(19)
(11) EP 0 283 190 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.07.1989 Bulletin 1989/28

(43) Date of publication A2:
21.09.1988 Bulletin 1988/38

(21) Application number: 88301995.2

(22) Date of filing: 08.03.1988
(51) International Patent Classification (IPC)4: H01J 29/50, H01J 29/62
(84) Designated Contracting States:
DE FR GB

(30) Priority: 20.03.1987 JP 63788/87

(71) Applicant: HITACHI, LTD.
Chiyoda-ku, Tokyo 100 (JP)

(72) Inventor:
  • Komoro, Hidemasa
    Chousei-gun Chiba-ken (JP)

(74) Representative: Williams, Trevor John (GB) et al
J.A. Kemp & Co. 14 South Square, Gray's Inn
GB-London WC1R 5EU
GB-London WC1R 5EU (GB)


(56) References cited: : 
   
       


    (54) Electron gun for color picture tube


    (57) In order that an electron gun for a color picture tube furnished with grid electrodes each having a cylinder portion including an inclined end face may be installed in a color picture tube of different size without altering the inclination of the end face of the cylinder, an electrode for correcting an electric field is provided in at least one of the grid electrodes each of which has the cylinder portion including the inclined end face.







    Search report