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1. WO1998024112 - DEFLECTING YOKE AND DISPLAY DEVICE

Publication Number WO/1998/024112
Publication Date 04.06.1998
International Application No. PCT/JP1997/004313
International Filing Date 26.11.1997
Chapter 2 Demand Filed 21.01.1998
IPC
H01J 29/76 2006.1
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
29Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/113
46Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
70Arrangements for deflecting ray or beam
72along one straight line or along two perpendicular straight lines
76Deflecting by magnetic fields only
CPC
H01J 2229/7033
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
2229Details of cathode ray tubes or electron beam tubes
70Electron beam control outside the vessel
703by magnetic fields
7032Conductor design and distribution
7033Winding
H01J 29/762
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
29Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
46Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
70Arrangements for deflecting ray or beam
72along one straight line or along two perpendicular straight lines
76Deflecting by magnetic fields only
762using saddle coils or printed windings
Applicants
  • HITACHI, LTD. [JP]/[JP] (AllExceptUS)
  • HITACHI MEDIA ELECTRONICS CO., LTD. [JP]/[JP] (AllExceptUS)
  • OKUYAMA, Nobutaka [JP]/[JP] (UsOnly)
  • FUKUMA, Kouji [JP]/[JP] (UsOnly)
  • SAKURAI, Souichi [JP]/[JP] (UsOnly)
  • SATO, Yoshio [JP]/[JP] (UsOnly)
  • OBARA, Masao [JP]/[JP] (UsOnly)
Inventors
  • OKUYAMA, Nobutaka
  • FUKUMA, Kouji
  • SAKURAI, Souichi
  • SATO, Yoshio
  • OBARA, Masao
Agents
  • OGAWA, Katsuo
Priority Data
8/31584127.11.1996JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) DEFLECTING YOKE AND DISPLAY DEVICE
(FR) BLOC DE DEVIATION ET DISPOSITIF D'AFFICHAGE
Abstract
(EN) 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 $g(u) 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).
(FR) L'invention concerne un bloc de déviation amélioré qui permet de réduire la distorsion de la luminosité en cas d'angle de vue élevé ainsi qu'un dispositif d'affichage permettant de créer un écran de haute qualité et utilisant ce bloc de déviation. S'agissant du bloc de déviation, la bobine de déviation horizontale (2) possède une paire de bobines en forme de selle obtenue par enroulement des conducteurs. Dans une partie du conducteur, on crée des bobines constituant la partie de transition du côté de la face fluorescente, et pourvues de parties en forme de collier (2a) saillant vers l'extérieur et des coudes (2b) et partant à l'oblique du côté d'un canon électronique (9) à partir des parties en forme de collier (2a). Ces bobines sont créés dans les parties en diagonale formant des angles $g(u), compris entre 48° et 58°, par rapport à l'axe horizontal (24) passant par un plan sensiblement perpendiculaire à l'axe d'un tube cathodique. L'invention permet de corriger la distorsion de la luminosité sans détériorer la sensibilité de la déviation horizontale, et ce, grâce au champ magnétique généré par la partie en forme de collier (2a) et par le coude (2b).
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