(19)
(11) EP 0 348 912 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.07.1991 Bulletin 1991/28

(43) Date of publication A2:
03.01.1990 Bulletin 1990/01

(21) Application number: 89111701.2

(22) Date of filing: 27.06.1989
(51) International Patent Classification (IPC)5: H01J 29/56, H01J 29/76
(84) Designated Contracting States:
DE FR GB

(30) Priority: 27.06.1988 JP 156974/88

(71) Applicant: KABUSHIKI KAISHA TOSHIBA
Kawasaki-shi, Kanagawa-ken 210 (JP)

(72) Inventors:
  • Fujiwara, Takeshi Intellectual Property Division
    Tokyo 105 (JP)
  • Tokita, Kiyoshi Intellectual Property Division
    Tokyo 105 (JP)
  • Inoue, Masatsugu Intellectual Property Division
    Tokyo 105 (JP)

(74) Representative: Henkel, Feiler, Hänzel & Partner 
Möhlstrasse 37
81675 München
81675 München (DE)


(56) References cited: : 
   
       


    (54) Color cathode ray tube apparatus


    (57) Magnets (56a, 56b, 110a, 110b, 112a, 112b) for applying a pincushion type magnetic field to three electron beams emitted from an electron gun assembly (42) is arranged between the deflection device and the lens unit of the electron gun assembly. The pincushion type stationary magnetic field produced by the magnets correct deflection aberrations of the electron beams due to the magnetic field of the deflection device and improves the focusing characteristic on the periphery of a screen (46).







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