam generated from the electron gun toward a phosphor screen.
  • a deflection yoke having at least a horizontal deflection coil and a vertical deflection coil, wherein the horizontal deflection coil is constituted by a pair of serpentine coils formed by winding conductors;
  • An angle of 48 ° to 58 ° with respect to a horizontal central axis on a plane substantially perpendicular to the tube axis of the cathode ray tube is formed on a part of the coil conductor forming the transition portion on the fluorescent screen side of the cathode ray tube.
  • a flange portion protruding outward and a curved portion inclined from the flange portion toward the electron gun side are formed. is there.
  • the display device further includes a cathode ray tube having an electron gun for generating an electron beam, a horizontal deflection coil for deflecting the electron beam from the electron gun toward a fluorescent display surface of the cathode ray tube, and A deflection yoke having a vertical deflection coil; a video circuit for supplying a video signal to the electron gun of the cathode ray tube; and a horizontal deflection coil and a vertical deflection coil of the deflection yoke.
  • a horizontal deflection circuit for supplying a high-level horizontal deflection voltage and a high-level deflection voltage, respectively, and a vertical deflection circuit, wherein the horizontal deflection coil of the deflection yoke is formed by a pair of claws formed by winding a conductor.
  • a flange portion protruding outward at a diagonal portion in an angle of 48 ° to 58 ° with respect to the axis, and further extending from the flange portion inclining toward the electron gun. And forming a curved portion to correct raster distortion on the fluorescent display surface of the cathode ray tube.
  • FIG. 1 is a front view showing a configuration of a horizontal deflection coil of a deflection yoke, which is a feature of a color cathode ray tube according to an embodiment of the present invention, and a partial sectional view of each part.
  • FIG. 2 is a side view including a partially broken surface of the entire configuration of a color cathode ray tube incorporating a deflection yoke having a horizontal deflection coil according to an embodiment of the present invention
  • FIG. 3 is a block diagram of a display device including a deflection yoke having a horizontal deflection coil.
  • FIG. 4 is an operation explanatory diagram showing a change in the horizontal deflection magnetic field by the horizontal deflection coil of the deflection yoke according to the embodiment of the present invention shown in FIG. 1
  • FIG. 5 is a diagram shown in FIG.
  • FIG. 6 is a schematic diagram illustrating a correction operation of raster distortion by a horizontal deflection coil of the deflection yoke according to the embodiment of the present invention.
  • FIG. 6 shows a deflection yoke used in another embodiment of the present invention. It is the front and top view which show the structure of the used horizontal deflection coil.
  • FIG. 2 is a side view showing a partially cutaway part of a color cathode ray tube device provided with a deflection yoke according to the present invention.
  • reference numeral 1 denotes a deflection yoke. ing.
  • the deflection yoke 1 includes a horizontal deflection coil 2, a main vertical deflection coil 3, a main core 4, a separator 5, a sub core 6, an auxiliary vertical deflection coil 7, and a terminal cover 8.
  • reference numeral 9 denotes an electron gun
  • reference numeral 10 denotes a static compatibility magnet
  • reference numeral 11 denotes a color cathode ray tube (cathode ray tube)
  • reference numeral 12 denotes a phosphor screen of a color cathode ray tube.
  • the deflection yoke 1 has a phosphor screen 12 on the front surface, and is provided with an electron gun 9 for generating an inline array of multiple electron beams at the rear end of the rear neck portion. It is attached to the neck of the cathode ray tube 11.
  • the main core 4 that constitutes the deflection unit 1 is made of a magnetic material, and the main core 4 made of this magnetic material is made up of the horizontal deflection coil 2 of the deflection yoke 1 and the main vertical deflection. It is arranged on the outer periphery of the coil 3. Further, an auxiliary vertical deflection coil 7 is wound around a sub-core 6 which is a U-shaped magnetic material which is vertically disposed opposite to each other, and is provided on the side of the deflection yoke 1 where the electron gun 9 is arranged. .
  • reference numeral 2a denotes a crossover portion of the coil conductor on the phosphor screen side
  • reference numeral 2e denotes a void portion
  • reference numeral 23 denotes a hollow cathode ray tube 11 as will be described in detail later. The tube axis direction is shown.
  • FIG. 3 is a block diagram showing a color cathode ray tube device provided with a deflection yoke according to the present invention and its peripheral circuits. That is, this display device is provided with a video circuit 30, a horizontal deflection circuit 31, a vertical deflection circuit 32, a high voltage circuit 33, and the like. Also, the video signal input terminal 2 7, the horizontal synchronizing signal input terminal 28 and the vertical synchronizing signal input terminal 29 receive the corresponding signals, so that the video circuit 30, the horizontal deflection circuit 31 and the vertical deflection circuit 32 and The high-voltage circuit 33 performs a predetermined operation.
  • the horizontal deflection circuit 31 supplies the horizontal deflection current Ih to the horizontal deflection coil 2 to generate a horizontal deflection magnetic field
  • the vertical deflection circuit 32 applies the vertical deflection voltage to the main vertical deflection coil 3 and the auxiliary vertical deflection coil 7.
  • the current IV is supplied to generate a vertical deflection magnetic field
  • the horizontal and vertical deflection magnetic fields are controlled by the video circuit 30 to deflect the electron beam generated from the electron gun 9 into the color cathode ray tube 11. .
  • FIG. 1 shows a more detailed structure of the horizontal deflection coil 2 used in the deflection yoke according to the present invention.
  • FIG. 1 (A) is a front view of the horizontal deflection coil 2
  • FIG. 1 (B) is a side view of the front surface 1 taken along a line BB of the front surface 1.
  • FIG. 1 (C) is a cross-sectional view taken along the line CC of the front view.
  • the end of the horizontal deflection coil 2 composed of a pair of serpentine coils wound around a winding form on the fluorescent screen side has left and right coil conductors 2. It has a fluorescent screen side connecting portion connecting c and 2c.
  • one of the crossing portions on the fluorescent screen side of the horizontal deflection coil 2 wound in a coil shape by using a winding form is substantially perpendicular to the tube axis of the color cathode ray tube 11.
  • a flange-like portion 2a protruding outward in the direction is formed, and each coil conductor is inclined and curved toward the electron gun 9 side from the flange-like portion 2a on the other fluorescent screen side transition portion 2b.
  • An extended curved portion 2b is formed.
  • the angle 0 formed between the horizontal central axis 24 extending in the horizontal direction on the plane perpendicular to the tube axis direction 23 of the empty cathode ray tube 1 1 (FIG. 2) is from 48 ° to 58.
  • a gap 2e surrounded by a conductor of the flange 2a is formed at a diagonal of the flange 2a forming an angle.
  • the curved portion 2b of the fluorescent screen side connecting portion which connects the left and right coil conductors 2c, 2c of the horizontal deflection coil 2, applies the pin 14a to the winding before starting to wind the horizontal deflection coil 2. It can be formed by protruding.
  • the gap 2e can be formed by protruding the pin 14b from the former during the winding of the horizontal deflection coil. Note that the opening shape of the cross section on the fluorescent screen side of the horizontal deflection coil 2 is circular as shown by a broken line 13 in the figure.
  • FIG. 4 is an operation explanatory diagram showing a change in the horizontal deflection magnetic field generated by the horizontal deflection coil 2 according to the present invention when horizontally deflected to the right of the phosphor screen.
  • a current loop 15c is added equivalently.
  • a magnetic field B (broken line 16c) in the tube axis direction of the power cathode ray tube 11 is generated via the above-described diagonal gap 2e. Since the magnetic field B is strongly generated at a position corresponding to the diagonal portion of the fluorescent screen 12 of the color cathode ray tube 11, the vertical direction of the electron beam deflected to the diagonal portion is vertically extended.
  • the component deflection force F acts.
  • the horizontal raster line 20a drooping sharply at the corner, which is the diagonal part of the color cathode ray tube 11, moves upward or downward as indicated by the arrow 21a. It is corrected to rise.
  • a horizontal raster 20b having pincushion distortion as shown by a broken line in the figure can be obtained.
  • the horizontal line raster 20b having the pincushion distortion with the curvature corrected at the corner portion in this manner is further adjusted by the operation of the curved portion 2b described in detail below to obtain a linear raster ( A dashed line 20 c) can be obtained. That is, the curvature (solid line 20a) at the corner of the horizontal line raster is corrected to form a linear raster (dash-dot line 20c). Can be.
  • a curved portion 2b is formed at a part of the cross section on the phosphor screen side of the horizontal deflection coil 2, a current loop 15b is added equivalently, and a reverse magnetic field 16b is generated. Due to the generated reverse magnetic field 16 b, the horizontal deflection magnetic field generated by the horizontal deflection coil 2 changes from a solid arrow 16 a to a broken arrow 16 b in the figure, that is, a strong pinkish shape. I do. As a result, as shown in FIG.
  • the horizontal line raster 20b (broken line) having the pincushion distortion is corrected in the direction shown by the arrow 21b, and thus, the raster distortion as shown in the figure is reduced. No horizontal line raster (dash-dot line 20c) can be obtained.
  • FIG. 6 is a front view (FIG. 6 (A)) and a plan view (FIG. 6 (B)) showing the form of the horizontal deflection coil 2 used in another embodiment of the present invention.
  • the thickness of the flange 2a is made thinner than the other part at the diagonal part 2 ° so that the outermost dimension L of the flange part 2a is the largest at the diagonal part 2f.
  • the location where the outermost dimension L of the diagonal part 2 mm is the largest is the same as that in the above embodiment with respect to the tube axis direction 23 (Fig. 6 ( ⁇ )) of the empty cathode ray tube.
  • each coil conductor is closer to the electron gun 9 than the diagonal portion 2 f.
  • a curved portion 2b is formed which is inclined and curved and extends.
  • a diagonal portion 2f of the flange portion 2a is formed substantially at right angles to a tube axis of the cathode ray tube, and has a thickness in the tube axis direction of the cathode ray tube at the diagonal portion. It is formed thinner than other parts.
  • the horizontal deflection sensitivity due to the formation of the flange portion 2a is hardly changed by the formation of the curved portion 2b, but can be improved, as in the above-described embodiment.
  • the raster distortion is reduced by changing the magnetic field generated from the vicinity of the transition portion on the phosphor screen side of the horizontal deflection coil at the diagonal portion.
  • the inductance of the horizontal deflection coil can be reduced to improve the horizontal deflection sensitivity, and by using such a deflection yoke, the raster distortion can be reduced despite the wide-angle deflection angle.
  • the deflection yoke according to the present invention can be used to deflect an electron beam for displaying an image while reducing raster distortion in a cathode ray tube used for a television receiver or a display device for monitoring a personal computer.
  • a cathode ray tube used for a television receiver or a display device for monitoring a personal computer.
  • it is suitable for obtaining a high image quality even if the electron beam is deflected at a wide deflection angle.

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

An improved deflecting yoke where the luster distortion in the case of high angle of view can be reduced and a display device which provides a high-quality screen, using this. For the deflecting yoke, the horizontal deflecting coil (2) has a pair of saddle-type coils made by winding conductors around, and at a part of the coil conductor which forms the transition part on the side of its fluorescent face, collar-shaped parts (2a) projecting outward and bents (2b) extending aslant to the side of an electron gun (9) from these collar-shaped parts (2a) are formed at the diagonal parts forming angles υ ranging from 48° to 58° with respect to the horizontal axis (24) on the plane constituting roughly right angles to the axis of a cathode ray tube. It becomes possible to correct luster distortion practically without deteriorating horizontal deflecton sensitiveness by the magnetic field generated by this collar-shaped part (2a) and the bent (2b).

Description

明 細 書  Specification
偏向ヨーク及びディスプレイ装置 技術分野 Deflection yoke and display device
本発明は、 陰極線管の電子ビームを偏向する偏向ヨークに関し、 特に、 広角偏向の偏向ヨークにおけるラスタ歪を低減することのできる偏向ョ ーク及びそれを用いたディスプレイ装置に関する。 背景技術  The present invention relates to a deflection yoke for deflecting an electron beam of a cathode ray tube, and more particularly to a deflection yoke capable of reducing raster distortion in a wide-angle deflection yoke and a display device using the same. Background art
カラー陰極線管等を含む陰極線管では、 電子銃により発生した電子ビ —ムを偏向ヨークによって電磁的に偏向し、 これを陰極線管前面の蛍光 面に投射することにより所望の映像画面を得ている。 かかる陰極線管の 偏向ヨークには、 一般的に、 く ら形偏向コイルが使用されている。  In a cathode ray tube including a color cathode ray tube and the like, a desired image screen is obtained by deflecting an electron beam generated by an electron gun electromagnetically by a deflection yoke and projecting the electron beam on a phosphor screen in front of the cathode ray tube. . The deflection yoke of such a cathode ray tube generally uses a wobble deflection coil.
ところで、 かかるく ら形偏向コイルを有する偏向ヨークにおいては、 従来、 そのラスタ歪を低減するため、 例えば日本特開昭 6 2 - 1 8 0 9 3 6号公報などにも記載されているように、 水平偏向コイルの蛍光面側 の開口の形状を略多角形に形成し、 これにより、 ラスタ歪の低減を行う ものが既に知られている。  By the way, in a deflection yoke having such a deflection coil, conventionally, in order to reduce the raster distortion, for example, as described in Japanese Patent Application Laid-Open No. Sho 62-180936, for example, It is already known that the shape of the opening on the fluorescent screen side of the horizontal deflection coil is formed in a substantially polygonal shape, thereby reducing raster distortion.
しかしながら、 前記した従来技術では、 その水平偏向コイルの蛍光面 側の渡り部が陰極線管よりも離れる構造のため、 水平偏向に無効な磁界 が増大してインダクタンスが増大してしまい、 そのため、 水平偏向感度 が低下するものであつた。  However, in the above-described prior art, since the transition portion on the fluorescent screen side of the horizontal deflection coil is separated from the cathode ray tube, a magnetic field that is ineffective for horizontal deflection increases and inductance increases. The sensitivity was reduced.
また、 特に、 近年においては、 表示画面の大型化、 高画角化に伴い、 偏向ヨークの、 特に、 その水平偏向コイルによる偏向角の増大が要求さ れている。 しかしながら、 かかる偏向角の増大に伴い、 画面の対角部に おけるラスタ歪が増大し、 その歪形状も糸巻歪とは異なる湾曲した形状 の歪となる傾向にある。 かかるラスタ歪に対する改善要求は、 特に、 コ ンピュータ装置の表示装置であるディスプレイ装置において著しい。 本発明は、 上述のような従来技術に鑑みてなされたものであって、 そ の目的は、 水平偏向感度を低下させることなく、 ラスタ歪を低減するこ とのできる改良された偏向ヨーク、 及びかかる偏向ヨークを使用するこ とにより、 表示画面の大型化にもかかわらずラスタ歪の低減された高品 質の画面を表示することの可能なディスプレイ装置を提供することにあ る o 発明の開示 In recent years, in particular, with the increase in the size of the display screen and the increase in the angle of view, it has been required to increase the deflection angle of the deflection yoke, especially by its horizontal deflection coil. However, as the deflection angle increases, Raster distortion increases, and the distortion shape tends to be a curved shape different from pincushion distortion. Such a demand for improvement in raster distortion is particularly remarkable in a display device which is a display device of a computer device. The present invention has been made in view of the related art as described above, and an object of the present invention is to provide an improved deflection yoke capable of reducing raster distortion without lowering horizontal deflection sensitivity, and By using such a deflection yoke, there is provided a display device capable of displaying a high quality screen with reduced raster distortion despite the enlargement of the display screen.
上記の目的を達成するための本発明に係る偏向ヨークは、 陰極線管の 電子銃に近接した部位に取り付けられ、 前記電子銃から発生される電子 ビームを蛍光面に向けて偏向するためのための、 少なくとも水平偏向コ ィルと垂直偏向コイルを有する偏向ヨークにおいて、 前記水平偏向コィ ルは、 導体を巻き回して形成された 1対のく ら形コイルにより構成され、 かつ、 前記く ら形コイルの蛍光面側の渡り部を形成するコイル導体の一 部に、 該陰極線管の管軸に対して略直角を成す平面上の水平中心軸に対 して 4 8 ° から 5 8 ° の角度を成す範囲の対角部において、 外側に向か つて突出する鍔状部と、 さらに、 該鍔状部から前記電子銃側に傾斜して 延びた湾曲部とを形成したことを特徴とするものである。  A deflection yoke according to the present invention for achieving the above object is mounted on a portion of a cathode ray tube close to an electron gun, and deflects an electron beam generated from the electron gun toward a phosphor screen. A deflection yoke having at least a horizontal deflection coil and a vertical deflection coil, wherein the horizontal deflection coil is constituted by a pair of serpentine coils formed by winding conductors; An angle of 48 ° to 58 ° with respect to a horizontal central axis on a plane substantially perpendicular to the tube axis of the cathode ray tube is formed on a part of the coil conductor forming the transition portion on the fluorescent screen side of the cathode ray tube. In a diagonal portion of the range formed, a flange portion protruding outward and a curved portion inclined from the flange portion toward the electron gun side are formed. is there.
また、 本発明に係るディスプレイ装置は、 電子ビームを発生する電子 銃を備えた陰極線管と、 前記電子銃からの電子ビームを前記陰極線管の 蛍光表示面に向けて偏向するための水平偏向コイル及び垂直偏向コィル を備えた偏向ヨークと、 前記陰極線管の電子銃へビデオ信号を供給する ビデオ回路と、 前記偏向ヨークの水平偏向コイルと垂直偏向コイルにそ れぞれ高圧の水平偏向電圧と垂直偏向電圧を供給する水平偏向回路と垂 直偏向回路とを備え、 前記偏向ヨークの前記水平偏向コイルは、 導体を 巻き回して形成された 1対のく ら形コイルにより構成され、 かつ、 前記 く ら形コイルの蛍光面側の渡り部を形成するコイル導体の一部に、 該陰 極線管の管軸に対して略直角を成す平面上の水平中心軸に対して 4 8 ° から 5 8 ° の角度を成す範囲の対角部において、 外側に向かって突出す る鍔状部と、 さらに、 該鍔状部から前記電子銃側に傾斜して延びた湾曲 部とを形成し、 もって、 前記陰極線管の蛍光表示面上のラスタ歪を補正 することを特徴とするものである。 図面簡単な説明 The display device according to the present invention further includes a cathode ray tube having an electron gun for generating an electron beam, a horizontal deflection coil for deflecting the electron beam from the electron gun toward a fluorescent display surface of the cathode ray tube, and A deflection yoke having a vertical deflection coil; a video circuit for supplying a video signal to the electron gun of the cathode ray tube; and a horizontal deflection coil and a vertical deflection coil of the deflection yoke. A horizontal deflection circuit for supplying a high-level horizontal deflection voltage and a high-level deflection voltage, respectively, and a vertical deflection circuit, wherein the horizontal deflection coil of the deflection yoke is formed by a pair of claws formed by winding a conductor. A horizontal center on a plane substantially perpendicular to the tube axis of the cathode ray tube; A flange portion protruding outward at a diagonal portion in an angle of 48 ° to 58 ° with respect to the axis, and further extending from the flange portion inclining toward the electron gun. And forming a curved portion to correct raster distortion on the fluorescent display surface of the cathode ray tube. BRIEF DESCRIPTION OF THE DRAWINGS
第 1図は、 本発明の実施の形態であるカラ一陰極線管の特徴をなす偏 向ヨークの水平偏向コイルの構成を示す正面及び各部の一部断面図であ 、  FIG. 1 is a front view showing a configuration of a horizontal deflection coil of a deflection yoke, which is a feature of a color cathode ray tube according to an embodiment of the present invention, and a partial sectional view of each part.
第 2図は、 本発明の実施の形態に係る水平偏向コイルを備えた偏向ョ ークが組み込まれたカラ一陰極線管の全体構成の一部破断面を含む側面 図であり、  FIG. 2 is a side view including a partially broken surface of the entire configuration of a color cathode ray tube incorporating a deflection yoke having a horizontal deflection coil according to an embodiment of the present invention,
第 3図は、 水平偏向コイルを備えた偏向ヨークを含むディスプレイ装 置のブロック図であり、  FIG. 3 is a block diagram of a display device including a deflection yoke having a horizontal deflection coil.
第 4図は、 第 1図に示した本発明の実施の形態に係る偏向ヨークの水 平偏向コイルによる水平偏向磁界の変化を示す動作説明図であり、 第 5図は、 第 1図に示した本発明の実施の形態に係る偏向ヨークの水 平偏向コイルによるラスタ歪の補正動作を説明する模式図であり、 第 6図は、 本発明の他の実施の形態で使用される偏向ヨークを使用し た水平偏向コイルの構成を示す正面及び平面図である。 発明を実施するための最良の形態 FIG. 4 is an operation explanatory diagram showing a change in the horizontal deflection magnetic field by the horizontal deflection coil of the deflection yoke according to the embodiment of the present invention shown in FIG. 1, and FIG. 5 is a diagram shown in FIG. FIG. 6 is a schematic diagram illustrating a correction operation of raster distortion by a horizontal deflection coil of the deflection yoke according to the embodiment of the present invention. FIG. 6 shows a deflection yoke used in another embodiment of the present invention. It is the front and top view which show the structure of the used horizontal deflection coil. BEST MODE FOR CARRYING OUT THE INVENTION
本発明をより詳細に説明するために、 添付の図面に従ってこれを説明 する。  In order to explain the present invention in more detail, this will be described with reference to the accompanying drawings.
第 2図は、 本発明になる偏向ヨークを備えたカラ一陰極線管装置を一 部破断してその一部断面を示した側面図であり、 この図中において、 符 号 1は偏向ヨークを示している。 この偏向ヨーク 1は、 水平偏向コイル 2、 主垂直偏向コイル 3、 主コア 4、 セパレ一夕 5、 副コア 6、 補助垂 直偏向コイル 7及び端子カバ一 8を備えている。 また、 図中の符号 9は 電子銃、 符号 1 0はスタティ ックコンパ一ゼンスマグネッ ト、 符号 1 1 はカラー陰極線管 （陰極線管） 、 そして、 符号 1 2はカラ一陰極線管の 蛍光面である。 このように、 前記偏向ヨーク 1は、 前面に蛍光面 1 2を 有し、 かつ、 後部のネック部の後端にイ ンライ ン配列の多電子ビームを 発生する電子銃 9が取り付けられたカラ一陰極線管 1 1の前記ネック部 に取り付けられる。  FIG. 2 is a side view showing a partially cutaway part of a color cathode ray tube device provided with a deflection yoke according to the present invention. In this figure, reference numeral 1 denotes a deflection yoke. ing. The deflection yoke 1 includes a horizontal deflection coil 2, a main vertical deflection coil 3, a main core 4, a separator 5, a sub core 6, an auxiliary vertical deflection coil 7, and a terminal cover 8. In the figure, reference numeral 9 denotes an electron gun, reference numeral 10 denotes a static compatibility magnet, reference numeral 11 denotes a color cathode ray tube (cathode ray tube), and reference numeral 12 denotes a phosphor screen of a color cathode ray tube. As described above, the deflection yoke 1 has a phosphor screen 12 on the front surface, and is provided with an electron gun 9 for generating an inline array of multiple electron beams at the rear end of the rear neck portion. It is attached to the neck of the cathode ray tube 11.
図にも示すように、 上記偏向ョ一ク 1を構成する主コア 4は、 磁性体 から成り、 この磁性体から成る主コア 4は、 偏向ヨーク 1の水平偏向コ ィル 2 と主垂直偏向コイル 3の外周に配置される。 また、 上下に対向配 置される U字形の磁性体である副コア 6には、 補助垂直偏向コイル 7が 巻回され、 前記偏向ヨーク 1の電子銃 9が配置された側に設けられてい る。 さらに、 ここでは、 符号 2 aは、 後にも詳述するが、 コイル導体の 蛍光面側渡り部を、 符号 2 eは空隙部を、 そして、 符号 2 3はカラ一陰 極線管 1 1の管軸方向を示している。  As shown in the figure, the main core 4 that constitutes the deflection unit 1 is made of a magnetic material, and the main core 4 made of this magnetic material is made up of the horizontal deflection coil 2 of the deflection yoke 1 and the main vertical deflection. It is arranged on the outer periphery of the coil 3. Further, an auxiliary vertical deflection coil 7 is wound around a sub-core 6 which is a U-shaped magnetic material which is vertically disposed opposite to each other, and is provided on the side of the deflection yoke 1 where the electron gun 9 is arranged. . Further, here, reference numeral 2a denotes a crossover portion of the coil conductor on the phosphor screen side, reference numeral 2e denotes a void portion, and reference numeral 23 denotes a hollow cathode ray tube 11 as will be described in detail later. The tube axis direction is shown.
第 3図は、 本発明になる偏向ヨークを備えたカラ一陰極線管装置とそ の周辺回路を示したブロック図である。 すなわち、 このディスプレイ装 置には、 ビデオ回路 3 0、 水平偏向回路 3 1、 垂直偏向回路 3 2、 及び、 高圧回路 3 3等が設けられている。 また、 図中のビデオ信号入力端子 2 7、 水平同期信号入力端子 2 8、 そして、 垂直同期信号入力端子 2 9に、 それぞれ相応する信号が入力されることにより、 上記ビデオ回路 3 0、 水平偏向回路 3 1、 垂直偏向回路 3 2及び、 高圧回路 3 3がそれぞれ所 定の動作を行う。 すなわち、 水平偏向回路 3 1により水平偏向コイル 2 に水平偏向電流 I hが供給されて水平偏向磁界を発生し、 垂直偏向回路 3 2により主垂直偏向コイル 3及び補助垂直偏向コイル 7に垂直偏向電 流 I Vが供給されて垂直偏向磁界を発生し、 これらの水平及び垂直偏向 磁界により、 ビデオ回路 3 0に制御されて電子銃 9からカラ一陰極線管 1 1内に発生される電子ビームを偏向する。 FIG. 3 is a block diagram showing a color cathode ray tube device provided with a deflection yoke according to the present invention and its peripheral circuits. That is, this display device is provided with a video circuit 30, a horizontal deflection circuit 31, a vertical deflection circuit 32, a high voltage circuit 33, and the like. Also, the video signal input terminal 2 7, the horizontal synchronizing signal input terminal 28 and the vertical synchronizing signal input terminal 29 receive the corresponding signals, so that the video circuit 30, the horizontal deflection circuit 31 and the vertical deflection circuit 32 and The high-voltage circuit 33 performs a predetermined operation. That is, the horizontal deflection circuit 31 supplies the horizontal deflection current Ih to the horizontal deflection coil 2 to generate a horizontal deflection magnetic field, and the vertical deflection circuit 32 applies the vertical deflection voltage to the main vertical deflection coil 3 and the auxiliary vertical deflection coil 7. The current IV is supplied to generate a vertical deflection magnetic field, and the horizontal and vertical deflection magnetic fields are controlled by the video circuit 30 to deflect the electron beam generated from the electron gun 9 into the color cathode ray tube 11. .
次に、 第 1図には、 本発明になる偏向ヨークに使用する水平偏向コィ ル 2のより詳細な構造が示されている。 なお、 この図において、 第 1図 ( A ) は、 水平偏向コイル 2の正面図であり、 第 1図 （B ) は、 上記正 面 1の B— B断面線で破断した側面図であり、 第 1図 （ C ) は、 上記正 面図の C— C断面線で破断した断面図である。  Next, FIG. 1 shows a more detailed structure of the horizontal deflection coil 2 used in the deflection yoke according to the present invention. In this figure, FIG. 1 (A) is a front view of the horizontal deflection coil 2, and FIG. 1 (B) is a side view of the front surface 1 taken along a line BB of the front surface 1. FIG. 1 (C) is a cross-sectional view taken along the line CC of the front view.
これらの図からも明らかなように、 巻型を甩いて巻回された 1対のく ら形コイルで構成した前記水平偏向コイル 2の蛍光面側の端部には、 左 右のコイル導体 2 c、 2 cをつなぐ蛍光面側渡り部を有している。 そし て、 本発明では、 卷型を用いてく ら形に巻回された上記水平偏向コイル 2の蛍光面側渡り部の一方に、 カラー陰極線管 1 1の管軸に対して略直 角を成す方向に外側に突出した鍔状部 2 aを形成し、 他方の蛍光面側渡 り部 2 bに、 該鍔状部 2 aより各々のコイル導体が電子銃 9側に傾斜及 び湾曲して延びた湾曲部 2 bを形成している。 かつ、 カラ一陰極線管 1 1の管軸方向 2 3 (第 2図） に対して垂直な平面上で水平方向に延びた 水平中心軸 2 4に対して成す角度 0が 4 8 ° から 5 8 ° をなす該鍔状部 2 aの対角部には、 該鍔状部 2 aの導体により囲まれた空隙部 2 eを形 成している。 一方、 上記水平偏向コイル 2の左右のコイル導体 2 c、 2 cをつなぐ 蛍光面側渡り部の湾曲部 2 bは、 水平偏向コイル 2の卷回しを始める前 にピン 1 4 aを巻型より突出させることにより、 形成することができる。 また、 上記空隙部 2 eは、 水平偏向コイルの巻回途中でピン 1 4 bを巻 型より突出させることにより、 形成することができる。 なお、 上記水平 偏向コイル 2の蛍光面側の渡り部の開口形状は、 図中に破線 1 3で示す ように円形である。 As is clear from these figures, the end of the horizontal deflection coil 2 composed of a pair of serpentine coils wound around a winding form on the fluorescent screen side has left and right coil conductors 2. It has a fluorescent screen side connecting portion connecting c and 2c. According to the present invention, one of the crossing portions on the fluorescent screen side of the horizontal deflection coil 2 wound in a coil shape by using a winding form is substantially perpendicular to the tube axis of the color cathode ray tube 11. A flange-like portion 2a protruding outward in the direction is formed, and each coil conductor is inclined and curved toward the electron gun 9 side from the flange-like portion 2a on the other fluorescent screen side transition portion 2b. An extended curved portion 2b is formed. In addition, the angle 0 formed between the horizontal central axis 24 extending in the horizontal direction on the plane perpendicular to the tube axis direction 23 of the empty cathode ray tube 1 1 (FIG. 2) is from 48 ° to 58. A gap 2e surrounded by a conductor of the flange 2a is formed at a diagonal of the flange 2a forming an angle. On the other hand, the curved portion 2b of the fluorescent screen side connecting portion, which connects the left and right coil conductors 2c, 2c of the horizontal deflection coil 2, applies the pin 14a to the winding before starting to wind the horizontal deflection coil 2. It can be formed by protruding. The gap 2e can be formed by protruding the pin 14b from the former during the winding of the horizontal deflection coil. Note that the opening shape of the cross section on the fluorescent screen side of the horizontal deflection coil 2 is circular as shown by a broken line 13 in the figure.
続いて、 上記にその詳細な構造を説明した本発明になる水平偏向コィ ル 2の動作について、 以下に説明する。  Subsequently, the operation of the horizontal deflection coil 2 according to the present invention whose detailed structure has been described above will be described below.
第 4図は、 蛍光面の右側に水平偏向する場合の本発明による水平偏向 コイル 2の作る水平偏向磁界の変化を示す動作説明図である。 蛍光面側 の渡り部の鍔状部 2 aに空隙部 2 eを形成することにより、 等価的に電 流ループ 1 5 cが加わる。 これにより、 力ラー陰極線管 1 1の管軸方向 の磁界 B (破線 1 6 c ) が上述した対角部の空隙部 2 eを介して生じる。 この磁界 Bは、 カラ一陰極線管 1 1の蛍光面 1 2の対角部に対応する位 置で強く発生するため、 この対角部に偏向される電子ビームに上下に広 がる向きの垂直成分の偏向力 Fが作用する。  FIG. 4 is an operation explanatory diagram showing a change in the horizontal deflection magnetic field generated by the horizontal deflection coil 2 according to the present invention when horizontally deflected to the right of the phosphor screen. By forming a gap 2e in the flange 2a at the bridging portion on the phosphor screen side, a current loop 15c is added equivalently. As a result, a magnetic field B (broken line 16c) in the tube axis direction of the power cathode ray tube 11 is generated via the above-described diagonal gap 2e. Since the magnetic field B is strongly generated at a position corresponding to the diagonal portion of the fluorescent screen 12 of the color cathode ray tube 11, the vertical direction of the electron beam deflected to the diagonal portion is vertically extended. The component deflection force F acts.
その結果、 第 5図に示すように、 カラ一陰極線管 1 1の対角部である コーナ部で急激に垂れ下がった横線ラスタ 2 0 aは、 矢印 2 1 aで示さ れるように上方あるいは下方に上昇するように補正される。 これにより、 図中に破線で示すような糸巻歪を有する横線ラスタ 2 0 bとすることが できる。 このようにしてコーナ部での湾曲が補正された糸巻歪を有する 横線ラスタ 2 0 bは、 さらに、 以下に詳細に説明する湾曲部 2 bの働き によって調整を行うことにより、 直線状のラスタ （一点鎖線 2 0 c ) を 得ることができる。 すなわち、 横線ラスタのコーナ部での湾曲 （実線 2 0 a ) が補正され、 直線状のラスタ （一点鎖線 2 0 c ) を形成すること ができる。 As a result, as shown in Fig. 5, the horizontal raster line 20a drooping sharply at the corner, which is the diagonal part of the color cathode ray tube 11, moves upward or downward as indicated by the arrow 21a. It is corrected to rise. As a result, a horizontal raster 20b having pincushion distortion as shown by a broken line in the figure can be obtained. The horizontal line raster 20b having the pincushion distortion with the curvature corrected at the corner portion in this manner is further adjusted by the operation of the curved portion 2b described in detail below to obtain a linear raster ( A dashed line 20 c) can be obtained. That is, the curvature (solid line 20a) at the corner of the horizontal line raster is corrected to form a linear raster (dash-dot line 20c). Can be.
次に、 湾曲部 2 bの作用について再び第 4図を用いて説明する。 水平 偏向コイル 2の蛍光面側の渡り部の一部に湾曲部 2 bを形成すると、 等 価的に電流ループ 1 5 bが加わり、 逆磁界 1 6 bが発生する。 この発生 した逆磁界 1 6 bにより、 水平偏向コイル 2により発生される水平偏向 磁界は、 図に実線の矢印 1 6 aから破線の矢印 1 6 bへと、 すなわち、 強いピンク ッショ ン形に変化する。 その結果、 第 5図に示すように、 上 記糸巻歪を有する横線ラスタ 2 0 b (破線） は、 矢印 2 1 bで示す方向 に補正され、 もって、図中に示すような、 ラスタ歪のない横線ラスタ （一 点鎖線 2 0 c ) を得ることができる。  Next, the operation of the curved portion 2b will be described again with reference to FIG. If a curved portion 2b is formed at a part of the cross section on the phosphor screen side of the horizontal deflection coil 2, a current loop 15b is added equivalently, and a reverse magnetic field 16b is generated. Due to the generated reverse magnetic field 16 b, the horizontal deflection magnetic field generated by the horizontal deflection coil 2 changes from a solid arrow 16 a to a broken arrow 16 b in the figure, that is, a strong pinkish shape. I do. As a result, as shown in FIG. 5, the horizontal line raster 20b (broken line) having the pincushion distortion is corrected in the direction shown by the arrow 21b, and thus, the raster distortion as shown in the figure is reduced. No horizontal line raster (dash-dot line 20c) can be obtained.
水平偏向コイル 2の蛍光面側の渡り部の一部に上記の空隙部 2 eを形 成すれば、 水平偏向感度が劣化するが、 湾曲部 2 bを形成することによ り、 水平偏向コイルのィンダクタンスを減少することができる。 そして、 水平偏向コイルのィンダクタンスが減少すれば、 水平偏向コイルの水平 偏向感度が向上し、 その結果、 それぞれの効果の総和により、 水平偏向 感度はほとんど変化せず、 あるいは更に改善することが可能になる。 第 6図は、 本発明の他の実施の形態に使用する水平偏向コイル 2の形 態を示す正面図 （第 6図 （A ) ) 及びその平面図 （第 6図 （B ) ) であ る o  If the above gap 2 e is formed in a part of the cross section on the fluorescent screen side of the horizontal deflection coil 2, the horizontal deflection sensitivity is deteriorated. However, the horizontal deflection coil is formed by forming the curved portion 2 b. Can be reduced. If the inductance of the horizontal deflection coil is reduced, the horizontal deflection sensitivity of the horizontal deflection coil is improved. As a result, the horizontal deflection sensitivity hardly changes or can be further improved depending on the sum of the respective effects. become. FIG. 6 is a front view (FIG. 6 (A)) and a plan view (FIG. 6 (B)) showing the form of the horizontal deflection coil 2 used in another embodiment of the present invention. o
この他の実施の形態では、 上述の構成とは異なり、 図にも示すように、 水平偏向コイル 2の蛍光面側渡り部の鍔状部 2 aの、 前記カラー陰極線 管の管軸 2 3方向の厚さを、 対角部 2 ίで他の部分より も薄くすること により、 該鍔状部 2 aの最外周の寸法 Lを対角部 2 f で最も大きくなる ように形成している。 なお、 この対角部 2 ίの最外周の寸法 Lが最も大 きい箇所は、 上記実施の形態と同様に、 カラ一陰極線管の管軸方向 2 3 (第 6図 （Β ) ) に対して垂直な平面上で水平方向に延びた水平中心軸 2 4 (第 6図 （A ) ) に対して成す角度 0が 4 8 ° から 5 8 ° の範囲に 位置になるように形成されている。 また、 この他の実施の形態でも、 上 記の実施の形態と同様、 上記水平偏向コイル 2の該鍔状部 2 a、 特に、 その対角部 2 f より各々のコイル導体が電子銃 9側に傾斜しかつ湾曲し て延びた湾曲部 2 bを形成している。 また、 この鍔状部 2 aの対角部 2 f は、 前記陰極線管の管軸に対して略直角に形成されると共に、 その対 角部での前記陰極線管の管軸方向の厚さを他の部分よりも薄く形成して いる。 In this other embodiment, unlike the above-described configuration, as shown in the figure, the flange portion 2 a of the horizontal deflection coil 2 at the fluorescent screen side transition portion, the tube axis 23 direction of the color cathode ray tube, The thickness of the flange 2a is made thinner than the other part at the diagonal part 2 ° so that the outermost dimension L of the flange part 2a is the largest at the diagonal part 2f. The location where the outermost dimension L of the diagonal part 2 mm is the largest is the same as that in the above embodiment with respect to the tube axis direction 23 (Fig. 6 (Β)) of the empty cathode ray tube. Horizontal center axis extending horizontally on a vertical plane It is formed so that the angle 0 formed with respect to 24 (FIG. 6 (A)) is in the range of 48 ° to 58 °. Also in this other embodiment, as in the above-described embodiment, the flange-shaped portion 2 a of the horizontal deflection coil 2, in particular, each coil conductor is closer to the electron gun 9 than the diagonal portion 2 f. A curved portion 2b is formed which is inclined and curved and extends. A diagonal portion 2f of the flange portion 2a is formed substantially at right angles to a tube axis of the cathode ray tube, and has a thickness in the tube axis direction of the cathode ray tube at the diagonal portion. It is formed thinner than other parts.
このため、 この他の実施の形態になる形態によれば、 水平偏向コイル 2の蛍光面側の渡り部の一部に形成された鍔状部 2 aに空隙部 2 eを形 成しないでも、 上記第 4図に示したとほぼ同様な電流ループ 1 5 c、 1 5 bが形成され、 かつ、 湾曲部 2 bにより電流ループ 1 5 bが加わる。 その結果、 上記第 1図に示した実施の形態における水平偏向コイル 2 と 同様に、 横線ラスタ 2 0 aの歪が補正され、 もって、 直線状の横線ラス 夕 2 0 cを得ることができる （第 5図を参照） 。  For this reason, according to the form of the other embodiment, even if the gap portion 2 e is not formed in the flange portion 2 a formed on a part of the transition portion on the fluorescent screen side of the horizontal deflection coil 2, The current loops 15c and 15b substantially similar to those shown in FIG. 4 are formed, and the current loop 15b is added by the curved portion 2b. As a result, similarly to the horizontal deflection coil 2 in the embodiment shown in FIG. 1, the distortion of the horizontal raster 20a is corrected, and thus a linear horizontal raster 20c can be obtained ( See Figure 5).
また、 上記鍔状部 2 aの形成による水平偏向感度に関しても、 やはり 上記実施の形態と同様に、 その湾曲部 2 bの形成により、 ほとんど変化 させず、 むしろ、 改善することが可能になる。  Also, the horizontal deflection sensitivity due to the formation of the flange portion 2a is hardly changed by the formation of the curved portion 2b, but can be improved, as in the above-described embodiment.
以上の詳細な説明からも明らかなように、 本発明の偏向ヨークによれ ば、 水平偏向コイルの蛍光面側の渡り部付近から発生する磁界を対角部 で変化させることによりラスタ歪を低減すると共に、 水平偏向コイルの ィンダクタンスを減少させて水平偏向感度を改善することができ、 さら に、 かかる偏向ヨークを採用することにより、 特に、 広角の偏向角にも かかわらず、 そのラスタ歪を低減し、 高品質の画面を表示することの可 能なディスプレイ装置を得ることが可能になるという、 技術的にも優れ た効果を発揮する。 産業上の利用可能性 As is clear from the above detailed description, according to the deflection yoke of the present invention, the raster distortion is reduced by changing the magnetic field generated from the vicinity of the transition portion on the phosphor screen side of the horizontal deflection coil at the diagonal portion. At the same time, the inductance of the horizontal deflection coil can be reduced to improve the horizontal deflection sensitivity, and by using such a deflection yoke, the raster distortion can be reduced despite the wide-angle deflection angle. In addition, it is possible to obtain a display device capable of displaying a high-quality screen. Industrial applicability
このように、 本発明に係る偏向ョークは、 テレビジョ ン受信機やパー ソナルコンピュータのモニタ用のディスプレイ装置に用いられる陰極線 管において、 ラスタ歪みを低減しつつ画像を表示するための電子ビーム の偏向に有用である。 特に、 広角の偏向角で電子ビームを偏向しても高 画質を得よう とする場合にする適している。  As described above, the deflection yoke according to the present invention can be used to deflect an electron beam for displaying an image while reducing raster distortion in a cathode ray tube used for a television receiver or a display device for monitoring a personal computer. Useful for In particular, it is suitable for obtaining a high image quality even if the electron beam is deflected at a wide deflection angle.

Claims

請 求 の 範 囲 The scope of the claims
1 . 陰極線管の電子銃に近接した部位に取り付けられ、 前記電子銃から 発生される電子ビームを蛍光面に向けて偏向するための水平偏向コイル 及び垂直偏向コイルを少なく とも備えた偏向ヨークにおいて、 前記水平 偏向コイルは、 前記陰極線管の管軸方向へ磁界を生じさせる手段と、 前 記陰極線管の管軸と直交する方向であって、 水平偏向磁界と逆方向の磁 界を発生する手段とを備えることを特徴とする偏向ヨーク。 1. A deflection yoke attached to a portion of a cathode ray tube close to an electron gun and provided with at least a horizontal deflection coil and a vertical deflection coil for deflecting an electron beam generated from the electron gun toward a phosphor screen, Means for generating a magnetic field in the direction of the tube axis of the cathode ray tube; means for generating a magnetic field in a direction orthogonal to the tube axis of the cathode ray tube and opposite to the horizontal deflection magnetic field; A deflection yoke, comprising:
2 . 陰極線管の電子銃に近接した部位に取り付けられ、 前記電子銃から 発生される電子ビームを蛍光面に向けて偏向するための水平偏向コイル 及び垂直偏向コイルを少なく とも備えた偏向ヨークにおいて、 前記水平 偏向コイルは、 導体を巻き回して形成された 1対のく ら形コイルを有し、 該く ら形コイルの蛍光面側の渡り部を形成するコイル導体の一部に、 前 記陰極線管の管軸に対して略直角を成す平面上の水平中心軸に対して 4 8 ° から 5 8 ° の角度を成す範囲の対角部において、 外側に向かって突 出する鍔状部と、 該鍔状部から前記電子銃側に傾斜して延びた湾曲部と を形成したことを特徴とする偏向ヨーク。  2. A deflection yoke attached to a portion of the cathode ray tube close to the electron gun and provided with at least a horizontal deflection coil and a vertical deflection coil for deflecting an electron beam generated from the electron gun toward a phosphor screen, The horizontal deflection coil has a pair of serpentine coils formed by winding a conductor, and a part of the coil conductor forming a transition portion on the fluorescent screen side of the serpentine coil is provided with the cathode wire. A flange protruding outward at a diagonal portion in a range of 48 ° to 58 ° with respect to a horizontal center axis on a plane substantially perpendicular to the pipe axis; And a curved portion inclined from the flange portion toward the electron gun.
3 . 前記鍔状部は、 導体を含み、 該導体により囲まれた空隙部が形成さ れることを特徴とする請求の範囲第 2項に記載の偏向ヨーク。  3. The deflection yoke according to claim 2, wherein the flange portion includes a conductor, and a gap surrounded by the conductor is formed.
4 . 前記鍔状部は、 前記水平中心軸に対して 4 8 ° から 5 8 ° の角度を 成す範囲の対角部において、 最外周間の寸法が最も大きくなるように形 成されることを特徴とする請求の範囲第 2項に記載の偏向ヨーク。  4. The flange-shaped portion is formed so that the dimension between the outermost circumferences is the largest at a diagonal portion in an angle range of 48 ° to 58 ° with respect to the horizontal center axis. 3. The deflection yoke according to claim 2, wherein:
5 . 前記鍔状部は、 前記陰極線管の管軸に対して略直角に形成されると ともに、 前記対角部における前記陰極線管の管軸方向の厚さを、 他の部 分よりも薄く形成したことを特徴とする請求の範囲第 2項に記載の偏向 ヨーク。 5. The flange portion is formed substantially at right angles to the tube axis of the cathode ray tube, and the thickness of the diagonal portion in the tube axis direction of the cathode ray tube is thinner than other portions. 3. The deflection yoke according to claim 2, wherein the deflection yoke is formed.
6 . 電子ビームを発生する電子銃を備えた陰極線管と、 前記電子銃から の電子ビームを前記陰極線管の蛍光表示面に向けて偏向するための水平 偏向コイルと垂直偏向コイルとを備えた偏向ヨークと、 前記陰極線管の 電子銃へビデオ信号を供給するビデオ回路と、 前記偏向ヨークの水平偏 向コィルと垂直偏向コィルにそれぞれ高圧の水平偏向電圧と垂直偏向電 圧を供給する水平偏向回路と垂直偏向回路とを備え、 前記偏向ヨークの 前記水平偏向コイルは、 導体を巻き回して形成された 1対のく ら形コィ ルを有し、 該く ら形コイルの蛍光面側の渡り部を形成するコイル導体の 一部に、 該陰極線管の管軸に対して略直角を成す平面上の水平中心軸に 対して 4 8 ° から 5 8 ° の角度を成す範囲の対角部において、 外側に向 かって突出する鍔状部と、 該鍔状部から前記電子銃側に傾斜して延びた 湾曲部とを形成し、 これにより前記陰極線管の蛍光表示面上のラスタ歪 を補正することを特徴とするディスプレイ装置。 6. A cathode ray tube provided with an electron gun for generating an electron beam, and a deflection unit provided with a horizontal deflection coil and a vertical deflection coil for deflecting the electron beam from the electron gun toward a fluorescent display surface of the cathode ray tube. A yoke, a video circuit for supplying a video signal to an electron gun of the cathode ray tube, a horizontal deflection circuit for supplying a high horizontal deflection voltage and a high vertical deflection voltage to a horizontal deflection coil and a vertical deflection coil of the deflection yoke, respectively. A vertical deflection circuit, wherein the horizontal deflection coil of the deflection yoke has a pair of serpentine coils formed by winding a conductor, and has a transition part on the fluorescent screen side of the serpentine coil. In a part of the coil conductor to be formed, at the diagonal portion in the range of 48 ° to 58 ° with respect to the horizontal central axis on a plane substantially perpendicular to the tube axis of the cathode ray tube, Tsuba protruding toward Parts and display device to form a curved portion that extends to be inclined to the electron gun side from the collar-like portion, thereby characterized in that for correcting the raster distortion on the phosphor display screen of the cathode ray tube.
7 . 前記鍔状部は、 導体を含み、 該導体により囲まれた空隙部を形成し たことを特徴とする請求の範囲第 6項に記載のディスプレイ装置。  7. The display device according to claim 6, wherein the flange-shaped portion includes a conductor, and forms a void surrounded by the conductor.
8 . 前記鍔状部は、 前記水平中心軸に対して 4 8 ° から 5 8 ° の角度を 成す範囲の対角部において、 最外周間の寸法が最も大きくなるように形 成されることを特徴とする請求の範囲第 6項に記載のディスプレイ装置 < 8. The flange-shaped portion is formed so that the dimension between the outermost circumferences is the largest at a diagonal portion within an angle of 48 ° to 58 ° with respect to the horizontal center axis. The display device according to claim 6 <
9 . 前記鍔状部は、 前記陰極線管の管軸に対して略直角に形成されると ともに、 前記対角部における前記陰極線管の管軸方向の厚さを、 他の部 分よりも薄く形成したことを特徴とする請求の範囲第 6項に記載のディ 9. The flange portion is formed substantially at right angles to the tube axis of the cathode ray tube, and the thickness of the diagonal portion in the tube axis direction of the cathode ray tube is smaller than other portions. The disk according to claim 6, characterized in that it is formed.
PCT/JP1997/004313 1996-11-27 1997-11-26 Deflecting yoke and display device WO1998024112A1 (en)

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JP8/315841 1996-11-27
JP31584196 1996-11-27

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62180936A (en) * 1978-01-18 1987-08-08 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Color television receiver display device
JPH02144832A (en) * 1988-10-06 1990-06-04 Philips Gloeilampenfab:Nv Color display tube
JPH02158038A (en) * 1988-10-27 1990-06-18 Philips Gloeilampenfab:Nv Saddle type deflection coil
JPH02216738A (en) * 1989-02-16 1990-08-29 Matsushita Electric Ind Co Ltd Deflection yoke

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62180936A (en) * 1978-01-18 1987-08-08 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Color television receiver display device
JPH02144832A (en) * 1988-10-06 1990-06-04 Philips Gloeilampenfab:Nv Color display tube
JPH02158038A (en) * 1988-10-27 1990-06-18 Philips Gloeilampenfab:Nv Saddle type deflection coil
JPH02216738A (en) * 1989-02-16 1990-08-29 Matsushita Electric Ind Co Ltd Deflection yoke

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